About Sequence of Laying
The direction of laying the sheets should be such that the exposed side laps face away from the instal2prevailing wind.
Wherever possible it is preferable to use single lengths of sheeting from ground to eaves or from eaves to ridge.
Where end laps are necessary, the sequence of laying the sheets is as shown in the diagram.
http://www.fao.org/3/s1250e/S1250E0l.htm
https://wikivisually.com/wiki/Metal_fabrication
https://www.wikidata.org/wiki/Q11427
https://en.wikipedia.org/wiki/Steel
See also Portfolio outdoor lighting and affordable glass