VERSA-LAM ® laminated veneer construction (LVL) beams and headers eliminate twisting, shrinking and separation, plus deliver flatter, quieter floors and structures. Use two nails on each end and at splices. ENGINEERED WOOD PRODUCTS (EWP) LVL SPAN PLUS SIZE CHARTS. Nail each ply of a beam with a minimum of 10d nails. The notch can not exceed 25% of the width of the board. The bottom of any beam may be notched only on its end. Notches on the outer thirds must not exceed 1/6 of the width of the board. Their is no notching permitted in the center third of any beam. Both headers and girders are beams that are oriented horizontally and transfer load down to walls, piers, or posts. Although single plies are permitted they are not recommended. They are often positioned beneath load bearing walls. Headers are found in walls. Girders are found in floor systems spanning across piers and support the weight of floor joists. All other data is available on page 121 of the 2012 International Residential Code. These charts are for 30 pound per square foot snow load on the roof. Includes span tables for all load bearing locations and the number of jack studs. An overview on water drainage, benches, planters and lights. I have passed this on to the homeowner to sort out the details.Span charts and 2012 IRC building codes for girders and headers. Try to get in touch with Scott Levengood - he is a wood extension agent for OSU. Never try to buck the code to please the owner - it can be very expensive, I know. Better to smile and say yes sir and follow the code. It isn't fun to tear something out and replace. From past experience, never use anything that doesn't have a grade stamp or has been approved by an engineer. Sounds like he's being (overly) cautious to me (or covering his butt) - the span and loading are such small values.īeing a builder in Oregon, I can say they (building inspectors) are very strict. "I need a table of comparison for the building inspector." Building code manuals (are you under the IRC code?) have tables for header sizes, and the strength characteristics for the clear species you mention would seem to exceed those of standard SPF lumber typically considered for code span tables. Span tables for Kerto® LVL beams, panels, studs and I-joists help designers work faster and more efficiently. In my experience, using gluelams for a 5 foot span in a single story residential structure would be like using a 50 caliber rifle to shoot a squirrel. "The span needed is only about 5 feet and the load is for a bearing wall on a single story home." A beam is usually not considered riftsawn. And yes, I work at OSU, I just don't know who to ask.Ĭall the head of the OSU Forest Products Lab. Any help you can provide would be appreciated. I need a table of comparison for the building inspector. The span needed is only about 5 feet and the load is for a bearing wall on a single story home. The solid wood beams would be clear rift sawn lumber dried to 9% MC (no defects). For an equal size, it would not surprise me to see gluelam with spans 50% to 200% more. The real issue is, what is the grade of the solid oak and maple beams? With gluelam we can control the quality of the laminations and therefore the overall strength and stiffness within a narrow range. Are there any tables that compare the load bearing and span characteristics of fir glue laminated beams with solid hardwood beams? I am specifically interested in comparing solid Oregon white oak and bigleaf maple beams to commercially available fir glue laminated beams.įrom Professor Gene Wengert, forum technical advisor:Īre you in Oregon? If so, you have some excellent Forest Products Extension people there and also a wonderful Forest Products Lab at OSU.
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