architecture
assembling
assembly
build
city
close
component
connected
connector
constructing
construction
construction site
design
development
engineering
equipment
festival
frame
framework
grey
grip
industrial
industry
installation
iron
job
joined
metal
metallic
outdoor
pipe
platform
safety
safety equipment
scaffold
scaffolding
screw
security
service
site
stage
steel
strong
structure
support
technology
tool
tube
work
worker