![]() 2 Stress grade, and wet service conditions. 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. 1.9E Microllam® LVL headers and beams are available in the following sizes: Width: 1¾. Flexible solutions for your beam and header need. ![]() Beam span maximums are based on a maximum anticipated live load as well as other factors. Consistent quality and dependable uniformity. Span values assume 2332' minimum plywood/OSB rated sheathing is glued and nailed to joists for composite action (joists spaced at 32' o.c. Select the application below you are looking to calculate. 4 Residential Floor Span Tables Span table is based on a residential floor load of 40 psf live load and 10 psf dead load (12 psf dead load for 90s 2.0 joists). 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. Use these simple calculators to size Trus Joist TimberStrand LSL and Parallam PSL beams and headers. Simplified span tables for Southern Pine lumber and glued laminated timber. A structurally adequate bearing surface under the full width (thickness) of the member must be provided at each support. Header spans are measured from the inside face of the supports the rough opening. Because the system is composed of two pieces. Beam spans in this guide are typically measured from center-to-center of supports except for door and window headers. Listed are 46 tables based on common loading conditions for floor joists, ceiling joists and rafters. Design of cantilever beams involves many variables including load, cantilever span and interior or back span. ![]() 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. Simplified maximum span tables for selected visual and mechanical grades of Southern Pine lumber in sizes 2×4 thru 2×12. Versa-Lam LVL Beams Versa-Lam LVL Columns 1' Versa-StudLVL Grade 2.1E 3100 1.8E 2650 1.8E 2650 Modulus of Elasticity True (Shear-Free) E (x 106psi) (1) (7)2.1 1.8 1.8 Modulus of Elasticity Apparent E (x 106psi) (1)2.0 1.7 1.7 Modulus of Elasticity for Stability E min (x 106psi)(1) (8)1.1 0.9 0. beam or on its wide face (weak axis) as a plank.
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