Preparing, conveying, or working-up building materials or building elements in situ Other devices or measures for constructional work

EFIXED CONSTRUCTIONS E04Building E04GSCAFFOLDING FORMS SHUTTERING BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIR USE HANDLING BUILDING MATERIALS ON THE SITE REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS

E04G21/00Preparing, conveying, or working-up building materials or building elements in situ Other devices or measures for constructional work

E04G21/005Mortar boards E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast E04G21/025Buckets specially adapted for use with concrete E04G21/04Devices for both conveying and distributing E04G21/0409with conveyor belts E04G21/0418with distribution hose E04G21/0427on a static support E04G21/0436on a mobile support E04G21/0445with booms E04G21/0454with boom vibration damper mechanisms E04G21/0463with boom control mechanisms E04G21/0472Details of connection of the hose to the formwork E04G21/0481Concrete chutes E04G21/06Solidifying concrete E04G21/061by applying vacuum or vacuum combined with vibration E04G21/063... E04G21/08 take... E04G21/065making use of vibrating or jolting tools acting upon the shuttering E04G21/066making use of vibrating or jolting tools acting upon the surface of the concrete, whether or not provided with parts penetrating the concrete E04G21/068making use of vibrating or jolting tools acting upon the reinforcement E04G21/08Internal vibrators E04G21/10Devices for levelling E04G21/12Mounting of reinforcing inserts Prestressing E04G21/121Construction of stressing jacks E04G21/122Machines for joining reinforcing bars E04G21/123Wire twisting tools E04G21/125Reinforcement continuity box E04G21/126for cable loops E04G21/14Conveying or assembling building elements E04G21/142Means in or on the elements for connecting same to handling apparatus E04G21/145specific for hollow plates E04G21/147specific for prefabricated masonry wall elements E04G21/16Tools or apparatus E04G21/161Handling units comprising at least considerable parts of two sides of a room or like enclosed space E04G21/162Handles to carry construction blocks E04G21/163Jacks specially adapted for working-up building elements E04G21/164specially adapted for working-up chimneys E04G21/165specially adapted for in-situ prefabricated building elements to be tilted up in position E04G21/166Landings, receiving platforms E04G21/167specially adapted for working-up plates, panels or slab shaped building elements E04G21/168used for tilting E04G21/169specially adapted for working-up reinforcement mats E04G21/18Adjusting tools Templates E04G21/1808Holders for bricklayers' lines, bricklayers' bars; Sloping braces E04G21/1816Adjustable positioning means between line-holder bars and construction E04G21/1825Line-holders without supporting bars E04G21/1833Line-holders for setting-out builders' work E04G21/1841Means for positioning building parts or elements E04G21/185for anchoring elements or elements to be incorporated in the structure E04G21/1858Templates for window or door openings E04G21/1866for making arches E04G21/1875for making curved walls E04G21/1883Spacers E04G21/1891Cut-marking templates for rafters; Templates used for assembling building frameworks E04G21/20for applying mortar E04G21/201Trowels E04G21/202Hoses specially adapted therefor E04G21/203Prepared mortar strips, pouches or the like to be applied between masonry courses E04G21/204Mortar sledges E04G21/205with closable mortar opening E04G21/206Devices to apply thin-bed mortar joints E04G21/207Static templates for applying a predefined layer of mortar E04G21/22for setting building elements with mortar E04G21/24Safety or protective measures preventing damage to building parts or finishing work during construction E04G21/241for temporarily closing door or window openings E04G21/242for temporarily covering the whole worksite E04G21/243for creating a temporary partition in a closed room E04G21/245for temporarily protecting wall crowns E04G21/246specially adapted for curing concrete in situ E04G21/247specific for protecting windows or doors leaves E04G21/26Strutting means for wall parts Supports or the like E04G21/28against unfavourable weather influence E04G21/30against mechanical damage or dirt E04G21/32Safety or protective measures for persons during the construction of buildings E04G21/3204against falling down E04G21/3209Temporary tunnels specially adapted against falling objects E04G21/3214Means for working on roofs E04G21/3219Means supported by the building wall E04G21/3223Means supported by building floors or flat roofs E04G21/3228Folding railings for flat roof edge E04G21/3233without permanent provision in the floor or roof E04G21/3238using counterweights E04G21/3242using clamps E04G21/3247Storey high safety barrier hung from the facade and sliding up from level to level as work progresses E04G21/3252Protections E04G21/3261Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines E04G21/3266Safety nets E04G21/3271Safety mattresses E04G21/3276Arrangements on buildings for connecting safety-lines E04G21/328fastened to the roof covering or insulation E04G21/3285fastened to standing seams of the roof covering E04G21/329with measures for dampening the fall E04G21/3295Guide tracks for safety lines