1 Man Cave Project–Build basement under Garage Floor2.1 Excavate garage for Basement 12.2 Excavate Garage2.3 Excavate garage2.4 Excavate Garage out and underpin Footing for max height3 Underpinning and new Sump Pit for Man Cave4 Underpinning and Rebar Installation5 Sump Pit and Dowels for Rebar6 Marking Wall for Concrete Wall Cut