6. What is the length of wall studs when the finished floor-to-ceiling height is 8′, ceiling material is ¾″ thick, the finished floor is ¾″ thick, and it's framed with three plates?

Question

6. What is the length of wall studs when the finished floor-to-ceiling height is 8′, ceiling material is ¾″ thick, the finished floor is ¾″ thick, and it's framed with three plates? 
A. 7′9″ 
***B. 8′1½″ 
C. 8′ 
D. 7′7½″

I think the answer is B.

7. A carpenter needs to calculate the correct length of the wall studs for a platform-frame construction. The building will have a finished floor-to-ceiling height of 8′, a ¾″-thick hardwood finish floor, ¾″ furring strips in the ceiling, and ½″ gypsum board on the ceiling. The combined thickness of the top plates and the sole plates is 4½″. What would be the correct stud length for this building? 
A. 8′1″ 
B. 7′10½″ 
***C. 7′8½″ 
D. 7′9½″

Is the answer C?

Damon · Answer

6. You do not say how thick the three plates are 7. 8' + 3/4" + 3/4" + 1/2" = 8' 2" then subtract plates 8' 2" - 4.5" = 7' 14" - 4.5" = 7' 9 1/2"

doug · Answer

For 6, they don't tell you the thickness of the three plates.