How would you scope out & manage a project having different key results areas in I.T, Civil Eng, Commercials, HR and Upper Management?

For such a senario, a matrix based organization become handy. Experts from all the functional groups can be placed to help out in the project after seeking approvals from their functional managers and higher-ups.

In the absence of such experts availability organization-wide, temporary consultants can be hierd keeping in view the project's cost constrains.