Duct extraction corrupted air at basements
Drawing labels, details, and other text information extracted from the CAD file (Translated from Spanish):
column cms., extraction line, hollow, exhaust duct hollow, crossbar, esc., basement, lock perimeter, basement, the section caliber of imsa similar, head lock, axial extractor see plan, concrete retaining wall of cms. of thickness, firm concrete in polished finish frames with reinforcement with welded wire mesh of cms. of thickness.