Both DIYers and building professionals will like these garden and outdoor living ideas and plans. #1 will have less knots and is typically spec'd for joists and rafters. The wood is 43% clear for appearance grading. 2, and No. Free of pitch pockets, pitch streaks and medium pitch on one wide face, but otherwise conforms to No.1 Dense or No.1 Dimension Lumber. it's primarily 2x planks. A joist made of Douglas fir, for instance, will cover a greater span than a hemlock joist of the same size and grade. Records, trained personnel and an approved, properly equipped laboratory (either in-house or an approved external lab) are also required to complement the penetration and retention sampling requirements. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. ), how wood is used also comes down to whether or not it's pressure treated. The lumber may have splits up to 1.5 times the boards width, knots no larger than 3-1/2, and one hole every 2. Lumber that is imported or for export requires the designation KD-HT, which means it has been kiln-dried and heat-treated to kill insects. Ultimately, our program provides an economically sound and standardized method of treatment, evaluation, labeling and certification for producers, specifiers and end users of pressure treated wood products. Working with pressure treated lumber is similar to working with untreated planks. Southern yellow pine (SYP) is very strong and is common in the eastern U.S. A mixture of spruce, pine, and fir (SPF) dominate much of the northern U.S. and eastern and central Canada and isnt as strong as SYP. Some lumber is also treated for fire protection and used throughout different areas of residential, commercial, and industrial construction. Similar in appearance to No.1 Dimension Lumber. Office: (850) 434-2611 | Toll Free: (800) 995-7742 Reasonably clear, but permits limited number of surface checks and small tight knots. It was widely used as a preservative from the mid-1930s to 2004. See SPIB Special Product Rules for design values, Appearance is same as B&B Finish for thicknesses of 4" and less. Luckily, a more budget-friendly option of pressure treated lumber grades is available. Preservative Treatment When pressure-treated lumber is required, it should be treated according to appropriate American Wood Protection Association (AWPA) Standards or through the product evaluation process of the International Code Council (ICC) Evaluation Service. Follow the link here to complete our Treated Division and Laboratory Customer Satisfaction Survey. Details Made from quality Southern Pine lumber Available for . Most of this new treated lumber looks untreated as compared to the old green stuff, I did learn that they add color to some of it to try and make it look more like treated. Using expensive wood that is naturally resistant may not fit the budget. Most is not. The table below identifies the main differences. These Standards are very prescriptive in the requirements for Quality Control procedures, preservative penetration, analysis methods for retention, in-plant equipment, records and third-party agency responsibilities and requirements. Water-repelling at a molecular level I grabbed an exerpt here and there and put it all together, for I was on a lot of different sites and suppliers. There are different types of treatment and lumber grades for different uses. Abbreviations for framing-grade softwoods, from strongest to weakest, Doug Fir, D Fir- L: Douglas fir (L=western larch). Just to second what rjniles just said, the HD guy couldn't be more wrong (imagine that). Longleaf, shortleaf, loblolly, and slash are some of the native southeastern pines that are classified as SYP. Dont know anything about the HT lumber, but if you are in the west, the PT is still Western Hemlock and looks pretty much the same as before. The lumber is inspected for knots, splits, and other defects that can weaken the woods structural strength. Premium and select classifications and the percentage of clear wood are appearance grades used by some mills and retailers. Dense Select Structural Select Structural. Raised floor homes look great and protect homeowners against risks from flooding and subsiding soils. H\Ak0:b @HZ=8&5FqjfvRut.I/55zb6+]5m&.wgUWm,ZM]nrO=gu${Tu?co2:4 Standards Revised The 2016 Book of Standards published by the American Wood Protection Association(AWPA) includes revisions to treated wood standards: Ground Contact-treated wood is now required when installed less than 6 off the ground; when it is wetted on a frequent and recurring basis; for joists and beams that are difficult to maintain, repair or replace and are critical to the performance and safety of the structure; when used in tropical climates. The grade mark can include "1W" or "2W" if visually graded to the wane requirements for No.1 or No.2 dimension lumber, respectively. Gives the trademark or number of the mill of origin. The current process is mostly computerized and mechanized using modern technology. maple, oak, birch, etc. The wood then is dried naturally or in a kiln to evaporate the water out, leaving the preservatives behind. As I understand it, the grade refers to the number of knots in a given length. The retention level is measured in pounds of chemical per cubic foot of wood (pcf). The SPIB grade-mark is recognized as a sign of integrity within the industry. 43:Gs * endstream endobj 143 0 obj <>stream Structurally, an SPF #1 28 can be used to span distances of 14-11. A walk down the lumber aisle or through a lumberyard will provide some understanding of the differences between #1 and #2 grade pressure treated lumber, or increase your confusion. Treated wood products must meet very specific quality requirements to meet the building code. This website is presented by SFPA members, including: 2023 Southern Forest Products Association. The grade-mark must contain the first four items listed below; the fifth item is optional. Machine Stress Rated (MSR) lumber is evaluated by mechanical stress rating equipment. 2 lumber, which provides good strength at a reasonable price. Got your hard hat and high-vis vest? See Table 2 or SPIB Grading Rules for design values. Not all PT is rated for ground contact. No 4x or 6x stuff that you might use for skids. endstream endobj 146 0 obj <>/Filter/FlateDecode/Height 49/Intent/RelativeColorimetric/Length 6519/Metadata 150 0 R/Name/X/Subtype/Image/Type/XObject/Width 174>>stream Gloves protect against slivers and water-soluble chemicals; it is also advisable to thoroughly wash hands before eating or drinking. It has a unique broad grain cellular structure that allows for uniform and deep penetration of chemical preservatives. SPIB is a not-for-profit company that serves as the rules-writing agency for the Standard Grade Rules in Southern pine lumber. THIRD-PARTY AGENCY AUDIT and SAMPLING PROCEDURES. #1 #2 prime etc deals with the quality of the board. SPIB is able to assist manufacturers achieve and maintain the quality that their customers require by employing highly qualified instructors. t|]UE)@Whi`_@z>'}8/p}8c About Contact Careers Locations Products, About Contact Careers . There is no structural premium grade, it is strictly a term for bright looking wood free of blemishes or knots. 1, No. In most cases, the required depth of penetration is 2.5 or 85% of the available sapwood. This lumber has been non-destructively evaluated by an American Lumber Standard Committee approved machine. Construction grade commonly refers to #1 grade lumber. Advances in preservative treatments, environmental management and sustainable forestry practices make treated wood an ecologically sound building material. Being 80% or more clear of defects, it is often used for cabinetry, furniture, and trim. Thanks to all, ill never outlive ground contact or not, but maybe for the kids ill go with the lumber yard ground contact since they did the quote and its not much more dough. 3 (lowest strength, not pretty). Southern yellow pine in the eastern U.S., spruce pine and fir in the northern U.S. and eastern-central Canada, and Douglas fir, fir, and hemlock in the western U.S. and Canada. 6^,fniSgdc24.L7` b. KD and KD-HT are often more expensive and less susceptible to warping and shrinkage. Timber Grades have similar characteristics to the corresponding grades of dimension lumber. This approach is intended to consider the big picture trends as opposed to allowing otherwise isolated issues to severely affect plant performance status. Decking materials such as 26 and 5/46 frequently are of better-looking #1 and #2 lumber. Application of the product requires pressure treatment by an approved treating process and preservative for. Then I worked to drink. The molecular changes in wood composition result in unique features: The type of preservatives, retention level, and year it was treated are identified on the label. 