##### Asked by: Aouatef Hermana

asked in category: General Last Updated: 19th March, 2020# How far apart do you put floor joists?

**floor joists are**spaced 16 inches

**apart**on center. This means from the center of one upright

**joist**to the center of the next. Given that 2x8s

**are**actually 1-¾ inches

**wide**, it works out to be 14-¼ inches

**between**each

**joist**. With some structures,

**floor joists are**required to be 12 or 24 inches

**apart**on center.

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Herein, how far can you span a 2x6 floor joist?

Max. Live Load 30 lbs/ft2 (1436 N/m2)

Maximum Span (ft - in) | ||
---|---|---|

Nominal Size (inches) | Joist Spacing Center to Center (inches) | Lumber Grade |

2 x 6 | 16 | 10' - 11" |

24 | 9' - 7" | |

2 x 8 | 12 | 15' - 10" |

Similarly, how far can a 2x10 span without support? 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.

In this regard, how long can floor joists be without support?

A live load of 60 pounds per square foot demands more ** support ** and shorter spans. Spaced at 12 inches, the ** joist ** may only span 16 feet 8 inches. At 16 inch spacing, 15 feet 2 inches and 13 feet 3 inches at 24 inch spacing.

How far can a 2x6 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.