PROBLEM TO BE SOLVED: To deal with construction of any structure with wall surface shape of curved surface or planar shape.;SOLUTION: A construction apparatus comprises: a blowing nozzle 11 capable of spraying concrete or mortar; and a backing mechanism 40 including bendable arm members 42, 43, and a backing member 70 which is supported by the arm members 42, 43 and has a setting surface A facing the blowing nozzle 11 bendable with the bending of the arm members 42, 43.;SELECTED DRAWING: Figure 4;COPYRIGHT: (C)2019,JPO&INPIT
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