Weight Based Manual Shipping

I can't seem to figure out how to configure my weight based shipping. My courrier charges the shipments by weight. The charges are like below:

  1. 1-10 kg : X USD
  2. 11-20 kg: Y USD
  3. 21-30kg: Z USD
    • 30kg: Z USD + 0.5 USD per kg

      Maybe I'm blind but I can't find a configuration item to handle the 4th option. I can define a rate like “if over 30kg 0.5 usd per kg” but how can I tell cs-cart to add 0.5/kg to fixed charge “Z USD” after 30kg total weight?

      Thanks in advance

i think you have to set up each one, so

more than, 30kg 10 usd

more than 31kg 10.5 usd

more than 32 kg 11 usd

etc John

Thanks John, actually that crossed my mind but thinking that this way I will have to add more than 200/250 dependency lines… I dont know how this will work