Aggregate Working Load Limit is defined as:

• The maximum weight of a load of rocks that a securement device can withstand.
• A combination of securing devices which form an assembly that attaches cargo to, or restrains cargo on, a vehicle or trailer, and is attached to anchor point(s).
• The summation of the working load limits or restraining capacity of all devices used to secure an article on a vehicle.
• The maximum load that may be applied to a component of a cargo securement system during normal service, usually assigned by the manufacturer of the component.

A container chassis vehicle is defined as:

• A vehicle especially built and fitted with locking devices for the transport of intermodal containers.
• A specialized container, primarily used to contain and transport materials in the waste, recycling, construction/demolition, and scrap industries, which are used in conjunction with specialized vehicles, in which the container isloaded and unloaded onto a tilt frame body by an articulating hook-arm.
• A reusable, transportable enclosure that is especially designed with integral locking devices that secure it to a container chassis trailer to facilitate the efficient and bulk shipping and transfer of goods by, or between various modes of transport, such as highway, rail, sea, and air.
• A structure, device, or another substantial article placed against an article to prevent it from tipping that may also prevent it from shifting.

Cargo is contained when:

• It is loaded on the end of the truck.
• It is packed in a square box.
• It fills a void between articles of cargo and the structure of the vehicle that has sufficient strength to prevent movement of the articles of cargo.
• it fills a sided vehicle, and every article is in contact with or sufficiently close to a wall or other articles so that it cannot shift or tip if those other articles are also unable to shift or tip.

What is the maximum angle recommended for tiedowns securing cement pipe loaded crosswise, relative to the deck?

• 180 degrees
• 45 degrees
• 45-90 degrees
• It doesn't matter

If the first pipe of a group in the top tier is not at the front of the tier beneath:

Attach an additional tiedown that runs rearward at an angle not more than 45 to the horizontal when viewed from the side of the vehicle, whenever practical.

Pass tiedown either through the front pipe of the upper tier or outside the front pipe and over both longitudinal tiedowns.

In cargo securement, a wedge is defined as:

• The depression formed between two cylindrical articles when they are laid with their eyes horizontal and parallel against each other.
• A rail along the side of a vehicle that protects the side of the vehicle from impacts.
• A short piece of material, usually wood, nailed to the deck to reinforce blocking.
• A tapered piece of material, thick at one end and thin at the other, used to help keep cargo from moving.

What is a headboard?

• A transverse load bearing structural component, particularly a part of a log bunk.
• A vertical barrier across the front of the deck of a vehicle to prevent forward movement of cargo.
• A vertical barrier across a vehicle to prevent forward movement of cargo.
• A vertical barrier placed directly behind the cab of a tractor to protect the cab in the event cargo should shift forward.

What is the minimum nominal dimension of timber blocking used to secure concrete pipe?

• 8 x 10 in
• Half the diameter of the pipe
• 2 x 4 in
• 4 x 6 in

The Aggregate Working Load Limit should, at minimum, be:

• Determined by the shipper.
• 100% of the weight of the cargo.
• 50% of the weight of the cargo.
• 80% of the weight of the cargo.

When securing a load of lengthwise longwood logs weighing 42,500 lbs, what is the minimum aggregate WLL required for tiedowns? (rounded up to nearest lb)

• 21,250 lbs
• 10,000 lbs
• 7,085 lbs.
• 8,550 lbs

Wen securing a non-cubic boulder with an unstable base, the four surrounding chains must have a WLL of at least:

• 50% the weight of the boulder
• 25% the weight of the boulder
• 11,000 lbs
• 5,000 lbs

Special Circumstances: Securing a Non-Cubic Shaped Boulder with an Unstable Base

The securement of a non-cubic shaped boulder with an unstable base must meet these requirements in addition to the other large boulder requirements in Section 13.

Surround the top of each boulder at a point between 1/2 and 2/3 of its height with one chain.

The WLL of the chain must be at least 50% of the weight of the boulder.

Attach four chains to the surrounding chain and the vehicle to form a blocking mechanism that prevents any horizontal movement.

Each chain must have a WLL of at least 25% the weight of the boulder, and the angle of the chain must be less than 45° from the horizontal.

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