Concrete fixings,rawl loose bolts or thunderbolts? - Timber frame garage construction

[jotto]

Apologies if this is not in the correct section...

Am about to construct a wooden garage on my newly laid concrete base.

It will be a timer frame affair and I was wondering what the best way to secure the frame to the base was. I went in to my local fixing suppliers with the intention of purchasing some Rawl bolt type fixings, loose bolt,to secure the 3"x2" frame sections to the splat. The guy then asked me If I had used Thunderbolt self tapping fixings for use in concrete....he was singing their praises but Im not sure.

Any one got any ideas on this? Should I stick to the Rawl bolt idea or go with the cheaper "Thunderbolts"? Im having trouble finding any technical data on the thunders to see how well they match up.

TIA.

[Mikey_C]

without wanting to close the door after the horse and all. but I would have concreted in the thread rod when I did the pour. However, as we are now where we are, I would personally use chemical anchors.

[dig dug dan]

thunderbolts.

They are really easy to use and very strong

[Dave_L]

Yep, thunderbolts for the win!

[Dave_L]

For those who don't know what we're on about.....some thunderbolts, pictured earlier, lazing about....

[jotto]

Thanks all, looks like TB's are the way to go...cheaper as well, result!

I did think about having some anchors put in place when I poured but as this was my first attempt and with just the wife helping....it was rather difficult! 7m3 of concrete in a splat 6.5m x 5.5m of varying depth :p

was looking at the M12 x 130mm Thunderbolts @58p + Vat, These should be plenty long enough for the 2" thickness?

[Mikey_C]

I'd go with the professional recommendations, Jotto, I over engineer everything! :p

[Pablo]

Thunderbolts but the concrete needs to be well cured or they can bust the thread when being tightened.

[TheVictorianCobbleCo]

I dont want to rain on your parade but I've used these things and if you dont drill the hole dead right or the concretes soft the thread strips (rather, they just turn and turn and turn), the margin of error allowed is small. I'd pay the xtra and go rawl bolt/stud. Another option is to epoxy in a threaded stud/rod cut to the length that suits you, works a treat and Ive done thousands this way. Good luck whatever.

[Dave_L]

Good point ref:fresh concrete. You're right, go for the rawls.