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Restoration of a 150 year old Barn.
clockmanFRA:
Hi Bruce,
The concrete slab we just laid is generally called a Mass Slab Foundation, as its a raft foundation for the new building that I will put up inside the Old building. The new walls etc will have no direct connection with the old fabric and the cavity between the 2 walls, 200mm will be fiberglass type insulation from old glass.
The new walls are lightweight 200mm thick thermal blocks at 490ks per linear meter loading on to the raft foundation.
There will be a concrete screed, under floor heating running from the 5kW PV on the roof, and then tiles put on top of what you can see at present.
Thermal expansion joints in concrete that are used normally where the concrete is subject to weather, on off pressure, movement and heat.
Normally my Raft foundations are in the ground and subject to other coverings, so the environment is very stable.
What I do not want to happen is that the Building foundations breaks it back, and putting a deliberate thermal joint on this particular small Raft foundation should not be necessary and unwarranted.
Like all things there is a lot to consider here, ground and sub soil loadings, size, positioning the re-enforcing steel, eventual loadings, concrete type, and very important for me....... is minimum use of concrete and materials.
Here's a couple of Photos of another Extension and Raft Foundation I designed and built here. Traditional local hand made brick, and yes, I laid each brick at a rate of 300 a day, laid to line and profiles, (my bricklayer friend gave me grief on a few things, but helped with sage advice). The fancy brickwork matches the old buildings brickwork.
It took me 3 years, on and off.
MaryB, have fun.
dnix71:
Minimum use of wood makes for less work in the long run, it looks like. Bricks and concrete don't rot. I'm guessing those brick walls are designed to support themselves only. The roof must be supported by pillars and beams.
In the US most structures are tied together so the outside walls carry some of the roof load. That means hollow brick with rebar and concrete. Foundation is everything. Here we would have torn it to the ground, built a new foundation and then used the old bricks and whatever else could be salvaged to rebuild a historical structure. Sometimes building of historical value get dismantled to numbered pieces and relocated for reassembly.
It also looks like you don't get earthquakes in France very often. There must be an interlocking brick design for places that shake that does not require rebar.
clockmanFRA:
The falling down wall, is now all re-built and a new lump of Oak bolted into place.
The Barn gets its scaffolding, English stuff, (I have my own) and its free standing so no stress on the original fabric, but I must be getting old? as I ache all over putting that stuff up............ :-[ .
Help is handy?...............
Now to get on with the New roof.........
oztules:
I'm feeling aches and pains just looking at the scaffolding......
................oztules
clockmanFRA:
Scaffolding is ridged, no swaying..
Roof stripped of the old slate tiles.
Wood repairs, with a couple of up joists/beams supported with new ones along side, and sorting out that collapsed end with new close boarding. I also fit metal angle brackets to lock the up joists to the wall plate, as some have their rusty nails corroded away, or the wood pins have rotted out.
New gutter clips where the up joists are. I normally fix them with a slight slop so the water drains nicely. Here the building itself drops 4 inches at the far end........ so no deliberate slope required.
I use a breathable membrane felt, then up lats fixed to the up joist underneath, these will take the cross tile lats.
Yikes, ! I got through 1,400 off, 5mm x 45mm, long screws in 2 days,....... its nice to have good battery/electric screw drivers. :)
It rained, and I got wet twice today, yuk.
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