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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

Buy individually or both books together. Delivery is free!


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    • CommentAuthorRex
    • CommentTimeSep 22nd 2020
     
    What ho one and all,

    We watched a TV documentary recently, called, Women Who Kill. It is about women who have killed their husbands!

    In one case, may be not fully intentional, but living on the 17th (may have been 24th, don't recall) floor, she pushed her hubby who stumbles against the window which broke and you know the rest.

    So I was thinking about my own house, with considerable window area, albeit only g/f and f/f. I have 3g and believe it is toughened glass.

    Whilst not worried about my wife pushing me into the glass, how difficult (or easy) is it to break toughened glass like this? I was under the impression that it was difficult, partly as a security measure to stop intruders.

    In the TV program, I am surprised that the glass would break so easily; but may be it was not toughened! But what do I know?

    Thanks and toodle pip
    • CommentAuthorowlman
    • CommentTimeSep 22nd 2020 edited
     
    All the sealed units I've ever fitted have been toughened, and marked as such, same goes for all door glass. However, I have only fitted made to measure, bespoke sealed units or door panels, so easy to spec.
    In house glass cut and bought from the local glazing supplier isn't toughened, unless specially requested, and then its bought in.
    •  
      CommentAuthordjh
    • CommentTimeSep 22nd 2020
     
    Posted By: RexIn the TV program, I am surprised that the glass would break so easily; but may be it was not toughened!

    It would be pretty obvious. Normal glass breaks into shards in the usual way. Toughened glass breaks into thousands of small particles with no sharp edges. Broken laminated glass [should] stay stuck to the lamination plastic.

    The rules for when to use safety glazing is in https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/443181/BR_PDF_AD_K_2013.pdf and specifically Diagram 5.1 on p31.

    Safety glazing should be marked. It's possible to get triple glazing with various combinations of glass types, so you need to check the specs and/or markings on yours.
    •  
      CommentAuthorfostertom
    • CommentTimeSep 22nd 2020
     
    Posted By: owlmanAll the sealed units I've ever fitted have been toughened, and marked as such
    I'm surprised at that, as when I spec custom windows, glazed units are float glass as standard, and have to be specially speccd as 'safety glass' (which may be either toughened or laminated) in locations where necessary according to Bldg Regs.
    • CommentAuthorphiledge
    • CommentTimeSep 22nd 2020
     
    AFAIK toughened glass is easily broken with a concentrated blow from a centre punch but very difficult to break with a less concentrated blow from someone falling against it. I think the panes in double or triple glazing are even stronger as adjacent panes support each other with a cushion of lightly compressed air/gas between each pane.
    • CommentAuthorRex
    • CommentTimeSep 22nd 2020
     
    From the police footage of the interior of the 17th floor apartment in Tulsa, Oklahoma, thee were large 'lumps' of glass still in the frame. So i can only assume that when this building was erected, toughened glass was not the norm.
    • CommentAuthorgyrogear
    • CommentTimeSep 23rd 2020
     
    Posted By: Rexa security measure to stop intruders


    for that you need FEBR ("forced entry, bullet resistant")

    gg
    • CommentAuthorwholaa
    • CommentTimeOct 20th 2020
     
    • CommentAuthorCWatters
    • CommentTimeOct 23rd 2020
     
    Did this happen ?

    https://www.hbdonline.co.uk/news/how-will-building-regulation-part-q-affect-glass-and-glazing/#:~:text=In%20layman's%20terms%2C%20all%20PVCu,glass%20and%20shootbolt%20locking%20mechanisms.&text=The%20entry%20level%20for%20a,rating%20rather%20than%20its%20thickness.

    "How will Building Regulation part Q affect glass and glazing"

    "With part Q of the Building Regs coming into force from October 2015, and the industry required to be fully compliant by October 2016, developers should be introducing compliant products to sites over the next few months."

    "In layman’s terms, all PVCu windows will require laminate glass and shootbolt locking mechanisms."
    • CommentAuthorMike1
    • CommentTimeOct 24th 2020 edited
     
    Posted By: fostertomwhen I spec custom windows, glazed units are float glass as standard, and have to be specially speccd as 'safety glass' (which may be either toughened or laminated) in locations where necessary according to Bldg Regs.

    That's been my experience too. I've specified for years that the outer pane should be laminated, as a minimum.
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