Steel Curved Roof Construction Details

Vertical seam panels unless hand formed or customer curved do not work real well on concave or convex surfaces.

Steel curved roof construction details.

Roller bending involves progressive bending of a section by passing the member through a set of bending rolls. When installing the metal panels shown in this booklet over a curved arch the minimum. Every once in awhile someone asks me about putting metal on a roof that is either round or else has a concave or convex curved roof up the rafter like a bell shape. Whether the arched roof will be installed over a solid deck or open framing mbci has a panel that fits the application.

Metal should not be re bent once it has been formed nor should it be folded back on itself. If a sheet must be bent a gentle 90 degree bend is the maximum recom mended. Curved roof fascia systems when you want to add a metal curved roof or fascia to your design mbci offers the choice in three distinctive and complete panel systems for your use. Bending and bowing aluminum and steel roofing and siding sheets are rollformed from hardened tempered metal for maximum strength.

The rolls are shaped to the cross section of the steel member being curved see figure 3 1. When a metal roofing sheet must be installed on a curved roof screws should be installed at every overlapping rib at the sheet ends to resist the natural tendency of the metal to spring back. The majority of curved steel for use in construction is curved by roller bending which is a cold process. When curving the beams the curvature had to make a complete 180 degree rotation.