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Draft 1 Apri l , 19, 2013

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LEVEL OF

DEVELOPMENT

SPECIFICATION


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ModelDevelopment

Specification

Version: DRAFT 2013Version: DRAFT 2013


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Level of DevelopmentSpecificationVersion: DRAFT 2013

www.bimforum.org/lod

2

Contents Level of Development (LOD) Specification Introduction .............................................................................................. 7

A – SUBSTRUCTURE ................................................................................................................................................... 12

A10 – Foundations ..................................................................................................................................................... 12A1010 – Standard Foundations .......................... ........................... ........................... ........................... .................... 12

A1020 – Special Foundations ......................... ........................... ........................... ........................... ........................ 14

A20 – Subgrade Enclosures ....................................................................................................................................... 15

A2010 – Walls for Subgrade Enclosures ................................... ........................... ........................... ........................ 16

A40 – Slabs-on-Grade ................................................................................................................................................ 16

A4010 – Standard Slabs-on-Grade .......................... ........................... ........................... .......................... ................ 17

A4020 – Structural Slabs-on-Grade ......................... ........................... ........................... .......................... ................ 17

B – SHELL .................................................................................................................................................................... 18

B10 – Superstructure ....................... ........................... ........................... ........................... .......................... ................ 18

B1010 – Floor Construction ........................ .......................... ........................... ........................... ........................... .. 18

B20 – Exterior Vertical Enclosures ......................... ........................... ........................... ........................... .................... 30

B2010 – Exterior Walls .......................... ........................... ........................... ........................... .......................... ....... 30

B2020 – Exterior Windows ...................................................................................................................................... 33

B2050 – Exterior Doors and Grilles ............................................... ........................... ........................... .................... 34

B2070 - Exterior Louvers and Vents ........................ ........................... ........................... .......................... ................ 36

B2080 - Exterior Wall Appurtenances .......................... ........................... ........................... ........................... ........... 36

B2090 – Exterior Wall Specialties ....................... ........................... ........................... ........................... .................... 37

B30 – Exterior Horizontal Enclosures .......................... ........................... ........................... .......................... ................ 37

B3010 – Roofing ..................................................................................................................................................... 37

B3020 – Roof Appurtenances.................................................................................................................................. 38

B3040 – Traffic Bearing Horizontal Enclosures .......................... ........................... .......................... ......................... 39

B3060 – Horizontal Openings ......................... ........................... ........................... ........................... ........................ 39

B3080 – Overhead Exterior Enclosures ....................... ........................... ........................... ........................... ........... 40

C – INTERIORS ............................................................................................................................................................. 41

C10 – Interior Construction ....................... ........................... ........................... ........................... .......................... ....... 41

C1010 – Interior Partitions .......................... .......................... ........................... ........................... ........................... .. 41

C1020 – Interior Windows ....................................................................................................................................... 44

C1030 – Interior Doors ............................................................................................................................................ 45C1040 – Interior Grilles and Gates ................................................ ........................... ........................... .................... 48

C1060 – Raised Floor Construction ......................... ........................... ........................... .......................... ................ 49

C1070 – Suspended Ceiling Construction ................................. ........................... .......................... ......................... 49

C1090 – Interior Specialties .................................................................................................................................... 51

C20 – Interior Finishes .......................... .......................... ........................... ........................... ........................... ........... 55

C2010 – Wall Finishes ............................................................................................................................................ 56

C2020 – Interior Fabrications ......................... ........................... ........................... ........................... ........................ 57


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C2030 – Flooring .................................................................................................................................................... 57

C2040 – Stair Finishes .......................... ........................... ........................... ........................... .......................... ....... 59

C2050 – Ceiling Finishes ........................................................................................................................................ 60

C2090 – Interior Finish Schedules ........................... ........................... ........................... .......................... ................ 61

D – SERVICES .............................................................................................................................................................. 62

D10 – Conveying ........................................................................................................................................................ 62

D1010 – Vertical Conveying Systems .......................... ........................... ........................... ........................... ........... 62

D1030 – Horizontal Conveying ....................... ........................... ........................... .......................... ......................... 63

D1050 – Material Handling ......................... .......................... ........................... ........................... ........................... .. 63

D1080 – Operable Access Systems .............................................. ........................... ........................... .................... 65

D20 – Plumbing .......................................................................................................................................................... 66

D2010 – Domestic Water Distribution .......................... ........................... ........................... ........................... ........... 66

D2020 – Sanitary Drainage ..................................................................................................................................... 70

D2030 – Building Support Plumbing Systems ....................... ........................... ........................... ........................... .. 74

D2050 – General Service Compressed-Air ....................... ........................... ........................... .......................... ....... 78

D2060 – Process Support Plumbing Systems ....................... ........................... ........................... ........................... .. 78

D30 – HVAC ............................................................................................................................................................... 81

D3010 – Facility Fuel Systems ....................... ........................... ........................... ........................... ........................ 81

D3020 – Heating Systems .......................... .......................... ........................... ........................... ........................... .. 85

D3030 – Cooling Systems .......................... .......................... ........................... ........................... ........................... .. 88

D3050 – Facility HVAC Distribution Systems ........................ ........................... ........................... ........................... .. 92

D3060 – Ventilation ........................... .......................... ........................... ........................... ........................... ........... 95

D3070 – Special Purpose HVAC Systems ........................ ........................... ........................... .......................... ....... 99D40 – Fire Protection ....................... ........................... ........................... ........................... .......................... ............... 100

D4010 – Fire Suppression .......................... .......................... ........................... ........................... ........................... . 100

D4030 – Fire Protection Specialties ......................... ........................... ........................... .......................... ............... 102

D50 – Electrical ........................... .......................... ........................... ........................... ........................... ................... 104

D5020 – Electrical Service and Distribution ............................................ ........................... ........................... .......... 109

D5030 – General Purpose Electrical Power .......................... ........................... ........................... ........................... . 114

D5040 – Lighting .......................... ........................... ........................... ........................... .......................... ............... 115

D5080 – Miscellaneous Electrical Systems ....................... ........................... ........................... .......................... ...... 118

D60 – Communications ..................................... ........................... ........................... ........................... ....................... 121

D6010 – Data Communications .......................... ........................... ........................... ........................... ................... 121

D6020 – Voice Communications ................................. ........................... ........................... ........................... .......... 121

D6030 – Audio-Video Communication ................................................ ........................... .......................... ............... 121

D6060 – Distributed Communications and Monitoring ......................... ........................... .......................... ............... 121

D6090 – Communications Supplementary Components ..................... ........................... .......................... ............... 121

