Steel structure fire escape staircase design C-shaped steel beamsThe steps are made of Checkered Plate.
STL (Stereolithography, filesize: 824 KB), OBJ (OBJ, filesize: 1.13 MB), FBX (Autodesk FBX, filesize: 3.68 MB), DXF (DXF, filesize: 15.6 MB), SKP (Sketchup, filesize: 3.46 MB)