Simpson Strong-Tie evaluated the SDWC15600, SDWS22400DB, SDWS22600DB, SDWS19600 and SDWV13400 screws for use in cross-laminated timber (CLT) butt-joint and half-lap diaphragm connections. Strong-Tie DIY - Projects for a strong and beautiful home. A tearpad for Canada showing on one side the hardware needed for a deck system, and on the other side the hardware needed for a patio cover system. Structural sheathing between the ledger and rim board shall be a maximum of 1/2" thick and fastened per code. 11. The piece outlines the vital components of a deck constructed with a continuous load path in mind. Capacities based on the AISI S100 Specification Sections E2.4 for This letter includes details of fastener connections designed and analyzed for use as alternates to those included in DCA6 subject to approval by the local building department. Sole or Top Plate to Rim/Blocking using SDWS and SDWH Screw. Robertson first pointed out that by design, nails are less brittle than screws, which leads to an increase in shear strength for nails. Copyright © 2018 Simpson Strong-Tie Company Inc. All Rights Reserved Contact Webmaster with questions or comments Privacy Policy User Agreement Products Wood Connectors Fastening Systems Lateral Systems Anchoring Systems Repair, Protection & Strengthening Systems Resources Literature Software & Web Apps Technical Topics Training Video Library Customer Service Technical Questions Contact Us Product Use Information Customer Survey Where to Buy Dealer Locator For Homeowners Strong-Tie DIY High Wind-Resistant Construction Soft-Story Retrofit for Building Owners Deck Ideas, Planning & Safety About News Our History Careers Research & Testing Investor Information Connect With Us   Sign Up for Our Newsletters Green Building and LEED Frequently-asked questions. MASA/MASAP Alternate Strong-Drive® SDWS Timber Screw Installation. The Strong-Drive® SDWS Timber and SDWH Timber-Hex screws may be used to attach a sole plate or top plate to a rim board and blocking material according to details provided in this letter. What Is the Shear Strength of a Deck Screw? Pull-out Resistance - Amount of force required to pull a fastener out of a specified thickness of wood or steel. Corrosion Information Guidelines for selecting the proper connector coatings and fasteners. Find all the screws you need at prices you can't beat. Designed to provide an easy-to-install, high-strength alternative to through-bolting and traditional lag screws. A flier providing features, benefits and Canadian limit states load tables for the Strong-Drive® SDWS Timber screw. TimberLOK is a heavy duty wood screw for applications such as attaching rafter or trusses to the top plate, landscape timbers, fences, decks, headers, stair stringers and more. For screws located at least 2" but less than 6" from the end, use 50% of the load per screw and 50% of the table spacing between the end screw and the adjacent screw, and for screws located between 2" and 4" from the end, predrill using a 5/32" drill. The Strong-Drive SDW EWP-Ply screw is a high-strength structural screw specifically designed for fastening multi-ply wood members, such as engineered wood products and solid sawn lumber. Values are based on the lesser of withdrawal from the main member or pull-through of a 1 1/2" side member. The metal of the hook will snap before the screw does, if it's installed correctly. A catalog featuring connectors and fasteners for mass timber construction solutions. The tabulated reference withdrawal design value, W, is in pounds per inch of the thread penetration into the side grain of the main member. Screw Fastening Systems Self-Drilling Screw Fastener Selection and Design 3.6.1 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015 157 Thread Pitch The thickness of material being fastened and diameter of Allowable withdrawal load for DF/SP/SCL is 172 lb./in. 3.3 Wood Material: Wood main and side members must be solid-sawn lumber or boards having an assigned specific gravity as given in Tables 2, 3, 4 and 5 of this report. Finely threaded screws are actually much stronger. 2/3 of the nominal screw length. Alternate Fasteners for Connection Details in AWC DCA6 with Strong-Drive® Screws. Catálogo que incluye información sobre productos nuevos y las instrucciones de instalación y especificaciones correspondientes para los sujetadores Simpson Strong-Tie® y los sistemas Quik Drive®. per inch of thread embedded *  Design Head Pull-Through Strength  Approx 100 lbs. While it is designed for wood applications it is also functional for other materials like masonry, drywall, plastic, and up to 24ga steel. Full penetration is the screw length minus the side member thickness. Provides users with a web-based approach to calculating capacities for single bolts, nails, lag screws and wood screws per the 2015 NDS. All applications are based on full penetration into the main member. Strong-Drive® SDWS TIMBER Screw Structural Wood-to-Wood