![]() Premiumīeing at the top of the appearance grade classification, it is bit costly in comparison to other grade of glulam. All exposes faces are sanded for smooth finish. Manufacturers repair the laminations for any holes and defects using inserts and wooden fillers. So, the any holes or voids larger than ¾” are filled and covered. ArchitecturalĪs the name implies, this grade of glulam is ideal for applications where beam will remain visible to people. ![]() ![]() You should use industrial grade for areas that’s not visible for general public. Anyhow, the finish of industrial grade glulam is better than for the framing grade. It can have loose knots and knot holes along the wide face of laminations but you can fill that with putty. Hence, this classification is only used for applications where appearance is not a primary concern. Industrial grade glulam can have imperfections on the surface. The framing grade has more irregularities than the architectural grade. Framing grade glulam beams have a width to fit flush with framing of wall 2×4 and 2×6. It is specified with dimension lumber and is only recommended for concealed areas that will be later covered with drywall or other suitable finishing product. You can design glulam beam for any longer spans, heavy loading, and other design circumstances.Īs per the American National Standards Institute (ANSI) A190.1 (2017s), glulam material comes in four different grades related to their appearance as:Īlso Read: What is a flitch Beam? – Purpose – Benefits – Thickness (Know ALL) Framingįor typical house construction and residential framing projects, framing appearance glulam grade is a common choice. But for most commercial and industrial applications, custom sizes can be easily made. The most common sizes of glulam beam available for residential construction projects include 3-1/8, 3-1/2, 5-1/8, 5-1/2, 6-3/4 and 7 inches (representing the width of the glulam beam). This classification is based upon the appearance of glulam beam and has nothing to do with its strength. Three common categories of glulam beam are suitable for premium, architectural, industrial, or framing. It is widely used these days both for commercial as well as residential timber projects.Īlso Read: Bond beam in masonry walls – Design – Size – Foundation – Pros & Cons What is a glulam Beam Sizes and Gradesĭepending on the type of application, different sizes of glulam beams are available in the market. Such efficient use of lumber make glulam beam as a versatile and innovative construction material. So, the strongest lam will typically go along the bottom and top of the beam to take care of the maximum compressive and tensile stresses. We use high-grade lumber along zones of maximum stress and low-grade lumber along zones of low-stresses of the beam. They’re engineered wood products (EWP) that are made with emphasis for efficient use of lumber corresponding to stresses. Glulam beams are designed to cater for typical beam stresses – including flexural and compressive stresses. Hence, they’re named as “Glu”+ “lam” as Glulam.Īlso Read: Ridge beam – Size – Definition – Span – Span Table – Calculator Glulam Beam Basics The wooden laminations or lams are bonded together with glue that is industrial adhesives. Glulam beam is an engineered wooden beam that consists of multiple layers of solid wood laminations put together with strong adhesives. There’re number of types of laminated beams or laminated wood materials – Builders consider all such timber products under the name “glulam beams or glulams”. It’s an engineered wood that is made with layers of solid wood put together using high-strength adhesives making one structural unit. Glulam is a short form of “glue-laminated-timber” (Glu-Lam). Well, if you’re new to wood framing, you might not know what glulam is. But what are glulam beams and what exactly are they used for? ![]() So, while you’re looking to undertake a timber framing project, you got number of choices from LVL, Solid wood beam, Steel, and Glulam beam.
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