Pad Footing Design - Part 1

[@TheSameer37]

Good to introduce the basics!

[@bengthebrazilianengineerinAus]

Thanks for watching mate

[@aralox18]

Really good man. I've watched this and part 2 a bunch of times and I absorb a little more each time. Thanks for doing these videos. Recommendation: include screenshots of more tables from the standards docs (AS3600 for these footing videos). It would really help those of us without access to the standards, so we can try out other calculations. Thanks again, keep up the great work.

[@bengthebrazilianengineerinAus]

Thanks mate. Glad your getting some value out of these videos. Appreciate the recommendation. Will do for sure. Cheers

[@malapris1283]

I have been watching your videos and still watching them repeatedly. Structural Engineering courses are very tough in uni and I am very happy I subscribed to your channel. These videos are very informative and have kept on reminding me of my uni lessons and also exposed me to some new knowledges as well. Keep them coming brother! I wish you a blessed week!

[@bengthebrazilianengineerinAus]

Thanks my friend. Glad the videos are helping you at Uni. Appreciate your support. Cheers

[@lucasfortunato7833]

Ótimo vídeo meu irmão!!!

[@sx2000]

Thank you. I subscribed. More Vid's please!

[@bengthebrazilianengineerinAus]

Thanks for the sub!

[@legoboy1357911]

It really helped me understand what I have read in books. You explained it really well! Will you also be doing something with the other stability checks? Like overturning and sliding?

[@bengthebrazilianengineerinAus]

I may be doing these checks when designing a retaining wall in the future

[@mohammedwaseem3739]

I wanna work for you. Or as an intern. Really appreciate the work you are doing. Helping young engineers.

[@bengthebrazilianengineerinAus]

Hi Mohammed, maybe one day when I build my own business :) Thanks for the support

[@engineerahmed7248]

At 5:50 where did u lookup to get critical section location

[@gnidnoeled786]

Footing size / area is calculated based on service loads (unfactored), innit? So, in order to find out if allowable soil pressure is satisfied, is it, allowable soil bearing capacity be greater than the sum of (soil net pressure due to column load) + (unit weight of soil above footing X height) + (unit weight of concrete footing X thickness of footing)?

[@bengthebrazilianengineerinAus]

Geotech engineer will give you an allowable bearing capacity of soil. This capcity has to be greater than the applied pressure. Yes self weight should be accounted for.

[@gnidnoeled786]

@@bengthebrazilianengineerinAus Thanks for the reply. Your videos are not only interesting but worth-watching as well. Hope you continue making contents to share your expertise.

[@aymanraouf1820]

i noticed in certain grounds they use isolated pad footings, and in other grounds they just do a slab on grade. Why does this occur? For the first scenario, it consists of a concrete masonry unit large house. Do you have any reading recommendations on books about this?

[@bengthebrazilianengineerinAus]

If it consists of continuous load bearing walls, you won't use pad footings. Pad footings are good for isolated point loads, but they are more susceptible to settlement or differential movements. I would choose the footings based on loads and type of soil. I think you're referring to a mat foundation, which is sort of a slab on ground and it is useful when the soil is weak. Imagine it as a large pad footing supporting the whole building. There are lots of resources out there. Where are you based?

[@khalifaalnaamany9330]

Hello I am not a civil engineer , I m trying to build a car garage with a swimming pool on top of the garage , the garage is 10m x 6m garage with a swimming pool of 8m x 5m and 1.5m depth with six footing and pillars, what size of footing should I use to be on the safe size, thank you

[@bengthebrazilianengineerinAus]

Don't build that without a professional structural engineer advice. There's much more involved. You have to know the soil properties etc

[@gnidnoeled786]

Is column selfweight shall be added to N dead load then multiplied by 1.2?

[@bengthebrazilianengineerinAus]

You should always include the self-weight of the structure. For ULS you multiply by 1.2

[@aymanraouf1820]

Excellent video! When is the second video getting posted??

[@bengthebrazilianengineerinAus]

I don't have a specific date yet sorry. Been really busy at work recently.

[@aymanraouf1820]

​@@bengthebrazilianengineerinAus Excellent work nevertheless. I ve worked on field and believe me its not easy to find design being explained so clearly like this. I appreciate all the work you are doing.

[@bengthebrazilianengineerinAus]

@@aymanraouf1820 Thanks for the compliment. Appreciate your support

[@titusshilongo7710]

Hi Man,I am subscribed and your content is gold,Please keep making more videos becuase your content is quite unique,Is there anyway to reach out to you?

[@bengthebrazilianengineerinAus]

Thanks Titus. Appreciate the support. My email is [e-mail] I answer on instagram and linkedin as well

[@jamesy9568]

Hi, could you let me know how to find the Ast formula. I have checked AS3600 but cannot find it. And how to use this formula? Cheers

[@bengthebrazilianengineerinAus]

Hi James.. I got this formula from the book Reinforced Concrete the Designers Handbook. If you google you will find it as well. It's just an approximation of the Ast you would get by going through the whole process of beam design.

[@paulmwangi5061]

Sir talk sth a bout raft footing,thanks

[@gnidnoeled786]

Are footings never will be doubly reinforced? If yes, why?

[@bengthebrazilianengineerinAus]

They can have top and bottom reinforcement depending on the actions imposed. A good example of one would be a strap footing. I have a video on Offset columns/Eccentric footings that showcase that.

[@gnidnoeled786]

@@bengthebrazilianengineerinAus Many thanks, mate.

[@frederiktoldevarjrgensen6730]

Hi. Should the Z not be Z= Bt^2/6 where t is the depth of the footing?

[@bengthebrazilianengineerinAus]

Hi Frederik, Look at the bending moment direction. Now imagine a vertical beam going into the soil. The length of that beam is the depth "t". And the sides B and L are the dimensions to find Z. I'll probably have to get chatgpt to refine this answer haha but if you didn't get it, have a look at some books and compare to my video. Let me know how you go

[@frederiktoldevarjrgensen6730]

@@bengthebrazilianengineerinAus Thank you! it makes sense to me now 👍

[@bengthebrazilianengineerinAus]

@@frederiktoldevarjrgensen6730 happy to help

[@nematquadri8881]

I'm 1000th subscriber

[@bengthebrazilianengineerinAus]

yeahh haha Thanks Sahil

[@wheres_bears1378]

Wow how do you remember all this stuff?

[@bengthebrazilianengineerinAus]

You dont have to know everything. You just need to know where to find it

[@wheres_bears1378]

@@bengthebrazilianengineerinAus is it hard to find a mature age traineeship for structural engineering in Australia?

[@bengthebrazilianengineerinAus]

@@wheres_bears1378 if I say it's hard, will you get discouraged? The harder the better my friend.

[@shixiao6786]

bro what is the software in your background monitor？

[@bengthebrazilianengineerinAus]

That's just a power point image. :D

[@tapassantra6425]

Sir g+1 Floor footing concrete ratio

[@bengthebrazilianengineerinAus]

What's your question?

[@16jaaroudmeisje19]

Hallo