4x6 Span For Floor Beam

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.

4x6 span for floor beam. 1 psf lb f ft 2 47 88 n m 2. 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. A 2 2x10 can span 10 feet and so on. The lengths and sizes of joists vary depending on the species and quality of the lumber used.

I need to know if i should use 4x6 4x8 4x10 or 4x12 beams for hip rafters for a hexagon gazebo has 6 side lengths of 10 floor area of 259 81 ft comprising of 6 triangular segments each having ce read more. Let s expand our house beyond that 17 2 span capability to 24 feet wide. Joist span and spacing is set by your local building code. Dimensional lumber deck beam span chart.

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. The numbers in gray indicate the distance between the support posts. Maximum floor joist span for no. Wood beam calculator american wood council website rafter and joist span faq.

True floor joist span calculations can only be made by a structural engineer or contractor. A redwood 4x6 beam should span no more than 6 between supporting posts. Beam span calculator for help simply click on the beside the section you need help with watch this tutorial video. A double 2x12 beam can span 12 feet.

So the house dimensions will now be 24 x 13. Lumber species southern pine douglas fir douglas fir larch hemlock fir spruce pine fir redwood western cedar ponderosa pine red pine. For example you can span a 1 grade no knots southern yellow pine a greater distance than a 2 grade with knots. When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches.

Obviously the larger the beam the greater the distance it can span between posts. The widest span in the floor joist span table in part 2 of this tutorial module showed that floor joists can span 17 2 if they are 2 x 12s spaced 12 o c. 2 grade of douglas fir are indicated below. Live load is weight of furniture wind snow and more.

Refer to the deck beam span table below to assist in determining the maximum span of a given beam between posts.