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D. sills
2. Although studs are sometimes spaced 24" O. C. in residential structures, a
spacing of 0.C. is more commonly used.
A. 12"
B. 16"
C. 18"
D. 20"
3. Study the drawing of a typical wall frame shown below and identify the
specified parts.

Ibelieve it is the 2nd answer, create gardens on all rooftops. let me know if this .

Answersouth

D. a mountain abd are made by volcanos and tectonic plates

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.