Packaged lumber on traditional bulkhead flats, not secured to the car by banding, cable, chains, or web straps, must comply with the loading procedures below. Figures affected are in AAR Open Top Loading Rules Section 5, and include Figures 32, 58 to 67 inclusive, 70, 71, 110, 111, and 112.

• Car floors, bearing pieces, guide rails, and separators must be free from ice and snow when loads are prepared under these figures.
• Stub stakes extending 10 in. above car floor must be placed in first two stake pockets at each end of load and every other stub stake pocket between, on both sides of car, except when definitely known movement is in area where icing conditions will not occur.
• When weather conditions warrant, the originating carrier may require that stub stakes be applied prior to or beyond the dates specified for this figure. If voids between stub stakes and guide rails exceed 2 in., suitable filler must be applied.

Stub stakes, 4 in. × 4 in., may be used to provide sufficient width to accommodate full width of load and guide rails. These stub stakes will require a filler piece applied and nailed between the inside face of stub stake and side sill of car, extending from top of car deck to bottom of stake.

Stub stakes may be substituted with guide rail securement devices (GSD). For application, see General Rule 13.20, Section No. 1.