RFI 10.03.2020 - Appendix C - Memorandum cooroibah waterway crossing · MCU16/0099.01

There is little to no indication that formwork was used with no straight or flat edges. The concrete
  finishes appear to be spread by hand, with no assurance that correct compaction techniques were
  applied.
◼   The concrete extends up to the fence line for most of the length of the crossing.
◼   The concrete along the fence line is overlain with topsoil and grass cover that has formed over time
    from flooding. A DCP test undertaken in this location found that the DCP refused at 0.15-0.20m bgl
    (below ground level). Figure 4 is an image of the crossing along the fence line.
◼   The concrete is built up along the dam edge on the southern side with an approximate 200-500mm
    difference between the rest of the crossing. Figure 5 presents a view of the concrete built up along
    the dam edge on the southern side of crossing.
◼   Approximately 0.5m difference in the level between the two dams/waterways on each side of the
    crossing.
◼   No major cracking and very minimal crumbling was observed in the concrete.




                              Figure 4: View of crossing along the fence line




                                           Project 239146 File 247473 Cooroibah Waterway Crossing_Rev0.docx 2020-02-192020-02-19 Revision A Page 4