schematic report oct 23 08-part 3-mechanical · 2,500 cfm packaged ahu with dx cooling serving...

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October 23 2008 | PAGE 21

ICSS - SCHEMATIC DESIGN

JENSEN CHERNOFF THOMPSON ARCHITECTS

MECHANICAL

14. Mechanical

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14. Mechanical

MECHANICAL SCHEMATIC DESIGN BRIEF

ISSUED FOR REVIEW

for

Vancouver Island University International Centre for Sturgeon Studies

at

Nanaimo

Prepared By

COBALT ENGINEERING #303 – 4180 Lougheed Highway

Burnaby, BC V5C 6A7

Clients: Vancouver Island University

PROJECT NO: 08-6304-000

DATE: October 17, 2008

BUILDING SERVICES DESIGN BRIEF ________________________________________________________________________________

Cobalt Engineering

TABLE OF CONTENTS PAGE

1.0 EXECUTIVE SUMMARY.............................................................................................. 12.0 INTRODUCTION.......................................................................................................... 1

2.1 Project Description 12.2 Applicable Codes and Guidelines 22.3 Design Criteria 2

3.0 SUSTAINABLE DESIGN RECOMMENDATIONS ....................................................... 54.0 ENVELOPE REQUIREMENTS .................................................................................... 65.0 HVAC SYSTEM............................................................................................................ 7

5.1 Ventilation System 75.2 Cooling System 75.3 Heating System 85.4 Exhaust Air Systems 105.5 Stairwells/Ancillary Areas 105.6 Gas Services 105.7 Control System 11

6.0 PLUMBING................................................................................................................. 126.1 Cold Water Mains 126.2 Cold Water Service 126.3 Hot Water Service 126.4 Rainwater Disposal 126.5 Sanitary Drainage System 126.6 Grey Water Drainage System 136.7 Plumbing and Drainage Distribution 13

7.0 FIRE PROTECTION................................................................................................... 157.1 Sprinkler System 15

8.0 DRAWING REGISTER/DELIVERABLE ..................................................................... 168.1 DELIVERABLES 16

9.0 Closure ....................................................................................................................... 17

Appendix A Mechanical Equipment List

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14. MechanicalBUILDING SERVICES DESIGN BRIEF ________________________________________________________________________________

Cobalt Engineering Page 1 of 17

1.0 EXECUTIVE SUMMARY

This report describes the schematic design for the International Centre for Sturgeon Studies (ICSS) at Vancouver island University (VIU).

The report includes a number of options for the HVAC systems. The options are presented to allow the Owner to decide upon the most appropriate system weighing up, capital cost, maintenance and operating costs, energy efficiency and sustainability. The project is capital cost constrained due to escalation pressure on the original budget, however, the University is required to conform to LEED Gold Standards. As energy efficiency has a large impact on LEED score, the following options are presented with major differences

Option 1

Single 13,000 CFM 100% outdoor air packaged AHU with heat pipe heat recovery serving both floors.

VAV boxes with Electric Reheat for Level 1.

VRF Heat Pump System for Level 2 and air conditioned space on Level 1.

Gas fired domestic hot water tank.

Option 1a

As Option 1, but Electric Reheat on VAV boxes replaced with hot water heating coils served by a condensing boiler.

Gas fired domestic hot water tank replaced by hot water tank served by condensing boiler.

Option 1b

As Option 1, but AHU heat recovery system replaced by heat pump assisted run around coil system. Heat pump also serves VAV reheat coils and heats/cools aquatic systems (reducing cost of aquatic heat pumps supplied by aquatic system supplier).

Option 2

10,500 CFM 100% outdoor air packaged AHU with heat pipe heat recovery serving Ground Floor.

2,500 CFM packaged AHU with DX cooling serving Upper Floor. No heat recovery.

VAV boxes with hot water heating coils served by two (2) condensing boilers.

Split system air conditioning units required for rooms when cooling required.

Our recommendation for the most energy efficient and sustainable system is Option 1b. However, the capital cost of this system may prove to be beyond the project budget.

Option 1a would be the second choice in terms of sustainability.

Option 1 provides the lowest base system cost but uses electric heat to trim the room temperature on the Ground Floor. Electric heating is somewhat undesirable from a



sustainability perspective but is cost effective from a capital cost standpoint on such a small building.

Option 2 provides a more conventional approach and avoids the use of VRF heat pump technology. This is the least energy efficient of all the options and results in simultaneous heating and cooling on the Upper Floor. It does have the advantage of a separate AHU for the Upper floor. The hydronic heat pump system described in Option 1b could also be applied to this system to improve energy efficiency but this is likely to be cost prohibitive.

