For example, I can add my brother as my companion now, and after our flight, change my companion to my sister and add her as a companion on a ticket. After the flight with my sister, same /same â I can then change my companion and book the next companion ticket.
Architectural drawings are made according to a set of conventions, which include particular views (floor plan, section etc.), sheet sizes, units of measurement and scales, annotation and cross referencing.
A plumbing drawing, a type of technical drawing, shows the system of piping for fresh water going into the building and waste going out, both solid and liquid. It also includes fuel gas drawings. Mainly plumbing drawing consist of Water supply system drawings, Drainage system drawings, Irrigation system drawings, Storm water system drawings. In water supply system drawing there will be hot water piping and cold water piping and hot water return piping also.