5.4 Watertight bulkheads and integral tank bulkheads, design pressure
5.4.1 Watertight bulkheads
The design pressure Pbkd on watertight bulkheads is to be taken as:
Pbkd = 7,2・hb kN/m2 (16)
where hb load head in metres, measured vertically as follows:
Plating: The distance from a point one third of the height of the plate above its lower edge to the bulkhead deck at side.
Stiffeners: The distance from mid point of stiffener span to the bulkhead deck at side.