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2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 1
2015 IPC® Design, Installation and Inspection Principles
2015 IPC® Design, Installation and Inspection PrinciplesBased on the 2015 International Plumbing Code® (IPC®)
Description Description The 2015 International Plumbing Code® (IPC®)
continues to emphasize both prescriptive and performance-related provisions.
The 2015 IPC encompass the initial design of the plumbing system, the installation and construction of plumbing systems and the maintenance of operating systems.
All plumbing systems that are provided for utilization by and for the general safety and wellbeing of the occupants of a building are intended to be governed by the code.
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Goal Goal The goal of this seminar is to provide key
information on the design, installation and inspection principles based on the 2015 IPC.
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ObjectivesObjectives Upon completion, participants will be better able
to:
Identify code enforcement issues and key code sections
Describe the application of the code to inspection, plan review and code enforcement
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2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 2
Marginal Markings within the codebookMarginal Markings within the codebook Solid vertical lines indicate a technical change
from the requirements of the 2009 edition.
Arrows indicate where a section, paragraph, item in a list, exception or table has been deleted.
A single asterisk [*] indicates that text or a table has been relocated elsewhere in the code.
A double asterisk [**] indicates that the section or table immediately following has been relocated here from a different section.
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***
Table of ContentsTable of Contents Module I – Administration, Definitions and
General Regulations Module 2 – Fixtures, Module 3 – Water Systems, Sanitary Drainage
and Venting Module 4 – Storm Drainage, Special Piping and
Storage Systems and Gray Waste Recycling Systems.
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Administration, Definitions and General RegulationsAdministration, Definitions and General Regulations
Part 1
7
AdministrationAdministrationChapter One
8
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Chapter One — Administration Chapter One — Administration
Applies to the code official Establishes the rights and privileges of the
design professional, contractor and building owner
Establishes the responsibilities of various professionals
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Scope 101.2Scope 101.2Code applies to: Erection Installation Alterations Repairs Relocation Replacement Addition to Use or maintenance
Code doesn’t apply to: fuel gas systems Residential buildings
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Existing installations 102.2Existing installations 102.2 Existing
installations that were installed per the code in effect during its construction do not need to be changed, provided it is maintained in good operating condition.
Inspector’s Challenge: Installations that did
not meet code at the time of construction will need to be brought up to the current code.
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Maintenance 102.3Maintenance 102.3 The owner or
authorized agent shall maintain the system and all of its parts in a safe operating condition
Inspector’s challenge: The code official has
the right to re-inspect the plumbing systems and may be called on to force compliance with the code when the plumbing systems are unsafe.
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2015 IPC Design, Installation and Inspection Principles
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Additions, alterations or repairs 102.4Additions, alterations or repairs 102.4 The new work shall
comply with the current code, the existing parts may continue unchanged if they are safe
Inspector’s challenge:Determining what has been altered or repaired, may require a preliminary inspection before new work commences.
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Change of occupancy 102.5Change of occupancy 102.5 A change of
occupancy requires that all parts of the plumbing system meet the current code for that occupancy
Inspector’s challenge:Determining what plumbing elements, if any, can have their use continued is sometimes hampered by limited access to the systems involved. (buried in walls, underground)
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Duties and Powers of the Code Official Section 104Duties and Powers of the Code Official Section 104 The code official shall: Receive applications, review plans and issue permits Conduct inspections and record the results Have the right of entry to inspect (within the law) Carry identification Issue the appropriate notices to ensure compliance Keep and retain records of activities
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Administration – Chapter 1Administration – Chapter 1 Section 105 – Approval Section 108 – Violations Section 109 – Means of Appeal Section 110 – Temporary Equipment, Systems
and Uses
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Copyright 2015 International Code Council 5
Chapter One —Administration Chapter One —Administration
Discuss the following questions:
What are the Duties and Power of the Code Official?
What are your challenges as a code official?
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DefinitionsDefinitionsChapter Two
18
Branch intervals Branch intervals
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Depth of Trap Seal Depth of Trap Seal Change from depth of
water seal Allows other liquids to
maintain the seal, such as in a waterless urinal
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Grease Interceptor Grease Interceptor
Fats, oils and grease (FOG) disposal systems Gravity Hydromechanical
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Plumbing Appliance Plumbing Appliance There is difference between a
plumbing fixture and a plumbing appliance. A dishwasher is a plumbing
appliance. Because a jetted whirlpool tub
does not depend upon energized components to be a bathtub, it is a plumbing fixture.
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Plumbing Fixture Plumbing Fixture Plumbing fixture could have only a water supply
connected to it, only a waste line connected to it, or both.
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Toilet FacilityToilet Facility A room or space that
contains not less than one water closet and one lavatory.
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Gravity GREASE INTERCEPTOR Gravity GREASE INTERCEPTOR
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Alternative Onsite Nonpotable Water. A way to collect waste
water for partial treatment and reuse for flushing toilets and urinals.
Alternate Onsite NonpotableWaterAlternate Onsite NonpotableWater
Waste ReceptorWaste Receptor Waste Receptor. A
floor sink, standpipe, hub drain or a floor drain that receives the discharge of one or more indirect waste pipes.
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Parts of a plumbing systemParts of a plumbing system
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General Regulations General Regulations
Chapter 3
29
Section 301.3 – Connections to drainage systemSection 301.3 – Connections to drainage system An exception is
included to allow gray-water-producing fixtures to be connected to a gray water collection
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Section 303.1 – IdentificationSection 303.1 – Identification
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Section 303.4 – Third-party certificationSection 303.4 – Third-party certification
This requires all plumbing products and materials be listed by a third-party certification agency such are the ICC-ES PMG Listing Program.
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Section 304.4 –Openings for pipesSection 304.4 –Openings for pipes
All spaces between pipes and the sides of the openings through walls, floors or ceilings shall be caulked or closed with appropriate material.
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Section 305.3 – Pipes through foundation wallsSection 305.3 – Pipes through foundation walls
All pipes traveling through a foundation wall must be sleeved or have a relieving arch that supports the foundation.
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Section 305.4 – FreezingSection 305.4 – Freezing
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Section 305.6 – Protection against physical damageSection 305.6 – Protection against physical damage
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Copyright 2015 International Code Council 10
Section 305.7 – Protection of plumbing system components Section 305.7 – Protection of plumbing system components
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NOTE: OTHER METHODS OF PROTECTION OF PLUMBING COMPONENTS ARE POSSIBLE, SUBJECT TO APPROVAL BY THE CODE OFFICIAL.
WALL BEYOND
RECESSED IN BUILDING WALL
DRIVEWAY
PROTECTED BY A GUARD
DRIVEWAY
CONCRETE-FILLED STEEL POST
Section 306 — Trenching, excavation and backfillSection 306 — Trenching, excavation and backfill
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Section 307 — Structural safety Section 307 — Structural safety
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Section 307.2 – Cutting, notching or bored holesSection 307.2 – Cutting, notching or bored holes
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2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 11
Section 307.2 – Cutting, notching or bored holesSection 307.2 – Cutting, notching or bored holes
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Section 307.3 – Penetration of floor/ceiling assemblies and fire-resistance-rated assemblies
Section 307.3 – Penetration of floor/ceiling assemblies and fire-resistance-rated assemblies
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Section 307.3 – Penetration of floor/ceiling assemblies and fire-resistance-rated assemblies
Section 307.3 – Penetration of floor/ceiling assemblies and fire-resistance-rated assemblies
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Section 307.3 – Penetration of floor/ceiling assemblies and fire-resistance-rated assemblies
Section 307.3 – Penetration of floor/ceiling assemblies and fire-resistance-rated assemblies
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Section 307.5 Protection of footingsSection 307.5 Protection of footings Trenches installed
parallel to footings must remain outside the bearing plane of the bottom of the footing
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Piping support—Section 308Piping support—Section 308
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Location of hangersLocation of hangers
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For SI: I inch =25.4 mm
Table 308.5 –Hanger spacingTable 308.5 –Hanger spacing The spacing of
supports, listed in Table 308.5, is based on reducing the sag of the piping system
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Midway guidesMidway guides Midway guides shall be installed on
a number of products when the size is 2 inches or less. Midway between the required vertical supports (5’). These guides should not be tight, vertical movement should be unimpeded.
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2015 IPC Table 308.5Footnote b
midwayguides
Section 308.6 –Sway bracingSection 308.6 –Sway bracing
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Section 308.7 –Anchorage
Section 308.7 –Anchorage
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Section 308.7.1 –Location
Section 308.7.1 –Location
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Section 308.9 – Parallel water distribution systemsSection 308.9 – Parallel water distribution systems Where hot water piping is bundled with other hot
water piping or cold water piping, each individual hot water pipe must be insulated.
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Section 309.2 – Flood hazard Section 309.2 – Flood hazard The code refers to an elevation as required by
Section 1612 of the International Building Code as such required elevations may be above the actual design flood elevation.
309.3 restricts plumbing from penetrating or being mounted to walls that are designed to break away in flood conditions.
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Washroom and toilet room requirements—Section 310Washroom and toilet room requirements—Section 310
Toilet room requirements are regulated by building and mechanical code.
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Section 311 —Toilet facilities for workers
Section 311 —Toilet facilities for workers
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Section 312 – Tests and InspectionsSection 312 – Tests and Inspections Section 312.1 – Required tests Section 312.2 – Drainage and vent water test Section 312.3 – Drainage and vent air test Section 312.4 – Drainage and vent final test Section 312.5 – Water supply system test Section 312.6 – Gravity sewer test Section 312.7 – Forced sewer test Section 312.8 – Storm drainage system test Section 312.9 – Shower liner test Section 312.10 – Inspection and testing of backflow
prevention assemblies
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Section 312.9 —Shower liner testSection 312.9 —Shower liner test
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Section 312.9 — Shower liner testSection 312.9 — Shower liner test
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Section 314.2.2 – Drain pipe materials and sizesSection 314.2.2 – Drain pipe materials and sizes
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2015 IPC Table
314.2.2Page 22
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Section 315 – Penetrations Section 315 – Penetrations
Brings the plumbing code into alignment with the energy code, by sealing openings in wall plates.
