How many hurricane ties per deck joist. 05: Determine Deck Joist Length with Cantilever.

Learn how to install joists for composite decking with th Simpson Strong Tie H1 clip is one of the most commonly used. Similarly, a 2×8 could cantilever between 1’-5” and 2’-4” based on wood type and spacing. Deck Lok® framing connectors, produced by Screw Products, Inc. They make buildings more resistant to the effects of high winds, especially in areas prone to natural disasters. 5” screws work with joist and stringer hangers, as well as post/beam brackets. long or 30 ft. 9. 02: Rim Joist. retrofitting an existing deck It is estimated that of the 40 million existing decks, only half are code-compliant. 5A resists both lateral and uplift loads. Toe nailing should be enough. G185 Hurricane Tie . It’s also important to take into consideration the shape of the existing joist. +. The overall height of the H2. 3(1) detail with 1,500 pound hold-downs, in two or more locations per deck. In this guide, we’ll discuss joist sizing, spans, spacing, and factors that affect material selection when framing a deck. I actually would have attached the hurricane ties to the joists and two outer beams and left the centre beam not done. We’re using a scrap of wood screwed to the joist as a brace to hold the joist in position while we fit the hanger, but you can also use a nail bent over to form a hook. This is a sturdy connection that meets the new code requirement and works 1. The detail transfers the lateral load by bypassing the joist hanger and ledger connections, and ultimately transfers it into the floor diaphragm of the support structure. Roofers use hurricane ties to reinforce the connection between the roof truss and the wall plate. $1345. An 8 gauge, 2. USP Stair stringer connector CSH-TZ where "CSH" refers to "Concealed Stringer Hanger". Simpson Structural Screws SD9112R100 No. Request Bulk Pricing. The spacing between joists is 12”o. H11Z Hurricane Tie. Quantity. The existing joist may have an excessive hump or crown. 99 $ 33 . for 2×6 deck boards. from the last joist, square to the rim joist, and mark the location. 5" = 118. LUS hangers have double-shear nailing — an innovation that distributes the load through two points on each joist nail for greater strength. If your joists are all nailed to the beams then you likey will be fine under normal conditions, if being inspected I would get more hurricane ties and finish the other two beams. H10A optional nailing to connect shear blocking, use 0. Always follow the manufacturer's installation instructions when installing deck hardware. The U-shaped design provides faster installation than using two single-sided ties. Rafter Condition; Truss Condition; H2. × Hurricane. Inside Vs. Showing 1 - 10 of 43 reviews. These metal ties can be used to make a connection to either the top or bottom plate, with several products that are suitable for double top plates and Sep 2, 2022 · Step 2: Fit the Sistered Joist. x 1-1/2 in. 3. Moving the rafter ties up only 16 inches from the plate (the maximum allowed by code) increases the tie force from 1,440 pounds to 2,160 pounds. <p>Seismic and hurricane ties are metal connectors with various configurations. Simpson Strong Tie Deck Guide - Shorewood IL SD Connector Screws. Double header or trimmer joists. Installation. Drive screws through every hole in the left side of the hanger to attach it firmly. The SDWC is tested in accordance with ICC-ES AC233 (screw) and AC13 (wall assembly and roof Installation. Joist to joist splice (See also Table 9. Additionally, they may be used to tie wood framing members to resist uplift and lateral forces. Pull and mark layout across the face of the rim joist using a square to extend the lines from top to bottom. The fully-threaded shank engages the entire length of the fastener, providing a secure connection. You need a different type of screw for each part of your deck. Jul 13, 2023 · This item: 25 pcs 2x6 Joist Hanger,LU26 20 Gauge Double Shear Face Mount Joist Hanger,Hurricane Ties for Rafters Tie Brackets Great for Floor Deck and Ceiling Joists $33. As part of a continuous load path, the H2. 162" x 3 1/2" nails are specified, use 0. 131" x 2-1/2" nails. The STHD incorporates many features that aid correct installation and improve performance. What they actually do vs. 5AZ is 6". Purchase the nails you will need and that, ideally, are made from the same material as the hurricane ties. 13. Simpson Strong-Tie H series of hurricane ties provide a positive connection between truss/rafter and the wall of the structure to resist wind and seismic forces. The HTT5-3/4 is designed to use a 3/4"-diameter anchor bolt. Mar 30, 2012 · Mark the ledger every 16 inches. 