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Civil Engineering/volume - formula for trapezoidal footing

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Bhushan wrote at 2011-03-20 18:37:16
Right formula is = V = [L X B X d] + h / 3 [ A1 + A2 + ROUTE UNDER A1 A2 ] where , l = length , b = breadth , d = bottom depth , h = D - d , A1 = bottom area , A2= top area (ii) is = V = [L X B X d] + h/6(A1 + A2 + 4 Am) where , h = D - d , A1 = bottom area , A2= top area, Am = Mean of Top and Bottom Area  


amar wrote at 2011-07-21 09:36:30
Right formula is = V = [L X B X d] + h / 3 [ A1 + A2 + ROUTE UNDER A1 A2 ] where , l = length , b = breadth , d = bottom depth , h = D - d , A1 = bottom area , A2= top area (ii) is = V = [L X B X d] + h/6(A1 + A2 + 4 Am) where , h = D - d , A1 = bottom area , A2= top area, Am = Mean of Top and Bottom Area  


kamal wrote at 2011-08-31 08:56:25
Right formula is = V = [L X B X d] + h / 3 [ A1 + A2 + ROUTE UNDER A1 A2 ] where , l = length , b = breadth , d = bottom depth , h = D - d , A1 = bottom area , A2= top area (ii) is = V = [L X B X d] + h/6(A1 + A2 + 4 Am) where , h = D - d , A1 = bottom area , A2= top area, Am = Mean of Top and Bottom Area



Read more: http://wiki.answers.com/Q/Trapezoidal_footing_volume_formula#ixzz1Waw9cNx3




Anand Jadhav wrote at 2012-04-19 09:01:01
Well for to calculate the volume of trapezoidal footing.

V= L*B*d + h/3(A1+A2+Sq.rt of A1A2)

h=D-d, A1=Bottom Area, A2=Top Area of footing,

d=Bottom Depth, D=Total Depth.



Hope this satisfies your query.


Murli meena kartik wrote at 2013-02-02 03:09:48
Volum formula is:-

v= (l*b*d)+h/3(A1+A2+ROUTH UNDER A1A2)where are,

l= length

b=beadth

d=bottom depth

A2=top area


Sunil wrote at 2014-11-22 12:42:48
kamal wrote at 2011-08-31 08:56:25

Right formula is = V = [L X B X d] + h / 3 [ A1 +

A2 + ROUTE UNDER A1 A2 ] where , l = length , b

= breadth , d = bottom depth , h = D - d , A1 =

bottom area , A2= top area (ii) is = V = [L X B X d]

+ h/6(A1 + A2 + 4 Am) where , h = D - d , A1 =

bottom area , A2= top area, Am = Mean of Top and

Bottom Area


Sunil wrote at 2014-11-22 12:42:59
kamal wrote at 2011-08-31 08:56:25

Right formula is = V = [L X B X d] + h / 3 [ A1 +

A2 + ROUTE UNDER A1 A2 ] where , l = length , b

= breadth , d = bottom depth , h = D - d , A1 =

bottom area , A2= top area (ii) is = V = [L X B X d]

+ h/6(A1 + A2 + 4 Am) where , h = D - d , A1 =

bottom area , A2= top area, Am = Mean of Top and

Bottom Area


Er Nitin wrote at 2015-06-29 11:16:34
I dont know why guys add V= LxBxH..... becoz this is a rectangle formula and by this addition yout trapezoidal footing volume just double and wrong actually just formula is Trapezoidal footing Volume(V)= h/3(A1+A2+underroot of A1xA2) where h is perpendicular depth and A1 & A2 are top & bottom Areas of Footing.


Er. Udas Man wrote at 2015-08-19 06:50:41
The right answer is : Trapezoidal footing Volume(V)= h/3(A1+A2+sqrt(A1xA2)) where h is height of footing and A1 & A2 are top & bottom Areas of Footing.  


Prash wrote at 2016-05-14 05:30:39
You all wrote correct answer but what if the footing is not symmetrical, one side is greater than the other




Sivaganesh M wrote at 2016-07-11 02:40:42
V= h/3((AB^2 - ab^2)/(B-b))

&

V= h/3 ((A^2*B - a^2*b)/(A-a))


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.Fellow of Institution of Structural Engineers (UK) .Fellow of Institution of Civil Engineers(UK) .Member of the Institution of Engineers, Kenya .Registered Engineer, ERB, Kenya .Member of the Architectural Association of Kenya (Engineers Chapter) .Chartered Engineer (UK)

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•1984: International Conference on the Art and Practice of Structural Design, London •1994: 3rd Int. Kerensky Conference in Structural Engineering, Singapore •2008: International Conference on High-Rise Towers, Abu Dhabi •2013: IEK International Conference, Kisumu, Kenya

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BSc, 1st Class Hons, in Building Engineering, University of Bath, UK MSc in Concrete Structures and Technology, University of London. Diploma of Imperial College, UK.

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•Science Congress Special Award (for 2-seater Hovercraft - 1968) •Institution of Civil Engineers Award for outstanding performance at Bath University (1975) •Concrete Society Postgraduate study Bursary Award (1976) •Consular Representative for British High Commission, Nairobi. (1995 to 1998) •Examiner for Institution of Civil Engineers Professional Interviews, Nairobi. (1997 to 1998) •Branch Representative in Vienna for PI assessment for Inst. of Struct. Engrs. (1999 to 2010)

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