ABSTRACT
When this article is written, University of Jember is conducting a development project for Integrated Laboratory Engineering Biotechnology. In building construction, good plumbing system planning is needed. For this reason, a study was carried out by comparing DED of the plumbing system with the results of calculations according to SNI 2015 based on the number of occupants. The building requires a water discharge of 550 L/minute or 792 m3 /day (based on SNI 8153-2015) and 620 L/minute or 893 m3 /day (based on DED Figure), while the wastewater discharge is 212 m3 /day. The diameter of the clean water used ranges from 2- 2.5 inches or 50-60 mm. The underground tank volume is 106 m3 and the roof tank is 40 m3 . According to DED Figure, the underground tank volume is 120 m3 and the roof tank is 45 m3 . The diameter of the wastewater pipe based on the minimum plumbing tool (SNI 8153-2015) ranges from 80-100 mm and the diameter of the vent pipe ranges from 80-100 mm. The calculation based on the DED Figure shows that the diameter of the exhaust pipe ranges from 100-125 mm, while the diameter of the vent pipe ranges from 80-125 mm.
