
Engineering Science Laboratory, Harvard University
Cambridge, Massachusetts
Challenge:
Remove the existing EPDM, ballasted roof and wet insullation while taking consideration for 21 exhaust fan units that are used in ongoing experiments.
Solution:
A new 5-ply built-up roofing system with tapered insulation was installed. All drains were replaced and a new walkway system was provided. CBI designed new, custom flashing details at parapet walls and coordinated phased refurbishing of 21 exhaust fan units used in ongoing experiments. New universal electrical mounts with new wiring and boxes were installed at each fan. The laboratory is approximately 7,200 SF.
CBI also designed repairs to the curtain wall. The deteriorated parapet cap was removed and replaced with a new precast concrete cap to match existing, then coated with opaque sealer. The exposed aggregate architectural finish exterior building skin was repaired with concrete spall repair techniques using custom concrete mix and aggregate from the location of the original precast supplier. Epoxy injection was used at exposed aggregate finish and extensive caulking.
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