The contractors written request for payment of amount due for completed portions of the work, 1 and, if the contract […]

A regulator for controlling and maintaining a uniform pressure of gas supplied to an appliance.

In electric systems, a metal housing containing two or more devices (such as fuses) for protection against excessive current in

Any device (other than industrial) which utilizes gas or electricity as a fuel to produce air-conditioning, heat, light, refrigeration, or

An electric lamp designed for high-temperature service.

1. The mass per unit volume of in-place thermal insulation. 2. The mass per unit volume (or the weight per

Of an extended light source at a specified distance: the candlepower of a point source which produces the same illumination