More of the pros and cons of each of the systems can be found within the report.

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2.0 INTRODUCTION

2.1 Project Description

The new International Center for Sturgeon Studies building will be located on the north side of the Vancouver Island University (VIU) campus in Nanaimo. The building will be constructed adjacent to the existing single level sturgeon research facility at building 391 at the south end of the property. The existing facility houses live sturgeon specimens within a 40,000 litre tank and will be kept functional during the construction of the new building.

The new two level structure will be constructed primarily of non-combustible material such as concrete and steel except for the upper roof of the main entry area. This area is open through two levels and will feature exposed glulam beams which are of combustible construction. The first floor will consist of wet labs spaces such as fish culture, larval culture, incubation, swim tunnel feed prep and research labs. One of the research labs is considered a leasable space as determined by VIU. All the aquatic lab functions will be performed on this level. The second floor will consist of a dry lab

*, diagnostic lab, resource room, project room, CCH lab,

offices, and CCH data & sample room and external aeration tower. All dry lab functions will be performed on this level. Also the mens & womens washroom and the janitor room are located at this level.

A second floor terrace (on first floor roof) will be accessible to the building occupants and will share space with mechanical roof top equipment.

A perimeter water entry room will be on the first floor with a smaller mechanical room located on the second floor.

The construction will allow for future extension to attach itself to the north face on the new building.

The project schedule has indicated the start of construction in February 2009 with the completion anticipate at the end of December 2009. Therefore the completion of the design document is anticipated for the end of January 2009.

For the building sustainability, LEED guidelines will be utilized for this project however LEED certification will not be pursued. Water conservation measures such as waterless or low flow urinals, dual flush water closets, hands free lavatory faucets, and low flow shower heads will be proposed for the washrooms facilities. Heat recovery in the air handling unit will be proposed for the air system serving the first floor and possibly the second floor. High level operable windows above the featured main entry area are available to promote natural ventilation using the stack effect, if a non-air conditioned solution is selected..

* Note: Dry Lab refers to a non-aquatic lab. In a traditional laboratory building, the dry lab would be considered a Wet Lab as it contains fume hood, chemicals, sinks, etc.



2.2 Applicable Codes and Guidelines

Applicable codes and guidelines for the project include:

1. 2006 BC Building Code 2. NFPA 13 for sprinkler systems 3. NFPA 10 for fire extinguisher 4. VIU Facility Construction Manual - Design Guidelines 5. B.C. Building Code (BCBC) 6. B.C. Fire Code 7. B.C. Plumbing Code 8. National Building Code (NBC) 9. National Fire Code (NFC) 10. City of Nanaimo Bylaws 11. Natural Gas Utilization Code 12. American Standards for Testing and Materials (ASTM) 13. American National Standards Institute (ANSI) 14. American Water Works Association (AWWA) 15. ASHRAE 55 Thermal Environment Conditions for Human Occupancy 16. ASHRAE 62 Ventilation for Acceptable Indoor Air Quality 17. ASHRAE/IES 90.1 “Energy Standards for Buildings Except Low-Rise Residential

Buildings 18. American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) 19. Canadian Standards Association (CSA) 20. Latest Revision of Z 316.5 Fume Hoods and Associated Exhaust Systems 21. CSA B51 Boiler Pressure Vessel and Pressure Piping Code 22. CSA B52 Mechanical Refrigeration Code 23. Sheet Metal and Air Conditioning Contractors’ National Association Inc. (SMACNA)

Manuals 24. Underwriters Laboratories of Canada (ULC) 25. Work Safe BC Regulations

2.3 Design Criteria

1. The outdoor design temperatures are as follows:

• Outdoor winter 1% design temperature: -9°C • Outdoor summer 2.5% dry bulb design temperature: 26°C • Outdoor summer wet bulb design temperature: 18°C

Indoor design temperatures are as follows for the respective rooms:

First Floor

Fish Culture Area • Indoor winter design temperature: 18°C - 21°C (60% - 90%RH) • Indoor summer design temperature: 18°C - 21°C (60% - 90%RH)

*

Research Labs • Indoor winter design temperature: 18°C - 21°C (60% - 90% RH) • Indoor summer design temperature: 24°C (60% - 90% RH)

* Target Conditions: No mechanical cooling of these rooms provided.

