Workers install concrete floors. Construction works.
Construction worker sawing metal by a circular saw. Lots of sparks.
Construction works. Concrete slab. Panels.
Metal roof inside the hangar. Large room with a tin roof. Metall constructions.
Workers on a construction site. Masonry walls.
Construction. Formwork for concrete.
Construction works. Interior. Hall.
Covering the roof with roofing material.
Masonry walls of the foam block. Airblock.