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Re: I was too picky
Hi Scott,
Per J.P.: “those special 'truss nails' Simpson makes. They are 10d, 12d, or 16d (forgot which), but are *only* 1-1/2" long.” YES, joist-hanger nails, which are only 1-1/2” in length, should be employed for those rafter clips. Also, the rafter depth to thickness ratio looks like blocking should have been installed?
IRC – 2006:
R802.8 Lateral support. Rafters and ceiling joists having a depth-to-thickness ratio exceeding 5 to 1 based on nominal dimensions shall be provided with lateral support at points of bearing to prevent rotation.
R802.8.1Bridging. Rafters and ceiling joists having a depth to thickness ratio exceeding 6 to 1 based on nominal dimensions shall be supported laterally by solid blocking, diagonal bridging (wood or metal) or a continuous 1-inch by 3-inch (25 mm by 76 mm) wood strip nailed across the rafters or ceiling joists at intervals not exceeding 8 feet (2438 mm).
I also suspect the plate notching of the rafter may exceed 1/6 of the rafter depth?
R802.7.1 Sawn lumber: Notches in solid lumber joists, rafters and beams shall not exceed one-sixth of the depth of the member, shall not be longer than one-third of the depth of the member and shall not be located in the middle one-third of the span. Notches at the ends of the member shall not exceed one-fourth the depth of the member. The tension side of members 4 inches (102 mm) or greater in nominal thickness shall not be notched except at the ends of the members. The diameter of the holes bored or cut into members shall not exceed one-third the depth of the member. Holes shall not be closer than 2 inches (51 mm) to the top or bottom of the member, or to any other hole located in the member. Where the member is also notched, the hole shall not be closer than 2 inches (51 mm) to the notch.
Exception: Notches on cantilevered portions of rafters are permitted provided the dimension of the remaining portion of the rafter is not less than 4-inch nominal (102 mm) and the length of the cantilever does not exceed 24
inches (610 mm).
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