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Plan Check 1328 <br />Larry Callahan <br />January 10, 1984 <br />Page Two <br />6. Horizontal dampers should not be allowed in floor openings. See note <br />#3 on Sheet M-17. Section 4306(i) <br />7. Garage ventilation should be designed to completely exhaust the heavier <br />than air gas fumes and products of automobile exhaust. The layout shown on <br />Sheet M-14 does not appear to be satisfactory. <br />8. Every room containing a boiler should be separated from the rest of <br />the building by not less than 1 hour fire resistive occupancy separation. <br />See Sheet M-20. Section 1008 <br />9. A leak in the fuel oil supply to the boiler may be a serious hazard. <br />Some jurisdictions require a separate 2 hour fire rated shaft enclosure for <br />the fuel oil supply and fuel oil return pipes with inspection access at the <br />bottom; a shut off device to insure no constant pressure on the supply <br />pipe when the day tanks are filled; and a curb around the day tanks to con- <br />fine any oil spill. <br />10. The size and location of the combustion air openings to the boiler room <br />should be shown. Section 601 UMC <br />11. Condensing units or combination of refrigerant interconnected conden- <br />sing units totally 100 or more hp which contain Group I refrigerants should <br />be enclosed in a machinery room as provided in Section 1507. Section 1505 <br />UMC <br />12. The exhaust outlet for the garage should be in accordance with Section <br />1104(c) UMC. <br />Please feel free to contact me if there are any questions. <br />Very truly yours, <br />Frank S. Natsuhara, P.E. <br />Regional Engineer <br />ljh <br />c/WMFL Architects <br />