This is a question often asked by young civil engineers. One of the student in the forum asked this question and I thought of answering this.
The question was '' Can we place a sump tank on top of the footing''? His primary concern was that if this will result in excessive pressure on the footing.
I have made a video for answering this point on additional pressure due to water tank. The video has 2 additional points in it in addition to answering if the water tank will excert additional pressure.
A point on water proofing.
A point on instability that can result if you are not careful.
If you like to see more blogs and videos on Foundation related points, it is here which helps you on how to interpret a soil report and precautions that you need to take when there is a compressive soil in a project site.
Please provide your comments below in the forum. Discuss all your questions on this point in the comment section.
It is more appropriate to take footing deeper and sump may be placed
over it with some cushion layers of sand between footing top and sump bottom.