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Design of Flexible Pavement based on IRC 37, 2018 in Hindi, Pavement design for highways
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- Опубліковано 23 сер 2022
- How to design a flexible pavement using IRC method. IRC:37, 2018, Flexible Pavement design karne ka IRC method, Highway Engineering, Pavement Design, Lane distribution factor, subgrade modulus, base course, subbase course, HMA, SMA, Layer thickness, How to run IITPAVE, IITPAVE software, How to use IITPAVE, Design of pavement with IITPAVE, Provisions of IRC code for flexible pavement design, tensile stress, tensile strain, rutting, fatigue, cracked area, rutting model, fatigue equation, How to determine VDF, Design traffic for pavement design.
Proportioning of Aggregates : • #highways, Three Metho...
Marshall Method of Mix Design : • #highways, Marshall Me...
Vehicle Damage Factor: • #highways, Vehicle Dam...
Cumulative Fatigue analysis of CTB Layer: • #highway, cumulative f...
Sir Kasam se aapke video dekh kar maza aa gaya .
Thanks a ton.
Thank U Sir. This video is much informative and helpful. 🙏🙏
Glad to know it. Please circulate the link in your groups also.
Very helpful to understand the concepts in Hindi. Good initiative sir.
Thanks. Please share with others also.
Thank you sir Very informative video sir if possible please make videos on M.tech Transportation covering all the Topics
There are more than 200 videos on my channel and all of them are on different topics of Transportation engineering. Watch the playlist once. You will find many of your interest.
Thank you sir for such an informative video.
You are welcome. Keep watching.
Very nice and learning video sir thank you so much
Keep watching, there are many other good videos on my channel. See the playlist.
Excellent
Thanks
Great sir
Thanks, Please share the link with your friends also.
Great 👍👍 thanks sir
Most welcome, please share with your friends also.
Great initiative sir very greatful 🙏 to you kindly share how to prepare dpr of full project
DPR is a very wide subject and I do not intend to work on it at present.
Thanq so much soo much for such a informative lectures.
Sir, as per irc:37-2018, clause. 12.3 of page 35 metioned :
For (bituminous + granular case) pavement case, for design traffic of 5, 10 and 20 msa, the Va , Vbe and ‘C” factor values considered are 4.5%, 10.5% and 1.12. And
In CTSB & CTB pavement case, we use Va of 3.5% and Vbe of 11.5% and fatigue equation ‘C’ factor of 2.35.
But in video it is mentioned C = 2.35. Please sir clear this doubt!!!
Section 12.3 gives details of dafault values used to generate the catalogue. You should not use these catalogue in your design. Take guidance from the text given on Page 31 of the code and design the pavement using IITPAVE.
thank you sir your video is very helpful for civil Engineer🙏🙏🙏
Most welcome, Keep watching. There are many more on my channel.
Nice video
Very Nice Sir , Thank you Sir
Most welcome. Keep watching
thank u so much sir🙏🙏
Most welcome, Please circulate the link in your groups also.
thanks sir
Most welcome, Please circulate the link in your groups also.
Sir, lets say we conducted 30 CBR test across the span of our project i,e: for SG and Emb (borrow material comes from different area of hill cut). In this case, should we take 90th percentile CBR of SG and 90th percentile CBR of Emb to calculate effective CBR?
attempt should be to have soil in the top 500 mm of Embankment with uniform CBR value. If not possible, then 90 percentile is a good option although it is not mentioned in any code.
Good afternoon sir,
The video is very much clear to understand.
I have a doubt that in terms of say 50 MSA, if I want to apply a cyclic load of 80kN to a loading area in FE software, then how much repetitions of loading cycles I have to apply?
Sorry Arijit, I have no idea of FE analysis
@@SatishIITR no issues sir.
I just want to get clarified that pavement thickness for design of 5O msa represent that a pavement can sustain 50x10^6 repetition of 80kN load?
@@arijitbanerji2162 Yes, it is correct.
It is a great video sir, Thank you
I have doubt that, in LCR mtd. structural layer coff. (SP59) equation is for untreated base, but if it is CTSB then use same equation or equation will change??
IRC SP 59 is for reinforced pavements. Why should we use CTSB in a geogrid reinforced pavements? I mean why to strenthen the pavement twice?
Thank you very much sir ji
Most welcome, keep watching
First of all thank you very much sir for the explanations and the video..sir my doubt is from the software output file, why we are considering the values of epT as marked by you and why not the value just below your marked one (as both the values are same). For epZ it is clear that the marked one has the higher value.
Choose the higher of the two values, one below the load and another one at radial distance of tire radius
Hello sir
In crack relief layer,we have used SAMI instead of dbm of 100 mm..and generally thickness of Sami is 25 mm and it is not considered as structural layer
My question is at which criteria we are using Sami, instead of 100 mm dbm as crack relief layer
Thank you sir for this vedio
DBM is not not used as a SAMI layer. The purpose of SAMI is to prevent the reflection of cracks to DBM and BC layers due to cracking of CTB layer. DBM will not be able to meet this requirement. Instead a 100 mm thick layer of aggregates is used as a crack relief layer if you want to avoid use of SAMI.
best way
Thank you so much. Keep watching
Good evening sir,
I have one doubt..
