em-6 structural design model – scope of exchange

EM-6 Structural Design Model – Scope of Exchange

• Concrete Objects - Columns, Beams, Walls, Slabs, Foundations• Project Parameters (Cover, Concrete Mat, Steel R/F Mat, Splice/Dev Lengths)• Concrete Material Specs• Reinforcing Steel Material Specs• “Design Intent” Rebar (LOD 300/350) for all Objects except Two-Way Slabs• Rebar Layout Standards (ie. 2-D “linked” drawings) using ACI 315 Detailing

Standards or alternately provided by EOR• Scope document for MVD Working Group Review – May/June 2019• Scope document to Full Committee (“Straw”) Ballot – July/August 2019

Real World Item General Description IFC Item (entity data type)Columns Discrete element, vertical or inclined, spanning between floors IfcColumn or IfcColumnStandardCase

BeamsGrade Beams

Discrete element, horizontal or inclined, spanning at a floorDiscrete element, horizontal or inclined, cast on the ground

IfcBeam or IfcBeamStandardCase

Walls Area element defined by a surface and thickness, spanning between floors

IfcWall or IfcWallStandardCase

Slabs Area element defined by a surface and thickness, spanning at a floor IfcSlab or IfcSlabStandardCase

Spread Footings Discrete horizontal slab-like element supporting one or more columns/walls

IfcFooting (with PredefinedType of PAD_FOOTING)

Strip Footings Continuous horizontal slab-like element supporting one of more columns/walls

IfcFooting (with PredefinedType of STRIP_FOOTING)

Mat Foundation / Slab-On-Grade

Area element defined by a surface, with constant or varying thickness, cast on the ground, usually supporting one of more columns/walls

IfcSlabStandardCase for Uniform ThicknessIfcSlab for Non-Uniform Thickness(with PredefinedType of BASESLAB)

Drilled Piers, Caissons, Piles

Discrete circular element carrying loads in a deep foundation system IfcPile (Predefined Types to be determined)

Pile Cap Discrete horizontal slab-like element placed above Pile elements IfcFooting (with PredefinedType of PILE_CAP)

Column Drop Panel Discrete horizontal slab-like element placed above a column within the slab (ie. Thickness usually includes the slab)

IfcSlabStandardCase (with PredefinedType ??)

EM-6 Structural Design Model - Scope of Exchange

Exposure Type

StructuralElement Type

Not Exposed to weather or in contact with

ground

Exposed to weather or in contact with

ground

Cast against and permanently contact with

groundColumn, Beam 1.5” 2” 3”

Wall 0.75” 2” 3”

SlabTop BarsBottom Bars

0.75”0.75”

2:2”

3”3”

Spread FootingStrip FootingPile CapGrade BeamMat Foundation

3” 3” 3”

Slab On-Grade 2” 2” 3”

Drilled Pier, Caisson, Pile

3” 3” 3”

EM-6 Project Parameters – Concrete Cover Table

EM-6 Project Parameters – General Concrete Materials Table


ConcreteStrength

Strengthat

Day

ConcreteType

Notes

Columns 6000 28 NWT

Beams 5000 28 NWTWalls/Link Beams 4000 28 NWT

Slab (One-Way, Two-Way) 4000 28 NWT

Spread Footing 4000 28 NWT

Strip Footing 4000 28 NWT

Mat Foundation 4000 28 NWT

Slab On-Grade 4000 28 NWT

Grade Beam 4000 28 NWT

Drilled Pier, Caisson, Pile 4000 28 NWT

Pile Cap 4000 28 NWT

EM-6 Project Parameters – Detailed Concrete Materials as per Pset_ACI_ConcreteMaterial

ConcreteMaterial

Name

Comp.Strength

Comp. Strength

Age

DensityClass

DensityMin.

DensityMax.

W/CRatio

Max.Size

CourseAggr.

C6000 6000 28 NWT

B5000 5000 28 NWTW8000 8000 56 NWT

S4000 4000 28 NWT

F4000 4000 28 NWT

EM-6 Project Parameters – Reinforcing Steel Materials Table (Example format & Data)


