I am having a real problem with a project I am currently undertaking for a friend's company. During construction, the modifications requested by some people led to the area behind the building and wall to reduce to about 700mm. There is already a stormwater (open channel) running behind here.
The bulding is 2 floors high. I am having great difficulty coming up with a solution to implement the drainage through the back. what i have come up with currently is covering the open stormwater drain (as it is about 1m deep) with a concrete slab and then installing my manhole above it. please view the image shown for a better understanding.
If you have any suggestions, please let me have them. i am in dire need.
The bulding is 2 floors high. I am having great difficulty coming up with a solution to implement the drainage through the back. what i have come up with currently is covering the open stormwater drain (as it is about 1m deep) with a concrete slab and then installing my manhole above it. please view the image shown for a better understanding.
If you have any suggestions, please let me have them. i am in dire need.