Any penetration of fire-rated assemblies shall sealed per the building code.
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Section 315.1 — Sealing of annular spaces Section 315.1 — Sealing of annular spaces
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Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
1. After final approval of a plumbing system, the code does not provide for any reinspection of the system.
True
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False
According to Section 102.3, the code official shall have the authority to require any plumbing system to be
reinspected.
Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
2. Requirements needed for plumbing safety that are not in the code shall be determined by the __________________.
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Code Official
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Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
3. Define the following words:Conductor _______________________Gray water ________________________Plumbing fixture ___________________
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Conductor – A pipe inside the building that conveys storm water from the roof to a storm or combined building drain.Gray water – Water waste discharged from lavatories, bathtubs, showers, clothes washers and laundry traps.Plumbing fixtures – A receptacle or device that is connected to a water supply system or discharge to a drainage system or both.
Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
4. A pipe sleeve used for protection shall be two pipe sizes greater than the pipe passing through the wall.
False
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True
Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
5. Gravity sewer tests consist of filling the pipe with no less than a ________foot head of water.
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103048 mm
Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
6. An air test may be used to test plastic plumbing systems.
True
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False
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Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
7. A potable water system or a _____________ system may be used to flush water closets.
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gray water
Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
8. Penetrations of the building envelope that leave gaps between the sides of the opening and the pipe shall be _______________.
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sealed
Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
9. An alternative engineered design for a plumbing system may be used if it provides the _____________ level of quality, strength, effectiveness, fire resistance, durability and safety.
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equivalent
Module 1 — Administration, Definitions and General Regulations
Module 1 — Administration, Definitions and General Regulations
10. A shower liner test must be plugged below the flange clamping the liner and filled with water to the overflow point.
True
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False
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Fixtures, Water Heaters, Indirect/Special Wastes and Separators
Fixtures, Water Heaters, Indirect/Special Wastes and Separators
Module 2
73
Fixtures, Faucets and Fixture FittingsFixtures, Faucets and Fixture Fittings
Chapter 4
74
Table 403.1 — Minimum Number of Plumbing FixturesTable 403.1 — Minimum Number of Plumbing Fixtures The number of fixtures provided shall be
determined based on the actual use of the building Ex. A gymnasium with a stage for assemblies at a
school without permanent seating would be an A-3
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Table 403.1 — Minimum Number of Plumbing Fixtures (portion)
Table 403.1 — Minimum Number of Plumbing Fixtures (portion)
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2015 IPC Table 403.1
Pages 25-27
d. The occupant load for seasonal outdoor seating and entertainment areas shall be included when determining the minimum number of facilities required.
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Table 403.1 — Minimum Number of Plumbing Fixtures (portion)
Table 403.1 — Minimum Number of Plumbing Fixtures (portion)
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2015 IPC Table 403.1
Pages 25-27
e. For business and mercantile occupancies with an occupant load of 15 or fewer, service sinks shall not be required.
Table 403.1 — Minimum Number of Plumbing Fixtures
Table 403.1 — Minimum Number of Plumbing Fixtures
A mixed-use building with a Group E (education) occupant load of 538, Group A-3 (gymnasiums, halls, museums) occupant load of 115 and Group S-1 (storage) occupant load of 82.
What are the minimum numbers of fixtures required for each sex? See previous slides.
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Section 403.2 — Separate facilitiesSection 403.2 — Separate facilities
Item 3 changed to allow a mercantile occupant load of up to 100 persons before separate sex facilities are required.
This relaxes the burden on small retail spaces so that they do not require two accessible toilet rooms, which take up a disproportionate amount of space.
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Section 403.2.1 — Family or assisted-use toilet facilities serving as separate facilities.
Section 403.2.1 — Family or assisted-use toilet facilities serving as separate facilities.
Added to allow two “no sex designated” family or assisted-use toilet rooms to serve a space that requires only one water closet per sex.
Advantage is that because either toilet room can be used by either sex, there is more availability of facilities in smaller spaces without needing to offer multiple-user toilet facilities.
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Section 403.3 — Required public toilet facilitiesSection 403.3 — Required public toilet facilitiesExceptions: To clarify that parking lots and parking garage
buildings (without attendants) do not require public toilet facilities.
Structures and tenant spaces intended for quick transactions, including take out, pick up and drop off, having a public access area less than or equal to 300 sq. ft. do not need to provide public facilities (employee restrooms still apply)
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Section 403.3.2 — Toilet room locations new drawing show lavsSection 403.3.2 — Toilet room locations new drawing show lavs
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Section 403.3.6 — Door locking Section 403.3.6 — Door locking
Doors of multiple-occupant toilet rooms must not be capable of being locked from the inside.
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Section 403.5 —Drinking fountain locationSection 403.5 —Drinking fountain location The code requires drinking fountains to be
located within 500’ of the most remote tenant space.
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Within a travel distance of 500 feet of the most remote location in the tenant space.
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Section 405.3.1 — Fixture ClearancesSection 405.3.1 — Fixture Clearances
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Index
A. All fixtures shall not be closer than 15” from center to sidewall.
B. All fixtures shall not be closer than 30’’ center to center between adjacent fixtures.
C. All fixtures shall have at least 21“ of clearance in front.
D. Water closet compartments shall not be less than 30“ wide and 60’’ deep.
E. Urinal partitions shall extend at least 18“ from sidewall or 6’’ out from the lip.
Section 405.3.5 — Urinal PartitionsSection 405.3.5 — Urinal Partitions Each urinal
utilized by the public or employees shall occupy a separate area with walls or partitions to provide privacy.
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Section 405.3.5 — Urinal Partitions (cont.)Section 405.3.5 — Urinal Partitions (cont.)
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No more than 12” From floor
At least 60” from floor
At least 18” from wall
6”
Section 405.4 — Floor and wall drainage connectionsSection 405.4 — Floor and wall drainage connections
A new type of water closet drain connection is added to this section.
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Section 406.2 — Waste ConnectionsSection 406.2 — Waste Connections
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2-inch minimum 3-inch minimum
Note: Where a connection is made to a fixture branch, horizontal branch drain or drainage stack, the minimum required size is 3 inches
Section 407.2 — Bathtub waste outlets and overflows Section 407.2 — Bathtub waste outlets and overflows
Overflows for bathtubs are required as a safeguard against the overfilling of bathtubs.
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Dishwashing Machines—Section 409 Dishwashing Machines—Section 409
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Section 410.1 — Approved drinking fountainsSection 410.1 — Approved drinking fountains
Although the IPC indicates the minimum number of drinking fountains for an occupancy, the International Building Code required additional drinking fountains to comply with accessibility regulations.
The International Building Code requirement was brought into the IPC for clarity.
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Section 410.3 — Minimum number of drinking fountains Section 410.3 — Minimum number of drinking fountains
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Section 410.3 — Substitution for drinking fountains Section 410.3 — Substitution for drinking fountains
Restaurants where water is served with the meal may omit a drinking fountain.
Water dispensers can be substituted for half the required drinking fountains.
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Section 412.2 — Floor DrainsSection 412.2 — Floor Drains
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Section 412.3 — Size of Floor DrainsSection 412.3 — Size of Floor Drains
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Section 413.4 – Water supply requiredSection 413.4 – Water supply required
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Section 416.1 — Group Wash-up FixtureSection 416.1 — Group Wash-up Fixture
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Group wash up equipment shall conform to the requirements of Section 416.
20 inches of rim equals one lavatory
Section 416.5 — Tempered water for public handwashing facilities Section 416.5 — Tempered water for public handwashing facilities
This section was revised to clarify what is considered to be a public hand-washing facility.
Tempered water is required for lavatories and group wash up fixtures in public toilet facilities provided for customer, patrons and visitors.
Maximum temperature at the outlet: 110 degrees
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417.2 — Water supply riser 417.2 — Water supply riser Riser must be fastened using screws or a device
specifically designed for such purpose.
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Section 417.4 — Shower compartmentsSection 417.4 — Shower compartments
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Exception:Exception:
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417.4.1 Floor and wall area417.4.1 Floor and wall area Smooth, corrosion
resistant, and non-absorbent materials shall extend to at least 6 feet above floor level and not less that 70 inches above the drain of the tub or shower joints made water tight
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Section 417.4.2 — AccessSection 417.4.2 — Access The shower compartment
access and egress opening shall have a minimum clear and unobstructed finished width of 22 inches.
Shower compartments required to be designed in conformance to accessibility provisions shall comply with Section 404.1.
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Section 419.1 — ApprovalSection 419.1 — Approval Urinals shall conform to
ANSI Z124.9, ASME A112.19.2M, CSA B45.1 or CSA B45.5. Urinals shall conform to the water consumption requirements of Section 604.4.
Water-supplied urinals shall conform to the hydraulic performance requirements of ASME A112.19.6, CSA B45.1 or CSA B45.5.
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Section 420.1 – Approval Section 420.1 – Approval Electro-hydraulic water
closets (a water closet of the siphonic or washdowntype that utilizes motors, pumps, and controllers to assist the flushing action)
And dual flush water closets (two flushing actions, one using less water than 1.6 gal/flush) are addressed and the relevant standards are cited.
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Dual flush water closets
Section 421.5 — Access to PumpSection 421.5 — Access to Pump
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Section 421.5 —Access to Pump (cont.)Section 421.5 —Access to Pump (cont.)
