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Yes. I've seen that.. Ok that makes more sense. I was wondering on how/ room would work.

One thing that is not so easy is the air permeability. I cant grasp how to set specifications to achieve this.

I downloaded from: http://www.stroma.com/certification/software/sap-software-fsap How am i getting on? well. its hard without precise values for 'everything' and the default SAP don't tend to pass. Other than that and the creation of bespoke surfaces (for which I far prefer build desk on...

So i've continued to play around with FSAP.. and you're not wrong with what you said! Getting the DER level down anywhere near TER is proving rather tricky

So the table shows the minimum accepted for a singular element as opposed to the minimum being practically applicable to each element. Which would in tern explain why BC said expect a 20% increase on these values. All very much like the 0.45x0.45 for egress. as mins they would never work to...

Thanks. What does table in appendix a refer to then? page 23 for? These values again are very different. Have downloaded a copy of fsap and am slowly going through the required entries. When you say likely to be much tougher. What do you mean. BC can Impose over the minimum?

Well at least I got the letters right even if not the order. It may be that going this route would be more economical and more logical. However BC disagreed that the U values were more relaxed for new build on the basis of a 20% improvement upon given figures? What could he have meant by...

I'll second that. It is imperative that it is sorted. If you want to see how suseptible it is for condensation and damp issues.. download a copy of builddesk and recreate one of the walls. http://builddesk.co.uk/downloads/

Did you send it recorded? Did you keep a copy? IS it really sent? FOr the sake of £30 It may have been more tactical to get the breather membrane issue sorted prior to sending the letter.

Thank you. That makes sense. More sense than what BC stated today who said the values stated in tables need need to be improved on by 20% anyway. and some sort of 'PAS' test has to be done. To be honest the conversation was so hurried that I didn't quite grasp the point and had to rush to the...

Overall, it maybe best quit while you're ahead or even. Alterantively get him to requote on labour only and you stay in charge of materials with him confirming by email what will be needed and when. The breather is vital element else damp will get through and it will rot. Compared to getting...

Can anybody offer any logic behind why New build U values requirements appear less stringent than those in for new elements in existing? Is it the assumption that doing so will increase the U value of overall property if other thermal elements are upgraded? If so is there/ can there be a...

Have you paid this guy anything or all upfront?

Just found a copy of trada http://www.dfpni.gov.uk/d.pdf and it works in a more precise way specifying by deadload brackets.

Thanks. Not sure if eurocodes also but certainly complying with NHBC which specifies: "dictated by maximum floor deflection = 0.3% of the span up to a maximum of 12mm." Thanks guys. puzzle solved. :)

Ahh.. I noticed that my initial deflection was incorrect. I also noticed that when removing the timber's own weight... then deflection fails by just 0.0001xLength. and is 13.61 . However i noticed that max deflection is set at <=0.003 x Length Where l/320 =0.003125 So what doesn't...

Thanks.. no panic just curious. E= 10800N/mm2 which (from what I read) is Mean value for c24. source: http://www.roymech.co.uk/Useful_Tables/Timber/Timber_design.html Is that correct? Settings are Based on load sharing system but god know what i'm doing to make it disagree with standard...

Hi, From what I gather intermediate floor domestic Live load = 1.5kN/m2 Dead = 0.7-1kN/m2 On 400 centres and using 0.7kN for Dead load... if I am not mistaken my loads/ linear meter of timber are.. D= 0.7 x 0.4 = 0.28 Live=1.5 x 0.4 =0.6 I chose Timber c24 49 x...

Thanks.. that would make sense.. i should have also explained what to me is obvious.. if only.. a) time allow for me to do that now.. b) New windows were in with alteration to openings done. c) more free funds to get somebody in. d) had made a decision re external insulation...

How can I protect the bricks from the elements. Over eager and without a clue of how long things were going to take, over the sunny summer months, I decided to take off the horrific pebble dash from the walls of our little bungalow. We are still not able to live there so there is no heating...