area
armature
building site
civil engineering
concrete
construction
corrosion
crane
device
earth mover
edifice
engineering
equipment
excavator
grid
heap
industrial
industry
instrument
level
marker
measure
mesh
metal
modern
optical
parallel
pattern
pile
piled up
pillar
quadratic
rebar
reinforce
reinforcement
rod
rust
rusty
site
square
stack
steel
stock
stockpile
structure
supply
surveying
tractor
tripod
truss