What are the aesthetic considerations for using wood in playground design?

MSR lumber must meet or exceed specific strength and visual characteristics set by the American Lumber Standard Committee. These boards undergo more testing, ... The grading is the bending pounds per square inch (psi) the lumber can withstand. Higher grades carry more stiffness. This lumber has been selected for strength ... ... lumber (as opposed to the bivariate distribution of visual or MSR grades of lumber). We felt that it was important to investigate this assumption. In the ... We also specialize in sourcing and marketing all grades of SPF and DFL dimensional lumber. We source Canadian and US supply and market these products ... Jun 17, 2024 ... (2) Approximately 44% of the trembling aspen lumber met the 1450f-1.3E grade for MSR lumber, and 62% qualified for the 1200f-1.2E grade. (3) ... Western Wood Products Association (WWPA) has provided procedures for the quality control of specific gravity of MSR lumber grades at mills since 1996. Weston Forest is a leading full service distributor of commodity and MSR lumber to truss manufacturers in eastern Canada and the Great Lakes states. Feb 15, 2017 ... MSR lumber shall meet the visual requirements as set forth in this Standard and the current edition of the NLGA. Standard Grading Rules. It is extremely accurate, operating at mill speeds to determine MoE values that allow mills to sort dimensional lumber by strength and stiffness to improve ... MSR is lumber that has modulus of elasticity E evaluated by mechanical stress equipment, with each piece being marked to indicate the modulus of elasticity E.