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// CODE SNIPPET

[BS] 706.3.2 Roof Diaphragms Resisting Wind Loads in High-Wind Regions

Existing Building Code 2018 of Illinois > 7 Alterations—Level 1 > 706 Structural > 706.3 Additional Requirements for Reroof Permits > 706.3.2 Roof Diaphragms Resisting Wind Loads in High-Wind Regions
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Where roofing materials are removed from more than 50 percent of the roof diaphragm or section of a building located where the ultimate design wind speed, Vult, determined in accordance with Figure 1609.3(1) of the International Building Code, is greater than 115 mph (51 m/s) or in a special wind region, as defined in Section 1609 of the International Building Code, roof diaphragms, connections of the roof diaphragm to roof framing members, and roof-to-wall connections shall be evaluated for the wind loads specified in the International Building Code, including wind uplift. If the diaphragms and connections in their current condition are not capable of resisting 75 percent of those wind loads, they shall be replaced or strengthened in accordance with the loads specified in the International Building Code.

Related Code Sections


706.3.2 Alterations—Level 1, Roof Diaphragms Resisting Wind Loads in High-Wind Regions
diaphragms, connections of the roof diaphragm to roof framing members, and roof-to-wall connections shall be evaluated for the wind loads specified ...
Existing Building Code 2021 of Illinois > 7 Alterations—Level 1 > 706 Structural > 706.3 Additional Requirements for Reroof Permits > 706.3.2 Roof Diaphragms Resisting Wind Loads in High-Wind Regions
706.3.2 Alterations—Level 1, Roof Diaphragms Resisting Wind Loads in High-Wind Regions
wind region, as defined in Section 1609 of the International Building Code , roof diaphragms, connections of the roof diaphragm to roof framing members ...
Existing Building Code 2018 of Illinois > 7 Alterations—Level 1 > 706 Structural > 706.3 Additional Requirements for Reroof Permits > 706.3.2 Roof Diaphragms Resisting Wind Loads in High-Wind Regions
503.12 Prescriptive Compliance Method, Roof Diaphragms Resisting Wind Loads in High-Wind Regions
shall be evaluated for the wind loads specified in Section 1609 of the International Building Code , including wind uplift. If the diaphragms ...
Existing Building Code 2021 of Illinois > 5 Prescriptive Compliance Method > 503 Alterations > 503.12 Roof Diaphragms Resisting Wind Loads in High-Wind Regions
503.12 Prescriptive Compliance Method, Roof Diaphragms Resisting Wind Loads in High-Wind Regions
diaphragms, connections of the roof diaphragm to roof framing members, and roof-to-wall connections shall be evaluated for the wind loads specified ...
Existing Building Code 2018 of Illinois > 5 Prescriptive Compliance Method > 503 Alterations > 503.12 Roof Diaphragms Resisting Wind Loads in High-Wind Regions
Section 1609 Structural Design, Wind Loads
shingles installed over a roof deck complying with Section 1609.5.1 shall comply with the wind-resistance requirements of Section 1504.1.1 ...
Building Code 2018 of Illinois > 16 Structural Design > 1609 Wind Loads
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