Handling and Lifting Requirements

The below graph shows the relationship between mat size, placement method, and installation cost. Smaller mats, due to their light weight, can be placed manually by hand. From the graph, the smaller the mat the higher the labor cost. The limit for manually placed mats is around 18 ft where the labor cost is the lowest. Mechanical placement (equipment, cranes, etc.) is needed for larger mats. The graph shows the minimum length is around 18 ft. The longer the mat the more economical it is to place. The maximum length is based on fabricating limits, bar sizes used, and transportation issues.

British Cement Association.“ Economic Assembly of Reinforcement ,”
Bennet, D. and MacDonald, L.