CDL Practice Tests: Flatbed Cargo Securement

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Question #794 (1 of 10)

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A sided vehicle containing cargo weighing 35,980 lbs must be able to withstand a rearward force of at least:

  • 10,000 lbs
  • 17,990 lbs
  • 28,784 lbs
  • 36,000 lbs

Note: If the cargo is contained in a sided vehicle, the vehicle structure MUST be strong enough to withstand the forces described earlier.

  • Forward force: 0.8 g (80%)
  • Rearward force: 0.5.g (50%)
  • Sideways force: 0.5 g (50%)
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Question #818 (2 of 10)

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What is the minimum aggregate WLL for a group of concrete pipe weighing 16,000 lbs?

  • 7,999 lbs
  • 8,001 lbs
  • 5,000 lbs
  • 10,000 lbs

General tiedown requirements

The aggregate working load limit of all tiedowns on any group of pipe must be more than half the total weight of all pipes in the group.

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Question #721 (3 of 10)

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When securing metal coils with eyes vertical, the angle between tiedown and deck, if possible, should be:

  • 180 degrees
  • Between 60 and 90 degrees
  • 60 degrees
  • Less than 45 degrees
  • Attach at least one tiedown against front of row of coils to restrain against forward motion. If possible, angle between tiedown and deck should be less than 45, when viewed from the side of the vehicle.
  • Attach at least one tiedown against rear of row of coils to restrain against rearward motion. If possible, angle between tiedown and deck should be less than 45, when viewed from the side of the vehicle.
  • Attach at least one tiedown over top of each coil or side-by-side row of coils to restrain against vertical motion. Tiedowns going over top of coil(s) must be as close as possible to eye of coil.
  • Arrange tiedowns, blocking, or bracing to prevent shifting or tipping in all directions.
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Question #696 (4 of 10)

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What is the presumed resistance to horizontal movement of friction mats?

  • 100% of cargo weight.
  • 50% of cargo weight.
  • 20% of cargo weight.
  • 0

Note: Friction mats, which are not marked by the manufacturer, are assumed to provide a resistance to horizontal movement equal to 50% of the cargo weight that is resting on the mat.

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Question #776 (5 of 10)

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Requirements for securing a non-cubic shaped boulder with a stable base include all of the following except:

  • Pass the tiedowns over the center of the boulder
  • Wrap chains around the circumference of the boulder.
  • Attach chains together at the intersection
  • Secure each boulder individually with at least two chain tiedowns forming an X pattern over the boulder.

Secure each boulder individually with at least two chain tiedowns forming an X pattern over the boulder.

Pass the tiedowns over the center of the boulder and attach them to each other at the intersection by a shackle or other connecting device.

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Question #726 (6 of 10)

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Option #3 for securing metal coils transported with eyes lengthwise includes all of the following except:

  • Using blocking or friction mats to prevent forward movement.
  • Attaching at least one tiedown over the top of the coil near the rear of the coil.
  • Attaching at least two tiedowns through the center of the coil.
  • Attaching at least one tiedown over the top of the coil near the front of the coil.
Tiedowns, Single Coil Option #3

Option #3 is the same as Options #1 and #2, except that the two tiedowns that attach through the eye of the coil are replaced with two tiedowns that pass over the front and the rear of the coil.

Attach at least one tiedown over the top of the coil near the front of the coil.

Attach at least one tiedown over the top of the coil near the rear of the coil.

Use blocking or friction mats to prevent forward movement.

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Question #811 (7 of 10)

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Define 'bolster':

  • A structure, device, or another substantial article placed against or around an article to prevent horizontal movement of the article.
  • A crosswise 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.
  • An inflatable bag intended to fill otherwise empty space between articles of cargo, or between articles of cargo and the wall of the vehicle.

Bolster:

A crosswise load bearing structural component, particularly a part of a log bunk.

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Question #777 (8 of 10)

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

  • 5,000 lbs
  • 50% the weight of the boulder
  • 25% the weight of the boulder
  • 11,000 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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Question #804 (9 of 10)

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What is a cab shield?

  • The depression formed between two cylindrical articles when they are laid with their eyes horizontal and parallel against each other.
  • A vertical barrier across the front of the deck of a vehicle to prevent forward movement of cargo.
  • A structure, device, or another substantial article placed against or around an article to prevent horizontal movement of the article.
  • A vertical barrier placed directly behind the cab of a tractor to protect the cab in the event cargo should shift forward.
The load carrying area of a truck, trailer, or intermodal container.
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Question #802 (10 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 structure, device, or another substantial article placed against an article to prevent it from tipping that may also prevent it from shifting.
  • A vertical barrier placed directly behind the cab of a tractor to protect the cab in the event cargo should shift forward.
  • A rail along the side of a vehicle that protects the side of the vehicle from impacts.

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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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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