Orange County NC Website
Browse       Search
31 <br /> PLANNING & INSPECTIONS DEPARTMENT <br /> Craig N. Benedict, AICP, Director <br /> Engineering / Erosion <br /> 131 W. Margaret Lane <br /> Control / Stormwater �. <br /> (919) 245-2575 Suite 201 <br /> T P. O. Box 8181 <br /> (919) 644-3002 (FAX) i `ll ilf i :' trti�i i ,p. Hillsborough, NC 27278 <br /> www.orangecountync.gov g <br /> MEMORANDUM <br /> TO: Michael Harvey <br /> COPY TO: Patrick Mallett, Jason Shepherd, Craig Benedict & Kevin Lindley, PE <br /> FROM: Howard W. Fleming, Jr., PE, Engineering/Stormwater Supervisor <br /> DATE: 08/18/15 <br /> PROJECT: Harts Mill: Major Subdivision <br /> SUBJECT: Rezoning to Major Planning Development (MPD-CZ) <br /> DAC-Review, 05/07/15 <br /> Proposed On-Site Water System / Adequacy for Fire Protection <br /> ENGINEERING COMMENTS: <br /> Stormwater review was covered in a separate memorandum dated 05/12/15. <br /> Engineering has reviewed the subject project for adequacy of the fire protection <br /> infrastructure and spoken with the Orange County Fire Marshal, Jason Shepherd. It is our <br /> understanding from plans submitted, dated 05/13/15, that the project proposes a 6" on-site <br /> private water line, supplying three (3) on-site fire hydrants. This water system must comply <br /> with the NC State Fire Code, adopted and published jointly by The North Carolina Building <br /> Code Council and The North Carolina Department of Insurance. In that code it references <br /> compliance with National Fire Protection Association (NFPA) Standard 24 for the design of <br /> on-site fire protection systems. <br /> From http://www.nfr)a.orci/about-nfpa: Founded in 1896, NFPA is a global, nonprofit <br /> organization devoted to eliminating death, injury, property and economic loss due to fire, <br /> electrical and related hazards. The association delivers information and knowledge through <br /> more than 300 consensus codes and standards, research, training, education, outreach and <br /> advocacy; and by partnering with others who share an interest in furthering the NFPA <br /> mission. <br /> NFPA 24 does not currently require a line size greater than 6" for private service mains <br /> supplying private fire hydrants. There is a proposed pending revision (First Revision No. <br /> 15-NFPA 24-2013 [Chapter 5]) that would modify paragraph 5.2.1 to read as follows: <br /> Hydraulic calculations shall show that the main is able to supply the total demand at the <br /> appropriate pressure for systems with multiple fire hydrants. Orange County Engineering <br /> concurs with this pending revision and looks forward to its adoption. It is the general <br /> recommendation of the Orange County Engineering staff that on-site private service <br /> mains supplying multiple fire hydrants be no less than 8" in diameter, unless <br /> engineering calculations can demonstrate otherwise. Such an engineering standard is <br /> not yet part of the Orange County Unified Development Ordinance. <br /> S:Al2_Engineering\Engineering Review\Harts Mill Minor Sub\HWF-0C-En_g DAC-Memo(Harts Mill)08-18-15.doe <br />