Roof Joist Thickness

Featuring trus joist tji joists for floor and roof applications.

Roof joist thickness.

Joist girders serve as primary framing members with simple spans to support concentrated loads for a roof or floor system. A 2 by 4 inch joist for instance hangs into the room by 4 inches which may leave the ceiling high while a 2 by 12 inch joist in the same position hangs 12 inches into the room which decreases the ceiling height by 8 inches. The thickness of plywood used for roof decking depends on the roof slope the spacing of rafters and the weight of other material to be put over the decking as well as the design load the. Thickness generally improves floor.

Flat roof joist calculator. Ceilings directly applied to the bottom edge of the floor members or equivalent 1x or 2x strapping is a. This demo version is fixed at 1m clear span. The roof s main job however is to protect the interior of the house and personal belongings from the outside elements.

This is the distance between joist centres. 1 enter joist details 1 1 span and joist spacing. These concentrated loads often include standard steel joists that are in turn supporting steel roof or floor deck. The full version allows any size.