We have proposed storm water pipes with perforations on Top half of the pipe periphery. The ground water table is below the pipe profile and with a minimum separation distance of 1.5m. The only source for infiltration is due to extensive landscaping water percolating into ground. How do I input an infiltration rate (say 10% of landscaping demand) along the SW pipe routing. Similarly, how do I model the ground water infiltration rate from pond storage with a separation distance of 1.5m between Pond bed and water table underneath it.
regards,
MHD
Hello,
Which product are you using? SewerGEMS? Which solver are you currently using?
Mohthesham Mohammed said:How do I input an infiltration rate (say 10% of landscaping demand) along the SW pipe routing.
You can specify infiltration rate along the length of the pipeline by choosing "Infiltration Load Type" to be "Link Length" in the conduit properties and specify the unit rate.
Mohthesham Mohammed said:Similarly, how do I model the ground water infiltration rate from pond storage with a separation distance of 1.5m between Pond bed and water table underneath it
Is this ground water infiltration to the pond? The pond has infiltration / seepage methods that deal with seepage from the pond.
Using the Average Infiltration (Seepage) method for ponds
If you want to account for groundwater you will have to use the Explicit SWMM Solver in SewerGEMS / CivilStorm and use SWMM Extensions to model this. See the below article for more details;
How to model aquifers in SewerGEMS and CivilStorm using the SWMM solver
Let me know if this helps.
Regards,
Yashodhan Joshi