Storm water storage tank

Ignacio Reboto, Civil&Structural engineer

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.

Project drawings, 1. Shapes

2. Slab foundations

3. Walls

4. Walls

5. Walls

6. Cover slab

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