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� P:SUR:,::CG SI:IiV]CI:S UI'I'll;l� <br /> GUlUE Fuft UL'ILiLd1t:A'TION OF REQUIfiF.L F1HE FLOt: <br /> 1. An es[imate of the fire flo�� required for a given fire area may be de- <br /> termined by [he formula: <br /> F = 18 C (q)0.5 <br /> where <br /> F = the required iire flow in gpm <br /> C = coefficient related to the type ef construction <br /> C = 1.5 for vood frame construction <br /> ' = 1.0 for ordi.nary constraction <br /> 0.9 Eor hea�•y timber [ype buildin�s <br /> = 0.8 for noncombustible cor.struction / <br /> = 0.6 fer f;re-resistive construction <br /> Note : For types of construction and/or materials [hat do not fa�l wi[hin <br /> the categories given, use a coefficient reflecting the difference. <br /> Coefficients shall not be greater than 1.5 nor less than 0.6 and <br /> may be determined by interpolation. Such intexpolation sh.zll be <br /> hetween consecutive types of construction as lis[ed above. Defini- <br /> tions of �tppes of construction are included in the Anpendix. <br /> A = tha �otal floor azea (including all stor.ies, bu[ er.cluding Uasements) <br /> in the buildine being considered. For fire-resis[ive buildin�s consider the <br /> 6 largest �u:cessive floor areas if the vertical. openings are unprotectr_d; if <br /> the vertical openings are properly prot=cted, consider only the 3 largest suc- <br /> cessi�e floor areas. <br /> The firz flow as determined 'oy the above shall not exceed <br /> R,0�0 gpm for �✓ood frame construction <br /> 8,000 gpm for ordi.na_ry and hea.r� timber construction ! <br /> 6,000 grm for noncombustible cons[ruction - <br /> 6,000 gpm fcr fire-resistive construct'on <br /> except that for a norcvtl 1-s[ory buildin�; of any type of constzuction [he ':ire <br /> flok shall not exceed 5,000 gpm. <br /> The fire flow shall not be less tha�i 500 gpm� <br /> For 1-family and smal.l 2-1:amily dwellings not exceeding 2 stories i,� height see note 10. <br /> 2. The value obt:ained in No. 1 above may be reduced by up to 25X for occupancies <br /> having a low fire ha�ard or may be increased by up to 25X for occupancies ha�•ing a high <br /> � hazard. As a guidz for deteroining loa or high hazard occupancies see t:he lists <br /> i � the. Appendix. <br />