NV C-18 Masonry Practice Questions - Nevada C-18 Masonry Contractor Examination Exam

How is a grout key formed between successive grout pours in a CMU wall?

Insert a wood keyway strip in the mortar joint Leave a 6-inch air gap and grout it the next week Stop the grout about 1-1/2 inches below the top bed joint of the pour Fill every cell flush with the top of the wall after each lift

Correct Answer:

Stop the grout about 1-1/2 inches below the top bed joint of the pour

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