Crane beams are installed immediately after installation of the columns in the mounting cell. When lifting the crane beam is held by two delays. Receivers who receive the beam at a height are on scaffoldings or platforms, on mounting stairs. They keep the structure from contact with previously installed elements and deploy it in the right direction before installation. The correctness of lowering the beam is controlled by the coincidence of the risks of the longitudinal axis on the beam and the cantilever, as well as by the risk of the previously installed beam. Deviation from the vertical is eliminated by installing metal linings under the beam. The beam is temporarily fixed with anchor bolts.
When installing columns with milled soles on foundations, concreted to the design mark, or on planed metal plates, the position of the crane beams is adjusted only in the direction of the main axis.
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