Changes

Jump to: navigation, search

Hand auger - general

401 bytes removed, 01:22, 1 June 2012
no edit summary
==Suitable conditions==
Augers can be used up to a depth of about 15-25 meters, depending on the geology.
 
{{procontable | pro=
- Easy to use above the groundwater table <br>
| con=
- It may be very difficult to remove the temporary casing. If clay layers are penetrated, it is very difficult to use a temporary casing, as it sticks to the clay. <br>
- The borehole does not stay open if a collapsing sand layer is encountered below a clay layer (through which the temporary casing could not penetrate)
}}
{| border="1" cellpadding="5" cellspacing="0" align="center"
Akvopedia-spade, akvouser, bureaucrat, emailconfirmed, staff, susana-working-group-1, susana-working-group-10, susana-working-group-11, susana-working-group-12, susana-working-group-2, susana-working-group-3, susana-working-group-4, susana-working-group-5, susana-working-group-6, susana-working-group-7, susana-working-group-8, susana-working-group-9, susana-working-group-susana-member, administrator, widget editor
30,949
edits

Navigation menu