D70 – Electronic Safety and Security .......................... ........................... ........................... .......................... ............... 121

D7010 – Access Control and Intrusion Detection ........................... ........................... ........................... ................... 121

D7030 – Electronic Surveillance ......................... ........................... ........................... ........................... ................... 121


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D7050 – Detection and Alarm......................... ........................... ........................... .......................... ........................ 121

D7070 – Electronic Monitoring and Control ....................... ........................... ........................... .......................... ...... 121

D7090 – Electronic Safety and Security Supplementary Components ....................... ........................... ................... 121

D80 – Integrated Automation ...................................... ........................... ........................... .......................... ............... 121

D8010 – Integrated Automation Facility Controls ............................................. ........................... ........................... . 121

E – EQUIPMENT & FURNISHINGS .......................... ........................... ........................... ........................... ................... 122

E10 – Equipment ......................... .......................... ........................... ........................... ........................... ................... 122

E1010 – Vehicle and Pedestrian Equipment ......................... ........................... ........................... ........................... . 122

E1030 – Commercial Equipment ........................ ........................... ........................... ........................... ................... 122

E1040 – Institutional Equipment ................................................ ........................... ........................... ....................... 124

E1060 – Residential Equipment ......................... ........................... ........................... ........................... ................... 125

E1070 – Entertainment and Recreational Equipment .......................... ........................... .......................... ............... 125

E1090 – Other Equipment .......................... .......................... ........................... ........................... ........................... . 126

E20 – Furnishings ........................ .......................... ........................... ........................... ........................... ................... 127

E2010 – Fixed Furnishings ......................... .......................... ........................... ........................... ........................... . 127

E2050 – Movable Furnishings ........................ ........................... ........................... .......................... ........................ 128

F – SPECIAL CONSTRUCTION & DEMOLITION ....................... ........................... ........................... ........................... . 129

F10 – Special Construction ....................... ........................... ........................... ........................... .......................... ...... 129

F1010 – Integrated Construction ............................. ........................... ........................... .......................... ............... 129

F1020 – Special Structures ........................ .......................... ........................... ........................... ........................... . 129

F1030 – Special Function Construction ................................ ........................... ........................... ........................... . 129

F1050 – Special Facility Components .......................... ........................... ........................... ........................... .......... 129

F1060 – Athletic and Recreational Special Construction ......................... ........................... ........................... .......... 129F1080 – Special Instrumentation ............................................... ........................... .......................... ........................ 129

F20 – Facility Remediation ................... .......................... ........................... ........................... ........................... .......... 129

F2010 – Hazardous Materials Remediation .......................... ........................... ........................... ........................... . 129

F30 – Demolition ............................................... ........................... ........................... .......................... ........................ 129

F3010 – Structure Demolition ......................... ........................... ........................... .......................... ........................ 129

F3030 – Selective Demolition ......................... ........................... ........................... .......................... ........................ 129

F3050 – Structure Moving .......................... .......................... ........................... ........................... ........................... . 129

G – BUILDING SITEWORK .......................................................................................................................................... 130

G10 – Site Preparation ............................................... ........................... ........................... .......................... ............... 130

G1010 – Site Clearing ................................................ ........................... ........................... .......................... ............... 130

G1020 – Site Elements Demolition .......................... ........................... ........................... .......................... ............... 130

G1030 – Site Element Relocations .......................... ........................... ........................... .......................... ............... 130

G1050 – Site Remediation ............................. ........................... ........................... .......................... ........................ 130

G1070 – Site Earthwork ........................ ........................... ........................... ........................... .......................... ...... 130

G20 – Site Improvements ......................... ........................... ........................... ........................... .......................... ...... 131

G2010 – Roadways ........................... .......................... ........................... ........................... ........................... .......... 131


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G2020 – Parking Lots ........................................ ........................... ........................... ........................... ................... 131

G2030 – Pedestrian Plazas and Walkways ...................... ........................... ........................... .......................... ...... 131

G2040 – Airfields ...................................... ........................... ........................... ........................... ........................... . 131

G2050 – Athletic, Recreational, and Playfield Areas ........................................ ........................... ........................... . 131

G2060 – Site Development ............................ ........................... ........................... ........................... ....................... 131

G2080 – Landscaping ................................................. ........................... ........................... ........................... .......... 131

G30 – Liquid and Gas Site Utilities ......................... ........................... ........................... ........................... ................... 131

G3010 – Water Utilities .................................. ........................... ........................... ........................... ....................... 131

G3020 – Sanitary Sewerage Utilities ................................ ........................... ........................... .......................... ...... 131

G3030 – Storm Drainage Utilities ..................................... ........................... ........................... .......................... ...... 131

G3050 – Site Energy Distribution ....................... ........................... ........................... ........................... ................... 131

G3060 – Site Fuel Distribution ........................ ........................... ........................... ........................... ....................... 131

G3090 – Liquid and Gas Site Utilities Supplementary Components ...................... .......................... ........................ 131

G40 – Electrical Site Improvements ....................... ........................... ........................... ........................... ................... 132

G4010 – Site Electric Distribution Systems ....................... ........................... ........................... .......................... ...... 133

G4050 – Site Lighting ........................ .......................... ........................... ........................... ........................... .......... 134

G5010 – Site Communications Systems ........................... ........................... ........................... .......................... ...... 135

G9010 – Tunnels ....................................... .......................... ........................... ........................... ........................... . 136

APPENDIX ................................................................................................................................................................... 137


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6

Acknowledgements

Thanks to all individuals and organizations who reviewed and contributed to this work, and to the following industryassociation representatives and co-chairs of the major discipline subgroups who made this document possible:

Overall co-chairs

Jan Reinhardt, AIA, PE, Adept Project Delivery

Jim Bedrick, FAIA, AEC Process Engineering

Domain-Specific Content

Design Construction

Structures Will Ikerd, Ikerd Consulting David Merrifield, Alpha Steel

Exterior Skin James Vandezande, HOK Walt Cichonski, L F Driscoll

Interior Construction Ron Dellaria, RA, CSI, Astorino Brian Filkins, Mortenson

Building Services Murat Karakas, Arup David Francis, Southland

Aaron Lawson, Gould Electric

Industry association representatives

Dmitri Alferieff, Associated General Contractors

Michael Bomba, Esq., American Institute of Architects

Overall editing

Marisa Gerdano, Associated General Contractors

Nothing contained in this work shall be considered to be the rendering of legal advice for specific cases, and readers areresponsible for obtaining such advice from their own legal counsel. This work and any forms herein are intended solely foreducational and informational purposes.

