How do you calculate trapezoidal footing?

Trapezoidal Volume Calculation Formula

  1. V = H/3 (A1+A2+(√A1 x A2)
  2. A1 = Area of Lower Portion.
  3. A2 = Area of Upper Portion.
  4. H = Height of trapezoidal portion.

How do you calculate steel in a trapezoidal footing?

Details Obtained from the Drawing

  1. Length of Footing = X = 2m.
  2. Breadth of Footing = Y = 1.6m.
  3. Height of the footing (Thickness) = h =0.3m.
  4. Diameter of the Main reinforcement bars = dm= 12mm.
  5. Diameter of Distribution Reinforcement Bars = dd =12mm.
  6. Spacing of Main reinforcement bars = sm = 150mm c/c.

How do you calculate RCC of trapezoidal footing?

Example – Calculation Using Trapezoidal Footing Formula

  1. A1= A x B = 1.5 x 1.5 = 2.25m.
  2. A2 = a x b = 0.8 x 0.8m = . 64m.
  3. ht = 0.3m.

What is trapezoidal footing?

Trapezoidal footing is a type of footing that carries unequal loads from 2 columns when the heaviest load outside the column distance is limited. It is used when the area of footing is fixed and the soils at the site are loose soil.

How do you calculate footings?

  1. Determine the width and length of the cement slab in inches.
  2. Divide the width by 12 to convert it to feet.
  3. Divide the length by 12 to convert it to feet.
  4. Determine the depth or thickness that is required for the footing in inches.
  5. Multiply the width by the length and then by the depth.

What is volume of trapezium?

Formula for Volume of a Trapezoidal Prism. If the prism length is L,trapezoid base width B, trapezoid top width A, and trapezoid height H, then the volume of the prism is given by the four-variable formula: V(L, B, A, H) = LH(A + B)/2. In other words, multiply together the length, height, and average of A and B.

How do you calculate column footing size?

How do you calculate concrete footings?

Multiply the length by the width to determine square footage. Convert the thickness from inches to feet. Multiply the thickness in feet by the square footage to determine cubic feet.

Why is the formula for the area of a trapezoid?

Trapezoid Area Formula. According to the trapezoid area formula, the area of a trapezoid is equal to half the product of the height and the sum of the two bases. Area = ½ x (Sum of parallel sides) x (perpendicular distance between the parallel sides).

What is the base of a trapezoid?

parallel sides
The bases of a trapezoid are the parallel sides. The legs of a trapezoid are the nonparallel sides. The median of a trapezoid is the line segment joining the midpoints of the two legs.