For Geogrid design purposes, if client was given both LCR value and MIF values. Which one is consider for design purposes and why?
The LCR is used to determine modified value of Modulus of reinforced base or reinforced subase (or both) layers. If modified values are already known then there is no use of LCR and you can run the IITPAVE to design the pavement with modified values of modulii of reinforced layers.
I hope you got the answer to your question.
Sir ,is installation of glass -grid (Sami) on DBM top layer is correct?
Use of glass grid will reduce the reflection cracking. It can be used.
Sir pl make an video regarding design of white topping rigid pavement.
Yes, it is almost ready. will upload soon
Sir the whole video was fantastic , just the value of c*0.5161 is incorrect, it is coming out to be 1.628 not 1.2128 , although final answer 150 micro strain is correct
Thanks
Hello sir, please make video on IRC - Sp-125 -2019 to help us understand deeply..
OK. Thanks
Thank you very much sir for your very informative session…. I think sir Slide no 33 (time: 36:42) me notes no. 2 me mistake he…please correct me if I wrong.
Yes, you are right. It should be read at top of the subgrade layer. Thanks. Please circulate the link in your groups also.
How we get radius of contact area 150.8 mm , please guide , used for evaluation effective CBR
Calculate it using the equation, pressure = load/area
Good evening sir🙏
At 23.35 why did you put the limited modulus value (100MPa) in elastic modulus of embankment soil for find effective cbr. Can i put it in modulus of borrow material or what will happen when I put limited modulus value in borrow material
IRC 37 suggests that for the pupose of design, the resilient modulus be restricted to 100 MPa.
If borrow material has higher CBR and you take this CBR for the design, then your pavement will be under designed.
Thank you sir
Is it mean that we have to put limited modulus value in those material which have low cbr compare to other or always consider cbr of emb?
Sir one more thing, Suppose if the modulus value is less than 100 or equal to 100mpa in this cond. Should I use cbr of embankment or cbr of borrow material or above process apply again.
@@anuragverma7987 You will have to determine the effective CBR whenever the consruction is in embankment
Hello sir,
I have one doubt...
If we provide the Geo-synthetic between the Subgrade and GSB layer.
as per IRC: SP-59, Whether we have to calculate the modified resilent modulus of subgrade layer or modified resilent modulus of Sub base layer?
Providing a layer of geosynthetic at top of subgrade will improve the Mr of subgrade only and not of the subbase.
@@SatishIITR thanks for explaining sir.. Sir, Is there any method or formula for calculation, I don't find any where how to calculate effective modulus of Subgrade with Geotextile.. If there any method please explain sir...
@@abhinayasaitejareddypalem7423 No, you have to get it experimentally, in my opinion
@@SatishIITR thanks for explaining sir....
please make a video on marshall mix design
THere are two videos on Marshall Method of Mix design. watch them
In Hindi ua-cam.com/video/zMgLPRnwDAk/v-deo.html
In English ua-cam.com/video/G8hrchzKh3U/v-deo.html
Sir please tell me what?
Design effective CBR. is 6%, and sub-graded CBR is 8% and embankment CBR is 3.5%.
But when we checked the CBR of the embankment at one location on the site, the CBR value is 0%. And Boro subgrade soil CBR is 20%. So without removing that soil
We can create a 500mm subgrade, or we will remove soil from the embankment by digging or creating an embankment and subgrade.
zero CBR means pure clay with high compressibility. Check the engineering properties of embankment soil as per MoRTH specifications.
There is no soil on this earth which can have a CBR of 20%, unless it is mixed with aggregates. Even the coarse sand will have CBR around 8-9 percent. I have doubt on this value also.
i have a problem sir when designing flexible pavement, if sub base material is GSB, and base course is cemented WMM. When calculating strain by IIT pave, what should take of Resilent Modules of second layer CTB (stablised with 3% cement WMM). It should be calculated by seperate layer or with granular subbase layer by using IRC equation 7.2 as considering both thickness as single Mr or seperating as for resilent modules of base layer, For Mrsupport , the value should be taken Mr of Granular in place of supporting earth/grade. whey differs Mr value of CTSB and CTB.
so many points jumbled in one question. Resilient modulus of CTB layer is taken 1000 times UCS. In your case subbase is untreated granular layer and therefore it should be treated as a separate layer. For calculating Mr value of GSB use Equation 7.1 with Msupport for subgrade soil.
sir thank you for this video , i have some confusion please solve this problem how to calculate Average No of axles per commercial vehicle, B
You need to have classified traffic volume count of commercial vehicles (number of vehicles and the number of their axles) to get this value of B (taken 2.30 in the example problem. It is the total number of axles divided by the total number of CV.
@@SatishIITR thank you sir
Sir 🙏
Thanks for liking, Share the link with others also
this software available of free version for civil engineering student
how install of this sofware
Isko install karne ki jarurat nahi hai. Download Java in your system and then run the program
Respected Sir please provide Effective CBR calculation with example
OK, noted
Good evening sir ...Are you have AASHTOWare M.E. design software?
