Listed spans are for dry-service conditions unless the table is labeled as Wet-Service. The load duration factor, CD, is 1.0 unless shown as 1.15 for snow or 1.25 for construction loads. Deflection is limited to the span in inches divided by 360, 240 or 180 and is based on live load only. Comité associé du Code national du bâtiment, 1971. Applied loads are given in pounds per square foot (psf). Conseil national de recherches du Canada. ‘Tableaux Des Portées Des Solives, Des Chevrons Et Des Poutres En Bois : 1971’. Associate Committee on the National Building Code, 1975. ‘Span Tables for Wood Joists, Rafters, Trusses and Beams: 1975’. Associate Committee On The National Building Code. The tables below give maximum spans for rafters and beams. For heavy roofs or in areas with substantial snowfall or winds, call your local building department for code requirements. These span tables are the equivalent of other industry-standard span tables and are calculated to the same standards. These spans were calculated using our flat roof joist calculation engine. This span table is to the format and methodology given in BS 5268-7.2. For questions about Code licensing, sales, technical support, to obtain accessible copies, or to learn about other accommodations, please contact the NRC's Codes Canada team: In areas with mild climates, patio roofs are generally designed for loads of 30 psf (pounds per square foot). Click on a span to generate a full calculation (you can adjust the exact span).Floor Joists - 30 psf Live Load, 10 psf Dead Load, L/360 Deflection. Maximum spans are inside to inside of bearings. Technical detail sheets and a dynamic AutoCAD block are available here. Note: Deflection is limited to the span in inches divided by 360 for live load only. If your requirement is outside of the options available here, you are thinking about using Posi-Rafters, or you require further information for specification purposes please email our design team email protected. Associate Committee on the National Building Code Maximum spans are inside to inside of bearings. Search for: Department of Fisheries and Forestry. View final version : Span Tables for Wood Joists, Rafters and Beams: 1971 ( PDF, 4.8 MiB) Rafter Span Tables - Use these tables to determine lengths, sizes, and spacing of rafters based on several factors such as species, load, grade, and spacing.Check out our Online Specifier for anything outside these tables. Span Tables for Wood Joists, Rafters and Beams: 1971 Download Use our Span Tables to calculate the ideal structural beam or post for your job.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |