Design &Construction Standards Manual Potable Water Main, Gravity Sanitary Sewer, Sanitary 456 Pages · 2017 · 27.38 MB · 521 Downloads· English. Preview The intent of this course is provide broad guidelines for the design and construction of sanitary sewer gravity lines based on all, the MD-RER regulations, the Gravity sanitary sewer design and construction : ASCE manuals and reports on engineering practice no. 60 wef manual of practice no. fd-5/ Prepared by the All materials and specifications shall be indicated on the plans. All gravity sewers must have granular bedding to a minimum depth of 4 inches under the pipe DETAILS OF DESIGN AND CONSTRUCTION 23.1 Minimum Size No gravity sewer conveying raw sewage shall be less than 8 inches (20 cm) in diameter. The sanitary sewer gravity system shall be designed to be straight between any manholes (i.e., no curved sections of gravity sewer between manholes shall beRevisions to Approved Plans. IV. COLLECTION SYSTEM. 1. Design. 2. Calculations. 3. Gravity Sanitary Sewers. 4. Protection of Potable Water Supplies. The following sanitary sewer system design guidelines are based on Standards for Wastewater Facility Construction: R.61-67. D. INFILTRATION. Gravity sanitary sewer design and construction : ASCE manuals and reports on engineeringpractice no. 60 wef manual of practice no. fd-5/ Prepared by the With its liberal use of charts, illustrations, and case studies, this practical manual is an indispensable resource for engineers in the field of sanitary sewer