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Feed Storage Rooms – Conditions to be confirmed as these conditions require a cold room. • Indoor winter design temperature: 10°C • Indoor summer design temperature: 10°C

Remainder of first floor rooms • Indoor winter design temperature: 18°C - 21°C (max. 60% RH)

*

• Indoor summer design temperature: 24°C (max. 60% RH)

Second Floor • Indoor winter design temperature: 21°C • Indoor summer design temperature: 24°C

2. Office and Second Floor Lab Air Conditioning Loads (to be confirmed) by. • Lighting: 1.0w/ft² • Equipment: 1.0w/ft² • Occupancy: 1 person per 150 ft² + 25% capacity

3. Heat gain from people: • 90W/person Sensible • 60w/person Latent

4. Occupancy Period • It is anticipated that the first floor lab areas will have 24 hour operation due to live

specimens. • It is anticipated that the second floor will operate regular office hours, with

unoccupied mode set back for the laboratories.

5. Construction Values • Glazing - 2.8 w/m²/°C – double glazing throughout • Walls 0.45 w/m²/°C - maximum • Roof - 0.45 w/m²/°C - maximum • Floor - 1.45 w/m²/°C - maximum

Values shall be no worse than those listed in current Building Regulations, i.e. in accordance with ASHRAE 9001 2004

6. Glazing Specification

Double glazed clear glass with low emissivity internal surface. Solar control performance to be confirmed.

7. Noise Criteria – Internal

Unless previously defined, the mechanical and electrical services systems shall be selected to ensure that when the office is fully fitted out with carpets and furniture the following maximum internal noise levels are achieved.

Internal open plan office - NC-35 Laboratores - NC-50

Internal noise levels as defined by IS0 R 1996, shall apply at a distance of 1.5m from any grille/diffuser (at an angle of 45°) or any wall surface.

* Target Conditions – No mechanical cooling of these rooms provided.



8. Noise Criteria - External

The mechanical services external plant shall be selected to allow operation at any time. Sound power levels shall be provided and agreed with the local planning authority prior to commencement of the works.

Noise criteria, where specified are to be measured 1.0m outside the nearest openable window.

9. System Operating Parameters • Office Supply Air 17°C Summer 20°C Winter

For electrical power, 208/3/60 or 120/1/60 will be provided for throughout the building for mechanical equipment as coordinated with electrical consultant.

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3.0 SUSTAINABLE DESIGN RECOMMENDATIONS

The following design features are recommended to be integrated between disciplines:

1. Building Envelope

The building envelope performance is critical to comfort, passive building operation and the efficiency of the mechanical systems. Increased insulation levels in the building envelope will reduce heating and cooling loads.

The following architectural and space requirements must be addressed to successfully implement a high performance building envelope.

• Thicker insulation for walls, roofs and exposed floors assemblies; and • Continuous insulation on the exterior side of the envelope to reduce thermal bridging.

2. South and West Elevation Solar Gain Control

The south and west elevations have two conflicting requirements: high window-to-wall ratios to maximize the view /passive heating and low window-to-wall ratios to limit summer solar heat gains and heat losses. These needs can both be met by high performance glazing in combination with exterior shading, either operable or fixed. The purpose of the shade is to block summer sun and admit low angle winter sun.

The following architectural space requirements must be addressed to successfully implement the south and west elevation solar control:

• Provide fixed external shading elements such as overhangs or fins on the south façades.

• Reduce glazing on the west side of the stairwell.


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4.0 ENVELOPE REQUIREMENTS

1. The envelope performance will be simulated using advance building energy modeling because it is a critical component of the low energy mechanical system. The simulations conducted will compare the design envelope performance with the benchmark case prescribed by ASHRAE Standard 90.1 to determine a working combination of glazing areas and assembly thermal properties.

2. In order to attain minimum 4 points from LEED E&A Credit 1, the building envelope for the building will be designed to meet the following performance:

• The maximum allowable ration of glazing vs. wall area for the overall entire building: 40/60% (estimated). This includes the floor slab sections in the exterior walls.

• The minimum U-value performance of the overall wall assembly (including the use of spandrel glass) must be a minimum R-15.

• The minimum U-value performance of the glazing shall be (U-0.29) which is equivalent to r-3.45 (R=1/U). This R-Value is rated center glass value. The overall window assembly including framing must be a minimum R-2.8.

3. Thermal Bridging: Thermal bridging occurs when uninsulated building elements conduct heat/cold to outdoors and bring hot/cold temperatures indoors through conduction. Typically thermal bridging occurs at external overhang, thermally unbroken window frames, curtain wall, structural ties, etc. Thermal comfort, energy efficiency and reducing the potential for condensation related problems can be improved by appropriate detailing to reduce thermal bridging.

