EM 1: Architect’s mass structure model
Project Stage
Exchange Disciplines
Description
Example Software:
Export and Import
Related Exchange
Models
EM 2: Structural design model
31-20-20-00 Design Development
Architecture (33-21-11-00)
Structural Engineer (33-21 31 14)
General Contractor (33-41 11 11)
Purpose: provides structural engineer with base layout which determines structural design and its logic. Previously reviewed by structural engineer also.
Includes all structural concrete elements, major load placements, elevators & stair shafts concrete walls, foundations, if laid out.
Level of Detail is conceptual, with approximate dimensions
Special attributes earth buttresses, pilings special loads
Export: Revit, ArchiCad, Bentley, Vectorworks
Import: STAAD Pro, RISA, ETABS
May be one-way or include non-model feedback
Earlier exchange between architect and structural engr, and contractor
Project Stage
Exchange Disciplines
Description
Example Software:
Export and Import
31-25-00-00 Construction Documentation
Structural Engineer (33-21 31 14)
General Contractor (33-41 11 11)
Concrete Contractor (33-41 11 14)
Site Contractor (33-41 11 14)
Reinforcing Detailer (33-41-11-14)
Purpose to derive detailed structural analysis and determine steel reinforcing section, lap standard details, and special connections.
Optionally provide early mill order for reinforcing; early shoring needs.
Major elements; RC members and steel cross section requirements, standard details, lap lengths, special connections, joints, concrete, steel reinforcing and tendon specs, including coatings.
Level of Detail sufficient for determining analytic model
Special attributes: Steel cross sectional areas, required concrete joints.
Export: STAAD Pro, RISA, ETABS
Import: Tekla, ProConcrete, StruCad
Related Exchange
Models

EM 3: Site plan & foundation model
Project Stage
Exchange Disciplines
Description
Example Software:
Export and Import
31-25-00-00 Construction Documentation
Civil Engineer (33-21 31 11)
Structural Engineer (33-21 31 14)
General Contractor (33-41 11 11)
Purpose Structurally informed site & foundation model, with general layout of complete facility and site layout, delivery paths, allowing planning for concrete delivery, lifting, formwork placement, pile planning, buttress planning.
Includes base concrete model from EM 1; identifies slopes, site access location, storage areas, placement options; identifies protected vegetation areas; soil conditions; subsurface piping, & sewer or drain lines; power supplies; includes cut & fill and general foundation pads and piers and shoring, if needed; fencing and security; also retaining walls and other outdoor improvements.
Major elements all walls, structural elements, foundation elements,
Storm water management, fencing & security.
Level of Detail sufficient for project spatial coordination or major structure
Special attributes site geometry & land uses
Export: AutoCad Civil 3D, Microstation, Vectorworks, SiteOps,
Earthworks
Import: Navisworks, BIMsight, Tekla, ProConcrete
EM1 Related Exchange
Models
EM 4: Site planning model
Project Stage
Exchange Disciplines
Description
Example Software: Export and Import
31-40 30 31 Concrete Placement& Resource Planning
Site Contractor (33-41 11 14)
Civil Engineer (33-21 31 11)
General Contractor (33-41 11 11)
Concrete Contractor (33-41 11 14)
Purpose of exchange: To coordinate concrete delivery & placement schedule with other site work
Major elements: Verify & review access points; queuing areas, pumping or lifting requirements; schedule of operations.
Level of Detail: plan layout
Special attributes
Export: AutoCad Civil 3D, Microstation, Vectorworks, SiteOps,
Earthworks
Import:Tekla CM, Navisworks, Synchro

