Up until today I have been annoyed by the depth of grids on Pattaya Tai, today its been resurfaced with 4 inches of tarmac which is great, but it makes me wonder, next time it rains heavy where is all the water going to go now they have tarmacked over the offending grids

I remember some 20 years ago, a huge culvert for a storm drain, being constructed along the length of Pattaya Thai, you could have literally have driven a double decker bus down there, it was a major infrastructure project at the time, the grids mentioned, allowed the storm water to drain through. I think the culvert has been progressively ineffective over the years, as silt has been allowed to accumulate due to lack of maintenance, contributing to flooding problems in the area. but covering them in tarmac beggars belief.

Pave all then cut out tar over drains.

Weld grates in at new level?

Pave all then cut out tar over drains.

Weld grates in at new level?

Yesterday I noticed some rectangular markings on the new tarmac - so maybe this is what they are doing.

Pave all then cut out tar over drains.

Weld grates in at new level?

Firstly, you have to find them, then weld to what ?

The first job should have been to raise them to the new expected finished level in a rebated reinforced concrete plinth surround, the new tarmac topping should then be laid flush with these.

Pave all then cut out tar over drains.

Weld grates in at new level?

Yesterday I noticed some rectangular markings on the new tarmac - so maybe this is what they are doing.

They already reinstalled the first storm drains, starting from second road up to Tukcom.

However, they just laid them on top of the new tarmac which ENSURES they will sink 1-2 cm over the next weeks to come...

Pave all then cut out tar over drains.

Weld grates in at new level?

Firstly, you have to find them, then weld to what ?

==>They will be as obvious at nips in a wet t-shirt contest.

Weld to existing iron base.<==

The first job should have been to raise them to the new expected finished level in a rebated reinforced concrete plinth surround, the new tarmac topping should then be laid flush with these.

I've never seen it done that way.

For good reasons.

You have never actually worked on an asphalt paving job, right?

Pave all then cut out tar over drains.

Weld grates in at new level?

Firstly, you have to find them, then weld to what ?

==>They will be as obvious at nips in a wet t-shirt contest.

Weld to existing iron base.<==

The first job should have been to raise them to the new expected finished level in a rebated reinforced concrete plinth surround, the new tarmac topping should then be laid flush with these.

I've never seen it done that way.

For good reasons.

You have never actually worked on an asphalt paving job, right?

Could you please explain thew way you would have done it.

Pave all then cut out tar over drains.

Weld grates in at new level?

Firstly, you have to find them, then weld to what ?

==>They will be as obvious at nips in a wet t-shirt contest.

Weld to existing iron base.<==

The first job should have been to raise them to the new expected finished level in a rebated reinforced concrete plinth surround, the new tarmac topping should then be laid flush with these.

I've never seen it done that way.

For good reasons.

You have never actually worked on an asphalt paving job, right?

Could you please explain thew way you would have done it.

Sorry, it's the weekend already and TV's resident Pattaya road repair experts are out playing golf (or balloon chasing).

Please check again on Monday.

Thanks for playing.

Sorry, it's the weekend already and TV's resident Pattaya road repair experts are out playing golf (or balloon chasing).

Please check again on Monday.

Thanks for playing.

Actually if you check back over some of the past discussions about building works along Beach Road over the years, there have been some contributions from TV members who appear to have been engineers in their previous lives. They might not have laid roads but they are able to work things out from first principles, so not similarly possible here?

Sorry, it's the weekend already and TV's resident Pattaya road repair experts are out playing golf (or balloon chasing).

Please check again on Monday.

Thanks for playing.

Actually if you check back over some of the past discussions about building works along Beach Road over the years, there have been some contributions from TV members who appear to have been engineers in their previous lives. They might not have laid roads but they are able to work things out from first principles, so not similarly possible here?

But what point their wisdom and experience when even road repairs in Thailand are 'different'? We pretty much have a handle on how it is handled in UK, US, Norway, New Zealand or wherever but this is LOS. I guess discussing what different countries do is illuminating and gives people something to do but doesn't make living with the perpetual Pattaya cock-ups any easier.

Pave all then cut out tar over drains.

Weld grates in at new level?

Firstly, you have to find them, then weld to what ?

==>They will be as obvious at nips in a wet t-shirt contest.

Weld to existing iron base.<==

The first job should have been to raise them to the new expected finished level in a rebated reinforced concrete plinth surround, the new tarmac topping should then be laid flush with these.

I've never seen it done that way.

For good reasons.

You have never actually worked on an asphalt paving job, right?

Could you please explain thew way you would have done it.

Sure.

See post #3.

Dear papa al,

Please see my final explanation of the grill saga, I hope it goes some way as to setting out the recognized standard practice of the installation metal drains,

These metal gratings are the are the drainage points and access to a very large culvert, as I previously described, and as such have to be removed for the purpose of clearing out accumulated sand and silt either by suction hose or dragged drainage buckets.

