6x6 Beam Span Chart
Numbers in blue are joist spans beam to beam or house to beam.
6x6 beam span chart. Beam may be solely responsible for carrying a specific design load. Lumber species southern pine douglas fir douglas fir larch hemlock fir spruce pine fir redwood western cedar ponderosa pine red pine. A double 2x12 beam can span 12 feet.
Douglas fir is one of the most widely used and strongest wood species commonly used for six by six lumber sometimes marketed as hem fir or fir larch because of its close association with hemlock and larch spruce runs a close second with respect to wood strength. Beam span calculator for help simply click on the beside the section you need help with watch this tutorial video. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Refer to the deck beam span table below to assist in determining the maximum span of a given beam between posts. A redwood 4x6 beam should span no more than 6 between supporting posts. A 2 2x10 can span 10 feet and so on.
The numbers in gray indicate the distance between the support posts. Repetitive member fb design values are used in design when three or more load sharing members such as joists rafters or studs are spaced no more than 24 apart and are joined by floor ing sheathing or other load distributing elements. Dimensional lumber deck beam span chart.