What kind of pipes are used for sewage lines?

Answer 1

1: Vitrified Clay Pipe (VCP)is pipe made from clay that has been subjected to vitrification, a process which fuses the clay particles to a very hard, inert, glass-like state. VCP is commonly used insewer gravity collection mains because of its reasonable price and resistance to almost all domestic and industrial sewage, particularly the sulfuric acid that is generated by hydrogen sulfide, a common component of sewage. Only hydrofluoric acid and highly-concentrated caustic wastes are known to attack VCP. Such wastes would not be permitted to be discharged into a municipal sewage collection system without adequate pretreatment.2: Reinforced Concrete Pipe (RCP):

Concrete pipe is the most durable and longest-lasting pipe available for underground usage. The service life for concrete culverts, storm sewers and sanitary sewer pipe can exceed more than 100 years. It can resist all kind of sewage chemicals and price is low compare to other products.

3: uPVC pipes

GENERALThe physical, chemical and mechanical properties of uPVC pipes and fitting demonstrate their superiority in utility and applications over conventional system.

DENSITYThe density of uPVC is approximately 1.43g/cm3, which is almost 1/6th the weight of cast iron and steel, thus making it much cheaper to transport and easier to handle during installation.

MECHANICAL STRENGTHThe uPVC pipes are suitable even in varying conditions, because of its mechanical strength. This can be gauged from the fact that the tensile, flexural and compressive strength of uPVC is around 450 kg/cm2.

HYGIENICuPVC pipes offer the most hygienic means of fluid transportation. They are highly capable in fighting attacks by fungi and are not subject to contamination. The inside surface which is extremely smooth, does not support any growth, encrustation or fuming, and no odour or taste is transmitted to the fluid being conveyed. This property is of prime importance for the transportation of potable water to towns and villages.

CHEMICAL RESISTANCEuPVC is unaffected by most concentrations of acids, alkalis, organic chemicals, oils and fats. This resistance to corrosion by most chemicals makes uPVC pipes indispensable for contemporary industrial applications and for sewerage purposes.

FLEXIBILITYBeing a thermoplastic material, uPVC is more capable to withstand deformation due to earth movements. uPVC pipes in this respect are considerably more popular than metallic and asbestos cement pipes, which can collapse under stress levels.

FIRE RESISTANCEuPVC pipes do not support combustion and are self-extinguishing, a fact that has been proven over a considerable amount of time. They are, therefore, ideally suited for use in buildings and other constructions.

HYDRAULIC RESISTANCE AND FLOW CHARACTERISTICSFor their smooth inner surface, uPVC pipes allow a greater flow of water than an identical size of conventional piping. The Haze-Willam's constant for flow for uPVC pipe is around 150, which is higher than that for conventional materials. The head loss of any proposed uPVC pipeline can be readily calculated.

4: Fiberglass (or fibreglass) (also called glass-reinforced plastic, GRP, glass-fiber reinforced plastic, or GFRP), is a fiber reinforced polymer made of a plastic matrix reinforced by fine fibers of glass. It is also known as GFK (for German: Glasfaserverstärkter Kunststoff).

Fiberglass is a lightweight, extremely strong, and robust material. Although strength properties are somewhat lower than carbon fiber and it is less stiff, the material is typically far less brittle, and the raw materials are much less expensive. Its bulk strength and weight properties are also very favorable when compared to metals, and it can be easily formed using molding processes.

5: Perforated sewer pipe -- usually made of PVC in modern systems -- is embedded in gravel in an underground trench below the level of the septic tank. Your septic tank is the pretreatment part of your septic system, where bacteria digest the septic solids. The tank releases partially processed liquids to flow down a closed pipe to the septic field, or leach field. While the septic field is at a lower elevation than the tank, the field and the pipe inside it must be level.