Gimbal close-up shot of construction worker using a wrench and sledgehammer to tighten steel nuts and bolts at a modular building site in West Los Angeles, California

construction worker construction crew sledgehammer industrial wrench construction site modular construction bolt tightening nuts and bolts modular housing steel bolts mallet module installation modular unit modules on demand homes steel frame building frame prefabricated steel builders power tools safety operations subcontractor steel workers prefabricated housing housing development site prefabricated units site supervisors residential development affordable housing modular homes building site building crew general contractor building design roofing turnkey build structural build prefab equipment prefab units home build los angeles southern california 4k 60 fps gimbal shot slow motion shot closeup shot