## How far can beams span on a deck?

Joists spaced the standard 16 inches apart can span 1.5 times their depth in feet. A 2×6 joist can span up to 9 feet, a 2×8 can span up to 12 feet, and a 2×10 can span up to 15 feet.

**How long can you span a steel beam?**

Structure steel is a versatile building material, though it can be used in great variety of ways. The most economic span range for conventional steel floor and roof framing is from 10 to 32 feet.

### How far can a deck beam span without support?

For a deck with a maximum live load of 40 pounds per square foot and a dead load of 10 pounds per square foot (for a total load of 50 pounds per square foot), the maximum span is 9 feet 5 inches for a No. 1 quality 2×6 joist spaced 16 inches apart.

**What size should a beam for a deck be?**

For an 8′ joist span, either 2x8s at 24” O.C. or 2x6s at 16” O.C. are acceptable. For sizing the beam, use a joist length of 10′ (8’+2′) and a posting spacing of 10′. The Beam Size table indicates that the beam may be either two 2x10s or two 2x12s, depending on wood used.

## How big of a beam do I need to span 20 feet?

For a 20 foot span, you will need atleast 4-2×16 or 8×16 size of wood beam. Thus, a 4 nailed 2×16 or 4-2×16 or 8×16 wood beam can allow to span 20 feet.

**How far can a 2×10 beam span without support?**

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.

### What size steel beam can span 20 feet?

What size beam to span 20 ft:- as per general thumb rule and guidelines, a 4 nailed 2×16 or 4-2×16 or 8×16 size of wood beam can allow to span 20 ft. Thus, for a 20 foot span, you will need atleast 4-2×16 or 8×16 size of wood beam.

**What size steel beam do I need to span 24 feet?**

Steel beam size for a 24 foot span:- as per general thumb rule, for a 24 foot span size of steel beam or universal beam or w beam or I beam or UB’s or hot rolled section should be ISMB 350 or UB 350×140 (12″×6″) or W14 used for residential building or projects or construction in which depth of section of beam is 350mm …

## How big of a beam do I need to span 16 feet?

For a 16 foot span, you will need atleast 3-2×14 or 6×14 size of wood beam. Thus, a 3 nailed 2×14 or 3-2×14 or 6×14 wood beam can allow to span 16 feet. For a 16-foot spans, the wood beam has to be at least 14 inches in depth and 6″ in width (3-2×14) used for residential building, wood frame structure or projects.

**What size steel beam do I need to span 16 feet?**

For a 16 foot span, you will need atleast 3-2×14 or 6×14 size of wood beam. Thus, a 3 nailed 2×14 or 3-2×14 or 6×14 wood beam can allow to span 16 feet.

### Can a 2×10 span 20 feet?

A #2-2×10 joist can span between 11′-5” and 18′-0”, as a rafter between 13′-9” and 21′-7”, and as a beam 3′-6” and 13′-0” or more. The span depends on spacing, lumber species, and grade, and for a beam, the lamination thickness, as well as numerous other factors.

**How big of a beam do I need for a 20 foot span?**

## What size beam do I need to span 25 feet?

Wood beam size for a 25 foot span:- as per general thumb rule, for a 25 foot span, size of wood beam or lumber joist should be 2×16 which placed at 16″ apart from centre used for residential building or projects or construction in which depth of section of beam is 400mm (16″) and width of beam is 50 mm or 2″.

**What size steel beam do I need to span 15 feet?**

Thus, for a 15 foot span, you will need atleast 3-2×12 or 6×12 size of wood beam. For a 15-foot spans, the wood beam has to be at least 12 inches in depth and 6″ in width (3-2×12) used for residential building, wood frame structure or projects.

### What size steel beam do I need to span 14 feet?

What size beam to span 14 ft:- as per general thumb rule and guidelines, a 3 nailed 2×12 or 3-2×12 or 6×12 size of wood beam can allow to span 14 ft. Thus, for a 14 foot span, you will need atleast 3-2×12 or 6×12 size of wood beam.

**How far can a double 2×10 beam span without support?**

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 I span a triple 2×10 beam?

How Far Can a Triple 2×10 Beam Span? A triple #2 – 2×10 beam of Southern pine can span between 7′-6” and 13′-0” with a live load of 40PSF depending on the joist span. Using DF-L, Hem-Fir, or SPF and the span changes to 7′-2” and 12’6” under the same conditions.