SANITARY APPLIANCESUnderstand the design requirements for sanitary appliance used in all types of building.

CHAPTER 1

Sanitary Appliances

Sanitary appliances are divided into two main groups:

“Waste” appliances “Soil” appliances

DESIGN REQUIREMENT A sanitary appliance should be designed so that its fouling area is reduced to the minimum and should have durable, easily cleaned and non-absorbent surface.

Before starting to design the floor plan of any structure, the designer needs to know the

following information:-a. Types of buildings : i. Residential Building ii. Public Building / Commercial / Office

Buildingb. Consumer

TYPES OF SANITARY APPLIANCES

Fitting used for cleansing and disposing of waste product, most sanitary appliances fall into

two groups:-

i. Waste appliances ( bidets, wash basins, sinks, showers / baths tubs , drinking fountains )

ii. Soil appliances ( water closet, urinal ).

All sanitary appliances are made of non-absorbent, non-corroding, smooth and easily cleaned material and usually made from ceramic ware, vitreous enameled cast iron, vitreous enameled pressed steel, stainless steel or plastics (thermosetting and thermoplastic).

WATER CLOSET

This is the most common type of plumbing appliance and also known as a toilet.

Water closet are usually subdivided according to where they are mounted (floor mounted and wall mounted ) and how they are flushed (tank type and flush valve type ).

The most widely used pattern is the “wash-down”, in which the contents of the pan are removed by gravity water flush.

WATER CLOSET

The pan shape has been developed from the earlier long and short hopper types, to provide the minimum of fouling area. They are designed to maintain a 50 mm minimum water seal.

The outlet may be obtained left or right hand and also ‘P’ or ‘S’ as shown; it may be flushed from a high or low level flushing cistern.

The high-level cistern provides a more effective flush compare to low level cistern.

WATER CLOSET

WATER CLOSET

FLUSHING CISTERN

Function :Used to flush away the contents of soil fitting to the drain.

Specification: Fixed 2m and 0.6 m above floor level. Capacity of the cistern from 5 to 15 liters (popular : 9 liter)

PISTON FLUSHING CISTERN

The piston type flushing cistern, operates as follows:

•When the lever is depressed sharply, the piston is lifted, which displaces water over the siphon.

•Water discharging down the flush pipe takes some air with it and creates a partial vacuum in the siphon.

•The greater air pressure acting upon the water in the cistern forces water through the siphon until air is admitted under the piston, which breaks the siphon action.

AUTOMATIC FLUSHING CISTERN

Automatic flushing cistern designed to discharge its contents of water at regular intervals into a urinal.

The rate at which the water will flush depends upon the rate at which the water is fed into the cistern and for a single installation this should not exceed ten liters per hour .

These flush water automatically once in 10 – 15 minutes.

To prevent wastage of water from these cistern, at times when the cistern is not used such as at weekends, an Automatic Flow Cut Off Device should be fitted.

Bell-Type Flushing Cistern

• The bell-type flushing cistern is rather noisy but may be used in factories and schools.

• The cistern is operated by the chain being pulled down which also lifts the bell.

• When the chain is released the bell falls thus displacing water under the bell down the stand pipe.

• Siphonic action is then created which empties the cistern.

URINAL

They are designed to accept and dispose of liquid They are designed to accept and dispose of liquid human wastes only. human wastes only.

The types of urinal are ceramic slab , stall type and The types of urinal are ceramic slab , stall type and bowl type. bowl type.

The slab type is cheaper than the stall type , but it The slab type is cheaper than the stall type , but it does not provide the same degree of privacy. does not provide the same degree of privacy.

The installation of ceramic bowl-type urinal, which The installation of ceramic bowl-type urinal, which have less fouling area then the slab and stall urinals. have less fouling area then the slab and stall urinals.

SLAB URINAL STALL URINALSTALL URINAL

BOWL URINAL

BIDET

A sanitary appliance primarily A sanitary appliance primarily designed to wash the excretory designed to wash the excretory organs and may also be used as organs and may also be used as footbath.footbath.

The hot and cold water supplies The hot and cold water supplies are 13 mm internal diameter are 13 mm internal diameter and hot water may be supplied and hot water may be supplied to the rim.to the rim.

Bidets which are fitted to main Bidets which are fitted to main supply must be of a design supply must be of a design which is not equipped with a which is not equipped with a submersible ascending spray, submersible ascending spray, but must be of the over-rim but must be of the over-rim type, i.e. pillar taps. type, i.e. pillar taps.

WASH BASIN

Many wash basin designs are available, ranging from surgeon’s basin to small hand basin.

They can be obtained to fit into a corner of the room and may be supported on brackets, a pedestal or by a ‘built in’ corbel.

SINK Sinks of all types are in wide use in a multitude Sinks of all types are in wide use in a multitude

of different applications. of different applications.

Such as Surgeon’s scrub sinks, service sinks, Such as Surgeon’s scrub sinks, service sinks, lavatories sinks, bar sinks, kitchen sink are just lavatories sinks, bar sinks, kitchen sink are just a few of the more common ones used in a few of the more common ones used in plumbing systems. plumbing systems.

Sinks can be made of porcelain, stainless steel, Sinks can be made of porcelain, stainless steel, plastic, fiberglass or any other nonporous plastic, fiberglass or any other nonporous material. material.

