CDL Practice Tests: Flatbed Cargo Securement

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Question #802 (1 of 10)

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The term 'edge protector' refers to:

  • A device placed on the exposed edge of an article to distribute tiedown forces over a larger area of cargo than the tiedown itself, to protect the tie-down and/or cargo from damage, and to allow the tiedown to slide freely when being tensioned.
  • A rail along the side of a vehicle that protects the side of the vehicle from impacts.
  • A vertical barrier placed directly behind the cab of a tractor to protect the cab in the event cargo should shift forward.
  • A structure, device, or another substantial article placed against an article to prevent it from tipping that may also prevent it from shifting.

Edge protector:

A device placed on the exposed edge of an article to distribute tiedown forces over a larger area of cargo than the tiedown itself, to protect the tie-down and/or cargo from damage, and to allow the tiedown to slide freely when being tensioned.

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Question #756 (2 of 10)

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

  • 45-90 degrees
  • 180 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.

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Question #750 (3 of 10)

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When securing concrete pipe with a diameter up to 45 inches loaded crosswise as a group,lengthwise tiedowns should be either one 1/2 in chain or wire rope, or:

  • Two 3/8 inch chains or wire ropes.
  • Two nylon straps with aggregate WLL of 50% the weight of the load.
  • Two 1/4 inch chains or wire ropes.
  • One 3/8 inch chain or wire rope.
As a group

Place lengthwise tiedowns over the group of pipes:

Either one 13 mm (1/2 in) chain or wire rope,

Or two 10 mm (3/8 in) diameter chain or wire rope

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Question #817 (4 of 10)

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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)

  • 10,000 lbs
  • 8,550 lbs
  • 21,250 lbs
  • 7,085 lbs.
Working load limit for longwood and shortwood loaded lengthwise

The aggregate working load limit for all tiedowns must be no less than 1/6 the weight of the stack of logs.

Note: This requirement is much less than the general requirement of an aggregate working load limit equal to 1/2 the weight of the load. This lowered requirement recognizes that the bunks/stakes help to prevent slippage.

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Question #796 (5 of 10)

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Aggregate Working Load Limit is defined as:

  • 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 maximum weight of a load of rocks that a securement device can withstand.
  • 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.

Aggregate Working Load Limit:

The summation of the working load limits or restraining capacity of all devices used to secure an article on a vehicle.

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Question #719 (6 of 10)

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

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

All metal coil shipments that, individually or together, weigh 2,268 kg (5,000 lb.) or more must be secured according to the specific requirements in this section.

Exception: Metal coils that weigh less than 2,268 kg (5,000 lb.) may be secured according to general securement requirements.

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Question #771 (7 of 10)

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To prevent rolling, how many points of contact are required, at minimum, for a boulder resting on a rounded or partially rounded side?

  • 4
  • 2
  • 3
  • 5
Requirements

If the flattest side of the boulder is rounded or partially rounded, place the boulder in a crib made of hardwood fixed to deck of vehicle.

Boulder should rest on both deck and timber, with at least 3 well-separated points of contact that prevent rolling in any direction.

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Question #791 (8 of 10)

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A tiedown is defined as:

  • A rail along the side of a vehicle that protects the side of the vehicle from impacts.
  • A structure, device, or another substantial article placed against or around an article to prevent horizontal movement of the article.
  • A strip of material that may be used to unitize articles and is tensioned and clamped or crimped back upon itself. (same as "Strapping")
  • 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).

Tiedown:

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).

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Question #741 (9 of 10)

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To secure paper rolls with eyes horizontal against rearward movement, you can use which of the following except:

  • Blocking.
  • The vehicle wall.
  • Other cargo.
  • Friction mats.
Direction of Potential Movement: Rearward

Methods to Prevent Movement:

  • Other cargo
  • Blocking
  • Fiction mats
  • Tiedowns
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Question #703 (10 of 10)

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What is the minimum WLL of a tiedown used to secure logs?

  • It depends on if you are hauling shortwood or longwood
  • 50% of cargo weight
  • 4,000 lb
  • 1,800 lb
  • Use tiedowns in combination with bunks, stakes, or standards and bolsters to secure the load.
  • All tiedowns must have a working load limit not less than 1,800 kg (4,000 lb.).
  • Tension tiedowns as tightly as possible but not beyond their working load limit.
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About The Flatbed Cargo Securement CDL Manual

Studying the flatbed cargo securement CDL manual is not a requirement for getting your CDL permit or license. It is required knowledge for flatbed drivers.

Some questions you should be able to answer for flatbed cargo securement:

  • What is the minimum Working Load Limit of a tiedown used to secure logs?
  • What is the minimum weight of a shipment of paper rolls that would require specific securement requirements?
  • When securing concrete pipe over 45 inches loaded crosswise, which direction must the tiedowns on the front half of the load run?
  • What is a cab shield?
  • When securing concrete pipe over 45 inches loaded crosswise, which direction must the tiedowns on the rear half of the load run?
  • What is a dunnage bag?
  • Who is responsible for inspecting securing devices and cargo within the first 50 miles?
  • How many tiedowns are required on a stack of shortwood loaded crosswise?
  • What is the minimum working load limit of each tiedown used to secure crushed or flattened vehicles?
  • Define 'bolster'
  • What is a hook-lift container?
  • When a tiedown is attached directly to the cargo, what is the ideal angle where it attached to the vehicle?

What is a securing device?

Any device specifically manufactured to attach or secure cargo to a vehicle or trailer:

  • Synthetic Webbing
  • Chain
  • Wire rope
  • Manila rope
  • Synthetic rope
  • Steel strapping
  • Clamps and latches
  • Blocking
  • Front-end structure
  • Grab hooks
  • Binders
  • Shackles
  • Winches
  • Stake pockets
  • D-rings
  • Pocket
  • Webbing ratchet
  • Bracing
  • Friction mat

What is a tiedown?

A combination of securing devices that forms an assembly that:

  • Attaches cargo to, or restrains cargo on a vehicle.
  • Is attached to anchor point(s).

Some tiedowns are attached to the cargo and provide direct resistance to restrain the cargo from movement.

Some tie-downs pass over or through the cargo. They create a downward force that increases the effect of friction between the cargo and the deck. This friction restrains the cargo.

Related Cargo Securement Terms That Every Driver Should Know:

  • Tiedown:

    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).

  • Contained:

    Cargo is contained if 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.

  • Blocking:

    A structure, device, or another substantial article placed against or around an article to prevent horizontal movement of the article.

How should tiedowns be attached?

Tiedowns can be used in two ways:

  • Attached to the cargo:

    • Tiedowns attached to the vehicle and attached to the cargo.
    • Tiedowns attached to the vehicle, pass through or aroundan article of cargo, and then are attached to the vehicle again.

  • Pass over the cargo:

    • Tiedowns attached to the vehicle, passed over the cargo, and then attached to the vehicle again.

Tiedown placement:

Place the tiedown as close as possible to the spacer.

Position the tiedowns as symetrically as possible over the length of the article.

Position the tiedowns to preserve the integrity of the article.

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