By checking this box, I agree to receive communications from Simpson Strong-Tie in accordance with their . <p>Face-mount hangers for engineered wood product (EWP) connectors are specifically designed to attach EWP beam members to other members in any structural system. Face-mount hangers for engineered wood are integral building design ... By: Olin Wade (Remodel or Move Stuff) No, PSL and LVL are not the same. PSL stands for Produced Strength-Level lumber and is a type of treated wood that is pressure-treated with preservatives to resist decay and termites. LVL stands for Laminated Veneer Lumber and is a type of engineered wood that is made by gluing several thin layers of wood ... What defines Generation Me? Learn all about Generation Me at HowStuffWorks. Advertisement Generations can be hard to define. We tend to combine huge groups of people into arbitrary...Wood Products. Engineered Lumber. Resources. U.S. Sizing Table Lookup. Use these simple calculators to size Trus Joist TimberStrand LSL and Parallam PSL beams and headers. Select the application below you are looking to calculate. Calculators are for use in U.S. applications only. For Canada switch to Canada Sizing Table Lookup.TREATED PARALLAM PLUS PSL BENEFITS: Engineered lumber components for long-term durability and performance. Treated to the core, eliminating field treatment when cut or drilled. Protection against termite damage and fungal decay. The ideal structural solution for most exterior applications. SFI®-certified and NAHB-approved products that meet ...Both LVL (Laminated Veneer Lumber) and LSL (Laminated Strand Lumber) have their advantages and disadvantages, and what is considered “better” will depend on the individual needs of the project and budget. LVL is generally more expensive than LSL because it is made from glued veneer layers and is engineered for increased stiffness and strength. The primary difference between LVL (Laminated Veneer Lumber) and PSL (Parallel Strand Lumber) is their core construction. LVL is composed of many thin veneers, or layers, of wood that are laminated together while PSL is composed of parallel strands of wood that are bonded together. Jan 7, 2024 · Round 2: Strength and Load-Bearing Capacity. When it comes to strength, both Glulam and LVL flex their muscles. Glulam, with its layered construction, exhibits impressive load-bearing capabilities, making it an excellent choice for heavy-duty applications such as beams and columns. LVL, on the other hand, boasts consistent strength properties ... Language (United Kingdom) Italy. italiano (Italia)The Pakistan Super League (PSL) has taken the cricketing world by storm since its inception in 2016. With top international players and thrilling matches, it has become one of the ...called laminated veneer lumber (LVL) and consists of spe-cially graded veneer. Another type of SCL product consists of strands of wood or strips of veneer glued together under high pressures and temperatures. Depending upon the com-ponent material, this product is called laminated strand lumber (LSL), parallel strand lumber (PSL), or orientedPhoto 1. Click to enlarge. Photo 2 (below) shows a 40-foot PSL girder supporting the end of a PSL beam in a galvanized steel stirrup. This beam supports a laminated veneer lumber (LVL) joist on ...Structural composite lumber (SCL) is an engineered wood product manufactured by layering strands, veneers, or flakes with adhesive into material blocks known as billets. The term SCL was used to capture the variety of unique structural products that include parallel strand lumber (PSL), laminated strand lumber (LSL), laminated veneer lumber ... Laminated Strand Lumber (LSL) is one of the more recent structural composite lumber (SCL) products to come into widespread use. LSL provides attributes such as high strength, high stiffness and dimensional stability. The manufacturing process of LSL enables large members to be made from relatively small trees, providing efficient utilization of ... For quotes, pricing and availability use our Where to Buy tool to find a dealer near you. From window openings to garage door headers, Weyerhaeuser Microllam® LVL is a versatile solution that supports heavy loads without worry. Our manufacturing process creates uniform and predictable products, all with a limited lifetime warranty.Description: Design information for TimberStrand LSL Stair Stringers and SturdiStep Stair Treads Document ID #: 9010 File Type: pdf File Size: 1.3 MB File Date: October 2022 ... Laminated veneer lumber (LVL) is an engineered wood product that uses multiple layers of thin wood assembled with adhesives. It is typically used for headers, beams, rimboard, and edge-forming material. LVL offers several advantages over typical milled lumber: Made in a factory under controlled specifications, it is stronger, straighter, and ... Feb 28, 2024 · Discerning the distinct characteristics between materials like Laminated Veneer Lumber (LVL) and Parallel Strand Lumber (PSL) is crucial not only for their technical applications but also for their practical performance and installation on the jobsite. Laminated veneer lumber (LVL) beams are a popular choice for residential construction projects due to their strength and versatility. When designing a structure that requires beams...2.2E Parallam® PSL is a structural solution you can count on. 2.2e parallam® pSl availability and Sizes The 2.2E Parallam® PSL shown in this guide is readily available in the western United States, with limited availability in other parts of the U.S. 2.2E Parallam® PSL headers and beams are available in the following standard sizes:According to the U.S. Department of Agriculture, market share for engineered wood products such as glulam, I-joists, and laminated veneer lumber (LVL) is forecast to continue its steady growth, with glulam production during 2017 (271.3 million board feet) up 5.6 percent from the previous year; engineered wood I-joist production (518 million ...3½" – 7" LVL (2.1E / 2.3E**) PSL (2.0E / 2.2E) LVL (2.1E) LVL (2.1E*) LVL (2.0E) RIM BOARD Pacific Woodtech† Trus Joist Boise Roseburg LP 1¼" – 1¾" LVL Rim Board LSL Rim Board LVL Rim Board LVL Rim Board TBD*** DIMENSION Pacific Woodtech† Trus Joist Boise Roseburg LP Various Sizes LVL LSL LVL LVL TBD***Available in a wide range of sizes and lengths. Consistent quality due to its manufacturing process. Cons of LVL: Lower strength and stiffness compared to glulam. Limited to smaller spans and load-bearing applications. Less visually distinctive compared to glulam. May not be suitable for use in larger, open structures.Microllam® LVL and TimberStrand® LSL is appropriate for dry-use applications only (generally not directly exposed to precipitation) and cannot be pressure treated. Neither product is suitable for the pressure treatment process due to material density and adhesive content. Also some wood species used in their production may not be appropriate ...Eastern Parallam PSL is manufactured at the Buckhannon, WV plant and provides enhanced protection from the elements when it matters most - during construction. You’ll see the difference from the start—thanks to our new and innovative proprietary sealant. Read more about Eastern Parallam PSL. Eastern Parallam® PSL Product Overview TJ …A: Our Parallam Plus PSL Specifier’s Guide provides load/span tables for both beams and columns used in typical exterior deck applications. The tables are based on an in-service moisture content of 28% or less. In addition, Forte – our single member sizing software, allows the design of Parallam Plus PSL products used in varying in-service ...Structural Engineering Blog. <p>Engineered wood connectors are steel connectors used to securely attach engineered wood product (EWP) members to other members to provide overall support to any structural system. Top-flange hangers for engineered wood are an integral component for providing maximum down loads that require a minimum amount of ...Easy-to-use tables adaptable to a variety of wind conditions, surface finishes, and wall layouts. Out-of-plane wind and vertical load information for designing walls that are stiff, strong, and straight. Limited product warranty. woodbywy.com. 1.888.453.8358. The products in this guide are readily available through our nationwide network of ...Microllam® LVL 18–19 Parallam® PSL 20–21 Snow Roof Load Tables TimberStrand® LSL 22–23 Microllam® LVL 24–25 Parallam® PSL 26–27 Non-Snow Roof Load Tables TimberStrand® LSL 28–29 Microllam® LVL 30–31 Parallam® PSL 32–33 Beam Details 34 Window and Door Header Details 34–35 Nailing on Narrow Face 35 Allowable Holes 36Learn the differences between popular types of structural composite lumber (SCL) such as PSL, LVL, LSL, Glulam and OSB. Compare their advantages, disadvantages, costs and sustainability. Find out which type of SCL is best for your project needs and preferences.Microllam® LVL 18–19 Parallam® PSL 20–21 Snow Roof Load Tables TimberStrand® LSL 22–23 Microllam® LVL 24–25 Parallam® PSL 26–27 Non-Snow Roof Load Tables TimberStrand® LSL 28–29 Microllam® LVL 30–31 Parallam® PSL 32–33 Beam Details 34 Window and Door Header Details 34–35 Nailing on Narrow Face 35 Allowable Holes 36TREATED PARALLAM PLUS PSL BENEFITS: Engineered lumber components for long-term durability and performance. Treated to the core, eliminating field treatment when cut or drilled. Protection against termite damage and fungal decay. The ideal structural solution for most exterior applications. SFI®-certified and NAHB-approved products that meet ...LVL is made like plywood, except instead of orienting the grain at 90° with each layer, all the layers have the grain in the same