Stair Design Scotland

[Goggs]

I have a company that appears to be well known, lots of Build It awards etc., that have designed a wooden stair for my SIPS build. They cannot provide structural calculations which is OK as I have a structural engineer who is working on that. They cannot provide material strengths of the oak they are supplying. My engineer has specced D30 solid oak but the manufacturer is saying they never use that spec as it is unnecessary, however, cannot provide a me a spec other than it is knot free and Grade 1? I won't mention their name at the moment but they have 17 years trading in the UK, stairs are built in a factory in Poland, they have been mentioned in several articles in build It magazine for their designs. Does anybody have experience of stair building in Scotland and exactly what needs to be supplied to get the building warrant for the design? This is different in England where the rules are a bit more relaxed apparently.

[nod]

Go to a different company 

Many on here have used Stairbox 

[ProDave]

All we had for building warrant was a drawing showing where the stairs went, part of the usual construction drawings.

 

We got ours from stairbox.  I recall there was a tick box on their design page for English or Scottish regs as there are some differences e.g minimum width.

 

They never specified the grade of wood they were using and building control never asked for it.  All they were concerned with was meeting regs regards width rise and going and banisters meeting regs particularly must be vertical and a 100mm sphere must not pass through.