1, vertical loads shall be transferred to band joists with ledger in accordance with Section R507. Solid wood blocking should be equally spaced in rows, with a maximum of 4′ to 6′ apart. These versatile DTT connectors are also load-rated as a holdown for light-duty shearwalls and braced wall panel applications. bearing for in-line joists, it will be hard to drive the nails without splitting the joists, so metal connectors like the Simpson Strong-Tie H2. The maximum cantilever length is determined by the lesser of one-fourth of the joist span or the maximum cantilever length shown in MRC Table 507. Align a joist hanger with a scrap of lumber to the layout lines and flush with the joist top. The DTT2 can be used to satisfy the IRC provision for a 1,500 lb. I specifically show you how to install deck floor joists and joist hangers using 2x10 pressure treated lum Oct 13, 2015 · I'm using double sided hurricane ties to secure my joists to my beams for a deck I am building. 3(1) calls for a minimum of three 8d common or 10d box toenails from the joist into the beam. 76. Once the joist is in the correct place, slide it under it to where it fits very tight. The H1. 92/Item) Get it. 6. The Strong-Tie LUS28Z face mount joist hanger features a G185 ZMAX galvanized finish for added corrosion resistance and requires the use of hot-dip galvanized fasteners which meet the specifications of ASTM A153. <p>Stud plate ties offer general solutions for connecting the stud to the top and bottom plates to help create a continuous load path in rooftop lift resistance. Each clip is 5. Decks — Deck Boards Composite 1; Decks — Deck Boards Wood 3; Decks — Deck-to-House Lateral Connections 1; Decks — Guard Rail Post to Deck 1; Decks — Joist Connections to Beam 6; Decks — Joist to Beam/Ledger Attachments 5; Decks — Joists Bearing on a Beam 1; Decks — Lateral Load Connections 1; Decks — Post-to-Footings 16 Oct 7, 2020 · Today we give you information about joist hangers and how to correctly install them. 5” coated deck screw is most commonly used when fastening deck boards to joists. Use hot-dip galvanized (HDG) nails with ZMAX and HDG connector products. com Mar 27, 2021 · Joists can usually span up to 1. This rugged clip cradles the truss or rafter on two sides. Updated January 28, 2020. See the below span chart as well as the local codes and guidelines for your jurisdiction. 162" x 3 1/2" nails into the joist with no load reduction. This innovation distributes the load through two points on each joist nail for greater strength. 25 inches wide with 3/4-inch wide flanges. It can be downloaded from here. 6. Cross bridging to joists. Your joist span will depend on the size of the joists (i. Joist hangers install easily, eliminate the need for toe-nailing and are required by the building code in many areas. Deck Joist Tie. Ships from and sold by Equipement Polar. Header joist end nailed to joists along perimeter. R802. Railing posts require ½” diameter Jul 23, 2015 · Simpson strong-tie offers a diverse line of hangers to handle almost any application with top flange, concealed flange and field skew able and slope able options. ) 5. Jun 13, 2023 · 111 3 9. The reality is between 3’-1” and 4’-6” depending on the type of wood and spacing between joists. The cross-blocking adds significant structural rigidity to the deck. HTT5KT is sold as a kit with the holdown, bearing plate washer and Strong-Drive ® SD Connector screws. Structural Engineering Blog. H2. 06: Install Front Rim Joist. H11Z. 148″ and 0. With 3x carrying members: when 0. 131″ diameter) in face-mount hangers and straps. For new construction or to make an existing deck code-compliant, the DTT1Z® can be used as a tension tie to satisfy the 2015, 2018 and 2021 IRC provision for a 750 lb. They are metal connectors with holes for fasteners, such as nails or screws. Joist nails must be driven at an angle through the joist or truss into the header to achieve the table loads. Jan 11, 2024 · Deck joists are generally 6, 8, 10, or 12 inches in width, with 8 or 10 inches as the most common sizes. Add 1 to this value and round up the answer to the next whole number: 7. The DJT14Z deck joist tie is designed to attach 2x deck joists to the side of 4x or larger support posts. Hook a tape measure over the outside face of an end joist, then mark along the top of the ledger according to the planned on-center spacing. This is the second guide in a three-part series on how to build an attached deck. 99 Get it as soon as Wednesday, Jun 12 Posts on the outside (set back from corner). Blocking should be installed edge to edge to allow for fastening of the interior blocking. 01: Crowning of Joists. Fasten. 57. 