structural composite lumber and termites

Parallel Strand Lumber (PSL) - CWCParallel strand lumber (PSL) is a high strength structural composite lumber product manufactured by gluing strands of wood together under pressure. It is a proprietary product marketed under the trade name Parallam . Because it is a glued-manufactured product, PSL can be made in long lengths but it is usually limited to 20m (66 ft.) by transportation constraints. Manufactured at a moisture content of 11 percent, which is approximately the equilibrium moisture content of wood in most ...

borate-treated wood for construction - The Canadian Wood CouncilWood in its natural state has been a reliable construction material since the beginning of civilization. However, because wood is a natu- ral, organic material, it is at risk of biodeterioration in certain circumstances for example, in wet conditions or in areas with a high termite hazard. Wood can be protected from attack by pests with preservative treat- ment. Treated wood has long been used for decks, fences and other outdoor structures. In some cases, where risk of damage due to in-.

Designing for Durability - American Wood Councilof structural composite lumber products, are enabling increased dimensional stability .... the country where termites pose a significant problem, building codes require the use ..... species known as the Formosan subterranean termite. Though found only in the southern. Designed by tvsdesign, the Branson Convention Center in Branson, Missouri, features a large overhanging roof. By sheltering the wood underneath, the roof deflects precipitation and helps to ensure long-term durability ...

Sizes Available - CWC - The Canadian Wood CouncilThe stock sizes available for PSL are intended to be compatible with established wood framing materials and standard dimensions. Stock PSL sizes for beams and columns are shown in the following Table. Table 1: Typical Dimensions of Parallel Strand lumber (PSL). Click to enlarge. Download this Table as a PDF. PSL beams are sold in thicknesses of 44mm (1-3/4), 68mm (2-11/16), 89mm (3-1/2), 133mm (5-1/4), and 178mm (7). The smaller thicknesses can be used ...

About Termites - CWC - The Canadian Wood CouncilThree types of termites can be distinguished on the basis of their moisture requirements: Damp-wood termites. Dry-wood termites. Subterranean termites. termites. Damp-wood termites are particularly prevalent in coastal British Columbia and the Pacific Northwest of the USA. They only attack decaying wood and can be controlled by eliminating the moisture source which has lead to decay. They are rarely a problem in buildings. termites2. Dry-wood termites on the other hand, need ...

Choose Wood Materials Carefully To Prevent Termites and Rot ...Unprotected wood used outdoors for decks or landcaping can be damaged by termites and decay. To increase the longevity of wood, homeowners have several options, including several types of pressure-treated wood, naturally resistant wood and composite materials made of wood and plastic. Pressure-treated lumber. ... The decision to phase CCA-treated wood for residential structures has people asking what to do with existing structures made of this material. The EPA does not ...

Termite Manualhome.inddto prevent termite tubing. Experts recommend an 18-inch vertical distance between the soil and structural wood. Slab. Slab construction results in structural wood timbers fairly close to the soil level and makes this type of construction at high risk of termite infestations. Common construction techniques serve to create termite entry into the structural part of the home. When framing wall

termiteresistant construction and building materials - CtaHrthe perimeter of the structure to prevent penetration by foraging subterranean termites. 4) Possible installation of a network .... structure. More typically in North America, where termites are not typically as serious a problem as in. Hawaii, only the wood framing closest to the ground (such as the sill plate and the substructure wall framing) must be preservative treated. .... composite lumber may still be subject to fungal decay (Morris and Cooper, 1998), and even cement/ wood composites ...

Termite Resistant Wood 101 - PestkilledTermite Resistant Wood 101. termites Eating Wooden Post. Photo Credit: giovzaid85. Especially in warmer climates, termites are a constant threat even to the most skillfully crafted wood structures. Termite damage isn't inevitable, though. Choosing termite ... composite lumber, made by combining waste wood fiber and plastic, is completely impervious to termites. Offering the beauty of natural wood at a lower cost, composite lumber is popular for use in decks, furniture, and siding.

Laminated Veneer Lumber - CWCHowever, when it is desired to use LVL in applications where appearance is important, common wood finishing techniques can be used to accent grain and to protect the wood surface. In finished appearance, LVL resembles plywood or lumber on the beam face. Other uses include scaffold planking and as flange members for some proprietary prefabricated wood I-joists. LVL has also been used as distribution and transmission cross arms in utility structure box shaped roadway sign ...

Laminated Strand Lumber (LSL) - CWCLaminated Strand lumber (LSL) is the latest engineered wood product to come onto the market. This revolutionary product is used for a broad range of applications including rim board, millwork and window, door and garage door headers, as well as for many industrial uses. New uses for this product are still evolving, including the use of LSL for vertical members in commercial applications where the framing member heights are long, and the wind loads are substantial. LSL resembles ...

Developing Termite-resistant Structural Wood-based Panels for ...4 May 2005 ... Formosan subterranean termites pose a growing threat to all structural wood materials in residential construction. The species is one of the most aggressive and voracious insects in the world. Chemical treatments of wood with chromated copper arsenate and borate have been effective against the termites. structural lumber and plywood can be successfully pressure-treated with these chemicals, and both are widely used in Louisiana. structural composite panels ...

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