Zaragon Place Lofts II – Ann Arbor, MI

The sister building to the original Zaragon Place I, Zaragon Place II is a 14-story tower, offering dramatic and flexible living.

Located at the southeast corner of East William and Thompson streets in Ann Arbor’s newly zoned downtown core, the 96,000 SF building includes 99 dwelling units, ground-floor retail space and 40 off-street parking spaces.

About 2,000 square feet of the first floor has been designated for commercial space —a cafe with outdoor seating. The remainder of the first floor includes a lobby, mail room, exercise room and manager’s office. The second and third floors contain 40 off-street parking spaces and 40 bicycle parking spaces. Floors four through 14 contain nine apartments each — one 4-bedroom unit, six 2-bedroom units, and two 1-bedroom units. The materials and architectural design are similar to that of Zaragon Place I, except the shape of the building is somewhat different, and clear glass with integrated awnings are used for the windows of the first-floor retail space.

Structural highlights:

  • The building sits on an existing bank building site which has a basement and large – over 10’ x 10’ – spread foundations under columns. The Zaragon Place II building is designed to bear on cast-in-place auger cast pile foundations. In many cases, the existing foundations interfered with the placement of auger cast piles, requiring either coring through or partial removal of existing foundations.
  • The structural framework consists of a combination of cast-in-place concrete at levels 1 to 3, and precast concrete bearing walls/precast hollow core floor planks for levels 4 through roof.
  • Irregular bearing wall layout for the residential structure above and 30’ x 30 column grid for the parking and retail below presented a challenge for the third floor transfer structure.
  • To avoid costly framework of the irregularly spaced transfer beams, Desai/Nasr designed the third level structure using a 3’ thick flat slab which is supported by columns placed at 30’ x 30’ grid, and supports linear loads from bearing walls above which do not relate to columns below.
  • During construction, Desai/Nasr worked very closely in the field with subcontractors to ensure proper re-steel and concrete placement.