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188w3 <br />and storerooms accessory to such stages or enclosed plat- <br />forms. <br />EXCEPTIONS: 1. Stages or enclosed platforms <br />open to the auditorium roam on three or more sides. <br />2. Altars, pulpits ar similar platforms and <br />their accessory rooms. <br />3. Stage gridirons when side-wall sprinklers <br />with 135° F, rated heads with heat-baffle plates <br />are installed around the entire perimeter of the <br />stage at points no more than 30 inches below the <br />gridiron nor more than 6 inches below the baffle <br />plate. <br />4. Under stage or under enclosed platform <br />areas less than 4 feet in clear height used exclu- <br />s ively for chair or table storage and lined on the <br />inside with materials approved for one-hour f ire- <br />resistive construction, <br />3. Group E, occupancies. <br />A, In basements larger than 1500 square feet in <br />floor area. <br />B. In any enclosed usable space below or over a <br />stairway, <br />4. Group I occupancies: <br />EXCEPTIONS: 1. In hospitals of Types I, II <br />Fire-resistive and II One--hour construction, the <br />automatic sprinkler system may be omitted from <br />operating, delivery, cardiac, X-ray and intensive <br />care rooms and patient sleeping rooms not exceeding <br />450 square feet in area when each such room is pro- <br />vided with smoke detectors connected to a con- <br />tenuously attended station or location within the <br />building, Increases for area and height specific <br />in Sections 506~c~ and 50T shall not apply when <br />this exception is used. <br />2. In jails, prisons and reformatories, the <br />piping system may be dry, provided a manually <br />operated valve is installed at a continuously moni- <br />tored location, opening of the valve will cause <br />the piping system to be charged, Sprinkler heads <br />in such systems shall be equipped with fusible ele- <br />ments or the system shall be designed as required <br />for deluge systems in U,B.C, Standard No, 38-1, <br />5« Group H. Occupancies: <br />A. In Group H, Divisions 1 and 2 Occupaniies <br />larger than 1500 square feet in floor area, <br />B, In Group H, Division 3 Occupancies larger than <br />3000 square feet in floor area. <br />C. In Group H, Division 4 Occupancies more than <br />one story in height. <br />D. In rooms where flammable or combustible <br />liquids are stored or handled in excess of 30 gallons of <br />Class I-A, 60 gallons of Class I-~B, 90 gallons of Class <br />I-C, 120 gallons of Class II, 250 gallons of Class <br />-g- <br />