A material resulting in a compressive strength of no more than 1200 pounds per square inch (8300 kPa).

A roof drainage system that permits rainwater to drain off a roof much more slowly than the rate at which

Fill (intended as a bearing for a structural load) which is placed in layers, compacted, and tested to ensure that

The injection of grout into a control joint.

The ratio of the minimum compressive strength of a material, such as concrete, to the average compressive strength.

A position in a library, public lobby, hospital, etc., where activities may be overseen or supervised.

One or more panels comprised of an assembly of master switches, adjustable controls, indicating dials or numerical readouts, and the