construction site. rebars, ferroconcrete, ceiling concrete, waterproofing and formwork

16x9 architectural architecture asphalt bar bars black blue brown building bush business ceiling civil clouds compression concrete construction development ecology engineering environment equipment ferroconcrete floor formwork foundation gray green industrial industry insulation iron masonry material mesh nature nobody nopeople paper pile project rebar rebars reinforce reinforced reinforcement reinforcing rod rusty shuttering side site sky slab steel strength structure summer sunny system tar technical technology tensile tension tree trees view wall waterproofing white wires yard yellow zone