J definitions - Building Terms Dictionary



J definitions - Do you know architectual drafting or building terms starting with the letter "J"?

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Jack:
A device for exerting a large force over a short distance, usually by means of screw action or hydraulic pressure.

Jack Rafter:
A shortened rafter that joinsa hip or valley rafter.

Jamb:
A vertical side of a door or window.

Jet Burner:
A torch that burns fuel oil and compressed air, used in quarrying granite.

Joist:
One of a parallel array of light, closely spaced beams used to support a floor dek or flat roof.

Joist Band:
A broad, shallow concrete beam that supports one-way concrete joists whose depths are identical to its own.

Joist Girder:
A lightsteel truss used to support open-web steel joists.


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