The Phoenix Wastewater Treatment Works upgrade forms part of a phased approached which will allow for the decommissioning of surrounding sewage treatment facilities, and will result in the Phoenix facility becoming a regional treatment works. The facility is located approximately 35 km north of Durban, and is bounded by the Ohlanga River and the Cornubia Business Park. The treatment process incorporates nutrient removal technologies which reduce the high concentrations of nitrogen and phosphates, thereby allowing the treated effluent to be discharged back into the natural environment in accordance with the Department of Water Affairs and Sanitation's prescribed standards.
A dam for the Mncwasa Water Supply Scheme - Phase 1C, Mndwaka Dam - was identified as the preferred source of water to supply approximately 63 neighbouring villages in the Mbashe Local Municipal Area, and to address the basic water needs of some 40 000 people. Mndwaka Dam is situated near Hole in the Wall, along the Eastern Cape Wild Coast. The dam site is particularly remote and is accessible from the N2 via hilly terrain and unpaved roadways. The project therefore required careful engineering planning, but had the benefit of an abundant labour force, albeit generally unskilled.
Th e former N2/R56 at-grade T-intersection split eastbound traffic from the Eastern Cape into two directions. The intersection favoured priority in the east-west N2-R56 direction, which was the intersection leg with the lowest traffic volume. This caused capacity challenges, reduced service levels, operational constraints and safety problems. SANRAL appointed Nathoo Mbenyane/DEC JV in December 2010 to upgrade the existing T-intersection to a grade-separated interchange. Group Five Coastal commenced the construction of the interchange in April 2013.
The project, situated in the Northern Cape near Hothazel, called for the upgrade of existing material handling and construction of a multi-bin silo. Stefanutti Stocks Civils rose to the challenge to construct the silo by means of slip-forming, while having to deal with the extreme heat experienced in that region - the ambient temperatures range in the 40°C plus range. Stefanutti Stocks Civils modified the design in conjunction with design engineers DRA to render the construction of the challenging structure simpler and more conducive to slip forming. The whole silo was slid from the base, incorporating the columns and sliding the walls to accommodate the construction of the slab. The balance of the slip was then installed from work with specially designed supporting trusses to slide the complete structure to the top level. The volume of concrete used amounted to 50 m3 per metre.
The M4 starts on Durban's beachfront and heads north over the Umgeni River before ending at Ballito some 40 km away. A very popular tourist route, weekends see dozens of cyclists enjoying the ambience. Unfortunately, the section from Umhlanga to the Umdloti River was notorious for the poor condition of the road, and was full of potholes and cracks creating dangerous conditions, especially on the shoulder where the cyclists mainly ride. There were also many overhanging branches adding to the danger, and most of the side drains and guardrails were badly in need of refurbishment.
Life Health Care required additional floor space for a new maternity theatre, delivery rooms and additional services. The resulting extension would result in increased service to the community of Mthatha.
The upgrading of Main Road 100 is part of the African Renaissance Roads Upgrading Programme. It comprised the construction of earthworks, layer works surfacing, drainage and retaining structures on Main Road P100 Ndwedwe from km 37to km 41.
This project is located in the Eastern Cape on National Route 2 Section 18 between Sitebe Komkhulu and Viedgesville (a distance of approximately 25 km) and forms part of the link connecting the cities of Mthatha and East London. The route is also a major link in the transporting of goods and people within the Eastern Cape and therefore plays a very significant economic and social role. The South African National Roads Agency (SANRAL) originally appointed Aurecon to provide professional services relating to the rehabilitation of the existing road. However, initial geometric assessment of the road concluded that much of the existing facility had a design speed of only 60 to 70 km/h, while road users were travelling at much higher speeds. This was of particular concern where these low standards applied to the sight distances over crest-vertical curves. The substandard geometry led to the decision that the reconstruction of the road was required to achieve the desired horizontal and vertical standards instead of the rehabilitation of the existing road as originally envisaged.
The Cornubia Integrated Human Settlements Phase 1A and 1B project forms part of the Cornubia Precinct development, which is the largest phased, mega-infrastructure green-fields initiative in KwaZulu-Natal. The project is being developed along the principles of 'breaking new ground', promoting the achievement of a nonracial, mixed income, integrated society through the development of sustainable human settlements. Th e objective has a social component of integrating various income groups together with industrial and commercial land uses within one development precinct, aiming to address spatial planning by bringing people from the lower-income group closer to places of work and commercial centres.