Related Exchange Models
EM 5: Site planning as-built
Project Stage
Exchange Disciplines
Description
Concrete Execution (31-40 40 24)
(33-41 11 14) Site Contractor
(33-41 11 11) General Contractor
Purpose of exchange: to document final site modifications made for concrete work, as carried out.
Major elements: cut & fill, as-built concrete subterranean elements; walkways and any exterior retaining walls
Level of Detail: as-built placement and as required by owner.
Special attributes
Example Software: Export and Import
Related Exchange Models
Export: AutoCad Civil 3D, Microstation, Vectorworks, SiteOps,
Earthworks
Import: Revit, Tekla, Allplan, as-built BIM tool
EM 6: Mechanical system model
Project Stage
Exchange Disciplines
Description
Example Software:
Export and Import
Related Exchange
Models
31-25-00-00 Construction Documentation
Mechanical Engineer (33-21-31-17)
Structural Engineer (33-21 31 14)
Concrete Contractor (33-41 11 14)
Purpose of exchange; to provides placement of major mechanical system components sufficient for defined connections and passthroughs and other aspects requiring spatial coordination. Also identify insulation needs and areas to include it. Defines pads and curbs needed for mech. equipment
Major elements; Major mechanical elements and their connections to the structure; ducts and piping to/from mech. equipment needed for routing. Insulation requirements.
Level of Detail: sufficient for layout.
Special attributes: Special access areas for maintenance/repairs.
Export: Revit, Bentley, Allplan
Import: Tekla, ProConcrete, StruCad
EM 7: Equipment embeds & plates
Project Stage
Exchange Disciplines
31-40 30 21 Concrete Resource& Placement Planning
Mechanical Engineer (33-21 31 17)
Concrete Contractor (33-41 11 14)
Reinforcing Detailer (33-41 11 14)

Description
Example Software:
Export and Import
Related Exchange
Models
EM 8: Insulation placement
Purpose of exchange: To identify all plates and embeds needed for mechanical equipment connections or pass-throughs for routing.
Major elements: Steel for connections of external systems; also blockouts required for constructability.
Level of Detail: fabrication detailing – all components. Plates should be in editable format
Special attributes: space for maintenance access
Export: various MEP applications
Import: Revit Structures, Revit Structures, Tekla, Allplan
May be one-way or round trip
Project Stage
Exchange Disciplines
Description
31-40 30 21 Concrete Placement & Resource Planning
Mechanical Engineering (33-21-31-17)
Concrete Contractor (33-41 11 14)
Purpose of exchange: to identify placement of thermal insulation to go over or within concrete
Major elements: insulation performance and type- rigid, sprayed, etc.
Level of Detail; surface areas addressed and performance criteria
Special attributes: insulation specifications.
Export: Revit, ArchiCad
Import: Pro Concrete, Tekla, Allplan
Example Software:
Export and Import
Related Exchange
Models
EM 9: Structural embeds & plates
Project Stage
Exchange Disciplines
Description
Example Software:
Export and Import
31-40 30 21 Concrete Resource& placement Planning
Reinforcing Detailer (33-41 11 14)
Structural Engineer (33-21 31 14)
Purpose of exchange: To identify all plates, reinforcing, and embeds for all concrete pieces. Also identify special formwork considerations such as decking for placement and connections. Reviewed by structural engineer.
Major elements Steel for internal and external connections; blockouts required for constructability; placement stops (edge-of-slab), mechanical-generated curbs and plates, decking and other permanent formwork; composite materials, if used, are defined here
Level of Detail: fabrication level detailing – all components included.
Special attributes: reinforcing and embed material specifications.
Export: Revit Structures, Revit Structures, Tekla, Allplan
Import: ETABs, STAAD-Pro
May be one-way or with non-model feedback

Related Exchange
Models
EM.10: Reinforcing & tendon review model
Project Stage
Exchange Disciplines
Description
Example Software:
Export and Import
Related Exchange
Models
31-25-00-00 Construction Documentation
Reinforcing Contractor (33-41 11 14 17)
Reinforcing Fabricator (33-41-11-14)
Structural Engineer (33-21 31 14)
Purpose of exchange; to provide reinforcement placement review with consideration of structural requirements and concrete placement.
Checks section areas, spacing
Major elements; All concrete sizes, All member-areas of steel
Level of Detail: sufficient for layout.
Special attributes:
Export: Tekla, ProConcrete, StruCad
Import: Revit, Bentley, Allplan
EM 11: Initial rebar and tendon member layout
Project Stage
Exchange Disciplines
Description
Example Software:
Export and Import
Related Exchange
Models
31-40 30 21 Concrete Placement & Resource Planning
Rebar Detailer (33-21-31-14)
Reinforcing Contractor (33-41 11 14 17)
Concrete Contractor (33-41 11 14)
Structural Engineer (33-21 31 14)
Purpose of exchange: identifies placement and sizing of rebar, includes plates and embeds
Major elements: all rebar, mesh and tendons, properly placed within concrete, with preliminary layout of ties, laps and special connections.
Level of Detail; Sufficient for bill of material
Special attributes:
Export: Tekla, ProConcrete, Revit, Allplan
Import: users to review and check detail layouts
EM 12: Detailed reinforcing & tendon integrated layout
Project Stage
Exchange Disciplines
31-40 30 31 Concrete Resource & Placement Planning
Rebar Detailer (33-21-31-14)
Structural Engineer (33-21 31 14)
Concrete Contractor (33-41 11 14)
Concrete Formwork Contractor (33-41 11 14)

