Wall construction ideas

[Reetster]

All ideas welcome

I am progressing a barn conversion with the wall structure as follows.

 

Timber framed house built on 300mm reinforced slab (450mm toe) within the footprint of a 28m x 9m existing timber barn,

Posts of existing barn sits on existing separate pad foundation, so in effect we are building a house within the barn.

Wall construction to be (from inside out) Plasterboard, 150mm insulated frame, 12mm ply, felt, secondary skin in between posts of barn - 100mm frame sitting on a brick plinth, which will have more insulation, ply, felt then batten ready for cladding.

The problem we are having is what to sit the brick plinth on. To put in a small strip foundation we will need to underpin the existing barn pads, which are very deep. There has also been talk of using brick slips mounted to the existing new build frame, but Im now overly excited by this.

Is there a way we can drill into the new reinforced slab, in between each bay (about 4.3m) to support some sort of steel or lintel on which we can build our plinth, and then 2^nd skin wall above?

Understandably, building regs don’t want to put any additional weight onto the existing original timber posts

 

Any ideas welcome

[Mr Punter]

Firstly, a drawing would be useful.

 

I have had a reinforced slab with a stainless steel angle cast into the edge to build brickwork off.  Would that work for you?

 

It was done by Abbey Pynford.  I am not sure if they would supply the brick support separately.

 

[Reetster]

Thanks

Don't have a drawing, but will get a sketch down. 

Slab is already cast so to use a system such as this we would need to drill into it. An  piece of angle steel would work in theory though.

Cheers

 

[Mr Punter]

There are a few masonry support system suppliers out there like https://acsstainless.co.uk/product/type-1-fixed-back-to-concrete/

 

I think they are expensive though!

[Reetster]

Thats what I need, thank you

Now to investigate costs

 

Thanks again

[Zak S]

On 23/09/2020 at 15:16, Mr Punter said:

Firstly, a drawing would be useful.

 

I have had a reinforced slab with a stainless steel angle cast into the edge to build brickwork off.  Would that work for you?

 

It was done by Abbey Pynford.  I am not sure if they would supply the brick support separately.

 

Hi @Mr Punter sorry to high Jack someone's thread. I have my own post but was not sure how to ask you on that so asking you here. I am at GI stage and Abbey Pynford will cost up the 10m piled treesafe slab with void foundation. Do you think that works out to be overall cheaper than traditional piled ring and beam finished with block and beam floor. The ground is soft clay with some silt sand, lots of trees and high water table. Any experience of abbey Pynford would be extremely welcome.

Edited December 15, 2021 by Zak S

[Dave Jones]

you could look at helicoil screw piles as a tree safe alternative.

[Zak S]

1 hour ago, Dave Jones said:

you could look at helicoil screw piles as a tree safe alternative.

Thanks for the idea. I have contacted screw pile specialist and get a cost. Is it more cost effective than traditional concrete piles? For the traditional piles neighbours had to go down to 10m and they finished with ring and beam.

[scottishjohn]

On 23/09/2020 at 14:34, Reetster said:

To put in a small strip foundation we will need to underpin the existing barn pads, which are very deep. There has also been talk of using brick slips mounted to the existing new build frame, but Im now overly excited by this.

If main load is being taken on the existing pads  why would you need to under pin for fill in walls --just dig a deep found between them  if you like  and pin the pads  if you are worried ,then it al moves in one piece -if it does move 

do each strip section  in isolation so you do not disturb the pads ?

how deep are the pad founds?

 

Edited December 16, 2021 by scottishjohn

[Mr Punter]

17 hours ago, Zak S said:

Hi @Mr Punter sorry to high Jack someone's thread. I have my own post but was not sure how to ask you on that so asking you here. I am at GI stage and Abbey Pynford will cost up the 10m piled treesafe slab with void foundation. Do you think that works out to be overall cheaper than traditional piled ring and beam finished with block and beam floor. The ground is soft clay with some silt sand, lots of trees and high water table. Any experience of abbey Pynford would be extremely welcome.

 

I have used them a few times.  You really just need to shop around and compare prices.  They did a slab supported on driven steel piles, one on hollow stem drilled piles and one with open augered.  Roger Boulivant are also a good firm,

[Zak S]

1 hour ago, Mr Punter said:

 

I have used them a few times.  You really just need to shop around and compare prices.  They did a slab supported on driven steel piles, one on hollow stem drilled piles and one with open augered.  Roger Boulivant are also a good firm,

Thanks @Mr Punter. Do they work out o be more economical than traditional or screw piles. It will not be until new year I will be able to give them GI report and just wanted to see if they are economically better than traditional system.

[Mr Punter]

Just now, Zak S said:

Thanks @Mr Punter. Do they work out o be more economical than traditional or screw piles. It will not be until new year I will be able to give them GI report and just wanted to see if they are economically better than traditional system.

 

It depends so much on ground conditions, access, loadings, contamination etc.  Just get several prices and see what works out most economical.