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A standard complete vehicle plant project for passenger vehicles includes four major workshops (stamping workshop, body workshop, general assembly workshop and coating workshop) and some auxiliary buildings. The workshop building is high with wide span. Four major workshops use steel structures, steel columns and steel grids and provide the flexible space adaptable to constantly changing processes. Wherein, the roof of coating workshop and body workshop involves multiple openings and consequently high water-proof requirements, so that the flexible coiled material roof system will be selected in most cases; for the general assembly workshop and stamping workshop, the more economic rigid Double-skin cladding systems with thermal insulation will be mostly used for the walls of these four major workshops. The three-coordinate measuring rooms in auxiliary buildings require constant temperature and humidity.