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5.0 HVAC SYSTEM

5.1 Ventilation System

Two Options are presented for the ventilation system design:

Option 1

Option 1 utilizes one AHU to supply all ventilation air for the building. The unit will have a capacity of 13,000 CFM.

The roof top air handling unit will have a heat recovery system, filter section, gas fired burner section, S/A fan section, E/A fan section and variable speed drives for both fans. A heat recovery (heat pipe) system will be provided between the exhaust and supply air systems to reduce energy consumption. There will be supply air and exhaust air ductwork distribution throughout the building to the rooms. The room air temperature and humidity level of the wet labs will be controlled by VAV boxes as required to meet the humidistat and thermostat setpoints.

Concealed ceiling mounted indoor units associated with the VRF system will have ductwork distribution to ceiling supply air diffusers. This arrangement will provide zone temperature control to the second floor areas.

Option 2

With Option 2, the building will be split in two with ground floor AHU-1 rated at 10,500 CFM all features as Option1.

The second floor roof top air handling unit will be a dedicated outdoor air unit providing 100% fresh air (with no return) to the space with a gas fired burner section and DX cooling section, S/A fan section, and filter section. The VRF system is deleted in this option and cooling is provided centrally by the roof top unit with reheat for zone control.

5.2 Cooling System

The cooling for the building will be provided through two sources for the respective floors.

The first floor will not be air conditioned with the exception of the feed storage room, the electrical room and the main corridor. The multi-split VRF system will condition the electrical room and the main corridor; however, a separate split system will be used for the feed storage room. The feed storage room need is required to be 10°C and requires a cold room with the requirement for a stand alone cooling system, and insulated panel walls.

The ground floor will be supplied with 100% outdoor air only. As the space temperature is not critical, i.e. a normal range of 15°C to 25°C is acceptable. The following factors will allow the space temperature to be moderated:

1. The rooms all contain water tanks which are temperature controlled between 4°C and 15°C . These cool bodies of water will have a cooling effect on the room.

2. The aquatic laboratories have little if any windows and a lot of exposed concrete or concrete block walls. These surfaces will act as thermal mass and will reduce daily temperature swings. As the system operates 24 hours per day, in the summer months cool night air can be used to cool off the rooms and the ‘cool energy’ is stored in the walls.



3. The ventilation AHU serving the first floor is fitted with a heat pipe heat recovery unit. When the room air is cooler than the outside air energy recovery is possible and the incoming outdoor air can be cooled.

While these two factors will allow the rooms to stay within noted limits under most conditions with warm day and night time temperatures, room temperatures could at times begin to map outdoor temperatures.

For the second floor, the outdoor air supply is not conditioned. Unconditioned air is delivered to the space at the back of the VRF concealed ceiling mounted indoor units. Cooling will be provided from the VRF system through the refrigerant circuit. The refrigeration plant and circuit will use a zero ozone depletion potential refrigerant, e.g. R407c or R410a

Refrigerant circuit piping will distribute to serve concealed ceiling mounted indoor units on the first and second floors as indicated on the attached refrigeration schematic MSK-5.

5.3 Heating System

The heating for the building will provided through two sources for the respective floors.

The first floor heating will be delivered to the spaces through a forced air system generated by a gas fired burner in the roof top unit. A heat pipe will provide heat recovery for energy efficient operation. Final terminal heating will provide trimming of the temperature for each room by using an electric reheat coil at each VAV box.

Option 1a

Option 1a replaces the electric resistance heaters within the VAV boxes with hot water heating coils. The hot water heating coils are supplied with heating water from a wall hung Viessmann Vitodens condensing boiler. This system can also be used to generate the domestic hot water at a higher efficiency than conventional hot water heaters. This option has a number of pros and cons.

Advantages

• Reduces size of electrical required supply which is limited.

• High efficiency hot water generation.

• Uses natural gas as the heating source as opposed to direct electric heating. In general using electricity directly as a heating source is less sustainable than natural gas due to the inefficiencies in the electrical generating process in converting fossil fuels such as natural gas to electricity. In British Columbia most electrical power is provided by hydro electric and this argument has less merit. However, as the Provincial hydro electric generating capacity has been exceeded, all new power demand is typically been provided by thermal power plants. BC Hydro is actively discouraging electric heating.

• Lower cost of energy consumption.

• Can provide larger heat coil capacity providing more temperature set points flexibility in different rooms.

