Floor Trusses Sizes

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.

Floor trusses sizes. 2 grade of douglas fir are indicated below. 1 ft 0 3048 m. Menards offers a selection of quality engineered products available in a variety of styles and sizes. Engineered wood products ewp span and size charts for bci joists.

Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. Joist span and spacing is set by your local building code. 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. Live load is weight of furniture wind snow and more.

Dead load weight of structure and fixed loads 10 lbs ft 2. 1 psf lb f ft 2 47 88 n m 2. Yellow pine douglas fir redwood hemlock spruce. 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.

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. Maximum floor joist span for no. Roof floor truss manual 7 31. 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.

Floors 18 encyclopedia of trusses maximum duct dimensions are based on a truss plate width of 4 inches. This also reduces the need and cost for extra bearing posts beams and footings. May duct openings for fan style floor trusses with 4x2 or 3x2 chords webs all dimensions in inches depth. We offer roof trusses storage building trusses and frames floor trusses and trusses that are immediately available to pick up at one of our conveniently located plants.

Larger plate widths cause a reduction in duct sizes. Custom trusses up to 100 span. In addition we carry a wide selection of lumber and boards. Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring.

Chase sizes are maximum possible for centered openings. No matter the application our variety of truss styles and sizes make it possible for your project to come to fruition. 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. 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.