Laserfiche WebLink
E XISTING B UILDING C ODE §5C-2-1 <br />(10) Subsection 706.2, “Addition or replacement of roofing or replacement of <br />equipment,” of the International Existing Building Code is amended to read as <br />follows: <br />“706.2 Addition or replacement of roofing or replacement of <br />equipment. Any existing gravity load-carrying structural element <br />for which an alteration causes an increase in design dead, live or snow <br />load, including snow drift effects, of more than 5 percent shall be <br />replaced or altered as needed to carry the gravity loads required by <br />the Building Code, Chapter 5A, for new structures. <br />Exceptions: <br />1. Buildings of Group R occupancy with not more than five <br />dwelling or sleeping units used solely for residential purposes <br />where the altered building complies with the conventional <br />light-frame construction methods of the Building Code, <br />Chapter 5A, or the provisions of the Residential Building <br />Code, Chapter 5B. <br />2. Buildings in which the increased dead load is due entirely to <br />the addition of a second layer of roof covering or addition of <br />2 <br />insulation, weighing 3 pounds per square foot (0.1437 kN/m) <br />or less over an existing single layer of roof covering.” <br />(11) Subsection 706.3.2, “Roof diaphragms resisting wind loads in high-wind <br />regions,” of the International Existing Building Code is amended to read as <br />follows: <br />“706.3.2 Roof diaphragms resisting wind loads in high-wind <br />regions. Where roofing materials are removed from more than 50 <br />percent of the roof diaphragm or section of a building located where <br />the basic wind speed, V, determined in accordance with Figure <br />1609.3(1) of the Building Code, Chapter 5A, is greater than 115 mph <br />(51 m/s) or in a special wind region, as defined in Section 1609 of the <br />Building Code, Chapter 5A, roof diaphragms, connections of the roof <br />diaphragm to the roof framing members, and roof-to-wall connections <br />shall be evaluated for the wind loads specified in the Building Code, <br />Chapter 5A, including wind uplift. If the diaphragms and connections <br />in their current condition are not capable of resisting 75 percent of <br />those wind loads, they shall be replaced or strengthened in accordance <br />with at least 75 percent of the loads specified in the Building Code, <br />Chapter 5A.” <br />SUPP. 11 (1-2022) <br />5C-9 <br /> <br />