This may not be a gardening project as such, but i know you are all a helpful bunch on here and I thought i would share my problem.
I have discovered that my rectangular manhole in the back yard was historically covered over by one course of block paving and then later by lightweight patio slabs. This means that the manhole cover is about six inches below the surface at present.
I had to buy a new lid anyway as the old one had rusted under all the damp sand and stonework.
I have a mind to remove the lid, add two courses of bricks (or one course and a concrete top depending on what will bring me to the level I need), fit the new frame and lid and re-pave to finish.
Would that be easier than building a concrete casement to form a frame around the inspection hole?
Anything I should look out for - apart from falling in!