Qualifications Based Selection of Contractors © 2013 by BIMForum.

No portions of this work may be reproduced or displayed without the express written permission of the copyright holders. Allrights reserved.


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Level of Development (LOD) Specification Introduction

1 Overview

The Level of Development (LOD)1 Specification is a reference that enables practitioners in the AEC Industry to specify

and articulate with a high level of clarity the content and reliability of Building Information Models (BIMs) at various stagesin the design and construction process. The LOD Specification utilizes the basic LOD definitions developed by the AIA forthe AIA G202-2013 Building Information Modeling Protocol Form

2 and is organized by CSI Uniformat 2010

3. It defines

and illustrates characteristics of model elements of different building systems at different Levels of Development. Thisclear articulation allows model authors to define what their models can be relied on for, and allows downstream users toclearly understand the usability and the limitations of models they are receiving.

The intent of the Specification is to help explain the LOD framework and standardize its use so that it becomes moreuseful as a communication tool. It does not prescribe what Levels of Development are to be reached at what point in aproject but leaves the specification of the model progression to the user of this document. To accomplish the document’sintent, its primary objectives are:

• To help teams, including owners, to specify BIM deliverables and to get a clear picture of what will be included ina BIM deliverable

• To help design managers explain to their teams the information and detail that needs to be provided at variouspoints in the design process

• To provide a standard that can be referenced by contracts and BIM execution plans.

2 Background

The BIMForum initiated the development of this LOD Specification and formed a working group comprising contributorsfrom both the design and construction sides of the major disciplines. The working group first interpreted the AIA’s basicLOD definitions for each building system, and then compiled examples to illustrate the interpretations. Because BIM isbeing put to an ever increasing number of uses, the group decided that it was beyond the initial scope to address all ofthem. Instead, the specifications were developed to address model element geometry, with three of the most commonuses in mind – quantity take-off, 3D coordination and 3D control and planning. The group felt that in taking this approachthe interpretations would be complete enough to support other uses.

3 Levels of Development

2 AIA Contract Document G202-2013, Building Information Modeling Protocol Form is part of a new series of

digital practice documents the AIA will be publishing in in conjunction with the AIA National Convention in June2013. For general information on the documents and downloadable drafts that were published in August 2012 aspart of a public comment period see www.aia.org/digitaldocs. Once the final documents are released, sampleswill be available for download through the same site.3 UniFormatTM Numbers and Titles used in this publication are from UniFormat

TM, published by CSI and

Construction Specifications Canada (CSC), and are used with permission from CSI. For a more in-depthexplanation of UniFormat

TM and its use in the construction industry visit www.csinet.org or contact CSI,110 South

Union Street, Suite 100, Alexandria, VA 22314. (800)-689-2900.


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The Level of Development (LOD) framework addresses several issues that arise when a BIM is used as a communicationor collaboration tool, i.e., when someone other than the author extracts information from it:

• During the design process, building systems and components progress from a vague conceptual idea to a precisedescription. In the past there has been no simple way to designate where a model element is along this path.

The author knows, but others often don’t.

• It’s easy to misinterpret the precision at which an element is modeled. Hand drawings range from pen strokes ona napkin to hard lines with dimensions called out, and it’s easy to infer the precision of the drawing from itsappearance. In a model though, a generic component placed approximately can look exactly the same as aspecific component located precisely, so we need something besides appearance to tell the difference.

• It is possible to infer information from a BIM that the author doesn’t intend – unstated dimensions can bemeasured with precision, assembly information often exists before it’s been finalized, etc. In the past, this issuehas been sidestepped with all-encompassing disclaimers that basically say, “Since some of the information in themodel is unreliable, you may not rely on any of it.” The LOD framework allows the author to clearly state thereliability of given model elements, so the concept becomes “Since some of the information in the model isunreliable, you may only rely on it for what I specifically say you can.”

• In a collaborative environment, where people other than the model author are depending on information from themodel in order to move their own work forward, the design work plan takes on high importance – it is necessaryfor the model users to know when information will be available in order to plan their work. The LOD frameworkfacilitates this.

The LOD Framework addresses these issues by providing an industry-developed standard to describe the state ofdevelopment of various systems within a BIM. This standard enables consistency in communication and execution byfacilitating the detailed definition of BIM milestones and deliverables.

3.1 Level of Development vs. Level of DetailThis Specification uses the concept of Levels of Development rather than Levels of Detail . There are important

differences.Level of Detail is essentially how much detail is included in the model element. Level of Development is the degree towhich the element’s geometry and attached information has been thought through – the degree to which project teammembers may rely on the information when using the model. In essence, Level of Detail can be thought of as input to theelement, while Level of Development is reliable output.

4 LOD Definitions

In 2008, the AIA developed its first set of Level of Development definitions in AIA Document E202 ™

-2008 BuildingInformation Modeling Protocol . Due to the rapidly evolving nature of the use of BIM, the AIA evaluated the AIA E202– 2008, including the LOD definitions. The result is the updated and reconfigured Digital Practice documents, AIA E203™– 2013, Building Information Modeling and Digital Data Exhibit, AIA G201™–2013, Project Digital Data Protocol Form, andAIA G202™–2013, Project Building Information Modeling Protocol Form, which are accompanied by a detailed guidedocument entitled Guide and Instructions to the AIA Digital Practice Documents . The AIA’s updated Digital Practicedocuments include revised LOD definitions.

To help further the standardization and consistent use of the LOD concept, and to increase its usefulness as a foundationfor collaboration, the AIA agreed to allow the BIMForum to utilize its latest LOD definitions in this Specification. The LODdefinitions that are used in this catalog are identical to those to be published in the AIA’s updated Digital PracticeDocuments, with two exceptions.


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First, the working group identified the need for an LOD that would define model elements sufficiently developed tofacilitate coordination between disciplines – e.g. clash detection/avoidance, layout, etc. The requirements for this levelare higher than those for 300, but not as high as those for 400. Thus it was designated LOD 350. The AIA documents donot include LOD 350, but the associated Guide and Instructions references it.

Second, while LOD 500 is included in the AIA’s LOD definitions, the working group did not feel it was necessary to furtherdefine and illustrate LOD 500 in this Specification because it relates to field verification. Accordingly the expandeddescriptions and graphical illustrations in this Specification are limited to LOD 100-400.

Fundamental LOD Definitions

• LOD 100 The Model Element may be graphically represented in the Model with a symbol or other genericrepresentation, but does not satisfy the requirements for LOD 200. Information related to the Model Element (i.e.cost per square foot, tonnage of HVAC, etc.) can be derived from other Model Elements.

