Crimp Curving

Crimp curving is applicable to all profiles, but it is most suited to trapezoidal profiles.

Crimp curving is produced by pressing a small crimp in either the tops of the ribs or the pans of the sheeting, progressively shortening it at these points and thereby causing it to bend. The radius can be altered by the spacing of the crimps and the angle of the bend by the number of crimps.

As crimp Curving is normally done with G300 steel or H34 aluminium, the lower yield strength of these materials must be taken into account when setting purlin spacings.