## What is the standard size of a 4×4 beam?

not present SPAN BEAM SIZE Up to 4′-0" 4X4 4′-1" to 6′-0" 4X6 6′-1" to 8′-0" 4X8 8′-1" to 10′-10" 4X10 1 more rows …

## What size are the floor beams in this span table?

This table is simply a sample and may not be valid for your region. This span table excerpt shows two possible sizes of built-up floor beams (2 X 10 and 2 X 12). The full table shows more lumber sizes.

## How far can a 2×12 beam span?

A double 2×12 beam can span 12 feet; a (2) 2×10 can span 10 feet and so on. Dimensional Lumber Deck Beam Span Chart The numbers in gray indicate the distance between the support posts. Numbers in blue are joist spans (beam to beam or house to beam)

## What is the widest floor beam span for supported joists?

In the table above, the widest floor beam span for 12′ of supported floor joists is 14’7" (if using a 5-ply 2 X 12). What if we needed to span more than that?