On Fri, 05 Jan 2007 19:47:07 GMT, Tony Bryer wrote:

|On Sat, 6 Jan 2007 02:16:39 +0800 Lisa Bates wrote :
| If we raised the floor by 20cms this would hide all pipes.
| (The existing floor is joists and floorboards. The old bath
| suite had a cast iron bath, so can take weight.)
|
| How do we do this?
|
|The easiest way will be to fix some bearers, say 50x75, across the
|existing joists (i.e following the line of the floorboards) at
|900-1200c/s and then 50x100 joists above them at right angles. You
|can then run pipes under the floor in either direction without
|notching. Finish with moisture resisting chipboard or ply.
|
|If you need to lose a WC branch within the floor adjust the sizes
|accordingly.

But remember that there are limits to the height of a step you can have.
Can't remember offhand if 8 inches is within the limit, but I think it must
be as my domestic steps are 8 inches, but check when you have full
drawings/details of the step.
Also you must leave a certain height of ceiling.
--
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