Roof Rafter Span Table Ontario

Lvl beam span table ontario building code wood living room.

Roof rafter span table ontario. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch. Understanding floor joist spans deck r design microllam lvl beams weyerhaeuser floor beam span tables calculator the span canadian wood council. Half building width minus 1 2 ridge thickness. Spans for joists rafters and beams 1 except as required in sentence 2 and article 9 23 13 10 the spans for wood joists and rafters shall conform to the spans shown in tables a 1 to a 7 for the uniform live loads shown in the tables.

Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Microlam beam weight per foot. Tables in the span book and the national building code were both generated by the canadian wood council. 4 when the roof slope is 1 in 3 or more ridge support need not be provided when the lower ends of the rafters are adequately tied to prevent outward movement.

See rafter run to outer wall calculator below. Framing any roof but particularly a gable roof low slope roof and cathedral ceilign roofs requires collar ties rafter ties and possibly a structural ridge beam to support the roof and to. Microlam beam weight. Allow for ridge thickness when determining rafter run to outer wall.

This article excerpts from provides copies of roof framing suggestions from canadian building codes and the cmhc wood frame house construction guide. Also available for the android os. Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through. The ontario building code spans for joists rafters and beams 9 23 4 2.

The span book is a supplement to the wood joist rafter and beam spans found in the national building code of canada. Roof framing suggestions canadian guidelines. 2 spans for floor joists that are not selected from tables a 1 and a 2 and that. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run.

Span calculator for wood joists and rafters also available for the android os.