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Section 424.3 – Individual shower valvesSection 424.3 – Individual shower valves
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Section 424.4 – Multiple (gang) showersSection 424.4 – Multiple (gang) showers
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Maximum Temperatures Allowed At Use LocationsMaximum Temperatures Allowed At Use Locations
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Plumbing FixtureMaximum Discharge
TemperatureReference Standard IPC Section
1. Bidet ≤ 110°F (43.33°C) ASSE 1070 408.3
2. Public hand-washing facilities
> 85°F (29.44°C) and
< 110°F (43.33°C)ASSE 1070 or CSA B125.3 416.5
3. Individual shower valves ≤ 120°F (48.89°C) ASSE 1016 or ASME A112.18.1 /
CSA B125 424.3
4. Multiple (gang) showers ≤ 120°F (48.89°C) ASSE 1069 or CSA B125 424.3
5. Bathtub/whirlpool bathtubs
≤ 120°F (48.89°C) ASSE 1070 or CSA B125.3except as allowed by Section 424.3.
424.5
Section 424.9 — Water closet personal hygiene devicesSection 424.9 — Water closet personal hygiene devices
ASME A112.4.2 was added to the code to cover specialized water closets or water closet seats having sprays for personal hygiene.
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Water HeatersWater Heaters
Chapter 5
113
Section 501.2 – Water heater as space heaterSection 501.2 – Water heater as space heater
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Water-to-Air HeatExchanger
502.1.1 Elevation and protection502.1.1 Elevation and protection
Elevation of water heater ignition sources and mechanical damage protection requirements for water heaters shall be in accordance with the International Mechanical Code and the International Fuel Gas Code.
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502.5 Clearance for Maintenance and Replacement 502.5 Clearance for Maintenance and Replacement
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Section 503.1 – Cold water line valveSection 503.1 – Cold water line valve
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Water Heater Valve
Section 504.4.1 - Installation of temperature and pressure relief valvesSection 504.4.1 - Installation of temperature and pressure relief valves
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Section 504.4.1 - Installation of temperature and pressure relief valvesSection 504.4.1 - Installation of temperature and pressure relief valves
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Section 504.4.1 – InstallationSection 504.4.1 – Installation
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CORRECT INSTALLATION
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Section 504.6 - Requirements for discharge pipingSection 504.6 - Requirements for discharge piping
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Section 504.7- Required panSection 504.7- Required pan The language states that
where drain pans are required for water heaters they are only required for storage tank-type water heaters or hot water storage tanks. Tank-less water heaters are exempt.
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Section 505.1 - Unfired vessel insulation Section 505.1 - Unfired vessel insulation
Unfired hot water storage tanks shall be insulated to R-12.5 (h × ft2 × °F)/Btu (R-2.2 m2 × K/W).
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Indirect/Special WastesIndirect/Special Wastes
Chapter 8
124
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Section 801.1 - ScopeSection 801.1 - Scope Food-handling establishments Sterilizers Clear-water waste Swimming pools Methods of providing air breaks or air gaps Neutralizing devices for corrosive waste
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Section 802.1 - Where requiredSection 802.1 - Where required
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Section 802.1.2 – Floor drains in food storage areasSection 802.1.2 – Floor drains in food storage areas
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Section 802.1.3 - Potable clear-water wasteSection 802.1.3 - Potable clear-water waste
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Section 802.1.8 - Food utensils, dishes, pots and pans sinksSection 802.1.8 - Food utensils, dishes, pots and pans sinks Sinks used for the washing, rinsing or sanitizing
of utensils, dishes, pots, pans or service ware used in the preparation, serving or eating of food must connect indirectly to the drainage system through an air gap or air break.
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Section 802.2 – InstallationSection 802.2 – Installation
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Section 802.2.1 – Air gapSection 802.2.1 – Air gap
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2D
Waste Receptor
Section 802.2.2 - Air BreakSection 802.2.2 - Air Break
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Section 802.3 - Waste receptorsSection 802.3 - Waste receptors
In addition to waste receptors prohibited from being in bathrooms or toilet rooms, they are now prohibited from being in plenums, crawl spaces, attics, interstitial spaces above ceilings and below floors.
Waste receptors in those locations can dry out or overflow without knowledge of the occupants.
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Section 802.3 –Waste receptors
Section 802.3 –Waste receptors
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Section 802.4 - StandpipesSection 802.4 - Standpipes
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Traps, Interceptors and SeparatorsTraps, Interceptors and Separators
Chapter 10
136
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Section 1002.1 - Fixture trapsSection 1002.1 - Fixture traps An exception for parking garage floors drains
allows them to run without traps when they run to a storm sewer.
Traps for individual floor drains are not required provided that the drains are connected to a main trap before discharge to a combined sewer.
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Section 1002.1, Exception 4 for Floor Drain Traps in Parking GaragesSection 1002.1, Exception 4 for Floor Drain Traps in Parking Garages
2015 IPC Design, Installation and Inspection Principles 138
Section 1002.1 - Fixture trapsSection 1002.1 - Fixture trapsINLET
OUTLET
EXCEPTION #1
EXCEPTION #2
CROWN WEIRSEAL
DIP
WATER CLOSETS HAVEAN INTEGRAL TRAP
SINK
MAX. VERTICALDISTANCE - 24"
TWO-COMPARTMENT SINK
MAX. DISTANCE - 30"MAX. DISTANCE - 6"
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Section 1002.3 - Prohibited trapsSection 1002.3 - Prohibited traps
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“DRUM TRAP”
EXCEPTION: WHEN USED AS A SOLIDS
INTERCEPTOR
”S” TRAP TENDS TO SELF-SIPHON
“OLD STYLE” FLOOR DRAIN WITH INTERIOR PARTITION
BELL TRAPCROWN-VENTED TRAP
TRAP WITH FLOAT BALL (MOVING PARTS)
WATER SEAL
VENTINLET
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Section 1002.4 - Trap sealsSection 1002.4 - Trap seals Minimum liquid seal is 2 inches (51 mm) Maximum liquid seal is 4 inches (102 mm) When evaporation threatens the trap seal, the
seal shall be protected by one of four methods Trap seal protection shall conform to ASSE
1018, ASSE 1044, or ASSE 1072
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Trap seal barrierTrap seal barrier
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Section 1002.4 - Trap sealsSection 1002.4 - Trap seals Trap seal primer valve discharge piping must connect
to the trap above the trap seal water line.
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Section 1003.1 -Interceptors and separatorsSection 1003.1 -Interceptors and separators Provided to prevent the discharge of: Oil Grease Sand Substances harmful to the system, e.g. acid, heavy
metals
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Section 1003.2 - Approval Section 1003.2 - Approval
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Section - 1003.3.1Section - 1003.3.1 Grease interceptors and automatic grease
removal devices required A list of equipment and fixtures that require their
waste water be treated in commercial settings
grease interceptors can be installed in series, instead of requiring the replacement of an existing grease interceptor that is too small.
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Grease Interceptor In SeriesGrease Interceptor In Series
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Section 1003.3.1 - Grease interceptors and automatic grease removal deviceSection 1003.3.1 - Grease interceptors and automatic grease removal device
2015 IPC Design, Installation and Inspection Principles 148
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Section 1003.3.2 - Food waste grindersSection 1003.3.2 - Food waste grinders
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Outside Grease InterceptorsOutside Grease Interceptors
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Section 1003.3.5 - Automatic grease removal devicesSection 1003.3.5 - Automatic grease removal devices
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Gravity grease interceptorsGravity grease interceptors
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Section 1003.4.2 - Oil separator design Section 1003.4.2 - Oil separator design Oil separators not
designed in accordance with Sections 1003.4.2.1 and 1003.4.2.2, must be listed and labeled.
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Section 1003.6 – clothes washer discharge interceptorSection 1003.6 – clothes washer discharge interceptor Applies to
commercial and industrial clothes washers
Applies to residential clothes washers when there is more than one in a laundry room
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Section 1003.9 - Venting of grease interceptorSection 1003.9 - Venting of grease interceptor
PRE-RINSE ANDFOOD WASTEGRINDER
POT WELLSINK
3 COMPARTMENTSINK
FLOORDRAINS
FLOORDRAINS
GREASE INTERCEPTOR
DISHWASHER
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Venting of Interceptors and SeparatorsVenting of Interceptors and Separators
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Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
1. There shall be at least 21 inches (533 mm) of clearance in front of a lavatory to any wall or fixture.
True
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False
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
2. The waste outlet of a pressure, temperature or other relief valve shall be indirectly connected to the __________________ (Section 504.6).
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drainage system
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
3. Standpipes shall extend a minimum of _________________ and a maximum of _________________ inches above a trap.
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18 inches (457 mm) 42 inches (1067 mm)
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
4. The vertical distance from the fixture outlet to the trap weir shall not exceed ______________________ .
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24 inches (610 mm)
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Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
5. Bathtubs require a waste outlet and an _________ outlet both connected to 1½ inch (38 mm) pipe.
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overflow
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
6. An indirect waste receptor installed below the floor in a crawl space is a code violation.
True
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False
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
7. When a water heater is connected to an additional storage tank, both the water heater and the tank must have temperature and pressure relief valves.
True
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False
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
8. When lack of space or capacity is a factor, an additional grease interceptor may be added upstream of the existing grease interceptor.
Yes
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No
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Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
Module 2 - Fixtures, Water Heaters, Indirect/Special Waste and Separators
9. A tankless water heater (does or does not) require a water heater pan.
Does Not
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Does
Water Systems, Sanitary Drainage and VentingWater Systems, Sanitary Drainage and Venting
Module 3
166
Water Supply and DistributionWater Supply and Distribution
Chapter 6
167
601.5 Rehabilitation601.5 Rehabilitation Existing water piping
systems may be rehabilitated using an epoxy liner system that complies with ASTM F 2831.
