STEEL BUILDINGS GLOSSARY

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Jack Beam
A primary horizontal member used to support another beam, truss or rafter.

Jamb
Vertical member at the side of a wall opening.

Joist
A horizontal member for supporting the decking of floors or roofs.

Lean-to (LT)
Is a building extension which does not contain a ridge, but consists of one continuous slope from side to side. These units usually have the same roof slope and girt design as the building to which they are attached. All building types normally have Simple Span endwall girts flush in the column line.

Live load
Any variable load that results from intended use of the structure during its lifetime.

Loads
Anything that causes a force to be exerted on a structural member. Examples of different types of loads are a. Dead Load b. Live Load c. Impact Load d. Seismic Load e. Wind Load f. Crane Load g. Auxiliary Load h. Collateral Load

Louver
A wall opening provided with slanted blades, fixed or movable, to allow flow of air inside the building.

Low Rise Building
A description of a class of buildings usually less than 60' eave height. Commonly, they are single story, but do not exceed 4 stories.

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