• LOD 200 The Model Element is graphically represented within the Model as a generic system, object, orassembly with approximate quantities, size, shape, location, and orientation. Non-graphic information may also beattached to the Model Element.

• LOD 300 The Model Element is graphically represented within the Model as a specific system, object orassembly in terms of quantity, size, shape, location, and orientation. Non-graphic information may also beattached to the Model Element.

• LOD 350 The Model Element is graphically represented within the Model as a specific system, object, orassembly in terms of quantity, size, shape, orientation, and interfaces with other building systems. Non-graphicinformation may also be attached to the Model Element.

• LOD 400 The Model Element is graphically represented within the Model as a specific system, object orassembly in terms of size, shape, location, quantity, and orientation with detailing, fabrication, assembly, andinstallation information. Non-graphic information may also be attached to the Model Element.

• LOD 500 The Model Element is a field verified representation in terms of size, shape, location, quantity,and orientation. Non-graphic information may also be attached to the Model Elements.

Example – light fixture:

• 100 cost/sf attached to floor slabs

• 200 light fixture, generic/approximate size/shape/location

• 300 2x4 troffer, specific size/shape/location

• 350 Lightolier DPA2G12LS232, specific size/shape/location

• 400 As 350, plus special mounting details, as in a decorative soffit

Glossary

The expanded definitions use the following interpretations of these terms:

• Specific: The quantity, size, shape, location, and orientation of the element as designed can be measured directly

from the model without referring to non-modeled information such as notes or dimension call-outs.• Actual: The model element includes all the qualities of a specific element and is representative of the

manufacturer-specific model to be installed or the construction intent of an assembly.

Order of Precedence

4 The definitions for LOD 100, 200, 300, 400, and 500 included in this Specification represent the updated

language that appears in the AIA’s most recent BIM protocol document, G202–2013, Building InformationModeling Protocol Form. The LOD 100, 200, 300, 400 and 500 definitions are produced by the AIA and havebeen used by permission. Copyright © 2013. The American Institute of Architects. All rights reserved. LOD 350was developed by the BIMForum working group. Copyright © 2013. The BIMForum and the American Institute ofArchitects. All rights reserved.


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The body of this Specification expands on these fundamental definitions as they apply to specific building systems andsub-systems. In the event of any conflict, more specific expansions take precedence over less specific expansions andfundamental definitions, e.g. the expanded definitions for C1010 take precedence over those for C10, which in turn takeprecedence over the fundamental definitions.

Model Element Author

This document does not prescribe who the author of a particular component at a certain LOD should be – the sequence ofresponsibility for modeling various systems will vary from one project to another. To accommodate for this variation thisdocument defers to the concept of Model Element Author (MEA) as defined in the AIA E203-2013: “The Model ElementAuthor is the entity (or individual) responsible for managing and coordinating the development of a specific Model Elementto the LOD required for an identified Project milestone, regardless of who is responsible for providing the content in theModel Element."

5

4.1 LOD Definitions ExplainedLOD 100, then, corresponds to a conceptual level. For example, in a massing model the interior walls may not yet bemodeled, but we can use the approximate floor area to generate an area-based interior construction cost. Thus the wallsare at LOD 100 – they’re not modeled, but information about them can be obtained from elements that are modeled (the

floors) coupled with other information (area-based cost tables).To continue with the wall example, a floor plan is often first laid out using generic walls. The walls can now be measureddirectly, but the specific wall assemblies aren’t known and the quantity, thickness, and location measurements areapproximate. The walls are now at LOD 200. To step back to the massing model, if generic exterior walls are modeledand can be measured directly, they are actually at LOD 200, even though there is little detail.

At LOD 300 the wall element is modeled as a specific composite assembly, with information about its framing, wallboard,insulation if any, etc. The element is modeled at the thickness of the specified assembly, and is located accurately withinthe model. Non-geometric information such as fire rating may also be attached as well. This means that it’s notnecessary to model every component of the wall assembly – a solid model element with accurate thickness and locationand with the information usually included in a wall type definition satisfies the requirements of LOD 300.

At LOD 350 enough detail for installation and cross-trade coordination is included. For the wall example, this wouldinclude such things as blocking, king studs, seismic bracing, etc.

LOD 400 can be thought of as similar to the kind of information usually found in shop drawings.

4.1 CaveatsThere is no strict correspondence between LODs and design phases. Building systems are developed at differentrates through the design process – for example, design of the structural system is usually well ahead of the design ofinterior construction. At an early design phase milestone, the model will include many elements at LOD 200, but will alsoinclude many at LOD 100, as well as some at 300, and possibly even 400.

Similarly, there is no such thing as an “LOD ___ model”. As previously stated, project models at any stage of deliverywill invariably contain elements and assemblies at various levels of development.

5 Updates of This Document

While this document is intended as a reference that can be cited in agreements such as contract and BIM executionplans, it is recognized that the use of BIM in design and construction is evolving. To accommodate this evolution thisdocument will be updated periodically in clearly identifiable versions. Initially the target frequency is annually, but thatmay change in the future. In addition, interim updates may be issued if needed.

5 AIA Document E203-2013 Building Information Modeling and Digital Data Exhibit. Copyright © American

Institute of Architects 2013. All rights reserved. Definition quoted here by permission.


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Revision History

• 4/24/13 Initial draft for public review

• __/__/__ Draft Level of Development Specification 2013


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12

A – SUBSTRUCTURE

A10 – Foundations

100 A written structural narrative is provided without structural elementsmodeled. This narrative may reference an architectural mass modelthat shows generic building scale and proportion of the foundation.

200 Generic element modeling to include:

• Approximate size/shape of foundation element

• Structural grids defined in model

300 This LOD includes but is not limited to design level information suchas the engineered size/shape of the foundation.

Specific element modeling to include:

• Overall size and geometry of the foundation element

• Sloping surfaces or floor depressions

• Out to out dimensions of the members

• Material strength

Element information defined with notes or 2D details may include:

• Rebar

350 Actual element modeling to include but not limited to informationneeded for cross trade collaboration such as:

• Chamfers

• Rebar and any embedded elements modeled at congestedareas where specified by project BIM manager which istypically with in a set distance from the area of congestion

• Anchor rods

• Any permanent shoring or forming structures such ascaissons or void boxes.

400 This element level modeling shall include all information needed tofully define the fabrication and installation of the element. Additionalnon-modeled information may be included into the element.

