At any rate, a pair of **1-3/4″ microlam (or laminated veneer lumber–LVL) beams** will almost certainly suffice. The only question is what the height needs to be for your load.

## What size beam do I need for a 16 foot span?

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.

## Can you span 16 feet with a 2×8?

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**. Based on all factors though, a 2×8 joist span is 7′-1” to 16′-6”, and a rafter 6′-7” and 23′-9”.

## How far can a triple 2×8 beam span without support?

How far can a triple 2×8 beam span:- as per general rules and guidelines, #2 grade southern pine of a triple 2×8 deck beam can span upto **10 to 11 feet** when total load of 50 psf (40 psf live load + 10 psf dead load) with deflection limit L/360.

## What size beam can 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 lumber will span 16 feet?

Max. Live Load 60 lbs/ft2 (2873 N/m2)

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

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

2 x 8 | 24 | 10′ – 5″ |

2 x 10 | 12 | 16′ – 8″ |

16 | 15′ – 2″ |

## How big of a header do I need for a 16 foot span?

What size LVL header size for 16 foot span:- as per general thumb rule and guidelines for a 16 foot span, size of LVL header or GLULAM should be 14 to 16 inches deep and 3.5 inches wide, thus you need something like **2- 1.75″× 16″ (2- 1 3/4″× 16″)** GLULAM or LVL header to span upto 16 feet.

## How far can a doubled up 2×8 span?

Doubling 2×8 floor joists can extend the span **around 25 percent** with other factors identical. As an example, this means that a single floor joist with a span of 9′ would have a span of 11′ 2” when doubled. You can even triple the 2×8 floor joists for an even greater span.

## How many rafters do I need for a 16 foot span?

As per general rules and guideline, for 10 -12 foot span, generally you need 2″×6″ size of rafter, for 15 -16 foot span, you need **2″×8″ rafter**, for 18 – 20 foot span, you need 2″×10″ rafter & for 24 foot span, you need 2″×6″ size of rafter placed at 16″ apart from centre.

## How much weight can a 2×8 beam hold?

Weight supported by a double or triple wood headers.

Span (feet) | Weight Supported (lb) | |
---|---|---|

2 x 2″ x 6″ | 3 x 2″ x 8″ | |

4 | 2250 | 5850 |

6 | 1680 | 4690 |

8 |
3990 |

## What size beam can span 18 feet?

Thus, for a 18 foot span, you will need atleast **3-2×16 or 6×16** size of wood beam. For a 18-foot spans, the wood beam has to be at least 16 inches in depth and 6″ in width (3-2×16) used for residential building, wood frame structure or projects.

## Can a 2×12 span 16 feet?

**A 2×12 (2-by-12) floor joists can span up to 23 feet 3 inches**, 2×10 (2-by-10) up to 19 feet 1 inches, 2×8 (2-by-8) up to 15 feet & 2×6 (2-by-6) up to 11 feet 4 inches at 16″ spaced by using southern yellow pine graded as #1 when live load of 30 lbs/ft^2 & dead load of 10 lbs/ ft^2.

## What size header is needed for a 15 foot span?

How far can a **4×12** header span:- as per general rules and guidelines, nominal size of a 4×12 header can span upto 12 feet. Thus, 12 feet is maximum allowable span for 4×12 size header. Therefore, for a span upto 12 foot, you needed 4×12 size header.

## Can a 2×10 span 16 feet?

How Far Can a 2×10 Span Without Support? **An SYP (Southern Yellow Pine) 2×10 lumber span can reach up to 14′ when used as a joist with 16” spacing**. If using SPF or Redwood lumber, then the span maximum for the same distances will be half to a full foot less.

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

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.

## How do you calculate beam size?

Calculate the maximum bending moment for the wooden beams. **The bending moment is the length of the span times the weight to be supported divided by 8**. For a beam spanning a 12-foot room and supporting a weight of 600 lbs., the maximum bending moment would be 12 x 600/8 = 900 foot-pounds.

## What size 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.

## How do you make a double 2×8 beam?

Quote from the video:

Quote from Youtube video: *Right about in the center of that 12 footer and then all we're going to have to do is cut up approximately two six-foot pieces at the end to make this one the twenty.*

## How do you make a 20 foot beam?

Quote from the video:

Quote from Youtube video: *You'll want to get four two by twelves to make this beam whether in 20 foot long.*