To secure a cubic-shaped boulder, how many tiedowns are required, at minimum?

• 1
• 3
• 5
• 2

Special Circumstances: Securing a Cubic-Shaped Boulder

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

Secure each boulder individually with at least two chain tiedowns placed side-to-side across the vehicle.

Place tiedowns as closely as possible to the hardwood blocking used to support the boulder.

When calculating directional forces, 'g' is expressed as:

• The summation of the working load limits or restraining capacity of all devices used to secure an article on a vehicle.
• The acceleration due to gravity, 9.823 m/sec2 (32.2 ft/sec2). For cargo securement purposes it is expressed as a percentage of cargo weight, i.e. .5g is 50% of force of gravity or 50% of cargo weight.
• 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.
• 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.

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

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

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.

When securing an intermodal container on a chassis, what is the maximum allowable vertical travel when secured?

• 1 inch
• 2 1/2 inches
• 2 inches
• 1/2 inch

When securing paper rolls on a flatbed or curtainside vehicle, it is acceptable to stack rolls with eyes vertical:

• When temperature is 63 degrees F or more.
• Stacking rolls with eyes vertical is not acceptable
• When using tiedowns that wrap twice around the load.
• When total weight is less than 5,000 lbs.

Which of these are requirements for securement systems?

• If a tiedown would be subject to cutting or abrasion, edge protection should be used.
• Components should be in proper working order.
• There should be no knots in the tiedowns.
• These all qualify as requirements.

What is a rub rail?

• A platform or tray on which cargo is placed so that it can be handled as an article. (Same as "Skid")
• A rail along the side of a vehicle that protects the side of the vehicle from impacts.
• A device placed between the deck of a vehicle and car or between articles of cargo, intended to provide greater friction than exists naturally between these surfaces.
• A strip of material that may be used to unitize articles and is tensioned and clamped or crimped back upon itself. (same as "Strapping")

When using tiedowns for securing cargo, what is the general rule regarding cargo length.

• 1 tiedown for every 15 ft, or part thereof.
• 1 tiedown for every 10 ft, or part thereof.
• 2 tiedowns for every 10 ft, or part thereof.
• 1 tiedown for every 5 ft, or part thereof.

When cargo is prevented from forward movement (for example, by the headboard, bulkhead, other cargo, or tiedown), secure the cargo according to the following requirements:

All Cargo:

1 tiedown for every 10 ft, or part thereof.

One option of positioning bundles of building materials is:

• Lean them to the outside.
• Place them in direct contact with each other.
• Turn them so only their corners are touching.
• Lean them against each other.

What is the minimum weight of a load of metal coils that requires specific securement practices?

• It depends on the size of the coils.
• 2,268 lbs
• 50,000 lbs
• 5,000 lbs

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