These gratings have to sit on a concrete base, within a concrete apron, and be able to be lifted out for culvert maintenance purposes, and then replaced, the new extended height concrete aprons have to be formed prior to any tarmac resurfacing.

I fail to see how they can be welded to anything.

I fail to see how they can be welded to anything.

It's the way they do. I saw them last night. They build a square metal frame that they weld to the grid, at a certain distance under the grid. The distance is calculated so that when the frame lays on the concrete support, the grid is at the street/tarmac level. Doesn't seem bad on those they already made.

Dear papa al,

Please see my final explanation of the grill saga, I hope it goes some way as to setting out the recognized standard practice of the installation metal drains,

These metal gratings are the are the drainage points and access to a very large culvert, as I previously described, and as such have to be removed for the purpose of clearing out accumulated sand and silt either by suction hose or dragged drainage buckets.

These gratings have to sit on a concrete base, within a concrete apron, and be able to be lifted out for culvert maintenance purposes, and then replaced, the new extended height concrete aprons have to be formed prior to any tarmac resurfacing.

I fail to see how they can be welded to anything.

Makes perfect sense, and I'm sure would work well. But, seriously, when was the last time you actually saw them cleaning out an underlying culvert via these openings? (In Pattaya, I mean.)

Sorry, it's the weekend already and TV's resident Pattaya road repair experts are out playing golf (or balloon chasing).

Please check again on Monday.

Thanks for playing.

Actually if you check back over some of the past discussions about building works along Beach Road over the years, there have been some contributions from TV members who appear to have been engineers in their previous lives. They might not have laid roads but they are able to work things out from first principles, so not similarly possible here?

But what point their wisdom and experience when even road repairs in Thailand are 'different'? We pretty much have a handle on how it is handled in UK, US, Norway, New Zealand or wherever but this is LOS. I guess discussing what different countries do is illuminating and gives people something to do but doesn't make living with the perpetual Pattaya cock-ups any easier.

I think the real engineers in residence are able to work from first principles recognising something done differently and effective as opposed to differently and a nonsense. No it doesn't make life easier but still worth being educated a little.

Can tell you that around 60% of the new storm drains (from second road towards Tukcom) are level with the new tarmac, the rest is already 2-4 cm lower.. just coming back from there on my bike, almost worse than before..

Remember second road after the new road surface. The drains were so far below the road surface cars had to avoid them. Took them months to figure out it had to be redone. But eventually sanity prevailed and the drains were leveled. I suppose it will be the same on Tai, as Thais don't learn from the past.

Dear papa al,

Please see my final explanation of the grill saga, I hope it goes some way as to setting out the recognized standard practice of the installation metal drains,

These metal gratings are the are the drainage points and access to a very large culvert, as I previously described, and as such have to be removed for the purpose of clearing out accumulated sand and silt either by suction hose or dragged drainage buckets.

These gratings have to sit on a concrete base, within a concrete apron, and be able to be lifted out for culvert maintenance purposes, and then replaced, the new extended height concrete aprons have to be formed prior to any tarmac resurfacing.

I fail to see how they can be welded to anything.

Makes perfect sense, and I'm sure would work well. But, seriously, when was the last time you actually saw them cleaning out an underlying culvert via these openings? (In Pattaya, I mean.)

It was done 4 or 5 years ago, the suction machine was deafening and the job must have lasted 2 weeks, I saw one little guy come out, covered in what looked like crude oil

Dear papa al,

Please see my final explanation of the grill saga, I hope it goes some way as to setting out the recognized standard practice of the installation metal drains,

These metal gratings are the are the drainage points and access to a very large culvert, as I previously described, and as such have to be removed for the purpose of clearing out accumulated sand and silt either by suction hose or dragged drainage buckets.

These gratings have to sit on a concrete base, within a concrete apron, and be able to be lifted out for culvert maintenance purposes, and then replaced, the new extended height concrete aprons have to be formed prior to any tarmac resurfacing.

I fail to see how they can be welded to anything.

Makes perfect sense, and I'm sure would work well. But, seriously, when was the last time you actually saw them cleaning out an underlying culvert via these openings? (In Pattaya, I mean.)

Mr. Fosseway

One could raise the plinth as you suggest but this is impractical.

Much better to extend the grate downward by weldment to reach the plinth.

See post 14.

If you are still not 'seeing,' just do a field inspection @ Pattaya Tai, okay?

Wpcoe:

City did a clean out operation on soi Arunatai last year.

More of this type of maintanence would help vs flooding, a lot.

I'm impressed that they actually clean out (at least some of) the drains in Pattaya. I had read that in Bangkok, prisoners were sent down into the sewer system to perform maintenance/cleaning duties, but nothing about here. Not a pleasant task to perform, I'm sure.

Looks like the drains from 3rd road towards tukom are even now.