I am in the process of building a new patio and need to raise a manhole and it's cover to what will be the new finished level.
The top of the manhole currently sits 40cm below what will be the finished level of the patio. I want to raise the sides and cover with a recessed cover that I can lay the Indian sandstone in.
The manhole is made of pre-cast concrete which balloons into a chamber below the surface. The current cover is approx 70 x 55cm. However I can't seem to work out which risers to use for that size and can't find the right sized recessed cover.
I've included a photo in case that's helpful. The finished level of the patio will be the top of the sleepers.
Any help is appreciated.
The top of the manhole currently sits 40cm below what will be the finished level of the patio. I want to raise the sides and cover with a recessed cover that I can lay the Indian sandstone in.
The manhole is made of pre-cast concrete which balloons into a chamber below the surface. The current cover is approx 70 x 55cm. However I can't seem to work out which risers to use for that size and can't find the right sized recessed cover.
I've included a photo in case that's helpful. The finished level of the patio will be the top of the sleepers.
Any help is appreciated.
