The Volume and Surface Area of a Greenhouse (gabled roof) calculator computes the interior volume (V) and Surface Area (SA) of a greenhouse based on simple measurements.
INSTRUCTIONS: Choose units and enter the following:
Greenhouse Volume (V) and Surface Area (SA): The volume is returned in cubic feet, and the surface area in square feet However, these can be automatically converted to compatible units via the pull-down menu.
The interior volume of a greenhouse formula is:DIFFERENT GREENHOUSE SHAPES Gabled Roof Structure Arched Roofed StructureQuonset Hut Structure
`V = (0.5*W*H2 + H1*W)*L`
This is a simple computation using the lateral area of the green house defined by the rectangle of (H1*W) and triangle (.5 * W *H2) all times the (L) the length. The default input units are feet, and the calculator returns cubic feet. However, vCalc lets the user can choose one of many length and volume units for automatic conversion from the pull-down list for both the input length units and the output volume units. Note: The formula above is accurate whether the greenhouse has even gables (isosceles triangle) or uneven gables as in the second diagram. Both gable areas are triangles with a surface area of base times height. In the latter case, the base is the sum of the two widths (W = W1 + W2)
The surface area is the sum of the sides and roof. The formula for the surface area is:
`SA = 2*H1*W + H2*W + 2*L*H1 + sqrt((w/2)^2 + H_2^2) * L * 2`
The volume of a greenhouse is useful in many ways. It is most often needed for calculating the heating and moisture (humidity) needs of the greenhouse.
The Greenhouse Calculator provides useful equations and data for people who work with greenhouses and high-tunnels. This includes basics for greenhouse construction and heating, for mulching and coverage with straw and for greenhouse planters.