Arches are usually constructed with the aid of a temporary form which carries the dead load until the arch has cured and is able to support itself and the other imposed loads. Forms should remain in place a minimum of 10 days after all masonry work to be supported by the arch is completed.
Complete filling of all mortar joints is critical. The joints are vital to maintain the wedging effect of the arch. Any movement caused by the slightest sliding, settling or rotating of the abutments, supports or the arch itself may result in failure. Three conditions must remain constant for a successful arch:
-
Length of the Span
- Elevation of the Ends
- Angle of the Skewback
Orders for special brick shapes needed for construction should be placed with the brick manufacturer at the start of the job. Detailed drawings, preferably full size of half the arch, should accompany the order. |
|