3 and Stud 12" wide 2050 1900 1750 1350 1250 1150 1150 975 900 575 1100 1050 900 725 675 600 575 550 525 325 175 175 175 175 175 175 175 175 . (Kiln Dried After Treatment). Both DIYers and building professionals will like these garden and outdoor living ideas and plans. The pressure-treatment process Timber components, machined to their finished dimensions and at an appropriate moisture content, are impregnated with preservatives in large pressure vessels, where the combination of vacuum and high-pressure drives the preservative into the wood. Recommended where appearance and strength are a consideration. The lumber is stronger than #1 or #2 and is ideal for all structural construction applications. Recommended for most general construction uses where moderately high design values are required. www.strongtie.com/products/ptwoodfaqs.html, FAQ: Pressure-Treated Wood | Simpson Strong-Tie. The grades are stamped prior to the wood being treated, so are the same for both treated and untreated. Recommended where appearance and strength are a consideration. Since 1960, lumber in North America has been graded at lumber mills by trained inspectors for structural strength and quality control. 7nX"a*C[3Dj8[n7;c}W6ynCK2AC?jP0zD'm)a7"tq~eikT):ozU*9Ry"EEy*x|r+Q/!P2GD[0iNvXv4HS-ljs2$r%M$-gi"H"3J2!&IjHnVo " 3Xi^!gc18,WxFWF2O0eMu ~e{lcoJxK]a|rJaxWFX1' g%|M'kL&^JgY9#%T;RnrIwdmdx:rNY%KDn1s,eD8WNjSgvb5OPYn0? .y Z,4zl,RrIl@%<6dWoLMf6Y6J6agH Ground contact level treatment (.15 pcf) has more than double the preservative of above ground level treated wood (.07 pcf) Lighter, more natural wood appearance for improved staining qualities. The best pressure treated wood for decks is Select, #1 or #2 grade wood. An economical roof decking which conforms to No. Office: (850) 434-2611 | Toll Free: (800) 995-7742 r Got the ledger #2 GC from the lumber yard. BOARD GRADES. These requirements are initially checked by the producing treating plant, but are ultimately verified by independent, third-party agencies that ensure plants produce treated wood products in accordance with industry standards. It is stronger than #2 or #3 grade lumber. As we can find no formal and simple description of all the different grades, we attempt to describe the grades that we currently stock so that you can decide what best fits your need and customer base. These factors, plus the moisture content at the time of milling, determine the grade assigned. There may be a secondary stamp that identifies the visual grade as Premium or Select A, B, C, or D. Pressure treated lumber also has an end-tag stuck or stapled to one end. The wood grain has a 1 in 8 slope, and there may be bark edge or wane visible. (KD-HT means the wood was also heat treated to kill pests, a requirement for imported lumber.) Pressure treated lumber has been infused with preservatives to prevent rot and insect damage. The chamber is then flooded with a diluted chemical solution, and hydraulic pressure applied for 20 to 60 minutes to force the solution deeper into the wood. *Load duration factors greater than 1.6 shall not apply to structural members pressure-treated with water-borne . It often links with the logo or symbol of the association that oversees the grading at that mill. 1s and Selects, to boot. The American Wood Protection Association (AWPA) sets the standards for the retention level required for the different chemical preservative compositions for specific types of use. The treated wood is then taken to the yard to dry naturally or to the drying kilns before shipping to the retailer. The amount of moisture in the wood at the time of milling is noted. Lumber that is KD (kiln-dried) or S-DRY (surface-dry) has a moisture content that is lower, between 16% and 19%. Treated posts or ties readily available at yards and stores are 35, 44, and 66; 88 is also available but may be a special order. The longer the wood is in the pressure chamber, the greater the content of chemical preservatives forced into and retained in the wood. H|TnT1}W1yi= hEN4Kg8 bvlbh%gCXcX]NDRnFiUH>.Sl6Vi\(f^j+d}IT#h3Si [j6sG1Pbh`sX9W.+|FdqvJY/nm Sd@{D To qualify for a SPIB grade-marking license, a mill must have verified credentials in the manufacturing, seasoning, and grading of Southern Pine lumber. Those and other treatments are used for industrial purposes instead. All rights reserved. r http://www.ecoprem.com/pdf/ecoprem_wood_technology_competitive_analysis.pdf. To limit the entry and spread of quarantine pest through international trade, the International Plant Protection Convention adopted the International Standards for Phytosanitary Measures Guidelines for Regulating Wood Packaging Material in International Trade (ISPM 15). Once penetration is verified, the outer section of the cores is removed to measure the amount of preservative retained. 