Cheesegrater bolts and ‘hydrogen embrittlement’ – what you need to know

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  1. Very interesting, I wonder how much is out there waiting to happen?

  2. What was the grade of bolt used and the relevant standard, British Standard to which the bolts were purchased?

  3. A widely used and proven but not always known about method of providing anti corrosion protection to bolts such as these is Sherardizing which does not cause hydrogen embrittlement. See for more info

  4. What happened to risk management. I can’t imagine what is worse – building that size of construction not knowing, or building it knowing.

  5. who was the bolt supplier ?

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