Structural Evaluation of Concrete Pavements using Falling Weight Deflectometer (FWD), IRC 117, 2014

This video explains the procedure as given in IRC 117, 2014 for structural Evaluation of rigid pavements using FWD. Three parameters are evaluation, strength of concrete, Load Transfer efficiency of joints and voids below concrete slab.
Important to watch design of Rigid pavements to understand the method of calculating residual life of the concrete pavement. Here are the links.
Design of Rigid Pavement IRC method: • #highways, #pavements,...
Design of Rigid Pavements (in Hindi): • #rigidpavement Design ...

[@leenabadgujar5870]

Thank you so much sir for this video. Not even a single video available on TH-cam regarding 117.

[@SatishIITR]

So nice of you. Keep watching

[@sovandevchatterjee5013]

Thank you Sir for the informative video.

[@SatishIITR]

So nice of you, Glad that you liked it. Keep watching

[@TEG_IITR]

Thanks sir for explain FWD🙏

[@SatishIITR]

Always welcome

[@ANKITSHARMA-iq5zy]

Wonderful video...... Thank You Sir

[@SatishIITR]

So nice of you. Keep watching

[@milindjamble7987]

Nice video and explanation.

[@SatishIITR]

Thank you!

[@constructionpediajobopenin2097]

Very nice video sir

[@SatishIITR]

Thanks and welcome. Keep watching

[@adecmohamed8345]

hello, can you please share the excel sheet with us ?

[@SatishIITR]

This video was made when I was in CRRI with the help of one scientist and unfortunately, I do not have the excel files with me. Sorry.

[@KristianPolic]

Dear sir, thank you for the video! Can you tell me is there anywhere online excel sheet you are using? Thank you.

[@SatishIITR]

See if you can download it from here.
docs.google.com/spreadsheets/d/1TBnvX3-A5Y75Snl9iPx7MjCFsrxK79ZZ/edit?usp=drive_link&ouid=104340323223105810378&rtpof=true&sd=true

[@KristianPolic]

@@SatishIITR Thank you, but I will need access to document to download.

[@ujjvalsolanki3529]

Respected sir, Excellent explanation ..I am interested to learn why we do normalization of deflections after computing area and radius of relative stiffness. Modulus of elasticity of concrete is computed after normalization of deflection. How this normalization is carried out ?

[@leenabadgujar5870]

Given in IRC 115

[@SatishIITR]

Very tricky question to answer here. In fact IRC 117 has taken lot of material from AASHTO code given in the reference list. This code cosiders BISAR model to determine layer properties. The AASHTO code is not purely on PCC slab but several combinations of AC and PCC layer and therefore it normalises the deflection values to get it corresponding to layer thickness taken in field. I think you need to read this AASHTO code to get answer to your question.

[@vipinrai9833]

​@@SatishIITRdear Sir iam facing problem to get the Normalize deflection and AASHTO number

[@ankit7064]

Sir, please provide this excel sheet

[@SatishIITR]

OK

[@abhinayasaitejareddypalem7423]

Hi sir, can you please explain why we consider equation 10 instead of equation 11 for LTE analysis?

[@SatishIITR]

Equation 10 is used when deflections are measured on either side of the joint, and particularly when FWD is done on a new pavement. Eq 11 is when deflection sensors are 300 mm apart during the FWD tests. In our case, D1 and D2 were measured on either side of the joint, that is why I used Eq 10.

[@abhinayasaitejareddypalem7423]

@@SatishIITR thanks for your explanation sir

[@9750548125]

Can we adopt poisons ratio of soil as 0.35 instead of 0.45 ?? 15:25

[@SatishIITR]

There is very little effect of Poisson ratio in stress distribution.