Method of making single curved and double curved cups

摘要

The method of making single curved trays (1) and double curved trays (10) comprises: forming tray segments (2, 20) under controlled conditions, preferably in a precast plant; Breaking the shell segments (2, 20) by means of a breaking device (5) under controlled conditions, preferably in the precast plant, and transporting the pre-broken shell segments (2, 20) to a construction site, or transporting the shell segments (2, 20) to the construction site and pre-breaking the Shell segments (2, 20) by means of the breaking device (5) on the construction site; Placing a tire on a, preferably flat, base (7); Placing and arranging the shell segments (2, 20) on the tire; Arranging at least one flexible tension member on opposite side edges (9) of a base surface (8) of the single curved shell (1) or circumferentially on an outer edge (19) of the base surface (80) of the dual curved shell (10); Performing the shaping process, ie lifting and bending of the shell segments (2, 20) by blowing air into the tire and / or under tensile load of the at least one tension member.