Floor Trusses Sizes

Yellow pine douglas fir redwood hemlock spruce.

Floor trusses sizes.

While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length. Floor joist scab cantilever floor cantilevered perpendicular and parallel to floor truss span strongback lateral supports 24 max. Roof floor truss manual 7 31. Joist span and spacing is set by your local building code.

No matter the application our variety of truss styles and sizes make it possible for your project to come to fruition. Engineered wood products ewp span and size charts for bci joists. 2 grade of douglas fir are indicated below. Select your i joists floor lvl header or roof lvl headers.

1 psf lb f ft 2 47 88 n m 2. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. When building a house or even a deck it is important to confirm you have the correct joist sizes spans and spacing before you get started. Menards offers a selection of quality engineered products available in a variety of styles and sizes.

Maximum floor joist span for no. Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. The floor joist span tables are based on the loadings given in the amended version of bs 6399 1 which is an imposed load of either a uniformly distributed load of 1 5 kn m or a concentrated load of 1 4 kn. This also reduces the need and cost for extra bearing posts beams and footings.

Other span tables are based on the guidance given in bs 5268 7 1 which is a uniformly distributed load of 1 5kn m for spans greater than. Dead load weight of structure and fixed loads 10 lbs ft 2. Larger plate widths cause a reduction in duct sizes. 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.

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. Over 51 sizes styles in stock. May duct openings for fan style floor trusses with 4x2 or 3x2 chords webs all dimensions in inches depth. 1 ft 0 3048 m.

Chase sizes are maximum possible for centered openings. Floors 18 encyclopedia of trusses maximum duct dimensions are based on a truss plate width of 4 inches. Custom trusses up to 100 span. In addition we carry a wide selection of lumber and boards.