Introduction to biomechanics


An in Depth Home Improvement Article on Everything in the Bathroom (part 1)

Tips and advise when buying youroverflow.BASINS (sinks)Basins are often
bathroom suite: (part 1)POTTERY:Alsoreferred to as sinks. This is incorrect.
known as sanitary ware, ceramics,Sinks are fitted in kitchens and basins
porcelain and ware.are fitted in cloakrooms, bathrooms and
There are four basic areas that affectensuites.The term basin came from the
the quality of pottery and its expecteduse of a jug and basin in the days when
lifespan:these were used to wash yourself in the
The depth of the glaze:bedroom. There are six main type of
The glaze is the glass-like surfacebasin available in the UK.These are
coating which is fired onto the potterybasin and full pedestal, basin and
in the kiln when it is made.semi-pedestal, cloakroom, semi-recessed,
The glass enables the pot to becounter top and under-slung.Basin and
waterproof and protects it fromfull pedestal:This where the basin sits
chemicals, such as bleach etc, over itson full size pedestal and is the most
life.common type in the UK. Normally the
The thicker the glaze generally thewaste pipe and hot and cold water pipes
longer the life. Once this glaze goes,run through the pedestal and into the
wears out, the pot becomes porous,floor.Basin and semi-pedestal:This is
absorbs water and eventually cracks.where the basin sits on a half height
The more you use and clean the potterypedestal which does not reach the floor.
the faster the glaze wears out.They are very common in Europe and
To make the glaze thicker you have tobecoming increasingly popular in the
apply it a layer at a time and each timeUK.When recommending this type of unit
fire it in the kiln. This processcare should be taken to ensure that you
results in breakages within the kiln.Forhave the type of pipe work arrangement
example, if I fire 100 pieces of potnecessary to install the basin. Please
once I may get 99 back in one piece, soconsult your local plumber or bathrooms
the 99 pays for the 100.installer for more
If I then fire the 99 again I may getadvice.Cloakroom:These are usually
80 back in one piece, so now 80 have tofitted without a pedestal, as they are
pay for 100.normally very small basins. There are
If I then fire the 80 I may get only 50some available with pedestals but you
back in one piece, so now 50 have to payare best to check first. Wall hung
for 100. You get the gist of this bybasins are normally fitted with a
now.decorative bottle trap.Semi-recessedThis
If you assume that each layer of glazetype of basin has a bow in the front but
lasts approximately 5 to 7 years you canthe underside has been cut away to
soon see how the system works.produce a flat area. This is because
If you glaze once you get a lessthis type of basin is usually fitted
expensive cost to manufacture but theinto a worktop.Counter top:
product does not last as long in aThis type of basin is either round or
house. The thicker the glaze the longeroval and fits into a hole cut into a
the pottery lasts.Quality of theworktop.Under slungThe type of basin is
clay:The quality of the clay that isfitted under the hole in the worktop.
used to make the pottery is veryThis means that the worktop has to be a
important.solid surface material, such a marble or
The reason for this is that the finerstone.TAP HOLES: Basins come with
the clay the smoother the finish will beone, two or three tap holes.One tap
on the item being made.hole:This type of basin uses a mono bloc
If you use a poorer grade of clay itmixer, which normally incorporates a
will have more grit in it and thepop-up waste. The water is controlled
surface will have a more rippledeither by a lever on the tap or a
appearance.separate hot and cold handle on either
You may also find that because of theside of the spout.Two tap hole:The most
increased grit content the pottery iscommon type of tap configuration has a
heavier than an item of the same sizeseparate hot and cold tap with a plug
made with a finer grade of clay.and chain waste. The hot tap is normally
The finer the clay the more tonnes offitted on the left hand side of the
rough clay you have to use to refinebasin.Three tap hole:There are two type
down to make it.of tap arrangement that can be fitted to
It is therefore less expensive tothis type of tap-hole arrangement.
produce pottery with a coarse grade ofEither a three-hole mixer which is a hot
clay.The overspray or colour: Theand cold valve head and a separate
white colour, or whatever colour itspout, usually fitted with a pop up
happens to be, is applied to the potterywaste.
before the glaze.Or you could fit a pair of basin taps
Each manufacturer mixes their ownand what is known as a chain stay waste.
colour to try to match it to the colourA chain stay waste uses a plug and chain
of the acrylic baths.but the chain is held in place by a
The white colour of the acrylic bath isdisc, which is fitted into the middle of
a worldwide standard set by the acrylicthe three holesBIDETS:Bidets are not
manufacturers.that common in the UK as we are not
You need to be aware of this if younormally raised to use them. However for
client tries to mix and match potterythose that do have and use them there
from different manufacturers.are a few points to consider.For a bidet
Its usually acceptable to have a toiletto work effectively they have to be
and basin from one supplier made tofitted next to a toilet-not at the other
match the bath but if you put a basinside of the room or several feet away.A
from one supplier and a toilet fromUK bidet now come with the tap fitted on
another and then the bath together itthe top and is usually a mono bloc
will stand out like a sore thumb.mixer. There used to be bidets in the
The thicker the colour is applied, theUK, which came with an up-spray or
less fading on the edges takes place andfountain spray as it was known.
