The positioning of sinks and water draining equipment is a critical consideration. The idea of incorporating drainage into design is quite foreign to designers; however the specification of water draining units important to keep quantity of Above Ground Units low. Pipe work cannot cross walkways or door openings, also pipe work buried in concrete slabs must have rodding eyes, and pipe work under concrete slabs (sometimes in older establishments) should be able to be cleaned from above. Grease Traps should be floor mounted with access for cleaning.

The process for cleaning Grease Management Systems and access should be an important consideration.