Construction World April 2015

PROJECTS AND CONTRACTS PROJECT TEAM • Client: SANRAL • Consultant: AECOM/DMV Baeletsi JV • Contractor: Raubex Construction

MAIN, LEFT: Base construction in progress & RIGHT: Sub-base stabilisation in progress.

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Deck slab reinforcing in progress.

Deck slab reinforcing in progress.

Fill completed over tributary culvert area.

Backfill in progress at tributary culvert.

2 and 3, either side of the river, were founded on insitu rock. One interesting fact about the beams is that no curvature or pre-stressing was designed for, but rather reinforcing steel in tension and compression. The lifting of the beams was approached with some appre- hension by the contractor, but no sagging or positioning problems were encountered. Some challenges were encountered with the quality assurance testing on the piles. One instance was discovered where an anomaly was found on the outside of the pile. This problem was not initially identified

Baeletsi (the latter company has offices in Harrismith) submitted a comprehensive design and supervision strategy and have an equal number of personnel on site during the supervision phase. The site supervision team has also been assisted by a learner liaison officer seconded to the project by SANRAL as well as four students in training. The project engineer during the design phase was Gert Fourie of AECOM, while Werner Venter of DMV Baeletsi is the project engineer for the construction phase of the project. The project should be completed by August 2015.

by the cross-hole sonic logging test between two opposite tubes, which are situated inside the rebar cage. This anomaly was discovered when the pile was opened up prior to the construction of the pile cap. Conclusion This project is one of the first of this magni- tude whereby no stop/gos were allowed, unless where existing structures prohibits the adding of road width to sustain two way traffic. The design and construction supervi- sion by the joint venture of AECOM/DMV

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CONSTRUCTION WORLD APRIL 2015