Part 2:Stability Analysis of Retaining Wall

[@rahmanrahmani2896]

Toe is at the front of the wall and heel is the back of the wall where you have the soil and you have got them the wrong way around. What have happened to F.O.S against overturning & sliding? Think of you foot: Toe is at the front & heel is at the back. The same principle apply to retaining walls. Thank you!

[@CuriousCivilEngineer]

yeah you are right realized that later and corrected my mistake in next video. Thanks for pointing out though. I appreciate it.

[@demetriouhm]

Thank you very much. Can you check again x2 (at 9:04)? I think it must be 2.6+0.5+(0.7-0.5)/3 = 3.16 m

[@dahalbuddha]

Thank you for your effort ❤️🙏 it's really very helpful

[@saipriyap5615]

Does river water exert passive pressure on retaining wall constructed along the banks of river

[@CuriousCivilEngineer]

Yes. All surcharges, which are acting vertically downwards, create passive pressure. The value of this pressure is equal to Kp X Gamma w X height of water

[@saipriyap5615]

@@CuriousCivilEngineer Thanks for the reply.Is this pressure used for calculating FOS of overturning and sliding.

[@CuriousCivilEngineer]

No. Usually we do not include passive pressure for calculation of FoS. Because that increases the FoS. Sometimes if Passive pressure is too large then it in included but that's very rare case. In most cases passive pressure is excluded from calculation of FoS.

[@usherworlason5090]

Please what are the stability analysis methods for deep excavation?

[@undhinesh]

hi, video is very useful i have doubt that is soil fill slope is ard 60 deg, then soil friction is 30 deg. how to calculate Ka vaule...? plz guide thanks cos 60=0.5, then cos 30=0.87.. plz guide me

[@CuriousCivilEngineer]

Ka =1-sin(30) / 1+sin(30) = 0.33

[@undhinesh]

@@CuriousCivilEngineer above formula for flat soil level for retaining strucuture, what abt if the soil fill is above retaining structure with slope of ard 60deg.. thanks in advance

[@CuriousCivilEngineer]

@@undhinesh Oh Okay. Please refer these formula by Coulomb's theory: civilengineeringbible.com/subtopics.php?i=8

[@kb-iw3xh]

Some people calculate moment about toe some about heel. Can someone explain where the hell moment shall be calculated?

[@CuriousCivilEngineer]

When u want to determine safety against overturning, moment is calculated about toe. That's right approach. Moment about heel can be calculated to locate the resultant of all forces but it's not necessary to do so.

[@isarapoornapathirana5359]

Part 3 of this session ????

[@CuriousCivilEngineer]

kzbin.info/www/bejne/npq2d4J9h52Hoc0 This is part 3

[@fuzailahmed8388]

The value of pa is 158.19 kn/m

[@CuriousCivilEngineer]

Oh okay..I was calculating on mobile. Maybe made mistakes. Please use corrected values.

[@naraharimanne5240]

Sir your explanation is we'll, If you dont mine Soil is on heel side,earth side is always inclined

[@CuriousCivilEngineer]

Thank you. can you please explain what you're saying I didn't understand. Appreciate your time.

[@Nida_D]

thanks but you wrongly placed the toe and heel of the retaining wall which is simply you reverse them. hopefully you will correct them and thanks again

[@CuriousCivilEngineer]

Haha thanks I noticed it after uploading the video. Sadly I can't change it anymore.

[@naraharimanne5240]

Sir your explanation is we'll, If you dont mine Soil is on heel side,earth side is always inclined