ACI Specification for Tolerances for Concrete Construction and Materials ( ACI ) and Commentary (ACI R). Specification for Tolerances for Concrete Construction and Materials (ACI ) and Commentary. ACI contains a tolerance for the elevation of the top surface of formed suspended slabs, before removal of supporting shores (±3/4 inch, Section ).
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Building codes establish minimum requirements necessary to protect the public. Exceptions to the Standard Specification should be made in the Project Specifications, if required. Specified width more than 2 in. Concealed flatwork and formed surfaces. In any 10 ft of height the centerpoint shall not change more than 1 in. Specified slump more than 3 in.
Class A – For surfaces prominently exposed to public view where appearance is of special importance.
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However, total number of bars shall not 11710 less than that specified. Class D – Minimum quality surface where roughness is not objectionable, usually applied where surfaces will be concealed. When member size is over 12 in.
Levelness – The degree to which a line or surface parallels horizontal. Precast planar element – Wall panel, floor panel, or similar unit.
ACI 117-10 (R2015)
Bowing – The displacement of the surface of a planar element from a plane passing through any three corners of the element. The tolerances in this Specification do not apply to special structures or procedures not cited in the document such as nuclear reactors and containment vessels, bins and silos, circular prestressed concrete tank structures and shotcrete. It is also not intended to apply to the specialized construction procedure of shotcrete.
Greater than 2 ft. In alignment of head joints. The gap at any point between the straightedge and the floor and between the highspots shall not exceed: A permitted variation from location or alignment.
Fling Chairman, Editorial Subcommittee B. ACI has over 95 chaptersstudent chapters, and nearly 20, members spanning over countries. For elements to be used as concrete guideways support and steering avi. The designer should be aware that the recommended vertical alignment tolerance of 1. Roof elements without topping slab. Industrial 1171-0 products may not conform to acci planar tolerances.
Section 5 – Precast concrete 5. Over 3 ft dimension. Member depth or thickness over 8 in. Location of centerline of opening.
Manufacturers should be consulted for appropriate tolerances for their products. Are you sure you want to empty the cart?
ACI Tolerances for Concrete_百度文库
The benefits of a subscription: Reduction in cover shall not exceed one-third specified concrete cover. Difference in width between adjacent trends. Warping – The displacement of the surface, portion, or edge of a planar element from a plane passing through any three corners 171-10 the element.
Precast linear element – Beam, column, or similar unit.
If application of positive tolerance to Type 9 results in a chord length equal to or greater than the arc or bar length, the bar may be shipped straight. Where range is specified there is no tolerance. Outside corner of exposed corner columns and control joint grooves in concrete exposed to view. Standards monitoring is a free service designed for you who wish to be alerted of changes to or new editions of the standards required in your work.
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