A 15kWp off-grid, ground-mount solar PV system was installed on a wooden sub-structure on Dassen Island.
The installation stores energy into a 48kWh Li-ion battery set and is integrated with a generator set as back-up.
The island is located 9km off Yzerforntein, Western Cape.
Since 2015 BVi has been involved in the design of five wind energy facilities throughout South Africa. One such facility near De Aar has been successfully completed, currently providing 100.5 MW of electricity to South Africa’s power grid, while two others (Perdekraal and Kangnas) are currently in construction with the remaining two (Excelsior and Golden Valley) scheduled to start construction in early 2019.
Combined, the five wind energy facilities will produce a total of 519.8 MW of electricity to the power grid of South Africa, relieving pressure currently put on our natural resources, such as coal, used to produce electricity.
Each wind energy facility has been designed to fit its local conditions.
Technical specifications at Perdekraal:
Turbine Model: Siemens SWT-2.346-108
Turbine Capacity: 2.3MW
Hub Height: 115m
Number of Turbines: 55
Foundation Diameter: 18.5m
Total Road Length: 30km
Table Grapes for export markets, packing- and cooling facility.
The facility is 10 500m² under roof with more than 500 people working in the facility. The packhouse receives 180 tons of grapes which is then cooled to 16 °C and then sorted and packed into 360 000 x 500 g punnets accurately made to weight and then assembled into pallets. The pallets is then cooled to -0.5 °C in 12 hours and then shipped in a total of 15 refrigerated shipping containers. The project had very tight timescales and the approaching harvest date cannot be moved or negotiated. A concurrent engineering approach was needed with designs and drawings being finalized for some disciplines after construction started. The adaption to Egyptian standards and way of doing things proved challenging together with language and distance from the site. BVi Northern Cape (Springbok) also had a full-time representative on site, spending almost 5 months in Egypt.
The BSG Warehouse, with an area of 20 000m², is located in Centurion, Gauteng.
It is equipped with 1115 light fittings of which 248 are LED highbay fittings.
Ships weighing up to 700 Tons are hoisted with the Synchrolift at Cape Town Harbour out of the water for maintenance of the ships typically every 5 years. The rails which are used to transfer the ships on land are in need of repairs. Replacement of the rails and improving the durability of the rail connecting mechanism at the transfer location where the Synchrolift connects to the fixed rails is necessary. Improving the drainage of the concrete slabs in the parking bay area’s is also an outcome of this project.
Installation of a 367 kWp grid-tied rooftop Solar PV system, consisting of 1129 PV panels and 15 x SMA inverters
The project consists of the Rehabilitation/Improvement, Routine Maintenance Works of N220 Chissano - Chibuto and N/C Crz. N220 - N1 (3 De Fevererio) located in the Gaza Province in Mozambique. The two roads fall within the Limpopo floodplain and have been damaged by recent floods, with sections of the roads washed away.
The scope of works includes the reconstruction and/or rehabilitation of 57 km of road including the construction of 52 box culvert structures, varying in size from 2 m x 1 m box culverts to 5 m x 3 m box culverts.
An existing bridge at km 20.5 of Road N220 has undergone severe erosion of the embankments, which has led to the collapse of the bridge approaches. Moreover, the existing bridge piers built on shallow foundations were also noted to show major signs of settlements which contribute to the structure being unsafe and unserviceable. The project scope includes the construction of a new 80m bridge to replace this existing along Road N220.
Phase I of the construction of the new Hani Park Primary School has been successfully completed with anticipated completion of Phase II end of May 2018.
The school consists of four classroom blocks totalling 27 classrooms, as well as additional structures for two computer laboratories, administration building, hall and gate house. The expected number of learners for Hani Park Primary School is to be in the vicinity of 1 080.
Cluster 4 - Lubisi Scheme: Water Treatment Works, Pumping Stations, Primary Steel Pipelines and Reservoir to Sikungwini.
