new york city construction

huangyhg

new york city construction
i've been asked to do a preliminary design on a new 9-story building in manhattan.  the building footprint is only 4000sf.  my initial tendency is to use a structural steel frame, but the client had been led to believe that a concrete frame would be cheaper and faster to build.  i personally don't see how it could be built faster than a steel frame, but nyc is a funny place.  does anybody have any experience in this area?
i've worked in manhattan for 20+ years, although not much building design. shipping and erection access is a key issue in the city. most streets cannot be closed during the day. where in manhattan is the facility to be constructed; it could shed some more light on the issues.
project is lower west side (greenwich st. & hubert st.).
contact the aisc solution cenetr they can probally develop a cost estimate for both the steel and concrete alternative.