If I have a dry-pipe sprinkler system under a pitched roof exceeding a slope of 16.7%, do I apply both area increases from Section 5-2.3.2.5 and Section 5-2.3.2.6?
Yes, both sections would be applied cumulatively to the design area chosen from Figure 5-2.3. This is shown in the following example: The application area determined from Figure 5-2.3 is 1500 square feet. As required by Section 5-2.3.2.5, 1500 square feet is increased by 30% to 1950 square feet for the steeply pitched roof. As required by Section 5-2.3.2.6, the 1950 square feet is increased by 30% for the dry pipe system. Therefore, the original density chosen from Figure 5-2.3 must be applied over 2535 square feet. Ensure that there are no other design area modifications required for the system being installed.
Related Questions
- If I have a dry-pipe sprinkler system under a pitched roof exceeding a slope of 16.7%, do I apply both area increases from Section 5-2.3.2.5 and Section 5-2.3.2.6?
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