Overloaded soil truck likely causes concrete slab collapse in Bangkok

[Coss]

29 minutes ago, bust said:

Wonder who, if anyone signed off on the works 😊

Somchai the road builder signed the name of Somsak, the lunch time restaurant owner.

Somchai has scarpered and Somsak has complained to the local authorities, about the truck in a hole, in the road outside his restaurant, that is affecting his business.

[bust]

Any comment from Chadchart? Are him and Somchai friends?

[Mekong]

8 hours ago, bust said:

Doesn't need to be a solid surface to be fit for purpose. Like I said more an engineering fail. As for the slab/slabs for it to fold in that way as a single slab it would indicate a lack of, or complete absence of any reinforcement, again an engineering fail.

So again the point I am making is the concrete didn't fail the application did. Wonder who, if anyone signed off on the works 😊

 

On 11/10/2023 at 3:04 PM, bust said:

OK think of this way. Lay a piece of wood between 2 bricks and jump on it. It breaks. Lay that same piece of wood on a solid surface and nothing happens

So you “Lay “a flat piece of wood on a solid surface” but “Doesn’t need to be a solid surface to be fit for purpose” Which is it? If it doesn’t need to be a solid surface why bring up the piece of wood on a solid surface as opposed to two bricks?
 

Also “Application Failure” WTF is that when it’s at home. The application is fixed, to cover a hole in the road during daytime to carry traffic, a simple application.

Obviously the concrete did fail or else if Wouldn’t be in the hole, so what caused it to fail.

• Overweight Lorry

Maximum Load on Thai Roads is 35 Tonne so the slab / support arrangement SHALL be designed for 35 x 1.5 = 52.5 Tonnes. An 8 wheeler net weight is approx 12 Tonnes so it can carry 23 Tonnes. Density of soil is 1500 g / 1.5 Tonne per SQM so at 35 Tonnes the lorry would be carrying 15.33 SQM. I order for the lorry to exceed the design limit of 52,5 Tonnes it would need to have 27 SQM of soil on it which is 75% more load. It is clear to the naked eye that the lorry is not carrying 175% capacity

• Design Failure

The Slab and it supports we’re not correctly designed for the 52.5 Tonne load. Whether Slab thickness, lack of rebar, insufficient supports or whatever. A Civil Engineer would need to review the design data to ascertain the point of failure.

• Manufacturing Error

Was the concrete used to form the slab subject to a concrete slump test, i.e. Compressive Strength, Water Permeability etc

 

[bust]

Basically, without waffling, it's only as strong as it weakest point 😊

[Mekong]

23 minutes ago, bust said:

Basically, without waffling, it's only as strong as it weakest point 😊

What the Concrete or your argument? 😜

[bust]

The

15 hours ago, Mekong said:

What the Concrete or your argument? 😜

Actually I was referring to the road My argument solid as

[Mekong]

I know, but it was too good of an opportunity to miss

[Mekong]

This Photo shows it better

 

[Coss]

Jeez, even an idgit like me, can see the problem here.

They used a 105° slab instead of a 90° right angle one.

 

[bust]

This shot clearly shows the concrete didn't collapse but the support.

Seems like it was 2 separate panels on a steel frame. Total engineering fail.