Connections Including Ledgers. If you need a screw to hold 100 lbs of force, then it’s easy to simply reach for screws that say “100 lbs” right on the package. They are either produced with cut thread screws, which have a tapered shank, or rolled thread screws, which have a constant shank diameter. Structural screws aren’t cheap: they generally cost several times more than an equivalent lag screw. End screws shall be located 6" from the end and at 1 1/2" to 2" from the bottom of the ledger. Both lateral (single and double shear) and withdrawal capacities can be determined. Fastener spacings are based on the lesser of single fastener ICC-ES AC233 testing of the Strong-Drive SDWS Timber screw with a safety factor of 5.0 or ICC-ES AC13 assembly testing with a factor of safety of 5.0. Copyright © 2018 Simpson Strong-Tie Company Inc. A catalog including new product information as well as any applicable specification and installation instructions for Simpson Strong-Tie® fasteners and Quik Drive® systems. Wire Tensile Strength ... 266GRABBER® XteK ® Metal to Wood Screws, ... Shear Strength - Measure of the force that when applied at a right angle, will break a fastener. Teks ® Metal Fasteners are the original self-drilling screws developed to drill, tap, and fasten metal in one motion. Fasteners called wood screws are a metal screw used to clamp wood, chipboard, and MDF. Hardened, high-quality, heat-treated steel means virtually no chance of shear-offs. Reference Lateral Design Values for NDS Geometries with Strong-Drive® Screws. A technical document featuring engineering information for structural fasteners featured in the C-F-2019 Fastening Systems Catalog. 204 South 6th Avenue, Mansfield, TX 76063 | P:469.865.2800 | F:469.865.2850, Drywall Anchors - Heavy Duty Wall Anchors, Stainless Steel Fence, Deck & Patio Nails, Stainless Steel Collated T and Joist Hanger Nails, Stainless Steel Nyloc Nut - Nylon Insert Lock Nuts, Stainless Steel Structural & Heavy Hex Nuts, Stainless Steel Thumb Nuts / Knurled Nuts, Stainless Steel Security Screws and Drivers, Stainless Steel Phillips Pin Head Security Screws, Stainless Steel Socket Pin Head Security Screws, Stainless Steel Torx/Six Lobe Security Screws, Stainless Steel Half Dog Point Set Screws, Stainless Steel Button Socket Head Cap Screws, Stainless Steel Cylindrical Socket Head Cap Screws, Stainless Steel Flat Socket Head Cap Screws, Stainless Steel Low Profile Socket Head Cap Screws, Stainless Steel Countersunk Finishing Washers, Stainless Steel Internal Tooth Lock Washers, Adhesive Dispensing Equipment & Accessories, Chemicals, Lubricants, Paints & Cleaners, Surface Irregularity Testing Product Accessories, Cigarette Disposal & Cease Fire Receptacles, Chain Tong & Strap Wrench Parts & Accessories, Screwdriver & Nutdriver Parts & Accessories, Die-Cast Zinc Hinges with Elongated Holes, Refrigeration Regulators & Charging Hoses, Pneumatic Reciprocating Saw Parts & Accessories, Pneumatic Impact Wrench Parts & Accessories, Pneumatic Belt Sander Parts & Accessories, Pneumatic Die Grinder Parts & Accessories, Multi-Purpose Tools Corded Parts & Accessories, Safety Storage Cabinet Parts & Accessories, Safety Storage Container Parts & Accessories, Bloodborne Pathogen & Personal Protection, Single Serve Electrolyte Replacement Packs, Liquid Concentrate Electrolyte Replacement, Ready-to-Drink Electrolyte Replacement Drinks, Solder, Brazing, & Other Related Consumables, MIL Spec Fasteners and Aerospace Fasteners. A technical bulletin providing information on how guard posts, rails and balusters are installed using fasteners. * Click on the nominal size to find products. and for SPF/HF withdrawal is 121 lb./in. Rolled thread screws: At least 4X the basic screw diameter or 2/3 the nominal screw length (whichever is greater). LSL wood-to-wood applications that require 4 2", 5", 6" and 8" SDS screws are limited to interior-dry use only. Fastening Systems Technical Supplement for Canada. But in hardwoods, a drywall screw will usually fail before the wood fails. Home centers carry the most commonly used structural screw styles and sizes, but usually only one brand. This high performance wood screw is not your average screw. Structural screws meet stringent engineering standards. The strength of a through-bolted connection for multi-ply beams, deck posts, carrying beams and more. The longer the screw, the better it will hold the surfaces being joined into a unit. A technical information addendum for Simpson Strong-Tie Fasteners in Canada. ings—nails, spikes, screws, bolts, lag screws, drift pins, staples, and metal connectors of various types. 