530/530.1-08: Building Code Requirements and Specification for Masonry Structures and Related Commentaries

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The "Building Code Requirements for Masonry Structures (TMS 402-08/ACI 530-08/ASCE 5-08)" covers the design and construction of masonry structures. It is written in such form that it may be adopted by reference in a legally adopted building code.

Among the subjects covered are: definitions, contract documents, quality assurance, materials, placement of embedded items, analysis and design, strength and serviceability, flexural and axial loads, shear, details and development of reinforcement, walls, columns, pilasters, beams and lintels, seismic design requirements, glass unit masonry, and veneers. An empirical design method applicable to buildings meeting specific location and construction criteria are also included.

The "Specification for Masonry Structures (TMS 602-08/ACI 530.1-08/ASCE 6-08)" is a reference specification and is required by "Building Code Requirements for Masonry Structures (TMS 402-08/ACI 530-08/ASCE 5-08)" to specify materials, labor, and construction. Thus, this specification covers minimum construction requirements for masonry in structures. Included are quality, inspection, testing, and placement of materials; the placing, bonding, and anchoring of masonry; and the placement of grout and reinforcement. This specification is intended to be referenced in the project specifications. Individual project requirements may supplement the provisions of this specification.

Reported by the Masonry Standards Joint Committee (MSJC) consisting of TMS Committees 402 and 602, ACI Committees 530 and 530.1, and ASCE Committees 5 and 6.

