SPIRAL STAIRCASE 2D Y 3D IN FORGE WITH BASED ON ANGLE 1
Drawing labels, details, and other text information extracted from the CAD file (Translated from Galician):
Floor, Slab, tube ced m. pza, m pza, solera m. pzas, solera, solera m. pzas, m pza, pzas pzas, Tube