4. F = allowable withdrawal load or force - lb per inch of penetration (lb/in). The force on the screw is straight down, and snapping the neck of a screw is not easy. F = 2850 SG 2 D (1) . Fastener Production Information and Stuff & Things, Strong-Drive® SDWS TIMBER Screw (Interior Grade), Soft-Story Retrofits for Building Resiliency, Repair, Protection & Strengthening Systems, Unreinforced Masonry (URM) Building Retrofit, Cross-Laminated Timber (CLT) & Mass Timber Connector Products, Anchoring Solutions for Value-Added Manufacturing, Component Manufacturer Software Solutions, Outdoor Living: Where Great Backyards Begin, New Product Testing in a Virtual Environment, Simpson Strong-Tie Materials Demonstration Laboratory at Cal Poly, Simpson Strong-Tie Research and Testing Laboratory at WSU, Strong-Drive® SDWS TIMBER Screw (Exterior Grade), Fastening Systems Technical and Installation Notes, C-F-2019TECHSUP, pages 22–25, 45–47, 52–53, 75, 77–78, 106, 109–110 and 115–118, Load Tables, Technical Data and Installation Instructions, Contact Webmaster with questions or comments, SawTooth™ point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications, Bold thread design provides superior holding power, Underhead nibs offer greater control when seating the head, Large low-profile washer head provides maximum bearing area (0.75" head dia. All applications are based on full penetration into the main member. Product Sitemaps Masonry and Concrete do require pre-drilling. See additional Load Tables, Technical Data and Installation Instructions for the Strong-Drive® SDWS Timber screw. 1. Ledger shall be hem-fir, Douglas fir–larch, or southern pine species. Full penetration is the screw length minus the side member thickness. Spacing includes NDS wet service factor adjustment. Multiple ledger plies shall be fastened together per code independent of the SDWS screws. For ledger-to-rim attachment with 1/2" gap, see. Wood Screws: Dimensions & Mechanical Specs. Material Strength – 60,000 psi J82 60M or Grade 1 or Class 4.8 A guide to recognizing deck deficiencies and building or retrofitting safer, longer-lasting outdoor decks, with 2018 IBC and IRC code-compliant solutions for using the latest connectors and fasteners. Shear strength is the amount of force a fastener can handle from the sides. Material strength for threaded fasteners and headed industrial fasteners from Elgin Fasteners Group is listed below by grade, type and class and separated into 60,000 psi, 75,000 psi and 120,000 psi. Double-barrier coating provides corrosion resistance equivalent to hot-dip galvanization, making it suitable for certain exterior and preservative-treated wood applications, as described in the evaluation report. Un système de connexion complet pour la construction de terrasses. Screw shear strength is the average value, and tension strength is the lowest value listed in CFSEI Tech Note (F701-12). A two-page tear pad including updated features and benefits of the Strong-Drive® SDWS Timber and SDWH Timber-Hex screws. Un catálogo con proyectos prácticos y atractivos DIY para el hogar y el patio que utilizan conectores y sujetadores Simpson Strong-Tie® y accesorios Outdoor Accents®. Screw size doesn’t necessarily determine strength. This indicates that glue surface area and glue penetration into the surrounding solid wood fibres is a key to joint strength. An educational reference guide for DIY’ers about safe deck construction. Shear strength for screws is lower than solid shank nails..... the dia. The "shear strength", which is the amount of sideways force the screw can resist before it snaps, is high enough. For screws having a diameter equal to or larger … Screws, on the other hand, may not be as forgiving, but their threaded shafts hold better in wood and draw boards together much more tightly and they have greater tensile strength. I can't say one type of screw is "better" than the other, but when working with soft woods or when splitting is a concern, drywall screws certainly have their advantages. A flier providing features, benefits and Canadian limit states load tables for the Strong-Drive® SDWS Timber and SDWH Timber-Hex screws. of the screw includes the threads which has very little strength except in pull out conditions so you will need to go up on screw size to increase shank size to equal that of nails.... there are industry charts online if you need actual limitations Total withdrawal load is based on actual thread penetration into the main member. Threads cut by wood screws into wood, or by sheet-metal screws into fiberglass, lack the strength, consistency, and durability that machined threads inside a metal nut or other thick metal component can provide. Screws shall be placed 1 1/2" to 2" from the top and bottom of the ledger or rim board with 3" minimum and 6" maximum between rows and spaced per the table. Habitat for Humanity We've donated more than $2.5 million to support safe, strong, affordable housing. © 2020 AFT Fasteners. The allowable lateral load for a single-screw connection must be taken as the lesser of: (a) the reference lateral design value given in Table 4, adjusted by all applicable adjustment factors, and (b) the allowable screw shear strength given in Tables 1A through 1F. Allowable loads are shown at the wood load duration