bar
bend
building
bundle
construct
construction
corrode
corrosion
corrosive
decay
design
detail
dirty
frizzle
gray
grunge
hard
industrial
industry
infrastructure
iron
light
line
material
metal
metallic
old
outdoor
parallel
pattern
pile
pole
post
rail
reinforce
rigid
rod
rust
rusty
shadow
shape
site
stack
steel
strength
strong
structure
sturdy
style
sunny
texture
wire