916 PACIFIC AVE 1ST FLOOR 2018-01-01 MF Import

Mr. Tis Tyler Paqe 4 June 19, 1991 separatione have been provided for all ahaft enclosures accordinq to Section 1706. This requirement includea the escalator as indicated in Section 3309(a) . Based on a previous conversation With Sam Preston, we plan to provide a water curtain at the top vith the required saoke barriers in lieu of a coilinq door. A two-hour separation has also been indicated around the lobby space to isolate it froe the remainder of the buildinq. This is to provide a horizontal exit for tha north stairway of the south . toaer accordinq to Section 33oe. Thia will allow occupante to eqress from thia raquired exit throuqh the lobby and directly to the upper, open-air parkinq deck ae discuased at the June 5 meetinq. D. The four-hour aeparation is indicated with the color yellow and fsolates the parkinq qaraqe occupancy from the hospital buildinq accordinq to Table 5-B and Section 503. openinga shall be fire-protection rated for three hours. Pleese note Exception No. 1 in Section 501(d) , and inform us if ve are allowed to provide a three-hour seperation between the hospital buildinq and the parkinq garage. E. one-hour fire separations indicated in red have been provided for soiled linen, storaqe rooms, etc. , accordinq to Table lo-A. Openinqs shall be rated for 6o minutes. �. op•n rarRinq aaraq• � A. The lower parkinq level exceede the minimum requirements of an "open parkinq qaraqe" as outlined in Section 7o9(b) 2 oE the UBC. The total perimeter of the qaraqe is 770 feet of which 322 feet are open. This totals 41.8 percent on two eidea. Two hundted feet of this are open full heiqht and tAe remaininq 122 feet are open above a 42-inch high concr�te guard rail. 8. The total aree of this lowar level is 30,713 squere feet. we raquest that the new city ordinance req�iirinq sprinkling of buildinqs exceeding 6,000 square feet be reviewed for this Type I noncombustible, concrete structure which i• an �open qaraqeN. Please infor� us if you datermine that �prinklers are required. �. A four-hour separation will b� provided from the buildinq or a three-hour separation if Exception No. 1, Section 503 (d) is acceptable. Thie separetion will include the vertical plane between the two occupancies and the floor- to-ceilinq separetion between the main level lobby and the baseneht level parkinq area.