ReinforcingType

Min.Bar Size

Max.Bar Size

Grade Notes

Column

Vertical Bars Uncoated #6 #11 75

Ties Uncoated #3 #5 60

Beam

Primary Bars Uncoated #6 #9 60

Stirrups Uncoated #3 #5 40

Wall


Horizontal Bars Uncoated #4 #8 60


Slabs - Parking

Top Bars/Bot Bars Epoxy #4 #8 60Slabs - Office

Top Bars/Bot Bars Uncoated #4 #8 60Mat Foundation

Bars Uncoated #4 #8 75


ReinforcingType

Min.Bar Size

Max.Bar Size

Grade Notes

Spread Footing Uncoated #4 #9 60

Strip Footing Uncoated #4 #9 60

Slab On-Grade

Mesh Galvanized W3.5/W3.5

W6.5/W6.5

60


Grade Beam

Primary Bars Uncoated #4 #9 60

Stirrups Uncoated #3 #4 40

Drilled Pier, Caisson, Pile


Ties Uncoated #3 #5 60 Spiral

Pile Cap



From the EOR by Element Type/Location as described below:

EM-6 Project Parameters – Reinforcing Steel Materials Table from 131.2R

EM-6 Project Parameters – Reinforcing Steel Splice Data

Real World Item General Description IFC Item (entity data type)

Column Discrete element, vertical or inclined, spanning between floors

IfcColumn or IfcColumnStandardCase

Material General Description IFC Item (entity data type)

Concrete Concrete Material Specification IfcMaterial with Pset_ACI_ConcreteMaterial

Reinforcement Reinforcing Material Specification IfcMaterial with Pset_ACI_ReinforcingMaterial

ElementAttributes

General Description IFC Item (entity data type)

Cross-Section Geometry

Support for any Profile Extruded along the definition line with Cardinal Point

IfcMaterialProfileSetUsage

Column

Sample Standard Reinforcing Layout Details

Column ConcreteGeometry

Concrete MemberData Label

PossibleData Values

OptionalRequired

Location Line, Cardinal Point and Rotation Angle from Structural BIM

MemberTypeMaterialNameShapeTypeWidthDepthDiameterThickAlongWidthThickAlongDepth

ColumnC6000Square, Rectangular, Circular, L-Shape, ?243636 (if Circular)18 (if L-Shaoe)12 (if L-Shaoe)

RequiredOptionalRequiredRequiredRequiredRequiredRequiredRequired

Pset_ACI_ColumnSection property set data

ColumnConcrete Reinforcing

Data LabelPossible

Data ValuesOptionalRequired

ReinforcingMarkTotalVerticalBarsPerLayerVerticalBarSizeAtCornersVerticalBarsAlongWidthVerticalBarsAlongDepthVerticalBarsAlongWidthThickVerticalBarsAlongDepthThickVerticalBarsPerBundleTiesByZoneTieNumberSetsTieLayoutTypeTieLayoutDetailVerticalBarSpliceTypeReinforcingStandardDetails

C110-#8, 8-#8 (Layer 1, Layer 2, etc)#113-#8 4-#8 3-#8 (L-Shape Only)3-#8 (L-Shape Only)0 No Bundle, else 2, 3, etc.6-#3@6, #3@12, 6-#3@6 (Bot, Middle, Top)3Rectangular, Circular, SpiralLinked File or Tie Set Type from Detail ShtTangential, Radial, Bearing, MechanicalProject Linked File

RequiredRequiredOptionalOptionalOptionalRequiredRequiredRequiredRequiredRequiredOptionalRequiredRequiredRequired

Pset_ACI_ColumnDesignIntentReinforcing property set data

Examples of Linked File for Tie Layout Detail

Column

Source? – ACI 315 & CRSI

Column – BIM Object Data Example – Autodesk Revit


Beam Discrete element, horizontal or inclined, spanning at a floor

IfcBeam or IfcBeamStandardCase




ElementAttributes




IfcMaterialProfileSetUsage(New in IFC4)

Beam

Beam ConcreteGeometry


PossibleData Values

OptionalRequired

Location Line, Cardinal Point and Rotation Angle from Structural BIM

MemberTypeMaterialNameShapeTypeWidthDepth

Beam or GradeBeam?B5000Rectangular2436

RequiredOptionalRequiredRequiredRequired

Pset_ACI_BeamSection property set data

Proposed Reinforcement Data Label

Possible Data Values OptionalRequired

ReinforcingMarkTopBarsStartTopBarsEndTopBarsContinuousBotBarsStartBotBarsEndBotBarsContinuousSideBarsEachFaceStirrupsContinuousStirrupsStartStirrupsEndStirrupsBalanceStirrupLayoutDetailReinforcingStandardDetails

B34-#8-A, 4-#6-B4-#82-#86-#9-(4+2)4-#92-#93-#5#4@10-2Legs12-#4@8-4Legs18-#4@8-4Legs#4@12-2LegsLinked File or Stirrup Type from Detail Sht.Linked File

RequiredRequiredRequiredRequiredRequiredRequiredRequiredRequiredRequired if Start, End & Balance are OmittedRequiredRequired

