T
(wave period)

H_m0
(Wave Height at the Toe of the Structure)

Bd
(Berm Depth Relative to Still water level)

Rc
(Freeboard - The height of the crest of the wall above still water level (m))

B
(berm width, measured horizontally (m))

αd
(Slope angle 1, before berm)

αu
(Slope angle 2, after berm)

γ
(coefficient for reduction factors)