5A) and offers a higher lateral allowable load, making it a cost effective and higher-performing solution to tie down a rafter roof. Install all the hangers per the layout and then install the rim joist, fitting the field joists into the hanger. This can force the truss plate off of the truss and compromise truss performance. Deck joists may terminate at a beam or ledger, rest on top of the beams Aug 23, 2022 · The joists must be fastened to the beam—Table R602. Rafter ties or ceiling joists support the rafters and sidewalls under gravity loads, including the dead load of the roof structure and live loads such as snow (above drawing). The IRC does require what is commonly refered to even here in Montana as "Hurricane Clips" My own house equated out to over 500 lbs of uplift in a 90 mph wind load R802. The DJT14Z can be installed with either nails or bolts. May 10, 2022 · Hunker: How to Calculate Load Bearing Capacity of a Flat Roof. The symmetrical design eliminates the need for separate right and left parts. Front-to-back concrete bond is strengthened by the slots below the embedment line and also aids in reducing spalling. 81Z installs with half the nails that are needed for two single-sided twist straps (like the H2. Sistering joists for a cantilever requires removing the rim joist and sliding the new joist in beside the existing one. Place. In situations May 9, 2022 · If you try to buy joist hangers for 2×12 joists, youll find that the common 18-gauge hangers used for deck construction top out at the 2×10 size. 2X8 vs 2x10 vs 2X12). 5". It features a G185 ZMAX galvanized finish. 101. SD9 screws replace 8d and 10d common and 1-1/2″ size nails and 16d sinker nails (all nails 0. The top rails extend beyond the posts to meet at the corner (see detail, below left). Hurricane Tie. Sep 9, 2012 at 5:09. Wall stud (2x4) to top plate Nov 5, 2023 · Use 10 screws for a standard u-shaped hurricane tie. 1 Review Ask a question. This tie provides a positive connection between truss/rafter and the wall of a structure, or a deck joist over top of a beam to resist wind and seismic forces. c. Designed to meet rigorous code standards, the HTT4 and HTT5 offer higher loads than their predecessors. Make a birdsmouth cut on the rafters if installing the tie on the inside of the wall. Joist Hanger (Zmax), 2 Inch x 6 Inch The LUS26Z joist hanger provides a strong connection between a 2x6 floor, ceiling or deck joist and the header. Strong-drive sd screws. Some carpenters get this wrong. 40625 + 1 = 8. </p> Nov 6, 2019 · 2. H8. 7. This is a versatile program that will help the user pick a joist hanger, truss hanger, multi-truss hanger, column base, column cap, holdown, mudsill anchor, hurricane tie, multi-ply lumber fastener, embedded anchor bolt or hinge connector. This guide assumes you have a good working Hurricane ties do not replace solid blocking. The H1AZ is designed for nominal 2x lumber and features a Zmax finish. Some hurricane tie models are available with Per the 2018 IRC, R507. In this video I will show you how to build a deck. MiTek RT series hurricane ties connect trusses and rafters to top plates. When installing ties on plated trusses (on the side opposite the truss plate) do not fasten through the truss plate from behind. In certain applications screws are easier and more convenient to Structural Engineering Blog. With posts outside the joists, the simplest approach is to use two posts at each corner, held back far enough to line up with the second joist, about 12 to 16 inches from the corner. The hurricane tie series features various configurations of wind and seismic ties for trusses and rafters. 9 by 1-1/2-Inch Structural-Connector Screw, 100-Pack. – crip659. 5" / 16" = 7. Roof and rafter hurricane ties, also called hurricane straps or strips, are galvanized or low-carbon steel connectors used to strengthen wood and metal-framed roofs. Collection:DTT/DJT14Z Deck Joist Ties. ZMAX ® coating; see Corrosion Information. Straps & Ties A35 – Framing Angle/Plate Installation. 300 mm (o. Products and technology that help people design and build safer, stronger homes, buildings, and communities. Use all specified fasteners. Starting at the left side of your deck, position one 2x8 joist hanger at each mark, so that they are plumb, and the inside of the bracket bottom is level with the bottom edge of the ledger. 