The Cederberg Nature Reserve project is a R20 million investment by the Department of Environmental Affairs (DEA) into an upgrade of the Algeria Campsite which is operated by Cape Nature in the Cederberg Wilderness area. This project was executed within the Expanded Public Works Programme (EPWP), facilitating maximum employment and skills training for the local community. Upon appointment by the DEA, HHO Africa met with the DEA and Cape Nature in order to gain a better understanding of their objectives, given the limited total project budget of R20 million. A formal business plan was submitted, which also addressed the requirement that 30% of the budget would be spent on EPWP wages. The optimal economic solution would be to create chalets and an additional ablution block to complement the existing campsites. HHO Africa also assisted Cape Nature to source funding for a new administration building to replace the previous one which had been destroyed in a recent fire. This opportune addition to the project was added to the EPWP building contract, giving the client the benefit of economies of scale. A critical success factor was the level of stakeholder engagement. Many meetings were held with the local municipally in Clanwilliam, and bi-monthly project advisory committee meetings were also held with the local community in Bosdorp, near the Algeria Campsite. The depth of engagement with the local community gave HHO Africa a unique understanding of the people's aspirations for work in their area. This was invaluable in setting goals for deliverables and defining tasks during the construction phase.
For several years the Department of Agriculture and Environmental Affairs (DAEA) has been rolling out agricultural projects involving stock watering, community gardens, and/ or dipping-tanks, none of which are possible without a reliable water supply. Part of the infrastructure spend is solely dedicated towards the development of groundwater resources to service these installations and make them viable entities. A typical project consists of developing a groundwater resource - location, construction supervision, drilling, sustainable yield testing, potability assessment, equipping, and reticulation to a small-scale water supply scheme. The DAEA quickly realised that the supply for agricultural purposes only was not maximising the benefit of the resource, as the community in question had limited access to potable water.
Hatch Goba (Pty) Ltd was awarded the contract to undertake the assessment, design and construction supervision for the construction of structures and facilities relating to commuter and pedestrian safety along the R61 Section 8 between Mthatha and Port St Johns. The project had two main objectives- firstly to implement vehicular and pedestrian safety initiatives along the route, and secondly to implement a community development programme that focused on the development of local SMME contractors. In order to achieve the two objectives, eight packages were devised, structured such that they achieved SANRAL's objectives of conventional construction and community development. The overriding principle was that the upgrade of the R61 would be done using conventional methods, while the community development portion of the project would be utilised for the training and development of local SMME contractors.
Th is project encompasses the coordination and construction of two educare centres to replace the previous old dilapidated shacks. The neat, clean, practical and spacious educational buildings - a vital community facility - can now continue to serve the community.
The Jorf Lasfar phosphate slurry pipeline in Morocco, commissioned in April 2014, is the world's largest phosphate ore pipeline, with capacity to transport 38 million tonnes per year of phosphate ore for a distance of 187 km. It is the first substantial long-distance, high-volume slurry pipeline in Africa. Due to the scale of the project the system comprises some of the largest slurry handling equipment yet produced. Innovations included the development of unique tools for the steady state and transient hydraulic design associated with transporting different grades of phosphate slurry in batches along the route. The project demonstrates that slurry pipelines off er environmental and economic advantages when compared to conventional bulk materials alternatives, such as rail. Paterson & Cooke Consulting Engineers (Pty) Ltd, based in Cape Town, was responsible for the overall hydraulic and process design, control philosophy, detailed piping and mechanical design of the head station, valve station and terminal choke station, construction assistance, operator training and commissioning management.
The Nacala Dam is located on the Muecula River approximately 30 km southwest of the city of Nacala, Mozambique. The dam is the primary water source for the port city, which is the deepest natural deepwater port along the eastern coastline of Africa. It is also a strategic import-export route for Mozambique, linking to Blantyre in Malawi, as well as to the coal fields of Moatize in the Tete Province. The Government of Mozambique has declared the city of Nacala and surrounds an economic development zone.
Vale Moçambique Limitada's Nacala Rail Corridor project is being constructed to provide a new route for product to be transported from its Moatize coal mine in Tete to the new port at Nacala in Mozambique. The newly completed Section 2 forms part of this railway corridor and starts at Moatize, covering a length of 62.5 km to the border of Malawi. Aggressive implementation time frames saw innovative modular bridge designs being introduced to ensure that constructability would be fast-tracked. The rail line crosses numerous rivers, streams and watercourses found typically on the flat plains in Mozambique. With such fat topography, difficulty arose with the diversion of water flowing through the works. Due to the nature of the watercourses and the flat gradients, the rainy season would see continual flooding, hence the bridge deck designs were engineered to span the water with precast concrete beams. This was subsequently changed by the contractor who instead opted to use steel girders and cast the beams in situ. Three cast-in-situ culverts were substituted with Armco culverts which were found to be cheaper and quicker to construct.
A number of awards were made for Project of the Year (per Division) in the SAICE Technical Division subcategory. SAICE President Malcolm Pautz presented the winners and/or their representatives with these awards. Unfortunately there was no representative to receive the Project Management and Construction Division Award, where the winning project is the Head Office for the Department of Environmental Affairs
In the SAICE Individual Awards sub-category a number of awards were made by the Institution under the headings listed below, and presented to the winners by SAICE President Malcolm Pautz. A number of individual SAFCEC Awards were also given out during the evening.