Abstract: A high-pressure structure having a circular cylindrical metal shell made of metal rings joined together by weldments and which have peripheral areas of reduced shell thickness at the weldments which permit a reduction in the amount of weld metal deposited while still maintaining sufficient circumferential or hoop stress strength.

Abstract: A railroad car capable of carrying stacked containers which form stacks of different lengths comprising a car body having opposing car ends supported by rail trucks adapted for movement over a railroad; the car body having opposing side walls and an end wall near each end connected to the side walls with the side walls and end walls defining a well in which a container can be received; supports for the bottom of a container, when in the well; with each side wall including a side top chord member; and walkway boards on top of each side top chord member along each end of the well and accessible from the adjoining car end.