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q • <br /> t P <br /> ..:,, <br /> 0 . . <br /> rs, , L. Multiple Hood Venting(606.3.6): <br /> 1. Number of hoods vented by a single duct system: Proposed:_____, <br /> A single-duct system may serve Mote than one hood boated in the same story of the building, <br /> provided that the interconnecting ducts do not penetrate any fire-reSistance Tated oonstruction and <br /> are located in adjoining rooms; and the grease duct system does not serve a solid fuel-fired <br /> appliance. <br /> 2. An unlisted hood outlet shalt serve not more than a 12-foot section of hood. <br /> Ni. Provide seismic restraint vertical support and attachment details for the hood;shall be prepards <br /> ed <br /> , <br /> , by someone knowledgeable in structurateng'ineering,OW <br /> milsisc 401ASCE7-05) Hoo <br /> I. and equipment over 400 pounds require calculations and details for review. <br /> , 3, <br /> N. Additional Information–Type I Hood Only: <br /> 1. Grease filters shall be installed at a minimum 45 degrees angle and <br /> Proposed:_qP.--degrees <br /> equipped with drip tray and gutter beneath loWer edge&filters. <br /> 4 <br /> 9. Distance between•lowest edge of grease filters and cooking surface of <br /> Grill, frvf,e, exposed flame shall not be not be!less than 2 ft, <br /> . , Proposed: %'4 ft. <br /> : I Exposed .c.al‘ cearbl'oil shall be not less than 3%it (50711) ProPosed -77- <br /> , <br /> 3 Type I hood and duct shall neve clearances from construction of Proposeiri. <br /> , . <br /> , I GWB on metal stud(minimum 3" clearance required) (506,3.6;507.2.6) prz:eit 2. (NA-e * <br /> GWB on wood stud(minimum 18r clearance required) (500.3.6; 507.2.6) 1.4. Abri <br /> 04 dojr„,„ce. <br /> i PROTECTED <br /> i UNPROTECTED (Combustible Construct (With <br /> ion) 1-hour Fire-Rated <br /> ;. <br /> 1 <br /> Hood Min. Reg 18 in. Poposed .... in. .Mirt, Req. 3m . Proposed 6 in <br /> Duct Min. Req. 18 in, Proposed________.in. Min.:Req, 3 in. Proposed ,3,11 in. <br /> 4. Hoods less than 12 inches from ceilings or walls shall be flashed solidly. <br /> 5. Ail joints and seams shall be made with continuous iiquid-tight weldor braze made on the external <br /> I surface of the duct system. Vibration insulation connector may be used provided it consists of <br /> , <br /> i noncombustible packing in a metal sleeve joint. (506.3.2, 506.3.2.4) Joints shall be smooth and <br /> I : accessible for inspection. (506.3.2.5)A light test shall be perforrned. <br /> 1 : 6. Exhaust fans used for discharging grease exhaust shall be positioned so that the discharge will not <br /> I impinge on the roof. The fan shall be provided with an adequate drain,opening at the lowest point to <br /> 1 permit drainage of grease to a suitable collection device. (506.5.2) <br /> I 7. Fire Suoloressiol21 saem Fire Suppression System shall be per Fire Code. Portable extinguisher <br /> I shall also be provided per Fire Code. Provide automatic shutoff for make-up air, exhaust system,. <br /> suppression agent and <br /> and appliances when suppression system is activated. Dependent on <br /> . . <br /> manufacturer's requirements. Separate permit is required. <br /> 8. Performance test certificate of the hood system shall be provided,to owner before final approval. <br /> Test shall verify property operation,the rate of exhaust, makeup air,capture and containment <br /> performance of the exhaust at normal operating conditions. (507.6) <br /> 9. A pollution-control unit may be required for side-wall terminations. (506.3.13.2) <br /> • 'References: <br /> 1—internationaldedianical Code'12015) <br /> 2—International Building Code(2015) <br /> 3—International Fire Code(2015) <br /> 4—international Fuel Gas Code(2015) <br /> ...___. .. ,... .... . .. . . <br />