Design Architect HansonLA and Executive Architect Adamson put the first drone landing pad on this building in Downtown.  The 22 story retail and residential Ten50 tower has 3 below grade levels.  The square pit was simple for Cefali to shore.  With 2 and 3 rows of tiebacks, the shoring installation and excavation progressed quickly.  Wet and dry utilities were deep, especially a communications vault immediately adjacent to the shoring bulkhead.  Luckily, corner-bracing could be used here.  Extensive monitoring during pile installation was used along an existing brick building to aid the contractor in preventing cracking in the old structure.