parallam plus psl is perfect for framing decks, retaining walls, carports, pool enclosures, among other structural framing applications where the wood comes in direct contact with the ground or moisture.
pressure-treated wood grading standards. many lumberyards stock treated wood in the broad category of > or better. uc4a ground contact, general use uc4b ground
what lasts for a century of ground contact in the high desert doesn't last long in soggy se usa. check with the forest products lab in madison wi for the best selection for ground conatct in your soil type. the nature of the pressure treatment is important as wood species.
properly treated southern pine lumber or posts will last for a hundred years even when in contact with the wet soil. for above ground use, the amount of preservative required is 0.25 pounds per cubic foot. for ground contact the amount of preservative is increased to 0.40 pounds per cubic foot.
wood members that are in contact with the ground should be preservative-treated. the most common lumber treatment is cca copper chromium arsenate , which should be used for applications such as sill plates located near the ground and for exterior decks.
treatment with preservatives protects wood that is exposed to the elements, in contact with the ground or subjected to high humidity. industry quality-control standards for the manufacture and preservation of southern pine ensure long-term performance and minimize environmental impact.
this 2×6 bullnose profile is manufactured from dense select structural southern yellow pine and is a brand produce by southern pine lumber company. all four edges are machined to a 1/2 radius and treated with ground contact retention of copper azole chemical preservative.
highly rated in all working properties including wood bending and turning. aromatic red cedar is frequently used for fence posts used in direct ground contact
ground contact opens the wood up to mold and fungus because it allows moisture to penetrate the wood, which expands and splits in response. plants and vines that grow over the wood also accelerate rot due to moisture buildup.
requirement for mudsills or other wood members in contact with earth or footings to be decay- all of them are rated ground-contact, simply bending the
1 x 8 x 8' above ground micronized copper azole treated lumber: 1 x 8 x 10' above ground micronized copper azole treated lumber: contact info please find your
frx exterior fire retardant treated wood combines: the beauty and versatility of wood with the fire safety and insurance can frx wood be used in ground contact
must use ground contact pressure treated lumber where lumber is at risk for poor air circulation, less than six inches from the ground, or has poor or no water drainage below the structure 2 grade lumber has few defects, knots are well-spaced and do not exceed the size regulations.
frequently asked questions. dry-use conditions when any bending or tension stresses are of short duration, such as for wind or earthquake loads. last in the
excellent shaping, very good planing, fair steam bending. data is based on small, clear, air-dried samples unless specified. usual surface texture: medium dimensional changes when dried lumber is subjected to variations in humidity during service: small resistance to fungal decay heartwood in ground contact : moderately durable 10 to 15 years
both the green and the brown wood used in this wall are rated for ground contact not for below grade or foundation use . however, this wall will easily last a few decadesespecially if you brush or dip the cut board ends with wood preservative photo 4 . if you want your wall to be around for a century, use foundation-grade treated wood.
we sell wood and pressure treated lumber products to your specifications and in accordance with national and local regulations. most dimensional pressure treated lumber is treated to .25 or .40 pcf in acq. larger dimensional lumber 2×8 and above can be treated to .60 pcf with cca but only for use in certain commercial construction applications.
dixie plywood and lumber company of orlando has serviced central florida since 1957. dixieply is one of the largest privately-held building products distribution companies in north america. we service retail lumberyards, truss plants, and home centers.
lumber design values. design values provided herein are for western softwood species manufactured and shipped by mills in the 12 contiguous western states and alaska. except as otherwise noted, the values are computed in accordance with astm standards based on clear-wood tests or on tests of full-size pieces in specific grades.
2 in. x 4 in. x 8 ft. 2 ground contact pressure-treated lumber is rated 3.9 out of 5 by 215. rated 5 out of 5 by jd from use these primarily for wood fencing rails. gets the job done.
the mc of lumber can soar when is stored at a lumber yard without a protective cover and/or stacked over wet ground. lumber stored in a very humid environment like next to the ocean can sponge water too. a kd stamping means very little if the lumber has been left sitting in the rain at a distribution center, reload yard, retail yard or building
ground level deck ; uphill sloping lot deck apply to tabulated design values for extreme fiber stress in bending where lumber is used flatwise rather than on edge
the awpa has established minimum retention levels for el2 and pti, but only for above-ground use, so wood treated with these chemicals is limited to places where it wont be in prolonged contact with water.
allweather wood preservative treated lumber is a proven building material for a wide range of agricultural, commercial, industrial, and residential applications.
considerations for sealing wood beams for ground contact considerations for sealing wood beams for ground contact bending loads induced by wind loads across the