Aug 03, 2012
Midrand stormwater piping installation progressingBack
Construction|Waterfall City|Concrete|Flow|Housing|Labucon Resources|Pipe|Pipes|PROJECT|Projects|Rental|Resources|Road|Roads|Rocla|Water|Building|Flow|Pipes|Road Infrastructure|Juskei River|Craig Waterson|Infrastructure|Johann Van Niekerk|Sias Swart|Water|Pipe
© Reuse this
The progress of what is set to become Midrand’s new central business district is overseen by developers Atterbury Property and will comprise 800 000 m2 of rental space when the project is completed in 2018.
The stormwater piping project began in November last year and was initially planned for completion in November this year; how- ever, various additions to the project resulted in the completion date for the overall stormwater piping project being moved to early 2013.
Rocla was initially contracted to supply 1 550 t of stormwater piping, but was asked to provide an additional 350 t. The storm- water piping is also being extended to an adjacent housing development.
The installation of all piping at Waterfall City is well advanced. Other aspects of the project, such as the construction of roads, will be completed by early next year.
Construction company Labucon Resources is building the roads according to Johannesburg Roads Agency (JRA) standards.
Rocla sales executive Johann van Niekerk says the size of the interlocking joint pipes, which weigh up to 7.5 t each and vary in diameter from 450 mm to 1 950 mm, was a challenge, as large trenches had to be dug to accommodate their size and volume.
Labucon Resources project site manager Sias Swart adds, however, that the pipes posed no quality issues and the quick supply from Rocla allowed for swift installation.
“It was important that the material was supplied as quickly as possible so that we have enough time to start building the roads, which will start soon.”
Once the roads have been built, the JRA will take over responsibility for the stormwater and road infrastructure.
Meanwhile, Swart points out that one of the challenges experienced during the stormwater piping installation was groundwater, which produced a high water table in areas that were being excavated.
To manage and prevent structural problems between the trenches and the piping, bidem sheeting and 150 mm of stone bedding were placed around the piping.
The bidem sheeting was installed on embankments above the pipes to prevent ground- water from penetrating beneath the road surface material.
The stone bedding provides stability for the pipes and prevents soil movement from exert- ing stress on the pipe joints.
Groundwater was also pumped out of trenches and the area was laid with concrete.
The stormwater pipes will drain the site and release the water into three channels, all of which will eventually flow into the Juskei river.
To prevent soil erosion, Rocla supplied the precast wingwalls required for the project.
The wingwalls direct the water into and out of pipes, reducing turbulence and improving the hydraulic capacity of the conduit, says Rocla sales and marketing director Craig Waterson.
“Precast wingwalls are equipped with a separate concrete toe, which keys the entire unit to the ground and prevents any movement, which also reduces the risk of scouring the soil below or to the side of the toe,” he explains.
The wingwalls were introduced to the South African market in June, last year, and Waterfall City was one of the first projects in Gauteng where these have been used, says Van Niekerk.
Rocla will also supply manholes, which are installed at the points where the pipes change direction.
The stormwater pipes, wingwalls and manholes are manufactured at Rocla’s premises in Roodepoort.
Edited by: Chanel de Bruyn© Reuse this Comment Guidelines (150 word limit)
Other Pipes and Tubes News
Pipe manufacturer Southern Pipeline Contractors (SPC) on Wednesday officially opened its new R70-million high-density polyethylene (HDPE) pipe factory, on the East Rand, diversifying the company’s manufacturing capability. The facility, which became operational on...
Pump specialist Australian Pump Industries announced in May that it offers a simple guide for the use of hydrostatic testers, which it makes available free of charge. Locating leaks and proof-testing gas and oil pipelines is made easier with portable hydrostatic...
Marley Pipe Systems is the leading manufacturer and supplier of plastic pipe systems, serving the needs of the mining and industrial segment with superior quality products and turnkey solutions to improve efficiency, solve key industry challenges, and ensure safe and...
Updated 2 minutes ago Development financier Eastern Cape Development Corporation (ECDC) on Tuesday reported a stable balance sheet for the 2013/14 financial year, boasting a net asset value of R1-billion at year-end. Speaking at the financier’s performance results at the ECDC headquarters...
Updated 23 minutes ago Failed South African lender African Bank Investments (Abil) is likely to re-list on the stock exchange early next year, and its government supervision will be concluded without the use of taxpayer money, Finance Minister Nhlanhla Nene said on Wednesday. The central...
Updated 38 minutes ago Department of Trade and Industry export promotion and marketing chief director Zanele Sanni has invited manufacturing and advanced manufacturing companies from Shenzhen, China, to invest in South Africa, noting that Chinese investors could also access the additional...
Recent Research Reports
Defence 2014: A review of South Africa's defence industry (PDF Report)
Creamer Media’s Defence 2014 report examines South Africa’s defence industry, with particular focus on the key participants in the sector, the innovations that have come out of the sector, local and export demand, South Africa’s controversial multibillion-rand...
Road and Rail 2014: A review of South Africa's road and rail infrastructure (PDF report)
Creamer Media’s Road and Rail 2014 report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail network, the funding and maintenance of these respective networks, and the push to move road...
Real Economy Year Book 2014 (PDF Report)
This edition drills down into the performance and outlook for a variety of sectors, including automotive, construction, electricity, transport, steel, water, coal, gold, iron-ore and platinum.
Real Economy Insight: Automotive 2014 (PDF Report)
This four-page brief covers key developments in the automotive industry over the past 12 months, including an overview of South Africa’s automotive market, trade figures, production and the policies influencing the sector.
Real Economy Insight: Construction 2014 (PDF Report)
This five-page brief covers key developments in the construction industry over the past 12 months. It provides an overview of the sector and includes details of employment in the sector, infrastructure and municipal spending, as well as insight into companies’...
Real Economy Insight: Electricity 2014 (PDF Report)
This five-page brief covers key developments in the electricity industry over the past 12 months, including details of State-owned power utility Eskom’s generation activities, funding and tariffs, independent power producers and prospects for the sector.
This Week's Magazine
The broad-based black economic-empowerment (BBBEE) alignment process in the con-struction sector has begun, dur-ing which the sector codes of the Construction Sector Charter Council (CSCC) will be aligned with the revised Codes of Good Practice (CoGP), which come...
It is second time lucky for Toby Venter. Ten years ago he negotiated to buy the Kyalami racetrack, but “the deal did not materialise”.
Environmental solutions company I-Cat started construction work on its R22-million, 1 949 m2 environmentally sustainable office and warehouse facility, commissioned by I-CAT Environmental Solutions, at a launch event in October. The new sustainable I-CAT campus,...
Effective file synchronisation and sharing across an organisation’s structures can provide the basis for robust mobile-device and document management while maintaining proper backup, version control and content distribution. These are the lessons learned by complex...
Hotel group Carlson Rezidor currently holds the largest hotel pipeline in Africa with 30 hotels and 6 300 rooms under development. The hotel group develops and operates Radisson Blu in the upper upscale segment and Park Inn by Radisson in the mid-market segment. With...