Roof Joist Construction Details

End bearing in hanger supported by a beam.

Roof joist construction details.

End bearing in hanger supported by i joist s 44kb. Secure each tile with two large head roofing nails. The construction of the flat roof is similar to that of the timber upper floor. For additional stability you can also use steel joists that are built into one or both of the walls.

Good installation begins with specification of the correct joist for the application. The united states still uses imperial units of measurement and framing members are typically spaced sixteen or twenty four inches apart. This will give additional stability to the roof structure. In the uk a concrete tiled roof would normally have rafters at 600 mm 24 in centers roof battens at 300 mm 12 in centers and ceiling joists at 400 mm 16 in centers.

I joists in floor and roof applications. End bearing with rim board. Double the tiles at eaves and project them 1 inch over the rear edge of gutters. I joist construction details.

Lay all tiles within 1 foot of hips ridges and abutting vertical surfaces in roofer s cement. Lay 10 or 12 inch tiles with 1 inch head lap on the sides of dormers. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Trada and approved document part a give guidance on sizes of joists for flat roofs relating to spans and loading.

Intermediate bearing with blocking panels. End bearing with blocking panels. In addition to floor and roof framing details this guide includes recommendations for cantilevers and placement of web holes.