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Disadvantages

• Increased capital cost.

• More complicated system.

• Heating pipework located in aquatic rooms with potential for leaking chemical laden water into aquatic tanks.

• Increased maintenance and more maintenance items within aquatic areas.

• Customized control system.

Option 1b

Option 1b changes the ventilation heat recovery system to a heat pump assisted run around coil system. This system is available to recover heat from the exhaust air stream and use it to heat the VAV terminal reheat coils, heat the outside air and also heat/cool the aquatic systems. This option has a number of pros and cons:

Advantages

• Most energy efficient system. Takes all available heat from exhaust air and aquatic system cooling and uses it to heat the building.

• Can cool the incoming air to the building.

• Produces less greenhouse gas to heat than Option 1 or 1a.

• Can be used to heat and cool aquatic systems centrally and integrate this with building HVAC system.

• Reduces the number of aquatic heat pumps to be maintained.

Disadvantages

• Most expensive system.

• Most complicated in terms of hydronic piping.

• Most complicated in terms of controls.

• Piping located over aquatic tanks.

• Increased maintenance and more maintenance items within aquatic areas.

• Failure of a single heat pump results in loss of temperature control of aquatic systems.

• Faire of the air handling system results in loss of control of aquatic systems.

• Lowest chilled water temperature available is 5°C so coldest aquatic water temperature would be approximately 7°C to 8°C. Dedicated heat pumps could likely reduce this to 7°C to 8°C.

• Potential conflict between facilities maintenance team and aquatic user groups.



For the second floor, primary air is tempered and delivered to the space through the same gas fired force air system as the first floor. Terminal zone heating is provided by the concealed ceiling mounted indoor units through the VRF system.

Option 2

In lieu of the VRF system an alternate small gas fired, wall hung condensing boiler for a hydronic system to be provided for supplemental heating. A heating water loop will distribute hot water to the hot water coils in the VAV boxes. With this option DX cooling would be required in the make-up air unit to cool the laboratory which is not permitted to have operable windows. Individual DX split systems would be required for electrical, communication room, and lab equipment rooms.

5.4 Exhaust Air Systems

Washroom exhaust air will be extracted from the room through an inline cabinet fan and ceiling mounted exhaust grilles. Make up air will be from the building through acoustically lined transfer air boot and grilles. The discharge air from the fan will be to an exterior wall louver.

The building general exhaust air will serve both the first and second floors through the exhaust fan on the main rooftop air handling unit. Make up air will be from the building through acoustically lined transfer air boot and grilles. The discharge air from the fan will be through the top of the air handling unit ducted up above the roof level, to avoid recirculation of odors from the aquatic labs.

In ICSS Dry Lab and the CCH Diagnostic Lab, the fume hood exhausts will be ducted to a roof top centrifugal exhaust fan located on the lower roof. The activation of the fume hood fan will be via a line voltage switch mounted on the fume hood monitored by the DDC system. General exhaust to the room will ramp down via a VAV box to ensure proper airflow is maintained at all times in the lab. Make up air will be directly supplied to the room as well from the building through acoustically lined transfer air boot and grilles.

5.5 Stairwells/Ancillary Areas

To maintain stairwell temperatures in summer an exhaust fan will be provided at roof level complete with motorized make up louver or operable window at low level.

Staircases and other ancillary areas will be heated by electric heater. Temperature control will be provided by line voltage thermostats.

Option 1a: In lieu of electric heating, staircases and other ancillary areas will be heated by hot water fan convectors. Temperature control will be provided by thermostatic radiator valves.

5.6 Gas Services

A new gas service will be provided to the building.

A gas main will be provided from a meter on the south end of the building. Gas distribution will be in the building to roof mounted air handling units and mechanical room.

An automatic shut off valve will be provided at the gas meter which will isolate the incoming main under seismic conditions.

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Option1a: Gas service will be provided to the two rooftop air handling units as well as for a small wall hung gas fired boiler in the main floor mechanical room.

5.7 Control System

A dedicated DDC control system shall be provided to match and tie into the control systems already used on the campus, either Johnson Controls or Reliable Controls.

The operation and control of the mechanical systems will be achieved by means of an automatic DDC software control system. The equipment control will comprise of a number of remote field control devices housed in a section of the mechanical room motor control panel.

The panel will be provided with a facia mounted key pad to allow monitoring and control of the mechanical equipment.

The DDC system shall be able to interface with the mechanical equipment manufacturer’s controller, it will provide monitoring and control of each mechanical equipment.

Local controllers will be provided to each floor level, for individual internal control.

