Roof Joist Connection Detail

Depending on loads and spans c joists are typically spaced at 12 16 19 2 or 24 on center spacing.

Roof joist connection detail.

Individual connections and connections within full scale roof systems were tested to quantify potential system effects. Details for conventional wood frame construction. Provide a lightweight low cost rigid floor assembly c joist components provide an economical lightweight alternative to open web trusses bar joists engineered lumber cast in place or hollow core floor assemblies. Nl8 non load bearing wall parallel to joist roofs rafters joists.

Performance of conventional roof systems and components including ceiling joist to rafter connections and roof framing to wall connections. The ceiling joists restrain the exterior walls from being. The tables below contain downloadable standard design detail drawings for typical unistrut ceiling grid applications. Hand driven and pneumatic fasteners were included in the test program.

Pocket connection a pocket connection consists of framing the floor or roof system into a void in the masonry wall. Metal framing connectors make the best connections. This detail is used when masonry continues above either as part of the wall or as a parapet the connection location and eccentricity is to be minimized. The first approach to achieving a strong durable struc.

Steel bar joist roof direct bearing connection. Connection for roof rafters framed at angles. American forest paper association wood construction data 1. Structural track usually in the same gauge as the.

Drawings below are generic details to show design intent only. A few currently available roof systems use concrete masonry while some rely on precast concrete joists or steel bar joists. However other materials may be used in conjunction with the concrete masonry. Maximum 6 inches 152 mm between brace ceiling.

However since there is some load transfer with these members the code requires a nominal 2 thickness and bracing to a load bearing partition at the upper end or to be designed as a beam with proper supports. Joist hangers can hang rafters from a ledger but for sloping rafters notch them or use special rafter hangers. The drawings will help you gain a better understanding of engineered ceiling grid design but they are not intended for construction purposes because. If rafters will sit on top of a ledger attach them with seismic anchors as you would attach rafters to a beam.

Minimum connection of brace to a roof rafter and ceiling joist with four no 10 screws at each end.