No, sorry. I do not have this software
@@SatishIITR okay sir
Sir, please upload parking study related videos.
Ok, will make on this topic also soon.
@@SatishIITR Thankyou so much sir.
Sir aap logo ko itni deep understanding kaisi hoti hai kuch tips dijiye
Haha, It all comes by reading, reading and reading. Aap bhi seekh sakte hai, koi mushkil nahi hai. You can be better than me if you make the habit of reading.
@@SatishIITR aap bol rahe hai na sir mushkil nahi hai na par transport read Karo to RCC gayab ho jati hai RCC dhyan do to survey bhul jata hu par aap kha rahe reading k liye to reading aur frequent karunga Tq for advice sir🙏
concentrate on the subject. ek topic ko kam se kam 2 bar padho, nahi bhulonge. May God bless you.@@Abhinav98712
@@SatishIITR tq sir
Sir,
Good morning!
Please could you share the link of IITpave software for download
download it from here
drive.google.com/file/d/1G8XNwyKSHpiGYZZbi-QFYCticKHi0c8V/view?usp=share_link
@@SatishIITR Si ji Thank you very much for your support.
Sir, how to find the remaining life of pavement please answer
If you know the design traffic and and the time period between the present day and the date of opening to the traffic, you can find how much repetitions of standard axle loads have already gone on the pavement and design life minus these axle load repetitions will be the remaining life of the pavement.
Sir,
Which formula or procedure is there in backend of IITPAVE, so that we can better understand how IITPAVE is calculating Et, Ev?
IIT software is based on Genetic algorithm and linear elastic theory.
@@SatishIITR Sir, thank you for your reply. I want to know the formulae used behind that software so that what IITPAVE calculates, I can calculated manually like we do in normal calculators.
@@PiyushJaangid No, that cannot be done
@@SatishIITR Sir, In DMRB(UK) codes for pavement design, the calculation can be done manually, So can we at least know how does IITPAVE calculates stress strain and deflection at different points of pavement. So that we can reverify our design manually?
@@PiyushJaangid I have no idea. You should write to IIT Kharagpur
In Hindi, it is even better to be understood. Great initiative Sir.
Thanks a lot
Sir please rigid pavement ka is code bhi bataye
Rigid pavement Hindi and English dono language me upload kiya hua hai. IRC 58
Sir can you share your presentation?
You will have more satisfaction and understanding if u prepare it yourself.
how to get the software
It must be available freely on internet. Try
Sir how can I download IITpave software
It comes with IRC code
Hi,
This Pavement design method is very similar to the French Pavement Design (FPD), especially with the influence of the reliability embedded in the material performance models.
Question : where is the empirical part of this Mechanistic-Empirical method ? Unlike the FPD, I see no calibration coefficients. Thanks
This method was developed by IIT Kharagpur under a research scheme and all calibration parameters are embeded in the design software. The concept of Reliability is taken from AASHTO method.
Hello sir
In fatigue model
We have 2 equation for 80-90% reliability
The only difference is coefficient
1.6064 and 0.5161
Supposed we got the value as 100 for other parts
Than Nf =160.64(80% reliability)
Nf=51.61(90%reliability)
How it is possible that at higher reliability, fatigue life is reduced
Reliability is a statistical term which gives you the level of confidence in your prediction. Higher is the reliability, lesser will be the chance of going wrong in your prediction. When you choose 80 percent reliability, your model will predict the fatigue life that is likely to go wrong (on higher side) with a probability of 20 %. when you increase the reliability to 90% then practically you reduce the margin of error to 10 % only. I hope it is clear now.
@@SatishIITR yes sir
Thank you
Hi sir, Can you share IITPAVE software link
Here it is
drive.google.com/file/d/1G8XNwyKSHpiGYZZbi-QFYCticKHi0c8V/view?usp=sharing
This is not accessible sir ....
@@spiritual2605 The link might have expired as you attempted after long time.
@@SatishIITR what is the solution Sir ?
thanqq soo much sir. pl sir send the ppt.
Thanks for watching. Please circulate the link in your groups also.
Sir ctb ctsb ke design Hindi my bta dijiye plz
OK, will do soon. Semester classes chal rahi hai. Do not get much time to work on videos, but will do soon.
Sir ap ke lecture se sare dout katm ho jate mere . Or base mil jaata working ka
Sir what is SMA ??
Stone matrix asphalt.
Watch my video on this topic for details
Sir how to get iit paved
It comes with IRC code. Downloaded files are not working
@@SatishIITR sir its paid Irc 37
sir makes a video on maximum and min temp in Flexible pavement used lestest formula based
@@er.sayanpal OK
@@er.sayanpal Yes, You can buy IRC 37 online.
All theory ms 2
??? समझ नहीं आया
😳
Dbm ki design ms2 ke aco. Hindi my bta dijiye plz
DBM की डिज़ाइन कोई अलग नहीं है। इसे भी मार्शल मेथड से ही करते है।
Hello sir
Can you provide me Excel sheet of FWD for CC pavement?
There are no such excle sheets for FWD. The software comes with IRC code only.