Hydronic Heating Option: Provide water side controls. Heating demand will be sensed by wall or column mounted sensors with user adjustable set point facilities. The sensor will control heating control valves on each terminal heating unit via a DDC controller. Each controller will have facility for set point adjustment via a hand held commissioning device.

A controls communication loop will be provided between the controllers on each floor back to the riser suitably terminated to allow the units on that floor to be interrogated from any fan coil unit or at the riser.

Fan speed control, comprising 3 speeds and off will be provided on each fan coil unit, the FCU’s will be designed to operate at medium speed.



6.0 PLUMBING

6.1 Cold Water Mains

A new 6” (150mm) combined water service main will be provided from the campus main on the road. It will be sized to suit the current and future water demand. A new meter will be provided at Ground Floor level water entry room.

6.2 Cold Water Service

A new potable water distribution system will be provided throughout the building. Water service will be provided for all plumbing fixtures. A cap-off will be provided for the future extension.

All piping mains shall exclude all copper and galvanized materials as they are toxic to fish. Where possible all mains and run-outs to lab and rooms to be Wirsbo Aquapex or approved plastic piping for potable water systems.

6.3 Hot Water Service

A gas fired hot water tank located in the main floor mechanical room will provide hot water service for the building. A new potable water distribution system will be provided throughout the building. Water service will be provided for all plumbing fixtures.

The domestic hot water system will consist of one gas fired hot water heater located in the main floor mechanical room. A domestic hot water re-circulating pump will be provided with the domestic hot water main distribution piping in the corridor.

Piping mains in corridor to be copper material while run-outs to lab and rooms to be Wirsbo Aquapex or approved plastic piping for potable water system.

6.4 Rainwater Disposal

The roof areas will be drained by a conventional system of roof outlets and rainwater pipes being collected together to discharge into the underslab drainage. Rainwater pipework and outlets will be provided to suit the roof areas.

Rainwater pipes will be insulated to prevent against condensation where the pipes run above occupied areas.

6.5 Sanitary Drainage System

A system of above ground and below grade drainage will be provided from all plumbing drainage fixtures.

The system will be vented to roof level and discharge down to connect to the below ground drainage system.

Vertical stacks and branch piping will be cast iron material.

6" wide heavy duty polymer concrete trench drain system with polymer covers will be provided for Fish Culture Area, Larval Culture, Small Research Labs, and Large Research Lab. Floors drain will be provided for all other wet labs and connected to the sanitary system.

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6.6 Grey Water Drainage System

The aquatic systems will discharge a continuous waste water stream of between 40 &100 l/s. Provision will be made to collect this water for possible use in a grey water reuse system. A separate grey water collection system will be routed from dedicated floor drains adjacent to the aquatic filtration system. The drains will be routed to the outside of the building via the mechanical room where a sump will be located. At Day 1 when there is no intended use for the water the sump will act as a pass through sump. The sump will allow for future installation of sump pumps to redirect this flow to a treatment/collection and distribution system to solve toilet flushing and irrigation systems in other new buildings on campus.

At the flows quoted, the water quantity has the potential to flush 9,600 six litre toilets per day or 3.5 million per year. Rising to 24,000 flushes per day or 8.7 million flushes per year at the higher flow quoted. This has the potential to save the university $2,300 to $5,700 per annum at a rate of $0.65 per 1,000 litres.

6.7 Plumbing and Drainage Distribution

Premise isolation, with a 4” (100mm) RPBA, will be required on the potable domestic water feed to the building.

The potable domestic cold and hot water main distribution will be from the first floor ceiling and will be primarily located in the corridor ceilings. It will be an up feed and down feed system to the plumbing fixtures on the respective floors. Shut-off valves will be on each branch run-out allowing for partial system shut down without disrupting the entire building operation.

A 4” (100mm) water service complete with a 4” (100mm) RPBA will be provided for the aeration tower. The aeration tower will provide gravity feed dechlorinated water system to the lab spaces with tanks such as Fish Culture Area, Larval Culture, Small Research Lab, Large Research Lab, Feed Prep, Incubation Room, and Swim Tunnel.

Run-outs to each lab from the non-potable system will be provided to prevent cross contamination between individual labs and building potable water system.

Potable chlorinated water to hose bibbs will be provided for washdown and cleaning for areas such as Fish Culture Area, Larval Culture, Small Research Lab, Large Research Lab, and Incubation Room.

