Project Highlights:
• 65.00 cy excavating access pits & underpinning pits
• 42.00 cy placing concrete
• 25.00 cy dry pack spread
footing and foundation
walls
• 223 sf single face formwork
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J.F. White Contracting was contracted to underpin the southwest corner of Harvard University Gordan McKay Building at 29 Oxford St., Cambridge, MA. We underpinned this corner of the building to install a new spread footing 10 feet below the existing spread footing and do the same for the foundation wall and and construct a new column up to the existing spread footing. This would allowed excavating for an additional level below the ground floor of the McKay building for the installation of a loading dock.
Vertical lagging was used to develop the access pit and horizontal lagging for the underpinning pit. J.F. White excavated the underpinning pit using 2 foot lift to minimize the chance of settlement on the poor soil conditions.
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