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EXHIBIT D -2 <br />Grandfathered /Approved Building Characteristics <br />Confirmation that the following is deemed a compliant 2 -hour fire barrier construction: <br />(a) existing interior partitions at stairs and elevators are 4" thick terra cotta tiles with <br />approximately 1" plaster on exposed faces. Final construction will include metal furring <br />and an additional 5/8" type X gypsum board at exposed face. <br />(b) Existing floor /ceiling horizontal assembly is cast in place concrete with 12 "x12 "x6" terra <br />cotta tile "fillers ". Overall floor depth is approximately 8" thick. <br />Existing stairs do not comply with current requirements for tread/riser dimensions. Existing <br />stairways are cast -in -place concrete integral with the building structure and removing or replacing <br />the stairs is impractical. Compliancy with number of exit requirements assumes that existing <br />stairway tread/riser dimensions will be grandfathered/approved. <br />Existing elevator shafts do not have required 90 minute hoistway doors at each floor. New walls <br />and doors complying with smoke and fire barrier requirements will be installed to create an <br />elevator lobby at each floor above the level of discharge. Compliancy assumes that doors with <br />hold -opens at elevator lobbies will be acceptable without fully complying with ADA <br />requirements. <br />4. Approval of proposed means of egress design. <br />Existing historical elements within the 1st and 2nd floor lobby / atrium space may need special <br />approval, including (a) guardrails at atrium are not 42" high per current code, and (b) existing <br />stairs at atrium lobby do not have 42" guardrails and separate handrails at 36 ". <br />D -2 <br />dms.us.52637413.08 <br />