Sample Standard Reinforcing Layout Detail

BeamPset_ACI_BeamDesignIntentReinforcing property set data

Examples of Linked File for Stirrup Type Layout Details

Beam

-

Issues:• Cantilever Beams - A,B,C Bars (Need diagram to show layout)• Start and End of Member input consistently with Scheduled R/F

Beam – BIM Object Data Example – Autodesk Revit


Wall Area element defined by a surface and thickness, spanning between floors

IfcWallStandardCase (for uniform thickness verticalwalls)IfcWall (all others)




ElementAttributes


Geometry, Thickness and Position

Support for any uniform thickness wall defined by line or arc, with height and position (offset in plan).

IfcMaterialLayerSetUsage

Wall

Wall ConcreteGeometry


PossibleData Values

OptionalRequired

Location Line, Wall Position and Height

MemberTypeMaterialNameShapeTypeLocationLinePositionPostionLineLengthThickness

WallW8000RectangularCenter, Left, Right3618

RequiredOptionalRequiredRequiredRequiredRequired

Pset_ACI_WallSection property set data

Proposed Reinforcement Data Label Possible Data Values OptionalRequired

ReinforcingMarkVerticalBarsHorizontalBarsVerticalBarsPerFaceVerticalBarLocationCrossTies

ZoneVerticalBarsAlongLengthStartZoneVerticalBarAlongThicknessStartZoneVerticalBarTiesByZoneStart

ZoneVerticalBarsAlongLengthEndZoneVerticalBarAlongThicknessEndZoneVerticalBarTiesByZoneEnd

VerticalBarSpliceType

ReinforcingStandardDetailsDetail to define IF/OF when applicable

W3#6@12 (EF or C)#5@8 (EF or C)#6@8-(I.F).;#5@12-(O.F.)Outside or Inside4@12Vx24H

5-#8x24 3-#86-#3@6, #3@12, 6-#3@6

5-#8x24 3-#86-#3@6, #3@12, 6-#3@6

Tangential, Radial, Bearing, Mechanical

Linked File

RequiredRequiredRequiredOptionalOptionalOptional

Optional

Optional

Optional

Required


WallPset_ACI_WallDesignIntentReinforcing property set data

Wall

Examples of Linked Files for Wall R/F Layout Details

Wall – BIM Object Data Example – Autodesk Revit


Slab Area element defined by a surface and thickness, spanning at a floor

IfcSlabStandardCase (for a planar surface extruded to a constant thickness) new IFC4IfcSlab (all others)




ElementAttributes


Geometry, Thickness and Position

Support for any arbitrary closed planar shape extruded to constant thickness


One-WaySlab

ConcreteGeometry

Proposed Reinforcement Data Label Possible Data Values

From Structural BIM ReinforcingMarkSpanTypeTopBarsInSpanDirection_BothEndsContinuousTopBarsInSpanDirection_OneEndDisContinuousTopBarsInSpanDirection_BothEndsDisContinuousBotBarsInSpanDirection_BothEndsContinuousBotBarsInSpanDirection_OneEndDisContinuousBotBarsInSpanDirection_BothEndsDisContinuousTopTemperatureBarsBotTemperatureBarsReinforcingStandardDetails

S3One-Way#4@12#4@8#4@12#4@12#4@8#4@12#4@12#4@12Linked File


One-WaySlab

Pset_ACI_OneWaySlabDesignIntentReinforcing property set data

One-Way SlabIssue:Typical SE Practice - Slab Mark is an Annotations placed on the Drawing and not associated with the 3D Slab Object.This will likely require R/F Detailer to:• Break the large slab into Segments• Assign R/F Mark and Span Direction to those Slab segmentsFor the One-Way Slab, which doesn't change span directions/marks that often, this may be practical?

Proposed Reinforcement Data Label Possible Data Values

SlabDesignIntentReinforcingMarkSlabStructuralSpanTypeTwoWaySlab_Top_CS_EndSpanTwoWaySlab_Top_CS_MidSpanTwoWaySlab_Top_CS_InteriorSpanTwoWaySlab_Bot_CS_EndSpanTwoWaySlab_Bot_CS_MidSpanTwoWaySlab_Bot_CS_InteriorSpan

TwoWaySlab_Top_MS_EndSpanTwoWaySlab_Top_MS_MidSpanTwoWaySlab_Top_MS_InteriorSpanTwoWaySlab_Bot_MS_EndSpanTwoWaySlab_Bot_MS_MidSpanTwoWaySlab_Bot_MS_InteriorSpanSlabReinforcingStandardLayoutDetail

S2Two-Way16-#5-21-#6-#17-#5-

16-#5-21-#6-#17-#5-Linked File


Two-Way SlabIssue:Typical SE Practice - Slab Marks are Annotations placed on the Drawing and not associated with the 3D Slab Object.

