Fixing bolts for 7.3n aircrete blocks

[LSB]

We are looking at fitting the following roof.

 

 

 

 

The wall where the rafter fits is the internal wall below the rafter and for 2 blocks above it will be the external wall.

 

This wall is built using

 

H&H celcon high strength 7.3n aerated concrete block 440*102*100mm

 

My question is, what sort of bolt should we use to fix the wall plate to this wall.

 

The wall plate is 47 * 147 and the rafters are at 400 centres.

 

The walls have been constructed, but we are wondering about them being aerated as the the decription.

 

TIA

Jill

 

 

 

Edited August 31 by LSB

[JohnMo]

First question is what did the structural engineer specify? That should be your first port of call. If you haven't had any structural engineer involved you should.

 

Would have thought they would be on hangers built into the wall.

 

Handbook here

https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.pasquill.co.uk/wp-content/uploads/2019/01/posi-joist-technical-handbook-2019.pdf&ved=2ahUKEwjQhdOhup-IAxW0WEEAHa8QNB8QFnoECB4QAQ&usg=AOvVaw30F2fl_4HxO29xMSPYJ6bu

 

But having said the above - these are good.

https://www.screwfix.com/p/dewalt-aerated-concrete-anchor-nylon-60mm-50-pack/454HT?tc=TA5&ds_rl=1247848&ds_rl=1241687&ds_rl=1245250&gad_source=1&ds_rl=1245250&ds_rl=1247848&gclid=Cj0KCQjw_sq2BhCUARIsAIVqmQvplppZTIs9pnhfHl1drL8qml8jhlOHJ2sxVX3WU1QsF5v912lcgHkaAtUGEALw_wcB&gclsrc=aw.ds

 

You install them one turn in half a turn out until they are driven home.

 

Or the other option is a chemical anchor, such as this

https://www.screwfix.com/p/rawlplug-r-kem-ii-styrene-free-polyester-resin-300ml/32863

Edited August 31 by JohnMo

[LSB]

32 minutes ago, JohnMo said:

First question is what did the structural engineer specify? That should be your first port of call. If you haven't had any structural engineer involved you should.

 

Would have thought they would be on hangers built into the wall.

 

Handbook here

https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.pasquill.co.uk/wp-content/uploads/2019/01/posi-joist-technical-handbook-2019.pdf&ved=2ahUKEwjQhdOhup-IAxW0WEEAHa8QNB8QFnoECB4QAQ&usg=AOvVaw30F2fl_4HxO29xMSPYJ6bu

 

But having said the above - these are good.

https://www.screwfix.com/p/dewalt-aerated-concrete-anchor-nylon-60mm-50-pack/454HT?tc=TA5&ds_rl=1247848&ds_rl=1241687&ds_rl=1245250&gad_source=1&ds_rl=1245250&ds_rl=1247848&gclid=Cj0KCQjw_sq2BhCUARIsAIVqmQvplppZTIs9pnhfHl1drL8qml8jhlOHJ2sxVX3WU1QsF5v912lcgHkaAtUGEALw_wcB&gclsrc=aw.ds

 

You install them one turn in half a turn out until they are driven home.

 

Or the other option is a chemical anchor, such as this

https://www.screwfix.com/p/rawlplug-r-kem-ii-styrene-free-polyester-resin-300ml/32863

Thanks, the SE approved the rafter drawings, and the walls, but didn't actually specify the hangers 🙂

He is currently on holibobs for the next 2 weerks (I know because I'm waiting on him for some changes to the floor structure for phase 2) so no chance of involving him and we don't really want to wait for him to return to 1000 emails.

 

I'll look at the links you sent