Unavoidable drainage ditches, culverts, vents, ducts, and other openings should be protected by securely fastened welded
Posted: Fri Jul 22, 2022 11:17 am
Unavoidable drainage ditches, culverts, vents, ducts, and other openings should be protected by securely fastened welded-bar grills when they have a cross- sectional area greater than:
A. 10 square inches
B. 48 square inches
C. 64 square inches
D. 96 square inches
E. 04 square inches
A. 10 square inches
B. 48 square inches
C. 64 square inches
D. 96 square inches
E. 04 square inches