1-22276-01 site plan

Project No. 1
            1-22276                                                                                                                    Page | 17
February, 20
           020
Ref: 1-22276,
           6, 2020-02-28, BR VE
                              ER 2
Wessel Petrooleum Pty Ltd – GE
                             EOTECHNICAL INVE
                                            ESTIGATION - Propo
                                                             osed Service Statio
                                                                               on Reconstruction, 52-54 Mary Street aand Weyba Road,
Noosaville




          Adopt a nominal
                     n     CB
                            BR value o
                                     of 5.0% for design (tto be conffirmed based on site
                                                                                       e
           conditions).
          It is expectted that the
                                  e majority, iff not all of the site will be clearedd following demolition..
           Also, all sooils contain
                                  ning organicc and deleterious mattter should be strippe       ed from thee
           construction area. This material iis not considered suitable for reusse as structural fill.
          Proof roll building
                      b        and
                                 d pavement constructio  on areas (if appropriatee) using a vehicle
                                                                                            v       with
                                                                                                       h
           a tare of at least 5 to
                                 onnes, unde er the supeervision of Soil
                                                                     S Surveyss Engineering. Areass
           demonstratting excessive moveme    ent under proof
                                                        p      rolling should be treated (dried/wateredd
           and recom mpacted) if possible, o or removed d to compe   etent materrial and repplaced withh
           compacted select fill, as detailed d in the following sec ctions. Treaatment shouuld be to a
           standard sufficient
                      s         soo that the subgrade passes
                                                         p         pro
                                                                     oof rolling aand that th
                                                                                            he project’ss
           compaction n specifications can b be achievedd. In areas of cut, thee proof rolling may be  e
           deferred to after the cu
                                  ut operation
                                             n.
          Any fill matterial encou
                                  untered sho ould be cons  sidered unc
                                                                      controlled a nd requiring
                                                                                              g treatmentt
           (i.e. excavaate/conditio
                                  on/replace/ccompact as   s required). The degreee of treatm ment workss
           should be decided
                       d        on site by Soill Surveys Engineering
                                                          E            in conjuncttion with oth
                                                                                              her relevantt
           parties at th
                       he time of th
                                   he civil worrks. Refer to
                                                           o comments s above in thhis section in relation t
           partial subggrade replaccement.
          Depression  ns formed by  b the remo  oval of und
                                                           derground elements,
                                                                     e         vvegetation, etc. should
                                                                                                      d
           have all dissturbed, we   eakened so oil cleaned out
                                                            o and be backfilled wwith compaacted selectt
           fill as detailled in the fo
                                     ollowing secctions.
          Excavation sides on site
                                  s where n  not supported/retained, etc. shou ld be bench hed to "keyy
           in" backfill material and optimise ccompactionn. The benc ches should slope backk at 1V:10HH
           and be at least 0.5m wide.
                                   w     Wideer benches to accommodate the w    width of the
                                                                                           e roller mayy
           need to be adopted in some situa  ations. Figurre 2 refers.




                                                                                           1
                                                                        10

                                                                 Min width 0.5m
                                                                           0




                                                                   FIGURE 2

          Survey of the subgrade surfa ce (i.e. su         urface folloowing strippping, demolition and d
           preparation  n) is recommmended; this survey     y will alloww accuratee identificattion of the
                                                                                                         e
           fill/natural interface and assist witth constructtion of the proposed
                                                                        p        buuildings.

           6.2.6       Matterial Usag
                                    ge and Fill

          From a geo otechnical perspective
                                 p         e, the insitu soils, wherre free of orrganic and deleteriouss
                     m be used for structtural fill pro
           material, may                                ovided the moisture
                                                                     m         coontent of th
                                                                                            he soils, on
                                                                                                       n
           placement, approximates the OMC (Opttimum Moiisture Conntent) appropriate forr



                                                                                                             SO
                                                                                                              OIL SUR
                                                                                                                    RVEYS