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- Опубликовано: 6 сен 2024
- How to design a flexible pavement using #IRC method. IRC:37, 2018, Flexible Pavements, Highway Engineering, #Pavement Design, Lane distribution factor, subgrade modulus, base course, subbase course, #HMA #SMA Layer thickness, #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.
My other videos in Highway Engineering
1. Proportioning of Aggregates : • #highways, Three Metho...
2. Marshall Method of Mix Design : • #highways, Marshall Me...
3. Vehicle Damage Factor: • #highways, Vehicle Dam...
4. Cumulative Fatigue analysis of CTB Layer: • #highway, cumulative f...
6. Overtaking Sight Distance: • #highways, Overtaking ...
7. Design of Overlay by FWD: • #pavementevaluation, #...
8. Design of Mix for GSB Layer: • #highways, Laboratory ...
9. Effective K-value of subgrade Reaction: • #rigidpavements, How t...
10. Design of Mix for CTB Layer: • #highways, Design of C...
11. Design of overlay by Benkelman Beam: • #highways, Design of o...
12. Design of Rigid Pavement IRC method: • #highways, #pavements,...
13. Drainage Layer in concrete pavement: • #highways, #rigidpavem...
14. Design of Dowel bars and tie bars: • #rigidpavements, #high...
15. Design of CC Pavements for Low Volume Roads: • #pavements, #highways,...
16. Mix Design for Hot Recycling of Pavements: • #RAP, #highways, #mixd...
17. ESWL and ESAL : • #ESWL, #ESAL, #highway...
18. Cracking in Flexible Pavements : • #pavements, #highways,...
19. Design of super elevation: • #highway, #superelevat...
20. Rutting in Flexible Pavements: • #rutting, #pavements, ...
21. Design of Flexible Pavements for Low volume Roads: • Design of Flexible Pav...
22. Transition Curve: • #highways, #curve, #tr...
23. ITS and TSR of Bituminous Mixes: • #Highways, #ITS, #TSR,...
24. Stone Matrix Asphalt (SMA): • #SMA, #OGFC, Stone Mat...
25. Aggregate Gradation: • #gradation, #aggregate...
26. Resilient Modulus of HMA: • #highways, Resilient M...
27. Warm Mix Asphalt (WMA): • #WMA, #Highwayconstruc...
28. Slurry Seal: • #slurryseal, #roads, T...
29. Prime Coat and Tack Coat: • #primecoat, #tackcoat,...
Thanks a lot sir for giving such clear explanation of IRC 37 and IIT PAVE.
Thanks. Please share the link with your friends also
@@SatishIITR Sure sir
Thank you very much for your valuable time and effort to teach us this great lesson sir..!
It's my pleasure Waruna, Please share the link in your friends' groups also.
It is an excellent lecture on design of flexible pavement using IRC:37-2018.
Thanks Professor. Keep watching and recommend to your students also.
@@SatishIITR Sure sir.
Another great lecture. Keep these coming Sir!
Thanks
Dear Bupendra, I was not aware that you have moved to IIT Jodhpur. Good transfer.
@@SatishIITR Thank you so much Sir! We have a very new department here. Trying to set up a good laboratory.
After so many years, I attended lecture and enjoyed
Thanks, keep watching.
Thank you very much sir ! It's a really a very useful class to me and I have learnt more from you sir ! 🙏 please make such a special and more valuable and useful video !
Thanks once again for your effort to help us ! Please continue 🙏with good videos !
Thanks Prathibha, for your nice words. Please share the link with your friends. Watch other videos also. You will certainly like them.
Thanks a lot sir for giving such clear explanation of IRC 37 and IIT PAVE.
Thanks for watching, please share the link with your friends also. I have dubbed it in Hindi also, if you are interested to watch.
Excellent presentation on flexible pavement design covering all the provisions of IRC 37-2018...
Thanks
Thank you very much for sharing this Precious Knowledge. Definitely adds value to Indian Engineers. Thank you.
Glad it was helpful! Please share the link with others also
@@SatishIITR Sure will share.
Thank you so much Sir for providing the lecture on flexible pavement design including the IITPAVE software also. It's very useful for us.
Thanks Pritikana for your comments. Please share with your students also.
Yes Sir, I will.
Excellent Lecture Sir.Your style is same as it was in year 1991 when you taught us railway Engineering.
