Thanks everyone. So as a review here are the suggestions I received/gleaned:
•Use oversized manholes and have the inflow pipe be offset from center to allow the stormwater to swirl the inside of the structure
•Size your pipe so that it flows full thus dissipating the greatest amount of energy...
Project where a detention pond is approximatley 1300 feet horizontally and 100' vertically from the outfall. Our current concept is to use a series of drop manholes throughout the run to reach the outfall elevation (see attachment)
Some of the manholes will be 15' deep with the inflow and...
