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1、ACI 332M-08 Reported by ACI Committee 332 Code Requirements for Residential Concrete and Commentary An ACI Standard Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=HP Monitoring/1111111164 Not for Resale, 02/01/2009 01:17:53 MSTNo reproduction or networking perm
2、itted without license from IHS -,-,- Code Requirements for Residential Concrete and Commentary ISBN 978-0-87031-302-8 American Concrete Institute Advancing concrete knowledge Copyright by the American Concrete Institute, Farmington Hills, MI. All rights reserved. This material may not be reproduced
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8、ing without limitation, lost revenues or lost profits, which may result from the use of this publication. It is the responsibility of the user of this document to establish health and safety practices appropriate to the specific circumstances involved with its use. ACI does not make any representati
9、ons with regard to health and safety issues and the use of this document. The user must determine the applicability of all regulatory limitations before applying the document and must comply with all applicable laws and regulations, including but not limited to, United States Occupational Safety and
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11、y revised ACI Manual of Concrete Practice (MCP). American Concrete Institute 38800 Country Club Drive Farmington Hills, MI 48331 U.S.A. Phone:248-848-3700 Fax:248-848-3701 www.concrete.org Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=HP Monitoring/1111111164
12、Not for Resale, 02/01/2009 01:17:53 MSTNo reproduction or networking permitted without license from IHS -,-,- ACI 332M-08 supersedes 332-04, became effective May 19, 2008, and was published September 2008. Copyright 2008, American Concrete Institute. All rights reserved including rights of reproduct
13、ion and use in any form or by any means, including the making of copies by any photo process, or by electronic or mechanical device, printed, written, or oral, or recording for sound or visual reproduction or for use in any knowledge or retrieval system or device, unless permission in writing is obt
14、ained from the copyright proprietors. 332M-1 Code Requirements for Residential Concrete and Commentary An ACI Standard Reported by ACI Committee 332 ACI 332M-08 The code portion of this document covers the design and construction of cast-in-place concrete one- and two-family dwellings and multiple s
15、ingle- family dwellings (townhouses), and their accessory structures. Among the subjects covered are the design and construction requirements for plain and reinforced concrete footings, foundation walls, and slabs-on- ground, and requirements for concrete, reinforcement, forms, and other related mat
16、erials. The quality and testing of materials used in this document are covered by reference to the appropriate ASTM standards. The code is written in a format that allows adoption by reference in a general building code without change to its language. Background details or suggestions for carrying o
17、ut the requirements or intent of the code portion are not included. The commentary is provided for this purpose. The commentary discusses some of the considerations of the committee in developing the code portion with emphasis given to the explanation of provisions that may be unfamiliar to code use
18、rs or where significant departure exists from other concrete codes. Commentary provisions begin with an “R,” such as “R1.1.1,” and are shown in italics. References to relevant resource documents are cited for the user who desires to study individual issues in greater detail. Keywords: admixtures; ag
19、gregates; air entrainment; anchorage (structural); backfill; building codes; calcium chloride; cements; cold weather construc- tion; compressive strength; concrete; concrete construction; concrete slabs; construction joints; contraction joints; cover; curing; fiber reinforcement; flexural strength;
20、floors; footings; formwork (construction); foundations; foundation walls; hot weather construction; inspection; loads (forces); materials; mixing; mixture proportioning; placing; plain concrete; reinforced concrete; reinforcing steels; residential; serviceability; slab-on-ground; specifications; str
21、ength; structural analysis; structural concrete; structural design; sulfates exposure; walls; water; welded wire reinforcement. CONTENTS Chapter 1General, p. 332M-2 1.1Scope 1.2Alternative systems 1.3Footings and foundation walls 1.4Drawings and specifications 1.5Inspection Chapter 2Notation and def
22、initions, p. 332M-3 2.1Notation 2.2Definitions Chapter 3Materials, p. 332M-5 3.1Concrete 3.2Reinforcement 3.3Formwork Chapter 4Concrete requirements, p. 332M-5 4.1General requirements 4.2Concrete properties 4.3Concrete cover 4.4Calcium chloride Brent D. AndersonThomas L. CarterSaid IravaniT. George
23、Muste Robert B. AndersonMichael W. CookRaj K. JallaRoyce J. Rhoads William L. ArentJerry D. CoombsKirby JustesenJames Rogers Joseph S. BalikBarry A. DescheneauxTarek S. KhanJ. Edward Sauter Robert T. BartleyNader R. ElhajjRichard KinchenRobert E. Sculthorpe Claude J. BergeronRobert L. HenryJoseph Kn
24、arichMichael H. Weber Glen E. BollinBarry HerbertLionel A. LemayKevin D. Wolf Kenneth B. BondyScott R. HumphreysWarren E. McPherson, Jr.Carla V. Yland Morris “Skip” Huffman Chair James R. Baty, II Secretary Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=HP Moni
25、toring/1111111164 Not for Resale, 02/01/2009 01:17:53 MSTNo reproduction or networking permitted without license from IHS -,-,- 332M-2ACI STANDARD Chapter 5Concrete production and placement, p. 332M-7 5.1Concrete 5.2Placement 5.3Form removal 5.4Cold weather 5.5Hot weather Chapter 6Footings, p. 332M-
26、8 6.1General 6.2Design 6.3Construction Chapter 7Foundation walls, p. 332M-11 7.1General 7.2Design 7.3Construction Chapter 8Slabs-on-ground, p. 332M-14 8.1Design 8.2Support 8.3Forms 8.4Thickness 8.5Joints 8.6Reinforcement 8.7Curing Chapter 9References, p. 332M-15 9.1Referenced standards/R9.1Commentar
27、y references Appendix APrescriptive tables for foundation walls, p. 332M-18 CHAPTER 1GENERAL 1.1Scope 1.1.1 This code, when legally adopted as part of a general building code, provides minimum requirements for design and construction of residential concrete elements. In areas without a legally adopt
