Example Calculation Calculate amount of paint required for length of 100 meters. Pipe Dia in mm (D) = 10″ X 25.4 = 254mm. Length of Pipe (L) = 100 meters = 100000 mm. Surface area of pipe for one meter (A) = Pi X D = 3.141 X 254 = 0.797814 Sq.

The surface area of a elbow is equal to one-fourth the area of an equivalent torus. See the figure below. The surface area of a torus is where is the major radius and is the minor radius. The surface area of a elbow is equal to one-fourth the area of an equivalent torus.

Pipe Elbow Center Calculation

1. Elbow length in mm = Tan(Elbow Angle/2) X Elbow Radius in mm.
2. Where:
3. Same procedure applies to 3D elbows.
4. Calculate elbow center to end dimension for 4 inch nominal pipe diameter elbow at 60 degree angle, cut from 90 degree LR elbow.
5. Length = Tan (60/2) X 152.
6. Length = 0.57735027 X 152.

Multiply the length and width together. Once both measurements are converted into metres, multiply them together to get the measurement of the area in square metres.

Assuming consistent circular cross-section, the surface area is the pipe circumference times the centerline length. If bent on curve of radius R, the centerline length is R x Bend angle (in radians).

The radius is 6 feet. Multiply the radius by itself to square the number (6 x 6 = 36). Multiply the result by pi (use the button on the calculator) or 3.14159 (36 x 3.14159 = 113.1). The result is the area of the circle in square feet–113.1 square feet.

Compute the square footage of a rectangular garden area by multiplying the length by the width. For example, the area of a 10-by-12-foot garden is 10 times 12 or 120 square feet.

The perimeter of a square is four times the length of one side….Perimeter = Side * 4.

Use of diameter tapes Diameter tapes are used to measure tree stems (trunk or bole); other parts of trees such as branches and roots; and logs (cut stems). Standard Diameter Height (SDH) is the height at which tree diameter is measured, and is normally called diameter at breast height (DBH).