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Tuesday, July 21, 2020 | History

3 edition of Dimensional changes in kiln-dried softwood lumber after surfacing and during storage found in the catalog.

Dimensional changes in kiln-dried softwood lumber after surfacing and during storage

G. L. Comstock

Dimensional changes in kiln-dried softwood lumber after surfacing and during storage

by G. L. Comstock

  • 306 Want to read
  • 4 Currently reading

Published by Forest Products Laboratory in Madison, Wis .
Written in English

    Subjects:
  • Lumber -- Testing,
  • Lumber -- Drying -- Evaluation

  • Edition Notes

    Includes bibliographic references.

    StatementG.L. Comstock.
    SeriesU.S. Forest Service research note FPL -- 0144.
    ContributionsForest Products Laboratory (U.S.)
    The Physical Object
    Pagination10, [11] p. :
    Number of Pages11
    ID Numbers
    Open LibraryOL17617590M
    OCLC/WorldCa7465504

      Kiln dried fibers are harsh & britle from being cooked, and air dried fibers are soft & silky. I also find that there is less grain tension and less movement after a rip cut or resaw. It gets along great with the plane irons as well as machines. When I need presurfaced material for a quick turn around job I . the split between UK produced and imported softwood consumed in the UK [UNECE ]. Research compiled by Timbertrends on wood import the UK for was used to determine the countries of origin for imported softwood [Timbertrends ]. Spruce and pine were used in these import statistics along with a third of kiln dried sof 3 of kiln dried.

    Douglas-fir Shrinkage and Dimensional Stability Douglas-fir is an important building timber in North America, particularly in the Pacific north West, where it has a reputation for being naturally dimensionally stable – the ability to “season well in position” and retaining its shape during use (WWPA, ).File Size: KB. After lumber reaches the EMC, subsequent dimensional changes will be minimal. However, brick, steel, and concrete will continue to expand and contract with temperature changes. Care should be exercised in detailing large expanses of interior and exterior drywall, paneling, and siding where the cumulative effects of multistory dimensional change.

    Southern California's Biggest Lumber Selection! Choose from a variety of dimensional and engineered lumbers, from imported hardwood to domestic western softwood. We offer our lumber in a wide range of kiln-dry levels as well. 5 A situation developed . A situation developed . • The homeowner found an expert who opined that MC at time of installation was as high as 17, and %File Size: KB.


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Dimensional changes in kiln-dried softwood lumber after surfacing and during storage by G. L. Comstock Download PDF EPUB FB2

DIMENSIONAL CHANGES IN KILN-DRIED SOFTWOOD LUMBER. AFTER SURFACING AND DURING STORAGE. G.L. COMSTOCK, Technologist. Forest Products Laboratory, 1. Forest Service.

U.S. Department of Agriculture Introduction. The question has been asked by some lumbermen, “Does a ‘delayed shrinkage’. Dimensional changes in kiln-dried softwood lumber after surfacing and during storage.

Madison, Wis.: Forest Products Laboratory, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: G L Comstock; Forest Products Laboratory (U.S.).

G. Comstock has written: 'Dimensional changes in kiln-dried softwood lumber after surfacing and during storage' -- subject(s): Lumber, Testing, Drying, Evaluation.

Comstock has written: 'Dimensional changes in kiln-dried softwood lumber after surfacing and during storage' -- subject(s): Lumber, Testing, Drying, Evaluation Asked in Building and. Moisture Content of Dried Lumber 12–10 Moisture Control During Transit and Storage 12–14 Plywood and Structural Items 12–14 Finish and Factory Lumber 12–15 Dimensional Changes in Wood 12–15 Estimation Using Dimensional Change Coefficient 12–15 Calculation Based on Green Dimensions 12–17File Size: 1MB.

plants that occur after drying (probably 85% of the defects that I am called on to help cure) is incorrect MC. Careful attention must be paid to the humidity (not the temperature) in which lumber is stored, manufactured, shipped, and used to assure that the MC of the dried lumber or wood product is kept close to the final, in-use EMC at all Size: KB.

As a result, kiln-dried lumber will move less during and after construction. Kiln-dried lumber is marked with a grade stamp that indicates the lumber has been dried before leaving the sawmill.

Lumber Grade Stamps. Kiln-dried lumber will be stamped with the mark “KD” or “SDRY”. If the lumber is imported, it will also be heat-treated to. The title of this thesis is “Efficient Kiln Drying of Quality Softwood Timber”.