direction, pretty much like real wood except there aren't any weak spots. Glulams are basically a stack of 2x6's glued together. Prettier than LVL's but more expensive.Source: jansslumber.com. LVL, like Glulam, is an engineered wood product that consists of multiple layers of thin wood veneers glued together. However, unlike Glulam, LVL is typically manufactured ...Professional sports leagues have always been a source of excitement and entertainment for fans worldwide. One such league that has captured the attention of cricket enthusiasts is ...Timberlands. Trees are a remarkable resource that, when managed responsibly, can meet a wide range of fundamental needs for people and the planet for generations to come.2.0E Parallam PSL is available in 3.5”, 5.25” and 7” widths and depths up to 18” 2.0E Microllam LVL is only available in a 1.75” width and depths up to 24” These products can be combined to make a beam up to 7” wide, provided the beam was originally designed or specified as Microllam LVL. Only matching depth pieces should be used.Use Google Messages for web to send SMS, MMS, and RCS messages from your computer. Open the Messages app on your Android phone to get started.In this episode of WoodSolutions InFocus Laurence visits a factory which produces Laminated Veneer Lumber to see how it is made. Laminated Veneer Lumber, or ...When it comes to framing a house, the choice of materials for headers is a critical decision. Headers are structural elements that support the weight of the load above openings like doors and windows. Two commonly used options for headers are Laminated Veneer Lumber (LVL) and traditional 2x12 lumber. In this blog post, we'll explore the benefits and issues associated with each of these choices ...Sep 26, 2022 · Glulam vs LVL. Glulam vs LVL – Glulam is made by bonding together boards that are cut from the same log. The boards are arranged so that the grain of each board runs in the same direction. This gives glulam beams great strength and stability. LVL, on the other hand, is made by bonding together boards that are cut from different logs. Treated Parallam® Plus PSL. The ideal solution for any exterior application. Use beams, headers, and columns made from Weyerhaeuser's Parallam PSL and open up a whole new world of design options for the interior of a home. Create long, clear spans and support heavy loads, whether inside or out in the elements.In any construction project, it is crucial to ensure the structural integrity and safety of the building. This is particularly true when it comes to determining the appropriate bea...The chords are made of either microllam®lVl, TimberStrand lSl, or top-quality mSr 2X6 or 2X4 lumber, and the webs are pin-connect- ed steel tubing. our open-web product line consists of: nTJL™ and TJLX™ trusses are light- weight and efficient. nTJW™ truss is a slightly heavier-duty truss for mid-range spans.Structural Engineering Blog. <p>Engineered wood connectors are designed to strengthen connections in engineered wood applications. These metal (steel) connectors attach engineered wood members to other members to provide …Apr 20, 2023 · This is a high beam strength compared to other engineered wood beams. On the other hand, LVL has a mean strength ranging between 32.3 N/mm 2 and 97.2 N/mm 2, depending on the beam size and quality of the veneers. With a constant strength of 54.7N/mm 2, glulam beams are stronger than LVLs. Glulam vs LVL. Glulam vs LVL – Glulam is made by bonding together boards that are cut from the same log. The boards are arranged so that the grain of each board runs in the same direction. This gives glulam beams great strength and stability. LVL, on the other hand, is made by bonding together boards that are cut from different logs.University of MichiganThe Fb and E values are certainly no match for APB, LVL and PSL, but the performance of TimberStrand is impressive. It worked for most of the applications in our case house. It is worth noting that the 18-foot garage-door header application pushed TimberStrand beyond its structural limit. TimberStrand Header comes only in 3 ½” widths in ...According to the tables for a dead load of 15 and live load of 25 I can go with several combinations of LSL, LVL, or PSL that range from 3.5″x14″ to 5.25″x11..25″ for a RO of 18′ 3″. I have a few questions…. What are the relative merits of the three beam types that they offer LSL (Timberstrand), LVL (Microlam) and PSL (Parallam).Photo 1. Click to enlarge. Photo 2 (below) shows a 40-foot PSL girder supporting the end of a PSL beam in a galvanized steel stirrup. This beam supports a laminated veneer lumber (LVL) joist on ...Sep 26, 2022 · LVL uses heat and pressure to bind thinly sliced veneers together, a process that is particularly accommodating to narrow beam dimensions. Its shear strength is superior to LSL but doesn’t