Designed as a university project and developed in the subject of reinforced concrete

1. Storm water storage tank
Ignacio Reboto, Civil&Structural engineer

2. Underground storm water storage tank,
summary description
• Main function: Capture and retain storm water mainly in periods
of high precipitation, reducing flood risk.
• Construction materials used
Concrete HA-30/B/20/IIa
Steel B500S
• Buried construction, the lowest point of the structure is 5.4 meters
below ground level.
• It is divided into two parts, main chamber(water storage) and drain
chamber
• These chambers are formed by two slab foundations, four
perimeter walls, one interior wall and one cover slab.

3. Project drawings, 1. Shapes

4. 2. Slab foundations

5. 3. Walls

6. 4. Walls

7. 5. Walls

8. 6. Cover slab

9. Steel (kg) Concrete (m3
) Amount (kg/m3
)
Slab foundations 1.793 30,00 59,77
Walls 4.072 18,75 217,17
Cover slab 1.219 30,00 40,63
TOTAL 7.084 18,75
Volume of excavation m3
Length Height Width Volume
Main hole 13,2 4,2 5 277,2
Drainage Hole 1,8 5,4 5 48,6
Slope, side 1 5 4,2 6,3 66,2
Slope, side 2 5 5,4 8,1 109,4
Slope, side 3 13,2 4,2 6,3 174,6
Slope, side 4 1,8 5,4 8,1 39,4
Slope, side 5 13,2 4,2 6,3 174,6
Slope, side 6 1,8 5,4 8,1 39,4
TOTAL 929,3
Steel and concrete
quantity
Excavation