Thank you so much my dear for remembrance. Where are you now a days. would love to connect
@@SatishIITR I am serving in Border Roads Organization and presently posted in Bhutan as BRO is doing some strategically important Projects here .I have send request to you on LinkedIn. Regards
the lecture is very nice sir, I learnt for the first time and got understood only due to this vedio and ur simple explanation. kindly share with KENPAVE software also pls.
KENPAVE is not used here. I do not have this software
I really appreciate the concept.. kindly sir do a video of how to determine MSA by traffic data and growth factor of traffic by TVC survey.
Thanks. will certainly do.
Thank you Sir for this great lecture. Thank you for your effort in helping us.
It's my pleasure, keep watching and share the link with your friends and colleagues also
Wonderful and simplest explanation, thank you Sir
You are most welcome, keep watching
good explanation and useful teaching for Road engineers. Thanks a lot for your efforts and welcome more videos' like this sir.
Thanks for your kind words. Keep watching. There are many more videos on my channel.
@@SatishIITR sir,pls upload IITPAVE software free downloads
@@chandrasekarm3463 I do not know how to upload, but I can send you through email
Very useful video lecture sir and hopefully waiting next video for Highway related sir
yes, on this Monday, Sept 20
Thankyou so much Sir. Your videos are very helpful and provides an easy way of learning.
Thanks a lot. Please share the link with your friends.
Sir
Thank you so much. It is an excellent coverage of pavement design aspects. 👍👍
Thanks Mr. Manoj. Keep watching
A very comprehensive lecture. Nice one Sir.
Many thanks.
Thank you for making huge usefull videos, if possibel please attached pfd ppt with vedios, it's help to everyone 🙏.
Sir please make vedios on types of vehicle, axel configuration, max turning angle allow, types of vehicle use for urban and rural design...
Thanks AK for your comment. Your suggestion is noted down for future video.
Thank you sir, such an informative lecture
Thanks, please circulate the link in your groups.
Thanks
Thank you sir for this wonderful video.
Thanks Pallaw, Share the link with your friends also. Keep watching.
Good Evening Sir... Sir, As per IRC 37: 2018, The unbound base layer consists of wet mix macadam, water bound macadam, crusher run macadam, reclaimed concrete, etc., conforming to MoRTH Specifications[23]. Wet mix macadam may also consist of blast furnace slag mixed with crushed stone meeting the MoRTH Specifications. The thickness of the unbound granular layer shall not be less than 150 mm except for the crack relief layer placed over cement treated base for which the thickness shall
be 100 mm.
My query is that we only changed the name from WMM to Crack relief layer and thickness from 150 mm to 100 mm where CTB was used below it, but what properties have changed in WMM or Crack relief layer as no specifications have been changed while converting WMM to crack relief layer. And also the FDD has been given a minimum of 100% of MDD for Crack relief layer , so upto what extent (percentage of compaction) we can achieve at site.
Crack relief layer has the same gradation as WMM and therefore all physical tests as required for WMM should be applicable to Crack relief layer also ( I uploaded one video on Crack Relief Layer also). Further there is no concession given in the code for field density in the case of crack relief Layer also. 100 percent is needed.
who is enjoying this simplified presentation on the flexible pavement design
Did you not enjoy it???
Nicely explained sir, Thanks 👍
Happy to note that you liked it. Please circulate the link in your groups also.
Thank You for the explanation. I could not understand why the resilient modulus of the subbase is taken as 0.2(h^0.45)* Mrsupport. Does the property(here the resilient modulus) of a material depend on its thickness(h) and the property of the supporting layer? Why should we calculate the resilient modulus instead of taking it from the test or laboratory value like the resilient moduli of materials of other layers?(From Nepal)
Yes, ideally it should be determined in the laboratory. But the method of finding Mr value of granular layer is not simple and requires sophisticated equipment, because there is no cohesion in the material. This Equation is taken from AASHTO.
@@SatishIITR Thank you so much!
Very well explained sir, kindly cover overlay design by both FWD and BBD
Yes, I will certainly make videos on FWD and BBD also. Keep watching
Sir 2 lane single carriage way ka ldf .75 hai ya .5?
It is 0.75
Thank you sir
Welcome. Please share the link with others also.
Sir,
If the thickness of DBM in design is given 100 mm and laid in 2-layer in the thickness of 50 m each.
Then my question is according to IS -37 is that whether the 1st layer is DBM (G-1) and 2nd layer is DBM ( G-2) OR both the layer will design according to DBM ( G-2 ) based on thickness
you can do both ways, but design for lower layer and upper layer will be different. The bottom layer must be desiged as bitumen rich mix at lower air voids as suggested in the code.
