Why are shower trays 760mm wide, I know you can get various sizes and shapes
but my 'logic' says that a tray between the 700mm wide and the 800mm wide
should be 750 not 760. Why has this size been selected? I am fitting a
tray for a neighbour and their old tray (acrylic) was 750mm wide and it fits
into a three sided alcove. The tray they have bought is a 760mm but
actually measures 768mm!! I can chop out the wall on one side but the other
side is one of those 'straw' walls I mentioned a few weeks ago on a
different subject. The new tray (stone resin) has built in upstands so they
need to be set in to allow the overlapping tiles to lay vertical so the door
frame sits vertical aswell. The old tray was higher than the new one so
there is some exposed straw, where the house builders did some chopping out
when fitting the original tray. When I have chopped out some straw can
anybody advise as to what I can cover the straw with to allow the tiles to
stick? The original covering is a paper layer and a plaster skim, would
plaster stick to the straw successfully or do I need to do something else
Thanks for the input but that doesn't make sense as far as 700mm (27.55"),
800mm (31.5"), 900mm (35.43"), 1100mm (43.3") or 1200mm (47.24") are
concerned. It would make more logical sense to be 750mm so there must be a
reason for it, I just cannot think why, if the manufacturers had to make a
mould for 760 why didn't they make it 750?
Nitpick: they'll be using _English measurements_. Prince Albert's _Imperial_
measurements only aply to volume . Albert as part of a _decimalisation_
project introduced inter-alia the florin as a tenth of a pound and
standardised the gallont as equivalent to ten pounds of water - this
resulted in the pint being reclassified as twenty (fluid) ounces of water
rather than the pint=pound of sixteen (fluid) ounces. Albert never changed
the linear measurement system thus an English inch it is.
BTW: the 'other' question about 440ml ... ? that's 4/5 of an Imperial pint 16 fl oz = one English pint (popular amongst the inhabitants of the USA) :)
I've always wondered why beer is sold in 440ml cans. 330ml makes sense -
third(ish) of a litre, 500ml - half a litre, 568ml - a pint (tastes better
to me), even 600 or 660ml has some kind of logic - but 440ml doesn't relate
The only thing that I can think of is so that they can sell you 500ml
for the price of 440ml and announce that you are getting 13.5% extra free!
Most places that sell 440ml cans are more expensive than the shops that
sell 500ml so there is some truth in my suggestion.
440ml is roughly 4/5 pint but who would only want 4/5 pint...
I think both have a historical logic:
760mm is the old standard size - other sizes used to be much rarer -
and it's imperial 2'6"
440ml is standard 330ml with a third extra free - didn't 330ml used to
be the standard, companies offered the third extra, then kept the
larger size. It also works well in practice as it fits in an old pint
glass with a over large head that you get from a can poured badly!
Back onto the original question regarding the exposed straw. Does any body
think that car body filler would do for making the surface suitable for tile
adhesive. The area I am looking at is approx 800mm wide by about 100mm high
and a couple of mm or so deep? The tiles to be fixed are about 330 mm high
by 250 wide so there will be the majority of the tile stuck to the plaster
skim, it will be the bottom third that will be over the straw and this third
will be immediately above the shower tray, if you see what I mean.
I wouldnt trust it. Straw has got a lot of give in it and it would
only take one foot hitting it to crack open the grouting at the very
least. I'd put a horizontal batten as low as you can, digging out the
straw if necessary, fixing the batten to something solid if possible
and deeply into the straw if not, then tile ont that
~~ Anna Kettle, Suffolk, England
|""""| ~ Lime plaster repair and conservation
On Thu, 11 Jan 2007 14:33:56 -0000 someone who may be "John"
That probably depends on how big a hole you have chopped out and
what condition the remainder is in. If it is a small hole just bung
some grout into the hole, otherwise a layer of lightweight filler to
form a smoothish surface would be a good starting point.
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
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