Stefanutti Stocks Civils added sliding, also known as slip-forming, to their extensive specialist capabilities in January 2008.  This method can be used to build reinforced concrete and pre-stressed concrete structures such as silos, chimneys, building cores, lift shafts, bridge piers, airport radar and control towers and water tower shafts.

The technology of sliding is an economical, rapid and accurate form of construction suitable for prismatic structures over 30m.  Concrete is cast in a 24-hour operation and at an average rate of 150mm to 200mm per hour, allowing a rate of construction progress of up to 4.2m per 24 hour shift.

Stefanutti Stocks has four sliding teams, their projects to date include:

• 47m high, round silo at Amandelbult Mine, Limpopo, RSA.
• 37.7m high, round silo at Brakfontein, Atok Mine, Limpopo, RSA.
• Two 37.4m high, round silos at Ngezi, Zimbabwe.
• 43.95 high, round clinker storage silo, Natal Portland Cement, KZN, RSA.
• 38m high, octagonal shaped radar tower, George Airport, Western Cape, RSA.
• 37m high, triangular shaped air traffic control tower, Sikhuphe Airport, Swaziland.
• 37m high, octagonal shaped radar tower at King Shaka International Airport, Durban

The division is currently on site at the Kusile power station in Mpumalanga, where they are sliding twelve 20.6m high auxiliary bay lifts and twelve 20.6m high auxiliary bay shear walls, due for completion in January 2012.