Spike's Calculators

Calculate the volume of a truncated hopper. It also calculates the valley angle of this hopper.

```
H/3A+B+√AB
where H is the height
A the area of the inlet side
B the outlet area
```

one cubic inch (in³) = 0.016387064 litres (L) one cubic inch (in³) = 0.000578703703703704 cubic feet (ft³)

inlet-A length = 24 inches inlet-B width = 9 inches outlet-a = 4 inches outlet-b = 4 inches height-H = 20 inches

First, calculate the area of the inlet and the outlet;

24 * 9 = 216

Inlet-A has an area of 216 square inches.

4 * 4 = 16

Outlet-B has an area of 16 square inches.

Plug the values into the formula;

```
20 ÷ 3 * ( 216 + 16 + √216 * 16)
6.666666666666667 * (216 + 16 + 58.78775)
6.666666666666667 * 290.78775 = 1938.585
```

This hopper has a volume of 1938.585 cubic inches.

- inlet length A
- inlet width B
- outlet length a
- outlet length b
- the height

- hopper volume in cubic inches
- in cubic feet
- in litres
- angle c located on side A
- angle d located on side B
- the valley angle

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- US Bushels Per Acre to Imperial Bushels Per Hectare
- US Bushels Per Hectare to Imperial Bushels Per Acre