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Important Information and General Notes | Canada

General Notes for the Designer

  1. Simpson Strong-Tie reserves the right to change specifications, designs, and models without notice or liability for such changes. You should review our website each time you use a Simpson Strong-Tie product.
  2. The term "Designer" used throughout this catalogue is intended to mean a qualified licensed professional engineer or a qualified licensed architect. You should consult a qualified Designer familiar with all applicable building codes each time you use a Simpson Strong-Tie product.
  3. 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 for limit states loads be limited to 0.30" or 7.6mm at each level or between restraints.
  4. 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.
  5. The Designer is responsible for verifying that all design loads do not exceed the catalogue resistance listed for each component in the restraint system.
  6. Unless otherwise noted, dimensions are in inches, loads are in pounds.
  7. 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 1⁄2 inch per floor (storey).
  8. 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.
  1. 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.
  2. Components should be kept in a dry environment to limit exposure to moisture and corrosion. Read and follow the corrosion information on our website at www.strongtie.com/corrosion.
  3. 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.
  4. 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.
  5. 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.
  6. 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.”
  7. 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.
  8. 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. (“Simpson Strong-Tie”) 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.

  1. All specified products must be installed according to the instructions in this catalogue and on our website. Incorrect quantity, size, placement, or type may cause the product to fail.
  2. Use the materials specified in the installation instructions. Substitution of or failure to use specified materials may cause the connection to fail.
  3. Do not add fastener holes or otherwise modify Simpson Strong-Tie products. The performance of modified products may be substantially weakened. Simpson Strong-Tie provides no warranty for any products that have been modified, improperly installed or not used in accordance with the information set forth in this catalogue or on our website.
  4. Install products in the position specified in the catalogue and on our website.
  5. Do not alter installation procedures from those set forth in this catalogue and on our website.
  6. Some components may have premature failure if exposed to moisture. These components are recommended to be used in dry interior applications. Read and follow the corrosion information in this catalogue and on our website.
  1. Use proper safety equipment.
  2. 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.
  3. The installer may cut Strong-Rod threaded rod or other threaded rod to length as required.
  4. Shearwall sheathing shall not have vertical joints at any of the specified compression members except at the shearwall perimeter.
  5. See the relevant pages of the catalogue for shearwall edge nailing details.
  6. When installing hex nuts on the Strong-Rod™ threaded rod, make the nut snug on the bearing plate and tighten an additional 1/2 turn.

Limited Warranty

For the Limited Warranty applicable to catalog products, see www.strongtie.com/information/limited-warranties.

Terms and Conditions of Sale

Product Use

Products on this website are designed and manufactured for the specific purposes shown and should not be used with other connectors not approved by a qualified Designer. You should review our website and consult a qualified Designer familiar with all applicable building codes each time you use a Simpson Strong-Tie product.

Consult www.strongtie.com for disclaimers, warnings, General Notes, General Instructions for the Installer, General Instructions for the Designer, Building Codes, Corrosion Information and other important information. F.O.B. Shipping Point unless otherwise specified.

Non-Catalogue And Modified Products

Modifications to products or changes in installation procedures should only be made by a licensed/certified building design professional, a licensed professional engineer or licensed architect (“Designer”). The performance of such modified products or altered installation procedures is the sole responsibility of the Designer. Any person modifying Simpson Strong-Tie products must provide the installer with specific instructions on the modified products' specifications, installation and use.

Consult Simpson Strong-Tie for applications for which there is no catalog product, or for connectors for use in hostile environments, with excessive wood shrinkage, or with abnormal loading or erection requirements.

Non-catalog products must be designed by a qualified Designer and will be fabricated by Simpson Strong-Tie in accordance with customer specifications.

Any modified, special order or non-catalog products, or any products that are not installed strictly in accordance with Simpson Strong-Tie’s installation procedures, are provided “AS IS” and without any representation or warranty of any kind.


Any Designer or other person who modifies any products, changes any installation procedures or designs any non-catalog products for fabrication by Simpson Strong-Tie shall, regardless of specific instructions to the user, indemnify, defend, and hold harmless Simpson Strong-Tie for any and all claimed loss or damage occasioned in whole or in part by such products.