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Report - Got Wood (CSO's), Heywood - September 2011.

Discussion in 'UK Draining Forum' started by Ojay, Nov 1, 2011.

  1. Ojay

    Ojay Admin
    Staff Member Admin

    Nov 24, 2008
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    Got Wood (CSO's), Heywood

    Here goes..

    Whilst I was laid up I did a fair bit of research into new stuff, some of which has paid off and I've already thrown pics here and there..

    This place was no exception, I stumbled upon this place last year - A cluster of manholes and control kiosks in the Heywood area

    After a couple of daytime recces, the place was well travelled with human traffic, even at night the foot path seemed reasonably busy :banghead

    I put it on a backburner, until I recently saw some pics from ConcreteJungle and just knew it was connected to this place

    (Bugger this guy is on it and claimed it as 'Got Wood' fairplay) :p: :thumb

    All things aside I decided to give the place a once over anyway.

    A night visit with my mate seemed like the best plan, our usual 'tools of the trade' were somewhat insufficient, so with a bit of improvising I managed to shift a lid and head on down whilst my mate stayed terraferma

    I had a quick poke around, took a few pics and headed home.. not happy with a rushed job or my initial pics really :(

    The next morning I noticed my lens cap was missing, so assumed it had dropped off the night before.. Perfect excuse for a re-visit

    Due to the design of the entire system it's difficult to actually access one of the sewers for a proper look, but what we appear to have here is 2 trunk sewers with 3 overflows, or even a 3rd newer/mid level sewer ?

    I delayed posting this, as I was planning on going back and roping down into the overflow to see what's what, but I simply haven't had the time or the inclination to bother!

    The whole place has been revamped over the last decade or so with the addition of concrete and a further inspection chamber

    Despite additions over the years there is still evidence of the older brick system, although the original overflow has been bricked and replaced with a concrete drop shaft which eventually leads on down to the river

    I'll try and better explain it with some pics...

    The upper sewer is accessible by roping down this manhole, which leads to a small storm tank upstream


    Lifting another heavier lid, revealed some rungs down a 12ft shaft which which revealed a small screening chamber to which the upper sewer passed through

    When the sewer reaches capacity, it overflows both sides of the slots above it (as seen in the picture below)

    During normal flow the sewer passes over head through the 4ft concrete channel


    A 10ft set of ladders draped with fanny plasters leads to the overflow below


    Ahead, the overflow continues over a 3ft concrete barrier


    Before out falling into another much older tunnel


    Climbing out into the connecting tunnel, it was rather slippery, and it appeared to have recently overflowed after a solid week of heavy rain

    Here, evidence of re-enforcement as concrete had partially covered the much older brick lined tunnel


    The noise was overwhelming as multiple sewers thundered by whilst making my way up the tunnel

    As I clambered over the chain I slipped in the fatty deposits and rolled into another much larger and older inspection chamber

    Constructed of blue brick, multiple ladders via a gantry led to a large bolted manhole above


    After climbing back down, I headed into a 5ft RCP, which marks the end of the connecting overflow


    A quick stoop leads through to a lower level Sewer & CSO/Screening Chamber, not very pleasant in here so I didn't hang around


    I headed back down the older connecting brick/concrete overflow tunnel which revealed a much newer and larger concrete drop-shaft

    (It was probably a good 15-20ft via 2 landings and 3 ladders to a large and heavy manhole above, which again wouldn't budge!)


    Running down one side of the shaft was a plughole type overflow, presumably from the much speculated '3rd mid level sewer'

    Here it is from the TOP


    And looking up from the BOTTOM


    I did plan to re-visit to see what lies beyond here, but so far simply haven't had the time :popcorn

    At the end of the connecting tunnel, ahead of the final overflow is another shaft

    During capacity the 2 sewers discharge their load beyond the jam-rag pole in the picture below


    And down a further 10ft shaft


    Below is the much older Outfall, which is quite deep and filled with arse soup (yummy!)


    One day I will return to satisfy my curiosity :tumbleweed​
    #1 Ojay, Nov 1, 2011
    Last edited: Nov 1, 2011

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  2. diehardlove

    diehardlove 1 of them cnuts off 28dsl
    Regular User

    Aug 10, 2009
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    Nice one ojay that last pic is lovely,Whats the deal with the walls in the last pic almost looks black ?. What is it ? what was it ? Has it always been a outfall ? never seen anything like it but not done many drains sewers etc.
    Do you see many outfalls anything drain wise/sewer wise like that ?
  3. concreteJungle

    concreteJungle 28DL Regular User
    Regular User

    Oct 24, 2008
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    I really like this setup, there's so much to see without the usual slog in between. Nice to see some different angles on the place :)
  4. Ojay

    Ojay Admin
    Staff Member Admin

    Nov 24, 2008
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    Cheers CJ, and well done again for hitting this up yerself mate :thumb

    @DHL, yes the final Outfall is blasted through rock, it's like being in a mine/cave at times with it's composition, certainly an interesting setup.

    I would like to see the fucker when it's oveflowing (obviously looking down from that big drop shaft) :popcorn
  5. TheVicar

    TheVicar Loyal to the Drain
    Regular User

    Sep 16, 2007
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    Here's my pics from the other night - was a nice clean drain. I would have taken more if my tripod hadn't broken while I was in there so these were the only decent ones.





  6. Ojay

    Ojay Admin
    Staff Member Admin

    Nov 24, 2008
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    Having been here a few times now, more recently with TheVicar I decided it was a good opportunity to stop being lazy and finally check out the 3rd, much newer overflow

    We know there are 2 trunk sewers that flow through here, but was there a 3rd?

    After roping down the overflow from the mid level inspection chamber as in the BELOW PICTURE the mystery was finally solved..


    Down we go

    (pict0r by TheVicar)


    The only way safely down was rope access, which led into a 4ft RCP around 100 yards it curved left and terminated into a medium sized screening chamber



    The noise was immense, as I soon discovered why when I climbed up onto the gantry which gave way to a 6ft RCP outfall into a 4m trunk


    As I suspected, there are only 2 sewers here

    This screening chamber has been added in the last couple of years to filter out the solids

    It's slightly up-stream of the high level sewer in the pic below (I had previously roped down further downstream through the rungless/ladderless manhole)


    Massive shouts to TheVicar, nothing short of boring to most people I know, but I just had to satisfy my curiosity :thumb
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