139 0 obj <> endobj 153 0 obj <>/Filter/FlateDecode/ID[]/Index[139 24]/Info 138 0 R/Length 80/Prev 801267/Root 140 0 R/Size 163/Type/XRef/W[1 2 1]>>stream 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. But in an existing house where the framing is already dry, hell use more stable, and more costly, KD lumber, or even MC-15 lumber, which has a moisture content of 15 percent or less. We've downsized and im already overimproved. The solution protects against insects, mold, mildew, fungus, and rot, and turns the wood a light brown hue. Fax: (850) 434-1290. Too much. No.1 Prime No.2 Prime H ighqu al ty, m ed nc r sfo . Pressure treated lumber commonly is end-tagged with an information label before leaving the plant. Suitable for use as individual laminations for structural glued laminated timbers. Here are the grades and types of lumber most commonly available, plus the percentage of clear wood you could expect for the appearance market or grade: Lumber with few or no knots or blemishes may be called premium by some mills or retailers to capitalize on DIYers wish for better-looking lumber. Here is a list and description of some of them. It appears as a new technology from Canada. Stud is a fifth designation, meaning its good for a load-bearing wall. Dressed to standard dry size prior to machine stress rating, and visually graded to assure that characteristics affecting strength are no more serious than the limiting characteristics for each grade. The sampling procedures are the same as required by IQC, but re-inspection of a given charge will likely involve only a portion of the total charge. High utility value where appearance is. No.1 Prime No.2 Prime Size inches ( actu l) Spacing inches on center 12.0 16.0 24.0 12.0 16.0 24.0 12.0 24.0 16.0 24.0 TREATED FLOOR /D . Basements and bathrooms are other areas where pressure treated wood can be used to frame interior walls to protect against moisture, mildew, and mold damage. Pro Note: All copper-based wood preservative solutions will corrode unprotected iron and steel brackets and fasteners. All Scaffold Plank design values are calculated using ASTM Standards D245 and D2555. {l@n7gM. Email: cspsales@canfor.com. It is a very strong and stiff softwood, and dense too. Provides good appearance with some of, Maximum recommended support spacing is 24" on center (16" on center for Imported Southern Pine), High-quality product, recommended where smallest knots are, Slightly less restrictive than premium grade. s Another brand of heat treated wood that can be used for decking. The International Code Council Evaluation Service (ICC-ES) similarly approves preservative systems through its Evaluation Service Reports (ESRs). Structurally, an SPF #3 28 can be used to span distances of 12-4. The quest for decent boards begins. Any lumber experts out there that can confirm KD HT is ok for a new deck? Recommended for general construction purposes where appearance is not a controlling factor. Our Services | Lumber Services | r Termawood is an unique technology that uses heat treatment for timber processing to significantly improve various characteristics of wood. Tel: 251-457-6872. Select Structural (SS) is the highest grade based on strength and durability. Treated wood will shrink as it dries and expand when wet and may acquire surface checks and cracks over time. A superior decking grade, suitable for plank floor where face serves as finish floor. The ALSC also accredits third-party agencies, like SPIB, to inspect treating plants that produce treated lumber products with preservative systems listed in the American Wood Protection Association (AWPA) Book of Standards (BOS). Southern Pine's ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. By submitting your email, you agree to our, 5 Easy Ways to Remove Scratches from a Glass Window, Build It | Shaker End Table with Char Miller-King, Do Not Sell or Share My Personal Information. Excellent for painting or natural finish where requirements are less exacting. SPIB is committed to assisting our customers meet their treatment goals in the most cost-effective means possible. For demanding applications, such as interior load-bearing walls, hell pay extra for these stronger grades. It has anti fungal properties along with a host of other positive features. Tom saves money by ordering S-GRN wood when framing a new house, figuring that all the wood will air dry at the same pace. Recommended where a combination of economical construction and good strength is desired. An indicator is used to identify the untreatable, heartwood sections of the 20-core sample (Sapwood is the outer portion of the log; heartwood is the innermost portion of the log and is rarely capable of accepting preservative). Identifies