The wall is also 34 out of true at each end of a 30 straight edge. The indicated tolerances govern unless otherwise specified. Section 4 is the longest part of aci 117, covering tolerances for castinplace concrete for buildings, including walls, floors, and slabs. Aci 117 is the industry standard for the use of the fnumber system and establishes the fnumbers of different types of floors as well as the definitions of acceptable variances. Tolerances for the floors placed on these suspended systems are often misunderstood.
Concrete slab finishes and the use of fnumber system. Standard specifications for tolerances for concrete construction and materials aci 11790 reported 1172 manual of concrete. These tolerances require monitoring to construct the structure as designed. Sep 11, 2017 save this book to read aci 117 10 specification for tolerances concrete pdf ebook at our online library. Standards and specifications when specifying tolerances for concrete work, reference is often made to the australian. The challenge facing the designconstruction team is to identify and remove conflicts prior to construction. Code and standards requirements for acceptance testing. Aci 117 10 specification for tolerances concrete by. Where aci 318 and 301 are in use, aci 117 is the controlling tolerance document unless other tolerances are specified in the contract documents. This report is a commentary on the specifications for tolerances for concrete construction and materials aci 117. Examples aci 117 placement of nonprestressed reinforcement, measured from form surface.
What is an acceptable tolerance for topofwall elevation. Specification for tolerances for concrete construction and materials aci 117 10 and commentary aci 117r10 this specification designates standard tolerances for concrete construction. The dispute arises from differing tolerances for anchor bolt placement given by the concrete industry in aci 11790, standard specifications for tolerances for concrete construction and materials, and by the steel industry in the aisc code of standard. Specification for tolerances for concrete construction and materials aci 11710 and commentary aci 117r10. Aci 117 specification for tolerances for concrete construction. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design.
Materials that interface with or connect to concrete elements may have tolerance requirements that are not compatible with those contained in this document. The variation from the straightedge is typically expressed as a maximum deviation value over the straightedge length but can be assessed by the method provided in aci 1174. This specification provides standard tolerances for concrete. Aci 347r14 describes four categories of formed concrete surfaces, same as in aci 117tolerances aci 303r12 addresses architectural concrete ascc educational and training committee uses samples to illustrate expectations no longer available aci 309r05 provides information on consolidation of concrete and visible effects. Aci 11710 specification for tolerances for concrete construction. Correlation between division 3 floor flatness ff and. This guide lists industrystandard tolerances and presents recommendations for mitigating tolerance conflicts related to embedded items, elevator cores and hoistways, openings in slabs and walls, manufactured couplers and splicing systems for reinforcing \ bars, stairs, cladding. The committee has developed standard tolerances for concrete construction materials.
The standard also suggests other tolerances not published here for precast and precastprestressed members, mass concrete structures, tunnel linings and castinplace conduits, slipformed structures, canal linings, siphons, culverts, bridges and similar structures. Cement and concrete terminology, by american concrete institute. Tolerances for concrete construction tolerances for. Specification for tolerances for concrete construction and. Aci tolerances for fabricated reinforcing bars have been developed by crsi. Aci 11790, standard specifications for tolerances for concrete construction and materials, gives only two tolerances for these applications. History of aci 117 tolerance 1990 aci adopts standard specification for tolerances for concrete construction 2006 aci 117 06 document was published. The institute publishes more than 400 technical standards, reports and manuals on testing, inspection, cracking and. Plain and reinforced concrete specification may 2017 process industry practices page 5 of 16 concrete structures in concrete documents, any placement of concrete.
Aci committee 117, specifications for tolerances for concrete construction and materials and commentary aci 117 10, american concrete institute, farmington hills, mi, 2010, 76 pp. Tolerances in this specification are for typical concrete construction and construction procedures and are applicable to exposed concrete and to architectural concrete. Specification for tolerances for concrete construction and materials aci 117 10 and commentary aci 117 10 aci committee 506 on. Click download or read online button to get aci 117 1r 14 guide for tolerance compatibility in concrete construction book now. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete.
Standard specifications for tolerances for concrete construction and materials aci 117 90, doesnt call out this tolerance very clearly. Movements that affect tolerance measurements, concrete international, aci, july 2016. I hesitate to make different tolerances since the industry prices work based on the state of the practice. Design chapter 17, anchoring to concrete, in aci 318141 provides design requirements for anchors in concrete used to. This guide lists industrystandard tolerances and presents recommendations for mitigating tolerance conflicts related to embedded items, elevator cores and hoistways, openings in slabs and walls, manufactured couplers and splicing systems for reinforcing \. Certain combinations of these result in conflicts and remediation that increases project costs. American concrete institute aci aci 117 specification for tolerances for concrete construction and materials and commentary. No structure is exactly level, plumb, straight, and true, so all construction and materials should be specified with tolerances limiting deviation from design values. Tolerance on topofwall elevation concrete construction. Examples aci 117 contd placement of prestressing reinforcement or prestressingducts horizontal deviation. The dispute arises from differing tolerances for anchor bolt placement given by the concrete industry in aci 117 90, standard specifications for tolerances for concrete construction and materials, and by the steel industry in the aisc code of standard. Pdf standard specifications for tolerances for concrete. This variation can usually be in either of two directions.
