EKURHULENI
Storm water upgrade to reduce flooding The main objective of the Meadowdale/Klopperpark/Harmelia/Buurendal bulk storm water upgrade is to minimise the occurrence of flooding of properties from high-intensity rainfall. IMIESA takes a closer look.
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WING TO the nature of the project, it was decided to divide it into two parts, with two separate contractors appointed for each phase. The scope of works predominantly comprised the upgrading and rehabilitation of existing storm water infrastructure, namely existing storm water open channels, retention dam, etc., and the construction of new storm water infrastructure, such as the extension of a new storm water open channel and new storm water structures. Phase 1, initially an informal channel in the Klopperpark area between Finger and Herman streets, included the construction of a formalised earth channel that started and ended with gabion lines, making. Fifty-two local labourers and 18 of the contractor’s personnel were employed. Work included the construction of approximately 1 522m³ of Reno mattress and gabions, the supply, lay and installation of pre-cast concrete portal culverts and the rehabilitation of existing inlet and outlet storm water structures. Work on the remaining channels is as follows:
Gabion walls under construciton
Upgrading of Buurendal Dam • Excavation, removal and spoil silt from dam floor. • Construction of 200 mm thick mesh reinforced concrete floor. • Construction of ± 58 m of 0.5 m deep x 5 m wide Reno mattress lined channel. • Construction of ± 51 m of 0.5 m deep
x 8 m wide Reno mattress lined channel. • Construction of 200 mm thick mesh reinforced concrete lined access ramp. • Reconstruction of damaged dam embankment wall with imported G5 material. • Hydroseeding of dam wall. • Construction of brick silt trap sumps.
Meadowdale Channel extension • Bulk excavation, controlled filling and haulage of materials to spoil/stockpile. • Construction of approximately 1.2 km of earth berms varying in width from between 1.2 m and 2 m and in height from between 0.8 m and 2 m. • Construction of approximately 472 m³ of Reno mattress and gabions. • Installation of approximately 460 m of 2.2 m-high palisade fencing.
PROJECT TEAM FOR PHASE 1 Meadowdale Channel extension and upgrading of existing Channel No. 1 (between Finger and Herman streets, Klopperpark) Client: Ekurhuleni Metropolitan Municipality: Roads Transport And Civil Works Department Client representative: Mr E Marais • Project manager: Mr I Marate • Civil engineering consultant: Infraconsult Engineering cc • Project engineer: Mr M Jansen • Resident engineer: Mr T Kent • Civil services contractor: Moseme Road Construction (Pty) Ltd • Construction manager: Mr E Brough • Site agent: Mr T Moloi • Environmental control officer (ECO): Envirolution Consulting • ECO: Mr M Tshisikule • Occupational health and safety agent: Ebenaeser Environmental Consultants cc • Safety representative: Mr R Strauss • Community of Meadowdale/Klopperpark/Harmelia/Buurendal • CLO: Ms M Simon • Ward councillor: Councillor G Gersbach
Upgrading of existing Channel No. 2 (between Minauch Street and Shelton Avenue, Harmelia) • Bulk excavation, controlled filling and haulage of materials to spoil/stockpile. • Construction of approximately 2 443m³ of Reno mattress and gabions. • Connect to and rehabilitate existing inlet and outlet storm water structures.
PROJECT TEAM FOR PHASE 2 Upgrading of existing Channel No. 2 (between Minauch Street and Shelton Avenue, Harmelia) and upgrading of Buurendal Dam Client: EKURHULENI METROPOLITAN MUNICIPALITY: Roads Transport and Civil Works Department Client representative: Mr E Marais • Project manager: Mr I Marate • Civil engineering consultant: Infraconsult Engineering cc • Project engineer: Mr M Jansen • Resident engineer: Mr T Kent Civil services contractor: GT Masilela Trading cc • Contracts manager: Mrs D Chitsike • Site agent Mr M Tembe • Environmental control officer (ECO): Envirolution Consulting • ECO: Mr M Tshisikule Occupational health and safety agent: Ebenaeser Environmental Consultants cc • Safety representative: Mr R Strauss • Community of Meadowdale/Klopperpark/Harmelia/Buurendal • CLO Ms M Simon • Ward councillor: Councillor G Gersbach
IMIESA OCTOBER 2011 - 61