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.