Design of Combined Footing | Property Restrictions I IOE, PU, PoU, IIT, MU
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- เผยแพร่เมื่อ 23 พ.ย. 2020
- In this video, I will show you how to design of combined footing considering equal projections as well as unequal projections due to property issues. This video should also help you to understand the gist of strap footing and slab beam combined footing.
Please watch the video till end as it helps our channel.
Thanks
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Why do you take point load divided by width to get udl? You can get udl from pressure distribution qu value, u can use that pressure distribution.
sir, can this method be used in cases where the columns are at corners and edge of the property?
Explain why transverse reinforcement along the width is provided in combined footing design.
very nice and detailed explanation......
Thanks.
c.v.Upadhye
Solapur
Detailed explanation is so much good.
Can you make a video on Trapezoidal combined footing? Pl.reply me sir
Will try
what if column A is flushed to the property line(having no projection)? can it be designed by same process you mentioned above? Please reply ASAP.
Yup. we can
How shear reinforcement, because of one way shear failure,is placed in combined footing along with longitudinal and transverse reinforcement.. please explain
Shear reinforcement in slab is avoided as possible as it can be. In case if it is to be provided then it is provided in form of chairs in slab
In one way shear failure, ie Tv》Tc, shear reinforcement is provided. My question is::: How can we provide stirrups in footing along with transverse and longitudinal bars?
do cal from oneway shear sothat no need to increace depth of footing . pass in both moment and punching
I have shown both approches. Its upto individual wish to proceed.
Brother can you make a video on trapezoidal footing also 🙏
Sure. Will try to upload
@@civilconst That will be your most kindness if you upload that video in this month
Hlw sir, please make a playlist on building design and analysis.. as a civil engineering student I am very interested on it..😢..❤
Already uploaded
Sir I have a problem in designing combined footing .I'm not getting negative moment may I know what is the reason
Check span between two columns and loadings.
your explanation is very good
Thanks
Very nice
Thanks
There are 2 isolated footing of size 2184 x 2184 & 1905 x 1905, & column distance is 3182. We constructed well but by mistake the well is 50cm inside the footing due to which the footing will be 50 cm shorter. Will the shifting of mesh is feasible?- it causes eccentricity. Wht we can we do for it. Another option i thought is making it combined footing. In this case wht would be the size & thickness of footing? Which option do u recommend. Please give me the solution.
Sorry for the delay in responding.
Because shortening by 50 cm is a significant dimension here, combined footing would be preferable.
How about provision of strap beam
How about making the footing eccentric and providing strap beam
@@sujanjoshi54 If the bearing is within the permissible range, you can go for it. Also one of the footing shall be concentric.
Please provide the notes of this question...in pdf form or any link.. ASAP
Please reply sir give that notes pdf
We can provide but you it's no longer free.
For more details DM me on instagram
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Dear youtubers
Please make videos on real life example, real life example always carries moments in both the direction and due to which there is maximum and minimum base pressure occurs due bending, make videos on this conditions, this is simple theory you are explaining as this condition never happens in real life
Thanks
Civil moments
Hey there. Kindly check reactions at column base. The moments developed are highly negligible considering axial forces so moment can be avoided. That’s why I have shown for axial force only. And for design we have considered rigid soil base so we can’t account moment for design as it will lead to flexible soil parameter.
Thanks
@@civilconst I have checked your video again, there is only vertical load acting on the base which is not possible ever if base is fixed condition, there is always be mx and my along with vertical loads, this is one thing. Now while calculating the base pressure your will add all the moments that is mx, my and moments due to eccentricity.
In this case formula of base pressure is (p/a +_ mx/z +_ mz/z)
Now the base pressure will not be uniform that will be trapezoidal load, means there will be pmax one side and pmin one side, doing that only further calculations are done.
Your efforts are thankful but my suggestion is as per real consideration, your example problem can only be found in book.
@@civilmoments5706 Thanks for your concern. If you are interested to find about biaxial moment footing design I have uploaded a video on it. You can find it over here.
th-cam.com/video/wczr5xRQsLA/w-d-xo.html
So don't say my videos content is limited or theoretical type only.
And talking about the fixity of column base I hope you have checked the values as well. I am not saying there won't be moment value. I said the values are negligible in comparison to axial loads. So we can omit moment value and consider axial load only for the design of footing unless it is a high-rise building.
If you are interested in understanding in more detail, you can see this video as well.
th-cam.com/video/ZggnINdWqaE/w-d-xo.html
Cheers
@@civilconst thanks sir! I have checked your biaxial moments calculations of footing, I have some questions but I don’t want discuss here in comment box.
@@civilconst and I must say your contents are appreciable, thanks for having words with me.
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