When using the 3-term equation, for fiberboard panels in segments with an aspect ratio greater than 1:1, to the maximum of 3.5, the program increases deflections by (h/b)1/2, as per SDPWS 4.3.2.3. This is not applied to deflections using the 4-term equation because this provision explicitly references Equation 4.3-1, the 3-term equation.