What Is Softwood Lumber
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- The 'Softwood Lumber Declaration Program' is required by the Softwood Lumber Act of 2008 (referred to interchangeably as SLA 2008 or SWL 2008), and affects importations of certain softwood lumber and softwood lumber products imported into the U.S. From any country. The SLA 2008 was to take effect 60 days after the enactment of the legislation.
In addition to the basic lumber definitions, there are two kinds of wood from which to choose: hardwood and softwood. The terms have almost nothing to do with the actual hardness of the wood. There are certain characteristics that are common in all wood types. Hardwoods are the deciduous trees that lose their leaves in the fall. The full North America softwood lumber price list will be updated as usual first thing tomorrow morning Eastern time, however here is a sneak peak at benchmark WSPF prices: After waffling up and down $6 over the past two weeks, the price of standard 2x4s remain flat this week at US$376 mfbm; Utility/#3 loses another $12 from last week. Softwood refers to lumber that has been cut from a coniferous or an evergreen tree. Softwoods are frequently used as building materials. Softwoods come from evergreen and conifer trees, such as pine, cedar or spruce. The other class of wood is hardwood, which comes from angiosperms, such as walnut, hickory or maple. Sep 26, 2019 Most softwood trees are evergreens: larch, bald cypress, and tamarack are exceptions. Typical softwood lumber sources include such trees as cedars, firs, hemlocks, pines, and redwoods. In grading lumber, aspen — a hardwood — is graded with the softwoods, which means that it can be used for the same purposes.
Softwood is wood from gymnosperm trees such as conifers, as well as Amborella. The term is opposed to hardwood, which is the wood from angiosperm trees.
Characteristics[edit]
Softwood is usually wood from gymnosperm trees such as pines and spruces. Softwoods are not necessarily softer than hardwoods.[1] In both groups there is an enormous variation in actual wood hardness, the range of density in hardwoods completely including that of softwoods. Some hardwoods (e.g. balsa) are softer than most softwoods, while the hardest hardwoods are much harder than any softwood. The woods of longleaf pine, Douglas fir, and yew are much harder in the mechanical sense than several hardwoods.
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Softwoods are generally most used by the construction industry and are also used to produce paper pulp, and card products.[2] In many of these applications, there is a constant need for density and thickness monitoring and gamma-ray sensors have shown good performance in this case.[3]
Certain species of softwood are more resistant to insect attack from woodworm, as certain insects prefer damp hardwood.
Softwood reproduces using cones and occasionally nuts.
Known softwood trees and uses[edit]
- Douglas fir - joinery, doors and heavy construction
- Eastern white pine - furniture
- European spruce - used throughout construction, panelling and cladding
- Larch - used for cladding and boats
- Lodgepole pine - roofing, flooring and in making chipboard and particle board[4]
- Parana pine - stair treads and joinery
- Scots pine - construction industry, mostly for interior work
- Sitka spruce - [5]
- Southern yellow pine - joinery, flooring and decking
- Western hemlock - doors, joinery and furniture
- Western red cedar (or red cedar) - furniture, decking, cladding, and roof shingles
- Yew - interior and exterior furniture e.g. chairs, gate posts and wood turning
What Is The Canadian Softwood Lumber Import Dispute
Applications[edit]
Softwood is the source of about 80% of the world's production of timber,[6] with traditional centres of production being the Baltic region (including Scandinavia and Russia), North America and China. Softwood is typically used in construction as structural carcassing timber, as well as finishing timber.
What Does Softwood Lumber Mean
See also[edit]
References[edit]
- ^Buckley, Michael (2005). 'A basic guide to softwoods and hardwoods'(PDF). worldhardwoods.com. Retrieved 1 October 2017.
- ^Ryan, V. (2012). 'REVISION CARDS - SOFTWOODS'. technologystudent.com. Retrieved 1 October 2017.
- ^Beigzadeh, A.M. (2019). 'Design, modelling and construction of a continuous nuclear gauge for measuring the fluid levels'. Measurement. 138: 157–161. doi:10.1016/j.measurement.2019.02.017.
- ^'Things we make from softwood trees'. forestry.gov.uk. 11 July 2017. Retrieved 1 October 2017.
- ^Harding, T. (1988). 'British Softwoods:Properties and Uses'(PDF). forestry.gov.uk. Retrieved 1 October 2017.
- ^United Nations Forest Products Annual Market Review 2007-2008, p. 46, at Google Books