Description
Reinforcing Fabricator (33-41 11 14)
Rebar & Tendon Distributor (33-25 41 11)
Purpose of exchange: Integrates reinforcement and tendon placement with both integrated structure and pours.
Major elements: Reinforcement and tendon items to be associated with pours, all embeds and connection plates, and with pour work packets (all concrete related pour activities in schedule)
Level of Detail: Complete detail.
Special attributes
Example Software: Export and Import
Related Exchange Models
Export: Tekla, ProConcrete. Allplan
Import: Tekla, Navisworks, Synchro
May be one-way or round trip
EM 13: Reinforcing & tendon placement sequence
Project Stage
Exchange Disciplines
Description
31-40 30 31 Concrete Resource & Placement Planning
Concrete Formwork Contractor (33-41 11 14)
Reinforcing Detailer (33-21-31-14)
Reinforcing Fabricator (33-41 11 14)
Concrete Contractor (33-41 11 14)
Reinforcing Contractor (33-41 11 14 17)
Purpose of exchange: Coordinate reinforcement and tendon placement with pour sequence and schedule.
Major elements: All reinforcement and tendon items, embeds and formwork to be associated with schedule and placement.
Level of Detail: Complete detail; schedule for formwork and reinforcing elements.
Special attributes
Example Software: Export and Import
Related Exchange Models
Export: Tekla, ProConcrete. Allplan
Import: Tekla, Navisworks, Synchro
May be one-way or round trip
EM 14: Formwork finish & detail geometry
Project Stage
Exchange Disciplines
Description
31-20-20-00 Design Development
Architecture (33-21-11-00)
Concrete Contractor (33-41 11 14)
Concrete Formwork Contractor (33-41 11 14)
Concrete Finish Contractor (33-41 11 14)
Purpose is to identify special formwork requirements for CIP work and plan for concrete finishes. Associated finish specification & materials and procedures available
Includes surface areas affected
Level of Detail identify all non-standard finishes and their

Example Software:
Export and Import
Related Exchange
Models
EM 15: Detailed concrete model specifications
Special attributes: colors and finishes are selected
Export: Revit, ArchiCad, Bentley, Vectorworks
Import: Tekla, Structureworks, Pro-Concrete
Project Stage
Exchange Disciplines
Description
Example Software:
Export and Import
Related Exchange
Models
31-40 30 21 Concrete Resource & Placement Planning
Reinforcing Contractor (33-41 11 14 17)
Concrete Contractor (33-41 11 14)
Finish Contractor (33-41 11 14)
Structural Engineer (33-21 31 14)
Reinforcing Detailer (33-41-11-14)
Formwork Contractor (33-41 11 14)
Purpose of exchange provides RC detail layout, with all members defined and rebar placed. Connections also defined. Used for structural review, Finish contractor coordination, schedule coordination.
Major elements All members, with reinforcing placed for members and internal and external connections. Fish placements made
Level of Detail: Initial fabrication-level layout, but missing external connections, joints, blockouts. Model should be editable
Special attributes
Export: Tekla, ProConcrete,
Import: Tekla, ProConcrete,
EM 16: Formwork placement model
Project Stage
Exchange Disciplines
Description
Example Software: Export
31-40 30 31 Concrete Placement & Resource Planning
Concrete Formwork Contractor (33-41 11 14)
Concrete Finish Contractor (33-41 11 14)
Concrete Contractor (33-41 11 14)
Purpose of exchange: Define formwork placement plan; which areas use movable formwork; which requires custom work, metal decking, which need form inserts for patterning; also includes formwork and shoring placement planning
Major elements; Concrete surface areas and their formwork needs, defined as attributes/annotations; decking placement
Level of Detail: conceptual definition of intent. Includes scheduling of formwork placement
Special attributes
Export: Revit, ArchiCad, Tekla