2 per joist. The tie looks like below: I had been using 1. Add to cart. 5A – Hurricane Tie Installation; H2. Mar 22, 2022 · Proper installation and fastening of deck joists ensures the structural integrity of your new deck. 2. The joists and beams are to hold weight bearing straight down. ”. It is code listed in IAPMO UES ER-192 and meets 2018 and 2021 IRC ® and IBC ® code requirements for most common wood framing The Simpson H1AZ Hurricane Tie provides a connection between the truss or rafter and the wall of the structure that helps resist wind and seismic forces. Remember that your deck will be only as strong Aug 9, 2013 · In this installment I discuss why I cross block & why I'm installing the hurricane ties. floor joist to stud (balloon construction) 76. lateral load connection at two locations per deck. Begin the layout from the edge of the deck. This can help prevent corrosion. 07: Deck Surface Flat for Decking (How to Plane Joists) Depending on the size of the deck itself, whether your joists are spaced either 12 inches or 16 inches from the center, and the framing materials and size of deck boards used, deck joist spans may vary. 2 at each end. 40625. Before installing the intermediary joists, measure and mark the ledger for the location of each joist. The last guide gave an overview of the planning and design process. Reinforce the connection between the top plate and wall joists if needed. When pulling layout on an angle, use a Speed Square to align the tape at a 45° angle to the last joist. Accepted payments: Ships Jul 15 when you order now. The placement of joists are typically 12-16" apart. These U-shaped hurricane ties provide faster installation than using two single-sided ties. Use our calculator above to determine the proper joist span for It also suits for bearer to joist connection in flooring and deck framing applications. × Decks: Joists Bearing on a Beam. 05: Determine Deck Joist Length with Cantilever. Use specified HDG fasteners; see General Notes. Divide that difference by the sum of the on-center spacing of the floor joists: 118. Many builders underestimate the extreme importance of selecting and properly installing the appropriate joist hangers. These ties connect both solid-sawn and engineered lumber across a wide range of applications. Simpson Strong-Tie hurricane ties are designed to resist high winds and seismic forces by positively connecting trusses/rafters to the top of wall of the structure. Deck joists require a minimum of 1-1/2 inches of bearing on wood and 3 inches on concrete. The STHD is an embedded strap-tie holdown offering high loads and a staggered nail pattern to help minimize splitting. This screw is ideal for the contractor and do-it-yourselfer alike. They also allow for toe-nailing, plus support the underside of the joist. 5T – Hurricane Tie DTT2Z. Joining deck joists together begins by making sure your new joist material is the same height as the existing joist. Deck joists come in dimensional lumber lengths from 8 to 16 feet. With this in mind, the joist span can range between 6 ft, 10 inches, to 18 ft. 1 and lateral loads shall be connected per Section R507. Floor joists or deck joists to ledger board face : 4-6 8d or 10d toenails per side, 2x6 joist; number per side increases for deeper joists; Joist & rafter blocking : 3-8d, face nail from 2 nails from one side: Rim joist to surface of top plate or sill plate: 8d, 6" o. 5A Hurricane Tie eliminates the need for separate left and right parts. Whether you are attaching a deck that’s 3 ft. This item: Simpson Strong Tie H2. Leave the right side loose. In addition to the structural concerns that may occur, weather proofing and flashing can cause a long-term concern and the integrity of your deck may be at risk. Seismic and hurricane ties are metal connectors with various configurations. Tail joist A deck’s joists are the horizontal framing members that support the decking material. The H2. For deck framing, structural wood screws such as Simpson SDS 1. The H8 is versatile and has been tested for connecting I-joist rafters to double top plates as well as studs to sill plates. 8. Jul 16, 2007 · Single, double, triple, right and left orientation hangers are available for various applications. The larger the span, the larger the joists. With the joist Model # H3 Store SKU # 1001400334. 41. Examine your roof for diagonal beams. Nov 16, 2016 · by Shannon » Wed Nov 16, 2016 1:50 pm. Face-Mount Joist Hangers. A35 Studs to Plate Condition; A35 Joist to Beam Condition; CS/CMST14 – Coiled Strap Installation; CSHP – High-Performance Coiled Strap Installation; H1A – Hurricane Tie Installation. 3) states that “hold-down tension devices” be installed in at least two locations per deck. 11 Roof tie-down. The H11Z is specifically designed for 3x nominal lumber. The larg­er options can be used for many dif­fer­ent appli­ca­tions, but are typ­i­cal­ly used for land­scap­ing walls (8” screws) and post or beam con­struc­tion (10” screws). 