Pipe Jack Gauteng: Special Projects Descriptions

1. Manor Malboro Electrical Upgrade, Alexandra Township

Client: CBI Electric Group / Eskom

Number Of Jacks: 1

Work Description:

 Installation of 187.5m of 1500mm Ø concrete pipes for the insertion of 9×250mm and 2×110mm uPVC pipes. Plastic pipes are then inserted into the jack provided, the voids between the pipes are grouted up and secured into place. Electrical cables are then pulled through the pipes provided and linked to the substations to sufficiently upgrade the power utility within the area.

Completion Date: April 2015

2. Reservoir Water Drainage Pipe, Weltevreden Park

Client: Rand Water Board

Number Of Jacks: 1

Work Description:

Jacking of 50m × 1800mm Ø concrete into position for the drainage pipe of the newly constructed 100kL Reservoir.

Completion Date: 2011/12

3. Concrete Outfall Sewer Pipe Installation, Moreleta Park

Client: Tshwane Municipality

Number Of Jacks: 5

Work Description:

Supply and install 5 × 1500mm Ø concrete jacks, 4 jacks under secondary roads and 1 jack underneath a main gas line. Once the jacks were in place, concrete pipes are then jacked into place for the provision of sewer services with the necessary grades as per the clients’ request.

Completion Date: 2013

4. River Crossings

4.1 Craighall Big River & Small River

Client: CBI Electric Group / Eksom

Number Of Jacks: 2

Work Description:

Two rivers needed to be crossed in the Craighall Area for the installation of high voltage cables for the upgrading of the main electrical system in the area.

First River Crossing (Big River) - 67.5m x 1200mmØ,

Second River Crossing (Small River) - 50m x 1200mmØ.

Both crossings are in solid Granite rock, which requires both drilling & blasting operations in order to remove the material from the front of the jacking face.

Completion Date: 2015

4.2 Bronkhorstpruit River, Braamfontein

Client: Rotek & Roshcon / Eskom

Number Of Jacks: 2

Work Description:

Two river crossings were conducted in the Braamfontein area at different time periods, both in solid rock & 1200mm in diameter.

Completion Date: 2008 & 2010

5. Medupi Power Station, Lephalale

Client: Eskom

Number Of Jacks: 1

Work Description:

Installation of a 1200mm Ø concrete jacking sleeve under a main road near to power station for the insertion of a steel water main pipe.

Completion Date: 2011

6.Kusile Power

Client: Tshwane Municipality

Number Of Jacks: 5

Work Description:

Supply and install 5 × 1500mm Ø concrete jacks, 4 jacks under secondary roads and 1 jack underneath a main gas line. Once the jacks were in place, concrete pipes are then jacked into place for the provision of sewer services with the necessary grades as per the clients’ request.

Completion Date: 2013

7. C6 Steel Presure Water Pipeline, 84km - Alberton to Boksburg

Client: Rand Water Board

Number Of Jacks: 14

Work Description:

Installation of Pipe Jackings ranging from 1200mm to 1800mm Ø all underneath roadways from Alberton to the Boksburg regions, Johannesburg.

Two jacking works which need mentioning include the R59 highway jack, whereby 95m of 1500mm Ø was jacked into position, as well as the N17 box culvert jacking operation, whereby special steel brackets were designed and manufactured to specially fit onto the steel pipes which were pulled through the currently installed box culvert. All works were conducted by the Pipe Jack crew.

Completion Date: 2015