Fixing for oak canopy

[cornishjoinery]

Hi guys,

Building an oak canopy for a client. The side braces are 120 x 150 oak stock and are going to be freaking heavy once the cross braces have been put on plus slates etc. Being put onto a new new stone wall 100mm thick. Anyone recommend some serious fixings i can use, brand, type etc. always used concrete screws/spax anchor screws but need something beefy. Many thanks

 

[PAC1]

Traditionally they sit on a cantalevered stone that projects out of the wall. I would get some stainless steel rod and drill a hole and fix it with epoxy capsules into the wall and then attach the oak with a nut and washer

 

[Hitch]

Sounds like a chemical anchor job for sure.
The
As above, stainless studding.

Basically, you drill the hole out bigger than the stud, (12mm for M10....14mm for M12....)
Brush or blow out the dust.
Inject the resin
Insert the stud with a bit of in/out/twisting motion....
Tighten down the nut.


Theres a bit of a 'How-to' I wrote a few years ago for the Ultimate Handyman forum...
Hopefully its okay to post the link...
http://www.ultimatehandyman.co.uk/how-t ... in-fixings


If you go down that route, just try and avoid drilling right through into the cavity, or you'll need sleeves or lots of resin.
Other thing to watch, some tubes require a special gun, some fit in a standard skeleton gun.

 

[Phil Pascoe]

And don't be tempted to use galvanised washers with stainless nuts.

 

[deema]

Not all stainless steel is resistant to the acids in Oak. Since the oak will be in compression I would oversize the holes and use some cheap rigid plastic tubing to isolate the bolts from the oak. The tubing needs to be shorter than the thickness if the oak, rigid and if possible allowing a small air gap all around the bolts. Conduit is brilliant for this and cheap. A small drip hole is also advisable to allow any water / moisture to escape