Proper Placement of (4) H2.5A’s to Avoid Fastener Interference Allowable Load Comparison for Single and Multiple H2.5A Connectors Figure 4. Check out the recently updated F-C-HWRCAG16 High Wind-Resistant Construction Application Guide for allowable loads using multiple connectors and for guidance on the proper placement of connectors so as to avoid potential overlap or fastener interference. What if the tabulated loads in the catalog for a single connector just aren’t enough? Use multiple connectors! An important note on using multiple connectors, though: Using four hurricane ties doesn’t always mean you’ll get 4x the load. Alternate seismic and hurricane tie applications. Traditional Linear Interaction Equation Figure 2. I won’t go into too much detail on this topic since it was covered in a recent blog post, but in lieu of the traditional unity equation shown in Figure 1, certain Simpson Strong-Tie connectors (hurricane ties included) are permitted to use the alternative approach outlined in Figure 2. When the connector is resisting lateral loads, its capacity to resist uplift is reduced. It’s also important to consider combined loading if you plan to use the tie to resist both uplift and lateral loads. at each end, don’t select a hurricane tie with a published capacity of less than 600 lb. If your building’s roof trusses have an uplift of 600 lb. In this post, we’ll outline some of the key elements to consider when selecting a hurricane tie for your project. This assortment of models raises the question, “How do you select the right one?” Simpson Strong-Tie manufactures approximately 20 different models of hurricane ties, not counting twist straps, other clips, or the new fully-threaded SDWC screws often used in the same applications. They are most commonly used to resist uplift forces, but depending on regional design and construction practices, hurricane ties may also resist lateral loads that act in- or out-of-plane in relation to the wall. They play a critical role in a structure’s continuous load path and may be used in a variety of applications, like attaching roof framing members to the supporting wall top plate(s), or tying wall top or bottom plates to the studs. HS24 requires slant nailing only when bottom chord of truss or rafter has no slope.When it comes to wood-frame construction, hurricane ties are among the most commonly specified connectors. Slots allow maximum field bending up to a pitch of 6:12, use H10A sloped loads for field-bent installation. H10A optional nailing to connect shear blocking, use 0.131" x 2 1/2" nails. This can force the truss plate off of the truss and compromise truss performance. When installing ties on plated trusses (on the side opposite the truss plate) do not fasten through the truss plate from behind. Hurricane ties do not replace solid blocking. H2.5T, H 3 and H6 ties are shipped in equal quantities of right and left versions (right versions shown). Hurricane ties can be installed with flanges facing inward or outward. Use all specified fasteners see General Notes. Selected products available in stainless steel or ZMAX® coating. Double-shear nailing allows for higher lateral resistance. HS24 - the HS24 attaches the bottom chord of a truss or rafter at pitches from 0/12 to 4/12 to double 2x4 top plates. HGA10 - the HGA10 attaches to gable trusses and provides good lateral wind resistance. Minimum heel height for H16 series is 4". The strap length provides for various truss height up to a maximum of 13 1/2" (H16 series). The presloped seat of the H16 provides for a tight fit and reduced deflection. H16 - the H16 series has a presloped seat of 5/12 for double trusses. The hurricane tie series features various configurations of wind and seismic ties for trusses and rafters.
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