An inherent quality of a vapor diffusion retarder is ________.
A) It does not allow microscopic water molecules to pass through the wall system
B) It does allow microscopic water molecules to pass through and leave the wall system.
C) It blocks 100 of moisture transfer
D) It speeds up the transfer of bulk moisture
Question 2
Gridlines are used to _____.
A) make it easy to refer to specific locations on a plan
B) show changes in topography within a building structure
C) indicate that an object has been broken off
D) indicate land boundaries on a site plan