quite match PSL’s ability to withstand bending stress. LVL is more expensive than LSL but is affordable compared to PSL and glulam. Source: materials ... Laminated Veneer Lumber (LVL) and Laminated Strand Lumber (LSL) are engineered structural materials manufactured by bonding wood veneers or strands together with a structural adhesive to form a solid member of end sections and length limited only by manufacturing, transport and handling capabilities. Because of their laminated structures, …Also known as Microlam, LVL form of peeled or cheated thin veneers placed in a parallel layout and joined together under heat and pressure. The standard LVL sizes include 3 ½, 5 ¼ and 7-inch widths, and depths of 9 ½ to 24 inches deep. The columns are available in 4 × 4 and 8 × 8 sizes. The highest reason why the builders so commonly use ...University of MichiganPWT Treated LVLs are available in beams, columns, and joists. The beams come as small as 1-3/4 in. by 9-1/2 in. up to as large as 5-1/4 in. by 18 in. The joists, all 1-1/2 in. wide, come in depths from 3-1/2 in. to 11-1/4 in. (in other words, the same as nominal lumber sizes 2×6 through 2×12). pacificwoodtech.com. — Matthew Millham, deputy ...No, PSL and LVL are not the same. PSL stands for Parallel Strand Lumber, which is made from laminating two pieces of wood together, while LVL stands for Laminated Veneer Lumber, which is made from several thin layers of wood bonded together. Both of these products are used in the construction industry and have similar strengths and limitations ...Microllam® LVL beams work well in applications all over the house. They can easily be built-up on site to reduce heavy lifting. No matter where they’re used, they install quickly with little or no waste. ... tb-305 - Resawing Microllam LVL, Parallam PSL, and TimberStrand LSL; tb-310 - Use of Topical Coatings with Weyerhaeuser Engineered Wood ... Parallel Strand Lumber (PSL) provides attributes such as high strength, high stiffness and dimensional stability. The manufacturing process of OSL enables large members to be made from relatively small trees, providing efficient utilization of forest resources. In Canada, PSL is fabricated using Douglas fir. By checking this box, I agree to receive communications from Simpson Strong-Tie in accordance with their . <p>Face-mount hangers for engineered wood product (EWP) connectors are specifically designed to attach EWP beam members to other members in any structural system. Face-mount hangers for engineered wood are integral building design ...Choose the correct laminated veneer lumber span size by finding the correct span size for the LVL beams you are using and the spacing of the floor’s support columns on a LVL span s...Parallel Strand Lumber (PSL) provides attributes such as high strength, high stiffness and dimensional stability. The manufacturing process of OSL enables large members to be made from relatively small trees, providing efficient utilization of forest resources. In Canada, PSL is fabricated using Douglas fir.The primary difference between LVL (Laminated Veneer Lumber) and PSL (Parallel Strand Lumber) is their core construction. LVL is composed of many thin veneers, or layers, of wood that are laminated together while PSL is composed of parallel strands of wood that are bonded together.No, PSL and LVL are not the same. PSL stands for Parallel Strand Lumber, which is made from laminating two pieces of wood together, while LVL stands for Laminated Veneer Lumber, which is made from several thin layers of wood bonded together. Both of these products are used in the construction industry and have similar strengths and limitations ...According to the tables for a dead load of 15 and live load of 25 I can go with several combinations of LSL, LVL, or PSL that range from 3.5″x14″ to 5.25″x11..25″ for a RO of 18′ 3″. I have a few questions…. What are the relative merits of the three beam types that they offer LSL (Timberstrand), LVL (Microlam) and PSL (Parallam).Features. LVL is stronger and more stable with a higher strength-to-weight ratio than conventional solid sawn lumber. Multiple pieces (typically used in pairs) can be fastened together to obtain greater thicknesses, resulting in greater strength to carry/support heavier loads. E Value (Modulus of Elasticity) = 1.9E or better.Eastern Parallam PSL is manufactured at the Buckhannon, WV plant and provides enhanced protection from the elements when it matters most - during construction. You’ll see the difference from the start—thanks to our new and innovative proprietary sealant. Read more about Eastern Parallam PSL. Eastern Parallam® PSL Product Overview TJ …According to the U.S. Department of Agriculture, market share for engineered wood products such as glulam, I-joists, and laminated veneer lumber (LVL) is forecast to continue its steady