Roof structure of steel for building or house construction on sky background.
Palabras clave
1,
roof,
structure,
steel,
architect,
engineer,
material,
construction site,
industry,
built structure,
metal,
building,
sky,
architecture,
assembly,
working,
frame,
welder,
men at work,
business,
exterior,
technology,
truss,
construction,
construction industry,
design,
house,
iron,
outdoors,
pattern,
background,
roof beam,
beam,
composition,
downtown,
engineering,
factory,
hard hat,
horizontal,
installing,
occupation,
project,
property,
rain,
real estate,
residence
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