ado forge steel labor labour metal object spanner tool work works forge steel metal re auto automobile car exhaust flash maintenance man mechanic repair solder soldering sparks working angles architecture bricks brickwork building building-construction building-site building-work construction construction-site construction-work development elements exterior external framed frames home home-units house light linear lines metal-work modern perspectives sky straight structure style suburban urban views wall walls window-frames windows building work construction work dust protection facade metal work pipes railing rails safety safety mesh scaffold scaffolding steel scaffolding white mesh angled crane danger greyscale height high steel-scaffolding tall building construction construction sites cranes heights concrete engineer engineering foundation hard hardness infrastructure progress rubble strong tough winch worker background iron master pillar planning power processing texture gear