CDL Practice Tests: Flatbed Cargo Securement
Choose A Section:
Go!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 nylon straps with aggregate WLL of 50% the weight of the load.
- Two 3/8 inch chains or wire ropes.
- One 3/8 inch chain or wire rope.
- Two 1/4 inch chains or wire ropes.
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
Methods to keep a cradle from sliding include:
- Placing a tiedown around the front of the cradle.
- Nailed wood blocking or cleats.
- These can all be used.
- Friction mats under the cradle.
Requirements for securing a single coil
Prevent the coil from rolling by supporting it:
- Timbers, chocks, or wedges held in place by coil bunks or similar devices to prevent them from coming loose.
- A cradle (for example, two hardwood timbers and two coil bunks) that is restrained from sliding by:
- Friction mats under the cradle.
- Nailed wood blocking or cleats.
- Placing a tiedown around the front of the cradle.
- The support must:
- Support the coil just above the deck.
- Not become unintentionally unfastened or loose in transit.
Define 'bolster':
- 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.
- An inflatable bag intended to fill otherwise empty space between articles of cargo, or between articles of cargo and the wall of the vehicle.
- A crosswise load bearing structural component, particularly a part of a log bunk.
Bolster:
A crosswise load bearing structural component, particularly a part of a log bunk.
How many tiedowns are required on a stack of shortwood loaded crosswise?
- 3
- It depends on the weight
- 2
- 1
Tiedowns requirements
Use two tiedowns to secure one stack of shortwood loaded crosswise.
Attach the tiedowns to the vehicle frame at the front and rear of the load.
Position tiedowns approximately 1/3 and 2/3 of the length of the logs.
When securing paper rolls with eyes crosswise, which of the following can be used to prevent side-to-side shifting when there is more than 8 inches of space to the wall?
- Friction mats.
- Void fillers.
- Tiedowns.
- Any of these methods are acceptable.
Requirements for eyes crosswise: prevent rolls from shifting toward either wall
If there is more than a total of 203 mm (8 in) of space between the ends of a paper roll and other rolls or the walls of the vehicle, use one of these methods:
- Void fillers (such as honeycomb)
- Blocking
- Bracing
- Friction mats
- Tiedowns
Requirements for securing heavy vehicles, equipment, and machinery apply at what weight?
- Less than 10,000 lbs
- More than 10,000 lbs
- 50% the weight of the trailer
- More than 4,500 lbs
What Does This Section Cover?
The requirements in this section apply to the transportation of heavy vehicles, equipment, and machinery that:
- Operate on wheels or tracks, such as front end loaders, bulldozers, tractors, and power shovels.
- Individually weigh more than 4500 kg (10,000 lb.).
When loaded cement pipe over 45 inches in diameter, which pipes should be blocked, wedged, or otherwise immobilized?
- Front only.
- Front and rear.
- Rear only.
- It depends on the weight of the load.
Immobilize the front and rear pipe with on of the following methods:
- Blocking
- Wedges
- Vehicle end structure
- Stakes
- Locked pipe unloader
- Other equivalent means
To secure a cubic-shaped boulder, how many tiedowns are required, at minimum?
- 2
- 1
- 5
- 3
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.
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 is:
- A friction mat.
- A chock.
- A cleat.
- Void filler.
Friction mat:
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.
The maximum distance from the rear allowed for attaching mechanisms used to secure roll-on/roll-off containers is:
- 3 feet
- It doesn't matter.
- 6 1/2 feet
- 2 feet
Attach mechanisms used to secure the rear end of a roll-on/roll-off or hook lift container no more than two meters (6.5 feet) from the rear of the container.
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
- 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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