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American Concrete Institute. The American Concrete Institute (ACI, formerly National Association of Cement Users or NACU) is a non-profit technical society and standards developing organization. ACI was founded in January 1905 during a convention in Indianapolis. [1][2] The Institute's headquarters are currently located in Farmington Hills ...
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".
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International Code Council. The International Code Council (ICC) is an American nonprofit standards organization, sponsored by the building trades, which was founded in 1994 through the merger of three regional model code organizations in the American construction industry. [1] The organization creates the International Building Code (IBC), a ...
The ACI codebook puts an upward limit on the spacing between ties. ACI Code 7.10.5: Vertical spacing of ties shall not exceed 16 longitudinal bar diameters, 48 tie bar or wire diameters, or least dimension of the compression member. If the ties are spaced too far apart, the column will experience shearfailure and barrel in between the ties. [4]
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.
Anchor channels consist of steel C-shaped channels and anchors (mostly headed studs) which are connected to the channel by welding or riveting/forging. The channels are supplied with foam filler to prevent concrete from leaking into the channel when the concrete is poured. The system includes T-shaped bolts which are called T-bolts or channel ...
Anchorage in reinforced concrete. Reinforced concrete is concrete in which reinforcement bars ("rebars"), reinforcement grids, plates or fibers are embedded to create bond and thus to strengthen the concrete in tension. The composite material was invented by French gardener Joseph Monier in 1849 and patented in 1867. [1]