By
Kaushal Kishore
Materials Engineer, Roorkee
The new Solani aqueduct on Ganges canal Roorkee was built with prestressed concrete which allows for longer spans and a simple more robust design compared to old bricks, lime- surkhi mortar masonry arches of the old aqueduct, in which 8.5 crores bricks were used, while iron railing used in the sides of two lanes were imported from England. This is interesting to note that materials bringing those days on ship from England to Indian ports take 6-10 weeks via the Suez canal or 3 to 6 months via the longer Cape of Good Hope. Calculate in it also time taken on road from Indian ports to Roorkee.
After retirement from University of now IIT Roorkee I joined M/S Roffe Construction Chemicals Pvt.Ltdd, Mumbai as it’s Chief Concrete Technologists afterwards I became it’s one of the Director.

AQUEDUCT picture taken on 7/10/2025
For the contractor of above aqueduct I designed M-40 grade of concrete with Roffe superpladticizer. Those interested may read my paper by visiting Google site and log in; Civil engineering portal The Ganges canal by Kaushal Kishore.
I had designed numerous concrete mix design almost all cements of India in this I find Utra Tech cement as one of best cement OPC and PPC both With Ultratech cement I had designed numerous concrete mixes from ordinary strength to M-80 grade concrete, self compacting concrete, shot crete concrete, fibre reinforced concrete, fly ash concrete and more There is life after retirement and after retirement I worked for 30 year’s which includes in free time working in home research and testing laboratory and numerous construction sites visits almost all India and outside India. At my age of 92 years I still work for 12 hours daily.
I had never worked for money. In spite of doing so gigantic work what to say about car I even do not have 2 wheeler not any of my house not a single inch of land in this world only pension from IIT Roorkee and few clothes
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Sir what type of builinding you should build.
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guys? i’m a civil engineering student.. and i need help on how to make a research.. i don’t even have a research title. plss help?
@Mark, the first place to start is;what is your field of interest? In most cases one’s field of interest is motivated by something one saw or thought about (ie if u studied engineering as a passion and not a cash machine.) And you are guaranteed to be set!
M also civil engineer…. C.I.V.I.L (Construction Is Very Important In Life)
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Dear sir, Can you tell me what is theory for deduction in steel length for Bending. and how much deduct?
what r all the materials used in green building?
what is meant by plastic lumber yard?
Which is better..
Supervision or designing for job
cube of M45 has been tested in lab ,it is found that 7 days strength is 52mpa can this mix design can be rejected or on which is codal provisional .
Dear Avinash,
The acceptance criteria of the concrete cubes should be as per Table- 11 of IS 456. It does not talk about the rejection of mix design when you have a higher results than the target strength . But if occasional cube giving strength more or less 15% , then the entire sample is to be rejected. Otherwise you can accept the mix design with higher strength .
But then why to waste cement unnecessarily. You can still optimise the mix by re-adjusting all parameter.
Cheers..
accepted whenever its more than design grade (M45)
IS 10262
reduce the cement content. better strength but it is uneconomic.
Why we provide the top and bottom double mesh reinforcement in raft…..
Did you mean the additional reinforcement other than required from design consideratio ???
due to hogging moment . not in isolated raft.
to keep the proper bonding to distribute load to more spreaded contact area
@Mark, the first place to start is;what is your field of interest? In most cases one’s field of interest is motivated by something one saw or thought about (ie if u studied engineering as a passion and not a cash machine.) And you are guaranteed to be set!
Only chill with working in civil engineering n not like a game with world like quality ignorance…
i need a complete report on particle size distribution using sieves no: 7 to 200 ( wet and dry samples )
hi i am studying civil engineering 2nd year so i want to know about gate exam deeply so will you please send to me a complete details on mail….thank you sooooooooo much…..
Refer IS 2386
I am also a Civil Engineering Student.
please send me code Nos
there are thousands of standards for different cores…which one core is needed by you?
How can I get Eurocodes and BS codes and the CESMM
very useful