TM 55-2350-224-14Table 3–2. ContinuedItemQuantityDescriptionCome-along or1Adequate strength cable tensioning device.cable tightenerBlocking MaterialsLumber (nominal sizes)Douglas fir, or comparable2- x 4-in.40 linear ftSpecification MM-L-75.2- x 6-in.12 linear ft2- x 8-in.12 linear ft2- x 12-in.12 linear ftstraight grain, free from material defects, FederalNailsCommon, steel, flathead; bright or cement-coated, type II, style 10, Federal12d120Specification FF-N-105.30d8040d10Option 1: 1 chain,1 loadbinderFigure 3–1. Detail of rail chain tiedown patterns.b. Loading. Place the carriers in the tiedownposition on the railcar, using a crane of adequatecapacity (see para 4–5 for lifting guidance), ordrive the carriers onto the railcar if a suitableramp is available. Position the carrier so thatsufficient railcar tiedown points are available.Carriers must face in the same direction, with aminimum space of 10 inches between them and 6inches between the brake wheel and the front ofOption 2: 2 chains,1 loadbinder(Table 3-2, chain assembly, option 1 and 2)the carrier. Do not set handbrakes on the carriers.Place gearshift levers in neutral. Total load re-straint (para 1–4) is three times the carrier GVWper AAR, Section 1, General Rules Governing theLoading of Commodities On Open Top Cars.c. Tiedowns and Blocking. Figures 3–2, 3–3, and3–4 and table 3–3 provide instructions for restrain-ing the carriers against forces encountered innormal rail operations.3-3
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