Chamber selection - Groundwater - Delta Membranes

Chamber Selection – Type C Cavity Drain Systems

Not suitable for Surface water calculations or foul water calculations

Chamber selection - Groundwater

	Please add values
Basement m2 floor and walls	m2
Basement floor above or below water table
Depth of incoming pipe from underside of slab	mm
Static Head to (inlet of pump to high point of pipe)	m

Chamber height required	0 mm
Incoming flow rate	0 l/s

Pumps/Total head (l/s)	3.0	4.0	5.0	6.0	7.0	8.0	9.0	10.0	11.0	12.0
V3	2.2	1.8	1.3	0.7	0.0	0.0	0.0	0.0	0.0	0.0
V4	0.0	3.0	2.8	2.4	1.9	1.5	1.0	0.0	0.0	0.0
V6	0.0	3.7	3.3	3.0	2.7	2.4	2.1	1.4	1.2	0.4

Please note:

Any highlighted fields can be used but only the min chamber specification will be shown.
Pumps selection is based on optimum/ideal performance based on pump performance curve.
Pumps suggested are in Delta range (V3, V4 and V6).

Based on

Static Head set at 3m depth
Discharge is 50mm on all (2")
Less than a 10m horizontal run - anything over please call
0.1l/s per 100 m² of basement floor and wall area for basements above the water table
0.2l/s per 100 m² of floor and wall area for basements below the water table
Allow a safety factor of 5 when selecting a pump duty
If no amounts are highlighted please call us

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