BVi was responsible for the full scope design of civil and structural elements of the water treatment works. 8.4km of 350mm ø steel pumping mains, 1.2km of 350mm ø PVC pumping mains, Three pumping stations, varying in capacity between 106 ℓ/s and 4.5 ℓ/s, 3 concrete reservoirs: 1.25 Mℓ, 300 kℓ and 200 kℓ
BVi is providing full EPCM Services at the Letseng Diamond Mine: Pre-feasibility Study, Feasibility Study, Detail Design, Project Management, Procurement, Contract Management and Construction Management
The project entails: Geotechnical Investigation, Bulk Earth Works, Terracing & Roads, Heavy Mining Equipment Workshop, Washbay and Quick Service Workshop. Water Supply Pipeline, Essential Services – Potable and Process Water Reticulation Network and Sewage Reticulation. Water Storage Reservoirs and Compressed Air Installation. Mining Haul Road Around the Workshop Facility. Offices and Ablution Facilities for the Maintenance and Operational Staff. Washbay Mechanicals Complete With Silt Trap, Water Circulation and Water Heating System. Earthing and Lightning Protection for the Entire Facility, 11kv Reticulation, 11kv Transformers, Miniature Substations, 400/230V Distribution and the Control and Instrumentation for All Systems. Area Lighting for the Facility and Internal Building Services (Small Power and Wet Works)
BVi Consulting Engineers Western Cape (Pty) Ltd was appointed by the Western Cape Government, Department of Transport and Public Works for the implementation of various rooftop Solar PV systems on several buildings identified in the Cape Town Metropolitan area, which are owned and/or operated by the Western Cape Government. BVi’s involvement entails the conceptual design, tender documentation, design approval, construction monitoring and contract administration.
These systems are grid-tied and reduce the purchase of grid electricity from the City of Cape Town. The savings from avoided electricity purchases are providing the financial returns necessary to justify additional capital and operating costs of the systems.
Construction on new Police Station Buildings and Staff Quarters
Refurbishment of Existing Buildings
Design and site supervision of the construction of roads, stormwater, footpaths, pipe bridges, sewer pipelines / manholes and retaining walls.
Construction of new pipelines and associated valve chambers, crossings etc.
Design consultants for a 12 Ml reinforced concrete Reservoir for NamWater in the town of Rundu.
The geotechnical conditions were extremely difficult and the Rapid Impact Compaction method was used to improve soil conditions to achieve the required bearing capacity. This reservoir is some 53m in diameter and 6m high. Construction is progressing well at this point in time!
Visual audit of steel structures and civil works at Beeshoek North and South Mines in the Northern Cape.
The North Mine previously supplied all of Assmang’s iron ore output since 1964. A series of large-scale infrastructure projects had maximized efficiency and productivity on site, which included a full washing and screening plant and a jig plant to beneficiate off-grade ore. Assmang commissioned Beeshoek South Mine in 1999.
The various structural elements were each allocated a condition category ranging from 0 to 5 (0 signifying excellent condition and 5 little to no useful residual strength), followed by priority level recommending the required remedial action.
Other common observed issues included faulty connections, removed and modified structural members, excessive spillage, missing grout below baseplates, vehicular and equipment impact damage, and general damage to walkways.
The combined inspections of Beeshoek North and South Mine covered over 51 conveyors, plant and buildings.
Table Bay Mall is new shopping centre of 65 000m² expected to be completed in October 2017. Table Bay Mall is the 2nd largest after Mall of Africa. Underfloor heating is the most comfortable form of heating. It is unobtrusive, economical, safe, hygienic and virtually maintenance-free. It offers the best long-term method of heating a building because it uses low-temperature water.
Woolworths has embarked on installing water based underfloor heating in all its new stores in the food trading area. The under floor heating for Woolworths Table Bay Mall is designed to keep the Food Trading Area room temperature at 20 °C and floor temperature at 24°C
BVi have designed the system to maintain 20°C room temperature in the food trading area.
The project entails the construction of 6 buildings of 4 storeys each, consisting of 2 bedroom and 3 bedroom apartment blocks. The project commenced in July 2016, and will run for 18 months. The project is currently 20% complete.
