1. Sketch /draw plan
Draw the staircase plan in CAD,CAD software for mechanical design uses either vector-based graphics to depict the objects of traditional drafting, or may also produce raster graphics showing the overall appearance of designed objects. However, it involves more than just shapes. As in the manual drafting of technical and engineering drawings, the output of CAD must convey information, such as materials, processes, dimensions, and tolerances, according to application-specific conventions. The file will exporting from CAD format into PDF and send to the architect, engineers and the building contractor.