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A 2×12 with an E of 800,000 psi and Fb of 790 psi also works, since it can span 15 feet and 10 inches. Given a design span of 15 feet 1 inch and a 16 inch joist spacing, first determine which size lumber will work.
What is the longest span for a 2×12?
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 12 12 17′ – 5″ 16 15′ – 1″ 24 12′ – 4″.
How far will a double 2×12 beam span?
A double 2×12 beam can span 12 feet; a (2) 2×10 can span 10 feet and so on.
How far can a 2×12 span for a deck?
10″ Joist Spacing (o.c.) 24″ Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir 2×8 9′-1″ 2×10 11′-1″ 2×12 12′-10″ Redwood, Western Cedars, Ponderosa Pine, Red Pine 2×6 6′-10″.
How big of a beam do I need to span 20 feet?
Wood beam size for a 20 foot span:- as per general thumb rule, for a 20 foot span, size of wood beam or lumber joist should be 2×14 which placed at 16″ apart from centre used for residential building or projects or construction in which depth of section of beam is 350mm (14″) and width of beam is 50 mm or 2″.
What size LVL Do I need to span 16 feet?
What size lvl beam for a 16 foot span:- as per general thumb rule, for a 16 foot span, size of LVL beam or GLULAM should be 7 to 8 inches deep and 3 inches wide, thus you need something like a 7-8″ GLULAM or LVL to span upto 16 feet and can use simple 2×10 dimensional lumber at 16″ apart from centre as floor joists.
What size beam do I need to span 24 feet?
Wood beam size for a 24 foot span:- as per general thumb rule, for a 24 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 beam do I need for a 30 foot span?
What size lvl beam for a 30 foot span:- as per general thumb rule, for a 30 foot span, size of LVL beam or GLULAM should be 16-18 inches deep and 4 inches wide, thus you need something like a 16-18″ GLULAM or LVL to span upto 30 feet used for residential building or projects.
What size beam do I need for an 18 foot span?
What size lvl beam for a 18 foot span:- as per general thumb rule, for a 18 foot span, size of LVL beam or GLULAM should be 9 to 10 inches deep and 3 inches wide, thus you need something like a 9-10″ GLULAM or LVL to span upto 18 feet and can use simple 2×12 dimensional lumber at 16″ apart from centre as floor joists.
What size I beam do I need for a 12 foot span?
If the span of the beam is 12 feet, then the depth of the beam will be 12 inches, beam depth taken as 12″ and beam width 12/1.5=8, taking as 9″.
How far can a double 2×12 span without support?
As the table shows, no 2×8’s meet the span and spacing requirements, but a 2×10 with an E of 1,300,000 psi and Fb of 1093 psi can span 15 feet 3 inches – more than enough. A 2×12 with an E of 800,000 psi and Fb of 790 psi also works, since it can span 15 feet and 10 inches.
Can a 2×10 span 16 feet?
The length of one 2×10 joist span depends on the wood species and how far apart it is from the next 2×10. A 2×10 southern yellow pine joist can span 16 feet and 1 inch without support. A doubled 2×10 beam can span 11′ without support for a deck that is 4′ wide.
How much weight can a 2×12 beam hold?
A 2×12 can hold approximately 180 pounds per foot or approximately 2,100 pounds in total.
What size LVL Do I need to span 22 feet?
What size lvl beam for a 22 foot span:- as per general thumb rule, for a 22 foot span, size of LVL beam or GLULAM should be 10 to 12 inches deep and 4 inches wide, thus you need something like a 10-12″ GLULAM or LVL to span upto 22 feet and can use simple 2×14 dimensional lumber at 16″ apart from centre as floor joists.
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″.
How far can a 2×12 span for a pergola?
There’s not quite enough information here to give a definitive answer, but for decks, a rule of thumb is when supporting joists that span 12 feet, a double ply beam can span in feet a value equal to its depth in inches. Thus, a double 2×12 beam could span 12 feet – with 20′ beams, posts at 10′ might look the best.
