Download 318M-11 Metric Building Code Requirements for Structural by ACI Committee 318 PDF

By ACI Committee 318

The "Building Code standards for Structural Concrete" ("Code") covers the fabrics, layout, and development of structural concrete utilized in constructions and the place appropriate in nonbuilding buildings. The Code additionally covers the power overview of current concrete buildings.

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Composite concrete flexural members — Concrete flexural members of precast or cast-in-place concrete elements, or both, constructed in separate placements but so interconnected that all elements respond to loads as a unit. Compression-controlled section — A cross section in which the net tensile strain in the extreme tension steel at nominal strength is less than or equal to the compression-controlled strain limit. Compression-controlled strain limit — The net tensile strain at balanced strain conditions.

Seismic hook — A hook on a stirrup, or crosstie having a bend not less than 135 degrees, except that circular hoops shall have a bend not less than 90 degrees. Hooks shall have a 6db (but not less than 75 mm) extension that engages the longitudinal reinforcement and projects into the interior of the stirrup or hoop. 4 and Chapter 21. Shear cap — A projection below the slab used to increase the slab shear strength. 6. Sheathing — A material encasing prestressing steel to prevent bonding of the prestressing steel with the surrounding concrete, to provide corrosion protection, and to contain the corrosion inhibiting coating.

Other metal elements, such as inserts, anchor bolts, or plain bars for dowels at isolation or contraction joints, are not normally considered to be reinforcement under the provisions of this Code. Weldability of the steel is based on its chemical composition or carbon equivalent (CE). The Welding Code establishes preheat and interpass temperatures for a range of carbon equivalents and reinforcing bar sizes. Carbon equivalent is calculated from the chemical composition of the reinforcing bars. The Welding Code has two expressions for calculating carbon equivalent.

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