These consist of loose fibers or granules and are made from cellulose, fiberglass, rock wool, cotton or other materials. These materials come in bags and are

usually blown into cavities using special equipment.

This material is so named in honor of a German physicist, consist of a hollow material with a small hole on one side. This is used to detect individual frequency of complex acoustic wave configuration.

A narrow strip of wood applied to cover a joint along the edges of two parallel boards in the same plane

A suction created by the flow of liquids in pipe, a pressure less than the atmospheric pressure.

The horizontal distance from the face of a lock or latch to the center of the knob or lock cylinder

In escalators, these stop the escalator if a foreign object becomes wedged at the guard.

A type of lamp generally used for roadways and sidewalks, uses sodium gas.

This device in escalators is provided at the drive unit location to protect against accidental movement of the escalator during inspection of the drives or during

general maintenance.

A graph used in air-conditioning and showing the properties of air-system mixtures.

Liquid sewage that has been treated in a septic tank or sewage treatment plant.

On elevators, a gear-driven machine having a drum to which the wire ropes that hoist the car are fastened, and on which they wind.

Minimum Gauge of galvanized sheet used for downspouts.

In boilers, they function only when it exceeds prescribed unsafe operating conditions.

Minimum height of a water seal for each fixture trap.

In theater stage house, a weight usually of iron or sand used to balance suspended scenery, or the like.

A beam that projects beyond one or both its support

A receptacle attached to a plumbing system other than a trap in which water or wastes may be collected or obtained for ultimate into the plumbing system.

A factor used in calculating cooling load that includes heat transferred from walls, doors, ceilings, etc.

The dimension of commercial acoustic boards for aluminum T-runners used for dropped-ceiling in offices

What is the pipe color for ammonia?

Any group of two or more similar adjacent fixtures which discharge into a common horizontal waste or soil branch.

An outhouse or structure used for the deposition of excrement.

Example/s of conductors-on-insulator wiring is/are;

A valve in which the flow of liquid is controlled by a rotating drilled ball that fits tightly against a resilient (flexible) seat in the valve body.