** Previous 530 codes are also available. For more information search Inactive documents in the drop down menu**


Document Details

Author: ACI Committee 530

Publication Year: 2008

Pages: 236

ISBN: 9780870314735

Categories: Codes

Formats: Printed Document or Protected PDF/Web View

This document is Historical

Table of Contents

Chapter 1 General Design Requirements for Masonry

1.1 Scope

1.1.1 Minimum requirements

1.1.2 Governing building code

1.1.3 Design procedures

1.1.4 SI equivalents

1.2 Contract documents and calculations

1.3 Approval of special systems of design or construction

1.4 Standards cited in this Code

1.5 Notation

1.6 Definitions

1.7 Loading

1.7.1 General

1.7.2 Load provisions

1.7.3 Lateral load resistance

1.7.4 Load transfer at horizontal connections

1.7.5 Other effects

1.7.6 Lateral load distribution

1.8 Material Properties

1.8.1 General

1.8.2 Elastic moduli

1.8.3 Coefficients of thermal expansion

1.8.4 Coefficients of moisture expansion for clay masonry

1.8.5 Coefficients of shrinkage

1.8.6 Coefficients of creep

1.8.7 Prestressing steel

1.9 Section properties

1.9.1 Stress computations

1.9.2 Stiffness

1.9.3 Radius of gyration

1.9.4 Intersecting walls

1.9.5 Bearing area

1.9.6 Effective compressive width per bar

1.9.7 Concentrated loads

1.10 Connection to structural frames

1.11 Stack bond masonry

1.12 Corbels

1.12.1 Loadbearing corbels

1.12.2 Non-loadbearing corbels

1.13 Beams

1.13.1 Span length

1.13.2 Lateral support

1.13.3 Deflections

1.14 Columns

1.14.1 General column design

1.14.2 Lightly loaded columns

1.15 Details of reinforcement and metal accessories

1.15.1 Embedment

1.15.2 Size of reinforcement

1.15.3 Placement of reinforcement

1.15.4 Protection of reinforcement and metal accessories

1.15.5 Standard hooks

1.15.6 Minimum bend diamter for reinforcing bars

1.16 Anchor bolts

1.16.1 Placement

1.16.2 Projected area for axial tension

1.16.3 Projected area for shear

1.16.4 Effective embedment length for headed anchor bolts

1.16.5 Effective embedment length of bent-bar anchor bolts

1.16.6 Minimum permissibale effective embedment length

1.16.7 Anchor bold edge distance

1.17 Seismic design requirements

1.17.1 Scope

1.17.2 General analysis

1.17.3 Element Classification

1.17.4 Seismic Design Category requirements

1.18 Quality Assurance Program

1.18.1 Level A Quality Assurance

1.18.2 Level B Quality Assurance

1.18.3 Level C Quality Assurance

1.18.4 Procedures

1.18.5 Qualifications

1.18.6 Acceptance relative to strength requirements

1.19 Construction

1.19.1 Grouting, minimum spaces

1.19.2 Embedded conduits, pipes, and sleeves

Chapter 2 Allowable Stress Design of Masonry

2.1 General

2.1.1 Scope

2.1.2 Load combinations

2.1.3 Design Strength

2.1.4 Anchor bolts embedded in grout

2.1.5 Multywythe walls

2.1.6 Columns

2.1.7 Pilasters

2.1.8 Concentrated loads

2.1.9 Development of reinforcement embedded in grout

2.2 Unreinforced masonry

2.2.1 Scope

2.2.2 Stresses in reinforcement

2.2.3 Axial compression and flexure

2.2.4 Axial tension

2.2.5 Shear

2.3 Reinforced masonry

2.3.1 Scope

2.3.2 Steel reinforcement - allowable stresses

2.3.3 Axial compression and flexure

2.3.4 Axial tension and flexural tension

2.3.5 Shear

Chapter 3 Strength Design of Masonry

3.1 General

3.1.1 Scope

3.1.2 Required strength

3.1.3 Design strength

3.1.4 Strength reduction factors

3.1.5 Deformation requirements

3.1.6 Anchor bolts embedded in grout

3.1.7 Nominal bearing strength

3.1.8 Material properties

3.2 Unreinforced (plain) masonry

3.2.1 Scope

3.2.2 Flexural and axial strength of unreinforced (plain) masonry members

3.2.3 Axial tension

3.2.4 Nominal shear strength

3.3 Reinforced masonry

3.3.1 Scope

3.3.2 Design assumptions

3.3.3 Reinforcement requirements and details

3.3.4 Design of beams, piers, and columns

3.3.5 Wall design for out-of-plane loads

3.3.6 Wall design for in-plane loads

Chapter 4 Prestressed Masonry

4.1 General

4.1.1 Scope

4.2 Design methods

4.2.1 General

4.2.2 After Transfer

4.3 Permissible stresses in prestressing tendons

4.3.1 Jacking force

4.3.2 Immediately after transfer

4.3.3 Post-tensioned masonry members

4.3.4 Effective prestress

4.4 Axial compression and flexure

4.4.1 General

3.3.2 Service load requirements

4.4.3 strength requirements

4.5 Axial tension

4.6 Shear

4.7 Deflection

4.8 Prestressing tendon anchorages, couplers, and end blocks

4.8.4 Bearing stresses

4.9 Protection of prestressing tendons and accessories

4.10 Developement of prestressing tendons and accessories

Chapter 5 Empirical Design of Masonry

5.1 General

5.1.1 Scope

5.1.2 Limitations

5.2 Height

5.3 Lateral stability

5.3.1 Shear walls

5.3.2 Roofs

5.4 Compressive stress requirements

5.4.1 Calculations

5.4.2 Allowable compressive stresses

5.5 Lateral Support

5.5.1 Maximum l/t and h/t

5.5.2 Cantilever walls

5.5.3 Support elements

5.6 Thickness of masonry

5.6.1 General

5.6.2 Minimum thickness

5.6.3 Foundations walls

5.6.4 Parapet walls

5.7 Bond

5.7.1 General

5.7.2 Bonding with masonry headers

5.7.3 Bonding with wall ties of joint reinforcement

5.7.4 Natural or cast stone

5.8 Anchorage

5.8.1 General

5.8.2 Intersecting walls

5.8.3 Floor and roof anchorage

5.8.4 Walls adjoining structural framing

5.9 Miscellaneous requirements

5.9.1 Chases and recesses

5.9.2 Lintels

5.9.3 Support on wood

Chapter 6 Veneer

6.1 General

6.1.1 Scope

6.1.2 Design of anchored veneer

6.1.3 Design of adhered veneer

6.1.4 Dimension stone

6.1.5 Autoclaved aerated concrete masonry veneer

6.1.6 General design requirements

6.2 Anchored veneer

6.2.1 Alternative design of anchored masonry veneer

6.2.2 Prescriptive requirements for anchored masonry veneer

6.3 Adhered Veneer

6.3.1 Alternative design of adhered masonry veneer

6.3.2 Prescriptive requirements for adhered masonry veneer

Chapter 7 Glass Unit Masonry

7.1 General

7.1.1 Scope

7.1.2 General Design Requirements

7.1.3 Units

7.2 Panel Size

7.2.1 Exterior standard-unit panels

7.2.2 Exterior thin-unit panels

7.2.3 Interior panels

7.2.4 Curved panels

7.3 Support

7.3.1 General requirements

7.3.2 Vertical

7.3.3 Lateral

7.4 Expansion joints

7.5 Base surface treatments

7.6 Mortar

7.7 Reinforcement

Appendix A Strength Design of Autoclaved Aerated Concrete (AAC) Masonry

A.1 General

A1.1 Scope

A1.2 Required strength

A1.3 Design Strength

A1.4 Strength of Joints

A1.5 Strength-reduction factors

A1.6 Deformation requirements

A1.7 Anchor bolts

A1.8 Material properties

A1.9 Concentrated loads

A2 Unreinforced (plain) AAC masonry

A2.1 Scope

A2.2 Flexureal strength of unreinforced (plain) AAC masonry members

A2.3 Nominal axial strength of unreinforced (plain) AAC masonry members

A2.4 Axial tension

A2.5 Nominal shear strength of unreinforce (plain) AAC masonry members

A2.6 Flexural cracking

A3 Reinforced AAC masonry

A3.1 Scope

A3.2 Design assumptions

A3.3 Reinforcement requirements and details

A3.4 Design of beams, piers, and columns

A3.5 Wall design for out-of-plane loads

A3.6 Wall design for in-plane loads


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