architecture
background
beam
build
builder
building
clamp
construct
construction
craftsman
demolition
engineering
equipment
facade
flat
gantry
girder
heavy
icon
illustration
industrial
industry
isolated
ladder
lift
lifting
line
linear
machinery
metal
overhead
pipe
plank
plate
platform
renovation
scaffold
sign
stage
steel
stepladder
structure
symbol
temporary
tool
tower
trestle
work
worker