Example Calculation: Lets assume you have an LVL beam with a width of 5 inches, a depth of 12 inches, and it needs to support a uniform load of 1,000 pounds per square foot.
2 Stress grade, and wet service conditions. The program helps the user identify which of Boise Cascade’s engineered wood products join who demands of the application. Review Maximum Safe Span: The calculated maximum safe span for the LVL beam will be displayed on the page. Note: The span chart below is an example of how spans charts are presented. Because building code and lumber spans are updated from time to time, you should always check to make sure the span chart you are using is up to date. See the applicable code section, or the NDS to confirm the span chart you are using is correct.ĭimensional Lumber Deck Beam Spans Supporting a Single Span of Joists with or without Overhangs:Īssumes 40 psf live load, 10 psf dead load, L/360 simple span beam deflection limit, cantilever length L/180 deflection limit, No. The longer the joist, the more area of deck the joist supports, and thus the beam supports more area as well. In addition, many residents prefer the fell of a deck that is designed for higher loads. Building codes for residential decks only require 40 psf in some areas, but check your local requirements to make sure you are aware of any additional local guidelines. Beam span maximums are based on a maximum anticipated live load as well as other factors. Alternatively you can use the Lumberworx design tool. Fewer posts on upper-level decks are typically more desirable to the occupants and this drives the use of larger framing materials for longer spans. /videos/searchqspan+table+for+lvl+beams&qpvtspan+table+for+lvl+beams&FORMVDRE LVL is suitable for the structures of wood, steel and concrete based buildings. Lumberworx has created the span tables below to assist in the specification of the Lumberworx members.
(2) Spans for floor joists that are not selected from Tables A-1 and A-2 and that are required. The span of a beam is dependent on a few variables: The grade and species of lumber, size of lumber and the load it carries. (1) Except as required in Sentence (2) and Article 9.23.13.10., the spans for wood joists and rafters shall conform to the spans shown in Tables A-1 to A-7 for the uniform live loads shown in the Tables.