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EXHIBIT D-2 <br /> Grandfathered/Approved Building Characteristics <br /> 1. 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 /> 2. 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 /> 3. 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 elevator <br /> lobby at each floor above the level of discharge. Compliancy assumes that doors with hold-opens <br /> at elevator lobbies will be acceptable without fully complying with ADA requirements. <br /> 4. Approval of proposed means of egress design. <br /> 5. 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 stairs <br /> at atrium lobby do not have 42"guardrails and separate handrails at 36". <br /> D-2 <br /> dms.us.52637413.08 <br />