Using AutoCAD to draw the layout of steel warehouse

How to use AutoCAD to draw the layout of the steel warehouse.

[@mpt2878]

very well explained!!! Just one question, how is the distance between columns, girts or purlins determined? I understand that would require calculations or other things, could you recommend where to look at or what normative to chose?
Thanks!!!

[@aymanelzohairy2490]

Please watch this video
th-cam.com/video/0EFoYyZB1Vs/w-d-xo.html

[@BA-gp7sr]

How come in the elevation view in the sloped part we see a V shape bracing while in the top view or plan view it is an x bracing