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TABLE 1014.2.1 <br />HYDROMECHANICAL GREASE INTERCEPTOR (HGI) <br />SIZING CHARTS <br />i-A70CLoM1eC1-1 1"-r12QEtaF aC�— <br />! DRAINAGE FIXTURE UNITS <br />it (DFUs) <br />HGI FLOW <br />(gpm) <br />8 <br />20 <br />10 <br />25 <br />13 <br />20 <br />35 <br />50 <br />35 <br />172 <br />75 <br />100 <br />216 <br />150 <br />342 <br />200 <br />428 <br />250 <br />576 <br />350 <br />720 <br />j 500 <br />For SI units: l gallon = 3.785 L <br />Note: Sizing criteria specified in Section 1014.2.1 are based upon proper <br />maintenance of the grease interceptor(s). <br />Based on intermittent potentially full flow in drainage lines. <br />TABLE 1014.3.6 <br />GRAVITY GREASE INTERCEPTOR SIZING4 <br />DRAINAGE FIXTURE UNITS', 3 <br />(DFUs) <br />INTERCEPTOR VOLUME2 <br />(gallons) <br />8 <br />500 <br />21 <br />750 <br />35 <br />1000 <br />90 <br />1250 <br />172 <br />1500 <br />216 <br />2000 <br />307 <br />2500 <br />342 <br />3000 <br />428 <br />4000 <br />576 <br />5000 <br />ra <br />720 <br />7500 <br />2112 <br />10 000 <br />i 2640 I <br />15 000 <br />For SI units: 1 gallon = 3.785 L <br />Notes: <br />1 The maximum allowable DFUs plumbed to the kitchen drain lines that <br />will be connected to the grease interceptor. <br />z This size is based on: DFUs, the pipe size from this code; Table 703.2; <br />Uscfitl Tables for flow in half -full pipes (ref: Mohinder Nayyar Piping <br />Handbook, 3rd Edition, 1992). Based on 30-minute retention time (ref.: <br />George Tchobanoglous and Metcalf & Eddy. Wastewater Engineering <br />Treatment, Disposal and Reuse, 3rd Ed. 1991 & Ronald Crites and George <br />Tchobanoglous. Small and Decentralized Wastewater Management <br />Systems, 1998). Rounded up to nominal interceptor volume. <br />' Where the flow rate of directly connected fixtures) or appliance(s) have <br />no assigned DFU values, the additional grease interceptor volume shall <br />be based on the known flow rate (gpm) (L!s) multiplied by 30 minutes. <br />4 Sizing criteria specified in Section 1014.3.6 are based upon proper main- <br />tenance of the grease interceptor(s). <br />L,L29sA F C sJ A 9 i M_ 7( 1 + L.-Vea-5-y% I— <br />CZ.a <br />C c D u Co M-^ eL_t d- 44� <br />