growth, with glulam production during 2017 (271.3 million board feet) up 5.6 percent from the previous year; engineered wood I-joist production (518 million ...LVL is made like plywood, except instead of orienting the grain at 90° with each layer, all the layers have the grain in the same direction, pretty much like real wood except there aren't any weak spots. Glulams are basically a stack of 2x6's glued together. Prettier than LVL's but more expensive. PSL is made from strands bonding together in a continuous press using waterproof adhesives with a phenol-formaldehyde base. It can made using waste materials from plywood and LVL production, with species commonly including Douglas-fir, pine and western hemlock, among others. PSL exhibits a rich texture and retains numerous dark glue lines. Description: Design information for TimberStrand LSL Stair Stringers and SturdiStep Stair Treads Document ID #: 9010 File Type: pdf File Size: 1.3 MB File Date: October 2022 ...Some veteran tech watchers are making noises about a new bubble in the market. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and its partners. I ag...Language (United Kingdom) Italy. italiano (Italia)The Pakistan Super League (PSL) is one of the most highly anticipated cricket tournaments in Pakistan. Fans eagerly await the fixtures for each season, as they plan their schedules...Jun 13, 2019 · The Pros and Cons of Engineered Lumber. Boise Cascade says its Versa-Stud laminated veneer lumber is engineered for builders who want strong, stiff, and straight walls. My building career started in the ’90s, working for a company that used panelized systems for its houses. The walls were preframed in a factory and delivered to our jobsites ... New rules for online political advertising will be put forward by European Union lawmakers next year, with the aim of boosting transparency around sponsored political content. The ...Microllam® LVL 18–19 Parallam® PSL 20–21 Snow Roof load Tables TimberStrand® LSL 22–23 Microllam® LVL 24–25 Parallam® PSL 26–27 Non-Snow Roof Load Tables TimberStrand® LSL 28–29 Microllam® LVL 30–31 Parallam® PSL 32–33 Beam Details 34 Window and Door Header Details 34–35 Nailing on Narrow Face 35 Allowable Holes 36When it comes to framing a house, the choice of materials for headers is a critical decision. Headers are structural elements that support the weight of the load above openings like doors and windows. Two commonly used options for headers are Laminated Veneer Lumber (LVL) and traditional 2x12 lumber. In this blog post, we'll explore the …Wood Beam Design and Installation Considerations. By Jerad Bankston, P.E. The successful design and installation of engineered wood beams such as Microllam® LVL, TimberStrand® LSL and Parallam® PSL goes beyond just looking up a member in a table. Knowing how the beam will be loaded (either side loaded or top loaded) and the overall ...May 18, 2023 ... Comments ; LVL engineered Lumber Explained! Detroit DIY · 7.9K views ; How It's Made: Laminated Veneer Lumber & Parallel Strand Lumber. Architect&nb...The following design resources are available for these products: Technical Bulletin TB-500 is for design professionals who want to properly specify deep depth Microllam® LVL beams. 2.2E Parallam Specifiers Guide (Pacific Coast & Northwest only) can be used to design 2.2E Parallam® PSL deep beams. You can check product availability and pricing ...1 Answer. Finally found the answer, they are equivalent and interchangeable as long as with the same grade (1.5 1.6 1.7 ect) here some info (in french) about the two : See section 4.5. By clicking “Post Your Answer”, …About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Microllam® LVL and TimberStrand® LSL is appropriate for dry-use applications only (generally not directly exposed to precipitation) and cannot be pressure treated. Neither product is suitable for the pressure treatment process due to material density and adhesive content. Also some wood species used in their production may not be appropriate ...In fire testing of LSL (along with LVL and PSL) the char rate for composite lumber products were comparable to those of solid-sawn lumber and within the range previously found for different species of solid-sawn lumber. Mass timber’s fire safety is backed up by rigorous fire testing in Canada and around the world.Feb 8, 2024 · PSL beams cost between $20 and $90 per linear foot and are the most expensive type of engineered beams in this article. Of course, installing them doesn’t come cheap, and you should expect to pay between $100 and $200 per foot of installed material. The exact amount you’ll pay for installation and purchase varies, and buying and installing ...
