Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
(OP)
Say a retaining wall or u-frame structure are designed using a concrete strength of 3,000 psi, but during construction a higher concrete strength, such as 4,000 psi is used. Do you guys/girls see anything that might be unconservative in using 4,000 psi concrete strength during construction when a retaining wall or u-frame were design using a concrete strength of 3,000 psi? Off hand, I do not see an issue but running it by you guys in case I am missing something.
Thanks
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RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
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RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
But the minimum area of steel (3SQR(Fc'))bd/fy value is larger when using 4,000 psi in the field than the 3,000 psi I used during design. So in this sense wouldn't providing a larger concrete strength than what it was design for be unconservative? Since the area of steel provided could potentially be less than the minimum area of steel requirements and not be in accordance to ACI 318.
RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
As others have noted, if you design to 3000 psi, chances are you will get a somewhat higher actual strength, so under your premise, all designs would be non-conservative if the strength went above the design strength.....not so.
RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction
RE: Retaining Wall or U-Frame design with 3,000 psi concrete but 4,000 psi used for construction