Section 154.471 - Design criteria(a) The cargo tank support system must be designed:(1) For the loads in § 154.406(a) ;(2) To not exceed the allowable stress under this part at a static angle of heel of 30°;(3) To withstand a collision force equal to at least one-half the weight of the cargo tank and cargo from forward and one-quarter the weight of the cargo tank and cargo from aft; and(4) For the largest resulting acceleration in Figure 1, including rotational and translation effects.(b) The cargo tank support design loads in paragraph (a) of this section may be analyzed separately.