Issue link: http://alpine.uberflip.com/i/586848
51 (800) 521-9790 alpineitw.com The following table lists Top Flange hangers which are suitable for installation on shearwalls with adjustments to allowable loads where appropriate. Face mount hangers are not suitable for this type of installation. Please note: 1) The shearwall must be correctly nailed to the top plates, and studs, prior to installation of the hanger. 2) The table design load is for a maximum of 5 ⁄8" inch plywood. 3) The plywood edge must bear fully on the underside of the hanger top flange. 1) Design downloads may not be increased for duration. 2) Uplift loads are @ 1.33 duration for wind or earthquake, reduce uplift loads for cantilever conditions. Uplift on some hangers may be increased with the use of alternate joist nailing. Refer to table on relevant hanger for alternate nailing uplift. 3) Uplift on RAU/RHU style hangers is for 18 inch depth maximum and must be adjusted for deeper depths. 4) All R/RI, RA/RAU, RH/RHU welded Style hangers require the use of web stiffeners for correct joist nailing. 10d commons may be used for joist nailing of welded style hangers where the width is a minimum of 3 inches. 5) Reference to 10d and 16d are for common nails. Use of 16d sinkers achieves the same allowable load as 10d commons. Please refer to the nail schedule table for correct dimensions of nails. TOP MOUNT HANGERS (SHEAR WALLS) HANGER TYPE NAIL SCHEDULE DESIGN LOAD (LBS) HEADER NAILING (1) JOIST NAILING TOP FACE DOWN 1 UPLIFT 2 TR 4-10d 2-10d 2-10d x 1 1 ⁄2" 1200 245 TR 4-16d 2-16d 2-10d x 1 1 ⁄2" 1650 245 MTR 4-16d 2-16d 2-10d x 1 1 ⁄2" 2300 245 HTR 4-16d 6-16d 2-10d x 1 1 ⁄2" 3125 245 R/RI 2-10d - - - - 2-10d x 1 1 ⁄2" 2350 - - - - RA/RAI 2-16d - - - - 2-10d x 1 1 ⁄2" 3175 - - - - RAU/RAUI 2-16d 4-16d 6-10d x 1 1 ⁄2" 3850 750 3 RH/RHI 4-16d - - - - 2-10d x 1 1 ⁄2" 4175 - - - - RHU/RHUI 4-16d 4-16d 6-10d x 1 1 ⁄2" 4500 750 3 LOAD VALUE INFORMATION Allowable load values are based on current building code criteria and governed by the following: 1. The allowable wood bearing perpendicular to the grain and/or the allowable load for fasteners. The area, in square inches, that the hanger bears on the wood is calculated, and this area is multiplied times the allowable load perpendicular to the grain for the specified species of wood (usually Douglas fir-Larch). The allowable load value for the specified fasteners (nails or bolts) is added to this value. Sometimes the allowable load value of the fasteners governs the allowable load: i.e.: face mounted hangers ("E", "H", or "S"), the allowable lateral value for the header nails may govern. Three (3) test assemblies are required to be tested with the lowest value governing. 2. Test load at which 1 ⁄8" (.125") of hanger-supported deflection was measured. This value is found by using dial indicators. This is a device, which measures movement to within .001". For comparison purposes, an average piece of typing paper is .004" thick. The dial indicators are placed on the wood member next to the metal hanger. This method more accurately measures movement in an actual application condition. 3. Test ultimate load divided by an appropriate safety factor, which is usually 3. After 1 ⁄8" deflection is reached during the load process, the dial indicators are removed to prevent them from being damaged. Loading continues until actual failure of the test assembly occurs. This is known as the "ultimate". Actual failure may be caused by wood (joist or header), metal connector or fastener failure. This supports the importance of the use of proper fasteners. The lowest test ultimate is then divided by the appropriate safety factor thus determining the allowable test load. The safety factor is generally a factor of "3" (as per ICC criteria), but this number sometimes varies. Example: Lowest load value = 3000 lbs. Safety factor = 3 Maximum allowable load = 3000 lbs. = 1000 lbs. 3 The lowest load derived from the proceeding information is the allowable normal load (100%). This load may also be the maximum load as well. The calculated load values may be increased for the duration of the load according to code. Test loads, however, may never be increased, nor may the duration of the load increase exceed any test governed load. Load Factors 1.00........... Full time duration ...................."Usual normal" 1.15........... 2 month maximum duration 1.25........... 7 day maximum duration........"Usual maximum" 1.33........... Wind/seismic loading ............."Usual uplift/strap tension" To Compute the Allowable Hanger Load for Wood I-Joists Nails into the side of the joist can be used to reduce the required bearing length only if the joist requires web stiffeners. Nails into the bottom flange of joist that do not require web stiffeners do not decrease the required bearing length. The 100% load capacity for a hanger is the lesser of the 100% hanger load capacity or the allowable joist-bearing value in the hanger. Product Application Assurance 1. An essential component for assessing hanger compatibility is the compatibility calculations (the difference between solid sawn lumber and wood I-joists). This incompatibility will have a lower capacity for most typical bearing conditions. 2. Considerable concern is the basic issue of compatibility. The nail size and location dramatically affect the combined performance of the wood I-joists and hangers. 3. Suitability of the supporting member is not limited to large solid-sawn or glulam beams - other support members can be (A.) wood I-joists, (B.) laminated veneer lumber or (C.) 2x - solid sawn member. RAUI 412 Shown On Shearwall