SC Wood Frame Structures Practice Questions - South Carolina Wood Frame Structures Contractor Examination Exam

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A crew is ready to pour continuous wall footings. The trench bottom is frozen and contains pockets of topsoil. What is the correct action before placing concrete?

Place the concrete; the heat of hydration will thaw the subgrade Remove frozen soil and organic/topsoil and bear the footing on firm, undisturbed mineral soil or engineered fill, then place concrete Cover the frozen bottom with 2 inches of loose gravel and pour immediately Add extra water to the mix so it bonds to the ice

Correct Answer:

Remove frozen soil and organic/topsoil and bear the footing on firm, undisturbed mineral soil or engineered fill, then place concrete

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