The building site itself may influence the selection of a suitable forming system, because of site limitations and accessibility for
construction operations. The feasibility of using flying forms, for instance, is influenced by site characteristics, which include:
1. Accessibility to the site.
2. Availability of a fabrication area.
3. Surrounding area restrictions such as property lines, adjacent buildings, power lines, and busy streets. In open and unrestricted suburban sites, all forming systems are practical and some other considerations should be evaluated to determine the most efficient and cost-effective system. In downtown restricted sites, the only possible system may be ganged units that can be transferred from floor to floor.