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Gravity Sewer Design: 

Velocity (V) - Arch Pipe
  • Calculate the velocity (V) of gravity flow in an arch pipe.
Velocity (V) - Round Pipe
  • Calculate the velocity (V) of gravity flow in a round pipe.
Flow (Q) - Arch Pipe
  • Calculate the flow volume (Q) of gravity flow in an arch pipe.
Flow (Q) - Round Pipe
  • Calculate the flow volume (Q) of gravity flow in a round pipe.
Slope (S) - Arch Pipe
  • Calculate the energy grade line slope (S) required to produce a flow volume (Q) in an arch pipe.
Slope (S) - Round Pipe
  • Calculate the energy grade line slope (S) required to produce a flow volume (Q) in a round pipe.
Minor Losses
  • Calculate the minor losses of a pipe under gravity flow conditions and pressure flow conditions.  Minor losses are used to check sewer system surcharge.
Storm Drain Inlets
  • Calculations for the design of storm drain inlets. Solve calculations for curb inlets, slotted inlets and grade inlets under a variety of flow conditions.
Trench Load - Rigid Pipe
  • Calculate the load on rigid pipe from trench backfill over the pipe.
Trench Load - Flex Pipe
  • Calculate the load on flexible pipe from the trench backfill over the pipe.
Distributed Load - Pipe
  • Calculate the load on a pipe resulting from a distributed load at grade above the pipe.
Concentrated Loads - Pipe
  • Calculate the load on a pipe resulting from a point load at grade above the pipe.
Design Problem 1
  • Calculate the capacity of an existing 18" concrete stormsewer pipe. Determine the required concrete pipe diameter to carry 18 cfs. Determine the required diameter if the pipe was PVC..