Question

elements of a well - constructed garage floor (slab - on - grade type) include all of the following except
slab thickness of at least 3 inches
adequate slope toward the vehicle door
a free - draining granular base below the concrete
rigid foam insulation under the concrete floor slab
well compacted backfill placed in the trenches around the garage foundation
question 50
1 pts
joist twisting or warping is commonly caused by
uneven settling
poor end bearing
wood rot
lumber shrinking unevenly as it dries
higher than anticipated loading of the deck

Explanation:

Answer:

(First question) Rigid foam insulation under the concrete floor slab
(Second question) Higher than anticipated loading of the deck