Specifications include, but are not limited to: a. Remove all walls, ceilings and materials as shown on the plans. b. Remove all HVAC units and ductwork except for the 4 ERUs that shall be salvaged in place. c. Remove all plumbing piping and electrical conduits and boxes except for those marked before demolition starts. d. Leave in place all roof drain piping and all main sanitary sewer main trunk lines. e. Remove and salvage all marble slabs onsite as shown on the plans. f. Have qualified elevator maintenance company remove the elevator and all elevator equipment. g. Dispose of removed materials appropriately. h. Remove all the above materials to just below the roof deck as to not disturb the penetration through the roof.