The following discussion will break this title down to what it really means and provide a context for the thesis. Timber is a name given to wood that has been prepared for the purpose of building or carpentry (Robinson and Davidson, ).

For example, Douglas fir, which is commonly sold as studs and dimensional lumber in some regions, does not hand plane as smoothly as hardwoods such as oak and walnut. A sharp blade will plane all three pretty well, but hand planing oak is like hand planing butter compared to hand planing Douglas fir.

This 2 in. x 4 in. x 10 ft. Spruce-Pine-Fir Dimensional Lumber is prime quality, kiln-dried lumber. It is good for a variety of applications, including framing of houses, barns and sheds.

It can be used for projects, such as furniture and hobbies. It can be used in exterior applications if it is properly primed and painted or sealed and : $ Kiln Dried Framing Softwood Lumber • R/L Green Dimension Utility/ #3 2x4 #2&Btr 2x6 2x8 2x10 Eastern SPF x6 x8 F.o.b.

Toronto. (US$) GST excluded 2x4 #2&Btr 2x12 2x4 #3/Utility Douglas Fir Vol No. 9 The source for North American softwood lumber and panel prices March 4, by File Size: 1MB. This is a list of standard lumber abbreviations that are commonly encountered in the buying and selling of lumber in the United States.

U.S. Department of Commerce. Strip oak flooring, Comm. Stand. CS 56 Washington, DC: USDC. U.S. Department of Commerce. American softwood lumber standard. Washington, DC: USDC. Yoder Lumber fully kiln dries most thicknesses and species of hardwood lumber, processes dry lumber, and provides cut-to-length, ripping, surfacing, and sanding.

We can produce almost any type of dimension lumber product, including glued panels, squares, furniture parts, and finger joint stock in multiple species. Dry Lumber. We carry kiln dried (KD) lumber in an assortment of softwood and hardwood species. From clear dry Redwood, Douglas Fir and Pine, to Poplar and Red Oak in common sizes and higher lumber grades.

Kiln dried lumber is less susceptible to shrinking and is less likely to warp or check because it contains less moisture content. I'm going to be getting several hundred BF of kiln dried wood, and I don't have the room to store it all undercover.

The wood will be 4/4, 6/4, 8/4, and some 1/2". Hard and soft maple, red and white oak, and elm. My plan is to store the bulk of it outside. Determination of moisture content changes in kiln-dried scots pine timber during storage 47 Materials and methods The investigations were made for Scots pine (Pinus sylvestris L.) wood.

Four twin boards with dimensions: 50 mm thick, mm wide and 4 m long were obtained from a green log (moisture content above the fiber saturation point.

Controlling Moisture Content in Stored Lumber 2 Purdue University Cooperative Extension Service, West Lafayette, IN Stored Lumber Properly kiln dried lumber stored inside of a residence where temperature is controlled, will not significantly gain or loose moisture, thus there is little shrinking or swelling.

However, if the lumber is stored. The dimension of lumber after seasoning and surfacing, from 3/8 to 3/4 inch ( to mm) less than the nominal dimension.

A dressed size is always written with inch marks. Also called dressed dimension. Once kiln-dried wood arrives, woodworkers should store the wood in a climate-controlled shed or shop in order to avoid wood movement.

Seasonal changes in humidity can cause wood to shrink or swell. PLANED KILN DRIED HARDWOOD Available to order, and can machined to customer’s size and specifications. Each hardwood has its own properties, but do have some in common.

Hardwood is a dense wood and usually slow grown. Hardwoods have many uses, and because of the different properties, different types of hardwood have different uses. Hardwood is good for carving, and also is.

When kiln dried, the additional tolerances in size allowed for kiln dried lumber apply. See p Inspection Kiln Dried Lumber. LENGTHS: Shall be full and should be 1/2" to 2" longer than. Kiln dried lumber actually takes longer to achieve that equilibrium because the lignin is more set and the cell walls more rigid and it won’t absorb much.

Air dried lumber isn’t as rigid and will more readily soak up moisture. Regardless, both will absorb and shed water throughout their lifetime and the associated movement must be accounted.saling million board feet annually of Softwood lumber products, with species including Douglas Fir, Engelmann Spruce, Lodgepole Pine, Spruce-Pine-Fir, White Fir, Hemlock Fir, Larch and Ponderosa Pine, all kiln-dried.

Additional prod-ucts include 3/4-inch particleboard, 7/inch siding and trim Continued on page 27 Continued on page 26File Size: 4MB.