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Posted: Wed Aug 15, 2007 2:15 pm
by Tim W
I realise that this is probably a really dumb question, but why do some perforated or slotted pipes have holes all the way round? Doesn't the water just dribble out of the bottom?
I know I'm missing some important land drainage concept here - can someone help?
Thanks, Tim
Posted: Wed Aug 15, 2007 5:33 pm
by lutonlagerlout
do they? i have only come across the ones with the slots on 1 face,i suppose if you were trying to let water run into the ground holes all round would work better,say the overflow of a septic tank for instance
maybe Flowjoe can tell us?
LLL
Edited By lutonlagerlout on 1187195615
Posted: Wed Aug 15, 2007 8:30 pm
by islander
Water takes the path of least resistance, which is the inside of the pipe. Technically, the hydrostatic gradient keeps the water inside.
Posted: Wed Aug 15, 2007 9:27 pm
by andpartington
if the holes where just on the top it would not be as easy to lay
andy
Posted: Thu Aug 16, 2007 12:24 am
by matt h
pipes can be laid with perforations at top or bottom dependent on intended use. see main site. pipes with perforations all round are mostly for land drainage:)
Posted: Sat Aug 25, 2007 3:07 pm
by Tony McC
In a properly constructed land drain, the pipe is simply an "expressway" for carrying water at times of peak flow. Under 'normal' conditions, most of the water would actually flow through the pipe bedding beneath the pipe. This is discussed on the main website here along with the rerasoning behind pipes with holes to one side only.
Posted: Wed Aug 29, 2007 1:47 pm
by Tim W
Thank you all
Tim