Bar Bending Schedule for footings / Estimation of Steel reinforcement in footings:-

Bar Bending schedule plays a vital role in the construction of High rise buildings. It is very important to learn Bar Bending Schedule for finding out the quantities of Steel reinforcement required for every component of the building.

For Suppose, consider the case of high rise buildings, It requires tons of steel to complete 10+ floor building. It’s impossible to order all the steel required for whole construction at a time it creates a problem of space and also steel is prone to corrosion by the contact of water (rain). To avoid this, high rise building orders reinforcement (steel) as per requirement. Firstly they find the Estimation of Steel reinforcement in footings (steel quantities) [Bar Bending Schedule for footings], required for the construction of footings. After the completion of footings they go for next order and so on.

Contents

- Quantity of Reinforcement (Steel) required for footings / Bar Bending Schedule for footings:-
- Footings F1, F4, F7:- (Plain Footings) or Bar Bending Schedule for Plain footings:-
- Footings F3, F8 (Isolated footings) or Bar Bending Schedule for Isolated footings :-
- Footings F2 (Step footings) or Bar Bending Sschedule for Stepped footings:-
- Footing F5 (Eccentric footing) or Bar Bending Schedule of Eccentric/Shoe footings :-

**Quantity of Reinforcement (Steel) required for footings / Bar Bending Schedule for footings:-**

In this post, I am finding out the Estimation of Steel reinforcement in footings / Bar Bending Schedule for footings. For this, I considered a footing plan as below.

Steps for Finding the quantities of Reinforcement in footing:

Step 1: Identify the type of Mesh or Reinforcement

Step 2: Adopt dia of bars (X bars & Y bars)

Step 3: Deduct the Concrete Cover from all sides of footings

Step 4: Find the length of bars (X bars & Y bars)

Step 5: Find the No. of Bars

Step 6: Find the total length of bars

Step 7: Result: total wt of bars required for footing

**Footing Details:- **

F1, F4, F7 is Plain footing (1.5×1.5×0.8)

F2 is Stepped Footing (0.9×0.9×1.35)

F3, F8 is Isolated footing (0.9×0.9×0.5)

F5 is Combined Isolated footing (4.4×1.9×0.9)

(In this article I didnt added the details of above footing F5)

F6 is Shoe footing similar to Plain footing (1.5×1.5×0.8)

We use different types of mesh (reinforcement) in footings as per design. You can refer different types of Reinforcement used in footings from here.

**Footings F1, F4, F7:- (Plain Footings) or Bar Bending Schedule for Plain footings:-**

Plain mesh is adopted for F1, F4, F7 footings

*Remember, Proper Concrete cover should be adopted for the reinforcement in Footings to resist it from corrosion.

The dimensions of Footing F1 are 1.0 x 1.0 x 0.9 (Length x Breadth x Depth)

**Adopt Dia 16mm @ 100mm C/C in X Bars**

**Adopt Dia 12mm @ 100mm C/C in Y bars**

Finding the length of X bars and Y bars (X bars are Horizontal bars and Y bars are Vertical Bars)

To find out the length of bars we have to deduct the cover from footing (Refer Fig.1)

As per the condition the concrete cover for the mesh is 0.1 from all the sides of footing

So, The length of X bar is 0.8 and Length of Y bar is 0.8. (Deduct 0.1 from both sides)

**Footings F3, F8 (Isolated footings) or Bar Bending Schedule for Isolated footings :- **

Hook Mesh is used in Isolated footings

Remember Proper Concrete cover should be adopted for the reinforcement in Footings to resist it from corrosion.

The dimensions of Footing F3, F8 are 0.9 x 0.9 x 0.5 (Length x Breadth x Depth)

**Adopt Dia 16mm @ 100mm C/C in X Bars**

**Adopt Dia 12mm @ 90mm C/C in Y bars**

Finding the length of X bars and Y bars (X bars are Horizontal bars and Y bars are Vertical Bars)

As per the condition the concrete cover for the mesh is 0.1 from all the sides of footing

So. The length of X bar is 0.7 and Length of Y bar is 0.7. (Deduct 0.1 from both sides)

Remember , **Hook length = 9D **

**Length of Bars: –**

Length of X bar = L+9D+9D = L+18D = 0.7+18 x 0.016 = 0.988m

Length of Y bar = L+9D+9D = L+18D = 0.7 + 18 x 0.012 = 0.916m

**Footings F2 (Step footings) or Bar Bending Sschedule for Stepped footings:- **

Hook Mesh is used in Step footing.