The project comprised academic and student accommodation facilities for clinical departments, consisting of 20 tutorial rooms for 10 student groups, 10 lecture rooms for 50 student groups, 2 lecture rooms for 200 students, library and information services, research laboratory, student common room, cafeteria, ablution facilities, maintenance block, staff offices for 20 departments, and student accommodation for 600 students.
Detail design and construction monitoring of the replacement of foundations, structures and small part steel for its 3kV lines that are in need of replacement.
The project is divided into 5 Phases, spread out across 20km of railway tracks between various stations in the Cape Town area. The phasing is based on commuter volumes on the railway system and extent of corrosive decay of the steelwork observed on site.
Various types of structures at typical 67m spacing along the rail tracks suspend the electrical wires for the trains.
The appointment includes the survey of the existing infrastructure to identify the structures due for replacement. Structures with a rating of 2 or lower were allocated for replacement on more than 500 locations spread out over the 20km of railway track.
A contractor from Gauteng was appointed on a 2 year contract to the value of R80m to replace the structures. The contractor fabricates the steelwork in Gauteng and galvanizes and paints the steelwork with a Duplex paint system. All the steelwork is then transported by truck to Cape Town for erection under Permit conditions at night. Works started in July 2016 and is planned for completion in July 2018.
Camdekon Engineering (incorporated with BVi) was involved with the design and bulk earthworks and structural elements, which included reinforced concrete retaining walls and structural steel elements. The civil engineering services included roads, water supply infrastructure and sewers. The hospital resources centre building will be used for training and lecturing, and will be linked to the tertiary educational facility in Mthatha
BVi has been appointed by SANRAL for the detail design and construction monitoring of the realignment
of the N3 from Key Ridge to Hammarsdale. This critical portion of road suffers from heavy delays and congestion,
and this partial realignment forms part of the N3 capacity upgrade, while increasing road safety to users.
Our appointment includes the construction of two new viaducts, each with a separate southbound and northbound carriageway of 22.3m in width, carrying 5 lanes of traffic in both directions. The interesting and challenging aspects of designing both of these structures will be the 22.3m carriageway width, the construction sequences accommodating the current N3 alignment, and the foundation conditions of the site.
The rehabilitation and upgrading of National Route 1, Section 16 between Winburg Interchange (km 77.5) and the Winburg Station (km 89.8)
The project entails the upgrade from a 2 lane single carriageway to a 4 lane dual carriageway. The existing carriageway will also be rehabilitated in full.
Scope of work:
Construction of a second 2 lane carriageway in the northbound direction.
Rehabilitation of the existing carriageway as the southbound carriageway.
All aggregate and pavement layer material is mined and crushed on site. (Approximately 470 000m³ of rock material)
The new carriageway is constructed using rockfill from adjacent cuttings.
300mm stabilized subbase.
150mm G1 base
40mm asphalt with 20mm UTFC surfacing.
The existing carriageway is rehabilitated in full
The existing asphaltic surfacing is milled off for reuse as a recycled asphalt pavement
The existing base and subbase is insitu stabilized as the new subbase.
New 150mm G1 base course overlay.
40mm asphalt with 20mm UTFC surfacing.
Bridges and other structures:
A new road over rail bridge structure is constructed to accommodate the second carriageway.
Several large drainage structures are extended to accommodate the second carriageway.
Truck staging area:
A stop and rest area for trucks are formalised by constructing a reinforced concrete pavement of 2.4ha in size.
This project, located on the N3 National Route between Durban and Pietermaritzburg, is the largest roads projects in the history of BVi Consulting Engineers. The essence of the project is the upgrading of the existing section of roadway from a six lane dual carriageway to a 10 lane facility as well as the realignment of the section to improve level of service and road user cost.
The project is part of the larger upgrade initiative of the N3 corridor which plays a major role in freight transport between Durban and Johannesburg. These two cities are the largest two economies in South Africa and therefore the need to provide well-functioning transport infrastructure between them.
The project covers a 10,2 km section of the N11 situated in KZN just south of the town Volksrust, which is on the border with Mpumalanga. The existing road was rehabilitated and partially re-aligned in 2008 but showed signs of premature failure, requiring investigation and repair.