A1010 – Standard Foundations

See A10 – Foundations


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A1010.10 – Wall Foundations (Shallow Foundations)See A10 – Foundations and A1010 – Standard Foundations

100 See A10

200 See A10

300 See A10


• Location of sleeve penetrations

• Pour joints

• Moisture retarder

• Dowels

• All elements needed for cross-trade collaboration are to bemodeled.

Additional element modeling for unit masonry foundations include

but are not limited to:• Actual location and shape of structural element

• All exposed embeds or reinforcement such as lintels

• All penetrations detailed and modeled

• Expansion joints

400 Fabrication element modeling to include but not limited to:

• Rebar detailing including hooks and lap splices

• Dowels

• Chamfer

• Finish

• Coursing for unit masonry defined• Waterproofing


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A1010.30 – Column Foundations (Deep Foundations)See A10 – Foundations and A1010 – Standard Foundations

100 See A10

200 See A1010

300 Specific element modeling to include:

• Approximate bearing depth noted with site and soilcontingencies expected

• Top of Pier

• Size of Pier


• Actual Top of Pier (TOP) and expected Bottom of Pier(BOT) modeled per engineers review of site conditions

• All elements needed for cross-trade collaboration are to be

modeled 400 Fabrication element modeling to include but not limited to:

• Depth to bearing stratum

• Penetration into bearing stratum

• Locations of lap splices

A1020 – Special Foundations

See A10 – Foundations

A1020.80 – Grade BeamsSee A10 – Foundations and A1020 – Special Foundations

100 See A10

200 See A1010

300 See A1010


• Water Stops

• Pour joints and sequences required to identify reinforcinglap spice, scheduling, etc.

• Post-tension profile and strands called out with a narrativeor modeled if required by the BIM manager


• Detailed Post-tensioned components


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A20 – Subgrade Enclosures

100 A written structural narrative is provided without structural objectsmodeled. This narrative may reference an architectural mass modelthat shows generic building scale and proportion of the foundation.


• Approximate size/shape of the subgrade enclosure element


300 This LOD included but is not limited to design intent level informationsuch as the engineered size/shape of the subgrade enclosure.


• Overall size and geometry of the subgrade element

• Sloping surfaces

• Out to out dimensions of the element



• Rebar

• Chamfers

• Finishes


• Chamfers

• Sleeve penetrations

• Pour joints

• Rebar and any embedded elements modeled at congestedareas where specified by project BIM manager which is

typically with in a set distance from the area of congestion.• Any permanent shoring or forming structures such as void

boxes

• Interior finish and/or insulation

• Expansion Joints

• All elements needed for cross-trade collaboration are to bemodeled

• Moisture retarder

Additional element modeling for unit masonry enclosures include butare not limited to:

• Actual location and shape of structural masonry element

• All exposed embeds or reinforcement such as lintels

• All penetrations detailed and modeled• Expansion joints

400 This element level modeling shall include all information needed toFully define the fabrication and installation of the element. Additionalnon-modeled information may be included into the element.

Fabrication element modeling to include but not limited to:

• Rebar detailing including hooks and lap splices

• Dowels

• Chamfer

• Finish


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16

• Coursing for unit masonry defined

• Waterproofing

A2010 – Walls for Subgrade Enclosures

See A20 – Subgrade Enclosures

A40 – Slabs-on-Grade

100 A written structural narrative is provided without structural objectsmodeled. This narrative may reference an architectural mass modelthat shows generic building scale and proportion of the slab.


• Generic slab with approximate thickness


300 This LOD included but is not limited to design intent level information

such as the engineered size/shape of the subgrade enclosure.


• Overall size, thickness and geometry of the slab-on-grade

• Slab Depressions

• Edge turn downs



• Rebar

• Moisture Retarder

• Slab penetrations


• Sleeve penetrations

• Pour joints

• Control joints


• Water Stops

• Rebar and any embedded elements modeled at congestedareas where specified by project BIM manager which istypically with in a set distance from the area of congestion.

• Void boxes

• Anchor rods

•

Moisture retarder• Dowels

• Post-tension profile and strands called out with a narrative ormodeled if required by the BIM manager

400 This element level modeling shall include all information needed tofully define the fabrication and installation of the element. Additionalnon-modeled information may be included into the element.

Fabrication element modeling to include but not limited to:

• Actual slab dimensions and profiles with fully modeled rebar

• Post tensioning components


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• All joints

• Water proofing

• Finish

A4010 – Standard Slabs-on-GradeSee A40 – Slabs-on-Grade

A4020 – Structural Slabs-on-Grade

See A40 – Slabs-on-Grade


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18

B – SHELL

B10 – Superstructure



B1010 – Floor Construction

100 See B10

200 Generic floor model to include

•

Floor with approximate dimensions• Approximate supporting framing members


B1010.10 – Floor Structural Frame

Masonry100 See B10

200 Generic Masonry superstructure to have:

• Type of structural masonry system

• Defined structural grid

•

Rough order of magnitude estimate of masonry structure300 Specific element modeling to include:

• Specific sizes of main structural elements modeled perdefined structural grid with correct dimensions.

• Rough openings with reinforcement and steel lintels calledout in typical details

• Reinforcement and fill called out in 2D

• Typical details for small penetrations


• Actual location and shape of structural masonry element

• All exposed embeds or reinforcement such as lintels• All penetrations detailed and modeled



• Waterproofing

• Coursing

This element level modeling shall include all information needed to


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fully define the fabrication and installation of the element. Additionalnon-modeled information may be included into the element.

Steel100 See B10

200 Generic steel superstructure to have:

• Type of structural system

• Defined structural grid

• Rough order of magnitude estimate of steel structure

Steel Framing Columns

100 See B10

200 See B1010 (00)


• Specific sizes of main vertical structural members modeledper defined structural grid with correct orientation.

• Structural steel materials defined in specification’s.

• Typical connection details in 2D


• Actual elevations and location of member connections

•

Large elements of typical connections applied to all structuralsteel connections such as base plates, gusset plates, anchorrods, ect.

• Any miscellaneous steel members with correct orientation

• Any steel structure reinforcement such as web stiffeners,sleeve penetrations, ect.


• Welds

• Coping of members

• Cap pates

• Washers, nuts, etc.

• All assembly elements

This element level modeling shall include all information needed tofully define the fabrication and installation of the element. Additionalnon-modeled information may be included into the element.


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Steel Framing Beams100 See B10

200 See B1010 (00)

300 Specific element modeling to includ

• Specific sizes of main horizdefined structural grid with c

Element information defined with no

• Connection detailsStructural steel materials deFinishes, i.e. painted, galva

350 Actual element modeling to includefor cross trade collaboration such as

• Large elements of typical coconnections such as base pl

• Any miscellaneous steel me

• Any steel structure reinforcepenetrations, etc.

