How do I know what size LVL beam I need?
Mia Kelly
Published Jan 14, 2026
Design a beam depth based on the rule of thumb for estimating the depth of manufactured beams which is to divide the span by 20. Beam depths are typically 5 1/2 inches, 7 1/4 inches, 9 1/4 inches, 11 1/4 inches, 11 7/8 inches, 14 inches, 16 inches, 18 inches, and 20 inches.
How big of an LVL beam do I need?
What size lvl beam for a 20 foot span:- as per general thumb rule, for a 20 foot span, size of LVL beam or GLULAM should be 10 to 12 inches deep and 3-1/2 inches or 2ply wide, thus you need something like a 10-12″ GLULAM or LVL to span upto 20 feet and can use simple 2×14 dimensional lumber at 16″ apart from centre as ...
What size LVL Do I need to span 14 feet?
What size LVL header size for 14 foot span:- as per general thumb rule and guidelines for a 14 foot span, size of LVL header or GLULAM should be 14 inches deep and 3.5 inches wide, thus you need something like 2- 1.75″× 14″ (2- 1 3/4″× 12″) GLULAM or LVL header to span upto 14 feet.
What size LVL Do I need to span 18 feet?
For span upto 18 feet, generally you need 3 × 9 1/4 standard size of LVL beam or 2×12 dimensional lumber at 16″ apart from centre on normal weight condition which providing great stability for your projects.
What size LVL Do I need to span 12?
What size LVL header for 12 foot span:- as per general thumb rule, for a 12 foot span, size of LVL header or GLULAM should be 10 to 12 inches deep and 3.5 inches wide, thus you need something like 2- 1.75″×14″ GLULAM or LVL header to span upto 12 feet.
45 related questions foundWhat size LVL Do I need to span 24 feet?
LVL beam size for a 24 foot span:- as per general thumb rule, for a 24 foot span, size of LVL beam or GLULAM should be 12-14 inches deep and 4 inches wide, thus you need something like a 12-14″ GLULAM or LVL to span upto 24 feet used for residential building or projects.
What size LVL Do I need to span 30 feet?
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.
How far will a 2x12 LVL span?
As per general thumb rule and guidelines, a double 12″ lvl beam can allow span upto 20 feet far distance used for residential building or projects.
How far can a LVL span without support?
Some manufacturers limit their beams to 60' due to transportation issues, while others have the capability to manufacture beams up to 80' long. So, the longest unsupported span possible using LVL would be 80-feet. Typically, though, it is common for a continuous LVL span to be between 20' and 30'.
How far can a 16 LVL span?
Due to its strength, an LVL beam can span up to 60 feet and is much stronger than traditional lumber.
How much does a LVL beam weight per foot?
Laminated veneer lumber or a LVL beam can weigh about 41 pounds per cubic foot or 3.42 pounds per board foot and their weight per linear foot are different for different size of LVL beam.
Is GLULAM the same as LVL?
A glulam beam looks like a stack of 2 x 4s (or larger lumber) glued together on their broadsides. This is in contrast to other engineered members, such as LVL (laminated veneer lumber) and Microlam beams, which look like very thick plywood, with very thin layers of wood glued together to form a thicker mass.
How much does a 20 foot LVL beam cost?
The LVL beam thickness is usually between 1.75 and 7 inches. The price for beams that fit 10 feet of space will range from $3 to $5 per linear foot, while a 20-feet span will need a beam that costs $6 to $11 per linear foot.
Is LVL stronger than dimensional lumber?
Laminated veneer lumber (LVL) studs can be two times stronger in compression and tension than standard framing lumber of the same dimension.
What is a 3 ply LVL beam?
What is a 3 ply lvl:- 3 ply lvl means, the lvl which are made of laminating of 3 single ply LVL of thickness 1- 3/4″ such that 1-3/4″ + 1- 3/4″ + 1 -3/4″ = 5 -1/4″ or 1 two ply LVL of thickness 3- 1/2″ and 1 ply (1 -3/4″) such that 3-1/2″ + 1- 3/4″ = 5 -1/4″.
Can you screw into LVL beam?
Whenever possible, avoid drilling vertical holes through LVL beams unless the beam width is at least 3-1/2 inches. Prior to drilling any vertical holes, an engineer or architect qualified in wood design should be consulted.
How big of a beam do I need to span 20 feet?
For a 20-foot spans, the wood beam has to be at least 16 inches in depth and 8″ in width (4-2×16) used for residential building or projects.
How far can a triple 2X10 LVL beam span?
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 size a load bearing beam?
Multiply the loading per square foot by the area in square feet of the surface which the beams will be supporting. Divide by the number of beams which will be installed to get the loading per beam.
How much does a 40 foot I-beam cost?
Installing steel I-beams costs $100 to $400 per square foot for labor and materials. Materials alone will be less expensive, so if you have the time and skills for a major DIY project, that can help to cut costs. A 10-foot steel I-beam alone will cost $60 to $180, while a 40-foot beam will cost $240 to $720.
What size beam do I need for a 32 foot span?
For 32 foot span, size of reinforced beam, using thumb rule is 12″×24″ or 16-18″ GLULAM or LVL, 2×18 dimensional lumber/wood beam at 16″ apart from centre as floor joists, ISMB 500 or UB 500×180 or W20 can span upto 32 feet that used in residential building.
How far can a 24 LVL span?
How far can you span a LVL beam? Due to its strength, an LVL beam can span up to 60 feet and is much stronger than traditional lumber. Generally, you can find LVL beams in 4-foot increments starting at 24 feet and going up to 44 feet long, with special orders up to 60 feet.
What size LVL are available?
LVL is available in lengths up to 24.4 m (80 ft), while more common lengths are 14.6 m (48 ft), 17 m (56 ft), 18.3 m (60 ft) and 20.1 m (66 ft). LVL can easily be cut to length at the jobsite. All special cutting, notching or drilling should be done in accordance with manufacturer's recommendations.
Is LVL cheaper than steel?
LVL beams are cheaper than steel beams; however, steel beams take up less space and are easier to install inside a ceiling.