#pavements
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- Опубликовано: 24 ноя 2024
- What is Short Panel Concrete Pavements, What is a White Topping, conventional concrete pavements, Short Panel Concrete Pavements, Thin White Topping, curling of concrete pavements, upward curling in pavements, downward curling in concrete pavements, Types of white topping, conventional white topping, thin white topping, Ultra thin white topping (UTWT), Design procedure for conventional white topping, applications of white topping, Design features of concrete overlays, concrete overlays, Critical stress locations in thin white topping, Stresses in thin concrete slabs, stress calculation for design of white topping slabs, IRC Guidelines for white topping, construction steps for white topping, Plastic shrinkage in concrete slabs, failure in concrete slabs,
Nice Explanation.
Glad you liked it
Thank you Sir for this informative video.
So nice of you. Keep watching
Thank you Professor sir for posting.
Hope you liked it. Please share the link with your friends also.
Professor sir i shared all your videos with my network 🙂.
Any standard design sheet prepared like irc 58 ? Or we have to submitt manual calculation for approval to Nh /Sh ?
I have not seen
Nic sir
Thanks and welcome, keep watching
K value of existing bituminous pavement determined from chart, shall we replace this with modulus of subgrade reaction when calculating stresses due to loads. Is it so?
That is the purpose of getting k-value
Hi Sir,
In presented design of TWT it is observed that the proposed panel size is 125 x 125 cm and the cumulative fatigue damage (CFD) is done for Single & Tandem axles. Whereas Clause 8.5 of IRC SP 76 2015 specified that if panel size is less than 130 cm then tandem axle not considered only single axle stresses to be considered in the design. Please suggest..
Yes, correct
Hello sir,
Why we dont use tridem axle load in axle load spectrum?
Effect of tridem axle load on stress is not very significant. See the video on Design of Rigid pavement to understand the concept of cracking in rigid pavement.
Ok sir, Thank You🙏
Sir,
As IRC SP -76 joint sealing is necessary in TWT so pls.clarify
Yes, sealing of joints must be done as per IRC 15.
Sir, but in this video you said that it is not mandatory.
Very nicely explained... We can also use FWD results to evaluate k modulus on existing
Yes, Milind Ji. Thanks
@@SatishIITRsir, can you please explain how to calculate k using FWD for flexible pavement?
We are resilient modules for each layer
Milind ji can please explain me how to calculate K from FWD
Sir,
1. why we did not consider load stress calculation for less than 8 tons ???, is it because it's negligible / no effect in corner stress
2. Can you once tell me the input of E and k values used while calculating Radius of relative stiffness ??
1. Yes, your answer is correct. It is not considered due to negligble effect.
2. E is 300000 kg/cm2 and k is given in the question as 10 kg/cm3, mu is 0.15 and h is 18 cm.
Sir where ia mentioned curing days required ?
Sir how early light traffic can be allowed on TWT pavement please let me know the cl. No.
You can read the code to get this information.
Any difference in design procedure of short paneled pavement and white topping?? and in IRC 76 stress equations, increasing the k value is giving more stresses and thus more thickness requirement. is it correct??
No difference between the two. Intutively, the stress should reduce with increase in K value
Sir wich IRC code follow for Panel Concrete.
IRC SP 76
Sir, What's your view to provide whitetopping in snowbound areas like Shimla. is it advisable ?
White topping is best suited in locations where there is a recurring problem of rutting and cracking in bituminous layer. It is not restricted to any area and therefore must be good in Shimla also.
@@SatishIITR Ok sir, Thanks for the guidance 🙏🙏
Thanku sir for motivating us but Sir in design i could not understand how you took k value as 10kg/cm3...
Further sir you told if stress ratio is less than 0.4 then fatigue life is infinite while in irc 58 calculation of N having denonmenator(SR-.4325) so SR less than 0.4325 will have infinite fatigue life...
K value of 10 is the minimum value specified in the code. The maximum is 15.
Yes, you are correct, the value of SR for infinite life must be 0.45 or less
Sir please explain me in calculation for load stresses for 16T the value of 0.088*log(125/62.15) comes out 0.17699??
It should be 0.0267
What is this equation given in your question. If 16 t load is on a single axle, then calculate stress due to 8 ton load and then double it.
Equation for stresses due to 8 t load is
Log(σ8) = 3.6525 - 0.465 log (k) + 0.686 log (L/le) - 1.291 log (le)
@@SatishIITR Thank You sir, I Got it, Thanks alots sir
Sir plz provide ppt of this
It is easy, you can make yourself