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Thread: How much vinyl is too much vinyl for an upstairs room?

  1. #1
    Join Date: Sep 2012

    Location: London

    Posts: 418
    I'm Nick.

    Default How much vinyl is too much vinyl for an upstairs room?

    It's not a riddle, it's a genuine question lol

    Recently recovered a whole load of my old vinyl from a storage unit where it had languished for several years while we looked for a bigger house with room for it! (that's not to say I went without vinyl during that time, but WAF would only stretch to the essential 1000 or so LPs I couldn't be parted from)

    Having finally found a house and moved earlier in the year, I now have a 2nd floor 'man-cave' where all the precious vinyl treasures can rest with no negative WAF. I'd like to install some floor-standing plywood vinyl storage boxes along one wall. Probably 3 rows of 4 boxes, with approx 100-150 LPs in each. Then I started to worry about the weight of all that vinyl bearing down on the floor and the ceiling below? At a rough estimate of 1500 LPs, av weight 150gm, that's approx a quarter ton of plastic all in one spot, plus storage boxes.

    Now, the house is old (Edwardian) and very solidly built indeed. The floors have pine boards of 20 or 25mm thickness, and there's a void beneath them with solid joists running between the floor and the ceiling of the rooms below. The shelves will run alongside a load-bearing wall which is supporting 2 huge watertanks in the loft that must weigh in at a couple of tons when full of water. I would imagine that the joists are connected to that solid wall under the floorboards so I feel slightly more confident putting the shelves there than say in the middle of a room, not that I would do that anyway, but you see my point.

    At the moment the boxes are spread out to spread the weight. Can any structural engineers out there tell me, do I need to worry about that kind of weight? I mean, in the 2nd floor room next door I have a huge old wooden desk loaded with stuff that must weigh more than 150kg and I don't see any bending or flex in the floorboards there.

    Do I need to worry about reinforcing the floor first?

  2. #2
    Join Date: Jan 2009

    Location: Essex

    Posts: 20,337
    I'm openingabottleofwine.

    Default

    I wouldn't expect you to experience any problems if you have the record cases laying alongside the load-baring wall. 225Kg may seem a lot, but your two water tanks, if they have a capacity of 1 cu metre, will when full, present a load of 1,000Kg each
    Barry

  3. #3
    Join Date: Nov 2011

    Location: Seaton, Devon, UK

    Posts: 1,717
    I'm Adrian.

    Default

    Hello, Iím not an engineer but my Dad was structural and civil, and always said donít guess, work it out. You need to know the depth and width of the floor joists and the type of wood, you can then look up the breaking strain value. You need to know how far apart the centres are, and similarly the plank thickness. The load bearing wall thickness and what itís made from (brick). You then need to put these figures into some applied maths calculations, with the distance along and out from the wall the records will be. This will tell you the max value you can have before it falls down, usually you keep at least 20% below that.

    Try this https://www.hunker.com/12484662/how-...-bearing-beams
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  4. #4
    Join Date: Jan 2008

    Location: Out on the wild and windy moors Lancs / Yorks Border

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    I'm Andy.

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    Domestic properties are designed for 1.5kN/m2 which works out to be 153kg/m2.

    So work out the total weight of your lps and divide that number by the area the boxes occupy as a footprint plan on the floor and provided it does not exceed 153 then you need not worry.

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  5. #5
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 25,410
    I'm Martin.

    Default

    Quote Originally Posted by Andy831 View Post
    Domestic properties are designed for 1.5kN/m2 which works out to be 153kg/m2.
    .
    Was that also true in the Edwardian era or is that the modern spec?
    Martin



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  6. #6
    Join Date: May 2015

    Location: Sussex By The Sea

    Posts: 185
    I'm Paul.

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    My experience of Edwardian properties are that they are very well built, my only query would be (and this would apply to all properties), Have the floorboards been taken up and relaid correctly? as they often are taken up to rewire, re-plumb or for timber treatment. Have the floorboards been cut on the joist or to the side of the joists? in which case often than not poorly fitted battens are screwed to the side of the joist and board placed back on it instead of directly centred onto the joist could have a major effect on the integrity of the floor, Also if a number of boards have been cut and taken up on one joist in a line as opposed to staggering the floorboards on different joists could also have an effect on the integrity of the floor. Has it been checked for woodworm/Beetle ? and finally depending on which way the joists run try and place the storage centrally over the joists to take the weight and not between the joists.
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  7. #7
    Join Date: Sep 2012

    Location: London

    Posts: 418
    I'm Nick.

    Default

    I don't know about Edwardian breaking strain specs but this house is very solidly built indeed, much more so than more modern places I've lived in - not a piece of plasterboard in sight, the whole thing is built of brick and solid timber.

    Andy: I'm pretty hopeless at maths but the dimensions of the record storage unit are 48cm x 33cm and the footprint will be 4 of them in a row. Total weight estimated 225kg.

    I calculate the footprint to be 0.63m2. 225 divided by 0.63 gives a result of 357.1kg/m2 or more than double the modern spec! Or have I made an error in my maths? (quite possible)

  8. #8
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 25,410
    I'm Martin.

    Default

    I calculate each storage box occupies 1/3rd of a square metre. so 3 boxes per square metre at a weight of approx 55 kilos each is 175 kilos per square metre. So over spec. Is each box really 55 kilos? Seems like a lot.
    Martin



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  9. #9
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 25,410
    I'm Martin.

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    Reminds me of when I used to work at Gateway. There was an upstairs warehouse and a big sign across one of the beams said 'Caution: Maximum Load On This Floor Not To Exceed 250 Tonnes.'

    Underneath it written in marker pen was 'Good luck!'
    Martin



    Current Lash Up:

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  10. #10
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 55,871
    I'm Grant.

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    don't see any issue. if it cant take 250kg it should be knocked down. hell thats just a little over 2 of me. so if 2 biggish folk stood upstairs, will the floor give way? i doubt it.
    Regards,
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