OAR 437-007-1050: Log Truck and Trailer Bunks and Stakes

(1) Every truck or trailer transporting logs loaded lengthwise must have bunks and bunk blocks, or stakes. (2) All stakes, stake extensions and bunks and their securing hardware must be designed and constructed to withstand their anticipated loads. (3) Defective stakes, stake extensions, bunks or means provided for securing or locking the stakes in hauling position must be removed from service. (4) Stakes or blocks that release must have the releasing mechanism at the opposite side of the bunk. (5) All swivel-type bunks must have locks or another method for keeping bunks perpendicular to the reach until the first full bunk tier of logs is loaded. (6) Bunk locks must be disengaged before starting to haul the load. (7) Bunk blocks must extend at least 8 inches above the top edge of the bunk. (8) Bunk blocks and stakes must not extend beyond the end of the bunk. (9) Stake extensions must be secured to the stake. (10) Bunks or bolsters must be either straight or curve upward. Bunks with ends lower than their center must not be used. (11) Log bunks on trucks and trailers must keep the logs from slipping endways.