To solve the problem wherein a countermeasure must be only taken with every job site due to prohibiting washing of working clothes by carrying back from the job site and coming-out of the job site while sticking dust of asbestos to the body of workers, particularly, in the prevention of diffusion of the toxic asbestos among thee dust generated at a disassembling site such as a work section and a building.

This invention provides an idea for a movable temporary building by condensing and unitizing the function corresponding the realization of obligation for preventing diffusion of the dust into a space equivalent to one parking garage, and even if an exclusive facility is not constructed with every job site, since carrying and installation are simple and repetitive use can be made, health damage to the workers and surrounding residents can be avoided.