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From road and track construction the principles of design found their way into building architecture. An interior mule ramp consisted of a spiral, curved or straight ramp within a building that had a gentle incline and non-slip floor. Such ramps may be continuous but more often have transverse steps at large intervals.
Local building codes often dictate the number of emergency exits required for a building of a given size, including specifying a minimum number of stairwells. For any building bigger than a private house, modern codes invariably specify at least two sets of stairs, completely isolated from each other so that if one becomes impassable due to ...
Before any excavation takes place, the contractor is responsible for notifying all applicable companies that excavation work is being performed. During excavation, the contractor is responsible for providing a safe work environment for employees and pedestrians. Access and egress are also important parts of excavation safety. [77]
American Residential Services (ARS) is a United States network of plumbing, and home and commercial heating and air conditioning businesses, operating under the trade name ARS/Rescue Rooter. The trade name came from the acquisition and merging of ARS and Rescue Rooter by their then-parent company ServiceMaster .
Asphalt batch mix plant A machine laying asphalt concrete, fed from a dump truck. Asphalt concrete (commonly called asphalt, [1] blacktop, or pavement in North America, and tarmac or bitumen macadam in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. [2]
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A wheelchair ramp is an inclined plane installed in addition to or instead of stairs. Ramps permit wheelchair users, as well as people pushing strollers, carts, or other wheeled objects, to more easily access a building, or navigate between areas of different height. Ramps for accessibility may predate the wheelchair and are found in ancient ...
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