3003 W CASINO RD BLDG 40-21 2018-09-21

Pag 2=of4 -Examine two separate design strategies (for all occupied levels other than the first and second story): "Mezzanine" approach. "Building within a building" approach. Mezzanine approach Major code requirements (Section 505): -No limit to the number of mezzanines levels in any room (UBC formerly limited to two mezzanine levels). -The aggregate area of mezzanines shall not exceed one-third of the area of the room or space in which they are located. -Enclosed mezzanines are permitted where served by two means of egress, one of which provides direct access to an exit. Mezzanine area analysis: (Determined by including all occupied levels, except for the factory floor and the sin-pile largest additional story within the building) -Building(40-2p (124,860/406,422 =0.31 therefore OK) •Building - 2 (63,830/355,872 =0.18 therefore OK) -Building 40-23 (129,609 /406,422 =0.32 therefore OK) -Building 40-24 (60,751 /356,883 =0.17 therefore-OK) -Building 40-25 (195,429 /460,005 =0.42 therefore not OK) -Building 40-26 (98,635 /408,444 =0.24 therefore OK) -Building 40-31 (88,998 /241,200=0.37 therefore not OK) -Building 40-32 (60,322/211,200=0.29 therefore OK) -Building 40-33 (96,187/241,200 =0.40 therefore not OK) -Building 40-34 (43,785 /211,200=0.21 therefore OK) -Building 40-35 (48,235 / 136,800=0.35 therefore not OK) -Building 40-36 (18,547 / 121,200 =0.15 therefore OK) Advantages: -Simplicity of code requirements. -Largely complying. -Current design strategy. Disadvantages: -Four oversized mezzanine areas (potential mitigation exists through the special industrial occupancy provisions of Section 503.1.2 allow for mezzanines up to two-thirds of the room area). -Limited prospect for future expansion. -Minimum code control. Building within a building Location on property: -All portions of the building in excess of two stories in height have direct fire department vehicle access. -Excellent fire flow water supply. -Exterior walls of buildings do not require fire-resistance rating when 10 feet or greater from an assumed lot line (Table 602). -Unlimited, unprotected openings are permitted in building exterior walls greater than 20 feet from an assumed lot line (Table 704.8). Building height: 8/5/2005