Staircase filter section plans are given in this 2D AutoCAD DWG drawing. Sectional details are clearly given in this drawing file. Bolts, holes, and section details are given in this DWG file. This Cad drawing file is very useful for civil engineers and structural engineers. Download the AutoCAD 2D DWG file. Thank you so much for downloading the DWG file from the cadbull website.