A construction PM may not be the one drilling holes, turning screws and hammering nails, but it's his or her responsibility to make sure that all of the work is done properly, on time and within the projected cost.
The PM typically sets specific project goals after the contract with the owner (client) is signed. The PM reviews the contractual conditions of performance - requirements and deliverables - to determine precisely the work that must be accomplished in order to satisfy the contract. He or she then determines cost and time goals as well as "micro-goals" for accomplishing different phases of the construction. Based on these goals, the PM sets out the number of workers and types of supplies and materials necessary to reach them [source: Shaker].