saveasteading

The manifold circuit is a smaller diameter, and I'm presuming this indicates a smaller volume of circulation. I'm so glad now that we fitted insulation to the feed side of this circuit. Most of it is now boxed in the wall, in the service void. Question for the plumber may be whether the feeder and manifold pumps are linked and both turn off when there is no demand.

In full please?

It shouldn't cost any more than hiring the necessary kit.

Your explanation should be line one of the fire section of the reg's. Maybe people who try to cheat the rules, and principles, will understand this.

It must have something from the ground up to the timber level. If not shown on the planning drawing then that is a technical oversight. The planners will accept a clarification. Bricks are relatively expensive but are replacing something else....blocks or concrete usually.

Fully ufh. There are 2 manifolds and this one is a long way from the heat pump and plant room. That would explain why this one has the 'short circuit' or figure of 8 principle and the other doesn't need it.

Got an answer from m y son-in law. Props. Selling these £500. the 16ft Plasterboard lifter selling for £250 NB this is much higher than the average lift requirement. Could potentially deliver them to someone not far from the M74/m6/m5 when we go down south with hired lorry this week.

Gotcher. So the primary loop gets the hot water to the location, in a comfortably sized pipe with its own pump. Then the manifold and ufh pipes, with lots of resistance, draws the hot water from the loop with its own pump. Presumably both circuits turn off when there is no demand from any ufh loop. It's the first time I have poked at this in action. It surprised me how little difference there is in temperature between the feed and return pipes from each slab loop. But it makes every sense on reflection. There was even less difference in the feed loop but that is now explained too. The plasterboard jointers love the unusual luxury of a warm building and very warm floor.

I can give the evidence. I've seen it plenty of times. In an active system the next flush will probably move it all along though. But I think it is a real thing. I'd have to look at the reg's to see if it has been quietly dropped or simply isn't covered any longer.

This is all working fine, ticking over with 20° feed to make it a pleasant building site. I'm just wondering what the cross pipe at the top is for, short circuiting the system. As it appears, the pump would circulate the water round and round the manifold, with no feed of heating water. So I'm guessing another pump somewhere forces the heating supply. But what is the function of that link?

Bear in mind maintenance. Plants grow and die so may need maintenance and you need safe access. The membrane has to be roof resistant. Some of these are not uv resistant so perhaps a joint is required. Consider laying a grid to contain the plants. This is all very heavy (wet earth) and the roof needs to be designed for it.

Because its strong and cheaper. But you can specify for smaller stones.

Porous with the pores filled with oil?

Not personally but designed and had it built where the original architect had included it., missing out the package deal people and saving a lot. So yes, you can buy the bits and do it.. Is this a requirement or your own choice?

My instinct is for beam and block as the slope can stay put. The void may be usable as a small store, accessed from outside. Or as a big store for long thin things.

I don't understand that bit. There already are some super slippy wc pans, at a cost. But this is just to make the brush redundant, not aid drainage.

Friction and turbulence. The extreme would be a non moulded corner, and this is in-between. The same is happening in pressure pipes where sharp turns should be minimised. That's correct. And using too big a pipe can do the same. The range of gradients in the building regulations is slightly conservative but I stick to them to allow for real life level control.

Tempting, fun and macho to diy this. But a jcb with experienced driver can do it much faster and better. IF you are organised and in total control of line and level. Then he takes the machine away, leaving you space. But if you aren't organised, then your diy digger sitting idle isn't costing you as much as the other.

I'm at the steading and the floor I'd clear so i have looked closely at the finish. There are ripples which won't affect tiling but will need to be rubbed off with a stone where vinyl is going It is utterly flat. The official test is a 3m straightedge, which you lay every direction and also press down one end at a time. There is nothing noticeable at all. It's flat. It has done that by gravity so must be level too.

Yes I've been low on expressing symparhy perhaps. I'm not an amateur yet stuff went wrong with our house refurb. I had the day job, building other peoples buildings and left the work to a very experienced and trusted foreman. Costs rose a lot, several things had to be redone. Gradually some poor work emerges. Things do go wrong, esp in remodelling or change of use.

It is a snaking channel. Look at the building regulations for drainage. Enjoy!

You would hope so. But common sense and fairness isn't the basis of our legal system. A judge would want it all pre-argued by construction specialists. Then they would expect arbitration rather than court. Yes, it would count that the builder wrote the contract rather than use a standard one..but it is still the agreed contarct.

That's exactly right. Water and contents going round a 90° bend encounters turbulence. That slows flow, especially of solids. Esp to be avoided for gentler slopes. Free water is also likely to run past the solids. Think bobsleigh going round a sharp bend. If it slings up high it is taking a longer route and slowing.

Generally there is a drop in level from the secondary inlets down to the main channel. The through channel works better and you don't lose height along the main run, and sometimes that matters, to maintain gradient. As a minor advantage, 2 x 45° allows a little more adjustment than 1 x 90°.

I agree. But he doesn't actually say this is to benefit the client.... I discovered a long time ago not to use friends in construction....there's always something where there will be disagreement.