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Section 602.2 – Potable Water RequiredSection 602.2 – Potable Water Required Only potable water shall be supplied to plumbing
fixtures that provide water for drinking, bathing or culinary purposes, or for the processing of food, medical or pharmaceutical products.
Unless otherwise provided in this code, potable water shall be supplied to all plumbing fixtures.
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602.3.4 Disinfection of system602.3.4 Disinfection of system All newly constructed water supply systems shall
be disinfected as outlined in this code.
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Section 603.1 - Size of Water Service PipeSection 603.1 - Size of Water Service Pipe
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Section 603.2 - Separation of Water Supply and Building Sewer Section 603.2 - Separation of Water Supply and Building Sewer
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12" MIN.WATER SERVICE
ON SHELF
BUILDING SEWERWATER SERVICE INSEPARATE TRENCH
BUILDING SEWER INSEPARATE TRENCH
UNEXCAVATED OR COMPACTEDEARTH SEPARATING TRENCHES COMMON TRENCH
5' MINIMUM
Exception 1
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Section 603.2 - Separation of Water Service and Building SewerSection 603.2 - Separation of Water Service and Building Sewer
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Sewer pipe not listed in Table 702.2
Section 603.2.1 - Water Service Near Sources of PollutionSection 603.2.1 - Water Service Near Sources of Pollution Potable water service pipes shall not be
located in, under or above: Cesspools Septic tanks Septic tank drainage fields or seepage pits
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Section 604 - Design of Building Water Distribution SystemSection 604 - Design of Building Water Distribution System Shall conform to accepted engineering practice.
Appendix E describes two methods of sizing a water supply system. Section E103.3 (Segmented loss method) Section E 201.1 (Based on water fixture units or old
method)
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Example of E201.1 (Residential Method)Example of E201.1 (Residential Method)
The following example utilizes Appendix E (Residential Method).
A building with 15’ elevation difference to the highest water supply outlet.
Available Pressure = 65 psi low, 70 psi high. Developed length of 40’. Combined fixture unit value of 27.5.
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Step Task1 Obtain the minimum service pressure (psig) available from the local water authority.
2 Adjust for elevation conditions (Subtract 0.5 psi for each foot of height. If the highest water supply outlet is below the meter, add .5 psi for each foot of difference. Take in consideration the pressure reducing valve.
3 Deduct for all pressure losses caused by special equipment, such as backflow preventers, water softeners, filters, etc. The loss is determined in accordance with the manufacture’s. specifications. Table 604.3
4 Determine if fixture water controls require more than 8 psig minimum to operate. (Note the resulting figure). Temperature-controlled shower valve deduct in excess of 8 psi (12).
5 Note the resulting figure.
6 Determine the approximate length of piping from the water main to the most remote fixture in house. (The hot water circuit may be the longest length.)
7 Using the “Combined” column of Table E103.3(2) add the water system fixture units (wsfu ) of all fixtures that are a part of the system, and note the resulting figure.
8 In the appropriate pressure range (from step 5) of the Table E201.1, find the maximum developed length through water heater or cold water branches and multiply by 1.2 to account for fittings. Read down this column until you find the (wsfu) that is equal to or greater than the total (wsfu) obtained in Step 7.
9 Read across this row to obtain the minimum meter and service pipe size from column one.
10 Determine required size of each branch, by starting at the most remote outlet and work back to the main distribution pipe. Determine the (wsfu) on a given section of piping and using the same pressure range and maximum developed length column as in Step 8, locate the (wsfu) and read across that row to obtain the pipe size for that section.
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Example of E201.1 (Residential Method) cont.Example of E201.1 (Residential Method) cont.Steps
ResultsStep 1. 65 65 Step 2. 15’ x 0.5 - 7.5Step 3. 3 psi - 3 Step 4. Temperature-controlled showers deduct in excess of 8 psi -12Step 5. Resulting pressure 42.5Step 6. 48’ = (40’ x 1.2) 48’Step 7. 1 bathroom group = 2 x 3.6 (private use) 7.2
Kitchen sink = 1 x 1.4 1.4Dishwasher = 1 x 1.4 1.4Hose bibb = 3 x 2.5 7.5Sprinkler head = 5 x 2.0 10Total 27.5
Table E103.3(2)
Example
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Static Pressure Loss
Loss of Pressure (-)Example:Pressure at meter = 80 psiElevation change = 20 feetP = 0.5 X Head (feet)P = 0.5 X 20 feetP = 10 psiPressure for sizing, then, is80 psi - 10 psi = 70 psiMeter
Elevation
Presure (pounds per square inch = 0.5 x head (feet)
Static Pressure Gain
MeterElevation
Gain in Pressure (+)Pressure for sizing. then, is80 psi +10 psi = 90 psi
Back
TABLE E103.3(2) (Private) WATER SUPPLY FIXTURE UNIT VALUES FOR VARIOUS
PLUMBING FIXTURES AND FITURE GROUPS
TABLE E103.3(2) (Private) WATER SUPPLY FIXTURE UNIT VALUES FOR VARIOUS
PLUMBING FIXTURES AND FITURE GROUPS
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TYPE OF FIXTURES OR GROUP OF FIXTURESWATER SUPPLY FIXTURE UNIT VALUE
(w.s.f.u.)HOT COLD COMBINED
Bathtub (with/without overhead shower head) Private 1.0 1.0 1.4Clothes washer (Private) 1.0 1.0 1.4Dishwasher (Private) 1.4 — 1.4Bathroom group (Private), (Flush tank) with bathtub or shower stall 1.5 2.7 3.6Half-bath group (water closet and lavatory) 0.5 2.5 2.6Hose bibb (Silcock)ª — 2.5 2.5Kitchen group (dishwasher and sink with/without garbage grinder) 1.9 1.0 2.5Kitchen sink (private) 1.0 1.0 1.4Laundry group (clothes washer standpipe and laundry tub) 1.8 1.8 2.5Laundry tub (private) 1.0 1.0 1.4Lavatory (private) 0.5 0.5 0.7Shower stall (private) 1.0 1.0 1.4Water closet (tank type), (private) — 2.2 2.2
Back
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Example of E201.1 (Residential Method) contExample of E201.1 (Residential Method) cont Step 8. From the “Pressure Range 40-49 psi”
(from step 5) column, read down the 60’ column.
Step 9. The meter size from column one is ¾” and the main distribution pipe shall be 1 inch.
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Table E201.1
TABLE E201.1MINIMUM SIZE OF WATER METERS, MAINS AND
DISTRIBUTION PIPING BASED ON WATER SUPPLY FIXTURE UNIT VALUES (w.s.f.u.)
TABLE E201.1MINIMUM SIZE OF WATER METERS, MAINS AND
DISTRIBUTION PIPING BASED ON WATER SUPPLY FIXTURE UNIT VALUES (w.s.f.u.)
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Pressure Range-40 to 49
METER AND SERVICE PIPE
(INCHES)
DISTRIBUTIONPIPE
(INCHES)
MAXIMUM DEVELOPMENT LENGTH (feet)
40 60 80 100 150 200 250 300 400 500
¾ ½ ª 3 2.5 2 1.5 1.5 1 1 .5 .5 .5
¾ ¾ 9.5 9.5 8.5 7 5.5 4.5 3.5 3 2.5 2
¾ 1 32 32 32 26 18 13.5 10.5 9 7.5 6
1 1 32 32 32 32 21 15 11.5 9.5 7.5 6.5
¾ 1¼ 32 32 32 32 32 32 32 27 21 16.5
1 1¼ 80 80 80 80 65 52 42 35 26 20
1½ 1¼ 80 80 80 80 75 59 48 39 28 21
1 1½ 87 87 87 87 87 87 87 78 65 55
1½ 1½ 151 151 151 151 151 130 109 93 75 63
Step 8
Section 604.5 - Size of Fixture SupplySection 604.5 - Size of Fixture Supply
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Table 604.5
Table 604.5Minimum Sizes of Fixture Water Supply Pipes
Table 604.5Minimum Sizes of Fixture Water Supply Pipes
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Back
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Section 604.9 – Water HammerSection 604.9 – Water Hammer
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Chapter 6 – Water Supply and DistributionChapter 6 – Water Supply and Distribution
2015 Section Title Description of Change
Table 605.3 Water Service Pipe
Chlorinated polyvinyl chloride/aluminum/chlorinated polyvinyl chloride
Table 605.4 Water Distribution Pipe
Table 605.7 Valves
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ValvesValves Valves must be
compatible with the type of piping being used
Valves shall meet the standards in Table 605.7
Valve shall comply with NSF 61
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605.2.1 Lead content of drinking water pipe and fittings605.2.1 Lead content of drinking water pipe and fittings Everything used in a
water supply shall comply with NSF 372 which stipulates no more than .25 of a percent of lead content
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Section 605.24.1 – Copper or copper-alloy tubing to galvanized steel pipeSection 605.24.1 – Copper or copper-alloy tubing to galvanized steel pipe
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Section 606 - Installation of the Building Water Distribution SystemSection 606 - Installation of the Building Water Distribution SystemSection 606.1 Location of Full Open Valves Full-open valves shall
be installed in the following locations: Curb Valve
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Section 606.2 -Location of Shutoff ValvesSection 606.2 -Location of Shutoff Valves Shutoff valves shall be installed in the following
locations: On the fixture supply to each plumbing fixture other
than bathtubs and showers in one- and two-family residential occupancies, and other than in individual sleeping units that are provided with unit shutoff valves in hotels, motels, boarding houses and similar occupancies.
On the water supply pipe to each sillcock. On the water supply pipe to each appliance or
mechanical equipment.