400 Fabrication element modeling to incl

• Welds

• Coping of members• Bent plates, Cap pates, ect.

• Bolts, Washers, nuts, etc.


This element level modeling shall indefine the fabrication and installatiomodeled information may be include

:

ntal structural members modeled perorrect orientation, slope and elevation

es or 2D details may include:

finedized, etc

ut not limited to information needed:

nnections applied to all structural steellates, gusset plates, anchor rods, etc.

mbers with correct orientation

ment such as web stiffeners, sleeve

ude but not limited to:

lude all information needed to fullyof the element. Additional non-

d into the element.


20


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Steel Framing Miscellaneous Members

100 See B10

200 See B1010 (00)


• Specific sizes of main structural members modeled perdefined structural grid with correct orientation.

• Structural steel materials defined in specification’s.




• Large elements of typical connections applied to all structuralsteel connections such as base plates, gusset plates, anchorrods, etc.


• Any steel structure reinforcement such as web stiffeners,sleeve penetrations, etc.


• Welds


• Cap pates

• Washers, nuts, etc.




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22

Steel Framing Bracing Rods

100 See B10

200 See B1010 (00)


• Specific sizes of main structural braces modeled per definedstructural grid

• Structural steel materials defined in specifications.




• Large elements of typical connections applied to all structuralsteel connections such as base plates, gusset plates, anchorrods, etc.


• Any steel structure reinforcement such as web stiffeners,sleeve penetrations, etc.


• Welds


• Cap pates

• Clevis

• Bolts, Washers, Nuts, etc.




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Steel Joist

100 • See B10 for additional information

• Basic floor loading criteria and geometry would be definedwith a narrative and would include but is not limited to:

o Liveo Deado Windo Vibrationo Expected depth


• Expected depth


• Joist size, depth, and material with sloping geometry

• Spacing and end elevations

• Joist seat depth


• Non-standard joist seat depths and\or sloping joist seat

• Member designation, load capacity and deflection criteria

• Design loads


• Actual final joist profile locations with panel points

• Joist bridging and lateral braces.

• Fire protection coating

• Any miscellaneous steel pertaining to the joist

• Joist seat width

• Erection details for installation

• Chord and web member section profiles are actually defined

• Joist layout in coordination with metal deck fasteners wouldbe confirmed

• Non-standard joist seat depths and\or sloping joist seat


• Welds

• Connection plates

• Member fabrication part number

This element level modeling shall include all information needed tofully define the fabrication and installation of the element. Additional

non-modeled information may be included into the element.


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24

Cold-Formed Metal Framing

100 See B10


• Rough architectural masses• Desired member depth

• Desired member spacing


• model with specific locations and geometries


• Member size, depth, and material with sloping geometry


• Design Loads

• Deflection Criteria


• Members modeled at any interface with wall edges (top,bottom, sides) or opening through wall

• Members coming out of the plan of walls which includes butis not limited to kickers, diagonal bracing, etc.

• Bridging or straps400 Fabrication element modeling to include but not limited to:

• Welds

• Connections


• Any part required for complete installation



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Wood Floor Truss

100 See B10

• Basic floor loading criteria andgeometry would be defined with anarrative and would include but isnot limited to:

o Liveo Deado Windo Vibrationo Expected depth


• Expected depth

• Top chord or bottom chord bearing

• Truss Orientation


• Truss size, depth, and materialwith sloping geometry


• Support locations

Element information defined with notes or2D details may include:

• Member designation, loadcapacity and deflection criteria

• Design loads

350 Actual element modeling to include but notlimited to information needed for crosstrade collaboration such as:

• Actual final truss profile with panelpoints.

• Bridging and lateral braces.

• Fire protection coating

• Any miscellaneous framingpertaining the truss

• Erection details for installation

• Chord and web member sectionprofiles are actually defined

• Truss layout in coordination withdeck fasteners would beconfirmed

• Hold down locations for largebolts.

400 Fabrication element modeling to includebut not limited to:


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26

• Truss Capacity

• Connection plates


This element level modeling shall includeall information needed to fully define thefabrication and installation of the element.Additional non-modeled information maybe included into the element. Allconnection plates modeled

B1010.20 –Floor Decks, Slabs, and Toppings

Wood Floor Deck100 See B10

200 See B1010


• Diaphragm load and deflection criteria

• Deck orientation

• Deck material and thickness

• Applicable slopes

• Expected Framing member profiles, spacing, and material


• Deck fasteners

• Typical framing details

350 Actual element modeling to include but not limited to information

needed for cross trade collaboration such as:• Deck edge location

• Actual framing member and location per manufacture

• All miscellaneous framing including braces, kickers, etc.

• Deck openings modeled with support framing aroundopenings

• Point load locations

• Actual opening locations and sizes defined


• All framing accessory and fasteners modeled per expectedinstallation

• Waterproofing



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Metal Floor Deck

100 See B10

200 See B1010



• Deck material and thickness

• Expected Framing member profiles, spacing, and material

• Opening locations are prescriptively defined with notes foradditional misc. framing

• Point load locations


• Deck fasteners


• Typical weld specifications

•

Reinforcing350 Actual element modeling to include but not limited to information

needed for cross trade collaboration such as:

• Deck edge location

• Deck splice and end lap locations

• Actual deck profile and flute locations per manufacture

• All miscellaneous framing including braces, kickers, etc.

• Deck openings modeled with support framing



• Welds• Waterproofing



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28

Composite Floor Deck

100 See B10

200 See B1010



• Expected deck material and thickness

• Expected Framing member profiles, spacing, material

• Opening locations are prescriptively defined with notes foradditional misc. framing


• Deck fasteners


• Typical weld specifications

• Camber

•

Shear studs• Toppings


• Deck edge location

• Deck profile and flute locations per manufacture

• Deck splice and end lap locations

• Actual framing member and location per manufacture

• All miscellaneous framing including deck support, deckclosure, shear studs, etc.

• Slab openings modeled with support framing around

openings• Point load locations

• Slab reinforcing may need to modeled per BIM mangersrequest



• All slab reinforcing

• Welds

• Waterproofing

This element level modeling shall include all information needed to

fully define the fabrication and installation of the element. Additionalnon-modeled information may be included into the element.


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Concrete

100 See B10

200 Generic concrete superstructure to have:

• Type of structural concrete system• Defined structural grid

• Approximate geometry (e.g. depth) of structural elements


• Specific sizes and locations of main concrete structuralmembers modeled per defined structural grid with correctorientation.