the colour is even over the whole of theThis type of bidet is no longer
item.available.BATHS:There are four main
The colour as with the glaze is appliedtypes of material used to manufacture
in layers and then has to be left to setbaths in the UK. These are cast iron,
before the next coat can be applied.pressed-steel, glass reinforced plastic
The fewer coats the quicker the product(GRP) and acrylic.Cast Iron:This is the
can be made and the less cost ismaterial from which most baths used to
involved.The design of the item:The morebe made and is now most commonly used
intricate the design the more expensivefor free standing baths. There are two
the mould is to make and the more chancecommonly held misconceptions concerning
there is that you will not always removecast iron baths.The first is that they
it from the mould without damage.are too heavy. The weight of a standard
Plainer shapes are usually lesscast iron bath filled with water is in
expensive. You should also note thatthe region of 25 stones. The bath is
basins, toilets and bidets are made asusually fitted with four legs which
matched sets.means that the weight on each leg on the
You will often find that the foot offloor is approximately 6.25 stones.As we
the pedestal on the basin matches thewalk across the floor foot to foot we
foot of the toilet pan and that the backactually weight more that this.
of the basin matches the toilet cisternThe second misconception is that they
lid.One general point to be made is thatare cold. This is because years ago when
pottery is often sold in what is knownwe all used cast iron baths the houses
in the trade as a four-piece set.did not have central heating. The bath
That is a basin, pedestal, pan andcan only reflect the temperature of the
cistern. Unfortunately the retailroom that it is in.
customer sees the set as two pieces: theIf the room is warm the bath is
basin and the toilet.therefore warm. There is, however, one
If you use the term four-piece set to apossible exception. If the bath is
retail customer they may think you meanfitted in with a panel as apposed to
a basin, toilet, bath and bidet.free standing it may be that the air
So always explain what you mean by fourtemperature under the bath is cooler due
pieces if you should choose to use theto the holes left by the plumber. If
term.PRODUCT TYPES:TOILETS & WC'S:Therethis is the case, insulation under the
are five types of toilets currentlybath will solve the problem.Pressed
available in the UK.Steel:This is where a layer of steel
These are Wall hung, Back-to-wall,several millimetres thick is coated with
Close-coupled, Low level and Higha stove-enamelled surface. They are most
level.Wall hung:This type of toilet hascommonly used in hotels and commercial
the pan hanging on the wall and thepremises.As the material of the bath is
cistern concealed in the wall behind it.very thin they tend to cool down very
quickly. They also tend to be very plain
More common in mainland Europe, it hasin shape due to the manufacturing
become increasingly popular over recentrestrictions of the material.Glass
years as more people travel abroad.Reinforced Plastic (GRP) :This was the
You do however need to ensure that thefirst type of plastic material used to
pan is supported properly when fittedproduce baths and was used by almost
either by the use of special flooreveryone until the invention of Acrylic.
mounting brackets or the use of a
framework.These frameworks, whichIt has very good insulation properties
support the pan and provide a place forand enables baths of many shapes and
the cistern, are available from severalstyles to be easily produced.The two
suppliers.main difficulties with this material are
This type of WC allows ease of cleaningas follows:1. As the colour for the bath
and as the pan is the only visible pieceis produced in batches there can
of pot it minimises the impact of the WCsometimes be problems with the match to
on the design of the room.Back tothe pottery.2. If the bath is fitted in
wall:This type of toilet is normallydirect sunlight they are prone to the
used mainly when having fittedplasticiser leaking out of the surface
furniture. As with the wall hung toiletand crazing of the surface texture
the cistern is concealed inside theoccurring.Acrylic:This is the most
furniture but the pan is sat on thecommon material now used to produce
floor.Close coupled:This is the mostbaths in the UK and Europe. It has the
common type of toilet in the UK. Thissame characteristics as GRP in that it
type of toilet has the pan and cisterninsulates well and can produce great
joined together.shapes.However, as it is produced to
It is often confused with the low levelinternationally agreed standards of
toilet, so make sure you are clear thatcolour it is now what every pottery
you mean a toilet with the pan andsupplier uses to obtain their colour
cistern physically joined together.Thematch.
advantage of this type is that the panAcrylic comes in several thicknesses
has a splash back built onto it where itmost commonly 3mm, 5mm, 8mm and 10mm.
joins the cistern, so that when men andThere is a common misconception that the
boys stand at the toilet and miss therethicker the acrylic the stronger the
is not so much mess.bath.This is not so. The acrylic is
Toilets are meant to be sat on notthere only to hold the colour and
stood against. If you want to stand upmaintain a waterproof barrier. You will
you should buy a urinal. This toilet isnormally find that the thicker the
easily maintained and is therefore idealacrylic the plainer the style of the
for downstairs cloakrooms and mainbath.The strength of the bath comes from
ensuites where they are likely to get athe glass-reinforced plastic, which is
lot of use.Low level:This type of toiletsprayed on the underside of the bath.