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Section 606.2 - Location of Shutoff Valves Shutoff Valves For Each FixtureSection 606.2 - Location of Shutoff Valves Shutoff Valves For Each Fixture
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Valve at Entrance to Building and on Discharge Side of MeterValve at Entrance to Building and on Discharge Side of Meter
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Dwelling Unit ValveDwelling Unit Valve
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Valves for Each Riser & Down FeedValves for Each Riser & Down Feed
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Section 606.4 -Valve IdentificationSection 606.4 -Valve Identification
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Section 606.4 requires valveto be identified
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Section 606.7 – Labeling of water distribution pipes in bundles Section 606.7 – Labeling of water distribution pipes in bundles
This new section requires that water distribution piping that is in bundles have labels to identify the direction of flow and contents.
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Section 607.1 – Where requiredSection 607.1 – Where required
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Section 607.1.1 - Temperature limiting meansSection 607.1.1 - Temperature limiting means This section was
added to prohibit a water heater thermostat from being used as the temperature limiting device where the code requires a limit for hot or tempered water.
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Section 607.2 – Hot water supply temperature maintenance Section 607.2 – Hot water supply temperature maintenance The threshold for where a hot water temperature
maintenance system is required was lowered from 100 feet to 50 feet (30 480 mm to 15 240 mm).
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Section 607.2 – Hot or Tempered Water Supply to FixtureSection 607.2 – Hot or Tempered Water Supply to Fixture
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607.2.1 maintaining heated water temperature607.2.1 maintaining heated water temperature Residential
occupancies shall comply with the energy code section R403.5 .1
Commercial occupancies shall comply with the energy code section C404.6
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Section 607.3 - Example of Thermal Expansion ControlSection 607.3 - Example of Thermal Expansion Control
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Example of closed system
Pressure Reducing Valve with Thermal Expansion BypassPressure Reducing Valve with Thermal Expansion Bypass
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607.5 [E] - Pipe insulation 607.5 [E] - Pipe insulation The International Energy Conservation
Code regulates pipe insulation, which is sometimes installed by the plumbing contractor.
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Section 607.5 - Pipe insulation Section 607.5 - Pipe insulation
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Section 608.7 – Stop-and-waste valves prohibitedSection 608.7 – Stop-and-waste valves prohibited
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Section 608.8 - Identification of nonpotable water Section 608.8 - Identification of nonpotable water
Wherever nonpotable water systems are installed the piping must be identified.
Signage is required at outlets Color of piping, letters and letter size is
addressed in this section Identification tape is allowed Potable water used for cooling equipment can
not be returned to the potable water system
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Air Gap for a FaucetAir Gap for a Faucet
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Air Gap in Piping System Air Gap in Piping System
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Section 608.13.2 – Reduced pressure principle backflow prevention assemblies Section 608.13.2 – Reduced pressure principle backflow prevention assemblies
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Section 608.13.3 – Backflow preventer with intermediate atmospheric ventSection 608.13.3 – Backflow preventer with intermediate atmospheric vent
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Section 608.13.6 – Atmospheric-type vacuum breakersSection 608.13.6 – Atmospheric-type vacuum breakers
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Section 608.14.2 – Protection of backflow preventersSection 608.14.2 – Protection of backflow preventers
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Section 608.14.2 – Protection of backflow preventersSection 608.14.2 – Protection of backflow preventers
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Table 608.15.1 -Minimum Required Air GapsTable 608.15.1 -Minimum Required Air Gaps
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FixtureMinimum Air Gap
Away from a walla (inches) Close to a wall (inches)
Lavatories and other fixtures with effective openings not greater than 1/2 inch in diameter 1 1½Sinks, laundry trays, gooseneck back faucets and other fixtures with effective openings not greater than ¾ inch in diameter 1.5 2.5Over-rim bath fillers and other fixtures with effective openings not greater than 1 inch in diameter 2 3Drinking water fountains, single orifice not greater than 7/16 inch in diameter or multiple orifices with a total area of 0.150 square inch (area of circle 7/16 inch in diameter)
1 1½
Effective openings greater than 1 inch Two times the diameter of the effective opening
Three times the diameter of the effective opening
For SI: 1 inch = 25.4 mma. Applicable where walls or obstructions are spaced from the nearest inside-edge of the spout opening a
distance greater than three times the diameter of the effective opening for a single wall, or a distance greater than four times the diameter of the effective opening for two intersecting walls.
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7”
2”
Air gap = 4 inches
For SI: 1 inch = 25.4 mm
6018.15.1(3)Air Gap: Located Near Single Wall
6”
2”
Example 1Cross Section of Supply Outlet
Example 2Cross Section of Supply Outlet
Air gap = 6 inches
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9”
2”
Air gap = 4 inches
For SI: 1 inch = 25.4 mm
6018.15.1(4)Air Gaps: Located Near Intersecting Wall
8”
2”
Example 1Intersecting Wall
Example 2Intersecting Wall
Air gap = 6 inches
9”
8”
Section 608.15.4.1 – Deck-mounted and integral vacuum breakersSection 608.15.4.1 – Deck-mounted and integral vacuum breakers
Lavatory and kitchen sink faucets with the primary outlet attached to a flexible hose must be protected by an integral vacuum breaker or be provided with a dedicated vacuum breaker.
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Section 608.15.4.2 – Hose connectionsSection 608.15.4.2 – Hose connections
These devices consist of two check valves with an atmospheric vent located between the check valves.
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Section 608.16.1 – Beverage dispensersSection 608.16.1 – Beverage dispensers
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Section 608.16.3 – Heat exchangersSection 608.16.3 – Heat exchangers
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Section 608.16.4 –Connections to automatic fire sprinkler systems and standpipe systems
Section 608.16.4 –Connections to automatic fire sprinkler systems and standpipe systems
2015 IPC Design, Installation and Inspection Principles 223
Section 608.16.4 – Connections to automatic fire sprinkler systems and standpipe systems
Section 608.16.4 – Connections to automatic fire sprinkler systems and standpipe systems
2015 IPC Design, Installation and Inspection Principles 224
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 57
Section 608.16.5 – Connections to lawn irrigation systemsSection 608.16.5 – Connections to lawn irrigation systems
2015 IPC Design, Installation and Inspection Principles 225
Section 609.2 – Water serviceSection 609.2 – Water service
2015 IPC Design, Installation and Inspection Principles 226
Sanitary DrainageSanitary Drainage
Chapter 7
227
Section 701 - Sanitary Drainage Section 701 - Sanitary Drainage
2015 IPC Design, Installation and Inspection Principles 228
Branch Interval
Building Sewer
Gate Valve
Check valve
Building Drain
Drain Stack
Soil Stack
Horizontal BranchWaste stack
Building Subdrain
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 58
Branch Interval ReviewBranch Interval Review
THIS IS A BRANCHINTERVAL
THIS ISNOT ABRANCHINTERVAL
FLOOR
FLOORSOIL OR WASTE STACK
10’-0
” STO
RY H
EIG
HT
(TY
P.)
7’-0
”
8’-0
” OR
MO
RE
2015 IPC Design, Installation and Inspection Principles 229 230
2015 IPC Design, Installation and Inspection Principles 231
Common Building Sewer Location within an Approved Public Sewer Easement
Common Building Sewer Location within an Approved Public Sewer Easement
LOT LINES
BUILDINGA
BUILDINGB
BUILDINGC
BUILDINGD
BUILDINGSEWER
BUILDINGSEWER
BUILDINGSEWER
BUILDINGSEWER
PUBLIC SEWER
DEDICATEDPUBLIC SEWEREASEMENT
2015 IPC Design, Installation and Inspection Principles 232
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 59
Building on Same Lot Example 2Building on Same Lot Example 2
PUBLICSEWER BUILDING
ABUILDING
B
BUILDING ASEWER
BUILDING BSEWER
PRIVATELY CONTROLLEDCOMMON SEWER PERMITTED
LOTLINE
2015 IPC Design, Installation and Inspection Principles 233
Section 701.4 - Sewage TreatmentSection 701.4 - Sewage Treatment Sewage or other waste from a plumbing system
that is deleterious to surface or subsurface waters shall not be discharged into the ground or into any waterway unless it has first been rendered innocuous through subjection to an approved form of treatment.
2015 IPC Design, Installation and Inspection Principles 234
Section 701.7 - ConnectionsSection 701.7 - Connections No direct connection of a steam exhaust, blow-
off or drip pipe to the building drain. Waste water discharge shall not be higher than
140°F (60°C). When higher temperatures exist, approved
cooling methods shall be provided.
2015 IPC Design, Installation and Inspection Principles 235
Section 701.9 – Drainage Piping In Food Service AreasSection 701.9 – Drainage Piping In Food Service Areas Exposed soil or waste piping shall not be
installed above any working, storage or eating surfaces in food service establishments.
2015 IPC Design, Installation and Inspection Principles 236
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 60
Above-ground Drainage & Vent Pipe
Above-ground Drainage & Vent Pipe
Table 702.1 identifies the materials that are approved and the standards with which these materials must comply.
2015 IPC Design, Installation and Inspection Principles 237
2015 IPC Table 702.1
Page 57
Underground Drainage & Vent Pipe
Underground Drainage & Vent Pipe
The materials listed in this table are for underground use within a building. The materials not allowed underground that were allowed above ground in Table 702.1 are the following:
2015 IPC Design, Installation and Inspection Principles 238
2015 IPC Table 702.2
Page 58
Building Sewer PipeBuilding Sewer Pipe Table 702.3
identifies the materials that are permitted and the standards with which these materials must comply.