Sinks can be wall mounted, floor mounted, set Sinks can be wall mounted, floor mounted, set into countertop or free standing with legs.into countertop or free standing with legs.

SINKS

BATHTUBS A sanitary appliance in which the human body can be A sanitary appliance in which the human body can be

immersed and cleansed. immersed and cleansed.

Bath tubs are available in enameled cast iron, pressed steel Bath tubs are available in enameled cast iron, pressed steel or in various types of plastics and acrylics. or in various types of plastics and acrylics.

Bath tub should be fixed as low as possible to assist getting Bath tub should be fixed as low as possible to assist getting in and out. The standard length of a rectangular bath tub is in and out. The standard length of a rectangular bath tub is 1.7 m. 1.7 m.

The water supply may be pillar tabs or by a special fitting The water supply may be pillar tabs or by a special fitting incorporating a diverter and a shower.incorporating a diverter and a shower.

For domestic installations, the taps and supply pipes are 19 For domestic installations, the taps and supply pipes are 19 mm internal diameter, but for institutions these are mm internal diameter, but for institutions these are sometimes enlarge to 25 mm, to increase the speed of sometimes enlarge to 25 mm, to increase the speed of filling.filling.

BATHTUBS

SHOWER

A shower is a device for washing, typically consisting of an enclosed area and an overhead nozzle.

To use a shower a human stands in the enclosed area while the nozzle sprays water down on the body.

Showers are primarily used for hygiene and washing purposes and are often installed in bathrooms.

SHOWER TRAY

A preformed tray that creates a hob A preformed tray that creates a hob in the shower recess area.in the shower recess area.

Size of shower tray :-Size of shower tray :-

i. 915 mm x 915 mm x 178 mmi. 915 mm x 915 mm x 178 mmii. 760 mm x 760 mm x 178 mmii. 760 mm x 760 mm x 178 mmiii. 610 mm x 610 mm x 178 mmiii. 610 mm x 610 mm x 178 mm

MATERIALS

The materials from which The materials from which appliances are manufactured are appliances are manufactured are depend upon the type of fitment depend upon the type of fitment and the use of building into which it and the use of building into which it is to be installed. is to be installed.

In general terms the material must In general terms the material must be non – corroding, non-absorbent be non – corroding, non-absorbent and easily cleaned. and easily cleaned.

MATERIALSMaterialsMaterials DescriptionDescription

CeramicsCeramics Popular material for such appliances as WCs, wash basins, urinals, Popular material for such appliances as WCs, wash basins, urinals, sinks, and shower trays. The term ceramic means a substance made by sinks, and shower trays. The term ceramic means a substance made by firing clay. The strength and degree of impermeability of the materials firing clay. The strength and degree of impermeability of the materials depends upon the composition of the clay mixture and temperature at depends upon the composition of the clay mixture and temperature at which they are fired.which they are fired.

Glaze earthenwareGlaze earthenware This produces appliances of good colour, lends itself well to formation This produces appliances of good colour, lends itself well to formation of complicated shapes and relatively cheap. It is used mainly for sinks of complicated shapes and relatively cheap. It is used mainly for sinks and W.C . pans and W.C . pans

Glazed fireclayGlazed fireclay This produces a tough appliance which is resistant to knocks and hard This produces a tough appliance which is resistant to knocks and hard wear. Fireclay appliances such as urinals, sinks and W.C. pans are wear. Fireclay appliances such as urinals, sinks and W.C. pans are often used in schools and factories.often used in schools and factories.

Glazed stonewareGlazed stoneware This produces a tough appliance which is resistant to knocks and hard This produces a tough appliance which is resistant to knocks and hard wear, but, unlike earthenware and fireclay, the material is non-wear, but, unlike earthenware and fireclay, the material is non-absorbent even when it is unglazed. It is mainly used for channels, absorbent even when it is unglazed. It is mainly used for channels, sinks and urinal stalls.sinks and urinal stalls.

Vitreous ChinaVitreous China This lends itself to fine detail and good finish, but is not as strong as This lends itself to fine detail and good finish, but is not as strong as fireclay and is therefore unsuitable for buildings where hard wear is fireclay and is therefore unsuitable for buildings where hard wear is expected, such as schools and factories. It is, however used expected, such as schools and factories. It is, however used extensively in houses and hotels. The material does not absorb water extensively in houses and hotels. The material does not absorb water even when the glaze is broken, can be used to manufacture almost all even when the glaze is broken, can be used to manufacture almost all types of appliances, in various colours.types of appliances, in various colours.

MATERIALSMaterialsMaterials DescriptionDescription

Acrylic plastic Acrylic plastic (Perspex)(Perspex)

This is produced in many colours, it is light in weight This is produced in many colours, it is light in weight and relatively cheap. It takes a hard gloss finish and and relatively cheap. It takes a hard gloss finish and has an excellent appearance. Hot water however, tends has an excellent appearance. Hot water however, tends to soften the material and baths made from it must be to soften the material and baths made from it must be supported with metal cradlessupported with metal cradles..

Glass-Reinforced Glass-Reinforced PolysterPolyster

This material is more expensive than acrylic plastic , This material is more expensive than acrylic plastic , but is much stronger. A good gel coat finish is essential but is much stronger. A good gel coat finish is essential to protect the reinforcing fibres and various colours to protect the reinforcing fibres and various colours may be obtained.may be obtained.