the accredited agency or association that oversees grading accuracy, in this case the National Lumber Grades Authority. Once on the drip pad, the material will stay until it is dry enough to be moved into the plants treated inventory. ehV$W'A Species and Sizes Of Pressure Treated Wood, Different Kinds of Softwoods That Are Pressure Treated, Tips for Working with Pressure Treated Wood, Types of Pressure Treated Lumber and Where to Use Them, Sill & bottom plates, damp locations, basement framing, bathrooms, flooring, baseboards, Exterior Above Ground, Coated with Rapid Runoff, Exterior Above Ground, Uncoated or Poor Runoff, Cedar shakes, exterior stairs, joists, beams, decking, railings and fence boards/pickets, any wood within 6 of soil & vegetation, Fence, deck & structural posts, ledgers, retaining walls, garden boxes, any wood within 6 of soil, vegetation, or freshwater, or poor air circulation, As with UC4A plus posts set into the ground, retaining walls, wood foundations & supports, freshwater contact, saltwater spray, garden & utility posts, Pilings or wood in direct installation in soil, gravel, concrete, freshwater, or extreme weather exposure, Contact & immersion in cold ocean waters north of Long Island & San Francisco, docks, piers, wharves, shore walls, boardwalks, & buildings, Contact & immersion in warmer ocean waters south of San Francisco and Long Island, and similar to UC5A, Contact & immersion in warm Gulf Coast waters & south of Georgia, and similar to UC5A, Interior construction, no ground or moisture contact, fire partition walls, kitchens, hallway & stairwell framing, Exterior construction, exposure to weather but not ground contact, porches, exterior stairs, window treatments, Tight and well-spaced, and no larger than 2-3/4 on a 28, Well-spaced and no larger than 3-1/2 on a 28, 1/4 the thickness and 1/4 the width full length, or not greater than 1/2 the thickness or 1/3 the width for 1/4 of the length, 1/3 the thickness and 1/3 the width full length, or not greater than 2/3 the thickness or 1/2 the width for 1/4 of the length, Checks separation across or through growth rings due to seasoning, Unlimited surface seasoning checks with through checks limited to splits, Skips surfaces that were missed or failed to clean, Maximum of 5% of the plank or 2 or less in length, Shake lengthwise separation through or between growth rings, Limited as splits if through or 2 long on the surface only, Limited as splits at ends if through or 2 long if well separated, or maximum of 3 or 1/4 the length if surface only, Warp bow, crook, cup, twist, or any combination, Sapwood stained or firm heart or red heart stain, No limit to sapwood stained or firm heart stain or red heart. We work together with our subscribers to provide consistent, accurate inspection data for their use to improve product quality, meet Building Code specifications, enhance service life, and promote industry sustainability. &_ePM&dWCh Structurally, an SPF #2 28 can be used to span distances of 14-11. It holds nails, screws, and other fasteners well, and is commonly used in residential, industrial, and commercial construction. It is most commonly used for sheathing and applications where a fine finish is not required. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. A very good product to, Highest recognized grade of Finish. Premium is often identified as A, B, C, and D. A has no visible defects, knots, or splits, B has a few small defects visible, C may have small knots on one side and none on the other, and D may have pin size (up to 1/2) knots or small defects on both sides. Tags: None The Duke Each charge is tallied as to the specific Production Category that will be used to determine the level of sampling to be performed in the plants treated wood inventory. For a better experience, please enable JavaScript in your browser before proceeding. SPIB also inspects mills that manufacture and label various lumber products under these rules. Construction grade is #1 and Standard is #2. More knots than Premium grade Regardless of whether the preservative system is approved through the AWPA or ICC-ES process, the inspection and analytical standards used to monitor the respective quality attributes are delineated in the AWPA Book of Standards. IQC results of treatment for each charge are required to be documented in the plant records to correspond to the individual charge reports. Pressure treated wood has many outdoor uses and even is used in some indoor locations, especially where moisture may be a concern.
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