UKC

mount a pull up bar (or climbing wall frame) on breezeblocks?

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 elliot.baker 06 Sep 2017
My house is about 12 years old and the internal garage walls are made of breeze blocks, but two different types - one side of the garage the blocks looks like solid concrete with a wavy pattern on them, the other side looks kind of blobby/bubbly/like the inside of an aero chocolate bar, like blown concrete or something < that is the side I would ideally like the pull up bar on!

The bar has 4 brackets that take 2 big screws each so the load would be fairly spread out - do you think the breeze blocks are structurally sound enough for this? I've read about not using a hammer drill.

Longer term I'd love to try building a basic, small ish slighly overhung home climbing wall on this wall so wondered if it would be ok to mount the backing beams/frame on to breeze blocks also!

Many thanks for any advice. There should be a DIY subforum on this site...!
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 Toerag 06 Sep 2017
In reply to elliot.baker:
Mount your item to a wooden/metal plate, then mount the plate to the wall if the item has a small fixing area. I think your bar has enough size and fixing opportunities to spread the load, but you need to use special fixings rather than screws - although your static weight isn't excessive, your dynamic load can exceed 2.5kn (eg. bounce testing can break small RPs) Aerated thermal blocks require special fixings - googling 'heavy duty fixings for aerated blocks' yields some useful results.
This is useful:-
http://www.fischer.co.uk/PortalData/10/Resources/support/sales-documents/do...
The resin mortar option is the one you need. Better to be overkill than blow out a block (or more).
Can you put threaded rods right through the wall with a backing plate on the far side??
Post edited at 12:16
 AP Melbourne 07 Sep 2017
In reply to Toerag:
> Can you put threaded rods right through the wall with a backing plate on the far side??

Beat me to it Toerag.
Definitely; If access is available to the outside face of the block wall go right through and use vertical spreaders [toes-out channel or box section] to pick up a number of courses.

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