Glossary Category:

Solenoid

A relay that is activated by a lower voltage power source to connect a higher voltage and power to a load. An example is the contactor in and air conditioning system that is operated by about 24 volts to connect 240 volts to a compressor.

Spaced decking

a term used to define the slats used to support the shingles of a wood shingle roofs.

Spacers

Blocks or shims that are installed between something to maintain a specified distance.

Spalling

To break up into chips or fragments. A term used when paint separates from a surface and falls a way in pieces or when concrete breaks up and falls away from a wall or foundation.

Spandrel beams

Beams usually made of concrete that are used as a floor on one side and act as the structural member to support the floor.