• Rough brick arches - brick used not wedge shaped, curve shape obtained by varying mortar thickness. The joints are wider at extrados than intrados.
• Axed brick arches in this bricks are cut wedge shaped, thickness of joints are 3mm to 6mm. In this bricks cut by means of a brick axe.
Gauged brick arches -Accurately dressed wedge shaped bricks are used, mortar joints are are 1.6mm. In this bricks cut by means of a wire saw.
