Electrical Distribution in Buildings
The National Fire Protection Association National Electrical Code is the basic safety standard for electrical design for buildings in the United […]
Electric Elevators
An electric-elevator installation requires, in addition to the car described in Art. 16.8 and the hoistway components described in Art. 16.7,
ElarmS: Earthquake alarms systems for California
In Southern California, an earthquake-prone area, many cities are under earthquake risks, hence earthquake early warning systems are becoming an important
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Elasticity (Dimensional stability)
The definition of pure elasticity is that strains appear and disappear on application and removal of stress. The elastic properties
Effects of Climate
The climate in the region where the roof will be constructed often plays a key role in design of the roof
Effects of Roof Size, Shape, and Slope
Roof size and shape often dictate material and system selection. For example, if the roof is only 2 or 3 ft
Effects of Rooftop Traffic
If there will be periodic traffic on a roof; for example, to maintain mechanical equipment, traffic walkway pads should be specified
Effects of local site conditions on ground motions
Geotechnical and structural engineers must take into account two fundamental characteristics of earthquake shaking: 1) how ground shaking propagates through the
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Effects of shrinkage of concrete and of temperature
In the fairly dry environment of a building, an unrestrained concrete slab could be expected to shrink by 0.03% of its
Effects of shrinkage of concrete and of temperature Read Post »