GPL sphere tanks in Eritrea

Reinforced concrete foundations and civil works for two 2,000-cubic-metre steel spheres for stocking LPG and for a 1,000-cubic-metre tank for firefighting water in the Massawa warehouse (Eritrea).

The steel spheres for stocking liquefied gas have a diameter of 15.6 metres, with a top height of about 18 metres from the ground; ten steel columns of circular section and diameter of about 0.7 metres support the sphere.

The foundations of each sphere is made of an underground annular beam with a reversed-T section, 1.7 metres high and 5.7 metres wide.

The steel water-tank has a cylindrical wall of inner diameter 12.5 metres and height 8.5 metres.

The water-tank foundations are made up of a perimeter annular beam of 1.1 m high, made of reinforced concrete, inside of which a coarse soil, with a suitably diversified particle-size, is placed in compacted layers.

In addition to this, the foundations for the tank plants and a reinforced concrete road leading to the warehouse were designed.

Services provided: Execution design and technical assistance for civil works and foundations.

Client: PARESA S.p.A.

Site: Ministry of Energy warehouse in Massawa (Eritrea).

Years: 2011-2012.