BVi completed the assessment and design phases of the contract and prepared tender documentation for the proposed repair work. Construction period of 7 months.
Repair work on this contract will consist of the following:
- Shallow patching (50 mm) of existing cracked asphalt surfacing;
- Deep patching (150 mm) of existing surfacing and base layer where failures have occurred;
- Application of a bitumen fog spray to seal off the existing surfacing, followed by the construction of a new bituminous seal surfacing;
- Repair of existing guardrails and fencing;
- Clearing of existing drains and the installation of new drains;
- New road marking
Where there is a road, there is BVi Roads and Rail - even to the middle of the country, at a wind energy facility (WEF) in De Aar.
BVi is assisting the client, Murray & Roberts Infrastructure, with the planning and geometric design of the internal road network, which serves as access from the major roads to the 67 newly constructed wind turbines. Technical assistance is also provided with the foundation design.
Design, construction supervision and quality control of a new National English Literary Museum, including exhibition venues, archives, libraries, auditorium, theatre, offices, etc. The design is based on 5 Star GBSA Green rating specifications. The engineering works include a civil infrastructure portal and RC framed buildings, soil nailing and tanking.
The mixed use Century City Square development, which was developed by the Rabie Property Group at a cost of R1billion, has been awarded a 4-Star Green Star – Custom Mixed Use Design rating by the Green Building Council of South Africa.
This is the first development in the Western Cape to be awarded this Custom Mixed Use tool and only the second in the country.
Century City Square consists of a Conference Centre with a total capacity of 1900 over 20 venues, a 125 room hotel, 15 000 square metres of offices, 51 apartments, showrooms and restaurants all set around a public open square. The entire development is set over a super basement and this, together with a structured parking garage, provides under cover parking for 1330 cars.
Appointed for the HVAC design of the Conference Centre, offices and parking basements.
Replacement of 4 x 1.2 mw chiller
Construction of 4.3km 80 mm dia/ 100mm Dia Ductile Iron, 8km/ 110mm Dia PVC, 3km/ 160mm Dia MPVC, 5km/ 250mm Dia PVC pipeline from various boreholes to and from a newly constructed 1.6ML Reinforced concrete Reservoir, 2 new Booster pump stations equipping of 5 boreholes, valves, chambers etc
Replacing of failed civil infrastructure to the existing complex and re-construction of failed structural elements to the buildings.
Development of Phase 1 of the Community Residential Housing Units Seshego, Limpopo. Professional services included:
GaRankuwa - Provision of Project Management Services for the execution of various Turnkey Housing / Infrastructure Projects. Number of Houses 1800. GaTsebe - Provision of Project Management Services for the execution of various Turnkey Housing / Infrastructure Projects. (Number of Houses 1400). Kopanong - Provision of Project Management Services for the execution of various Turnkey Housing / Infrastructure Projects Number of Houses: 3400
Design of mechanical ventilation system to extract fumes from the extruction plant. The ventilation system was to comply with health and safety requirement and city of cape town health by-laws. The ventilation system was to provide the workers with a conducive and safe working environment.
Engineering Design, Project and Construction Management for the Construction of a new 5MVA 66/11kV Distribution Substation for Nababeep, Springbok
Blocuso irrigation dam is lined with HDPE pipelines and has capacity of 22,5 mega litres. The Dam has storage capacity for 18 hours for the total 216 ha.
Construction of the new change house and entrance security structure at Assmang Beeshoek South Mine.
New theatre for Mediclinic Upington. Forms part of an upgrade at the Hospital, worth R54m.
Upgrading of Eskom's Karoo Substation for the Square Kilometre Array (SKA SA) Project near Carnarvon in the Northern Cape. This Substation's capacity was increased from 10 MVA to 20 MVA with a transformer redundancy of N+1 to accommodate the expected loads of the KAT7 and MeerKAT Phases of the SKA SA project.
