MikeSharp01

If, as I suspect, these are going to be mainly in shear, IE holding the plate on the wall, then a few M10 screws, provided they don't split the blocks, will have significant supporting capability. Typically in the order of 10Kn (appox 1000Kg) each.

My Experience with these screws is that the pilot hole is critical, don't use a worn out SDS drill, get a new one as factions of a mm make one hell of a difference to the torque you need to apply. Also once you start driving it in keep going until its fully in, stopping is also a problem I found, I did the last bit using a spanner rather than the impact driver. Good thing is they usually unscrew if required.

Very neat combi @Alphonsox and the speed is great, funny thing though - I have a group of 50 Chinese Engineering students who cannot recognise the Chairman or Chief executive of Huawei from their pictures but can instantly recognise Steve Jobs from his - and he is dead while the other two are still alive (I believe).

Ok, quick trial with a wooden former and I can get the pipe in with a 90 deg bend, so I will build formers into the wall and run it as one continuous length of HEP 2 pipe. PS Other air handling companies are available - but perhaps they don't give out free scale rules at exhibitions.

HEP do supply a former, it can deliver 120mm radius, I wonder if I can squeeze it down a bit more, will give it a try later. Yes but will they pay the bill for the damage or the water used I suspect not. One of my former colleagues had a push joint fail and it wrecked his whole house, he was out for 6 months while they fixed it. It was a new build and the builders blamed their plumbing contractor but in the end his house insurance picked up the whole tab and are, as far as I am aware, 4 years later, still chasing the builder. Yes that is the way I wanted to go but its a pain to get in, and I will need soldered joints somewhere. If I can get a 90 deg bend into 80mm I will go with HEP I think otherwise - given my colleagues experience I will find a way to get the copper in there. Thanks all for you support...

What will he say I wonder - he is something of an evangelist for HEP as I recall it.

Great idea - I have not tried bending this pipe tight, I will look it up, but I guess I could and I have got about 80mm depth to turn 90 deg.

Makes sense will have to find a virtual 'attic' as we don't / won't have one here.

I have to run some pipework inside the wall around one of our showers. I had decided on plastic (HEP / JG or some such) but I have to turn it 90 deg inside the wall and then another 90 deg to bring it out of the wall. I can get it 50mm deep and protect it behind a metal duct cover along the run and the wall will be tiled anyway. My concern is the two 90 deg bends and their reliability over the N years the house will be up. I wonder if I might be more sensible to run this in copper or use compression fittings on the plastic pipe for the 90 deg bends. (I will pressure test it once it is in and before the wall coverings go on naturally.) I have a load of JG push fit fittings that have held sound for 10+ years now back at millstone manor although I can get at all of them if needs be. Any thoughts?

Welcome to THE forum - looks like a great project.

I tend to agree that it might well be just a classical control theory problem if it were not for the fact that this deep learning stuff is disrupting classical theories across the piece. Although a vast training set it required in supervised networks for improved accuracy one might envisage a situation where an unsupervised network might learn from a number of houses which while being very different do have similar reactions to similar stimuli. Good to chew it over though.

Are not all icings carbs - well C6H12O6 like anyway, feel like a right onoff I do.

Welcome to THE forum for self builder. Seems like a very tight budget but might be doable. Perhaps the optimum route would be to find a derelict existing dwelling with a good foundation so you can build on that and get the VAT back, there are some rules on how much you can retain, although you will pay more for the plot all the services will be there and planning should be straight forward. The trick is going to be to draw a polygon around Dunstable with the periphery lying on a 1 hour travel (fast car / slow car / bike / train etc). That's quite a long way up the M1 (don't go south as prices get silly) but not as far across country. Then look for the cheapest areas and try and find a derelict building - auctions are good.

Welcome to THE forum for self builders.

The assumptions here need unpacking a bit perhaps. When talking about BSP we usually assume parallel threads because the technical extra P (BSPP) is assumed while NPT does what it says on the tin (National Pipe Taper) has a tapered thread. To get a correct 'mating' you would need to use another NPT fitting. Tapered threads are designed, among other things, to seal themselves as they tighten with minimal packing while parallel threads usually need some additional sealing such an olive, a sealing face or washer. If you try and get an NPT (male) to mate with a normal BSP thread (female) it only meets at one place so is very challenging to seal and can split the female fitting. There is a NPS (straight) form as well but you don't see that about much. All the details can be found here: https://www.valvesonline.com.au/references/threads/ from Oz but as it is talking about the standards of two other countries I think it can be relied upon.

The more I read through this thread the more I wonder if a deep learning classifier might be able to work this all out - eventually. We still seem to be applying classical scientific theory to it while other methods might work a little better in the massed data era. Have a look here for a broader view of these ideas. My musings are that in a well insulated house all the time series thermal events will have data characteristics that might be classified, mostly just slopes of temperature but when tied in to other events around the systems such as power consumption in / gas flow to the kitchen (With rates of consumption here it would be possible to get ahead of the cooling / heating systems) perhaps, the burglar alarm being disarmed = people coming in, it should be possible to classify the events and then propose control schemes that can cope - although naturally deep learning can do little but work with the laws of physics. Anyway just some musings.

Control theory 101 great explanation. Need to mull it over I do.

Welcome to THE forum.

Yes as @PeterW suggests just do another wall plate along the end wall, it will fit in the gap and get right into the corner, simple.

Sorry Ian but still wondering how the roof (if it is a roof) is supported at its edge. The wall plate usually has the joists mounted on it but the surface that is placed on the joists still need a small amount of support at their outer edge alongside the wall.

This is what we have done - so it is scaremongering. The BCO has no problem with me building it neither does the structural warranty company.

Welcome Ian - there are a few of us in the Kent chapter of BH.

Sorry, but how is the edge of the floor secured to the blank wall on the right, should there not be some edge support running along it, is that what the gap is for?

I started this thread as serious look at a new piece of research which might or might not have value for us in the long term, now it has turned into a pig's ear! So rather than have everybody posting mushroom / fungi names here I have found a reference to all, well many, of them: https://www.mssf.org/cookbook/names.html so now we can all play games seeing if we can get a mushroom name into our posts, not just on this thread but everywhere - mischievous or what!

We used Advanced foundation Technologies system for our passive slab which I was very pleased with but there are loads of passive slab companies out there.