Sewergems inflow and Infiltration ( 3L/s/ha)

Hello Hamid, 

Similar forum post of yours was answered an year ago on this topic, please go through it as below. 

Sewergems Infiltration (L/s/ha) 

Hi Sushma,

But it doesn't answer my question directly.

I don't want to go through the RTK method, however, I am not clear on the loadbuilder method.

Does it consider the load just for inflow or infiltration? as I don't want to apply the peak factor to the I&I loads.

Please advise.

Thanks,

Hamid

Hello Hamid,

You would use LoadBuilder in this case, as I mentioned in your other forum thread. 

All you would need in this case is your polygon shapefiles along with a Thiessen polygon which you can generate using the Thiessen polygon tool.

When selecting the Projection by Land use method, you would select your Thiessen polygon as the Service Area Layer, select your polygon shapefile for the "land use layer", then enter 259200 L/ha/day (3 L/ha/s) as the Load Density. You shouldn't need to set up a land use field since you'll be using the same load density for the whole polygon shapefile. LoadBuilder will then overlay your polygons with the Thiessen Polygons and distribute the load to the manholes that correspond with each service area layer (Thiessen Polygon), based on how much area overlaps with the respective service area layer. See the illustration at the bottom of this article: How do each of the Loadbuilder methods work?

LoadBuilder will always import pattern-based sanitary loads (base flow + pattern). At the end of the LoadBuilder process, you can choose to assign a specific pattern to the imported loads if you wish. "peak factors" typically refer to the use of an extreme flow method with unit loads during a steady state with the GVF-Convex (SewerCAD) numerical solver, so those would not interfere here. There shouldn't be a problem with this I&I being imported as a "sanitary load", but if you need to see it categorized under the Inflow collection (instead of the sanitary loads collection), you may be able to copy/paste from the Sanitary load Control Center to the Inflow Control Center.