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5.7.7. Place the assembly into the space between the ramp side rails. Make sure the legs of
the barrier attachment plates with the two smaller holes are captured under the
upper hooks and in contact with the ramp side rails. Move the ramps slightly if
needed. Level the barrier with respect to the platform and clamp the attachment
plates to the side rails if possible before drilling (FIG. 5.22).
5.7.8. Use the two smaller holes in the barrier attachment plates to drill two 1/4” or 9/32”
holes through each ramp side rail (FIG. 5.22).
5.7.9. Connect the barrier attachment plates to the ramp side rails using 1/4”-20 x 3/4”
long ribbed neck carriage bolts, 1/4”-20 nylon insert locknuts and 1/4” flat washers.
Orient the head of the carriage bolt on the ramp side as shown (FIG. 5.22).