# 4.4.2 Diagonal Spacing Example

Diagonal or offset container spacing is frequently used in nurseries to get more containers into a given space. The procedure for calculating the Interception Efficiency is basically the same. The rectangle is now a parallelogram - a four-sided figure composed of straight lines, and having its opposite sides parallel and equal. To better visualize this, draw a parallelogram on paper. Make two horizontal parallel lines and cross these with two diagonal parallel lines.

At each of the four intersection points, draw a small circle using each intersection point as the center of a circle. Darken the bottom horizontal line connecting the two circles. Draw a perpendicular line from this darken line to the center of the circle above this line.

By extending the darkened line on the bottom to the right, a perpendicular line can be drawn to the remaining circle above it. Note that a rectangle has been formed by the addition of the two perpendicular lines and the triangles that were formed represent an area that can be moved to convert the parallelogram area into a rectangle.

The Diagonal Container Spacing diagram illustrates the areas and the shape conversion to a square or rectangle. Note that the width dimension is the perpendicular measurement between the two sides.

Measure the horizontal line (length) and the perpendicular line (width) to get the container spacing dimensions. For a field situation, measure the "width" from the center of a container to the imaginary line running center to center of containers on the "length". Continue as described in the previous section.