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ACI 318 Building Code Requirements for Structural Concrete provides minimum requirements necessary to provide public health and safety for the design and construction of structural concrete buildings. [6] It is issued and maintained by the American Concrete Institute. [7] The latest edition of the code is ACI 318-19.
Reinforced concrete structures are normally designed according to rules and regulations or recommendation of a code such as ACI-318, CEB, Eurocode 2 or the like. WSD, USD or LRFD methods are used in design of RC structural members. Analysis and design of RC members can be carried out by using linear or non-linear approaches.
The ACI 318 Building Code Requirements for Structural Concrete uses Limit State design. The ANSI/ AISC 360 Specification for Structural Steel Buildings , the ANSI/ AISI S-100 North American Specification for the Design of Cold Formed Steel Structural Members , and The Aluminum Association 's Aluminum Design Manual contain two methods of design ...
As an example, ACI 318 specifies either Type 1 (125% Fy) or Type 2 (125% Fy and 100% Fu) performance criteria. [ 32 ] For concrete structures designed with ductility in mind, it is recommended that the mechanical connections are also capable of failing in a ductile manner, typically known in the reinforcing steel industry as achieving "bar-break".
The comparison of the seismic behavior of underground braced walls with ACI 318 design method reveals that bending moment and shear force of the walls under Northridge earthquake loads were observed to reach 2.8 and 2.7 times as large as the respective allowable limits.
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Anchor channels and channel bolts are qualified in Europe according to EAD 330008-XX-0601 and designed according to EN 1992-4. In the US, the system is qualified according to Acceptance Criteria AC232 and designed according to AC232 and ACI 318.
The ultimate strength of concrete is influenced by the water-cementitious ratio (w/cm), the design constituents, and the mixing, placement and curing methods employed.All things being equal, concrete with a lower water-cement (cementitious) ratio makes a stronger concrete than that with a higher ratio. [2]