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  1. #1
    Join Date
    Nov 2007
    Location
    Melbourne
    Posts
    48

    Default Dyna Bolts Vs Screw Bolt

    I need to secure a Pine Brearer to a brick wall.

    Its a 3600mm long 140mm x 45mm Pine Beam to a wire cut brick wall, what do you guys recommend I use Dyna bolts or Screw Bolts the bricks have 6 holes in them and I've had trouble with dyna bolts before.

    Can i use the dyna bolts in the motar?
    Also what size bolts and how many should i use for that length?
    Whats the Best?

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  3. #2
    Join Date
    May 2003
    Location
    Kuranda, paradise, North Qld
    Age
    62
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    5,639

    Default

    Quote Originally Posted by Fr_303 View Post
    ..............Whats the Best?
    Some type of chemical anchor would be the "best" as these don't physically stress the brickwork like a mechanical anchor of any type will. With bricks with voids in them though, the usual glass capsule chemset won't work real well as you'll just lose all the chemical adhesive down a void if you hit one. There's chemical adhesive system that come in a cartridge, a few different proprietry systems as well as a couple that fit in a normal caulking gun. One of these coupled with a special hollow mesh sleeve would be the best for your application. The hollow mesh sleeve is pushed into the hole and you pump the adhesive in. The adhesive will coat the sleeve where it runs through any voids, bridging the gap and tieing it all together. Check out Ramset and Hilti.

    Mick
    "If you need a machine today and don't buy it,

    tomorrow you will have paid for it and not have it."

    - Henry Ford 1938

  4. #3
    Join Date
    Jun 2004
    Location
    Port Macquarie
    Age
    54
    Posts
    2,123

    Default

    Quote Originally Posted by Fr_303 View Post
    Can i use the dyna bolts in the motar?
    Don't think so Tim.

    If I was doing this without Micks knopwledge of much better options I'd use Dynabolts.

    What will you be using the bearer for? An external deck?


    HH.
    Always look on the bright side...

  5. #4
    Join Date
    Nov 2007
    Location
    Melbourne
    Posts
    48

    Default

    Quote Originally Posted by HappyHammer View Post
    Don't think so Tim.

    If I was doing this without Micks knopwledge of much better options I'd use Dynabolts.

    What will you be using the bearer for? An external deck?


    HH.
    Yep It's for an external deck,
    I've never used a chemical anchor before I don't know much about them.

    If I use dyna bolts and the hold tight they should be ok shouldn't they?

  6. #5
    Join Date
    Jun 2004
    Location
    Port Macquarie
    Age
    54
    Posts
    2,123

    Default

    I couldn't give you a definitive on that, as I'm no expert and I don't know the dynamics of your job. What size dynablots are you considering? How big is the deck, what other support will the joists have etc. etc.

    Can you get to the space behind the brick? ie the crawlspace under the house? If so maybe a proper nut and bolt might be an option. Although this doesn't solve the stress of a mechanical anchor on the brickwork.

    HH.
    Always look on the bright side...

  7. #6
    Join Date
    Jul 2003
    Location
    On the Downs, Darling SEQld
    Posts
    1,167

    Thumbs up Chemical

    Quote Originally Posted by journeyman Mick View Post
    Some type of chemical anchor would be the "best" as these don't physically stress the brickwork
    Mick
    Go the caulking Gun type;
    incase you do hit a Void.

    Mechanical in Mortar
    Ask the Ramset shop owner what he uses, I did...... CHEMICAL Ramset 801!
    Navvi

  8. #7
    Join Date
    Nov 2007
    Location
    Melbourne
    Posts
    48

    Default

    Quote Originally Posted by HappyHammer View Post
    I couldn't give you a definitive on that, as I'm no expert and I don't know the dynamics of your job. What size dynablots are you considering? How big is the deck, what other support will the joists have etc. etc.

    Can you get to the space behind the brick? ie the crawlspace under the house? If so maybe a proper nut and bolt might be an option. Although this doesn't solve the stress of a mechanical anchor on the brickwork.

    HH.
    I was considering 12 x 100 dyna bolts,
    The deck is 3900 x 3600 the joists are also on 90mm stirups 900 apart.

    I cant get to the back of the brick.

  9. #8
    Join Date
    Oct 2007
    Location
    Seven Hills, NSW
    Posts
    205

    Default

    There are specific types of anchors for brickwork. Mechanical anchors are not an option. Contact Hilti and ask them, they will put you onto the correct anchor for the job.

  10. #9
    Join Date
    Nov 2007
    Location
    Melbourne
    Posts
    48

    Default

    Quote Originally Posted by DvdHntr View Post
    There are specific types of anchors for brickwork. Mechanical anchors are not an option. Contact Hilti and ask them, they will put you onto the correct anchor for the job.
    I'm really new at this but I haven't come across Hilti in melbourne, is there somewere I can go that will help me?

  11. #10
    Join Date
    Aug 2004
    Location
    Perth WA
    Posts
    2,035

    Default

    I've used these and they are absoluty mickey mouse.
    http://www.ramset.com.au/public/Arti...lID=3&menuNo=0

    For your application in terms of a shear force they would be ideal.

  12. #11
    Join Date
    Nov 2007
    Location
    Melbourne
    Posts
    48

    Default

    Quote Originally Posted by rod1949 View Post
    I've used these and they are absoluty mickey mouse.
    http://www.ramset.com.au/public/Arti...lID=3&menuNo=0

    For your application in terms of a shear force they would be ideal.
    Thats what I ment by Screw bolt, I've used them before but only for a light clotheline so I don't if they will be ok.

  13. #12
    Join Date
    Aug 2004
    Location
    Perth WA
    Posts
    2,035

    Default

    Quote Originally Posted by Fr_303 View Post
    Thats what I ment by Screw bolt, I've used them before but only for a light clotheline so I don't if they will be ok.
    Well have a look at Ramset's web site, they have a range of sizes from biggins to smallins. There will be a size to suit your requirement.

    I used them (75mm x 12mm) to hold down the steel famed walls of my house. The engineered drawings stated to use 50mm x 10mm dynabolts to which I thought was pathetic along with the high possibilty of breakout when tightining up the dyna bolts as the external frames sat right on the edge of the concrete slab. I sussed the Anka screws out, and ran it past the engineer (he was unaware of them) and confirmed their suitability. I found I was able to tighten then up to incredible presures with absoluty no breakout.

  14. #13
    Join Date
    Nov 2007
    Location
    Melbourne
    Posts
    48

    Default

    Quote Originally Posted by rod1949 View Post
    Well have a look at Ramset's web site, they have a range of sizes from biggins to smallins. There will be a size to suit your requirement.

    I used them (75mm x 12mm) to hold down the steel famed walls of my house. The engineered drawings stated to use 50mm x 10mm dynabolts to which I thought was pathetic along with the high possibilty of breakout when tightining up the dyna bolts as the external frames sat right on the edge of the concrete slab. I sussed the Anka screws out, and ran it past the engineer (he was unaware of them) and confirmed their suitability. I found I was able to tighten then up to incredible presures with absoluty no breakout.
    I don't know i'm really confused does anyone else recommend these?

  15. #14
    Join Date
    Aug 2004
    Location
    Perth WA
    Posts
    2,035

    Default

    Quote Originally Posted by Fr_303 View Post
    I don't know i'm really confused does anyone else recommend these?
    Well just buy one and try.

  16. #15
    Join Date
    May 2003
    Location
    Kuranda, paradise, North Qld
    Age
    62
    Posts
    5,639

    Default

    Please don't use a screw bolt or any other mechanical fastener on your brickwork, there's a very real possibility that your bricks will disintegrate. Talk to a Hilti or Ramset rep. Google is your friend.

    Hilti Centre 4 Lonsdale Street
    Dandenong VIC- 3175

    Phone: 131 292
    Fax: 1300 135 042

    Opening hours
    Monday - Friday
    7.30 am - 4.30 pm

    Telephone hours
    Monday - Friday
    7.30 am - 5.00 pm (AEST)

    Hilti Centre 203-205 Normanby Rd
    South Melbourne VIC- 3205

    Phone: 131 292
    Fax: 1300 135 042

    Opening hours
    Monday - Friday
    7.30 am - 5.00 pm

    Telephone hours
    Monday - Friday
    7.30 am - 5.00 pm (AEST)


    There"s a Ramset™ sales office at the following locations:

    For assistance with fastener selection and application, technical support and sales within Australia, contact your nearest Ramset™ representative on 1300 780 063.

    All states (excl. W.A.) 7.30am - 5.30pm Monday to Friday
    Western Australia 7.30am - 5.00pm Monday to Friday
    Counter Sales 7.30am - 4.30pm Monday to Friday

    Mooroolbark
    296-298 Maroondah Highway
    VIC 3138

    Call 1300 780 063
    Richmond
    96 Church Street
    VIC 3121

    Call 1300 780 063


    Mick
    "If you need a machine today and don't buy it,

    tomorrow you will have paid for it and not have it."

    - Henry Ford 1938

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