PeterW

15m2 is pretty big - larger than the average kitchen these days ..! What are you planning to do in it ...??! You could always have a building that had a terrace / veranda which could be easily made as free standing in front so not part of the building yet still "part" of it if that makes sense ...? Other option is make it moveable and then you don't have the restriction on the building size - didn't George Clark do that with one of his..?

The only animals that like the enclosed areas under that sort of building are squirrels - if you use a 1" square mesh on all sides so the wind can blow under (but leaves etc can't) then it won't be warm enough for any of the burrowing creatures .... Alternative is an engineering brick plinth all round but sort of negates the passive slab idea.

That's a big shed ..!! 90m of 100mm is about 35 sheets so £350 from the merchants.

50mm from the island, use a swept tee at the point it runs into the slab and bring the other end of the tee up with a 45 degree bend and a screwed access plug on it. That way you can get a rod into it with care...!

Meter moves are a Transco only job - £6-700 from memory but check their website as it has a decent price estimator on it. Does the pipe come up the wall externally as an option is to use a partially buried box but they need a different type of meter so again I think you get charged by someone for it....

Balance all the basin and shower ones - much easier and makes monoblock taps blend better. TBH with your set up is it ever likely that someone will use the shower and the sink at the same time ..?? If not just use 10mm spurs off the balanced 15mm feeds.

Right so that's just made the last 24 boards a lot easier ...!! Thanks all..!

^^ wot I sed... although I have seen the PReD set to a low pressure just to stop the issues @Nickfromwales highlights ...

Yep thats the one @MikeSharp01..! Also set them so we can use one as an edge noggin on at least one room - issue is we have 2 load bearing block walls coming up through the floor so it's been a bit fun..! Didn't realise either that the posi-joists would be 95mm wide ..! Nice thing was that there is a "service run" right down the middle of the house ..!

I'm a fan of the rear lean to as it makes a usable space - you could use it here to provide an extension to the kitchen diner and also house the downstairs WC Done with a flat roof and a nice skylight it also stops the carbuncles of uPVC conservatories being added to houses that just don't need them ..!

Liking the diy roof ladder...! You should be really proud of the finish on that - looks brilliant ..!

It's mostly 600 but there are a couple of places towards the walls where it gets less - makes it easier to start a second run if the join is in the gap but not worrying as I've got lots of Egger as I think the joist manufacturer slightly over estimated ...!

Hot gets to taps quicker, cold feed to WC is slightly slower so less noise. 10mm is much easier to thread through to end points too - just have to watch out as I've never found a 10mm to 1/2" tap connector so you have to step back up to connect in 15mm I should do my research better ...!! Hand tightened 10mm Hep2O to 1/2" tap connector ... http://www.jtmplumbing.co.uk/pipe-fittings-c433/hep-o-fittings-c653/hep2o-wavin-hepworth-hep2o-polybutylene-hand-titan-tap-connector-pp21258

Sorry - have to be joined on a joist. The picture is odd as it shows a joist running parallel to the short end but then says something else

That looks great ..! Is that a membrane roof ..?

Shower feed in either 15 or 22mm, basin and WC fed in 10mm separately. There is some logic in feeding all the WCs and outside taps off the cold before it hits the PReV so that when you lose the cold pressure from a loo flush you lose both hot and cold pressure. I may put a separate feed in with a second PReV set at say 1.5bar to feed the WC and outside taps. Longer term that will be fed from rainwater all being well - means it's installed once as a separate circuit and no retrofit needed.

Ignore that - just found the answer (even though it's not clear on the Egger site ..!!! )

Quick question.... With a fully glued T&G board such as an Egger protect board, does the short joint always have to land on a joist ...?? Or if there is perpendicular noggin under the joint does that suffice ..?

Yes it applies to the whole of Great Britain ... Business is usually defined in UK legislation and in this instance it is no exception : “business” means a trade, business or other undertaking (whether for profit or not); So in this statutory instrument it would still indicate that a self builder is not liable as such and is still a domestic client by definition of the law. I don't think anyone is trying to avoid any applicable legal responsibility. There are still other pieces of legislation that continue to apply and can result in significant fines or prison sentences for breach. What is being said in this case is that by definition, a self builder does not capable of being classed as Principal Contractor under CDM2015. The only way this would be clarified is using a test prosecution in court by which the HSE would need to prove they were not a domestic client. Given the HSE workload and budget, and the relative impact of the judgement, it is highly unlikely to ever occur.

