Floor Truss Span Tables

Span tables use these tables to determine rafter span ceiling joist span and floor joist span.

Floor truss span tables. Residential structural design vertical structural forces we were about to start learning about floor joist span tables. And parallel to floor truss span strongback lateral supports 24 max. Of bearings and is based on uniformly loaded joists. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel.

Span tables below illustrate common combinations of the multiple variables available. Included are a series of representative roof truss span tables that will give you an idea of the truss spans available for a particular load condition load duration lumber type and truss configuration. Keep in mind that these tables are for estimations only. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00.

Engineered wood products ewp span and size charts for bci joists. Continuing on from part 1. The spans are based on simple span joists. Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability.

Design properties 16 floor span and load tables 17 allowable holes 18 roof span and load tables 19 cantilevers 20 21 framing connectors 22 23. Don t worry you won t need to do a lot of calculations in determining the size and placement of the structural framing within your house design. Floor joist span tables for various sizes and species of wood. Joist span table use these tables to determine floor joist spans based on grade of lumber size of joist floor joist spacing and a live load of 30 lbs ft 2 or 40 lbs ft 2 these tables can also be used to determine deck joist span.

Maximum deflection is limited by l 360 or l 480 under live load. Roof floor truss manual 7 31 08 10 43 am page 12. The maximum span is measured o c. Geometry loading spacing bearing conditions etc.

Floor truss span chart each individual floor truss design is unique based on multiple variables. Spacing of trusses are center to center in inches. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. Floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13 framing connectors 14 15 section 2.

72 5 0 mi ni m u m girder floor truss floor truss jacks a a bearing wall girder floor truss floor truss jacks bearing wall cantilevered floor truss two 2x rim joists 24 max. You can also use the wood beam calculator from. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.