##### Asked by: Eva Timmermans

asked in category: General Last Updated: 26th March, 2021# How far can a triple 2x12 beam span?

**feet**for a triple 2x12.

Simply so, how far can a 2x12 beam span?

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. A double **2x12 beam can span** 12 feet; a (2) 2x10 **can span** 10 feet and so on.

Also, how far can a triple 2x6 beam span? A **triple 2x6 beam** over a **span** of 10' feet should be more than sufficient for normal deck loads.

Hereof, what size lumber can span 20 feet?

Re: **20** foot clearspan beam **size** In that case, you need something like a 12-16" GLULAM or LVL to **span** the **20**' and **can** use simple 2x8-10 dimensional **lumber** 16"OC as floor joists.

How far can a 2x8 beam span without support?

In general terms, joists spaced 16 inches on center **can span** 1.5 times in feet their depth in inches. A **2x8** up to 12 feet; **2x10** to 15 feet and 2x12 to 18 feet. The larger the deck, the larger the joists.