Know the Basic engineering of Hume Pipe

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Reinforcement cement concrete is toughest material composition to deal with if you want to use the surface immediately. You may adopt any technology but you cannot use the RCC structure until it gets at least half of the strength. I am talking about a some critical construction, where time is major constrain such as highway, bridges, culvert and heavy traffic areas.

Invention of Pre-cast concrete has changed the whole scenario of construction and now critical things are being constructed easily like joining the blocks in a toy train.  Not only Pre cast concrete offers us hassle free approach at construction site but gives us quality finish.

Further Pre cast concrete can be broadly classified into many parts and activities.  RCC or Pre cast Pipe is the major civil engineering achievement, which was invented during the 19th century by Mr. Hume an Australian Engineer. The HUME Pipe process for manufacturing the Reinforcement cement is a conventional system, where concrete is being poured manually after preparing the Reinforcement cage.

RCC Hume Pipe

Process of Casting Hume Pipe

Hume Pipe is also known as Spun Pipe as it is manufactured while spinning the cage at the time of pouring concrete. In HUME pipe manufacturing process,  feeding of the concrete is done manually and cages are prepared and fitted into the mould as per the size of the Pipe. Once reinforcement cage is prepared, concrete mix is poured into the spinning mould.  High grade  Concrete Mix above M30 is considered ideal for Hume Pipe manufacturing.
Casting of HUME pipe is done using the HUME Pipe making machine.

Indian Hume Pipe Specification

This specification covers the requirement of RCC Hume Pipe used for culverts, irrigation, drain and Sewer lines.
Class 
Light duty- NP2, Medium Duty- NP3, Heavy Duty- NP4
Density
Optimum water cement ratio and High density.
Length
2  &  2.5 meter and as per requirement
Diameter Of RCC Hume Pipe 
80, 100, 150. 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000,
1100, 1200, 1400, 1600 & 1800.
Joints
Socket and Spigot, Collar Joints and  Flush Joints
Design
Design of the RCC Hume pipe as per IS: 458/2003 (Fourth revision)

Hume Pipe Selection and laying guidelines

  • First understand your site requirements and use of Pipe. Then choose the diameter and type of joints as per the design.
  • Check the quality of Hume pipe at site, thoroughly examine the pipe and ensure that there is no leakage. Simultaneously check the inside Spun pipe surface and ensure smooth finish to minimize the scouring and friction loss.
  • Pipe joints should be fixed properly and on site leakage inspection should be carried out before backfilling the pipes.
  • Before and after  laying of Pipe ensure proper compaction and gradient to prevent any damage due to heavy load after installation. If required, Cement concrete hunching is done.

Conclusion

RCC Hume pipes are used for sewer, road, highway, culvert, irrigation and water supply. Hume Pipe or Spun Pipes are available in 3 classes, normally NP2 and NP3 are manufactured using the HUME pipe manufacturing machines. But heavy duty pipes NP4 are produced using vertical manufacturing process, which is most advanced and computerized system.
Hume pipes manufacturing in India entirely depends on the construction market, which has been  booming for last  two decades due to enormous growth in construction, infrastructure and power sector in India.

(Image Courtesy: koratmember/Freedigitalphotos.net)


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