Some of ARQ’s projects during Raimund’s 28 years as director of the Structures department.
Coega River Bridge; Port Elizabeth, South Africa
Upgrading of N2 near Port Elizabeth including the Coega River Bridge
Bridge Concept Design
Assignment inception and project coordination
Project layout and General Field Arrangement
Materials and Geotechnical Investigators
Hydrology, Sedimentation and Hydraulic studies
Preliminary Design
Tender Design
Preparation of Engineer’s Cost Estimate
Engineering and Construction Programmes
Contract Procedures and Project Management
Detailed Design and Construction Drawings
Post Construction Services
Preparations of Reports
Construction Supervision and Contract Administration
Rigel Avenue Bridge No B472
This is a 53m long, two span bridge over the N1 freeway. The original bridge deck was 17.4m wide and the widened deck is 27m wide. 3m wide triangular shaped flares were also added at each of the four corners to facilitate the new single point interchange. The widening incorporated precast concrete U beams in the deck that kept interference with the traffic on the N1 to a minimum during construction.
Ethekwini BRT
ARQ was appointed to do the detail design and site supervision of the Highway Structure along route C3B (Pinetown to Umgeni River). It involved the preparation of the tender documents for the St Johns underpass, design and preparation of the tender documents for the retaining walls on Contract 1T12938, 39 and 40; and the preliminary design of 11th Avenue intersection.
General site monitoring which involved, site establishment, quality control procedure approvals, concrete mix design test and approvals, pre- and post concrete inspections, locating of services, compiling site instructions as well as Project Management for the high voltage power line relocation, medium voltage power line relocation, Telkom line relocation, Neotel, Vodacom & MTN communication line relocation, water line relocation, sewer line relocation, negotiations and acquisition of PTO’s (permission to occupy) from private property owners adjacent to the route.
ARQ is responsible for implementing proto type bus station development and coordinating the implementation of the construction; full life cycle of smaller sub-contracts entailing the following aspects: inception, concept and viability, design development, documentation and procurement, contract administration and close out.
Matsapa Circle Bridge in Swaziland
ARQ were appointed by the contractor to produce the designs for these bridges.
Improvements at Rustenburg Interchange
The existing Rustenburg Interchange on the N4 freeway needed to be upgraded due to the high volumes of traffic. Originally the bridge was a single span bridge passing over a single carriageway of the N4. For the upgrade a two carriageway road needed be provided over the N4 and the bridges had to allow for the future doubling of the N4. Basically one and a half bridges need to be built.
Construction of the bridge needed to be done over traffic and this was done using a mega girder system. The deck also needed to be built at a higher level (some 500mm higher) and was lowered using a jacking system.
Nels River Bridge Emergency Repairs on the R37, Nelspruit
In November 2011 ARQ was appointed by SANRAL to carry out the design and site monitoring of the emergency repairs and widening of the Nels River Bridge near Nelspruit. This work as well as the widening of a few other bridges on the road was constructed under a contract to the value of R 60 million.
Atterbury Road Bridge No B0077
In the past two 13m wide bridges about 75m long took Atterbury road over the N1 freeway. These bridges were demolished for various reasons and a new 4 span bridge, 42m wide and 83m long was built. Special care needed to be taken with the phasing of the construction in order to accommodate the traffic over the bridge. Precast concrete U beams were incorporated in the deck construction.