looking for scour velocity threshold for concrete
looking for scour velocity threshold for concrete
(OP)
YAR! designing a debris deflector structure for a very steep stream. bed grades along the base of the deflector in the order of 15%. It is a constant flow stream and I am concerned about scour of a concrete slab proposed for the creek bed. I'm fishing for advice on permissible velocities vs concrete properties for continous flow conditions. There are a lot of papers around but they all seem to deal with short term scour potential under peak velocities during flood events. I'm worried about the day to day trickle flow over 50 yrs or so.





RE: looking for scour velocity threshold for concrete
RE: looking for scour velocity threshold for concrete
You may want to consider one or more of the following methods to reduce the erosion:
- reduce the amount of sediment by trapping it
- reduce the velocity to perhaps 5 feet per second or less
- increase the durability of the concrete
- increase the thickness of the concrete, especially the cover over the steel
RE: looking for scour velocity threshold for concrete