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installation and removal of all staging, swinging and hanging scaffolds, Hydromobile
<br />scaffold, Morgan, scaffolding, including maintenance thereof for all lathers, plasterers,
<br />brick layers, masons and other Construction Trade Crafts; the preparation for foundations
<br />or mud sills for all scaffolding, as well as maintenance shall be done by Laborers.
<br />7. Pouring, laying and weather protection (weather protection is defined as
<br />handling and fastening or securing concrete blankets, visqueen, burlap or any other
<br />equipment for weather protection) of concrete and related work: Concrete, bituminous
<br />concrete or aggregates for walls, footings, foundations, floors or for any other
<br />construction; mixing, handling, conveying, pouring, vibrating, gunniting and otherwise
<br />placing concrete or aggregates, whether done by hand or any other process; wrecking,
<br />stripping; dismantling and handling concrete forms and false work; building of centers for
<br />fireproofing purposes, firestop installation and other fireproofing materials; operation of
<br />motorized wheelbarrows or buggies or machines of similar character, whether run by gas,
<br />diesel or electrical power; when concrete or aggregates are conveyed by crane or derrick,
<br />or similar methods, the hooking on, signaling, dumping and unhooking the bucket; the
<br />placing of concrete or aggregates, whether poured, pumped, gunnited or placed by any
<br />other process; the assembly, uncoupling of all connections and parts of, or to equipment
<br />used in mixing or conveying concrete, aggregates or mortar, and the cleaning of such
<br />equipment, parts and/or connections; all vibrating, grinding, spreading, flowing, puddling,
<br />leveling and strike -off concrete or aggregates by floating, rodding or screeding, by hand
<br />or mechanical means prior to finishing. Where pre -stressed or precast concrete slabs,
<br />walls or sections are used, all loading, unloading, stockpiling, hooking on, signaling,
<br />unhooking, setting and barring into place of such slabs, walls, or sections; all mixing,
<br />handling, conveying, placing and spreading of grout for any purpose, green cutting of
<br />concrete or aggregate in any form by hand, mechanical means, grindstones or air or water.
<br />The filling and patching of voids, crevices, etc., to correct defects in concrete caused
<br />by leakage, bulging, sagging, etc.
<br />The loading, unloading, carrying, distributing and handling of all rods, mesh and
<br />materials for use in re-inforcing concrete construction; the hoisting of rods, mesh and other
<br />materials, except when a derrick or outrigger operated by other than hand power is used.
<br />All work on interior concrete columns, foundations for engine and machinery beds.
<br />The stripping of forms, other than panel forms, which are to be re -used in their
<br />original form and the stripping of forms on all flat arch work.
<br />The moving, cleaning, oiling and carrying of all forms to the next point of erection.
<br />8. The grinding of all concrete surfaces by any mode or method.
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