Definition

A naturally-occurring, radioactive gas which is heavier than air and is common in many parts of the country. Radon gas exposure is associated with lung

Thermometer scale on which unit of measurement equals the Fahrenheit degree.

Steel rods or metal fabric placed in concrete slabs, beams, or columns to increase their strength.

This conduit resembles plumbing pipe, protecting wires from damage.

All plumbing that should be done before the finish trades (sheetrock, painting, etc), including all waste lines and supply water lines that are in the

A felt which is impregnated with tar or asphalt.

A term used to describe to a material which melts with the heat from the sun’s rays, and seals over cracks that were earlier formed

A thick handsplit shingle, resawed to form two shakes; usually edge-grained.

The portion of the sanitary sewer which connects the interior waste water lines to the main sewer lines. The side sewer is usually buried in

A structure on a roof that is designed to admit light and is somewhat above the plane of the roof surface.