LPG (liquefied petroleum gas or cooking gas) domestic consumption, despite the abundance of natural gas in Nigeria is still very low. Nigeria is the second most endowed nation in Africa with proven reserve of over 260 trillion cubic feet of natural gas either associated with petroleum or occurring on its own gas field, even as up to 2 million cubic feet is flared off daily as crude oil is drilled making Nigeria the largest gas flaring country in the world. The low gas consumption is a result of lack of adequate downstream LPG handling infrastructures to take bulk LPG gas from mother vessels to onshore locations where gas can be easily transported for domestic use.

In 2009, TREVI Foundations Nigeria was commissioned to design and construct all waterfront facilities for a major LPG terminal in coastal Lagos. Subsoil investigation data proved the site is underlain with recent organic clays and young sediments in shallow water ranging between 1.2m to 6.0m. The requirement was to design berthing and mooring facility capable of handling up to 60,000 metric ton LPG gas vessel with water intake channel, fire fighting facility and (water reservoir) pit. In all, the following were installed at this site: 28No. 1.5m bored piles seated at between 35m and 40m below the river bed to support the berthing and mooring dolphins, 10No. 600mm diameter open bottom steel cased piles to support the intake pit, 247No. mono fluid jet grouted (JG) columns acting as bottom plugs to between 11m and 13m below the river bed to seal the bottom of the pit and make excavation works easy in marine environment and 184 elements of precast 600mm wide by 300mm thick by 10-13.0m long reinforced concrete plates with joints grouted installed by vibro jetting to form the intake channel wall. TREVI proprietary software and PLAXIS 8.6 code were utilized for the design and simulation of the various foundation and structural elements. The project was completed in a record time of 5½ months, handed over to the client and is already in use.