In jack arch floors, the rise of the arch is equal to ________ of the span.
A. 1/3
B. 1/4
C. 1/6
D. 1/12
Answer:D
In jack arch floors, the rise of the arch is equal to ________ of the span.
A. 1/3 B. 1/4 C. 1/6 D. 1/12