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Healthcare Provider Information |
Address:
Garrett Co. Health Dept.
1025 Memorial Drive
Oakland, MD 21550
Main Phone:
301-334-7777
or 301-895-3111
FAX: 301-334-7701
See department pages for individual phone numbers
E-Mail Webmaster
Stand Pipe System
(use on slopes)
- Standpipe systems are recommended when large amounts of drainage trench are required.
- It is important to have sufficient drop in the line from the tank to the first standpipe to prevent the back up of effluent into the tank before the effluent can flow through the standpipe outlet.
- Standpipes should be positioned to insure that sewage fills both lateral drainage trenches before sewage overflows into the next standpipe.
- Standpipes should be constructed of 8-inch Schedule 40 pipe or precast concrete. (Plastic boxes are also available.)
- Standpipes may be flush with the ground or if extended above grade, should extend a minimum of 8 inches.
- Standpipes should have a watertight cap that can be removed to conduct inspections.
- The bottom of the standpipe outlet should be installed one inch lower than the bottom of the standpipe inlet.
- The top of the lateral lines should be installed 2 inches lower than the bottom of the outlet pipe.
- Five feet of solid pipe surrounded by packed clay should extend out the lateral sides of the standpipe before the use of perforated pipe begins. Under no circumstances should gravel be used in this section of the trench.
- Laterals must be separated (center to center) a minimum of 8 feet. (10 feet is recommended).