¤  Fixture unit load calculations
¤  Establish sewer loads
¤  Establish main pipe size & co-ordinate stub locations with civil
¤  Expansion loops for seismic requirements
¤  Check contour drawings to establish ground cover for sewer lines
¤  Research slope requirements
¤  Establish invert levels
¤  Vent sizing and routing
¤  Research requirements for grease/sand interceptor
¤  Specify sanitary fixtures
¤  Under and above grade pipe routing
¤  Roof drain calculations
¤  Locate rain water leaders
¤  Trench drains
¤  Sump pump sizing and location