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The performance of super-heavy jib cranes is measured in tonne-metres, the product of weight and lifting radius, typically as much as 100,000 tonne-metres for large cranes. [8] Sarens offer a range of such cranes from 90,000 to 250,000 tonne-metres. [4] [5] Lifting a 3,200 ton load to a height of 120 m (390 ft) may take up to 15 minutes.
[1] [2] An archaic spelling is gib. [3] Usually jib arms are attached to a vertical mast or tower or sometimes to an inclined boom. In other jib-less designs such as derricks, the load is hung directly from a boom which is often anomalously called a jib. A camera jib or jib arm in cinematography is a small crane that holds nothing but the ...
A level-luffing crane is a crane mechanism where the hook remains at the same level while luffing: moving the jib up and down, so as to move the hook inwards and outwards relative to the base. [ 1 ] Usually the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
Stothert & Pitt's 15 ton crane for the Port Alfred harbour works. In 1881, Stothert and Pitt constructed a horizontal jib crane for Sir John Coode's harbour building work on the Kowie River at Port Alfred in South Africa. [6] This was a rail-mounted steam crane, with a fixed horizontal jib carrying a movable trolley or 'crab'.
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Equipped with Vosel (M2) fire control system. [28] Type 63-1: Mortar launcher China United States: 60 mm mortar. Based on M2 variant in service. [29] LLR 81: Mortar launcher Spain France: 81 mm mortar. MO-81-61C and MO-81-61L variants in service. [30] [31] MO-120-RT: Mortar launcher Spain France: 120 mm mortar. [32] [33] POF P3 Mk2 mine: Anti ...
KARACHI, Pakistan (Reuters) -Two Chinese nationals were wounded on Tuesday by a security guard who opened fire at a garment factory in Pakistan's commercial hub Karachi, in the latest in a string ...
A crane collapse in midtown Manhattan on Wednesday morning left 11 people injured, including two firefighters, according to the FDNY.
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