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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, Michigan, USA. ACI's mission is ...
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Design complex mat footings (slabs on grade). Automates work involved in finite element modeling. Checks that footing demand/capacity ratios (unity checks) pass for IBC 2006/ACI 318-05 and provides steel requirements for slab. AnalysisGroup CAD
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.
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]
Short title: Commission Regulation (EC) No 318/2009 of 17 April 2009 amending Regulation (EC) No 1914/2006 laying down detailed rules for applying Council Regulation (EC) No 1405/2006 laying down specific measures for agriculture in favour of the smaller Aegean islands (repealed)
Progress M-19M undocked from Zvezda module of the ISS on 11 June 2013 at 13:58 UTC. The undocking paved the way for European Space Agency's ATV-4 Albert Einstein to subsequently dock with the ISS. Soon after the undocking, Progress M-19M entered an independent orbit to begin a one-week free flight and conducted the Radar-Progress experiment.