Standardized Test Requirements. SAT or ACT Test scores and SAT Subject Test scores are required for admission. Find out how your SAT score compares with past applicants to this college:
Norm Abram replies: The 5/8-inch, fire-code drywall (called Type X) increases a wall's fire rating to a minimum of 1 hour, from the 30-minute rating for standard Â½-inch drywall. And it's not just thickness that makes the difference. Type X has a denser core and contains glass fibers that keep it from crumbling in the heat.
CDX stands for: C = one side of the board is C grades, which is the average surface quality. D = the other side of the board is D grades, which might show some little holes X = stands for the type of glue used to hold the board together. In this case X stands for Exposure to Moisture (but NOT water or weather resistant!). As shown above, the grade determines the name of the plywood.