DOT Tie-Down Requirements for Heavy Hauling

The Department of Transportation oversees many transportation-related issues and purposes. One of these correlates to heavy hauling. Not many people realize heavy haulers must meet certain requirements to transport their cargo safely and securely. Here is a short breakdown of the DOT tie-down requirements for heavy hauling.

Performance Criteria

The Department of Transportation’s tie-down requirements begin with performance criteria regarding acceleration and deceleration in various directions. These performance expectations demand any forward, rearward, or lateral movements meet the proper velocity and speed requirements to safely transport cargo. The requirements are written based on the proportion of acceleration to gravity (g) and include 0.8 g deceleration in the forward direction; 0.5 acceleration rearward; and 0.5 g acceleration in the lateral direction. Each value considers the weight and braking capacity of each hauling vehicle.

Marked and Unmarked Tie-Downs

Each securement device—straps, chains, synthetic web, wire rope, cords—has its own requirements as well, based on working load limits. Nevertheless, the proper use narrows down to marked and unmarked tie-downs. Marked tie-downs must not become loose, open, or release the cargo while in motion. Tie-downs must resist abrasion or cuts in case they touch the cargo, otherwise known as edge protection. Unmarked tie-downs also abide by these requirements. Any unmarked tie-downs must meet that of the working load limit. Further, the number of tie-downs depends on the cargo’s weight and length. There must be one tie-down that’s less than or equal to five feet and 1,100 lbs. of cargo, or more than one tie-down if the cargo exceeds five feet and more than 1,100 lbs. All cargo is placed in direct contact with each other to prevent shifting while in transit.

Commodity-Specific Requirements

Some of the most important DOT requirements for heavy hauling pertain to specific cargo. In general, cargo must be firmly secured within or on top of the vehicle with the right securement devices. Logs, dressed lumber, metal coils, paper rolls, concrete pipes, vehicles, heavy machinery, and large boulders all have their own specific requirements. No more than four processed logs can be secured at a time, and firewood, stumps, or short logs may be enclosed in containers before transport. Dressed lumber, like plywood and packaged lumber, must meet the general cargo rules. Metal coils and paper rolls cannot be transferred if weighing over 5,000 lbs. Concrete pipes are bundled together to prevent rolling. Light vehicles, such as automobiles, meet requirements when individually weighing less than 10,000 lbs. Heavy construction vehicles and machinery, weighing over 10,000 lbs., must meet special requirements because of their massive load size. Finally, large boulders or other natural objects must be secured according to their weight individually, or they are formed and cut to provide a stable base for securement.

At NessCampbell Crane & Rigging, we follow every DOT tie-down requirement based on the standards and expectations for every heavy machine we carry. That’s what makes us one of the best crane services in Portland, Oregon. Our expert operators and technicians lift, rig, haul, and engineer everything you need for your construction or heavy haul purposes. Check out our fleet of cranes and rigging machines to see how we can help.