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| Cradling
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Support framework for lath and plaster on a vaulted ceiling. |
| Craft
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Skill requiring manual ability. |
| Craftsman
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Person who is skilled at a craft, which requires manual ability. |
| Craftsman style
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Architectural style, which evolved, near the turn of the century, as part of the Arts and Crafts movement. |
| Cramp
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Iron or steel rod, which holds blocks of stone together by having ends, bent at right angles to the length of the rod. |
| Crane
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Any one of the various motorized, machines for lifting or moving heavy weights by use of a horizontal bean or movable projecting arm traveling on an overhead support. They are used on construction sites for many jobs. |
| Crane bridge
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The overhead structural support spanning the distance between the girders or the rails on the bridge crane. Crane Cab Seating area, attached to the bridge or trolley, for the operator of the crane. |
| Crane girders
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Also called crane rails, this structural section supports the bridge crane. |
| Crane jib
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Different types of jibs, which are the extensions that top a crane tower, making additional moving and lifting possible. The Saddle Jib, which is a horizontal extension positioned at a right angle to the tower has a hook attached to a trolley which moves along the length of the jib which changes the hook reach. Saddle jibs can be used for both distance and close loads. Greater lifting height can be obtained from the use of a luffing jib, which is a pivoting extension at the top of the tower, with a hook suspended from its end, which can be changed from close to vertical to close to horizontal. Fixed Luff jibs are permanently at a horizontal angle but can pivot at the tip of the tower. Its hook can be fixed to a trolley so it can either move along the length of the jib or suspend from the end of the jib. |
| Crane rail
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The structure on which the ends of a gantry or bridge crane ride. |
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