2015 IPC Design, Installation and Inspection Principles 239
2015 IPC Table 702.3
Page 58
702.5 Temperature rating702.5 Temperature rating Where wastewater is more than 140°, the
drainage piping material shall be rated for the higher temperature.
If the drainage system piping is properly chosen for the high temperatures that will be encountered, the need for cooling is eliminated.
2015 IPC Design, Installation and Inspection Principles 240
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 61
703.6 combined sanitary and storm public sewer703.6 combined sanitary and storm public sewer The storm water and the sanitary sewer from the
building must enter the public sewer independently when the public sewer conveys both storm water and sewage.
2015 IPC Design, Installation and Inspection Principles 241
Section 704.1 - Slope of Horizontal Drainage PipingSection 704.1 - Slope of Horizontal Drainage Piping Horizontal drainage piping shall be installed in
uniform alignment at uniform slopes. The minimum slope of a horizontal drainage pipe shall be in accordance with Table 704.1.
2015 IPC Design, Installation and Inspection Principles 242
2015 IPC Table 704.1
Page 59
Section 704.3 - Connections to offsets and bases of stacksSection 704.3 - Connections to offsets and bases of stacks
2015 IPC Design, Installation and Inspection Principles 243
Horizontal Branch ConnectionsHorizontal Branch Connections
2015 IPC Design, Installation and Inspection Principles 244
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 62
Section 706.3 - Installation of fittings Section 706.3 - Installation of fittings
2015 IPC Design, Installation and Inspection Principles 245
2015 IPC Table 706.3
Page 62
Back-to-Back FixturesBack-to-Back Fixtures
2015 IPC Design, Installation and Inspection Principles 246
Figure 706.3(5)DOUBLE SANITARYTEE PERMITTED WHERE DEVELOPED LENGTH BETWEEN OUTLET OF WATER CLOSET AND CONNECTION IS 18 INCHES OR GREATER
706.4 Heel-or Side-Inlet Quarter Bends
706.4 Heel-or Side-Inlet Quarter Bends
2015 IPC Design, Installation and Inspection Principles 247
706.4 Heel- or Side-Inlet Quarter Bends706.4 Heel- or Side-Inlet Quarter Bends
2015 IPC Design, Installation and Inspection Principles 248
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 63
706.4 Heel- or Side-Inlet Quarter Bends706.4 Heel- or Side-Inlet Quarter Bends
2015 IPC Design, Installation and Inspection Principles 249
Section 708.1.1 -Cleanouts for Horizontal DrainsSection 708.1.1 -Cleanouts for Horizontal Drains
2015 IPC Design, Installation and Inspection Principles 250
Section 708.1.3 - Cleanouts at Sewer JunctionSection 708.1.3 - Cleanouts at Sewer Junction
2015 IPC Design, Installation and Inspection Principles 251
Section 708.1.4 - Change of DirectionSection 708.1.4 - Change of Direction
2015 IPC Design, Installation and Inspection Principles 252
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 64
Section 708.1.9 - ClearancesSection 708.1.9 - Clearances
2015 IPC Design, Installation and Inspection Principles 253
Table 709.1 - Drainage Fixture Units For Fixtures and GroupsTable 709.1 - Drainage Fixture Units For Fixtures and Groups
2015 IPC Design, Installation and Inspection Principles 254
2015 IPC Table 709.1
Page 65
Table 709.1 - Drainage Fixture Units For Fixtures and Groups (cont.)Table 709.1 - Drainage Fixture Units For Fixtures and Groups (cont.)
2015 IPC Design, Installation and Inspection Principles 255
Table 709.2Table 709.2
2015 IPC Design, Installation and Inspection Principles 256
2015 IPC Table 709.2
Page 64
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 65
Table 710.1(2) – Horizontal Fixture Branch and StacksªTable 710.1(2) – Horizontal Fixture Branch and Stacksª
Diameter of Pipe
(Inches)
Maximum Number of Drainage Fixture Units (dfu)
Total For Horizontal Branch
Stacks (b)
Total Discharge into One Branch
Interval
Total for Stack Three
Branch Intervals or Less
Total for Stack Greater Than Three Branch
Intervals
1-1/2 3 2 4 8
2 6 6 10 24
2-1/2 12 9 20 42
3 20 20 48 72
4 160 90 240 500
5 360 200 540 1,100
6 620 350 960 1,900
8 1,400 600 2,200 3,600
10 2,500 1,000 3,800 5,600
12 3,900 1,500 6,000 8,400
15 7,000 Note C Note C Note C
2015 IPC Design, Installation and Inspection Principles 257
2015 IPCTable
710.1(2)Page 66
Table 710.1(1) Building Drains and SewersTable 710.1(1) Building Drains and Sewers
2015 IPC Design, Installation and Inspection Principles 258
Diameter of Pipe(Inches)
Maximum Number of Drainage Fixture Units Connected To Any Portion of The Building Drain or the Building Sewer, Including Branches of The Building Drain
Slope per foot
1/16 inch 1/8 inch ¼ inch ½ inch
1 1/4 ___ ___ 1 1
1 1/2 ___ ___ 3 3
2 ___ ___ 21 26
2 1/2 ___ ___ 24 31
3 ___ 36 42 50
4 ___ 180 216 250
5 ___ 390 480 575
6 ___ 700 840 1,000
8 1,400 1,600 1,920 2,300
10 2,500 2,900 3,500 4,200
12 3, 900 4,600 5.600 6,700
15 7,000 8,300 10,000 12,000
380 DFU
Sizing Example: Branch Interval 710.1(2)Sizing Example: Branch Interval 710.1(2)
2015 IPC Design, Installation and Inspection Principles 259
BRANCH INTERVAL =
STACK
FLOOR
THE TOTAL D.F.U. OF HORIZONTAL BRANCHES A, B & C CANNOT
EXCEED THE TOTAL LISTED IN THE THIRD COLUMN OF TABLE 710.1(2)
FLOOR
8’
6’
Stack Sizing 710.1(2)Stack Sizing 710.1(2)
2015 IPC Design, Installation and Inspection Principles 260
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 66
Sizing of Stack Greater Than Three Branch Intervals 710.1(2)Sizing of Stack Greater Than Three Branch Intervals 710.1(2)
2015 IPC Design, Installation and Inspection Principles 261
Sizing of Stack Three Branch Intervals or Less 710.1(2) Sizing of Stack Three Branch Intervals or Less 710.1(2)
2015 IPC Design, Installation and Inspection Principles 262
Offsets in Drainage Piping (Buildings of 5 Stories or More)Offsets in Drainage Piping (Buildings of 5 Stories or More)
2015 IPC Design, Installation and Inspection Principles 263
VERTICAL STACK OFFSET
VERTICAL OFFSET SIZED AS A VERTICAL STACK PER TABLE 710.1(2)HORIZONTAL
BRANCH CONNECTIONS PROHIBITED UNLESS RELIEF VENT IS INSTALLED OR OFFSET SIZED AS BUILDING DRAIN
UPPER STACK HAS 5 OR MORE BRANCH INTERVALS
Offsets in Drainage Piping (Buildings of 5 Stories or More)Offsets in Drainage Piping (Buildings of 5 Stories or More)
2015 IPC Design, Installation and Inspection Principles 264
HORIZONTAL OFFSET SIZED AS A BUILDING DRAIN PER 710.1(1)
HORIZONTAL STACK OFFSET
HORIZONTAL BRANCH CONNECTIONS NOT PERMITTED
UPPER STACK HAS 5 OR MORE BRANCH INTERVALS
SIZED AS A VERTICAL STACK PER 713.1(2)
SIZED AS A VERTICAL STACK FOR ALL DFU IN THE STACK, BUT NOT LESS THAN THE SIZE OF OFFSET
2015 IPC Design, Installation and Inspection Principles
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Section 711.1.1 - Omission of vents for horizontal stack offsets Section 711.1.1 - Omission of vents for horizontal stack offsets Horizontal branches can now connect at any point in
a stack above or below a horizontal offset. Horizontal branches can connect to a horizontal offset provided that the connection point is 10 stack diameters downstream of the upper stack.
2015 IPC Design, Installation and Inspection Principles 265
Sewer Ejector InstallationSewer Ejector Installation
2015 IPC Design, Installation and Inspection Principles 266
Section 712.3.5 - Pump connection to the drainage systemSection 712.3.5 - Pump connection to the drainage system Pumps connected to the drainage system can now
connect to a building sewer, building drain, soil stack, waste stack or horizontal branch drain.
For a connection near the base of a stack, the distance has been reduced from 10 feet (3048 mm) to 10 stack diameters.
2015 IPC Design, Installation and Inspection Principles 267
Section 715.1 - Sewage backflowSection 715.1 - Sewage backflow This section changed to require a backwater
valve where the floor elevation of the plumbing fixtures is at or below the level for the next upstream manhole cover.
2015 IPC Design, Installation and Inspection Principles 268
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 68
Section 715 – Backwater ValvesSection 715 – Backwater Valves
2015 IPC Design, Installation and Inspection Principles 269
Section 715.1 - Sewage backflowSection 715.1 - Sewage backflow
2015 IPC Design, Installation and Inspection Principles 270
716 Vacuum Drainage Systems716 Vacuum Drainage Systems Drain fixtures by vacuum Installed per the manufacturer’s installation
instructions Fixtures are accorded the same DFU, as the
chapter specifies, counted where they discharge from the vacuum system
A vacuum test is required to demonstrate a tight system
2015 IPC Design, Installation and Inspection Principles 271
717 Pipe bursting existing sewers717 Pipe bursting existing sewers
2015 IPC Design, Installation and Inspection Principles 272
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 69
VentsVents
Chapter 9
273
Vents – Chapter NineVents – Chapter Nine Venting protects the trap seal by reducing
differential pressures within the drainage system.
