Commonly referred to as "cordwood," firewood is measured by the cord which is a standard unit measuring 128 cubic feet. By contrast, a "rick" of wood is a nonstandard unit, also known as a "face cord." As the rick is non-uniform, it cannot be precisely quantified; the only way to measure a rick of wood is to calculate it as part of a whole cord. Depending upon the lengths of the pieces of wood, a rick can equal up to half of a full cord.
Stack the cut firewood so it is in a standard cord configuration. This will create a pile of wood 4 feet high by 4 feet deep by 8 feet long.
Measure the length of a single piece of wood, assuming the wood is cut to uniform lengths. As by definition, a rick is a single row of wood, knowing the length of the pieces is the only way to obtain the measurement.
Multiply the length of the single piece of wood by the height and length of an entire cord to obtain the size of the rick. For example, if a single piece of wood is 12 inches in length, multiply 1-foot by 4 feet by 8 feet to equal 32 cubic feet of firewood (1 x 4 x 8 = 32). If each piece of wood measures 18 inches in length the rick would measure 48 cubic feet (1 1/2 x 4 x 8 = 48).