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The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. [3] The STC provides a standardized way to compare products such as doors and windows made by competing manufacturers. A higher number indicates more effective sound insulation than a lower number.
The sound reduction index is used to measure the level of sound insulation provided by a structure such as a wall, window, door, or ventilator. It is defined in the series of international standards ISO 16283 (parts 1-3) and the older ISO 140 (parts 1-14), or the regional or national variants on these standards.
In 1962, the STC replaced its trolleybus fleet with 35 Isuzu buses. [60] The Japanese-built buses had automatic doors, telescopic shock absorbers and air suspension. [61] In 1967, the STC acquired 50 37-seat Nissan buses at a cost of $1.5 million to serve the Toa Payoh housing estate. [62]
Evacuation slide used in an emergency drill. An evacuation slide is an inflatable slide used to evacuate an aircraft quickly. An escape slide is required on all commercial (passenger carrying) aircraft where the door sill height is such that, in the event of an evacuation, passengers would be unable to step down from the door uninjured (Federal Aviation Administration requires slides on all ...
The Pilatus PC-12 is a pressurized, single-engined, turboprop aircraft manufactured by Pilatus Aircraft of Stans, Switzerland since 1991. It was designed as a high-performance utility aircraft that incorporates a large aft cargo door in addition to the main passenger door.
Jackson, who died in 2009 at age 50, was accused in 1993 of sexually abusing 13-year-old Jordan Chandler. The musician settled with the Chandler family out of court for a reported $25 million.
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