1-22276-01 site plan

Project No. 1-22276                                                                                                                  Page | 32
February, 2020
Ref: 1-22276, 2020-02-28, BR VER 2
Wessel Petroleum Pty Ltd – GEOTECHNICAL INVESTIGATION - Proposed Service Station Reconstruction, 52-54 Mary Street and Weyba Road,
Noosaville




    6.8 Site Management
It is important that proper site management methods be observed for the existing soil conditions
by both the builder at the time of the construction and the owner(s) throughout the life of the
proposed development.

Particular reference to site management matters is set out in AS 2870-2011. It should be noted
that where proper site management, particularly with respect to change in moisture conditions,
is not followed, the foundation recommendations contained in this report could be considered
void.

The following are some specific comments with respect to site management and the reader is
also directed to CSIRO publication, “Foundation Maintenance and Footing Performance: A
Homeowners Guide” (Building Technology File 18) for further information:-

          It is important that the site be well drained. The ground around the structures should
           slope away at 1 in 50 for 3 metres and then fall to the stormwater system to prevent
           ponding of water adjacent to the structures.
          It is recommended that service trenches under the building be minimised as disruption
           or breakage of these service building lines could lead to saturation of the under slab
           material resulting in an increase to moisture condition. If this were to occur, all footing
           recommendations contained within this report would be void.
          Roof downpipes and garden taps should not be allowed to saturate founding soils.
          The importance of avoiding leakage from underground services and drains near the
           structures is stressed. Any leaking services or blocked drains should be remedied
           promptly. It is advisable to use flexible joints, allowing horizontal and vertical movement
           where service pipes pass through the foundation structure (floor and slab). The bases of
           services trenches should fall away from the building.
          Do not let the slab subgrade "dry out" prior to casting.
          Footings should be placed with minimal delay after excavation to avoid desiccation or
           wetting of the founding soils. If footings cannot be poured on the same day as
           excavation, a blinding layer of 50mm thickness is recommended. Piers should be
           poured immediately following excavation.


7.0 CONSTRUCTION INSPECTION
It is recommended that placement of all structural fill, footing excavations, and cut batter slopes
in soil together with building and pavement subgrades should be inspected by Soil Surveys
Engineering Pty. Limited. or a duly qualified Geotechnical Engineer. Should subsurface
conditions other than those described in this report be encountered, Soil Surveys Engineering
Pty. Limited. should be consulted immediately and appropriate modifications developed and
implemented if necessary.




                                                                                                            SOIL SURVEYS