This project also included a 33kV line specifically designed to have low RFI interference, an underground MV cable feeder and LV distribution network to each antenna at the Core Site. The total cost amounts to ±R65million and was completed in 2012.
Earthworks during construction of the Blocuso Bulk Irrigation Scheme. The infrastructure is designed to supply irrigation water to 216ha newly established vineyards.
Upgrading of main road from N7-National Road to Hondeklipbaai. Approximately 82km of which the first phase was completed in 2015 at a cost of R45m and the second phase will be completed at the end of 2016 at a cost of R 85m. This road forms part of the planned network of connecting communities on the West Coast with the National Road Network, also incorporating a tourist route.
Extension of the D300 (District Road) over 13 kilometres to service various villages in the John Taolo Gaetswe District Municipality, Kuruman. The existing gravel road was upgraded to a road with a permanent tarred service. The total cost was R18m.
Supply, deliver, install and commissioning of a 80kWp Solar Photo Voltaic Generator with grid and generator support at the Manyeding Project.
River embankment protection at Farm Raap-en-Skraap near Onseepkans. Water for approximately 300ha of export quality table grapes is abstracted at Raap-en-Skraap. The embankment protects an inlet canal from where water is abstracted with multiple pumps. The embankment juts out into the stream and without protection is vulnerable to erosion due to the high water velocities in the river. The project was funded by the farm owners Keboes Fruit Farms which is a subsidairy of Karsten Farms (Pty) Ltd.
The aim of the project was to upgrade the main excess road of Brandvlei. This road provide excess to 280 x households, 2 x churches 8 x business and 8 x business plots. During this project special attention was also given to the channeling of problematic storm water by providing kerbs, storm water outlets and improving the storm water outfall. EPWP teams form the local previously disadvantaged community completed the following work: Manufacturing and lying of Kerbs and applications of prime, stone and slurry layer (Macadam Seal) and storm water related structures. The base course was primed and thereafter 26mm stone was distributed between the kerbs. Suffacing of the base layer was done with a 30mm thick slurry seal. The slurry was mixed by hand and applied to the stone layer to form the final surfacing of the road. All of these were compleded by 55 local EPWP labour from the prviously disadvantaged community of Brandvlei. The total road area covered were 6912m² (1152m x 6m) at a total cost of R1m.
Northern access road from the R27 to Paballelo, Upington. It was an EPWP funded project. To create temporary work for the local labourers. It was necessary to pave the road with interlocking pavers. Total project cost was about R4,7m.
Upgrading of Road DR3322 from N10 intersection to Karakoel Research Station. It was an EPWP funded project. To create temporary work for the local labourers. It was necessary to pave the road with interlocking pavers. Total project cost was about R17m.
The Sedibeng pipeline project is funded by Department of Water and Sanitation. The project entails the upgrading of existing 120km pipelines from the Treatment Plant at Henkries alongside the Orange River to Springbok. The works include the replacement of existing pipelines, upgrading of 4 main pumpstations and construction of concrete reservoirs. The installation of new pipelines to the communities of Concordia, Carolusberg and Nababeep is also part of the project. The approved budget for the project amounts to R500m. The first phase of the construction of the main pipeline will be completed in May 2016. The planning and design of the next phase is already in an advanced stage and construction will commence middle 2016.
Conduct detail assessment of the existing main dry docks pumps and drain pumps. The scope also included the assessment of associated valves, motor efficiency, ventilation to the plant rooms and fire fighting capabilities and requirements.
Conduct detail assessment of the existing 10 wharf cranes. The scope also included the assessment of mechanical components, NDT, load testing and electrical supply.
BVi was responsible for the electrical and infrastructure design and contract management for the repair and renovations of various low-rise buildings.
The following services were involved:
Lighting, small power, distribution boards, lightning protection, earthing and bonding, electrical infrastructure, miniature substations, emergency generator sets, 11kV main panel, 11kV overhead line, Area lighting, HVAC, Fresh air. Wet services, kitchen equipment, extraction canopy.
Complete knockdown and rebuilding of facilities to new Engen standards including modifications to the fuel installations, parking areas and water reticulation networks.
