Perforated pipes - Why holes all the way round?

[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

[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

[islander]

Water takes the path of least resistance, which is the inside of the pipe. Technically, the hydrostatic gradient keeps the water inside.

[andpartington]

if the holes where just on the top it would not be as easy to lay

andy

[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:)

[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.

[Tim W]

Thank you all

Tim