Sir, in 7:50 when they are considering 20kn on one wheel..finally 20*4 =80 kn.....
Why haven't they considered the axle load......b/w wheels.
Although your question is not very clear to me, yet I would say that the analysis is based on the wheel load and not the axle load.
Thank you very much sir !
Most welcome!
Sir, at 19:11, if the embankment soil CBR is less than 5% and borrowed soil CBR is more than 5%, in this case when the Mrs is more than 100 and we limit Mrs to 100 and while recalculate the CBR which CBR equation we need to use?
There is no need to calculate CBR back as it is not a design parameter.
Sir, At 13:29 under the Input you have mentioned Single wheel load as 40000 N.
But when we consider the standard Axle load as 80000 N, the load of single wheel will be 20000 N but you have mentioned 40000 N can you please clarify?
It is 20000 N only, may be a mistake. Thanks
Very good lecture sir thank you for that.... have some questions
1. No of oRiginal ground CBR values are coming in filed ( interval of chainage). All cbr values are different that case how to chose cbr?
2. CBT OR CBST layer practically where to use ( cold conditions or warm conditions)?
3. Is it possible to more Elaborate how to collected data, analysis and calculate actual traffic growth rate?
My answer to your queries
1. If the type of soil varies along the length of the pavement, determine CBR (three samples at least) for each type of soil and then determine 90th percentile CBR value (if Expressway, NH, SH and Urban Roads) or 80th percentile for other categories of the roads and design the pavement.
2. There is no restriction of CTB or CTSB for cold or warm condition. You need to test it for durability as per weather conditions
3. This is a different topic all together and will try to discuss in another video.
@@SatishIITR 🙏 sir
Thank you very much Sir
Most welcome. Please share the link in your groups also.
Thankyou so much doctor
Thanks for liking the video. Please circulate the link your groups also.
@@SatishIITR yes, doctor i have already done that.
Sir, in this lecture you mentioned CTB, GSB combination (6th cross section), we can use SAMI or AIL. If my design traffic is 20 MSA shall I use SAMI.
If not on which criteria, I should consider for providing these crack relief layers.
Yes, you can
thnq so much sir...how i can get IIT PAVE Software....
It comes with IRC code. I had a copy of this software and I shared it with many on my channel. My copy got infected now and is not working.
Thanku sir for such an exceptional video. Dear sir please provide me the IITPAVE software.
IITPAVE software comes with IRC code in a CD. It has several file folders. I can send the complete folder to you through email only.
@@SatishIITR sir please give me with your mail Id.
I think Air voids shall be 3.5% at timing 33:35
Yes. Thanks
This should be corrected in IRC 37
Sir I would request you please make a video on CTB and CTSB layer analysis using IIT Pave software
will do.
ok sir tq
We will be waiting for the lecture soon
In case of Cement Treated Base design, should IIITPAVE be run at two different tyre pressures? One at 0.56 MPa to check tensile strain below DBM and second at 0.8 MPa to check tensile strain below CTB?
CTB should be checked only for 0.8 MPa
@@SatishIITR and the BT layers in case of CTB for 0.56? Checking for strain only, not CFD.
Sir, in case of CTB Layer where Prime coat can be used?
1. On CTB layer prior to SAMI
2. ON SAMI layer prior to BT Layer
3. Prime coat shall not be used ON CTB or SAMI
Please provide Your valuable guidance
In my opinion, prime coat will be required only if you are using crack relief layer of aggregates only.
Sir, if both the equation of Elastic modulus/Mrs are used to calculate the elastic modulus Value then which equation will be used to calculate the effective CBR value after getting the surface delfection ?!
Remember CBR is not used in the design, it is Mr value that is given as input to IITPAVE.
After getting the surface deflection, find out the Mr value and this is the effective Mr of the subgrade soil. If you want to find out the effective CBR then use this Mr value to back calculate CBR. I hope it is clear now.
i lovb you sir
Thanks dear. Please share the link with others also.
Respected Sir
Myself Amit Chowdhury from West bengal, My question is the CBR for soil we considered here is 4 days soaked CBR or this is field CBR of soil for both subgrade & Borrow soil ?
CBR of borrow material and CBR of subgrade soil are determined in laboratory after 4 days of soaking and then we estimate the effective CBR of Subgrade soil for design.
