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Underslung (lower-beam) launching gantry used for Skyline guideway construction (2015). A launching gantry (also called bridge building crane, and bridge-building machine) is a special-purpose mobile gantry crane used in bridge construction, specifically segmental bridges that use precast box girder bridge segments or precast girders in highway and high-speed rail bridge construction projects.
Underslung (lower-beam) movable scaffolding system used during construction of the Aurachtalbrücke Emskirchen [] (2015). A movable scaffolding system (MSS) is a special-purpose self-launching form used in bridge construction, specifically prestressed concrete bridges with segments or spans that are cast in place.
The SLJ900/32 as aforementioned, is 91 metres (299 ft) long, 7 metres (23 ft) wide, 9 m (29 ft 6 in) tall and weighs around 580 tonnes (640 short tons). [4] Compared to conventional cranes which require clear land and are typically only able to lift a few meters of bridge material per-lift, the SLJ900/32 is capable of lifting an entire large segment of bridging material (some of which weigh ...
A rubber tyred gantry crane (US: rubber tired gantry crane)/ RTG (crane), or sometimes transtainer, is a wheeled mobile gantry crane operated to ground or stack intermodal containers. Inbound containers are stored for future pickup by drayage trucks, and outbound are stored for future loading onto vessels.
Presumably, a launching gantry is a machine for installing girders but the article is mainly about the girders themselves. Biscuittin ( talk ) 12:40, 1 September 2015 (UTC) [ reply ] Somewhat fixed
Gantry (rocketry), the frame which encloses and services a rocket at its launch pad; Gantry crane, a crane having a hoist fitted in a trolley for parallel movement Rubber tyred gantry crane, a mobile gantry crane used in intermodal operations; Gantry tower or anchor portal, a structure commonly found in electrical substation or transmission line
Only $10.4 million was allocated for launching the congestion pricing program and $2 million for research. The rest of the grant funded transportation infrastructure and services: $213.6 million to improve and build new bus depots, $112.7 million to develop bus rapid transit routes, and $15.8 million for expanded ferry services.
The 1970s-era studies and others since have cited beam director cost as a possible impediment to beam-powered launch systems. A recent cost-benefit analysis [31] estimates that microwave (or laser) thermal rockets would be economical once beam director cost falls below 20 $/Watt. The current cost of suitable lasers is <100 $/Watt and the cost ...