of your project determines the skills required and the costs associated with the construction process. On large custom projects, in the absence of a design professional such as an architect or project engineer, you may consider hiring a construction manager.
A construction manager can act as a general contractor and usually handles the site work to completion. They are compensated by a set fee that is a % of the project total cost, a flat fee arrangement or a cost plus with bonuses for exceeding schedules and cost savings. The erector usually installs the steel components, partitions, and doors after the contractor has installed the concrete.