The dimensions of Footing F2 are (0.9×0.9×1.35)

**Adopt Dia 16mm @ 110mm C/C in X Bars**

**Adopt Dia 20mm @ 115mm C/C in Y bars**

Finding the length of X bars and Y bars (X bars are Horizontal bars and Y bars are Vertical Bars)

As per the condition the concrete cover for the mesh is 0.1 from all the sides of footing

So. The length of X bar is 0.7 and Length of Y bar is 0.7. (Deduct 0.1 from both sides)

Remember , **Hook length = 9D**

Length of X bar = L+9D+9D = L+18D = 0.7+18 x 0.016 = 0.988m

Length of Y bar = L+9D+9D = L+18D = 0.7 + 18 x 0.012 = 0.916m

**Footing F5 (Eccentric footing) or Bar Bending Schedule of Eccentric/Shoe footings :-**

Type of Mesh :- Upto the depth of footing

The dimensions of Footing F5 are (0.6×0.6×0.4)

**Adopt Dia 16mm @80mm X Bars**

**Adopt Dia 16mm @ 80mm in Y bars**

Finding the length of X bars and Y bars (X bars are Horizontal bars and Y bars are Vertical Bars)

As per the condition the concrete cover for the mesh is 0.1 from all the sides of footing

So. The length of X bar is 0.4 and Length of Y bar is 0.4 (Deduct 0.1 from both sides)

Length of X bar = 0.3+0.4+0.3 = 1.0m

Length of Y bar = 0.3+0.4+0.3 = 1.0m

Total Steel Required for Footings = 89.13 + 67.32 = 157Kgs.=** 0.157ton**

Coming soon estimation steel reinforcement in Columns, Slabs, Septic tank, Water tank. Stay tuned by like’ing us on Facebook

**You can also read:-**

**10 Types of footings or foundations which we adopt in Construction**

**16 Different types of slabs in construction **

**Different types of Columns in construction**

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Well done bro keep going

Thanks for ur inputs

Good job brother, It’s really super

Good job Krishna ji it’s very helpful

well done..you made my day…Thanks..hoping to see upcoming detail estimation of slab and beam reinforcement

dimension of footing is 1.5×1.5×0.9, but used 1 instead of 1.5,can you pls explain…anyway I appreciate your work.

Excellent….

Excellent infformation. Thanks a lots

Excellent information a lot of tnx,I learn a lot of knowledge

Very nice contribution to civil construction.

Thanks For Wonderfull Information , keep giving Ideas of Footing and About Pile foundation Details , Can help a lot, Ravichandran p

I heartily Thanks for your sir for very good information

thanks for ur words! Join our dedicated civil engineers forum let help each other

link: forum.civilread.com

I lyk dis site.. Add more

thank you dear for your all information’s stay blessed

Hiii actually I want to know that which size of steel bar is used for footing purpose for g+4

it depends on design usually we use 10mm-12mm

Hi Krishna, u’re doing a great job here, keep it up. Please I will like to know the design code or a textbook to consult to get info such as the hook length for footing(9D), weight of 1m steel(D2/162) to reinforced my conviction about what I read here. Thanks

Good job ji it’s very helpful

i dnt know english pls send in telugu

use google translate 🙂

Thanks for informing

How to process calculation bar quantity any pile or mat foundation.

go through the article clearly

plane footing cutting length and depth ofstepped footing is wrong pls try to correct it

All values mentioned are for understanding the concept and these values cant be used for design purpose.

very Nice Information Thanks Buddy

why r u taking +1 in no of bars in x and y calculation

its a formula

There is have any deductions in a calculation of cutting length for rebars in any structural units like slabs ,beams columns and footings …if there is any deductions please explain .

the deductions and the complete design of slabs, beams , columns are explained clearly here

https://civilread.com/tag/bar-bending-schedule

can u plz add combined footing

plese vartical ka steel cutting length bhi explane kro

i’m looking for combined isolated footing. Where is it ?

soon u can see it in site

nice very helpful but you miss footing with top mesh and bottom mesh. i want a bbs of water tank please upload it .and isolated footing too. thanks for sharing for free

Good job brother, ur thinking of sharing ur subject really super

generally which diameter of steel used in slab column footing beam?

it depends for residential 12-16mm bars

I want estimation calculation for trapezoidal footing for residential building (g+1)