Routing of Utilities - Waste Access

[NewToAllOfThis]

First, sorry, drawing is not one of my best skills.

Electric is installed and the waste has two pipes vertically out of the ground near the manhole for the waste to be connected to. The waste needs to run along where the dark blue lines are shown.

What I need to know is where do I need to fit entry access if blockage ever needs to be cleared. The waste pipe in the property is shown by the large blue circles (not to scale). The property is on stilts so there is around 500mm between the block and beam floor and the ground level.

Is there such a waste pipe that is flexible as to ground does sink over time so using fixed pipes it would eventually need replacing with longer pipe.

How deep do I need to put the waste at ?

Any suggestions as to the route the water pipe should run, can it be placed in the same trench as the waste and is there a minimal distance apart.

Is it ok to run the water pipe above ground for around 4 metres if it is insulated and if it can, what insulation can I use.

 

Waste Plan Ver 5.pdf