For interior usage where washers are used on untreated wood, corrosion resistant hardware is generally not required. If the hardware is in contact with preservative treated wood, corrosion resistant hardware may be required. Consult with the supplier of treated wood to determine if they recommend corrosion resistant hardware with their product.
Direct summation is not allowed. It is permissible to take twice the value of the weaker material. The exception to this is for shear walls sheathed on one side with wood structural panels and gypsum on the opposite side when used to resist wind loads per SDPWS 4.3.3.3.2.
We do not provide information on power driven fasteners, but you can consult ICC-ES (http://www.icc-es.org/) for ESR 1539 (Power-Driven Staples and Nails), or the International Staple, Nail, and Tool Association (http://www.isanta.org/) for further information.
Yes, but all proprietary products must be designed and installed per the manufacturer’s specifications.
A splice is a means of connecting discontinuous top plate members to transfer the design tension force. For the design assumptions in the WFCM, all top plate joints must be spliced in order to maintain diaphragm chord tension capacity. See WFCM Table 3.21 for top plate splice requirements.
The following design standards for wood construction in high wind areas are presently referenced in model building codes such as the IBC (International Building Code) and IRC (International Residential Code): 1. AWC Wood Frame Construction Manual (WFCM) 2015 Edition 2. ICC Standard for Residential Construction in High Wind Regions (ICC-600) The WFCM is an ANSI approved document that provides engineered and prescriptive…
AWC’s Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings prescriptively limits cantilevers based on the following conditions, where L is the length of the simple span, center to center of bearing and d is the depth of the joist: Loadbearing wall, shear wall or non-shear wall <= d Non-loadbearing, shear wall or non-shear wall <=…
AWC’s Special Design Provisions for Wind and Seismic, Table 4.2D contains shear capacities for lumber sheathing attached straight and diagonally. Table 4.3D contains shear wall capacities for straight and diagonal lumber sheathing as well. AWC also publishes Plank and Beam Framing for Residential Buildings (WCD-4) (T14). It shows how this floor and roof framing system, traditionally used in…
Table 3.17D in the Wood Frame Construction Manual provides maximum shear wall segment aspect ratios for various wood and gypsum assemblies. Also see Special Design Provisions for Wind and Seismic Table 4.3.4. Typically, 3.5:1 is the maximum aspect ratio for design of blocked wood structural panel shear walls. For an 8′ tall shear wall, that would mean 27-1/2″ of…
AWC Wood Frame Construction Manual (WFCM) 2015 Edition is presently referenced in model building codes such as the IBC (International Building Code) and IRC (International Residential Code). The WFCM is an ANSI-approved document that provides engineered and prescriptive requirements for wood frame construction based on dead, live, snow, seismic, and wind loads from ASCE 7-10 Minimum Design Loads for Buildings and Other Structures. AWC Special…