Simpson Strong-Tie Company Inc. structural connectors, anchors, and other products are designed and tested to provide specified design loads. To obtain optimal performance from Simpson Strong-Tie products and achieve maximal allowable design load, the products must be properly installed and used in accordance with the corrosion information, installation instructions and design limits provided by Simpson Strong-Tie. To ensure proper installation and use, designers and installers must carefully read the following General Notes, General Instructions for the Installer, General Instructions for the Designer and Corrosion Information, as well as consult the applicable catalog pages for specific product installation instructions and notes.
Proper product installation requires careful attention to all notes and instructions, including these basic rules:
Failure to follow fully all of the notes and instructions provided by Simpson Strong-Tie may result in improper installation of products. Improperly installed products may not perform to the specifications set forth in this catalog and may reduce a structure’s ability to resist the movement, stress, and loading that occurs from gravity loads as well as impact events such as earthquakes and high-velocity winds.
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 catalog or on our website.
In addition to following the basic rules provided above as well as all notes, warnings and instructions provided in the catalog, installers, designers, engineers and consumers must consult the Simpson Strong-Tie website at strongtie.com each time a product is used to obtain additional design and installation information.
For the Limited Warranty that applies to Simpson Strong-Tie products, please consult strongtie.com/limited-warranties. To obtain a copy of the current Limited Warranty, contact us at limited_warranty@strongtie.com, (800) 999-5099 or Simpson Strong-Tie Company Inc., 5956 West Las Positas Boulevard, Pleasanton, CA 94588.
The Limited Warranty contains important disclaimers, limitations and exclusions, and applies only if the products have been properly specified, installed, maintained, and used in accordance with the design limits and the structural, technical, and environmental specifications in the Simpson Strong-Tie Documentation. All future purchases of Simpson Strong-Tie products are subject to the terms of the Limited Warranty in effect as of the purchase date.
Although products are designed for a wide variety of uses, Simpson Strong-Tie assumes no liability for confirming that any product is appropriate for an intended use, and each intended use of a product must be reviewed and approved by qualified professionals. Each product is designed for the load capacities and uses listed in the Simpson Strong-Tie Documentation, subject to the limitations and other information set forth therein. Due to the particular characteristics of potential impact events such as earthquakes and high velocity winds, the specific design and location of the structure, the building materials used, the quality of construction, or the condition of the soils or substrates 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's specifications and the products are properly installed in accordance with applicable building codes, laws, rules and regulations.
Products in this catalog are designed and manufactured for the specific purposes shown, and should not be used with other connectors not approved by a qualified licensed/certified building design professional, a licensed professional engineer or licensed architect (“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.
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 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 such products.
Modifications to products or changes in installation procedures should only be made by a qualified professional 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 Company Inc. 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 installation procedures, are provided "AS IS" and without any representation or warranty of any kind.
These general notes are provided to ensure proper installation of Simpson Strong-Tie products and must be followed fully.
Species | Fc | | Specific Gravity |
---|---|---|
Douglas Fir–Larch (DF) | 625 psi | 0.50 |
Southern Pine (SP) | 565 psi | 0.55 |
Spruce-Pine-Fir (SPF) | 425 psi | 0.42 |
Spruce-Pine-Fir South (SPF-S) | 335 psi | 0.36 |
Hem Fir (HF) | 405 psi | 0.43 |
Glulam | 650 psi | 0.50 |
LVL (DF/SP) | 750 psi | 0.50 |
LSL (E=1.3x106) | 680 psi | 0.50 |
LSL (E>1.5x106) | 880 psi | 0.50 |
Parallam® PSL | 625 psi | 0.50 |
Western Cedar | 425 psi | 0.36 |
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.
Top flange configuration and thickness of top flange need to be considered for flush frame conditions.
If the hanger is over-spread, it can raise the I-joist above the header and may cause uneven surfaces and squeaky floors. The ITS and IUS with up to 1/4" overspread (both sides combined) will not result in reduced download. It will reduce allowable uplift load.
A hanger “kicked-out” from the header can cause uneven surfaces and squeaky floors.
Hangers provide some joist rotation resistance; however, additional lateral restraint may be required for deep joists.
Lack of web stiffeners combined with short hanger allows unwanted rotation.
Hanger height should be at least 60% of the joist height.
If hanger height is less than 60% of the joist height, add clips or blocking near the top.
Sides of hanger laterally support the top flange of the I-joist.
No web stiffeners required.
The loading may cause cross-grain bending. As a general rule, the maximum allowable overhang is 1/4", depending on nailer thickness.
Nailer should be full width.
Or the wrong hanger for the application.
Toe nailing causes squeaks and improper hanger installations. Do not toe nail I-joists before installing top-flange or facemount hangers.
For sloped joists up to 1/4:12, there is no reduction. For slopes greater than 1/4:12, see individual product pages or refer to technical bulletin T-C-SLOPEJST.
Multiple joists should be adequately connected together to act as one unit.
Use the correct nails. Wood may split if the nails are too large. Hanger nails into flanges should not exceed 0.148" x 1 1/2". Nails into web stiffeners should not exceed 0.162" diameter.
Supporting a top-flange hanger may require bottom flange restraining straps, blocking or directly-applied ceiling systems to prevent rotation at the hanger location.
Joists may be skewed up to 2 1/2° in a non-skewed hanger without any load reduction. Refer to individual hanger descriptions for information allowing any further skew applications.
Notching of joists/rafters (or kerf cutting) to accommodate sloped conditions in standard (nonsloped) hangers is not recommended and can lead to premature splitting.
When face-mount hangers are attached to I-joist headers, backer blocks must be installed to provide a nailing surface for the hanger nails. The backer blocks should be installed on both sides of the web and attached together with a minimum of (10) 0.148" x 3" nails. The hanger nails should extend through the web. Contact the I-Joist manufacturer for additional design considerations.
When top-flange hangers are attached to I-joist headers, a backer block must be installed to prevent the top flange from rotating under load. The backer blocks should be installed with a minimum of (10) 0.148" x 3" nails clinched. Check with the joist manufacturer for additional design considerations.
These general instructions for the designer 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 design and installation instructions and notes provided for each particular product, all of which should be consulted prior to and during the design process.
"PERMANENT" — 90% of the design load.
"FLOOR" and "DOWN" (100) — no increase for duration of load.
"SNOW" (115) — 115% of design load for two month duration of load.
"ROOF LOAD" (125) — 125% of design load for seven day duration of load.
"EARTHQUAKE / WIND/ UPLIFT" (160) — 160% of design load for earthquake/wind loading.