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dnb last won the day on December 31 2020

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About dnb

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  • About Me
    Building a SIPS panel house on the Isle of Wight, in the muddiest swamp I could find.
    Just call me Shrek!
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    Isle of Wight

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  1. Fit them yourself. You then have the choice of fixings and what products you use to seal them to the walls. I've fitted all of my aluminium frame windows (some documentation in my blog) but as PeterW suggests, I have not fitted my own bi-fold doors yet since I am waiting for some professional assistance (and I need help lifting door size laminated glazing units because I'm an unfit desk flyer!).
  2. It's looking good so far. You could borrow mine should you stray this side of the solent for a summer break and need to display some forward progress. It's the same basic design, and yes there are better designs... I would avoid box section for the top clamp since you'll need to bend pieces more than 90 degrees - triangles are the way forward.
  3. You aren't as far as I can see. And I think you are on the optimistic side at £160, but my maths is based on having a guess at sewerage and surface water costs since I don't have mains drainage. I am building "for but not with" on the rainwater recycling. The house will support it with a header tank for rain water in the attic and space for pumps etc to fill it from an underground tank, but there will be no underground tank until they get to a sensible price. I am unwilling to pay more than I spent on a treatment plant on something much simpler when it doesn't have a realistic payback time.
  4. It would have halved the number of stacks on my build and removed a whole section of foul drain. Cost of parts saved is small, but design time and implementation design runs to many days of effort to get everything as I want it. But I made the call that I would live in the house far longer than I would spend building it. (This may have been a bad call, given the way things are going...)
  5. The office has good air conditioning. I can build in the evening.
  6. Yes. But it was a bit Heath-Robinson involving gaffer tape and a workshop vacuum.
  7. It's about time I put fingers on keyboard for a purpose other than Matlab or Perl. So here is a brief summary of the lack of progress in the woodland. I couldn't pass up a few weeks of sea pay, so progress in May was nil but it was lucrative, helping to offset some of the cost increases. And it gave the scaffolders a bit of time to strike the remaining scaffolding (rather a long wait for this). We're still waiting for the arch windows (another long wait) but all the other windows are fitted. The house is just about water tight so it's time to look at 1st fix and services. There's still a lot to do, and still plenty of supply problems to navigate. Before we did too much work, it was time to tidy up inside. Nic wanted to see what the family room felt like with some representative "furniture" to plot decor and fixtures. The first big job was to dig the pit for the sewage treatment plant. This all went very well with the digger earning its keep. No, I didn't make my daugher dig any of it tempting though it was. I planned to fit shuttering ply the next day because there was going to be a week wait for the concrete. Now for a backward step. It rained more than a little that evening, so I ended up the proud owner of a large garden pond with considerably increased area. Not exactly top of my list of desires. I got a good start on the trenches for the foul drains. Plenty more to do but at least they haven't turned into canals yet despite the rain. So I decided to ignore the problems outside for a while since the floor insulation had arrived and was in the way. Not content with the pool outside, I thought I could make one inside. But then I thought better of it (got caught by the boss for plotting silliness) and fitted insulation instead. It turns out that cutting 150mm insulation to get a good clean straight edge is particularly tricky. So I made a table saw. It's a little bit lethal, so much so that a work colleage called it the "death saw". I think it's a little harsh. It's only a sabre saw with a 12" blade bolted upside down under a home made table... Perhaps the sort of thing @Onoff would make? 😉 It does a very good job. Finally this month I looked at getting the ducting laid for the water main into the house. Very pleased with getting through 300mm of concrete and keeping the trench straight. The only snag is that I "found" the water main I intended to use as the house supply. It was exactly where the plan said, but only 200mm deep. Oh well, I like playing with the digger.
  8. I'm not all that old (despite what my daughter might say). The last time I saw round pin sockets in a domestic setting was in an upmarket part of London when I was labouring for a builder to make ends meet in 1999/2000. They were specifically for lighting of course.
  9. Agreed that the 150mm is hard to cut. I ended up making an extremely large (and possibly lethal) table saw to get the cuts straight and vertical.
  10. I have not had problems with cheap nails in my IM360, but it needs to use Paslode gas because nobody makes alternative gas. The IM360 gas has a bit of propane in with the butane to enable it to work at lower temperatures - I can vouch for this working because I was able to drink all of my coffee at a civilised temperature this winter. I have used Quikload stainless nails, Fischer nails and Firmhold nails all without problem apart from the very occasional double fire. (I also have a significant pile of IM350 pattern gas I can't use.) I am led to believe the 350+ and 360 are near identical when it comes to the nail magazine, so I would not expect too many problems.
  11. I initially thought that. Then I left a tray out in the sun accidentally and it turned into an interesting shape!
  12. Looks about right to me. I have done exactly one SIPS roof, to a very similar way to your drawings. Would agree that fillets to support the eaves protectors are a good plan. I made mine from the offcuts from the splines.
  13. True... Most of the stats I end up doing end up non-Gaussian in some way or from the tails of Weibull distributions. Radar signal processing can be full of horrors seemingly specially designed to defeat standard statistical methods if you keep looking at it in ever more detail because you want to see that really small thing hiding in the clutter.
  14. Thanks for this - fake components are a damned nuiscence both at home and at work.
  15. I didn't mention precision. (But some here have mistaken precision for accuracy.) Or "very good" accuracy come to that! I negelcted any form of specification, so you *should* have accused me of giving a terrible specification... Sensible accuracy is far easier to work with. They obviously don't need to be accurate to 0.0001 degrees, but +/- 20 degrees depending on absolute temperature and a hugely non-linear response (e.g NTC thermistor) is next door to useless when you want 10+ sensors all to do the same thing. Obviously I could construct a calibration scheme for these, but in my experience from work it is often best to spend a bit more effort on selecting well behaved components before thinking you can fix everything in software. Let's say I want to end up with accuracy to 0.5 degrees from -5 to 40 deg C. My thoughts are that the DS18B20 sensors are a good option, have a linear output with temperature and are probably close to meeting the spec without calibration. It is a simple scale and offset to calibrate anyway, so not hard. (No messing with Steinhart-Hart coefficients or anything daft.) Hopefully the scaling is well matched to 1 from the manufacturing process so leaving just an offset. Mostly true, yes. But there are a few temperatures I do want to use as absolutes albeit I don't think I need 0.5 degrees accuracy for these. They are for stage 2 of the plan. Medians work better than means (as a rule). They handily ignore with outliers and the median absolute deviation does a good job of emulating standard deviation with a mutiplying factor.