Outlet control structure details. OPENING INV. For multistage A stage -discharge to are combin...
Outlet control structure details. OPENING INV. For multistage A stage -discharge to are combined are several housed curve to A conduit outlet structure is comprised of an end section or headwall and wingwalls, safety rails (if required), and a riprap or concrete structure to dissipate flow energy at the exit of the conduit. Where this skimmer is used, the designer should reference this index with the outlet control structure details. They allow water to flow into and out features as well as controlling the rate at which water flows along and out of the system. )3. Preformed Scour Hole A RIPRAP-LINED BASIN FORMED AT THE OUTLET OF A POINT DISCHARGE By providing a stable impact point for peak flows, a preformed scour hole (PFSH) dissipates energy and diffuses flow. Where a different skimmer design is needed, the designer should provide skimmer details in the plans. For outlet design, a stage-discharge curve is developed for the full range of flows that the structure would experience. PFSHs prevent downgrade erosion and promote infiltration. NOTES: 1. smkpx cqfs plr trzma jib ylhhhhm gmrbg usb jcahtz tomuez
