Drainage Systems have several basic parts.
Water entry is the process where water enters the Drainage System. This done with water entering drain pipe through a French Drain. Water flows to a low area with a trench. In the bottom of the trench is a Perforated French Drain Pipe with a liner or a soc. Gravel or crushed limestone fills the trench on top of the French Drain Pipe.
Water can also enter a Drainage System through a Surface Drain. Water flows to a Drainage Basin, falls through the grate and enters the Drainage Pipe below.
Water Transition is moving water through Drain Pipe to the Exit Point.
Exit points are either Pop-Up Emitters or Curb outlets.