Hello everyone,
I had an architect prepare the design and planning permission documentation for an extension to an existing residential building. The architect conducted the initial surveys and measurements. The building permit / planning permission has been granted.
Now, at the start of construction, I noticed that according to the plan, the top edge of the foundation slab is 20cm (8 inches) below the level of the sewer inlet / drain pipe. This means that during heavy rain, the house would be flooded. The water cannot drain to the sides because the plot is fully enclosed. Is this a planning error, or is the architect not required to provide a drainage plan?
I had an architect prepare the design and planning permission documentation for an extension to an existing residential building. The architect conducted the initial surveys and measurements. The building permit / planning permission has been granted.
Now, at the start of construction, I noticed that according to the plan, the top edge of the foundation slab is 20cm (8 inches) below the level of the sewer inlet / drain pipe. This means that during heavy rain, the house would be flooded. The water cannot drain to the sides because the plot is fully enclosed. Is this a planning error, or is the architect not required to provide a drainage plan?
Hello TD-210p
What is the architect’s assignment? An extension at the same level as the existing house? Then the planning is correct. He should have informed you about the discrepancy between the extension height and the sewer elevation. As it stands now, you need to raise the water level. A sump pump or lifting station is necessary. How is this issue solved in the house? The sewer must necessarily be higher than the floor slab there as well.
Steven
What is the architect’s assignment? An extension at the same level as the existing house? Then the planning is correct. He should have informed you about the discrepancy between the extension height and the sewer elevation. As it stands now, you need to raise the water level. A sump pump or lifting station is necessary. How is this issue solved in the house? The sewer must necessarily be higher than the floor slab there as well.
Steven
TD-210p schrieb:
That means the house would fill up with water when it rains. The rainwater will behave the same way as with the residential building, since the level will be the same due to the screed and floor covering.
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