General Notes for the Designer
- Simpson Strong-Tie reserves the right to change specifications, designs, and models without notice or liability for such changes.
- The term “Designer” used throughout this catalogue is intended to mean a qualified licensed professional engineer or a qualified licensed architect.
- When designing for shearwall overturning restraint, the Designer is responsible for verifying that the building drift is within the acceptable code limitations. Based on U.S. Building Code requirements, Simpson Strong-Tie suggests that rod elongation and shrinkage compensating device deflection be limited to 0.30" or 7.6 mm at each level or between restraints.
- Steel used for each Simpson Strong-Tie® product is individually selected based on the product’s steel specifications, including strength, thickness, formability, finish and ability to weld. Contact factory for steel information on specific products.
- The Designer is responsible for verifying that all design loads do not exceed the catalogue resistance listed for each component in the restraint system.
- Unless otherwise noted, dimensions are in inches, loads are in pounds.
- Wood shrinks and expands as it loses and gains moisture content, particularly perpendicular to its grain. Take wood shrinkage into account when designing and installing connections. The effects of wood shrinkage are increased in multiple lumber connections, such as floor-to-floor installations. This may result in the nuts for the vertical rod system becoming loose, requiring tightening (unless shrinkage compensating devices are installed). Refer to the wood shrinkage web application on www.strongtie.com/software for more information. See ICC-ES ESR-2320 for additional information on Simpson Strong-Tie take-up devices. Clause A.5.4.6 of CSA O86-14, Chapter 5 of Mid-Rise Wood-Frame Construction Handbook Special Publication SP-57E, and Clause 5.3 of Technical and Practice Document by APEGBC. Pre-engineered runs assume a maximum shrinkage of ½ inch per floor (storey).
- All connected members, studs, posts, blocking details, and related elements shall be designed by the Designer. Where multiple members of lumber are intended to act as one unit, they must be fastened together to resist the applied load.
- Local and/or regional building codes may require meeting special conditions, such as rod elongation limits or special inspection of anchors installed in concrete and masonry. For compliance with these requirements, it is necessary to contact the local and/or regional building authority.
- Components should be kept in a dry environment to limit exposure to moisture and corrosion. Corrosion information may be found at www.strongtie.com/corrosion.
- Anchorage solutions shall be specified by the Designer. Foundation size and reinforcement shall be specified by the Designer. Contact Simpson Strong-Tie to coordinate connecting components at the first level.
- The Simpson Strong-Tie® Strong-Rod™ Anchor Tiedown System for shearwall overturning restraint (Strong-Rod ATS) is designed to be installed floor-by-floor as the structure is built. Installation in this manner, with shearwalls, will provide lateral stability during construction.
- Do not specify welding of products listed in this catalogue unless this publication specifically identifies a product as acceptable for welding, or unless specific approval for welding is provided in writing by Simpson Strong-Tie. Cracked steel due to unapproved welding must be replaced.
- Simpson Strong-Tie strongly recommends the following addition to construction drawings and specifications: “Simpson Strong-Tie® connectors and tiedown components are specifically designed to meet the structural loads specified on the plans or provided by the Designer. Before substituting an alternate rod system, confirm that load capacity and system displacement (rod elongation and shrinkage compensation device displacement) are based on reliable published testing data and/or calculations. The Designer should evaluate and give written approval for substitution prior to installation.”
- Steel bearing plates shall be sized for proper length, width and thickness based on steel bending capacity and wood bearing. Deflection of bearing compression (up to 0.04" or 1 mm) must be included in overall shearwall deflection calculations.
- Available Strong-Rods, fully threaded rod sizes and material grades are listed at www.strongtie.com/srs.
General Instructions for the Installer
These general instructions for the installer are provided to ensure proper selection and installation of Simpson Strong‑Tie Company Inc. products and must be followed carefully. These general instructions are in addition to the specific installation instructions and notes provided for each particular product, all of which should be consulted prior to and during installation of Simpson Strong‑Tie Company Inc. products.
- All specified products must be installed according to the instructions in this catalogue. Incorrect quantity, size, placement, or type may cause the product to fail.
- Use the materials specified in the installation instructions. Substitution of or failure to use specified materials may cause the connection to fail.
- Do not add fastener holes or otherwise modify Simpson Strong‑Tie Company Inc. products. The performance of modified products may be substantially weakened. Simpson Strong‑Tie will not warrant or guarantee the performance of such modified products.
- Install products in the position specified in the catalogue.
- Do not alter installation procedures from those set forth in this catalogue.
- Some hardened fasteners may have premature failure if exposed to moisture. These fasteners are recommended to be used in dry interior applications.
- Use proper safety equipment.
- Welding galvanized steel may produce harmful fumes; follow proper welding procedures and safety precautions. Welding should be in accordance with CSA W59 and the Canadian Welding Bureau standards. Unless otherwise noted, Simpson Strong‑Tie connectors cannot be welded.
- The installer may cut Strong-Rod™ threaded rod or other threaded rod to length as required.
- Shearwall sheathing shall not have vertical joints at any of the specified compression members except at the shearwall perimeter.
- See pages 33 and 35 of the catalogue for shearwall edge nailing details.
- When installing hex nuts or Isolator Nuts on the Strong-Rod™ threaded rod, make the nut snug on the bearing plate and tighten an additional 1/2 turn.
Simpson Strong-Tie Company Inc. warrants catalogue products to be free from defects in material or manufacturing. Simpson Strong-Tie Company Inc. products are further warranted for adequacy of design when used in accordance with design limits in this catalogue and when properly specified, installed and maintained. This warranty does not apply to uses not in compliance with specific applications and installations set forth in this catalogue, or to non-catalogue or modified products, or to deterioration due to environmental conditions.
Simpson Strong-Tie® connectors are designed to enable structures to resist the movement, stress and loading that results from impact events such as earthquakes and high-velocity winds. Other Simpson Strong-Tie products are designed to the load capacities and uses listed in this catalogue. Properly-installed Simpson Strong-Tie products will perform in accordance with the specifications set forth in the applicable Simpson Strong-Tie catalogue. Additional performance limitations for specific products may be listed on the applicable catalogue pages.
Due to the particular characteristics of potential impact events, the specific design and location of the structure, the building materials
used, the quality of construction, and the condition of the soils involved, damage may nonetheless result to a structure and its contents even if the loads resulting from the impact event do not exceed Simpson Strong-Tie catalogue specifications and Simpson Strong-Tie connectors are properly installed in accordance with applicable building codes.
All warranty obligations of Simpson Strong-Tie Company Inc. shall be limited, at the discretion of Simpson Strong-Tie Company Inc., to repair or replacement of the defective part. These remedies shall constitute Simpson Strong-Tie Company Inc.’s sole obligation and sole remedy of purchaser under this warranty. In no event will Simpson Strong-Tie Company Inc. be responsible for incidental, consequential, or special loss or damage, however caused.
This warranty is expressly in lieu of all other warranties, expressed or implied, including warranties of merchantability or fitness for a particular purpose, all such other warranties being hereby expressly excluded. This warranty may change periodically – consult our warranty for current information.
Terms and Conditions of Sale
Products in this catalogue are designed and manufactured for the specific purposes shown, and should not be used with other connectors not approved by a qualified Designer. Modifications to products or changes in installations should only be made by a qualified Designer. The performance of such modified products or altered installations is the sole responsibility of the Designer.
Customers or Designers modifying products or installations, or designing non-catalogue products for fabrication by Simpson Strong-Tie Company Inc. shall, regardless of specific instructions to the user, indemnify, defend and hold harmless Simpson Strong-Tie Company Inc. for any and all claimed loss or damage occasioned in whole or in part by non-catalogue or modified products.
Non-Catalogue And Modified Products
Consult Simpson Strong-Tie Company Inc. for applications for which there is no catalogue product, or for connectors for use in hostile environments, with excessive wood shrinkage, or with abnormal loading or erection requirements. Non-catalogue products must be designed by the customer and will be fabricated by Simpson Strong-Tie in accordance with customer specifications. Simpson Strong-Tie cannot and does not make any representations regarding the suitability of use or load-carrying capacities of non-catalogue products. Simpson Strong-Tie provides no warranty, express or implied, on non-catalogue products. F.O.B. Shipping Point unless otherwise specified.