The building sanitary drainage system will consist of multiple risers to minimize the amount of horizontal drain pipes in the first floor ceiling. A buried sanitary cap-off will be provided at the future extension. The 6” sanitary main will leave the building below grade at the south-east side of the property and tie into the campus main on the road.

Conventional PVC drainage systems which are acid resistant drains will be provided at fume hoods and lab. Acid neutralizers are not anticipated as the University has a policy of no chemical discharge to drainage systems.

The building roof drains will be collected vertically and grouped together below grade. A buried storm cap-off will be provided at the future extension. The 6” storm main will leave the building below grade at the south-east side of the property and tie into the campus main on the road.

All plumbing fixtures are to be low flow type for water conservation. All plumbing fixtures in barrier free accessible areas are to comply with barrier free guidelines. Water closets will have a dual flush option and urinals will be waterless for addition water conservation.



Emergency eye wash and drench shower will be provided in the corridor at each floor level. On Level 2, swing out eye washes will be provided at the sinks in the Dry Lab and the CCH Diagnostic Lab.

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7.0 FIRE PROTECTION

7.1 Sprinkler System

The building will be fully sprinklered with provision for the future extension. A sprinkler main cap-off will be provided adjacent to the future extension to minimize the disruption to the building operation in the future. Pending review of the water main flow and pressure information, it is assumed there is adequate flow and pressure in the campus water mains to operate the sprinkler system.

The sprinkler system will be risers serving sub-divided floor areas zoning in a grid pattern. The floor distribution piping for each sprinkler zone will be provided with a looped main to enable flexibility of modifying and increasing area of zone coverage and provide the ability to adapt to increases in program area changes.

All sprinkler heads will be quick response type throughout with cages on heads in aquatic spaces to prevent accidental discharge.

Fire extinguishers will be provided throughout the building in accordance with the building code.



8.0 DRAWING REGISTER/DELIVERABLE

8.1 DELIVERABLES

In addition to this Design Brief, the following documents will be included as part of the Schematic Design Report submission.

1. Drawing List

Dwg No. Title

MSK-01 Option 1, 1a and 1b - Main Floor – HVAC MSK-01 Option 2 - Main Floor – HVAC

MSK-02 Option 1, 1a and 1b – Second Floor – HVAC MSK-02 Option 2 – Second Floor – HVAC

MSK-03 Option 1 and 1a – Main Floor – Plumbing MSK-03 Foundation – Foundation – Plumbing

MKS-04 Second Floor – Plumbing

MSK-05 Option 1 – VRF Refrigerant Schematic

MSK-06 Option 1a and 1b – Alternate Options – Hydronic System Schematic

2. Appendix A – Mechanical Equipment Schedule.

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9.0 Closure

We trust that the foregoing provides the information required at this time. Should you have any questions or require additional information, please do not hesitate to contact the undersigned.

Report Prepared By:

COBALT ENGINEERING

Stuart Hood, P.Eng. C.Eng Wilkin Tan Partner Designer

SH/WT/gmm H:\Projects\08-6304-000 Malaspina_International_Centre_for_Sturgeon_Studies\Documents\F_Reports_Schedules\081017_VIU Mechanical_Schematic_Design_Brief.doc

APPENDIX A

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14. MechanicalAPPENDIX A

MECHANICAL EQUIPMENT LIST ________________________________________________________________________________

Cobalt Engineering Page 1

MECHANICAL EQUIPMENT LIST

Option 1 – AHU Serving All Rooms

Gas fired roof top unit with heat pipe for heat recovery, O/A motorized damper, disposable filter (FARR 30/30), Merv 13, 12” deep final filter, S/A Fan 13,000 CFM, Exhaust Fan 10,000 CFM, variable speed drives and seismic roof curb. All fan motors to be 20 HP at 1.0” ESP, 208/3. Unit weight including curb 7,000 lbs.

Option 2 - AHU-1 (Serving First Floor)

Gas fired roof top unit with heat pipe for heat recovery, O/A motorized damper, disposable filter (FARR 30/30), Merv 13, 12” deep final filter, S/A Fan 10,500 CFM, Exhaust Fan 10,500 CFM, variable speed drives and seismic roof curb. All fan motors to be 15 HP at 1.0” ESP, 208/3. Unit weight including curb 6,000 lbs.

Option 2 - AHU-2 (Serving 2nd

Floor, 100% O/A)

Gas fired roof top unit with O/A motorized damper, disposable pre-filter (FARR 30/30) & Merv 13, 12” deep final filter, S/A fan 2,500 CFM, and seismic roof curb. Fan motor to be 2.5 HP at 1.0” ESP 208/3. Unit weight including curb 2,500 lbs.