and Import
Related Exchange Models
Import: Tekla, ProConcrete, Allplan, StruCad
EM 17: Formwork as placed model
Project Stage
Exchange Disciplines
31-40 40 24 Concrete Execution
Concrete Contractor (33-41 11 14)
General Contractor (33-41 11 11)
Formwork Contractor (33-41 11 14)
Reinforcing Contractor (33-41 11 14 17)
Description
Example Software: Export and Import
Related Exchange Models
Purpose of exchange Fully coordinate formwork and shoring schedule with general contractor
Major elements: monolithic model of concrete; all planned pour breaks; all embeds, reinforcing and tendons; areas used for shoring and concrete placement; all metal and other decking, updated frequently by on-the-ground status
Level of Detail: includes all concrete tasks, pour breaks
Special attributes
Export: Tekla CM, Allplan
Import: P6, Microsoft Project
EM 18: Actual placement RFIs
Project Stage
Exchange Disciplines
Description
Concrete Execution (31-40 40 24)
Concrete Contractor (33-41 11 14)
General Contractor (33-41 11 11)
Batch Plant (33-41 21 24)
Purpose of exchange: To record the actual pour breaks vs. those planned, for archival documentation and planning
Major elements: Concrete elements; actual pour breaks, added reinforcing
Level of Detail: reinforcing, pour break geometry, any bonding agents,
Example Software: Export and Import
Related Exchange Models flatness tests, stress records.
Special attributes
Export: Tekla CM, Allplan
Import: P6, Microsoft Project
EM 19: Construction coordination model
Project Stage
Exchange Disciplines
31-40 30 21 Concrete Placement & Resource Planning
General Contractor (33-41 11 11)
Site Contractor (33-41 11 14)
Reinforcing Detailer (33-41-11-14)

Description
Example Software:
Export and Import
Related Exchange
Models
Formwork Contractor (33-41 11 14)
Structural Engineer (33-21 31 14)
Purpose of exchange: to coordinate CIP concrete with all other building systems for constructability and clash resolution; takes place multiple times throughout the project process. Relies on concrete element objects.
Major elements: all concrete object shapes; reinforcing not included
Level of Detail; All external shape geometry, without reinforcing or other embeds
Special attributes:
Export: Revit, ProConcrete, Tekla,
Import: Tekla, Navisworks, Synchro, Solibri
EM 20: Construction reference sequence
Project Stage
Exchange Disciplines
Description
31-40 30 31 Concrete Placement & Resource Planning
General Contractor: (33-41 11 11)
Concrete Contractor: (33-41 11 14)
Finish Contractor (33-41 11 14)
Structural Engineer (33-21 31 14)
Architect (33-21-11-00)
Reinforcing Contractor (33-41 11 14 17)
Formwork Contractor (33-41 11 14)
Site Contractor (33-41 11 14)
Civil Engineer (33-21 31 11)
Purpose of exchange: Coordinate layout of all systems for clashes; coordinate schedule, esp. with formwork and finishing tasks
Major elements: all major systems: structure, MEP, architectural, for clash detection and coordination. Concrete placement & discrepancy
Example Software: Export and Import report
Level of Detail: full detail for concrete finishes and formwork
Special attributes: concrete finishing spaces
Export: Tekla, Revit, ProConcrete, Allplan
Import: Revit, Navisworks, Tekla, Allplan
Related Exchange Models EM 8;
EM 21: Post-tension as-built
Project Stage
Exchange Disciplines
Description
Erection Phase (31-40-40-14-11)
Reinforcing Contractor (33-41 11 14)
Testing Agency (33-25 54 00)
General Contractor (33-41 11 11)
Purpose of exchange: document any changes to the post-tensioning specification, placement due to installation and tensioning operations;

report any changes to testing agency
Major elements: Tensioning ducts, cables and anchors, monolithic structure
Level of Detail: As required by owner
Special attributes: final tensions in cables; specs on finishing,
Example Software: Export and Import
Related Exchange Models waterproofing on tendon anchors
Export:
Import:
EM 22: Client as-built model
Project Stage
Exchange Disciplines
Description
Example Software: Export and Import
31-40 40 14 11 Erection Phase
General contractor 33-41 11 11
Owner/client (33-55 21 00)
Purpose of exchange: to hand over as-built model to client
Major elements: as specified in contract
Level of Detail: as specified in contract
Special attributes: as required
Export: Revit, Bentley Architecture, Tekla, Allplan
Import: ??