ACI PRC-131.2-24: Use of Industry Foundation Classes in Exchange of Reinforcement Models—Guide

Description

This guide provides a protocol for the exchange of data related to concrete reinforcement between software applications. This guide presents a human-readable list of concrete reinforcement entities, attributes, property sets, and relationships, with sufficient specificity so that the format and syntax for machine-readable exchanges based on Industry Foundation Classes (IFCs) can be employed, enhanced, or developed. This specific set of exchange requirements is referred to as a model view definition (MVD). Material and geometric attributes, property sets, and relationships, both required and optional, that address the requirements of most reinforced concrete applications for buildings and nonbuilding structures are presented. This guide is intended to be used by building information modeling (BIM) software developers to assist in the development of consistent and accurate exchanges of concrete reinforcement information between applications.

Keywords:

attribute; building information modeling; Industry Foundation Classes; model view definition; post-tensioning tendon; reinforcing bar.

Document Details

Author: ACI Committee 131

Publication Year: 2024

Pages: 49

ISBN: 9781641952811

Formats: Protected PDF/Web View

Table of Contents

CHAPTER 1—INTRODUCTION AND SCOPE, p. 2

1.1—Introduction, p. 2

1.2—Scope, p. 3

1.3—Changes from ACI 131.2R-17, p. 3

CHAPTER 2—DEFINITIONS, p. 3

CHAPTER 3—REVIEW OF INDUSTRY FOUNDATION CLASSES CONCEPTS, p. 4

3.1—Industry Foundation Classes, p. 4

3.2—Entities and occurrences, p. 4

3.3—Attributes, p. 4

3.4—Property sets, p. 5

3.5—Relationships, p. 5

3.6—Entity diagrams, p. 5

CHAPTER 4—COMMON MODELING REQUIREMENTS, p. 5

4.1—General, p. 5

4.2—IfcRoot attributes, p. 5

4.3—Status and level of development, p. 5

4.4—IfcProduct, ObjectPlacement, and IfcRelContainedInSpatialStructure, p. 5

4.5—IfcTypeProduct and IfcProduct (shared geometry), p. 6

4.6—IfcTypeProduct and IfcProduct (unique geometry), p. 6

CHAPTER 5—PROJECT, SITE, AND BUILDING, p. 7

5.1—Conceptual modeling, p. 7

5.2—IfcProject, p. 7

5.3—IfcSite, p. 8

5.4—IfcBuilding, p. 8

5.5—File header, p. 9

CHAPTER 6—REINFORCEMENT MATERIAL MODELING, p. 9

6.1—Conceptual modeling, p. 9

6.2—IfcMaterial for reinforcing bars and reinforcing mesh, p. 9

6.3—IfcMaterial for tendons, p. 10

7.1—Conceptual modeling, p. 11

7.2—IfcReinforcingBarType, p. 11

7.3—IfcReinforcingBar, p. 16

CHAPTER 8—WELDED-WIRE REINFORCEMENT MODELING, p. 20

8.1—Conceptual modeling, p. 20

8.2—IfcReinforcingMeshType, p. 20

8.3—IfcReinforcingMesh, p. 20

CHAPTER 9—BAR COUPLER MODELING, p. 22

9.1—Conceptual modeling, p. 22

9.2—IfcMechanicalFastenerType, p. 22

9.3—IfcMechanicalFastener, p. 23

9.4—Coupler modeling when one bar is out of the model, p. 24

CHAPTER 10—BAR TERMINATOR MODELING, p. 24

10.1—Conceptual modeling, p. 24

10.2—IfcDiscreteAccessoryType, p. 25

10.3—IfcDiscreteAccessory, p. 25

CHAPTER 11—ACCESSORY MODELING, p. 26

11.1—Conceptual modeling, p. 26

11.2—IfcDiscreteAccessoryType, p. 26

11.3—IfcDiscreteAccessory, p. 28

CHAPTER 12—MODELING POST-TENSIONING, p. 28

12.1—Introduction, p. 28

12.2—Modeling of complete tendons, p. 28

12.3—Simplified modeling of tightly-sheathed tendons, p. 29

12.4—Configuration to model, p. 29

CHAPTER 13—POST-TENSIONING STRAND MODELING, p. 30

13.1—Conceptual modeling, p. 30

13.2—IfcTendonType, p. 31

13.3—IfcTendon, p. 31

13.4—Considerations for non-horizontal members, p. 31

CHAPTER 14—POST-TENSIONING DUCT MODELING, p. 32

14.1—Conceptual modeling, p. 32

14.2—IfcTendonConduitType, p. 32

14.3—IfcTendonConduit, p. 35

CHAPTER 15—POST-TENSIONING ANCHOR MODELING, p. 35

15.1—Conceptual modeling, p. 35

15.2—IfcTendonAnchorType, p. 35

15.3—IfcTendonAnchor, p. 37

CHAPTER 16—POST-TENSIONING ASSEMBLY MODELING, p. 37

16.1—Conceptual modeling, p. 37

16.2—Tendon assemblies, p. 38

16.3—Tendon bundles, p. 38

CHAPTER 17—CALLOUTS AND ASSEMBLIES OF REINFORCEMENT AND ACCESSORIES, p. 39

17.1—Conceptual modeling, p. 39

17.2—IfcElementAssembly for bar callouts, p. 40

17.3—IfcElementAssembly for reinforcement assemblies, p. 41

CHAPTER 18—BAR BUNDLE AND RELEASE MODELING, p. 41

18.1—Conceptual modeling, p. 41

18.2—IfcGroup for bar bundles, p. 42

18.3—IfcGroup for releases, p. 43

CHAPTER 19—TENDON RELEASE MODELING, p. 44

19.1—Conceptual modeling, p. 44

19.2—IfcGroup for releases, p. 44

CHAPTER 20—SUPPLEMENTAL DATA, p. 46

20.1—Purpose of supplemental data, p. 46

20.2—Human consumption, p. 46

20.3—Consuming future versions of ACI PRC-131.2, p. 46

20.4—Expectations and requirements for consuming applications, p. 46

CHAPTER 21—REFERENCES, p. 46

Authored documents, p. 46

APPENDIX A—EXAMPLE, p. 47

A.1—Selected example file, p. 47

A.2—Example file contents and format, p. 47

ERRATA INFO

Any applicable errata are included with individual documents at the time of purchase. Errata are not included for collections or sets of documents such as the ACI Collection. For a listing of and access to all product errata, visit the Errata page.

Return/Exchange Policy

Printed / Hard Copy Products: The full and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. A 20% service charge applies. Return shipping fees are the customer’s responsibility.

Electronic /Downloaded Products & Online Learning Courses: These items are not eligible for return.

Subscriptions These items are not eligible for return.

Exchanges: Contact ACI’s Customer Services Department for options (+1.248.848.3800 – ACICustomerService@concrete.org).