abstract background geometry material metal metallic pattern patterns regular rust rusty steel structure structures surface texture textures wave waves wet construction diamond diamond plate industrial iron non-skid oxidation oxide plate rusting aged boxcar decay grunge oxidized paint peel peeling rivet rivets seam weathered arrows shiny bar blue building cladding orange pink red brown corrosion doom ferrous grain grey oxidise quake rough angles appearance beams below beneath bridge concrete deck girders light lower lower-deck perspectives piers pillars reflections secure solid strength strong surfaced surfaces textured thick under undercover water builders tools concrete surface construction site left alone old remaining rusted rusty metal shadow Wheel Barrow workplace