24. Force Main Design. - WSSC Water
b) AWWA C900 PVC. May be used for force mains in diameters 12-inch and smaller as an alternative to DIP if the PVC pipe meets the external load and internal pressure requirements, as stated in this section. (1) Pipe dimension ratio for AWWA C900 PVC. The use of PVC for force mains is limited by
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24. Force Main Design. - wsscwater.com
www.wsscwater.comPart Two, Section 24. Force Main Design SEWER DESIGN GUIDELINES 2008 S-24.5 e. Hydraulic Design of Force Mains. 1) Guidelines for hydraulic design of force main are as follows: a) The design of a sewage force main must be coordinated with the design of the wastewater pumping station. ...
Unregulated Contaminant Monitoring Rule - wsscwater.com
www.wsscwater.comUnregulated Contaminant Monitoring Rule 4 Manganese 26 µg/Lb 0.4 300 Manganese 4.5 µg/Lb 0.4 300 NOTES a Water treatment plant finished water sample b µg/L = parts per billion (ppb). The equivalent of one minute in 2,000 years or one penny in $10 million
3. Pipeline Crossings and Clearances. - wsscwater.com
www.wsscwater.comPart Three, Section 3. Pipeline Crossings and Clearances COMMON DESIGN GUIDELINES 2015 C-3.4 a) If both pipelines are 36-inch and smaller diameter, provide a minimum of twenty (20) feet
Three Part, Section 4. Buoyancy of Pipelines ... - WSSC Water
www.wsscwater.comThree Part, Section 4. Buoyancy of Pipelines COMMON DESIGN GUIDELINES 2008 C-4.5 Where: Wt = resultant buoyant force of the submerged pipe, pounds per linear foot wI = average unit weight of inundated backfill, pounds per cubic foot Bc = outside pipe diameter, feet HI = depth of inundated backfill above top of pipe, feet HIm = minimum depth of inundated backfill required …
15. Pipe Slope and Manhole Distance. - WSSC Water
www.wsscwater.comsee Sketch "T" and Part Two, Section 16 (Manhole Channel Design) or design a manhole drop connection at the manhole, see Part Two, Section 16 (Manhole Drop Connections). 2) If the slope cannot be reduced, specify AWWA C900 PVC pipe, see the Specifications for 12-inch and smaller sewer pipelines.
27. Thrust Restraint Design for Buried Piping.
www.wsscwater.comDesign for Unbalanced Thrust for Buried Water Conduits, Charles A. Manganaro, see pages 705 to 716, Journal AWWA, June 1968. (b) Do not use a design concept based on bearing capacity. (c) For blocks in cohesive soils, evaluate the soil resistance in terms of short and long term
PIPELINE DESIGN MANUAL 2017 - WSSC Water
www.wsscwater.comApr 19, 2017 · requirements, appurtenances, specifications, materials, hydraulics, etc. This manual is a design guideline that shall be followed and used in conjunction with the WSSC Standard Details for Construction and the WSSC General Conditions and Standard Specifications. It is
12. Allowable Joint Deflections. - WSSC Water
www.wsscwater.com14-inch and over 0.83 feet 02°-24' (2.4°) 480 feet 3) For maximum joint deflections for full-length PVC pipe with push-on type joints on pipelines which are 12-inches and smaller in diameter, see Table "3.1". The maximum deflection angle in Table "3.1" is used for design and is based on seventy (70%) percent of the recommended
17. Manhole Channel Design. - WSSC Water
www.wsscwater.comcrowns of the different diameter pipes. For sewer pipelines larger than 27-inch diameter, with 12-inch and smaller laterals entering the manhole, design the laterals by matching the invert to or above the crown of the larger pipe to prevent flow from the larger pipe entering the smaller pipe. Determine hydraulic losses to verify the design.
3. Pipeline Crossings and Clearances.
www.wsscwater.comutilities and structures (manholes, inlets, vaults, poles, etc.). 2) Provide the following minimum separation when a water/sewer pipeline is parallel or adjacent to existing or proposed buildings or dwellings: ... Any other critical utility identified on a case by case basis such as electrical ductbanks, etc. ...
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