China 
Africa 
Explore chapters and articles related to this topic
Foundations, Framing, Sheathing, and Vapor Barriers
Published in Kathleen Hess-Kosa, Building Materials, 2017
Parallel strand lumber (PSL) consists of long, thin, “parallel strands” (i.e., strips of wood) bonded together with adhesive. It is similar to LVL. The only difference is that PSL is strips of wood as opposed to wide, thin-sliced lumber. Processing and use are the same. Beams can be manufactured up to 60 foot lengths.
Processing and recycling of timber
Published in Marios Soutsos, Peter Domone, Construction Materials, 2017
Parallel strand lumber (PSL) is a North American product in which the 2.5 mm thick rotary peeled veneer of Douglas fir or Southern pine is cut into strands 2.4 m in length and 3 mm in width, which are then coated with a resin, pressed together and microwave cured to produce battens up to 20 m in length.
Timber structures and wood products
Published in Andrew Buchanan, Birgit Östman, Fire Safe Use of Wood in Buildings, 2023
Christian Dagenais, Alar Just, Birgit Östman
PSL is manufactured by gluing wood strands to form a condensed thick piece of timber in such a way that the wood grain of the strands is oriented longitudinally to the main strength direction (i.e. towards the PSL length). Wood strands may be cut from the residue of plywood or LVL manufacturing plants.
Experimental and numerical investigation of timber formwork beam under different loading type
Published in Mechanics Based Design of Structures and Machines, 2022
T. Ünal Dönmez, Abdullah Türer, Özgür Anil, R. Tuğrul Erdem
Such systems have been modularized into components to make the formwork systems easy to use in different structures. This modular approach enables the basic formwork system structure components to be installed effectively in a very short period. In the modular structure of formwork systems, it is one of the most important components formwork beam systems are becoming. Formwork beams are among the most important formwork system components that play an important role in forming formworks and carry their loads during the construction of the structural reinforced concrete system. Besides, the formwork beams are the most used and preferred components in a formwork system. Therefore, the formwork beams which are members intensely used in their lifetime. Within these periods of use, the beams may be under the influence of various types of loading, which create very different effects, such as static, fatigue, and impact loads. Formwork beams are produced by using timber or composite timber materials because they are economical, they are easy to carry because of their lightweight, and they have high resistance. Timber material is widely preferred in the production of such formwork systems since it is a type of material with high durability against environmental influences after being subjected to some processes. Today, instead of using wood material directly, the use of wood-based composite materials is preferred. Structural composite timber has been developed to reduce the consumption of forest resources and to meet the increasing demand for high-quality timber. Structural composite timber is being used as a replacement for raw timber in the manufacture of engineering wood products such as prefabricated wooden I-beams and in other various applications to benefit from higher engineering design values than those offered by the raw timber (Stark, Cai, and Carll 2010). Today, many other wood-based products such as Laminated Veneered Lumber (LVL) and Parallel Strip Lumber (PSL) are used for large-scale timber constructions. Similarly, these products are suitable for larger spans, such as flat glued laminate timber elements (Thelandersson 2003; (Stalnaker and Harris 1999).