Simpson THAC418 4x18 Adjustable Truss Hanger - G90 Galvanized
Simpson THAC418 4x18 Adjustable Truss Hanger - G90 Galvanized!
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THA/THAC/THAR/L Adjustable Truss Hangers
Specifications
Simpson Strong-Tie THAC adjustable truss hangers' extra long straps allow full code nailing and can be field-formed to give top flange hanger convenience. The concealed flanges on this hanger have the face flanges turned in for a clean finished look when installed. Straps must be bent for top flange hanger installation. PAN nailing helps eliminate splitting of 4x2 truss bottom chords. The Strong-Tie THAC418 concealed flange truss hanger features a G90 Galvanized coating and requires the use of hot-dip galvanized fasteners which meet the specifications of ASTM A153.
Installation:
Use all specified fasteners.
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For the THA29, nails used for joist attachment must be driven at an angle so that they penetrate through the corner of the joist and into the header. For all other top flange installations, straighten the double shear nailing tabs and install the nails straight into the joist.
Top Flange Installation—The straps must be field formed over the header - see table for minimum top flange requirements. Install top and face nails according to the table. Top nails shall not be within 1/4" from the edge of the top flange members.
Face Mount Installation—Install all face nails according to the table. Not all nail holes will be filled on all models. On models where there are more nail holes than required, the lowest 4 face holes must be filled. Nails used for the joist attachment must be driven at an angle so that they penetrate through the corner of the joist into the header.
Alternate Installation—The THA 4x hangers may be installed in a top flange configuration using the tabulated fasteners for face mount installation and achieve the face mount installation loads. Install the tabulated face nails into the face and top of the carrying member. Nails used for the joist attachment must be driven at an angle so that they penetrate through the corner of the joist into the header.
Uplift—Lowest face nails must be filled to achieve uplift loads.
NOTE: The correct fasteners installed in the correct position must be used to achieve published load values
California Residents: WARNING
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THA/THAC/THAR/L Adjustable Truss Hangers
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