you will need to create a shipping rule for each shipping amount. use the taxable total for the cart trigger to create rules base on your price breaks.
for example the first rule would be created as:
Triggers:
"Taxable total For the Cart"
if the taxable total price for the cart is ">" a value of "0"
AND
"Taxable total For the Cart"
if the taxable total price for the cart is "<=" a value of "50"
calculation:
falt rate Charge of "5"
the second rule would be created as:
Triggers:
"Taxable total For the Cart"
if the taxable total price for the cart is ">=" a value of "50.01"
AND
"Taxable total For the Cart"
if the taxable total price for the cart is "<=" a value of "100"
calculation:
falt rate Charge of "10"
the other rules would follow the similar pastern just changing the comparison values and the calculation amount.