Buzzbox.
Thanks for that. I have a copy of the worlds airports (most of) and CGK/WIII strength data is prior to the downgrade.
Your info.
PCN is 114
R is Rigid
D is Ultra Low Strength Subgrade
W is No Tyre Pressure Limitation
T is Technical Evaluation
Based on the above a PCN of 131 is required for unlimited maximum weight take-offs of 352,441 kgs. A PCN of 114 suggests the max weight allowable for unlimited take-offs is 322,000 kgs. In practice a further 10% (32,200 kgs) can be added for a limited number of take-offs per day. These figures are all based on a technical evaluation. If the rigid pavement is under stress the weights would be reduced. Without knowing the full story I stick with my hypothesis.