3) An economical type of framing for concrete forms.
a) longitudinal rib type
b) perpendicular rib type
c) solid rib type
d) staggered rib type
a) longitudinal rib type
b) perpendicular rib type
c) solid rib type
d) staggered rib type
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Answer:
—An economical type of framing for concrete forms.
B. perpendicular rib type
Answer:
3.b
Explanation:
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