10-6. GENERAL WELDING MAINTENANCE.
a. Weldment Points. Thoroughly inspect all weldments for cracks, chips or other damage. Areas include
the front and rear ISO locks, flatrack floor joints and wall, tiedown rings and the hookbar. Inspect welds for
cracks by doing ultra sound test or Zyglow inspection.
A-Frame Interface (1). This area includes the A-Frame channel to main rail interface, the top and
outboard wrapper plates, and the front wrapper plate and gussets. Solid welds in this area are necessary
to ensure safe loading and unloading of the flatrack.
Hookbar (2). These welds are located at the base of the hookbar casting on the A-Frame of the flatrack.
These welds secure the hookbar to the structure and are subjected to a significant portion of the total load
during loading and unloading operations.
Corner Fitting and Adjacent Structure (3). The corner fittings of the flatrack are used for transportation.
They may be used to secure the flatrack to a trailer, container or to another flatrack.