How to Decide Which Product: A clear understanding of the differences between LVL and PSL and how these differences influence application and performance. Treated vs. Untreated: Insights into the advantages of PSL, including when and why to opt for treated options.. Days inn corpus christi room 158
Parallel Strand Lumber (PSL) provides attributes such as high strength, high stiffness and dimensional stability. The manufacturing process of OSL enables large members to be made from relatively small trees, providing efficient utilization of forest resources. In Canada, PSL is fabricated using Douglas fir.According to the U.S. Department of Agriculture, market share for engineered wood products such as glulam, I-joists, and laminated veneer lumber (LVL) is forecast to continue its steady growth, with glulam production during 2017 (271.3 million board feet) up 5.6 percent from the previous year; engineered wood I-joist production (518 million ...Similar to LVL, PSL clips the veneer sheets taken from a log into 5/8" wide strands up to eight feet long. The strands are coated with adhesives, then subjected to pressure and microwave heating to cure the adhesives. The resulting billet, or block of lumber, can reach measurements up to 11 inches by 20 inches by 66 feet.What is the difference between stronger PSL and LVL in this regard? Parallel Strand Lumber (PSL) In PSL, the length-to-thickness ratio of strands is around 300. This product, like LVL and glulam, is used in beam and header applications where high bending strength is required. PSL is also commonly used as load-bearing columns.The Pakistan Super League (PSL) has become one of the most popular cricket tournaments in the world, attracting fans from all corners of the globe. With the advancement of technolo...By: Olin Wade (Remodel or Move Stuff) No, PSL and LVL are not the same. PSL stands for Produced Strength-Level lumber and is a type of treated wood that is pressure-treated with preservatives to resist decay and termites. LVL stands for Laminated Veneer Lumber and is a type of engineered wood that is made by gluing several thin layers of wood ...Can I use 2.0E Parallam® PSL and 2.0E Microllam® LVL mixed together as a single beam? Pergolas, Sunshades and Arbors: Beam and Post Design Guidance; Sizing a Beam; TJI® Joists Used As Wall Studs ; Design of Column Hardware Fastened Into the Narrow Face of SCL; Allowable Axial Loads for Trus Joist® ColumnsThis is a high beam strength compared to other engineered wood beams. On the other hand, LVL has a mean strength ranging between 32.3 N/mm 2 and 97.2 N/mm 2, depending on the beam size and quality of the veneers. With a constant strength of 54.7N/mm 2, glulam beams are stronger than LVLs.Apr 17, 2018 ... I could understand this with an LVL or an LSL, but is it also the case with a PSL? Hence the title of this post. If this is an issue, what ...A. Individual LVL members or wood I-beams won’t resist fire as well as the solid wood members they replace. However, fire ratings are based on assemblies, not individual members. Several manufacturers of LVL and wood I-beams have obtained fire ratings on whole floor and ceiling assemblies by using their products with a Type X …Stuff To Blow Your Mind's Joe McCormick joins STDWYTK to talk the controversial theory of the bicameral mind. Find out more about it at HowStuffWorks. Advertisement Humans have bee...Jun 29, 2015 · These nails may not be readily available at your local lumber yard and with a 0.207” diameter, certainly won’t fit in your nail gun. At an 8’ height assuming #2 spruce-pine-fir, the capacity of this column is less than 8,000 lb while a solid 5.25″x 5.25″ Parallam® PSL (slightly wider) will support 26,650 lbs! The allowable hole diameter depends on several factors such as member depth and width, loading, span and hole location. In the ForteWEB™ scenario below, two 12” holes centered along the depth where the first hole is 4 ft. and the second hole is 9 ft. from the left support were added to a 7” x 18” 2.0E Parallam® product spanning 15 ft.University of MichiganDescription: Table of allowable axial loads for 2.0E or 2.2E Parallam® PSL columns. Document ID #: tb-604. File Type: pdf. File Size: 0.2 MB. File Date: August 2022. Document Types: Technical Bulletins & Resource Sheets Categories. Engineered Lumber; Products. Parallam® PSL ColumnsParallam ® PSL is made by laminating strands of veneer together to form large billets. These billets are then cut into specified beam and column sizes. The finished solid section rectangular product is ideal for long span/high load applications. For information on our preservatively treated Parallam ® PSL, click Parallam® Plus PSL .TimberStrand® LSL Rim Board. Engineered for consistent performance, Weyerhaeuser's TimberStrand® Laminated Strand Lumber (LSL) starts straight and stays straight. It’s an innovative and versatile building product for a diverse range of applications such as tall walls, beams, rim board, sill plates and more..