has a freestanding pan and the cisternYou should always look for a full
sits approx 900mm or 36inches up theencapsulated baseboard.This is where the
wall with a short flush pipe in betweenchipboard base that supports the bottom
the two pieces.Before the advent of theof the bath is fully enclosed to prevent
close-coupled toilet this was the mostit from coming away after a few years of
common and is still what most peopleuse.
with older houses have.The sides of the bath should also be
This is why they confuse them with thereinforced to prevent them from bowing
close coupled. They are now mostout when the bath is filled with
commonly sold with traditional bathroomswater.If the bath does bow out in the
and have a chrome or gold flush pipe.Themiddle the result is often that the top
difficulty with this type is that if menledge will drop producing a gap between
or boys use them they are apt to missthe tiles and the bath.BATH SIZES AND
and the pipe goes green.SHAPES:There are a multitude of bath
Once this happens there is nothing thatshapes and sizes available in the UK at
can be done to repair it. They arepresent but they break down into several
generally priced at 50% to 60% higher ingroups.Rectangular baths - Single
price than a close coupled and areEnded:This is the most common style of
bought more for their aesthetic valuebath with the taps at one end and is
than practicality.High Level:This typeideal for one person to bathe in on
was popular in the Victorian era and isthere own as it usually has a gentle
associated most closely with bathroomsback slope which offers good back
of that period.support when relaxing.The most common
The pan is free standing and thesize is 1700 x 700. They are however
cistern sits on the wall approx 1800mmproduced in sizes ranging from 1200 x
or 6 feet up the wall with a chrome or750 to 2000 x 1200. When a client comes
gold flush pipe and a chain pull flush.in saying that there bath is 1680 x 680
this is usually because they do not
It has the same disadvantages as therealize that the bath is fitted into the
Low level when used by men and boys.plaster work when installed so that a
In terms of price, this type isbath that is 1700 x 700 straight out of
normally 50% to 60% more than the Lowthe box is often small when
level. Sold mainly for the aestheticfitted.Rectangular baths - Double
value, all toilets in the UK now have toEnded:This type of bath is common with
flush using 3 and 6 litres of water.people who prefer to bathe with a
It makes no difference which type youpartner as the taps are mounted in the
buy, they all use this amount and as amiddle of the bath. They are becoming a
consequence the high level and low levellot more popular in the UK.
flush no better than the closeHowever to make extra room for the two
coupled.TYPES OF FLUSHING MECHANISMTherepeople the two back slopes on the bath
are two main types of flushingcan often be at quite a severe angle and
mechanisms: the syphon and the dumptherefore make the bath less comfortable
valve.Syphons:Syphons have been used forfor one person to lie out.
many years in the UK as the means ofOnce again they come in a multitude of
flushing the toilet. They work with thesizes, from 1700 x 750 to 2000 x
use of a lever or pull chain.1200.Corner baths:There are two mains
When this is pushed a small amount oftypes of corner bath: equal sided and
water is forced over the syphon in theoffset, where one side is longer than
cistern, which creates inertia thatthe other. Two equal sided corner baths
draws the rest of the water along withare usually available 1100 x 1100, 1200
it and flushes the toilet.They are veryx 1200, 1300 x 1300, 1400 x 1400 and
effective with high levels of water in1500 x 1500.The first three sizes are
the cistern but become less efficient asmore commonly used as shower baths as
the water level falls.the bathing area is too small for most
In the past toilet cisterns originallypeople to use effectively. The 1400 and
contained 12 litres of water, then 91500 are big enough to use by most
litres and now 6 litres for a full flushpeople for bathing.
and 3 litres for a half flush .PeopleThe offset corner baths are usually
who now have a 6 litre flushing syphonavailable in two sizes 1500 x 900 and
type toilet often complain that they1500 x 1000. They are not very effective
have to flush the toilet twice to get itas a bath for most people less than 5
to work.Dump valves:In recent years dumpfeet 4 inches tall due to the internal
valves were not allowed in the UK, butlength.
with the advent of new legislation theyThey are available with or without a
are now fitted in most new toilets.seat in the corner.Shower Baths
The dump valve works by means of a push(Ophelia, Ianthe):These baths have a
button, either a single or a double one.larger area at one end to allow for more
As you press the button it lifts a valveroom for showering. They are usually
that instantly releases all the watersupplied with a bath screen made
down through the toilet.especially for the shape of the
This makes this type of flushingbath.Space Saver baths:These baths are
mechanism very effective with low levelsmade to a special shape usually thinner
of water.Overflows:Most old types ofat one end to allow for more room to fit
toilet have an overflow which let thefurniture or make more room for pottery
water flow outside the property if theor even a shower cubicle.Written by Neal
ball valve mechanism fails. This isBaker on behalf of and
called a visible overflow.Most new types
of toilet have an overflow which flowsonline retailers of bathroom furniture,
back into the toilet bowl if the ballbathroom suites and bathroom accessories
valve fails. This makes them easier toin the UK.
install. This is called an internal



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