Offset pivot hinges are the standard type of hinges on almost all aluminum storefront doors today.
Typical configuration would consist of one offset pivot hinge at the top of the aluminum storefront door, "which locks into the frame header" and one offset pivot hinge at the bottom of the aluminum storefront door, "which attaches to the bottommost part of the aluminum storefront door jamb".
Since the aluminum storefront door with its glass installed can exceed over 100 pounds in weight the offset pivot hinge is preferred, becuase all the doors weight is transferred to the concrete or finished floor.
It is still possible to get butt hinges from most vendors and if you need them www.StorefrontDoors.NET offers butt hinging at no additional charge.
For oversized doors it is recommended that you have an intermediate hinge installed to support the weight of the doors, especially if your new doors have double pane glass installed. Aluminum storefront doors are considered oversized if they're any size other than standard.
Offset Pivot Hinges