Sir
Thanks a lot for clearing my confusion. I have one request sir
if you kindly put some light on design of pavement by
considering CTSB ,Granular base/
CTSB ,CTB / Long life pavement
So that we can enriched
Regards
Amit Chowdhury
Sir how the poissons ratio shall be selected for the overlay design? How much it should be for the bitumineous layer in case of new over lay and old layer at the same time.
Poisson ratio does not make much difference in final output. Therefore, it is take same for old and new layer.
at 32:05, how did we calculate the E value for HMA Layer?
E value is taken from the Table given in IRC 37. For a combination of DBM and BC with VG-40 at temperature 35 C, it is 3000 MPa. Look at slide 27
@@SatishIITR yes sir.. I got it.. thank u.. now i am confused with calculations on rutting and fatigue calculations.. when I put 11.5 and 3 to calculate M, I don’t get the same equation
Mee too
DESIGN TRAFFIC GRANULAR LAYER OR BITUMINOUS ? WHICH ONE IS LESS THAN 2 MSA FOR 72-2015 TO FOLLOWED........PLZ ANSWER
question is not clear. Video for rural roads with traffic less than 2 msa will be published soon.
@@SatishIITR when bituminous layer (5years)-0.75 msa and Granular Layer-(15years) -2.92msa
IRC 37-2018 recommend more than 2.0msa design Traffic
Here Granular layer Traffic more than 2.0msa but bituminous layer below 2.0msa .
Isi condition me IRC 32-2018 design karsakta hai.... Sp-72-2015 leke design karenge
Sir how to download IITPAVE? Can you share the link..
Try this link
towerload.amebaownd.com/posts/19451924/
Sir, In case of Service Road and Slip Road of National Highway, what reliability % should be considered, 80% or 90% ?
depends on what standards are being followed. If this road is being designed as NH then take 90%, otherwise 80%
@@SatishIITR
Sir, Can it be concluded that if Service Road with 10 MSA traffic is a part of National Highway, then it should be designed with 90% reliability?
@@sourabhladhi9978 I think so.
Dear sir what the the minimum volume of binder as per coral provision
There is not codal value for minimum volume of binder. But VFB will certainly depend on Vb and that should be within permissible limits depending upon the type of layer.
Sir why u haven't use the kgp back software (Mentioned in IRC 115) for backcalculation??
KGPBACK software is to calculate the modulus values of individual layers from defection data. IRC 115 is for the design of Overlay on existing pavements while IRC 37 is for deign of new pavements.
I have uploaded another video on Overlay design using FWD as per IRC 115
@@SatishIITR I will see that also
Sir ! Since long period I have one doubt i.e why always the thickness of subgrade is kept as 500mm both in state highways and in national highways ? Please clear my doubt sir 🙏. 🙏🙏🙏🙏🙏
It is assumed that the pressure bulb in the subgrade will be formed up to 500 mm only.
@@SatishIITR sir is this assumption is justified ?
Hello sir I need pavement overlaying thickness design, so how to design it plz tell me.
watch my video uploaded on Oct 03, 2021. It gives complete procedure including use of software to design the overlay
ruclips.net/video/yMdp9H57FWo/видео.html
Where can I get iit pave software plz help
It comes with IRC code.
Sir can we increase bitument content to 12.5 or 13% keeping 3% target voids so that C value is increased and so the allowable tensile strain. This can be reassured during mix design by marshall test
Bitumen content 12.5 % ? Are you joking? The pavement will fail in rutting and bleeding. I hope you meant volume of bitumen and not the bitumen content.
@@SatishIITR yes volume of bitumen
Yes i was refering to volume of bitumen
@@milindjamble7987 Yes, can be done, but care must be taken to meet the parameters in the field otherwise fatigue life will be overestimated.
Noted. Thank you
Sir, where can we get the PPT's of your classes?
I have never used PPT in my regular class. I use chalk and blackboard, even now. An old man!!!
sir, can you please provide the iitpave software download link
It comes with IRC code, I can send you the folder by email
Hindi medium diploma hi sr technical word ke alwa others word Hindi my
Ok, will try
Where and how to download IIT pave software sir.
IITPAVE comes with the IRC code. If you want I can send a zipped folder to you through email.
Dear sir please provide PDF file of this video
PDF of video???
SIR CAN YOU PLS SEND ME THE ZIP FILE OF IIT PAVE
Yes, I can. send me an email request.
Sir kuch word Hindi my v boliye
OK
Thank you sir
Welcome, tell your friends and colleagues also.