• Concrete defined per spec (strength, air entrainment,aggregate size, etc.).


• Reinforcing

• Post-tension profiles and strand locations• Penetrations for items such as MEP.

• Finishes, camber, chamfers, ect.

• Typical details

• All embeds and anchor rods identified in 2D


• Reinforcement called out, modeled if required by BIMmanager, typically only in congested areas.

• Pour joints and sequences to help in identifying, reinforcinglap spice, scheduling, ect.

• Expansion Joints

• Anchor rods

• Post-tension profile and strands called out with a narrative ormodeled if required by the BIM manager.

• All embed elements

• Elevations and location of elements

• Penetrations for items such as MEP

• Any permanent forming or shoring components


• All reinforcement including post tension elements detailedand modeled

• Finishes, camber, chamfer, etc.



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30

B20 – Exterior Vertical Enclosures

100 Narrative containing percentage of materials (e.g. solid vs.glazed); or solid mass model representing overall buildingvolume.

B2010 – Exterior Walls

100 See B20

200 Generic wall objects separated by type of material (e.g. brick wall vs.curtain wall); wall thicknesses and detailed locations still flexible;mullion spacing may be included as a single-line grid pattern.

300 Composite model assembly with overall thickness that accounts forveneer, structure, insulation, air space, and interior skin specified forthe wall system. (Refer to LOD350 and LOD400 for individuallymodeled elements)

Specification of assembly materials shall be attached to the modelelements as non-graphical information.Penetrations are modeled tonominal dimensions for major wall openings such as windows, doors,

and large mechanical elements.

350 Dependent on 350 being provided by host objects such as windows,doors, etc. Headers and jambs must be modeled.


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B2010.10 – Exterior Wall VeneerDescription: Nonstructural outside face elements of exterior walls. Includes precast concrete, unit masonry,EIFS, manufactured siding, and stucco.

100 See B20

200 See B2010

300 See B2010

350 Exterior wall veneer modeled as a separate element.

All openings modeled to actual rough dimensions.

Precast concrete panels are individually modeled. Connectionpoints are specified.

400 All assembly components modeled including, but not limited tomasonry units, reinforcing, flashing, sealants, anchors, andembeds.

B2010.20 – Exterior Wall ConstructionDescription: Exterior wall construction including backup systems for wall veneer. May be vertical load bearing.Includes cast-in-place concrete walls, precast concrete walls, unit masonry walls, metal framed wall systems,and wood framed wall systems.

100 See B20

200 See B2010

300 See B2010

350 Exterior wall construction modeled as a separate element.

All openings modeled to actual rough dimensions. Headersand jamb framing are modeled.

Framing, unit masonry, or reinforcement specification includedas non-graphical information.

400 All assembly components modeled including, but not limited tostuds, tracks, masonry units, reinforcing, sheathing, andinsulation.


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32

B2010.30 – Exterior Wall Interior SkinDescription: Materials to provide finish or protective covering on inside of face of exterior walls. May includeinsulation and vapor retarder.

100 See B20

200 See B2010

300 See B2010

350 Exterior wall interior skin modeled as a separate element.

All openings modeled to actual rough dimensions.

Framing, unit masonry, or reinforcement specification includedas non-graphical information.

400 All assembly components modeled including, but not limited tostuds, tracks, masonry units, reinforcing, sheathing, andinsulation.

B2010.50 – ParapetsExterior wall construction above plane of roof.

< Use specifications for B2010, B2010.10, B2010.20, and B2010.30. >

B2010.60 – Equipment Screens

Exterior wall construction to screen equipment from public view.

100 See B20

200 See B2010

300 Overall assembly modeled to actual thickness with surfacerepresentation of fenestration condition.

350 Framing member sizing represented in quantity, size, shape,location and orientation.

Surface area, joint sizing, framing member sizing representedin quantity, size, shape, location and orientation.

400 Connections are modeled (anchors, embeds, etc.)


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B2020 – Exterior Windows

100 See B20

200 Windows approximate in terms of location, size, count and type.Units can be modeled as a simple, monolithic component; orrepresented with simple frame and glazing.

Nominal unit size is provided.

B2020.10 – Exterior Operating WindowsAlso includes: B2020.20 - Exterior Fixed Windows; B2020.50 - Special Function Windows

300 Units are modeled based on specified location and nominal size.Outer geometry of window frame elements and glazing modeled towithin 1/8” [1 mm] precision.

Operation is indicated

Non-graphic information associated with model element:

• Aesthetic characteristics (finishes, glass types)

• Performance characteristics in narrative, but associatedwith element in model (i.e. U-value, wind loading, blastresistance, structural, air, thermal, water, sound)

• Attachment method of window to structure

350 Modeled units will meet the minimum requirements of LOD 300, inaddition to the following:

• Rough opening dimensions

• Embed geometry

• All connection attachment details

400 Modeled units will meet the minimum requirements up to andincluding LOD 350, in addition to the following:

• Frame profiles

• Glazing sub-components (gaskets)

• Attachment components

B2020.20 – Exterior Fixed Windows[See B2020.10]

B2020.30 – Exterior Window Wall[See B2020.10]

B2020.50 – Exterior Special Function Windows[See B2020.10]


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34

B2050 – Exterior Doors and Grilles

100 Simple representation of a door unit. Size, count, and location areapproximate.

200

Units can be modeled as a simple, monolithic component; orrepresented with simple frame and glazing.

Nominal unit size is provided.

B2050.10 – Exterior Entrance DoorsExterior personnel door assemblies at main entrances. Includes automatic, revolving, balanced, and otherspecial operating entrance doors, and sliding storefront wall systems.

100 See B20

200 See B2050300 Doors and door frames defined by type, hardware; narrative

associated with specific model elements; envelope and spacerequirements are represented in model element.

Specific doors, frames and hardware. Hardware set functionality andtypes are specified.


• Rough opening is modeled (if applicable)

• Major framing elements are modeled at jambs and head


B2050.20 – Exterior Utility DoorsExterior personnel door assemblies other than at main entrances.

100 See B20

200 See B2050

300 Doors and door frames defined by type, hardware; narrativeassociated with specific model elements; envelope and spacerequirements are represented in model element.

Specific doors, frames and hardware. Hardware set functionality and

types are specified.


• Rough opening is modeled




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B2050.30 – Exterior Oversize DoorsLarge exterior door assemblies to allow for passage of large objects involving various operating methods.

100 See B20

200 See B2050

300 Doors and door frames defined by type, hardware; narrativeassociated with specific model elements; envelope and spacerequirements are represented in model element.