Yes I agree ... however if you read the legislation and follow the 'thread of regulations' 7.1(b) states that [the client duties] pass to the Principal Contractor assuming the client appoints one. In the event that the client doesn't appoint one, then 7.2(b) automatically assigns that role to the construction phase contractor. Likewise, the Principal Designer role goes to the pre-construction phase designer by default under 7.2(a) in the event of a non-assignment. So for a self builder to end up with principal designer they would have to design the building without external professional input. Principal contractor is a very grey area - 7.2(b) potentially could transfer the liability to a self builder but for this definition : “contractor” means any person (including a non-domestic client) who, in the course or furtherance of a business, carries out, manages or controls construction work; Now as self builders are not acting in the course or furtherance of a business, they therefore cannot be classed as contractors by law [in fact this could be deemed a very good defence in court] I will try and pick through this in order tomorrow to highlight the stages relating to how a self builder is affected by the legislation and where the liabilities are incurred.

Legally - and that is the legislation above - a domestic client cannot be PC, or PD unless they have designed from scratch their own house and done all of the design.

Hi - I suggest its left as is - the discussion is a very valid one and one that keeps coming round as there is as with every legislation, a whole lot of grey between the black and the white !! You posted it in good faith - that's all we can ask and thank you for the apology !

So that's negligence and standard cause for prosecution under HSAWA as the team were employees of the company - no get out on that one, its general HSAWA stuff. So that confirms they were prosecuted under WAHR and not under CDM 2015 so its not a CDM 2015 prosecution at all. The actual notation on the prosecution outcome from the HSE was this : Leyland SDM (LSDM) Limited has been fined after four workers fell more than three and a half metres whilst carrying a ventilation unit. Westminster Magistrates Court heard how LSDM had been in the process of redeveloping a warehouse in Wembley. However, when four workers tried to move a ventilation unit into position, the working platform became overloaded and gave way. Neither the work at height nor the lifting operations were planned properly. Two of the four injured men suffered leg fractures, while a broken collar bone were among the other injuries caused by the incident. A Health and Safety Executive (HSE) investigation found the company failed to manage the risks when working at height and carrying out the lifting operation. The company also failed to have the right level of trained personnel and supervision in place to carry out these tasks safely and effectively. LSDM of Fourth Way, Wembley pleaded guilty to breaching Regulations 6 (3) of the Work at Height Regulations 2005 and Regulation 4 (1) of the Manual Handling Operations Regulations 1992 they have been fined £450,000 and ordered to pay costs of £1038. Speaking after the hearing HSE inspector Jack Wilby said: “The safety failings by this company are severe and it is lucky that the injuries were not more severe. This incident highlights the importance of planning work, in this case both for lifting operations and working from height, to ensure it is carried out safely.” I've managed to dig into the legislation that makes interesting reading as its not as clear as the HSE website makes out !! Below are clauses 5 & 7 which relate to this discussion, and a very interesting definition.... [Full Legislation is here : http://www.legislation.gov.uk/uksi/2015/51/introduction/made ] Firstly ... “domestic client” means a client for whom a project is being carried out which is not in the course or furtherance of a business of that client; That defines self builders are as domestic clients unless they are building to sell. So onto the PD and PC appointments.... Appointment of the principal designer and the principal contractor 5.—(1) Where there is more than one contractor, or if it is reasonably foreseeable that more than one contractor will be working on a project at any time, the client must appoint in writing— (a)a designer with control over the pre-construction phase as principal designer; and (b)a contractor as principal contractor. (2) The appointments must be made as soon as is practicable, and, in any event, before the construction phase begins. (3) If the client fails to appoint a principal designer, the client must fulfil the duties of the principal designer in regulation 11 and 12. (4) If the client fails to appoint a principal contractor, the client must fulfil the duties of the principal contractor in regulations 12 to 14 Application to domestic clients 7.—(1) Where the client is a domestic client the duties in regulations 4(1) to (7) and 6 must be carried out by— (a)the contractor for a project where there is only one contractor; (b)the principal contractor for a project where there is more than one contractor; or (c)the principal designer where there is a written agreement that the principal designer will fulfil those duties. (2) If a domestic client fails to make the appointments required by regulation 5— (a)the designer in control of the pre-construction phase of the project is the principal designer; (b)the contractor in control of the construction phase of the project is the principal contractor. (3) Regulation 5(3) and (4) does not apply to a domestic client. So.... The architect is on the hook for the Principal Designer in law as regulation 5(3) does not apply to a domestic client and therefore if a domestic client does not appoint a principal designer then the architect has no choice if they undertook any work (ie design / planning ) as they are defaulted into that position in legislation. The law does not allow you to divest yourself of a legal responsibility under statute, so unfortunately an architect cannot decline being PD as they are noted in the statute as taking that role.

How does it make you PC by default ..?? It does if you're a commercial client but reading that excerpt it states it falls to the contractor. And your quoted case would have more likely been brought under the household duty of care in public liability rather than under CDM unless someone was having a particularly bad day ..! Was it civil or criminal ..??

Its bizarre though that you can take responsibility for something unknowingly by someone else's lack of action ..! Although if I ever become PD on anything I'll remember to neatly side step that responsibility ...