This would require R/F Detailer to:• Break the large slab into Segments as shown below• Assign R/F Mark and Span Direction to those Slab segmentsFor the Complex R/F of a Two-Way Slab, this may not be practical?

Spread Footing



Spread Footing Discrete horizontal slab-like element, supporting one of more columns or walls

IfcFooting (with PredefinedType of “PAD_FOOTING”


Concrete Concrete Material Specification

IfcMaterial with Pset_ACI_ConcreteMaterial

Reinforcement Reinforcing Material Specification

IfcMaterial with Pset_ACI_ReinforcingMaterial

ElementAttributes


Geometry Rectangular Profile of Dimensions A and B in Plan with Thickness, H, extruded along vertical axis


Spread Footing


ConcreteGeometry

Concrete ReinforcingData Label

PossibleData Values

OptionalRequired

From Structural BIM (Defined A x B x H ( Thickness)

ReinforcingMarkTopBarsAlongDimATopBarsAlongDimBBotBarsAlongDimABotBarsAlongDimBSideBarsEachFaceTopBarsHookedBotBarsHookedReinforcingStandardDetails

FT110-#610-#812-#8 12-#8 2-#6True/FalseTrue/FalseProject Linked File

RequiredRequiredRequiredRequiredRequiredRequiredRequiredRequiredRequired

Pset_ACI_SpreadFootingDesignIntentReinforcing property set data

Strip Footing


Strip Footing Continuous horizontal slab-like element, supporting one of more columns or walls

IfcFooting (with PredefinedType of “STRIP_FOOTING”






ElementAttributes


Geometry Rectangular Profile of Width, W x Thickness, H, extruded along a horizontal axis.

IfcMaterialProfileSetUsage(new in IFC 4)

Strip Footing Concrete

Geometry Concrete Reinforcing

Data LabelPossible


From Structural BIM (Defined W (width) x H (Thick)

ReinforcingMarkTopBarsContinuousBotBarsContinuousTopBarsTransverseBotBarsTransverseSideBarsEachFaceTopBarsHookedBotBarsHooked

ReinforcingStandardDetails

SF110-#610-#8#6@12 #8@12 2-#6True/FalseTrue/False

Project Linked File

RequiredRequiredRequiredRequiredRequiredRequiredRequiredRequired

Required

Pset_ACI_StripFootingDesignIntentReinforcing property set data

Pile/Pier Cap



Pile (Pier) Cap Discrete horizontal slab-like element, supporting one of more columns or walls

IfcFooting (with PredefinedType of “PILE_CAP”






ElementAttributes


Geometry Rectangular Profile of Dimensions A and B in Plan with Thickness, H, extruded along vertical axis


Pier Cap


ConcreteGeometry

Concrete ReinforcingData Label

PossibleData Values

OptionalRequired

From Structural BIM (Defined A x B x H ( Thickness)

ReinforcingMarkBotBarsTypeABotBarsTypeBTopBarsTypeCTopBarsTypeDSideBarsEachFaceTopBarsHookedBotBarsHookReinforcingStandardDetails

PC110-#610-#812-#8 12-#8 3-#6True/FalseTrue/FalseProject Linked File

RequiredRequiredRequiredRequiredRequiredRequiredRequiredRequiredRequired

Pset_ACI_PileCapDesignIntentReinforcing property set data


Drilled Pier Discrete element vertical or inclined carrying load to the soil or a deep bearing strata

IfcPile






ElementAttributes




IfcMaterialProfileSetUsage(New in IFC4)

Drilled Pier

Sample Standard Reinforcing Layout Details

Drilled PierConcrete

Geometry Concrete Reinforcing

Data LabelPossible


From Structural BIM (Defined Shape, Size and Strength)

ReinforcingMarkTotalVerticalBarsVerticalBarsPerBundleTiesByZoneTieNumberSetsTieLayoutTypeTieLayoutDetailVerticalBarSpliceType

ReinforcingStandardDetails

P110-#80 No Bundle, else 2, 3, etc.16-#4@6, R-#4@121 (Do we need this?)Circular, SpiralLinked FileTangential, Radial, Bearing, MechanicalProject Linked File

RequiredRequiredOptionalRequiredOptionalRequiredRequiredRequired

Required

Pset_ACI_DrilledPierDesignIntentReinforcing property set data

em-6 structural design model – scope of exchange

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