NM CID GS-4 Practice Questions - New Mexico CID GS-4 Concrete, Cement, Walkways And Driveways Examination Exam

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ACI mixture guidance limits nominal maximum aggregate size in slabs to about one-third of the slab thickness. For a 4-inch sidewalk, which nominal maximum size is acceptable under that rule?

1/2 inch or 3/4 inch, but not 1-1/2 inch 1-1/2 inch only 2-1/2 inch only Any size, because sidewalks have no aggregate limit

Correct Answer:

1/2 inch or 3/4 inch, but not 1-1/2 inch

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