The most important is the fact that the presence of knots and the related disturbed grain is just one of many criteria used to grade structural lumber
. Other characteristics evaluated include slope of grain away from the knot vicinity, presence of wane, shape distortions (particularly crooked pieces), and cutting marks.
N.E.W.'s lumber business, RENEW Plastics has three brands, Evolve lumber, which is 100% HDPE; Revolve engineered composite; and Trimax structural lumber
. Trimax, which accounts for about 20% of RENEW's lumber business, consists of HDPE and 30% chopped glass fiber.
Some carbon continues to be stored in longer-lived wood products, such as structural lumber
The modulus of elasticity of structural lumber
can be determined from the static bending test, as established by ASTM D198 (ASTM, 2008).
For Great Western Lumber, that niche is structural lumber
and high-quality pieces for export.
Whether a company is in the business of making mouldings, panels, dimension or structural lumber
, now is the time to take advantage of the ever-volatile lumber market.
in April of 2006, the company has focused on retaining its position as one of the nations leading makers of HDPE building materials used in structural lumber
, transportation, marina and residential decking applications.
Once the pine beetle kill has run its course, sawmills that produce structural lumber
, already slowed by the soft housing market in the U.S., will go into serious decline.
FPL provided specs for using small-diameter red pine in whole log form, taking advantage of trees otherwise too small for structural lumber
Fred Kamke, composites researcher with Virginia Tech's Brooks Forest Products Center, says the fastest-growing segment of the wood-based composites industry is structural lumber
The Teal-Jones Group, a fully integrated forest company, offers a line of cedar shakes and shingles, as well as dimensional lumber, timbers and posts, structural lumber
, cedar decking, and siding.
Decks consist of a foundation that is supported on an existing building or by a structural system anchored in the earth, a framework of structural lumber
, and surfacing on which one can safely walk.