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Having wound the rope on the winch, the third leg is shifted to the first two until the distance between them is 4-4.5 m. After lifting, the tripod is carried out by its centricking, and then the lower ends of the legs are broken into the ground. To give the tripod greater stability, as well as for the convenience of work, they are put on the legs of the legs from bars or thick boards on nails with brackets. Threens are often extended in height with one or two belts with a boardwalk for floors, and the floorboards should be at least 7 cm thick. The first belt is arranged at an altitude of 2-3 m, and the second — 5 m from the ground. When drilling, when the casing is high above the ground, the workers are on the first floors. In the second floors, when the rise or descent of the rods into the well, there is one worker that supports the rods when leading and developing and puts on and removes the farstups from the rods. The message between the floors is carried out by internal stairs. After putting the tripods, the belts are arranged for a balancer and a hitch is carried out and the blocks are mounted, if any were not fixed before the start of the tripod lifting. The device and installation of a four -legged log tower with a shkworm is performed similarly to the method described above. With high towers, the legs are usually fed from two logs.