Residential Floor Truss Span Tables

Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91.

Residential floor truss span 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. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. Up to 40 open framing for plumbing. This also reduces the need and cost for extra bearing posts beams and footings.

Maximum deflection is limited by l 360 or l 480 under live load. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Over 51 sizes styles in stock. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00.

Custom trusses up to 100 span. Roof truss span tables alpine engineered products 15 top chord 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 bottom chord 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2 12 24 24 33 27 27 37 31 31 43 33 33 46 2 5 12 29 29 39 33 33 45 37 38 52 39 40 55 3 12 34 34 46 37 39 53 40 44 60 43 46 64 3 5 12 39 39 53 41 44 61 44 50 65 47 52 70. Continuing on from part 1. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms.

Shop roof trusses spacer floor truss. Geometry loading spacing bearing conditions etc. Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. And parallel to floor truss span strongback lateral supports 24 max.

Using floor joist span tables. Roof floor truss manual 7 31 08 10 43 am page 12. Residential structural design vertical structural forces we were about to start learning about floor joist span tables. Span tables below illustrate common combinations of the multiple variables available.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Floor truss span chart each individual floor truss design is unique based on multiple variables. 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. 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.

Engineered wood products ewp span and size charts for bci joists. 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.