factor of C … Double-shear applications with Strong-Drive® SDW Truss-Ply and SDWS Timber screws in wood side members. It is code listed under IAPMO UES ER-192 and meets 2015 and 2018 IRC® and IBC® code requirements for several common wood framing applications. A nail, has more elasticity than a screw. This letter details the alternative MASA/MASAP installation using SDWS screws — with two legs up on a 2x4 vertical rim board or blocking over a 2x or 3x sill plate. Driver bit included in every box. Drill, Tap, Fasten in One Motion. Strong-Tie DIY - Proyectos para una casa resistente y hermosa. The screw also caused a crack in the piece of wood, which the thinner drywall screw did not. We use cookies on this site to enhance your user experience. Wood-to-wood, wood-to-concrete, and wood-to-steel connections are possible. They are either produced with cut thread screws, which have a tapered shank, or rolled thread screws, which have a constant shank diameter. where . For utmost rigidity, strength, and service, each type of fastening requires joint designs adapted to the strength properties of wood along and across the grain and to dimensional changes that may occur with changes in moisture content. The table above also provides SDWS screw spacing for a wide range of materials commonly used for rim board, and an alternate loading condition as required by some jurisdictions. 3/2D3/4L (inch–pound) (8–14b) where p is maximum withdrawal load (N, lb), D shank di- ameter (mm, in. Wood Screws: Performance & Mechanical Specs; Description. Simpson Strong-Tie Strong-Drive structural screws may be designed at reduced shear capacities when installed at closer connection geometries than those listed in the evaluation reports. A Complete Connector System for Building Decks. It is made with carbon steel and coated for … 150 lbs. In fact, a 1/4 UNF thread is roughly 14% stronger than a UNC thread, even if the screws are the same size. A booklet featuring practical and attractive DIY projects for home and yard using Simpson Strong-Tie® connectors and fasteners, including Outdoor Accents®. Sawn lumber rim board shall be spruce-pine-fir, hem-fir, Douglas fir–larch, or southern pine species. Cut thread screws: Aprox. Engineering specs: average shear strength of #9 shank is 2771 lbs, average pull-out strength 902 lbs (screw pull out is calculated with a 3" length screw in the wood species: yellow pine.) The bending yield strength value, Fyb, for the wood screw being used also is an input to the yield mode equations. Privacy Policy. The tabulated reference withdrawal design value, W, Tabulated reference withdrawal design values, W and W. Embedded thread length is that portion held in the main member including the screw tip. Internal drive screws with a slot and currently and far more commonly a Pozi® or Phillips® drive. Design Shear Strength  Approx. Specified minimum bending yield strength, allowable tensile strength, and allowable shear strength of the fasteners are listed in Tables 1A, 1B, 1C, and 1D. The Strong-Drive SDWS Timber Screw (Exterior Grade) is ideal for the contractor and do-it-yourselfer alike. W-Cut TM provides low installation torque which allows for fast driving and ease of install; Zip-Tip TM allows for faster penetration; Unique thread design draws two substrates together … of penetration of the threaded part. Now lets look at shear strength. SDWS Timber Screws SDWS Timber Screw to Fasten Wood Structural Panel Single-Surface Splines on CLT Diaphragms. With over 50 years of experience and innovation, Teks Metal Fasteners delivers Pros' with optimal drilling performance and holding power. RSS Rugged Structural Screw is an easy to install lag alternative. Shop from our vast selection of self-drilling screws, to improve work efficiency. 2009/2012 IRC Compliant Spacing for a Sawn Lumber Deck Ledger to Band Joist with 100 PSF Live Load and 10 PSF Dead Load. Fastener Loads for Plywood – Screws Shearing of screw shank Crushing of plywood FIGURE 1 Simpson Strong-Tie has evaluated Strong-Drive SDWS Timber Screws (SDWS22400DB and SDWS22600DB) for use in cross-laminated timber (CLT) diaphragm single-surface splines. A thread forming screw having a gimlet point, and a sharp crested, coarse pitch thread. 