If you have: | Then: | |
"Hold-down" devices | 1. | Anchor the container to the cradle, frame, or chassis so there is no area of unnecessary stress. |
2. | Lock the container down tightly. | |
3. | Provide stops or anchors to minimize movement between the container and the framing. | |
Note: Movement could be the result of stopping, starting or changing direction. | ||
Vehicles with cargo tanks designed with stress members instead of a frame | 1. | Support the tank with external cradles suspended at least 120° of the shell circumference. |
2. | The design calculation needs to include all of the following stressors: | |
a. | Beam; | |
b. | Shear; | |
c. | Torsion; | |
d. | Bending moment; | |
e. | Acceleration; | |
f. | Any other stresses covered by the code of the cargo tank design. | |
A liquid withdrawal line installed in the bottom of a container | Make sure the connections to the container, including the hose, are not lower than the lowest horizontal edge of the trailer axle. | |
A cradle and container that are not welded together | Use suitable material between them to eliminate metal-to-metal friction. |