The new 400-bed state hospital with theatres, wards, laundry, kitchen, mortuary, ambulance EMS and married quarters. The project was extended with a new 42- bed TB hospital with its own laundry and kitchen.
The Forensic Science Building is regarded as one of the most complex and technically sophisticated buildings in South Africa. Various systems were installed under the electrical and mechanical trades to incorporate the clients’ requirements. Due to the usage of the facility, high security measures were implemented inside and outside the building.
On the electrical and security side, the building is equipped with the following equipment:
Civil services for Sunningdale Phase 2
Development of the second phase of the manufacturing facility consisting of 8 000m² warehouse, 4 000m² paint line hall, 1000m² office extension, concrete hardstands.
Technical Support to the In-house Construction Unit of the Department of Roads and Public Works
New Jubilee Primary School
Replacement of asbestos bulk water pipelines
Environmental rehabilitation and redevelopment of the Kings Beach Node
Graaff-Reinet Water Augmentation Scheme for Drought Relief
The building is 8000m2 and cost +/- R105,000,000.00 it is full of architectural features which also makes it a building which is quite expensive for its size. The architectural features stand out and provided engineering challenges and therefore it is definitely regarded as a landmark:
Low-cost housing scheme (600 units)
Helenvale Thusong Service and Community Centre
Coega IDZ, Infill Consultants for Zone 7 and Zone 10. Potable water and return effluent infrastructure
Construction of a 600mm diameter steel potable water line for 6.7km, supplementing the Port Elizabeth bulk supply from Churchill Dam
350m of 315mm diam PVC sewer, 450m of 450mm diameter and 1 400m of 600mm diameter ductile iron sewer
The project includes the full consulting engineering services for the following: (1) 4 800m of 600mm dia GRP main water carrier (2) New pump station for the extraction of 2 100 m3/hr (3) New filtration installation for 2 100 m3/hr 4) New 40ML earth-lined storage reservoir
This project was initiated due to the increasing frequency of algal blooms in the Orange River due to eutrophication. The high occurrence of algae tends to block sand filters hindering the production of potable water. A dissolved air flotation plant was constructed to remove the algae from the water.
This facility consists of the following structures or process units:
Bulk water supply from the Orange River to the town of Kenhardt and Lennertsville Village. Project comprised the following major components: Raw water abstraction pump station, 3km raw water rising main, 2.4 Ml/day water treatment plant, booster pump station, 28km rising main, 300kl elevated reservoir, 48km gravity main, MV power supply line, telemetry system.
This contract is for the supply of materials, equipment, plant and labour for the construction of an earth dam reservoir, receiving water for the Kalahari East Pipe Line, a 117m x 98m rectangular earth reservoir (33 200 cubic metre) HDPE lined earth dam with floating HDPE roof cover.
The project consisted of seven storeys of residential flats and underground basement parking in Kloof Road, Sea Point.
This project comprised the complete upgrade of a rather dilapidated heritage building. It consisted of a complete makeover of the building including all the engineering disciplines.
The primary objective of the first phase was to repair the failing plaster/grano façade of the building. This became a threat to pedestrian and vehicle traffic. This phase consisted of the removal and subsequent major concrete rehabilitation to an area of 28 400m². Use was made of external scaffolding supported on a reinforced concrete canopy over the sidewalk. This structure served as a scaffold support as well as safety for the pedestrians not to interrupt the building functionality. It is to be noted that the scaffolding was to the full 26 storeys – the highest used in the Southern Hemisphere.
The second phase was for additional facilities, basement parking, upgrading of the present Keerom Street walk-through to a functional and friendly pedestrian area with a restaurant and other public facilities.
This forensic science building is regarded as one of the most complex and technically sophisticated buildings in Southern Africa. The building was planned in a five “finger” pattern for the five different departments. It is a four-storey building with basement parking adding up to 26 000m² floor area.
This project consisted of two blocks seven storeys high plus three levels of underground basement parking.