131" x 2 1/2") Nail. 1. With only a 1-1⁄2-in. The end joists on a ledger need a hanger just like the rest of the joists, but using a regular joist hanger with out-turned flanges presents a problem: The outside flange extends beyond the ledger. $11273. Holdown. With trusses, you have a steel plate joined wood joint on the inside of the top double plate as opposed to a Feb 1, 2019 · Simpson’s instructions for which nail is used for nailing the strapping or tie-down to the framing lumber vary a bit by connector and its application but the most-common is the 8d (0. long, you will be required to use the hold-down tension devices in two locations. 5 times their thickness in feet. The H11Z holds a rafter or truss on both sides for high lateral load resistance. When using HTT tension ties with unreinforced concrete masonry, 3/4" post Straps & Ties A35 – Framing Angle/Plate Installation. As discussed in this article, deck joist span is important for designing decks to support heavy loads. 5A single-sided hurricane tie is designed to resist moderate loads at the rafter/truss-to-top-plate connection. Jul 16, 2009 · The new code section (R502. If you need more information or have additional questions, please contact the Simpson Strong-Tie Customer Service team at 800-999-5099. Deck joist spans depend primarily on how much weight the deck will bear. ----- The joist hanger in this video calls for 10d common, galvanized nails. While joist hangers are an expense, the ease and increased strength make them a better choice. 5AZ may be a safer alternative. Oct 31, 2022 · 2. What is really important is that the ears on the cross beam are being attached to a full width piece of material. What we think they do. Access is drilled through the ledger connection to allow passage of a rigid threaded rod that connects the two ties. The hold down device will have a minimum 750 lb capacity at 4 locations evenly distributed along the deck and 1 within 2' of each end of the ledger board. Joist hangers are better because they allow for more accurate placement of joists. $9200($0. The load-rated SD screw has been tested and approved for use in many popular Simpson Strong-Tie products. 03: Field Joists. #4. Provides a connection as part of a continuous load path to resist wind and seismic forces. 04: Breaker Board Joist Layout. Extra need for more anchors will depend if you need them for your local weather. , 9401 Bujacich Rd, Bldg 1B Gig Harbor, WA 98332 include models that can be used with stair stringers to attach the stringer to the deck rim joist using through-bolts. 9. Doing this means you can go to the hardware store and be sure that you are buying the right amount of clips. Oct 1, 2008 · In this example, when W = 960, the tie-force tension at the plate when there are rafters 24 inches on-center with a 4/12 pitch and a 12-foot span is 1,440 pounds. If your joists are to be installed 16 inches on center The 6” option typ­i­cal­ly replaces hur­ri­cane ties on rafters and trusses. Usually ships within 3 to 4 days. Measure 16 in. ) 76. Jul 23, 2015 · Simpson Strong Tie H1 18-Gauge Hurricane Tie 100-per Box. See full list on attainablehome. Apr 1, 2023 · Purchase the hurricane ties that are most appropriate, according to your measurements. Joist spacing is limited by the span rating of the decking being used, see MRC Table R507. Also suitable for connecting 2X deck joists on top of a perpendicular beam. I'm building an octagonal freestanding deck and having trouble figuring out how to attach some 2x6 floor joists to a rim joist at a 45° angle without having to buy angled joist hangers for $6-$11 a piece (I'll need 6 total). Hurricane ties can then be fastened to wall construction and the wooden roof. 4. 5T – Hurricane Tie Apr 19, 2018 · By HomeAdvisor. Ledger strip to wood beam. 82. The first is our old standby, the downloadable Connector Selector. Now we’ll get into installing the 4×4 posts and framework, including the ledger board, beams and rim joists. Jul 8, 2024 · Subtract the width of your floor joist from your floor's length: 120" − 1. The H8 single-sided hurricane tie is designed to resist moderate loads at the top of a wall connection. DJT 14-Gauge ZMAX Galvanized Deck Joist Tie for 2x Nominal Lumber (64) Questions & Answers DJT. 23. The Strong-Tie H10A Hurricane Tie features a G90 Galvanized finish for added corrosion resistance and requires the use of hot-dip galvanized fasteners which m. e. These connectors are engineered to resist increased loads due to high-wind or seismic events, and are available for both wood and steel applications. H1 Hurricane Tie: Holds joist on both sides. Oct 21, 2009 · Jun 22, 2010. 7. You just need the joists not to move around. Hammer the prongs on the joist hanger to the rim joist. 