The spans of filler joists supporting a slab may be considered approximately equal if the longest span does not exceed the shortest span more than

The spans of filler joists supporting a slab may be considered approxi

1.	The spans of filler joists supporting a slab may be considered approximately equal if the longest span does not exceed the shortest span more than
A.	5%
B.	10%
C.	15%
D.	20%
Answer» D. 20%