The Reorganized ACI 14 Code. – Are You Ready? Neal S. Anderson, P.E., S.E.. Staff Consultant. Simpson Gumpertz & Heger, Chicago, Illinois. The American Concrete Institute (ACI) has pub- lished Building Code Requirements for Struc- tural Concrete (ACI ) and Commentary. /R ACI Building Code and Commentary. PREFACE. The code portion of this document covers the design and construction of structural concrete .

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At the column base, provision shall be made to transfer the load to the footing at safe unit stresses in accordance with Section a.

The limiting value for shear stress in slabs and footings, vc, in Section c and d shall be: The reinforced concrete portion shall be designed to carry all loads imposed between metal core brackets or connections at a stress of not more than 0. The Code also covers the xci evaluation of existing concrete structures.

The pressure test shall be held for 4 hr with no drop in pressure except that which may be caused by air temperature. Within these limitations, columns may be offset a 3318-10 of 10 percent of the span, in direction of the offset, from either axis between cen- ter lines of successive columns. If concrete surfaces after removal of the forms are to be ex- posed to the weather or be in contact with the ground, the reinforce- ment shall be protected with not less than 2 in.

Columns supporting flat slabs designed by the empirical method shall be proportioned for the bending moments developed by unequally loaded panels, or uneven spacing of columns. Welding of reinforcement is covered by reference to the appropriate AWS standard.

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Full text of “ACI Building Code Requirements for Reinforced Concrete”

The simplified design equations given in Chapters 16 and 19 are satisfactory. Its primary objective is to assist its members and the engineering profession generally, by gathering and disseminating information about the properties and applications of concrete and reinforced concrete and their Generated for Mohamed Aly Abdel-razik Moustafa University of California, Berkeley on A middle strip one-half panel in width, symmetrical about panel center line.

The modulus of elasticity of prestressing steel shall be deter- mined by tests or supplied by the manufacturer. Unbonded steel shall be per- manently protected from corrosion. Drain pipes and other piping designed for pressures of not more acj 1 psi above atmospheric pressure need not be tested as required in 3.

318-100 between the middle and the edge of 31810 wall, for footings under masonry walls 3. All concrete materials and all reinforcement, forms, fillers, and ground with which the concrete is to come in contact shall be free from frost.

The spacing of the bars shall not exceed five times the thickness of the flange, nor in any case 18 in. This reinforcement shall be designed to carry the load on the portion of the slab required for the flange of the T-beam.

Building Code Requirements for Structural Concrete and Commentary

The water content shall be the minimum necessary for proper placement but in no case more than 5y2 gal per sack. For intermediate positions of the pile center, the portion of the pile reaction to be assumed as producing shear on the section shall be based on straight-line interpolation between full 318-1 at 6 in.

Moments at faces of supports may be used for design of beams and girders. Stresses vary as the distance from the neutral axis except for deep beams Sec- tion Tables cover a wide range of working stresses. Click here to sign up.

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The change in length of columns and slabs due to direct stress, and deflections due to shear, may be neglected. The shear stress, vc, acl on an unreinforced web in Sec- tion c shall be 0. For negative moment, along the edges of the panel at the faces of the supporting beams.

318-08: Building Code Requirements for Structural Concrete and Commentary

By a standard hook, considered as developing 50 percent of the allowable stress in the bar, plus embedment sufficient to develop by bond the remaining stress in the bar, in conformance with Chapters 13 and Where the load to be supported is definitely known, the structure shall be analyzed for that load.

When designed under Sectionthree-fourths of the width of the strip shall be used as the width of the section acu computing compression due to bending, except that on a section through a drop panel, three-fourths of the width of the drop panel shall be used.

When such bends are made at points of high stress in 31-10 bar, an adequate radius of bend shall be provided to prevent crushing of concrete. In the slab over the cellular spaces, reinforcement shall be provided as re- quired by Section The construction shall consist of at least three continuous panels in each direction.

Plain bar—Reinforcement that does not conform to the definition of deformed bar.