FIELD: methods and rigging for erecting bearing structures, primarily ceilings. SUBSTANCE: bearing structures are erected using form with adjustable profile of working surface involving installation and pre- stressing of reinforcing cage followed by its concreting. Cage pre-stressing is effected by deforming the cage-carrying form; cage is secured to form and to at least one of bearing construction elements being joined together. Adjustable-length struts of form engaged with form panel and rope are mounted for their displacement to different positions along form panel, and are provided with fastening members. Reinforcing cage is fixed to form panel ends and carrying member. EFFECT: improved carrying capacity of structures; enlarged functional capabilities. 3 cl, 6 dwg
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