What is the measurement reference for the upward deformation of the gooseneck bolster?

The measurement reference for the upward deformation of the gooseneck bolster is taken from the underside, undamaged area. This approach is essential because it provides a consistent and clear baseline for determining any deformation that has occurred. When measuring from this specific point, it ensures that any physical changes or damage to the gooseneck bolster can be accurately assessed without interference from other structural elements of the container. This method avoids potential inconsistencies that might arise if measurements were taken from areas affected by previous damage or structural changes. By measuring from an undamaged area, one can ensure that the evaluation of deformation is reliable, aiding in the accurate assessment of the container's structural integrity.