Block A – High Court Building
11 Civil Courts, 6 Criminal Courts, 14 Holding Cells, 270 Parking Bays, Consultation Rooms
Pay Hall, Judge and Clerk Chambers, Deputy Judge President Chamber, Judge President Chamber Library, Senior Registrar, Conference Rooms, Advocates and Interpreter Offices, Archives
Block B – Support Offices
Master of The High Court, Director of Public Prosecutions, Legal Aid Board Offices, State Attorney Offices
Family Advocate Offices, General Offices and Areas, Administration Offices
124 Parking Bays, Fan Rooms, Water Tank Room
The project consisted of 7 residential floors, 3 parking floors and a basement for commercial use. The soil conditions on site were unstable due to heaving and collapsible red clay, which meant that the foundations had to be piled. The building was designed to have flexible joints between columns and balustrade beams to allow for possible soil settling or heaving. The residential floors have 16m wide balconies cantilevering 3m. These large curved balconies largely contributed to the aesthetic appeal of the building and could therefore not be supported at the lower level. A unique tie system was introduced in the partition walls using a tension/compression system between the slabs all the way to the roof to support the cantilever balconies.
Mathambo – Moatize. Line Design of 66kV overhead line – 40km
Project Development and Project Management of the scope definition and design phases and cost estimation of the expansion of Ferrum 275/132kV substation and the construction of 450km 400kV Line
Design of extension of existing 220/66kV Mathambo Substation with 2x220/66kV 45MVA transformers
Design, project engineering and project management of the substation upgrade.
The project is about conducting feasibility studies on river structures and investigation on the Skoenmakers River which has been utilised as a conveyance system and spillway to Darlington Dam since 1981. The feasibility studies are necessitated by deterioration of the river channel over the years which have resulted in the erosion of the river embankments, creation of an island in the river bed, loss of vegetation, erosion of some bridge-supporting embankments and transportation of vegetation and silt downstream. Investigate the impact of water releases down the river bridge and compilation of a river rehabilitation strategy to improve access across the river and to halt further degradation of the river.
The aim of the assignment is to assist the National Water Resources Infrastructure (NWRI) in understanding the impact of water release down the Skoenmakers River in an effort to have intervention measures put in place to upgrade the river bridge structures and prevent further deterioration of the river embankments and bed to minimise the loss of human lives, livestock and wildlife in the area.
Formulation of Storm Water Management Plan:
1 ) Identify clean and dirty water areas according to GN704
2) Build a numerical hydrological model of the RLT complex in PCSWMM to quantify the runoff volumes for a 50y storm event
3) Identify and design required infrastructure like pollution control dams on a conceptual design level
4) Define scope of work of the following phases that will be required for RLT to become GN704-compliant
The project consisted of four segments:
1) Audit Stream Flood line.
2) Audit and revision of the Nkomati SWMM model.
3) Detailed design of Trench 52. 600m gabion mattress-lined canals, 2 gabion cascade drop structures (13m & 9m vertical cascades), 3 x 1 200mm haul road concrete pipe culverts with gabion head and wing walls
4) Formulation of conceptual solutions to address the GN704 compliance issues that was identified during the study
The scope of the project for project execution FEL-4 will include:
Preliminary design, detailed design and tender documentation of Matundo School Phase 1.
Upgrade, design and supervision services for the rehabilitation of the Nacopo and Nacala-a-Velha Earth Dams for water supply in the village of Meconta. The two dams are currently not in use due to degradation. Key agricultural area for rice and livestock in the area.
Infrastructure, roads, haul roads, storm water, workshop, washbay, fuel facility, offices and stock yard for the coal-handling plant.
Various areas of expertise were utilised for the upgrade of an existing paper manufacturing plant. The project required new foundations and structures surrounding the plant: conveyors, tanks, pulpers, thickeners, screens etc.
The project scope included the following:
Infrastructure for processing plant, haul roads, construction camp and new permanent housing complex.
Relocation of concrete-lined channel (4.5km long). Construction of three reinforced concrete culverts (each 60m long). Bulk earthworks design haul roads, concrete silt traps, concrete canal access ramp. Construction of 4.8km steel pipeline above ground.