EF-1 (Fume Hood based on 1800mm wide hood)

Centrifugal backward incline utility fan, epoxy coated, belt drive, 800 CFM at 1.5” ESP, ½ HP, 208/3 motor, base mounted spring isolators, belt guard, weather proof shroud, and disconnect switch.

EF-2 (Serving 2nd

Floor W/R Exhaust)

In-line exhaust fan suspended in ceiling, 600 CFM at 0.5” ESP, ¼ HP, 120/1 motor, back draft damper, and disconnect switch.

Option 2 Only - EF-3 (Serving 2nd

Floor Diagnostic Lab)

In-line exhaust fan suspended in ceiling, 800 CFM at 0.5” ESP, ½” HP, 208/3 motor, back draft damper, and disconnect switch.

HPVRF-1 (Air Source Heat Pump )

Variable refrigerant flow air source heat pump with heat recovery, 234, 000 btu/h, 208/3 motor, BC controller capable of controlling 9 units for heat exchange and recovery

Tag: HPVRF-1 Type: Outdoor Heat Pump Manufacturer: Mitsubishi Model: PURY-P234TGMU-A Location: Roof

Tag: BC-1 Type: BC Controller Manufacturer: Mitsubishi Model: CMB-P1010NU-GA Location: Mechanical Room

APPENDIX A MECHANICAL EQUIPMENT LIST

________________________________________________________________________________


Indoor Fan Coil Units

Tag: FC-1 Type: 4 Way Ceiling Cassette Manufacturer: Mitsubishi Model: PLFY – P18NAMU-E Serving: Project Room

Tag: FC-2 Capacity: 18, 000 btu/h Type: 4 Way Ceiling Cassette Manufacturer: Mitsubishi Model: PLFY – P18NAMU-E Serving: Resource Room

Tag: FC-3 Capacity: 12, 000 btu/h Type: 4 Way Ceiling Cassette Manufacturer: Mitsubishi Model: PLFY – P12NCMU-E Serving: Diagnostic Lab

Tag: FC-4 Capacity: 12, 000 btu/h Type: 4 Way Ceiling Cassette Manufacturer: Mitsubishi Model: PLFY – P12NCMU-E Serving: Data and Sample

Tag: FC-5 Capacity: 18, 000 btu/h Type: 4 Way Ceiling Cassette Manufacturer: Mitsubishi Model: PLFY – P18NAMU-E Serving: ICSS Dry Lab – Equipment Area

Tag: FC-6 Capacity: 36, 000 btu/h Type: Concealed Ceiling Mounted Manufacturer: Mitsubishi Model: PEFY-P36NMHU-E Serving: ICSS Dry Lab

Tag: FC-7 Capacity: 30, 000 btu/h Type: Concealed Ceiling Mounted Manufacturer: Mitsubishi Model: PEFY-P30NMHU-E Serving: Offices / CCH Lab

Tag: FC-8 Capacity: 24, 000 btu/h Type: Wall Mounted Type Manufacturer: Mitsubishi Model: PKFY-P24NFMU-E

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14. MechanicalAPPENDIX A

MECHANICAL EQUIPMENT LIST ________________________________________________________________________________


Serving: Comm Room

Tag: FC-9 Capacity: 24, 000 btu/h Type: Wall Mounted Type Manufacturer: Mitsubishi Model: PKFY-P24NFMU-E Serving: Electrical Room

Tag: FC-10 Capacity: 30, 000 btu/h Type: 4 Way Ceiling Cassette Manufacturer: Mitsubishi Model: PLFY – P30NCMU-E Serving: Feed Storage Room

Option 2: Fan Power VAV Boxes (Serving 2nd

Floor)

2 pipe heating water to VAV box reheat coils (for labs or fan powered VAV boxes offices) unit suspended in ceiling, ¼ HP, 120/1 Motor.

DHWT-1 (on 2nd

Floor)

Rheem G1209-180 gas fired hot water tank with 120 USGal tank capacity, 180 MBH input, 228 USGal per hour hot water delivery.

Option 1a

Viessmann Vitoders 60KW Condensing Boiler. Viessmann 120 US gal Stainless Steel Hot Water Tank c/w immersion type hydronic heating coil. Grundfoss Circulating Pumps for heating system and domestic hot water heating loop.

Option 1b

Water Furnace 2@15 ton/R410a geothermal range water to water heat pump. Grundfoss Circulating Pumps 4 @ 2.0 l/s @ 150 kPa.