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    Ted31's Avatar
    Ted31 Posts: 2, Reputation: 1
    New Member
     
    #1

    Dec 1, 2010, 04:55 AM
    What is the strongest way to bolt box steel to a concrete wall?
    Is it better to bolt through both sides of the box or counter drill and bolt just the side flush to the wall?
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
     
    #2

    Dec 1, 2010, 05:44 AM

    For what purpose? It mostly depends on what purpose the box will serve. A safe with have different justifications than a structural component would.
    Ted31's Avatar
    Ted31 Posts: 2, Reputation: 1
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    #3

    Dec 1, 2010, 06:48 AM
    Comment on smoothy's post
    I am lookig to erect a steel frame balcony 9 x 12 foot supported on two sides by wall fixing and the oppersite corner supported by a 4 x 4 inch steel upright
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
     
    #4

    Dec 6, 2010, 03:57 PM

    Hi all...

    If I understand your question, then drill the first side of the box steel out and secure through the side against the wall... see image... ;)

    In this manner the box steel will not compress and the bolt should stay put.

    Mark
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