28、ed building code, this code defines minimum acceptable standards of design and construction practice. R1.1.1 The user of this document should consult the applicable general building code for all applied loads to determine the applicable values for design requirements. In the absence of a governing c
29、ode, the user should consider the use of ASCE/SEI 7 to determine applicable loads. 1.1.2 This code supplements the general building code and governs matters pertaining to design and construction of cast-in-place concrete construction for one- and two-family dwellings and multiple single-family dwell
30、ings (townhouses), and their accessory structures, except wherever this code is in conflict with requirements in the legally adopted general building code. 1.1.3 This code shall govern in all matters pertaining to design, construction, and material properties where this code is in conflict with requ
31、irements contained in other standards referenced in this code. 1.1.4 This code is limited to design and construction of concrete footings, including thickened slab footings, wall footings, and isolated footings; concrete basement or foundation walls constructed with removable forms or with flat insu
32、lating concrete forms; and concrete slabs-on-ground. R1.1.4 The design and construction requirements for footings, foundation walls, and slabs-on-ground are included in this code, together with requirements for concrete, reinforcement, forms, and other related materials. 1.1.5 This code does not gov
33、ern design and construction of: insulating concrete form walls with a waffle or screen configuration; precast wall elements; above-grade concrete walls; deep foundation systems (such as piles, drilled piers, or caissons); post-tensioned slabs-on-ground; and elevated concrete slabs. R1.1.5 Provisions
34、 for application of precast wall elements can be found in the 2003 International Residential Code (IRC) and other publications. The provisions for above- grade concrete walls are currently available in other industry references. Guidance on the requirements for post- tensioned slabs-on-ground can be
35、 found in the Post-Tensioning Institutes “Design and Construction of Post-Tensioned Slabs-on-Ground.” 1.1.6 This code does not govern the design and application of systems for surface drainage, waterproofing, damp- proofing, and the ventilation of radon gases. R1.1.6 Guidance on the type and applica
36、tion of systems for drainage, waterproofing, and dampproofing, as well as for radon gas ventilation systems, are commonly found in the general building code. 1.2Alternative systems Sponsors of any system of design or construction or an alternative material to be applied within the scope of this code
37、, the adequacy of which has been shown by successful use or by analysis or test, but which does not conform to or is not covered by this code, shall have the right to present the data on which their design is based to the building official or to a board of examiners appointed by the building officia
38、l. This board shall have authority to investigate the data so submitted, to require tests, and to formulate rules governing design and construction of such systems to meet the intent of this code. These rules, when approved by the building official and promulgated, shall be of the same force and eff
39、ect as the provisions of this code. R1.2 New methods of design, new materials, and new uses of materials should undergo a period of development before being specifically covered in a code. Hence, good systems or components might be excluded from use by implication if means were not available to obta
40、in acceptance. For systems considered under this section, specific tests, load factors, deflection limits, and other pertinent requirements should be set by the board of examiners, and should be consistent with the intent of the document. 1.3Footings and foundation walls The design and construction
41、of concrete footings and foundation walls shall be in accordance with the provisions of Chapters 6 and 7, respectively. 1.3.1 Seismic designThe seismic risk level of a region, or seismic performance or design category of a structure, shall Copyright American Concrete Institute Provided by IHS under
42、license with ACI Licensee=HP Monitoring/1111111164 Not for Resale, 02/01/2009 01:17:53 MSTNo reproduction or networking permitted without license from IHS -,-,- CODE REQUIREMENTS FOR RESIDENTIAL CONCRETE332M-3 be regulated by the legally adopted general building code, of which this code forms a part
43、, or determined by local authority. 1.4Drawings and specifications All designs for cast-in-place concrete construction not covered by the design provisions or prescriptive tables of this code shall require the seal of a licensed design professional. 1.5Inspection The construction of all concrete ele
44、ments covered by this code shall be inspected as required by the legally adopted general building code. CHAPTER 2NOTATION AND DEFINITIONS 2.1Notation db=diameter of steel reinforcing bar, mm fc=specified compressive strength of concrete, MPa Mn=nominal moment strength at section, Nm S=elastic sectio
45、n modulus of cross section, mm3 2.2Definitions The following terms are defined. Commentary is given in italics. admixturea material other than water, aggregates, cementitious materials, and fiber reinforcement, used as an ingredient of a cementitious mixture to modify its freshly mixed, setting, or
46、hardened properties and that is added to the batch before or during its mixing. admixture, water-reducingan admixture that either increases slump of freshly mixed mortar or concrete without increasing water content or maintains slump with a reduced amount of water, the effect being due to factors ot
47、her than air entrainment. admixture, water-reducingthe type and performance of water-reducing admixtures are selected based on the intended application and include both high-range (HRWRA) and mid-range (MRWRA). Water-reducing admixtures result in large to moderate water reductions in mixtures while
48、maintaining greater flowability without causing undue set retardation or air entrainment. air entrainmentthe incorporation of air in the form of microscopic bubbles (typically smaller than 1 mm) during the mixing of either concrete or mortar. air entrainmentair entrainment should not be considered a
49、s a substitute for water reduction. An important aspect of air entrainment is the uniform distribution of air bubbles to provide resistance to damage due to freezing and thawing. allowable bearing capacitythe maximum pressure to which a soil or other material should be subjected to guard against shear failure or excessive settlement. backfillsoil, aggrega