Page 2 of 2 FirstFirst 12
Results 11 to 15 of 15

Thread: CLAMP BACK/BACKSTRAP

  1. #11
    Join Date
    Jul 2003
    Location
    New Jersey
    Posts
    25,350
    Quote Originally Posted by LarryFine View Post
    Despite having heard that, I always put 1-holes on with the strap above the conduit, because that way the conduit hangs straight down from the screw. With the strap below the conduit, the pull is away from the wall, possibly pulling anchors out of the holes.
    I agree, not that it really matters much if properly fastened, but hanging from above is better than holding up from below for the reason that you've mentioned.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  2. #12
    Join Date
    Jan 2018
    Location
    SE Michigan
    Posts
    93
    Hanging or supporting. I use both, depending on conditions. But hanging so that the anchors don't fall out, on a cement wall, that's just wrong.

    I use Nail-ins exclusively, even overhead. Gave up plastic anchors and tapcons years ago, for this reason.

    MTW

  3. #13
    Join Date
    Dec 2007
    Location
    NE Nebraska
    Posts
    37,098
    Quote Originally Posted by MTW View Post
    Hanging or supporting. I use both, depending on conditions. But hanging so that the anchors don't fall out, on a cement wall, that's just wrong.

    I use Nail-ins exclusively, even overhead. Gave up plastic anchors and tapcons years ago, for this reason.

    MTW
    Powder actuated nail-in's?

    My luck with drive in type would be missing the nail and flattening a piece of EMT
    I live for today, I'm just a day behind.

  4. #14
    Join Date
    Jan 2018
    Location
    SE Michigan
    Posts
    93
    I have a nice HILTI powder actuated gun but don't use it that much anymore either. It works great on some green concrete, 50-60 year old stuff, not so much. Leaves a nice big splatter hole many times.

    Nail-ons are quite strong, come in many sizes, and can even be reused when necessary. I have a custom setting tool I use, that can reach inside the back of deep enclosures. Has one end to fully seat the strap, strut or enclosure against the wall, and the other end to set the pin 3/16" from fully home. That allows you to withdraw the pin and anchor, for relocation if necessary.

    4 of these pins holding a control panel on the wall will easily support my weight climbing on it. There are many brands, but their not all created equal.

    These are the ones I like.
    https://www.strongtie.com/mechanical.../p/zinc-nailon

    MTW

  5. #15
    Join Date
    Dec 2007
    Location
    NE Nebraska
    Posts
    37,098
    Quote Originally Posted by MTW View Post
    I have a nice HILTI powder actuated gun but don't use it that much anymore either. It works great on some green concrete, 50-60 year old stuff, not so much. Leaves a nice big splatter hole many times.

    Nail-ons are quite strong, come in many sizes, and can even be reused when necessary. I have a custom setting tool I use, that can reach inside the back of deep enclosures. Has one end to fully seat the strap, strut or enclosure against the wall, and the other end to set the pin 3/16" from fully home. That allows you to withdraw the pin and anchor, for relocation if necessary.

    4 of these pins holding a control panel on the wall will easily support my weight climbing on it. There are many brands, but their not all created equal.

    These are the ones I like.
    https://www.strongtie.com/mechanical.../p/zinc-nailon

    MTW
    That is still a type of wedge anchor, when you said nail-in I envisioned driving a nail directly into the concrete in some fashion.

    Not saying that type won't ordinarily hold more then a plastic wedge anchor. Is somewhat non removable and one might need to consider that in some applications.
    I live for today, I'm just a day behind.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •