Dyna Bolts Vs Screw Bolt

[Fr_303]

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?

[journeyman Mick]

..............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

[HappyHammer]

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.

[Fr_303]

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?

[HappyHammer]

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.

[Ivan in Oz]

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!

[Fr_303]

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.

[DvdHntr]

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.

[Fr_303]

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?

[rod1949]

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.

[Fr_303]

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.

[rod1949]

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.

[Fr_303]

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?

[rod1949]

I don't know i'm really confused does anyone else recommend these?

Well just buy one and try.

[journeyman Mick]

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