Brick made from pan breeze and portland cement; often built into ordinary brickwork because of its good nail-holding capability.

A Y-shaped symmetrical pipe fitting in which the flow in two parallel pipes is united in one pipe.

Any stone composed of angular fragments embedded and consolidated in a finer ground. Numerous marbles owe their distinctive appearance to

An underlayment sheet material, saturated with asphalt, which permits the transmission of water vapor; often used as underlayment for asbestos