The Load Rating is a measure of bridge live load capacity and has two commonly used categories: Inventory Rating, as defined by the current AASHTO Manual for Bridge Evaluation, is that load, including loads in multiple lanes that can safely utilize the bridge for an indefinite period of time.
The Construction Industry âº Types of Construction THE CONSTRUCTION INDUSTRY IS divided into two sectors: Non-residential, which has three sub-sectors (heavy industrial, institutional and commercial, engineering), and Residential. Each sector has its own merits with a varied and rewarding range of work projects. You might find yourself: 1  constructing cutting-edge, eco-friendly homes. 2  constructing massive hydro-electric projects like the Niagara Tunnel Project. 3  building state-of-the-art entertainment complexes, like the Edmonton arena, Rogers Place. 4  building a super-bridge, like the Port Mann Bridge.
Note, that not all types of construction cost the same per square foot, and even more importantly, the cost of construction per square foot varies significantly with location. Below are four different types of commercial construction and the varying cost per square foot to expect for each in different regions.