Glulam beams and grade
Glulam beams and grade
(OP)
Are glulam beams typically a certain grade? Or can they come in any of the following grades?
DF SS
DF#1 & Btr
DF#1
DF#2
2.0E Parallam
1.9E Microllam LVL
24F-V4
24F-V8
20F-V12
20F-V13
DF SS
DF#1 & Btr
DF#1
DF#2
2.0E Parallam
1.9E Microllam LVL
24F-V4
24F-V8
20F-V12
20F-V13






RE: Glulam beams and grade
RE: Glulam beams and grade
RE: Glulam beams and grade
Give your applicable code a read and they should describe all of this for you. Not sure where's you're situated, but in N.A. either the NDS (in the U.S.) or the Wood Design Manual (In Canada) would have an adequate description that would answer these basic questions.
RE: Glulam beams and grade
RE: Glulam beams and grade
24F-V4
24F-V8
20F-V12
20F-V13
are typical set specifications for glue lam beams and columns. In the US, you can find these in the AF&PA NDS specification, or in the AITC manual.
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RE: Glulam beams and grade
RE: Glulam beams and grade
RE: Glulam beams and grade
RE: Glulam beams and grade
only these in your list are glued-laminated specs
24F-V4
24F-V8
20F-V12
20F-V13
the first two digits followed by "F" are shorthand for the bending strength or the main tension face in loading perpendicular to the laminations. The "V" indicates visually graded lumber. The combined designation "V4, V8, V12, V13..." etcetera is the combination symbol. The combination is a precise code-ratified specification that indicates the variety of strength requirements for each of the various laminations of a glulam beam. An inner lamination of a beam designed primarily for bending may have significantly less capacity than the outer lamination. The compression face lamination of a 24-V4 beam may have only 50% tension in bending capacity of the tension face.
Contact apa-ews or any good wood book for full information.
RE: Glulam beams and grade
assuming your building's locality is in southern California based upon your other thread, which locks in the geography,
and assuming your beams are supporting SSI joists as based in your other thread, which locks in the era,
your glulam beams are DF 24F-V4 and DF 24F-V8