1 Uplift resistance. This makes the hanger stronger than a toe-nail. DTT Deck Tension Tie: Horizontal application fastening railing post to deck framing. x 6-1/2 in. Typically, hurricane ties are stainless steel or galvanized steel, as both are strong and will not Step-by-Step Instructions. 8 62 ratings. Additionally, the DTT2 has been tested and evaluated in deck guardrail post applications to resist the code-specified lateral forces at the top of railing assemblies. The Strong-Drive SDWS Timber screw is designed to provide an easy-to-install, high-strength alternative to through-bolting and traditional lag screws. For new construction or to make an existing current The Strong-Drive SDWC Truss screw provides a stud-to-bottom plate or stud-to-top plate connection as well as fastening trusses and rafters to top plates. Use exterior-grade fasteners to fasten through the outside of the joist. 25 inches long by 5. 40625 ≈ 9 floor joists. The bottoms of the clip engage with the top plate via four screws, creating a very secure connection between the roof and walls. 8. After the project is complete, check and MiTek RT7A-TZ 1-1/2 in. 2. Make sure the joist is sitting square in the hanger. for composite and 5/4 decking, and up to 24”o. Space. Designed to provide a connection between trusses/rafters and the top plate of the wall to resist high-wind/seismic forces. Sep 25, 2020 · 1. It also allows the use of fewer nails, faster installation, and the use of standard nails for all connec. Collar ties (or ridge straps) prevent the ridge from separating due to uplift pressure from wind (top drawing, right). You need to get into the attic of your roof using a ladder and inspect the connections between the diagonal beams and horizontal beams. </p>. Hurricane ties are also called hurricane clips and hurricane straps. 14 gauge. Make sure to fill all of the required nail holes with the appropriate nail type. Is toe-nailing sufficient here? Simpson HTT4 12-3/8" Tension Tie. Jul 31, 2015 · Frequently bought together. The symmetrical design of the Strong-Tie H2. Simpson Strong-Tie LUS hangers are a light capacity joist hanger that utilize double shear nailing for added strength. 5A 18-Gauge Hurricane Tie 100-per box. $23. Experts believe that it is likely that many of these decks are potentially unsafe. The rim joists plus some blocking in the centre will keep the joists straight/plumb. Installing TimberLOK with the Installation Guide LUS. Here are a few specification and construction tips for SD screws: SD10 screws replace 16d common and N16 nails in face-mount hangers and straps. The DTT2 is also available with longer 2 1/2 May 21, 2010 · This L-shaped hold down bracket is then screwed to the bottom of the deck joist. Shown below is Simpson Strongtie's H1 hurricane tie, for which, in the instructions for the H1 (given below) the company cites two fasteners Feb 18, 2014 · The lateral-load connection from Simpson Strong-Tie consists of two DTT2Z Deck Tension Ties—one screwed to the deck joist, the other to the house joist. Mark a vertical line on the rim joist to give yourself a reference when installing the field joists. or 16”o. 5" joist hanger nails for the 6 holes at the top that connect to the joist and then some 10d nails to connect the bottom 4 holes to the beam. Not designed for welded or nailer applications. Align the edge of the floor joist to the top of the rim joist. This allows for fewer nails, faster installation and the use of all common nails for the same connection. To install, start by aligning the top plane of the joist with the top of the rim joist. lateral load connection to the house at four locations per deck. Jan 14, 2005 · Some decking materials installed at a 45-degree angle to the run of the joists require the joist spacing to be 12 inches on center. “Proper installation is key to ensuring the effectiveness of hurricane ties. In the case of a deck, the hurricane clip should be just fine on the inside with the following caveat. Seismic and Hurricane Ties. 11. DTT Deck Tension Ties are safe, cost-effective connectors designed to meet or exceed code requirements for deck construction. Visit the Simpson Strong-Tie Store. 5A. 162" x 2 1/2" nails into the header and 0. Some hurricane tie models are available with additional . The Strong-Drive SD Connector screw is specifically designed to replace nails in certain Simpson Strong-Tie connectors and is the only screw approved for that application. Install with 8D common nails or #9 x 1-1/2 in. Each hold-down device must “have an allowable stress capacity of not The permitted method already in the code involves constructing the Figure 507. tc ov tk ie pb at as yr cg zr