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  1. #1
    Join Date
    Mar 2007
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    Spring City/Surrounding Philadelphia area
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    Default Carriage Bolts Are Overrated

    Why use a couple carriage bolts when you can just pound in 30 nails instead?

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  2. #2
    Join Date
    Mar 2007
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    Succasunna NJ
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    577

    Default Re: Carriage Bolts Are Overrated

    Darren www.aboutthehouseinspections.com
    'Whizzing & pasting & pooting through the day (Ronnie helping Kenny helping burn his poots away!) (FZ)

  3. #3
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    Default Re: Carriage Bolts Are Overrated

    I don't know Darren. I really like the nails .


  4. #4
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    Oct 2003
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    Rockwall Texas
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    4,521

    Default Re: Carriage Bolts Are Overrated

    Nick,

    A realtor would say "The deck sparkles like diamonds in the sunshine."

    rick


  5. #5
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    Mar 2007
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    Santa Rosa, CA
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    Default Re: Carriage Bolts Are Overrated

    Well, investigation done by some structural engineers after the last couple of CA earthquakes has shown that nails do a better job of resisting seismic movement than bolts. This seems to be because bolts concentrate the force in a small space while the nails are spread over a larger area. Studies that I have seen of mudsills in homes that collapsed after an earthquake showed the mudsill ripped down the length along the line of holes for the anchor bolts. Larger washers (bearing plates) used on mudsills helps to distribute the stress over a larger area around the hole. Failure of hold-down hardware was also attributed to failure of the wood because it split along the bolt line. The hold-down hardware that is nailed often faired better. Of course, I realize the wood in Nick's pic is split and will probably split more.

    Department of Redundancy Department
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  6. #6
    Join Date
    Mar 2007
    Location
    Fletcher, NC
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    28,032

    Default Re: Carriage Bolts Are Overrated

    Come on guys ... they just got their nail gun and were practicing in that corner before they started nailing the rest of the deck. Sheesh ... you guys are soooo picky.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  7. #7

    Default Re: Carriage Bolts Are Overrated

    Well, investigation done by some structural engineers after the last couple of CA earthquakes has shown that nails do a better job of resisting seismic movement than bolts. This seems to be because bolts concentrate the force in a small space while the nails are spread over a larger area. Studies that I have seen of mudsills in homes that collapsed after an earthquake showed the mudsill ripped down the length along the line of holes for the anchor bolts. Larger washers (bearing plates) used on mudsills helps to distribute the stress over a larger area around the hole. Failure of hold-down hardware was also attributed to failure of the wood because it split along the bolt line. The hold-down hardware that is nailed often faired better. Of course, I realize the wood in Nick's pic is split and will probably split more.
    Bolts used in conjunction should work better then.


  8. #8
    Join Date
    Mar 2007
    Location
    Santa Rosa, CA
    Posts
    3,154

    Default Re: Carriage Bolts Are Overrated

    Quote Originally Posted by Brandon Whitmore View Post
    Bolts used in conjunction should work better then.
    Maybe, but if you look at the Simpson Strong-tie specifications on the hardware that has bolt holes as well as nail holes, the instructions indicate either, not both.

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