Development Application Part 2 of 2 - Geotech Report and Plans - OPW13/0816

    ~




~
                                                                                                                                                                                                        Direct’Jts
                        S’li :-:;w’)(~y;;; E’l~iin;~B,jn9 Fty Umiied
                                                                                                                                                                                                        f"’.i Dixon                      qHOI)!;) r-<pu~
                       !-;!::3c:<;;ists in i~{mlied :)n<)t’;~a::-::(:i:                                                                                                                                 ~JTP:);..kil’’::               f<A.\)v)~~("~i!)"::’\!~f~^j. r~r:~""~{:’:",....:.1 ~
                       ..-\....B.N. 7~; {.IS4 04.1 G::
                                                                                                                                                                                                        MVGenJe                          Er.~ (CivU}i,,!8A CPf.r. ~ t,~;E }\tt~i! RPEO
                                                                                                                                                                                                        G       J Gmy
                       v.,-..;..;w.   ${:H~~:;~V0’iS. (":~T:j,I;,



                                                                                                                                                                                                        P Eliiinnl.cn                  8EiCiv!!) fvn= AIl~ RPE(~.

                                                                                                                                                                                                        h:;:~<;. ~i,~~*:;)

                                                                                                                                                                                                        J ka~~s.                       8E/~.:~(H:D::~;) f13:8
        son.StUWfXS                                                                                                                                                                                     CP ~;cE::1$::-,::              8f.=.r::~(C~vi}) RPEQ



            Gold Coast Office
           Job No:     113-15522
           Ref:        1-15522,2013-09-26, LR VER 0
           Author:     Tim Phillips


                                                                                                                                                                                                                                26th September, 2013


           G & KWhyte
           6 Glendower Street
           TOOWOOMBA OLD 4350
           Email:[email protected]

           ATTENTION:                        GRAHAM WHYTE




           Dear Sir,


           RE:    25 DOLPHIN CRESCENT, NOOSAVILLE                                                                                                         -
                                                                                                                                                                  FAILED REVETMENT WALL

           1.0    INTRODUCTION

           This report presents the results of a limited geotechnical investigation carried out
                                                                                             by Soil
           Surveys Engineering Pty Limited at the above site on the 27th August and 24th September,
           2013.


           The investigation was carried out at the request of Noosa Jetty Builders on behalf of Graham
           and Karen Whyte.


           Authorisation to proceed with the investigation was dated 21st August, 2013.


           The objective of this investigation was to assess site and subsurface conditions across the
           Weyba Creek revetment to determine the failure mechanism responsible for the collapse of
           the revetment and retaining walls, jetty and rear deck and to provide remedial options for
           reinstatement, if required, and stabilisation of the revetment profile.

           2.0    SITE HISTORY

           It is understood movement and distress first became apparent about July, 2013 with rotation
           of the jetty supports noted.


           Complete failure and collapse of the jetty, revetment and retaining walls and section of the
           rear timber deck is understood to have taken place in late July/early
                                                                                 August, 2013.

           Temporary stabilisation of the exposed soil batter has since been carried out with a surfac-
           ing of sprayed concrete across the batter face.
                                  H :"~r.,;";:f;t:.                                                  G~,.!d ":::"::!:"~?                                                                                                         ~.j~,.r,:~(":’Y!’: [,:,:;("::’:c,
                                                                                                                                                                  f..::!:".~:;,~":V
                                  !.’~:,."’::: :~’ :~i ::!:’:r;":~,:~ S:’:’:::.;::~                  U::::~, -: ’if: ~Jq:::::~,:.\ :}:’t."                         1 ~::l,l,~ ::’:;~’f’1                                         :.~~i~ -:r:, ~-:.~~ C:::’~;t::c::1;~’~~ ;.:i’~’~;::
                                 :--I~::~;’J:: :’;.::~                                               t-:pj1’p::,’1;l~ G::’J                                       (:.:~,:,-3:::: ,’~:"r::,~ 7i~::                                ’:’;-,,,:;:~:~~ :’:~,~)~;:, s..::;,:~:-: :’~ ""’~.: (.’~-:’;~:’:’
                                  ~)’:’: :!.::"{, :;,~ ’.’>                                          f,’f.~ ~1",:7 :S!’~..:’:;:                                   (,()i?: :., ~,;::~;f,                                          j’:::’.::’,:$!::l
                                  p~~~,::: :t;::::" ~..:::~: .;:’ >:                                 H:,:::~-::::!’~’".!’:d.:~ ’;’ .(~, ~:;kj ~ 212..             f,,~:::.;.::-.:!.’y ~";:~":. Q::: .::’--; :
                                 /:,:.r’::.:’,~::;.~                                                 .....:.:{..~:’;..::;;                                        f~t::~~r.:)::.:-:

                                 ~’;.?’l .:, ’: ’;’ }.:~’f::: ~/;:’;i;                                .’:’: 7:’:? :;=.::;:) :::,~t1;-:                            :"r: :.;~.? ,~ :1~/.’i.’:!’=.:f                                ;-:.r: ~; :(’ ~:{:.:~:~ ~:/. :t:
                                 ):;::x :: n J.-t:!,:;-:’ ~:~if:~}                                   F..) :;V::’ :;:.i!J:~ :,~.~::.’"                             !;:;>.< 61’... .:",,r. :J~:.,’i!;:)                            ):3’’>: i.!:.... !;~:./1; ,:~::~::
                                 ~..;’!-’.,~...:~~::;’ ~A’..!’;;:::.. ::’\’:’:)’~.:~,";I-=-:.:’::$   t~t~k~~’:~~,~~~(~~’::~,iJ:’J:g ,-=- y~.., ~,~,!,~:. .:;1.:                                                                    !’..:-d~e:’:,::,:\!:’::’~~!i;;:;;(~::~::.:: ’..-(~.....~: ~. ~~:,~..~,:
                                                                                                                                                                  f:::.:~’   V:,:y~~{:t-.:,>:!:::;.t:..,~:-~ .....~’:~~ .~~~:    :’: