Corestruc supplied 86 bridge beams to the Road Agency of Limpopo for its two new all-weather structures over the Molototsi River on roads D3212 and D3213 at Ga-Ntata.
A total of 48 pre-cast concrete beams were manufactured and placed to support the deck of the main 96 metre (m)-long structure and 48 were installed at the other 76 m-long bridge. The bulk of them are 24 m long with some 27 m, and they vary between 50 MPa and 60 MPa.
Based on Nyeleti Consulting’s design requirements, the elements were pre-formed with holes through which transverse reinforcement has been installed to brace the structures. The main contractor, Axton Matrix, then fills the spaces between each pre-cast concrete unit to produce a robust concrete slab.
The consulting engineer also specified an extremely slender profile for the bridge beams. We achieved this by paying meticulous attention to the detail of the design of the pre-stressed cables prior to manufacturing.