Specific doors, frames and hardware. Hardware set functionality andtypes are specified.

• Clearance zones are modeled for operation of overhead doors

• Enclosures and motor housings are modeled with overallnominal dimensions


• Rough opening is modeled (if applicable)• Major framing elements are modeled at jambs and head


B2050.40 – Exterior Special Function Doors[See B2050.20 Exterior Utility Doors]

B2050.60 – Exterior GrillesExterior devices of open construction to provide moveable barrier to provide access through wall or otherdivider.

100 See B20

200 See B2050

300 See B2050





B2050.70 – Exterior GatesExterior devices of solid or open construction to provide moveable barrier to provide access through wall orother divider.

[See B2050.60 Exterior Grilles]

B2050.90 – Exterior Door Supplementary ComponentsIncludes frames, hardware, glazing and louvers that are part of door to be included with exterior door elementsabove as appropriate.


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36

B2070 - Exterior Louvers and Vents

100 Represented as a calculated value, usually derived as a percentage ofexterior vertical surface area; or, as a ratio to overall habitable space.

200 Generic model element that is indicative of approximate area andlocation of intended louver/vent.

B2070.10 – Exterior Louvers100 See B20

200 See B2070

300 Specific model element, indicative of specific area and location ofintended louver/vent.

• Includes specific frame (boundary dimensions) and blades.

• Opening for louver is cut from host wall





B2070.50 – Exterior Vents[See B2070.10 Exterior Louvers]

B2080 - Exterior Wall Appurtenances

B2080.10 – Exterior Fixed Grilles and ScreensExterior enclosures, grilles and screens of wood, metal, plastic, and other materials for a variety of purposesincluding screening of equipment.

B2080.30 – Exterior Opening Protection DevicesManufactured items such as louvers, fins, shutters, demountable panels, awnings, and sun screens to providesun control, privacy, security, insulation, and storm protection on exterior of windows, skylights, and entrances.Includes fixed and moveable, manually and electrically operated, and automatically controlled devices.

B2080.50 – Exterior Balcony Walls and Railings

Manufactured items such as louvers, fins, shutters, demountable panels, awnings, and sun screens to providesun control, privacy, security, insulation, and storm protection on exterior of windows, skylights, and entrances.Includes fixed and moveable, manually and electrically operated, and automatically controlled devices.

B2080.70 – Exterior Fabrications[See general LOD definitions.]

B2080.80 – Bird Control Devices[See general LOD definitions.]


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B2090 – Exterior Wall Specialties

Complete fabrication of metal, wood, and fiberglass, including accessories and appurtenances. For example,clocks, below-grade egress assemblies, and window wells.

See general LOD definitions.

B30 – Exterior Horizontal Enclosures100 Narrative, information attached to other model elements.

B3010 – Roofing

100 Narrative, information attached to other model elements.

200 Generic assembly that may contain spatial (layer) allowance forstructural slab/deck and/or framing system.

300 Individual substrate layers may not be separately modeled, butthey are specified and their extents are shown precisely.

• Roof structure is modeled separately.

B3010.10 – Steep Slope RoofingLapped roofing shingles, shakes and roofing tiles, including fastening and flashing products and methods.

[See B1020 - Roof Construction. Steep slope roofing material is often modeled as a layer within the overall roofstructure assembly.]

B3010.50 – Low Slope Roofing

Includes membrane roofing of various types and protected membrane roofing, including fastening and flashingproducts.

100 See B30

200 See B3010

300 Specific material thickness, openings are subtracted from solid.Framing is a separate assembly, see SUPERSTRUCTURE.Drainage pitches are modeled.

350

400

B3010.70 – Canopy Roofing


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38

B3010.90 – Roofing Supplementary ComponentsIncludes substrate boards, vapor retarder, air barriers, deck insulation, flashing and sheet metal, andexpansion joints to be included with roofing elements above as appropriate.

100 See B30

200 See B3010

300

350

400

B3020 – Roof Appurtenances

100 See B30

200 Not modeled

300

B3020.10 – Roof AccessoriesIncludes ladders, curbs, vents, walkways, and snow guards.

[See also: B1080.80 - Ladders]

100 See B30

200 Not modeled

300 Ladders: Specific assemblies indicating length, width andconnection method.

350

400

B3020.30 – Roof SpecialtiesIncludes cupolas, spires, steeples, and weathervanes.

See general LOD definitions.

B3020.70 – Rainwater ManagementIncludes conductor heads, gutters, downspouts, scuppers, and splash blocks.

100 See B30

200 Generic assemblies.

[See also D2030.20 Stormwater Drainage Equipment]

300 Mfr. Specific drains, all connected drainage (?). Locationsspecific.

350

400


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B3040 – Traffic Bearing Horizontal Enclosures

100 See B30

200 Not modeled.

300

B3040.10 –Traffic Bearing CoatingsIncludes surface applied waterproofing exposed to weather and suitable for pedestrian or vehicular traffic.

[Not Modeled]

B3040.30 – Horizontal Waterproofing MembraneIncludes substrate board, deck insulation, vapor retarder, sheet metal flashing and trim, flexible flashing, andexpansion joints.

100 See B30

200 Not modeled300 Specific material thickness, manufacturer, finish, color

350

400

B3040.50 – Wear SurfacesWearing surfaces on top of horizontal waterproofing membrane that are suitable for pedestrian or vehiculartraffic.

100 Not modeled

200 Not modeled

300 Specific material thickness, manufacturer, finish, color

350

400 Placement of pedestals?

B3040.90 – Horizontal Enclosure Supplementary ComponentsIncludes substrate board, deck insulation, vapor retarder, sheet metal flashing and trim, flexible flashing, andexpansion joints to be included with horizontal enclosure elements above as appropriate.

[Supplementary components may be modeled with other assemblies as listed in the tables above.]

B3060 – Horizontal Openings

100 Not modeled.

200 Not modeled.


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40

B3060.10 – Roof Windows and SkylightsWearing surfaces on top of horizontal waterproofing membrane that are suitable for pedestrian or vehiculartraffic.

100 Not modeled.

200 Not modeled.

300 Specific material thickness, manufacturer, finish, color.

350

400 Placement of pedestals?

B3060.50 – Vents and HatchesOther roof openings such as roof hatches, smoke vents, and gravity roof ventilators.

B3060.90 – Horizontal Opening Supplementary ComponentsIncludes: Frames, hardware, glazing, flashing, and joint sealants to be included with horizontal opening

elements above as appropriate.

[Supplementary components may be modeled with other assemblies as listed in the tables above.]