Wisconsin · answered by Verika · verified against sources
What is the maximum slump allowed for structural concrete?
"Use a 1-inch to 4-inch slump for concrete used in structures or placed in forms, except as follows: - Do not exceed a slump of 2 inches for grade E concrete. - Increase slump as specified in 502.3.5.3 for concrete placed underwater. - The contractor may increase the slump to a maximum of 9 inches for a mixture that contains a high range water reducer conforming to 501.2.5.3.3. Do not exceed the maximum w/cm allowed for the grade of concrete being used when a high range water reducer is in use." [1] "The contractor may increase the slump to a maximum of 9 inches for a mixture that contains a high range water reducer conforming to 501.2.5.3.3. Do not exceed the maximum w/cm allowed for the grade of concrete being used when a high range water reducer is in use." [1]
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