We need some proper serious wisdom here and I promise I won't turn it into a Thread.

Suppose you dig out some 'oles and put in concrete pillars in a proper and serious way.

Then you realise you actually need another 5 feet . Can you safely and nicely extend them ? Or do you need to dig it all up and start again ?



Here's the real situation ...............












Yes it would indeed save lots of time and mess and no doubt the Thais would happily bodge it all to work .
But I'm not looking to bodge around even though it's not for me so I don't care .

Can it be done ? Is it done ? Fairly nicely ?

With thanks from ....


Wasp