Foundation for Komori L440

Discussion in '4-Color Offset Presses +' started by cooladi006, Apr 19, 2015.

  1. cooladi006

    cooladi006 Member

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    I have just now loaded my Komori L440. It seems that the machine is not on zero level and probably should have slightly immersed because I have recently levelled the ground due to it being uneven and not at zero level. Probably because of the new levelling foundation. So Komori was then adjusted with the bolt at its legs and made to zero level. Now for the past 2 days nothing has happened and it's still at zero level. Is there any chance of a risk the machine may get further immersed down as time passes by due to vibration at high speed ?

    (Info : Foundation starts with 20 Feet Clay and on the top of the clay is 4 Feet of Rubbish gained from breaking Brick Walls and at last on the top, 5 Inches of hard concrete)
     
  2. junker1984

    junker1984 Senior Member

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    When comparing what you have under your machine to manufacturers recommended minimums, your machine is in jeopardy. I have no experience in installing Komori, but as other manufacturers recommend solid subsurface with poured, double reinforced 12" of concrete, your foundation is seriously lacking. Especially with the crushed concrete bearing the weight of the slab and machine.
     
  3. cooladi006

    cooladi006 Member

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    Ok. So does it mean that if I add another 7" of Concrete on top of 5" concrete, then things should be safe or it still won't matter because of the crushed bricks 4 Feet surface below the concrete ?
     
  4. aqazi81

    aqazi81 Senior Member

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    I agree with Junker, the crushed bricks are a concern to me, bcoz it can settle as time passes by and your machine level can go uneven.
    What type of leveling instrument are you using? Is it 0.02 or 0.04 mm?
     
  5. Brian@sellyourpress.com

    Brian@sellyourpress.com Member

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    That pad is definitely not adequate. As stated above 12" with rebar would be necessary for a press like that.
     
  6. er.bajaj001@gmail.com

    er.bajaj001@gmail.com Member

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    hi you did not tell that what type of bars are you used in concrete. if you wann any help you can contact me on 8106666607. m frm hyderabad.
     
  7. praba425

    praba425 Member

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    You need to focus two things while deciding your foundation area below the machine
    1. It should have better compression strength with heavy duty concrete of industrial grade. Your PCC or RCC should not compress more than 0.03 mm as your gear backlash are within that range
    2. Your soil below the concrete should have 97 proctor density with high compacting percentage. Better to do soil test with your civil structural engineer and decide the foundation preparation below your concrete. Clay and silt sand are not good for your soil filling below the foundation area. Need to remove those sands and fill with boulders, sand and gravels to high compacting density. Then make PCC one layer and above that RCC minimum 1 foot for even load distribution. Clay in your area will absorb water if your ground water level increases and make your floor to sink with machine load and destroy your machine level. If clay is too deep in your region, go for pile support for the PCC and then RCC over that. Bit expensive but a permanent solution.
    Please feel free to contact me @ +919790922704 for further assistance if any.
     

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  8. printingfactory

    printingfactory Member

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    why note contact the machine factory to give you help by remote access ?
     
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