Only plumbing systems with traps require vents, example: rainwater systems
2015 IPC Design, Installation and Inspection Principles 274
Distance from Trap to VentDistance from Trap to Vent
2015 IPC Design, Installation and Inspection Principles 275
Separation of Vent TerminalSeparation of Vent Terminal10' MINIMUM
10' MINIMUM
VENT
10' MINIMUM
2' MINIMUM AIR INTAKE
2' MINIMUM
ROOFTOP UNIT WITHOUTDOOR AIR INTAKE
2015 IPC Design, Installation and Inspection Principles 276
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 70
Frost closureFrost closure Increase to 3” min. Must be increased
one foot below the thermal envelope
2015 IPC Design, Installation and Inspection Principles 277
Section 903.4 - Prohibited use of vent terminalsSection 903.4 - Prohibited use of vent terminals
Vent terminals are prohibited from being used for any purpose other than venting.
Condensate drains included.
2015 IPC Design, Installation and Inspection Principles 278
Section 903.5 - Location of vent terminal Section 903.5 - Location of vent terminal
The vertical distance increased from 2 feet to 3 feet (610 mm to 914 mm) to coordinate with similar requirements for IMC vent terminal requirements.
2015 IPC Design, Installation and Inspection Principles 279
Section 903.6 – Extension through the wallSection 903.6 – Extension through the wall
2015 IPC Design, Installation and Inspection Principles 280
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 71
Vent TerminalVent Terminal
2015 IPC Design, Installation and Inspection Principles 281
Stack VentStack Vent
2015 IPC Design, Installation and Inspection Principles 282
Vent Stack 903.2Vent Stack 903.2
2015 IPC Design, Installation and Inspection Principles 283
VEN T STACK SIZEDPER TABLE 916.1- TO TAL DFU- SI ZE OF DRAIN STAC K- LE NGTH OF VENT ST ACK FIORMOBR AIN AVENT STACK MUSTCONNECT WITHINTHIS PORTION OFDRAINAGE SYSTEMBUI LDINGDR AIN10 Xs PI PEDIAMET ER
VENT STACK SIZED PER TABLE 916.1• TOTAL DFU• SIZE OF DRAIN STACK• LENGTH OF VENT STACK
FIVE OR MORE BRANCH INTERVALS
VENT STACK MUST CONNECT WITHIN THIS PORTION OF DRAINAGE SYSTEM
BUILDINGDRAIN 10 Xs PIPE
DIAMETER
Grade of VentsGrade of Vents
2015 IPC Design, Installation and Inspection Principles 284
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 72
Vent Connections Vent Connections
2015 IPC Design, Installation and Inspection Principles 285
Vertical Rise of Vent
Vertical Rise of Vent
2015 IPC Design, Installation and Inspection Principles 286
Improperly Connected Vent Serving a Drain
Improperly Connected Vent Serving a Drain
2015 IPC Design, Installation and Inspection Principles 287
Properly Connected Vent Serving a Drain
Properly Connected Vent Serving a Drain
2015 IPC Design, Installation and Inspection Principles 288
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 73
Horizontal Offset of Branch Vent
Horizontal Offset of Branch Vent
2015 IPC Design, Installation and Inspection Principles 289
Vent SizingVent Sizing
2015 IPC Design, Installation and Inspection Principles 290
Vent SizingVent Sizing
NOTE: ALL VENTS SHOWNLESS THAN 40'-0" INDEVELOPED LENGTH.
1 1/2" MAIN VENT
BUILDING DRAIN
2015 IPC Design, Installation and Inspection Principles 291
Section 907 —Vents for Stack OffsetsSection 907 —Vents for Stack Offsets
2015 IPC Design, Installation and Inspection Principles 292
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 74
Section 908 - Relief Vent ConnectionSection 908 - Relief Vent Connection
2015 IPC Design, Installation and Inspection Principles 293
Section 909.1 – Distance of Trap from VentSection 909.1 – Distance of Trap from Vent
2015 IPC Design, Installation and Inspection Principles 294
Distance from Vent to Trap Distance from Vent to Trap
2015 IPC Design, Installation and Inspection Principles 295
Violation: Shower Drain Does Not Connect Independently to Wet Valve Violation: Shower Drain Does Not Connect Independently to Wet Valve
2015 IPC Design, Installation and Inspection Principles 296
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 75
Section 909.2 – Maximum Fall of Fixture Drain Between Trap and VentSection 909.2 – Maximum Fall of Fixture Drain Between Trap and Vent
2015 IPC Design, Installation and Inspection Principles 297
Vent Connection Vent Connection
2015 IPC Design, Installation and Inspection Principles 298
Individual Fixture as Dry Vent for Horizontal Wet VentIndividual Fixture as Dry Vent for Horizontal Wet Vent
2015 IPC Design, Installation and Inspection Principles 299
Dry Vent for Vertical Wet Vent of Two Bathroom GroupsDry Vent for Vertical Wet Vent of Two Bathroom Groups
2015 IPC Design, Installation and Inspection Principles 300
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 76
Crown VentCrown Vent
2015 IPC Design, Installation and Inspection Principles 301
Individual VentsIndividual Vents
2015 IPC Design, Installation and Inspection Principles 302
Improperly Installed Individual VentsImproperly Installed Individual Vents
2015 IPC Design, Installation and Inspection Principles 303
Common Vents with Fixture Drains Connecting at Same LevelCommon Vents with Fixture Drains Connecting at Same Level
LAV
LAVDOUBLESANITARYTEE
1 1/4"
1 1/2"
BT
BTCOKS
KS
CO
DOUBLE WYE
BT SH
1 1/2"
2"
2"
1 1/4"
LAV
LAV
CO
DOUBLESANITARYTEE
1 1/4"
1 1/2"
WC
BT
3"
1 1/2"
SANITARY TEEWITH SIDE INLET
WC
WC
DOUBLE WYE3"
1 1/2"
SH
SH2"
2"
2"
1 1/4"
CO
1 1/4"
2"1 1/2"
1 1/4"
2"2" CO
CO
2015 IPC Design, Installation and Inspection Principles 304
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 77
Common Vents with Fixture Drains Connecting at Different LevelCommon Vents with Fixture Drains Connecting at Different Level
2015 IPC Design, Installation and Inspection Principles 305
Single Bathroom Group Wet VentSingle Bathroom Group Wet Vent
2015 IPC Design, Installation and Inspection Principles 306
ITEMMINIMUM
SIZEDFUs
TABLE 709.1
LAV FIXTURE DRAINSH FIXTURE DRAINWC FIXTURE DRAIN
A-Ba
B-Ca
C-Da
1¼”2”3”
1½”a
2”a
3”a
123126
A-X 1½” N/A
a = from Table 909.3N/A = Not Applicable
Double Bathroom Group (Private) Wet VentDouble Bathroom Group (Private) Wet Vent
2015 IPC Design, Installation and Inspection Principles 307
DRAIN COMPONENT
MINIMUM SIZE
DFUs TABLE 709.1
LAV DRAINBT DRAINWC DRAIN
A-Ba
B-Ca
C-Da
D-Ea
1¼”1½” 3”2”a
2”a
2½”a
3”a
1232269
A-X 1½” N/A
a = from Table 909.3N/A = Not Applicable
Section 913 - Waste Stack VentSection 913 - Waste Stack Vent
2015 IPC Design, Installation and Inspection Principles 308
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 78
Section 911 Circuit Venting (Back-To-Back Water Closets Circuit Vented)Section 911 Circuit Venting (Back-To-Back Water Closets Circuit Vented)
2015 IPC Design, Installation and Inspection Principles 309
Sizing A Circuit Vent SystemSizing A Circuit Vent System
2015 IPC Design, Installation and Inspection Principles 310
The vent shall connect between the two most upper stream fixture drains
A maximum of eight fixtures are permitted to be circuit vented
Each fixture drain shall connect horizontally to the horizontal branch being circuit vented
1
2
3
4
5
67
8
Sizing a Circuit Vent SystemSizing a Circuit Vent System
2015 IPC Design, Installation and Inspection Principles 311
Each separate circuit-vented horizontal branch that is interconnected shall be sized independently in accordance with Section 911.3.
The downstream circuit-vented horizontal branch shall be sized for the total discharge into the branch, including the upstream branches and the fixtures within the branch.
Multiple Circuit VentingMultiple Circuit Venting
2015 IPC Design, Installation and Inspection Principles 312
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 79
2015 IPC Design, Installation and Inspection Principles 313
Multiple Circuit Venting In Parallel
Entire length of vent section is uniformly sized based on total d.f.u. load on branch.
Each separate circuit-vented horizontal branch that is interconnected shall be sized independently in accordance with Section 911.3.
Circuit Vent with Relief Vent ConnectionCircuit Vent with Relief Vent Connection
2015 IPC Design, Installation and Inspection Principles 314
A relief vent shall be provided for circuit vented horizontal branches receiving the discharge of four or more water closets and connecting to a drainage stack that receives the discharge of soil or waste from upper horizontal branches.
The relief vent shall connect to the horizontal branch drain between the stack and the most downstream fixture drain of the circuit vent.
Circuit-vented Branch with Additional Fixture ConnectionsCircuit-vented Branch with Additional Fixture Connections
2015 IPC Design, Installation and Inspection Principles 315
Section 915 – Combination Waste and Vent SystemSection 915 – Combination Waste and Vent System
ISLAND SINKFIXTURE DRAIN
COMBINATION DRAINAND VENT (OVERSIZEDDRAIN)
FIXTURE DRAIN FOR SINK - 1 1/2"COMBINATION DRAIN AND VENT - 2"
SINK
FD
FD
LAV
SINK
1 1/2"
2"
2"
1 1/4"
COMBINATION DRAINAND VENT
2"2"
3"(2 1/2" PERMITTED)
1 1/2"
FIXTURE DRAINWITHIN DISTANCEFROM TRAP TOVENT
EXTENSION OFBUILDING DRAIN
2015 IPC Design, Installation and Inspection Principles 316
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 80
Section 915 – Vertical Fixture Drain Component in Combination Waste and Vent System
Section 915 – Vertical Fixture Drain Component in Combination Waste and Vent System
2015 IPC Design, Installation and Inspection Principles 317
Section 915 – Combination Waste and Vent System Section 915 – Combination Waste and Vent System
In a combination waste and vent system, the drain also serves as the vent for the fixture.
The system is commonly used when floor drains are installed.
It is also practical to use in laboratories equipped with island sinks.
2015 IPC Design, Installation and Inspection Principles 318
Section 915 – Combination Waste and VentSection 915 – Combination Waste and Vent
2015 IPC Design, Installation and Inspection Principles 319
Section 915 – Combination Waste and VentSection 915 – Combination Waste and Vent
2015 IPC Design, Installation and Inspection Principles 320
2015 IPC Design, Installation and Inspection Principles
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Section 915.2.4 – Combination Waste and VentSection 915.2.4 – Combination Waste and Vent
2015 IPC Design, Installation and Inspection Principles 321
Section 916 – Island Fixture VentSection 916 – Island Fixture Vent
2015 IPC Design, Installation and Inspection Principles 322
Section 917Section 917 Single Stack Vent System Single-stack venting was added to
the code. This type of venting is similar to the
Philadelphia-stack drainage system that has been used in the Philadelphia, PA area for more than a century.
2015 IPC Design, Installation and Inspection Principles 323
Module 3Module 3
1. All water supply pipe installed underground and outside of the structure shall have a working pressure rating of not less than 160 psi.
True
2015 IPC Design, Installation and Inspection Principles 324
False
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 82
Module 3Module 3
2. A sanitary tee may be used for a horizontal-to-horizontal change in direction.
False
2015 IPC Design, Installation and Inspection Principles 325
True
Module 3Module 3
3. What is the minimum size of a building drain with a total of 36 dfu connected thereto with a 1/8-inch slope? _________________________
2015 IPC Design, Installation and Inspection Principles 326
3 inches
Module 3Module 3
4. A waste stack must not receive the discharge of ______________________.
2015 IPC Design, Installation and Inspection Principles 327
water closets and urinals
Module 3Module 3
5. Polyethylene of raised temperature plastic may be joined by ____________ or mechanical joints.
2015 IPC Design, Installation and Inspection Principles 328
flared
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 83
Module 3Module 3
6. Bundles of PEX must be _____________ to indicate direction of flow.
2015 IPC Design, Installation and Inspection Principles 329
labeled
Module 3Module 3
7. The water heater thermostat may be used to temper the water at the shower.
False
2015 IPC Design, Installation and Inspection Principles 330
True
Module 3Module 3
8. What code regulates the installation of solar heating systems?
________________
2015 IPC Design, Installation and Inspection Principles 331
IMC
Module 3Module 3
9. On a single stack vent system, if there were three water closets on the stack, the minimum size of the stack would be _________________ diameter.
2015 IPC Design, Installation and Inspection Principles 332
4 inches
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 84
Module 3Module 3
10. A plumbing system utilizing air admittance valves does not need to have a vent to the outdoors.
False
2015 IPC Design, Installation and Inspection Principles 333
TrueStorm Drains, Special Piping and Storage Systems and Gray Water Recycling Systems
Storm Drains, Special Piping and Storage Systems and Gray Water Recycling Systems
Module 4
334
Storm DrainageStorm Drainage
Chapter 11
335
Section 1105.1Section 1105.1 Roof drains are to be installed in accordance
with the manufacturer’s installation instructions and that roofing membrane materials must not block the opening of the drain.
2015 IPC Design, Installation and Inspection Principles 336
2015 IPC Design, Installation and Inspection Principles
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Section 1105.2Section 1105.2 The flow rate of the specific roof drain must be
provided by the manufacturer This rate determines the storm drain piping that
can be connected to it Flow rate is determined at specific head
elevations above the inlet More head - greater flow rate
2015 IPC Design, Installation and Inspection Principles 337
Size of storm drain pipingSize of storm drain pipingBased on: The size of the roof and contributing areas The rainfall rate per hour for the specific area Slope of horizontal piping connected to the drain The flow rate or the specific roof drain at the
established head over the inlet The GPM of the roof is plugged into Table
1106.2 to determined vertical and horizontal piping diameters
2015 IPC Design, Installation and Inspection Principles 338
How to calculate GPM for the roofHow to calculate GPM for the roof A = roof and contributory area ( vertical walls
and parapets) leading to the drain .623 gal.= 1 inch of water over 1 square foot HR= rain delivered by 100 year event in inches
per hour as determined by this chapter or appendix B
A X { (HR X .623) divided by 60 minutes} = GPM load on roof drain and piping
2015 IPC Design, Installation and Inspection Principles 339
Sizing the drain and pipingSizing the drain and piping Determine the GPM of the roof Pick a roof drain with a flow rate equal to or
greater than the GPM of the roof Determine if horizontal piping is present and the
slope of that piping Use the table to determine the diameter of the
storm piping, the pipe rated GPM must be at least as great as the roof drain
2015 IPC Design, Installation and Inspection Principles 340
2015 IPC Design, Installation and Inspection Principles
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Special Piping and Storage SystemsSpecial Piping and Storage Systems
Chapter 12
341
What’s in the sectionWhat’s in the sectionMedical Gases—Section 1202 This section refers to NFPA 99 for medical gas
systems, inhalation anesthetic systems and vacuum piping systems.
Oxygen Systems—Section 1203 This section refers to NFPA 55 and NFPA 51 for
nonmedical oxygen system requirements.
342
Nonpotable Water SystemsNonpotable Water Systems
Chapter 13
343
Section 1301.1 through 1303.11Section 1301.1 through 1303.11 Gray water, nonpotable rainwater and reclaimed
water systems requirements such as: Water quality Materials Storage Permit Connection Disinfection and treatment Water testing Manuals for operation and maintenance
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Copyright 2015 International Code Council 87
Gray Water Recycling System for Flushing Water Closets and UrinalsGray Water Recycling System for Flushing Water Closets and Urinals
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Section 1302 – Systems for Flushing Water Closets and UrinalsSection 1302 – Systems for Flushing Water Closets and Urinals
This section is about the specific details for on-site nonpotable water reuse systems. Refer to the definition of “On-site nonpotable water reuse system” in Chapter 2.
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Section 1303 – Subsurface Landscape IrrigationSection 1303 – Subsurface Landscape IrrigationDesign based on: Amount of nonpotable water available daily The percolation rate of the specific soilInstallation covers: Trench width, depth and spacing Aggregate and backfill Distribution piping
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Module 4Module 4
1. A vertical leader with a diameter of 3 inches in an area with a rainfall rate of 2 inches (51 mm) per hour is capable of draining a projected roof area of 2,930 square feet (272 m2).
True
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False
2015 IPC Design, Installation and Inspection Principles
Copyright 2015 International Code Council 88
Module 4Module 4
2. A 40 by 80 foot (102 by 203 mm) roof is attached to a building on the 80 foot side of the wall which rises another 30 feet (762 mm) above the lower roof. The adjusted area (leaving out other parapets) for the roof would now be_______________ square feet (m2).
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4,400 (409)
Module 4Module 4
3. The water from a nonpotable water system used to flush a urinal will be blue or green
False
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True
Module 4Module 4
4. A nonpotable water system could be used for an irrigation system that includes sprinklers.
True
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False
352
International Code Council is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request.
This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
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353
Copyright Materials
This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is
prohibited.
© International Code Council 2016
2015 IPC Design, Installation and Inspection Principles 354
Thank you for participatingThank you for participating
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The ICC Training & Education Department
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Hyperlinked Slides
Beyond This Point
Hyperlinked Slides
Beyond This Point
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Table 608.1 Application of Backflow PreventersTable 608.1 Application of Backflow Preventers
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Copyright 2015 International Code Council 90
Table 608.1 Application of Backflow Preventers (cont)Table 608.1 Application of Backflow Preventers (cont)
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Table 608.8.3 Size of Pipe IdentificationTable 608.8.3 Size of Pipe Identification
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Pipe Diameter(inches)
Length BackgroundColor Field (inches)
Size of Letters(inches)
¾ to 1 1/4 8 0.5
1 ½ to 2 8 0.75
2 ½ to 6 12 1.25
8 to 10 24 2.5
Over 10 32 3.5
Back
Table 906.1(1-1/4” thru 5”only)Table 906.1(1-1/4” thru 5”only)
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Return
Table 916.(1 1-1/4” thru 5”only)Table 916.(1 1-1/4” thru 5”only)
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Return
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Copyright 2015 International Code Council 91
Table 909.3Table 909.3Table 909.3 Wet Vent Size
Wet Vent Pipe Size(inches)
Drainage Fixture Unit Load (dfu)
1-1/2 1
2 4
2-1/2 6
3 12
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Table 909.3Table 909.3Table 909.3 Wet Vent Size
Wet Vent Pipe Size(inches)
Drainage Fixture Unit Load (dfu)
1-1/2 1
2 4
2-1/2 6
3 12
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Table 910.4 Waste Stack Vent SizeTable 910.4 Waste Stack Vent Size
Stack Size(inches)
Maximum Number of Drainage Fixture Units (dfu)
Total Discharge into One Branch Interval
Total Discharge for stack
1-1/2 1 2
2 2 4
2-1/2 No limit 8
3 No limit 24
4 No limit 50
5 No limit 75
6 No limit 100
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