This paper analyzes and discusses the spatial geometric model and flatness detection method, and puts forward a general method for measuring spatial size and flatness with conventional instruments and tools.

Author: Luoyang Tongsheng Road Construction Co., Ltd.

Keywords: geometric dimensions of spatial model flatness

Classification number: TU 198

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1 Project Overview The internal space of an aviation laboratory is about: length× width× height =32m× 17.8m× 16.4m, and the walls and floors are assembled from 1m× 1m metal plates, with five walls at the top. Wherein a metal framework is arranged in the joint of the metal plates, and the metal plates are fixed on the framework. The design has strict requirements on the specific size of the space surrounded by metal plates and the flatness of each metal wall. During the test,