5. A comprehensive guide to help Designers select the most appropriate connections for challenging, high-wind regions. Shear failure of the screw shank occurs at the wood-metal interface. wood has occurred, resistance to fastener-head embedment into the metal causes the screw to become a shear specimen and joint behav-ior is dependent upon the shear strength of the fastener. Higher values for screw strength (Pss, Pts), may be obtained by specifying screws from a specific manufacturer. Fasteners for Code Compliant Deck Ledgers. Allowable Loads for Strong-Drive® SDS, SDWS, and SDWH Structural Fasteners in Sawn Lumber Deck Ledger to Band Joist Applications. A thread forming screw having a gimlet point, and a sharp crested, coarse pitch thread. * Click on the nominal size to find products. Wood screw threads are tapered to a sharp point; screw development has introduced points that reduce the potential for splitting the wood and allow assembly without a drilled pilot hole. Des recommandations de produits plus récentes sont incluses. Un étui à deux faces pour le Canada présentant le matériel nécessaire pour un système de terrasse et un système d’abri de terrasse. per inch of wood … All rights reserved. Allowable withdrawal load or force of a common wood screw into side grain perpendicular to the fibers of seasoned dry wood can be expressed as. The shear strength of a deck screw depends on several factors such as: Length; Thread type; Screw quality; Insertion technique; And the force used on the screw (lateral or withdrawal forces). Connectors and Fasteners for Mass Timber Construction Catalog. A tearpad showing deck connections on one side and patio cover system connections on the other. RSS Rugged Structural Screw. Allowable loads are shown at the wood load duration factor of C. Minimum fastener spacing requirements to achieve table loads: 6" end distance, 1 7/16" edge distance, 5/8" between staggered rows of fasteners, 4" between non-staggered rows of fasteners and 8" between fasteners in a row. Strong-Drive® Structural Wood Screws for Interior and Exterior Fastening Applications. Assigned specific gravity By clicking "I AGREE" below, you are giving your consent for us to set cookies. SDWS screw spacing values are equivalent to 2018 IRC Table R507.9.1.3(1) and 2015 IRC Table R507.2. ), Size identification on all SDWS screw heads, 6-lobe T40 drive provides positive engagement that makes the screw easy to drive and improves bit life (replacement driver bit — BIT40T-134-RC), Structural wood-to-wood/engineered including ledgers; mass timber connections including CLT wall-to-wall, floor-to-floor, surface splines and lap joints, Retail and mini-bulk packs include one 6-lobe, T40 driver bit; bulk packs include two driver bits. Lag Screw Alternative Structural Fasteners SDS, SDWS and SDWH. (except for drywall screws, which are brittle) The Strong-Drive® SDW screw is a 8.0mm diameter, high-strength structural wood screw specifically designed for fastening multi-ply wood members together such as plated trusses, engineered timber products and solid-sawn timber. Rows of screws shall be vertically offset and evenly staggered. Un guide de référence à destination des bricoleurs pour construire des terrasses sûres. A flier providing features and benefits of the Strong-Drive® SDWS Timber screw. 3/2D3/4L (metric) (8–14a) p=8,100G. And for structural jobs, check out our structural screws department for specially fasteners that will provide high tensile, torque and shear strength. * #8 deck screw in SYP  Design Withdrawal Strength  Approx 100 lbs. Canadian Factored Lateral Resistances — Strong-Drive® Screws Used for CLT Diaphragms. Un documento técnico información de ingeniería para los sujetadores estructurales que se incluyen en el C-F-2019SP Catálogo de sistemas de sujeción. 9 x 3" Gold Star FLAT HEAD Screws (1 Pound) SG = specific gravity of oven dry wood D = diameter of screw (in) Example - Screw Withdrawal Load SDW and SDWS Double-Shear Applications with Wood Side Members. A screw conversely has very little shear strength. Guard Post, Guard Rail and Baluster Installations Using Strong-Drive® Structural Fasteners. Only SPAX® construction screws and fasteners are engineered from head to tip to dramatically cut labor time and help you move on to the next job faster. A small amount of wood fibre was still adhered to the tenon, biscuit or dowel, but for the most part the joint failed at the glue line. Will produce a mating thread when assembled into wood or other resilient materials. Screws of nominal lengths too short to accomodate the minimal thread length will have threads extending as close to the underside of the head as practiceable. and (c) the allowable screw tension strength given in Tables 1A through 1F. This means as forces are pushed against the sides of a nail, the nail can bend slightly to accommodate these pressures. SDWS Timber Screw — Allowable Shear Loads — Spruce-Pine-Fir and Hem-Fir Lumber. Le document décrit les composants essentiels d'une terrasse dotée d'un chemin de charge continu. CE marked to EN14592. ), G specific gravity of the wood based on ovendry weight and volume at 12% moisture content, and L length (mm, in.) For in-service moisture content greater than 19%, use C. Loads are based on installation into the side grain of the wood with the screw axis perpendicular to the face of the member. Amplify Your Craft™ Premium Quality Construction Screws & Powerlags® For the pro that puts quality first, we work for you. In general, the weak link in the attachment of a fastener is the internal threads that the fastener's external threads engage.
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