Wellpoints
IGE-81 wellpoint system - how to install
Wellpoint system installation
Wellpoints are installed (set) in soil using the water jetting method with jetting pipes connected to a water jetting pump or hydrant. The IgE81 wellpoint system set contains two types of jetting pipes (casing pipes):
- small diameter D 51 mm,
- large diameter D 133 mm.
with varying lengths in order to facilitate jetting into different depths.br>
Jetting pipe 51 (item 13) is used to install wellpoints in soils which do not require filtration sand filling to be used, and jetting pipe 133 (item 16) is applied to jetting wellpoints in cases when it is necessary to use sand filling.
Filtration sand filling shall be carried out in:
- interbedded soils (containing impermeable layers) up to the height sufficient for sand filling to interconnect all drained soil layers; most often, however, along the whole height of wellpoint jetting.
- " homogeneous dusty soils, up to a height of about 0.5 m above upper filter edge (in practice 2 buckets of sand filling).
Graining of filtration sand filling shall be selected depending on the soil in which the filter is to be set, according to the following rule:
SFGC/SGC = beetween 5 and 10
where:
SFGC = average sand filling grain coarseness,
SGC = average soil grain coarseness.
Wellpoints shall be installed every 1m along a predetermined line, ensuring that all filters within the indicated wellpoint line (connected to a single pump) are at one level.A team of 4-5 trained workers is required to install wellpoints at the construction site.
More informations in user's guide which can be downloaded from this site.
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Company "Klaudia" is manufacturer of aluminium wellpoint
systems for dewatering "IGE"
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