Reinforcing measures are constituted by tripping brackets,
located at the lower part and at midspan of side frames (see figure 4). Tripping brackets
may be located at every two frames, but lower and midspan brackets
shall be fitted in line between alternate pairs of frames.
The thickness of the tripping brackets shall be not less than
the as-built thickness of the side frame webs to which they are connected.
Double continuous welding shall be adopted for the connections
of tripping brackets to the side shell frames and shell plating.