Alterations & Retrofitting



Simplex Engineering has significant expertise in alterations and retrofitting. Sample previous projects by our engineers during their career at Simplex Engineering or other engineering companies include the list shown below. Our expertise in this area is also reflected in our technical publications and engineering tools.

  • Rehabilitation of East Bolton Elevated Tank, Bolton, Ontario (nonlinear buckling analysis of tank vessel, design optimization of the additional stiffeners for the tank vessel, development of strengthening technique for the connection between the access tube and the tank floor, design of inner and outer painter rails, modifying an existing bolted access hatch to a submarine style access hatch, design of roof stiffeners considering new loads and openings, design of drip edge, design of connections of access tube to overflow pipe, weir, and mixing system).
  • Abraham Goodman House, New York, NY, USA (addition of a floor and renovation of an exiting reinforced concrete building).
  • Geday Residence, New York, NY, USA (reinforcing of an existing reinforced-concrete flat slab to create a double-height living room by cutting a corner panel of the slab and join two floors using stairs).
  • 15E 96th street, New York, USA (major alteration to an existing building).


Alterations and/or Retrofitting Engineering Inquiry: