These two fellas were laying a new piece of storm drain, all by hand!
The guy in the green shirt had just walked backwards slowly down the hill with that piece of pipe in front of him while the other guy was completing the trench.
They were connecting to a 12" dia. pipe at the upper end and to a 6" pipe at the lower end. Just imagine what the water will look like coming out of the downstream end of that 6" pipe!
GET 'ER DONE!
Well, if you think about it, the farther the water travels down the 12" pipe, the faster the velocity. Therefore the water takes up less space in the pipe so the 6" on the downstream end would be sufficient. They may even be able to put a fire hydrant on the lower end. 🙂
Thanks for sharing
When that 6in pipe clogs, there is not going to be any flow.....
In Yreka, Ca, they have a storm drain that starts at 30" at the top of the hill and ends up in a 12 inch in town where the slope flattens.
During storm events, stormwater actually comes out of the DI's in the bottom part of the system instead of into them.
Came that way because the original town was built at the bottoma and expanded up hill. New areas had larger pipes, but the older, downhill sections were never upgraded.
