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Flood Barrier Doors

  • 16-03-2014 3:07pm
    #1
    John Electrician
    Registered Users, Registered Users 2 Posts: 25 ✭


    Hello All

    I am looking for three flood barriers - two on entrance to lifts in underground carpark (approx 4 foot wide) and one for a doorway which leads to Esb meter rooms (standard size doorway)
    Anyone suggest how to make something DIY version - there is a company selling these products but cost over €400 and seem way overpriced.
    Any advise etc would be appreciated.


Comments

  • #2
    gutteruu
    Registered Users, Registered Users 2 Posts: 1,061 ✭✭✭gutteruu


    I seen houses that have slots fixed into wall either side of door, so when you think a flood is coming you just slot a sheet/door into place.


  • #3
    John Electrician
    Registered Users, Registered Users 2 Posts: 25 ✭John Electrician


    Yes thats what i am looking for - they are about €300 to buy - anyone know how to make a DIY version


  • #4
    slimjimmc
    Registered Users, Registered Users 2 Posts: 7,786 ✭✭✭slimjimmc


    John Electrician wrote: »
    Yes thats what i am looking for - they are about €300 to buy - anyone know how to make a DIY version

    What depth of water are you aiming to protect against and how much time will you have to react ?

    It's only an idea but you could screw 2 angle-iron uprights to the reveals and seal gaps with silicon, then any time a flood is expected you could bolt a length of timber plank through pre-drilled holes in the uprights.

    A piece of rubber hose screwed to the underside edge of the plank to aid the seal along the door cill, and something similar to seal the contact surface between the plank and uprights. It won't be easy to get a water-tight seal along the cill.

    A sheeted metal frame would be better than a plank but more expensive.


  • #5
    John Electrician
    Registered Users, Registered Users 2 Posts: 25 ✭John Electrician


    Thanks for reply. Water depth will only be about 3 foot. Any pictures of this in operation


  • #6
    slimjimmc
    Registered Users, Registered Users 2 Posts: 7,786 ✭✭✭slimjimmc


    John Electrician wrote: »
    Thanks for reply. Water depth will only be about 3 foot. Any pictures of this in operation

    No sorry, it's all in my head. :)

    3 foot is quite a depth and will apply quite a bit of force, especially on the 4ft wide barrier.

    From my calculations (which may be wrong) 3 foot of water will exert about 1160 pounds (526 kg) of force on a 4 foot wide barrier, and a little over half that for a 2.5 wide door. That's assuming the water is static. If the water was flowing towards the barrier the pressure could be more.

    2 foot of flowing water can easily move a car with a little help from buoyancy.

    http://www.education.com/study-help/article/calculus-help-hydrostatic-pressure/


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