These notes are provided to ensure proper installation of Simpson Strong-Tie® products and must be followed fully.
- Simpson Strong-Tie Company Inc. reserves the right to change specifications, designs and models without notice or liability for such changes.
- Steel used for each Simpson Strong-Tie product is individually selected based on the product's steel specifications, including strength, thickness, formability, finish, and weldability. Contact Simpson Strong-Tie for steel information on specific products.
- Unless otherwise noted, dimensions are in inches, loads are in pounds.
- Unless otherwise noted, welds, bolts, screws and nails may not be combined to achieve highest load value.
- Unless otherwise noted, catalog loads are based on cold-formed steel members having a minimum yield strength, Fy, of 33 ksi and tensile strength, Fu, of 45 ksi for 43 mils (18 ga) and thinner, and a minimum yield strength, Fy, of 50 ksi and tensile strength, Fu, of 65 ksi for 54 mils (16 ga) and thicker.
- Simpson Strong-Tie Company Inc. will manufacture non-catalog products provided prior approval is obtained and an engineering drawing is included with the order. Steel specified on the drawings as 1/8", 3/16", and 1/4" will be 11 gauge (0.120"), 7 gauge (0.179"), and 3 gauge (0.239"), respectively. The minimum yield and tensile strengths are 33 ksi and 52 ksi, respectively.
- SSTB is ASTM A36, RFB is ASTM A307.
- Unless otherwise noted, bending steel in the field may cause fractures at the bend line. Fractured steel will not carry load and must be replaced.
- Top flange hangers may cause unevenness. Possible remedies should be evaluated by a professional and include using a face mount hanger or cutting the subfloor to accommodate the top flange thickness.
- Built-up members (multiple members) must be fastened together to act as one unit to resist the applied load (excluding the connector fasteners). This must be determined by the Designer/Engineer of Record.
- Do not Overload. Do not exceed catalog allowable loads, which would jeopardize the connection.
- Some model configurations may differ from those shown in this website. Contact Simpson Strong-Tie for details.
- Some combinations of hanger options are not available. In some cases, combinations of these options may not be installable. Horizontal loads induced by sloped joists must be resisted by other members in the structural system. A qualified designer must always evaluate each connection, including carried and carrying member limitations, before specifying the product. Fill all fastener holes with fastener types specified in the tables, unless otherwise noted. Hanger configurations, height and fastener schedules may vary from the tables depending on joist size, skew and slope. See the allowable table load for the non-modified hanger, and adjust as indicated. Material thickness may vary from that specified depending on the manufacturing process used. W hangers normally have single stirrups; occasionally, the seat may be welded. S/B, S/LBV, W and WP hangers for sloped seat installations are assumed backed.
- Simpson Strong-Tie will calculate the net height for a sloped seat. The customer must provide the H1 joist height before slope.
- Do not weld products listed in this catalog 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. Some steels have poor weldability and a tendency to crack when welded. Cracked steel
will not carry load and must be replaced.
- Steel for the framing members must comply with ASTM A1003 Grade 33 minimum.
- Quik Drive® screws have been tested per AISI Standard Test Method S904.
- Consideration should be given to the screw head specified as this may affect the attached materials.
- Do not add fastener holes or otherwise modify Simpson Strong-Tie products. The performance of modified products may be substantially weakened. Simpson Strong-Tie will not warrant or guarantee the performance of such modified products.
- All references to bolts or machine bolts (MBs) are for structural quality through bolts (not lag screws or carriage bolts) equal to or better than ASTM Standard A307, Grade A.