In fitting the above plates or bars, care should be taken
to avoid welding a single plate or bar to both flanges of a corrugation,
thus subjecting it as a strut to forces imposed by the squeezing and
stretching movements of the corrugation under load. This could buckle
or break the plate or bar, and could also initiate structural problems
(see paragraph 4 of the circular). To avoid this, plates or bars should
be welded as separate free-ended cantilevers to each corrugation flange,
as shown in the attached illustrative
diagrams. A separation of 150 mm between each two separate
cantilevers is suggested.