How to Find Depth of Foundation for House? - Minimum Depth of Foundation

bismillahi r-rahmanir-rahim assalamualaikum guys how to find depth of foundation yes of course it's very important for civil engineering students and also for civil engineers which are working on construction site how to find depth of foundation in this video guys I will give you guidelines with the help of Lincoln's formula this is the specific formula which I am telling you in this video how to find depth of foundation and many students they are telling me sir is there any specific formula by which we can find minimum depth of foundation yes of course there is specific formula if you don't have design and you want to find depth of foundation so you can find depth of foundation with the help of renkins formula minimum depth of foundation and guys if you don't have any structural design so in many videos I have already discussed the depth of foundation should not be less than 1 meter with the reference of is code in the incident at code but here I will give you informations for how to find depth of foundation with the help of Rankin's formula when you follow Harrington's formula then you are able to find the minimum depth of foundation so let's start guys and for more students it's important and in many interviews they can ask from you what is the depth of foundation what is the specific formula for depth of foundation minimum depth of foundation so it's important for you so therefore you must watch this video from start to end then you're able to learn something okay about foundation guys we will use the formula to find depth of foundation that is called Lincoln's formula Aron Kim's formula okay by which we can find what depth up our foundation minimum depth of foundation okay guys the formula is for depth of foundation that is minimum depth okay minimum depth of foundation with the help of Rincon formula minimum depth of foundation that is d is equal P divided by W into 1 minus sine theta divided by 1 plus sine theta this is formula and square or this is the specific formula to find depth of foundation as you can see what should be the depth of foundation as you can see this is depth so how we can find the depth of foundation with the help of Lincoln's formula now guys here is a Christian what is B okay so we're be okay D means depth of foundation okay and now P this one okay so P is structure load structure load on foundation are you can say building load this is building load P okay also I will tell you the units for P for structure load now guys here is W okay this is density of soil density of sy density of soil in which you are making foundation so density of this soil in which you are making house construction or in our house so this is the density of that soil in which you are making foundation right now guys here is the so one minus sine theta so sine theta sine as a sign so what is Theta okay so that is called guys angle of repose angle of repose are internal friction of soil internal friction of soil okay now as I will explain what is D so I have already discussed D is depth of foundation okay this is depth of foundation okay so we will find depth of foundation guys P is structural load on foundation our building load and foundation total load of building that is called P which unit is in kg per meter square because we have different types of load in building okay and that load comes on the foundation there is a dead load our self load okay our foundation our of materials and also live load okay earth quick load etcetera that is called structural load on foundation our building load which comes on the foundation which unit is kg per meter square okay the load should become on the foundation and kg per meter square now guys the second one is in other side that is w which is density of side is you know we have a different density of side for a different types of soil okay and density of the soil is also depend on the bearing capacity of the side okay and which unit is kg per meter cube okay density of the soil are a weight of soil same thing okay there is density of the soil is depend on the different types of soil in which you make foundation but we will keep the density of the soil in which you are making foundation not other types of soil so first of all we will find density of side okay maybe it is 2000 kg per meter cube R 25 r23 100 kg per meter cube okay because we have different types of soil okay glass I'll wet soil and gravel soil we have different types of soil so there four different types of soil has a different density so maybe there is to 2,000 kg per meter square are the two thousand or two thousand three hundred kg per meter square maybe 1500 or 1800 okay are 1800 between 1,800 to 2300 kg per meter cube so it's depend on the different types of soil in which you are making foundation and the other one is guys angle of repose what is angle of repose are internal friction of side guys you can see this is soil okay this is soil and you can see the soil become like this okay so when you can see this angle is called angle of repose this is called angle of repose this is soil okay this is soil when it make the angle here so this angle is called angle of repose and for a different size we have different angle of repose so but for normal we have what 24 25 to 30 angle okay and also some side anger of angle of repose is 15 to 20 okay 15 to 20 ml it's depend on the different side are you can check practically on the side angle of repose sed okay with the help of soil symbol okay nowadays these are the proof of this formula when you put all the videos and this for example the depth of foundation for example if the P is okay our structure notice for example if I say 1,500 okay kg parameters here okay so divided by what W which is for example I have 2,300 kg it is okay but I will not put the kg because this is calculation n into 1 minus sine theta and also 1 plus sine theta then you can find angle of repose so if that is 25 okay and also 1 plus sine 25 under root when you do calculation with the help of calculator you can find easily depth of foundation minimum depth of foundation but guys on the other side I will also give you information for foundation I have already discussed in many videos from is code minimum depth of foundation should not be less than 1000 mm are one meter but guys also depth of footing this is also from is code okay the depth of footing should be 1.5 times off its width times of its weight okay 1.5 times for example guys if we have the footing if the footing are if the depth is width is 1 meter if this is 1 meter so the depth should be 1.5 meter that's why because 1.5 times of its width the depth of foundation okay but there's also I will did you hear this is from practical experience for 6 story then six story building you can keep depth of foundation okay from 1.5 to 2 meters okay it should be the depth of foundation to 6 story you can keep okay if there is also commercial building so you can keep the depth of foundation to 2 meters okay so guys if you know about the specific formula so you should know about this formula and I have already explained in which you can put the values which can give you the minimum depth of foundation is it so that is if any Christian related with this topic how to find depth of foundation are lily related with this formula so you can convince I will try to replay your answer thanks for watching see you in next video you

Channel: Civil Engineers

Views: 289,949

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Id: vkxEDzHnW5g

Length: 14min 7sec (847 seconds)

Published: Tue Dec 24 2019