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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 ...
He was also an original member of the joint ASCE/American Concrete Institute (ACI) committee that formulated provisions for prestressed concrete in the ACI Building Code. Janney was also active in the Prestressed Concrete Institute (PCI), the National Society of Professional Engineers (NSPE) and the American Society for Testing and Materials ...
Portland Cement Association is a non-profit organization that promotes the use of cement and concrete.The organization conducts and sponsors research, [2] participates in setting cement manufacturing standards, [3] [4] and disseminates free designs of concrete-based architectural structures, [5] among other functions.
Research into arching or compressive membrane action has continued over the years at Queen's University Belfast, with the work of Niblock, [26] [27] who investigated the effects of CMA in uniformly loaded laterally restrained slabs; Skates, [28] who researched CMA in cellular concrete structures; Ruddle, [29] [30] who researched arching action ...
The ACI Building Code Requirements put the following restrictions on amount of spiral reinforcement. ACI Code 7.10.4.2: For cast-in-place construction, size of spirals shall not be less than 3/8 in. diameter. ACI Code 7.10.4.3: Clear spacing between spirals shall not exceed 3 in., nor be less than 1in.
The technology, they continued, could create "individually themed online slot games that can respond to a player's voice and even generate novel content in response to a player's behavior and game ...
President-elect Donald Trump said he'd fire federal workers who won't return to the office and also challenge in court a Biden-era deal on the issue.
Mass concrete is defined by American Concrete Institute Committee 207 as "any volume of concrete with dimensions large enough to require that measures be taken to cope with the generation of heat from the hydration of cement and attendant volume change to minimize cracking."