Roof Rafter Span Table Ontario

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.

Roof rafter span table ontario.

Microlam beam weight. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. Roof framing suggestions canadian guidelines. Span calculator for wood joists and rafters also available for the android os.

Microlam beam weight per foot. The span book is a supplement to the wood joist rafter and beam spans found in the national building code of canada. 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. 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.

5 ties required in sentence 4 are permitted to consist of tie rods or ceiling joists forming a continuous tie for opposing rafters and nailed in accordance with table 9 23 13 8. Understanding floor joist spans deck r design microllam lvl beams weyerhaeuser floor beam span tables calculator the span canadian wood council. Allow for ridge thickness when determining rafter run to outer wall. Rafter span tables ontario kennith ouellet october 17 2017 uncategorized leave a comment 92 views floor joist obc tables you floor joist obc tables you floating deck and landing building floor beam span tables calculator.

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. This article excerpts from provides copies of roof framing suggestions from canadian building codes and the cmhc wood frame house construction guide. Tables in the span book and the national building code were both generated by the canadian wood council. 2 spans for floor joists that are not selected from tables a 1 and a 2 and that.

Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Lvl beam span table ontario building code wood living room. See rafter run to outer wall calculator below. Half building width minus 1 2 ridge thickness.

Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through.