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engineering performance requirements. The following tables provide a 1-to-1 comparison between standard CLT grades and layups defined in the PRG 320 and SmartLam products. The listed SmartLam product meets or exceeds the properties of the corresponding PRG 320 grade and layup thickness. SmartLam grades other than those listed can often be
27 Αυγ 2020 · Table 4A Reference Design Values for Visually Graded Dimension Lumber (2" - 4" thick)1,2,3 (All species except Southern Pine — see Table 4B) (Tabulated design values are for normal load duration and dry service conditions. See NDS 4.3 for a comprehensive description of design value adjustment factors.) USE WITH TABLE 4A ADJUSTMENT FACTORS Bending
The recommended design values shown in the accompany-ing tables are for applications where the moisture content of the wood does not exceed 19%. For use conditions where the moisture content of dimension lumber will exceed 19%, the Wet Use Adjustment Factors below are recommended: PROPERTY.
Cross Laminated Timber (CLT) has been manufactured in Europe for over a decade. CLT is a revolutionary building system that substitutes for concrete, masonry and steel in some applications. Ideal for floors, walls, and roofs, CLT has been described as the perfect structural solution.
18 Μαρ 2023 · Dimensional lumber is cut to a specific length, width, and depth. However, there is a difference between the nominal size (what the lumber is referred to) and the actual size. The tables below provide both the nominal and actual lumber dimensions for many common North American lumber sizes.
31 Μαΐ 2023 · Cross Laminated Timber Wood Beams are available in a range of configurations including 3-Ply, 5-Ply, 7-Ply, and 9-Ply. Cross Laminated Timber Wood Beams have widths from 2’-10’ (61-305 cm), depths between 4”-12” (10.2-30.5 cm), and typical lengths between 16’-48’ (4.88-14.63 m).
First you need to get a few things: Code book; AWC’s Span Tables for Joists and Rafters (this assigns allowable spans to various combinations of E and Fb); and a copy of Design Values for Joists and Rafters (this has Fb and E values for various species, sizes and grades of dimension lumber).
