I haven't forgotten that. Those pipes are probably adequate for draining Boyztown and a small section of second road. The next two streets have something similar.Originally Posted by gerefan2
However, if we're designing a drainage system to prevent floods in ALL of South Pattaya and if we make the assumption that gravity requires the drains to flow to the sea, in the event of extreme rain, then by the time we get to this part of town, they would need some major drains, several metres in diameter. That's because they are moving water from further inland.
The photos of flooding and occasional reports of one new drainage system merely moving the water to flood another area seems to be proof that they don't have any suitably sized drainage for storms.
I presume it can't be that difficult to consider worst case flood depths and take into account the duration of rain to get that, which gives us a volume ow water per hour to be drained off. Then calculate the required size of drains and holding ponds to deal with that, plus a safety margin. Civil Engineers specializing in drainage ought to be all over that, otherwise there is no point in having experts.
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