Occupancy Hazard Classifications

Sprinkler Hazard Classification

Building codes classify various occupancies according to fire hazard. These classifications are used to determine the design of sprinkler systems. The light hazard classification is used for buildings where it is relatively easy to provide effective fire protection. The quantity and combustibility of the building's contents is considered to be low, and a low rate of heat release is expected from possible fires. Light hazard occupancies include apartments, auditoriums, churches, hospitals,...

Arrangement Of Escalators

Parallel Arrangement Escalators

The most common arrangement for escalators places the entrances and exits to their upper and lower ends at opposite ends of the escalator. This is known as a crisscross arrangement. Escalators arranged in this fashion can be built for less money, take up the minimum amount of floor space, and have the lowest structural requirements. A spiral crisscross arrangement Fig. 48-2 , where the stairs nest into each other, offers a rapid and pleasant trip, and is very economical of space. Spiral...

Electrical System Design Process

Engineers start the process of designing electrical systems by estimating the total building electrical power load. They then plan the spaces required for electrical equipment such as transformer rooms, conduit chases, and electrical closets. The amount of energy a building is permitted to consume is governed by building codes. A building energy consumption analysis determines whether the building design will meet the target electrical energy budget. If not, the engineer must modify the...