SEWAGE DEPARTMENT TRAINING PROGRAM
How an Elevated Sandmound Works
Finally, while most elevated mounds are rectangular in shape and have parallel pipes of even length, this is not always the case.
Irregular shapes such as trapezoids, L-shape, and triangles have been constructed usually in areas where isolation distances (from wells, property lines, etc.) restrict the placement of a typically shaped system.
Piping may be off-set or irregularly spaced in certain circumstances.
Off-set manifold with laterals longer on one side than the other.
Laterals with alternating length.
