## How far can a 2X8 ridge beam span?

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Span is determined by species, grade, dimensions, spacing, use, and load. A rule of thumb is 1.5 times a joist’s depth but in feet when spaced at 16” centers. In general, a 2×8 will span 1.5 x 8, so 12-feet.

## How do you size a ridge beam?

Ridge beam sizing is based on the span of the beam between supports, and the amount of roof load supported by the beam. A ridge board is a non-structural member that serves as a prop for opposing rafters to rest against and connect to. Ridge boards can only be used in roofs with slopes from 3 in 12 up to 12 in 12.

**How far can a 4X12 beam span without support?**

Dimensional Lumber Deck Beam Span Chart

Joist Spans | ||
---|---|---|

Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir, Redwood, Cedars, Ponderosa Pine, Red Pine | 4X10 | 8′-4″ |

4X12 | 9′-8″ | |

3-2X6 | 6′-5″ | |

3-2X8 |

### How big of a beam do I need to span 10 feet?

Thus, for a 10 foot span, you will need atleast 3-2×8 or 6×8 size of wood beam. For a 10-foot spans, the wood beam has to be at least 8 inches in depth and 6″ in width (3-2×8) used for residential building or projects.

### How far can I span a 2×10?

How Far Can a 2×10 Beam or Header Span? A 2×10 beam – made up of two 2x10s nailed together – can span up to 11′ without support beneath a deck that is 4′ wide. For a more normal-sized deck, the same beam can span 8′, supporting a deck that is 8′ wide.

**How far can a 2×10 joist span?**

Douglas fir 2-by-10 joists graded as “Structural Select” allows joist spans up to 21 feet for a live load of 30 pounds per square foot when spaced 12 inches apart, 19 feet 1 inch for 16 inch spacing and 16 feet 8 inches for 24 inch spacing.

#### How far can a triple 2×8 ridge beam span?

Using this rule, a 2×6 will span 9 feet, a 2×8 will span 12 feet, and a 2×10 will span 15 feet. As you can see, the larger the depth, the longer the span.

#### What size lumber can span 10 feet?

What size floor joist to span 10 feet:- as per general rules and guideline, a 2×6 (2-by-6) size of floor joists made of southern yellow pine, graded as #1 can allows joist spans up to 10 feet for a live load of 30 pounds per square foot and dead load of 10 pounds per square foot when spaced 16 inches apart.

**Can a 6X6 span 10 feet?**

To answer you question, no a 6X6 will not carry that span, even if you have only a roof to support. The strength is in the height of the beam, not so much for the width.