Masonry Magazine February 2009 Page. 30
MAST CLIMBERS
Mast climbers are self-propelled work platforms commonly used in the construction and maintenance of tall structures. They consist of a working platform that moves vertically along a mast or tower, providing access to various heights.
Mast climbers offer several advantages over traditional scaffolding, including increased efficiency, improved safety, and greater flexibility. They can be quickly erected and dismantled, and they can be easily moved from one location to another.
Mast climbers are typically powered by electric or hydraulic motors, and they can be equipped with a variety of safety features, such as overload protection, emergency brakes, and guardrails. They are also designed to withstand high winds and other environmental conditions.
Mast climbers are used in a wide range of applications, including:
* Construction of high-rise buildings
* Maintenance of bridges and dams
* Installation of wind turbines
* Painting and cleaning of facades
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MOBILE ELEVATING WORK PLATFORMS (MEWPS)
Mobile Elevating Work Platforms (MEWPs), also known as aerial work platforms (AWPs) or scissor lifts, are mechanical devices used to provide temporary access for personnel and equipment to elevated areas. They are characterized by their ability to move to different locations while elevated, offering flexibility and efficiency in various work environments.
MEWPs come in a variety of types, each designed for specific applications. Scissor lifts provide a stable platform for vertical lifting, while boom lifts offer greater reach and maneuverability. Articulating boom lifts can navigate around obstacles, and telescopic boom lifts provide extended reach.
MEWPs are widely used in construction, maintenance, warehousing, and other industries where work needs to be performed at height. They offer a safer and more efficient alternative to ladders and scaffolding, reducing the risk of falls and improving productivity.
Proper training and certification are essential for operating MEWPs safely. Operators must be familiar with the specific type of MEWP they are using, as well as the relevant safety regulations and procedures. Regular inspections and maintenance are also crucial to ensure the safe operation of MEWPs.
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OVERHEAD GANTRY CRANES
Overhead gantry cranes are lifting devices used in industrial settings to move heavy objects horizontally and vertically within a defined area. They consist of a horizontal beam (the bridge) supported by legs or columns that travel along fixed runways on the floor. A hoist is mounted on the bridge and can move along its length to lift and position loads.
Gantry cranes are typically used in manufacturing plants, warehouses, and shipyards to handle materials, equipment, and finished products. They offer a versatile and efficient solution for lifting and moving heavy loads, especially in areas where overhead space is limited or where a permanent overhead crane structure is not feasible.
Gantry cranes come in various configurations, including single-girder, double-girder, and portable models. Single-girder cranes are suitable for lighter loads and shorter spans, while double-girder cranes can handle heavier loads and longer spans. Portable gantry cranes are designed for temporary or mobile applications.
Safe operation of gantry cranes requires proper training and adherence to safety regulations. Operators must be qualified and familiar with the crane's operating procedures, load limits, and safety features. Regular inspections and maintenance are also essential to ensure the crane's safe and reliable performance.