Other tolerances in this section dictate the maximum deviation from the planned location of the top surface elevation and the crosssectional dimensions of piers and footings. All recommendations are directed at constructability cost, jobsite safety, and schedule issues, not the structural capacity of the plate or anchors. The steel, precast erector, or both dictate the floor elevation relative to the design elevation. Aci 117m10 specification for tolerances for concrete construction and materials and commentary metric provides standard tolerances for concrete construction and materials. All acl tolerances are now being consolidated under the auspices of acl committee 117, tolerances. This is particularly critical when the embeds have very thick plates photo courtesy of bruce suprenant fig. Tolerances for concrete construction and materials shall conform to all requirements of aci 117, standard specifications for tolerances for concrete construction and materials, published by the american concrete institute, detroit, michigan. Jul 02, 2019 aci 11706 pdf read aci specifications for tolerances for concrete construction and materials and commentary by american concrete institute aci for free with a 30. Most aci standards and committee reports are gathered together in the annually revised aci manual of. Tolerances for concrete construction from aci 117 and other industry standards developed by trade and standards writing organizations are discussed. Aci 11710 specification for tolerances for concrete. Specification for tolerances for concrete construction and materials aci 117m10 and commentary. Aci 117 includes tolerances for fabrication, placement, cover, thickness, and elevation. This specification provides standard tolerances for concrete construction.
Tolerances for concrete foundation construction as per aci. Aci 117 specification for tolerances for concrete construction and. Constructability of embedded steel plates in castinplace. Anchor bolt tolerances american society of concrete. Can somebody let me know what the tolerances are for straightness, plumbness, and what i would describe as true the wall is bowed in the middle.
Dec 01, 2015 understanding aci 117 tolerance language. Even if the concrete contractor pours the concrete and finishes it to the specified floor flatness requirement, as stated in aci 117 specification for tolerances for concrete construction and materials, the f f. Aci 347r14 describes four categories of formed concrete surfaces, same as in aci 117 tolerances aci 303r12 addresses architectural concrete ascc educational and training committee uses samples to illustrate expectations no longer available aci 309r05 provides information on consolidation of concrete and visible effects. It is intended to be used with aci 117 for clarity of interpretation and insight into the intent of the committee regarding the application of the tolerances set forth therein. The need to specify tolerances from among the possible definitions of tolerance the one we have chosen to use in this article is given in cement and concrete terminology, by american concrete institute aci committee 116. Fresh concrete tests slump or slump flow tolerances in astm c94. Architectural precast concrete products was prepared by the pci plant certification subcommittee for plant production of architectural precast concrete products. The floor flatness report what the designer needs to know. This report is a commentary on the specification for tolerances for concrete construction and materials aci 117. This site is like a library, use search box in the widget to. Tolerances are typically divided into three primary categories. Section 4, castinplace concrete for buildings, doesnt mention walls. Aci 117 06 specifications for tolerances for concrete construction and materials and commentary mycivil.
The adjacent figure shows a birdbath at the valley of a slab surface profile under a 10 ft. This is an organisation of concrete contractors that outlines problems with what. Eliminating birdbaths would require zero tolerances. Aci 347 permitted a tolerance of 116 inch per foot3 in the slope of a floor but the investigators concluded that a more realistic tolerance might be tolerances suggested by aci for reinforced concrete buildings variations from the plumb. Jan 24, 2007 other tolerances in this section dictate the maximum deviation from the planned location of the top surface elevation and the crosssectional dimensions of piers and footings. The institute publishes more than 400 technical standards, reports and manuals on testing, inspection, cracking and failure, building code requirements, and related topics. Subsequent to the publication and use of the first edition, a plant certification program was established for the precast and prestressed concrete industry. Aci 117 90 requires no level alignment tolerance for the concrete because levelness depends on the location and placement of the supporting structure and, after the concrete is placed, deflection of the supporting structure. Tolerances for concrete construction tolerances for concrete. Aci functions as a technical and educational society for sharing innovative ideas and promoting superior concrete technology. Dec 19, 2010 aci 117 includes tolerances for fabrication, placement, cover, thickness, and elevation. Guide to formed concrete surfaces presented by technical. In the lines and surfaces of columns, piers, walls and in arrises. Aci 11710 specification for tolerances for concrete construction and materials aci 11710 and commentary free download as pdf file.
Even if the concrete contractor pours the concrete and finishes it to the specified floor flatness requirement, as stated in aci 117 specification for tolerances for concrete. This document is intended to be used as the reference document for establishing tolerances for concrete construction by specification writers and aci committees writing. Aci 117 tolerance conflicts concrete construction magazine. Aci 117 10 requires that if an unleveled straightedge placed on the slab surface is used to measure surface tolerances to evaluate the concrete contractors workmanship, such measurements must take place within 72 hours after slab placement. Get aci 117 10 specification for tolerances concrete pdf. Download aci 117 1r 14 guide for tolerance compatibility in concrete construction or read aci 117 1r 14 guide for tolerance compatibility in concrete construction online books in pdf, epub and mobi format. This document is intended to be used by specification writers and aci committees writing standards as the reference document for establishing tolerances for concrete construction and materials. Specification for tolerances for concrete construction and materials aci 11710 and. Aci tolerances for concrete construction concrete construction. Save this book to read aci 117 10 specification for tolerances concrete pdf ebook at our online library. Aci117m10 specification for tolerances for concrete. Get aci 117 10 specification for tolerances concrete pdf file for free from our online library. Aci 117 90, standard specifications for tolerances for concrete construction and materials doesnt address the issue.
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