CDL Practice Tests: Flatbed Cargo Securement
Choose A Section:
Go!Which of these is specifically prohibited when securing crushed or flattened vehicles?
- Synthetic webbing.
- Chains.
- Wire rope.
- Containment walls.
Securement Requirements
Transport flattened or crushed vehicles so that:
- Cargo does not shift while in transit AND
- Loose parts from the flattened vehicles do not dislodge and fall from the transport vehicle
Do not use synthetic webbing to secure vehicles.
When securing a single metal coil with eyes vertical:
- Attach at least one tiedown diagonally across eye of coil from left side of vehicle to right side of vehicle.
- Attach at least one tiedown diagonally across eye of coil from right side of vehicle to left side of vehicle.
- Attach at least one tiedown over eye of coil from side-to-side.
- These are all requirements.
To prevent the coil from tipping forward, rearward, and sideways, arrange tiedowns to include the following:
- Attach at least one tiedown diagonally across eye of coil from left side of vehicle to right side of vehicle.
- Attach at least one tiedown diagonally across eye of coil from right side of vehicle to left side of vehicle.
- Attach at least one tiedown over eye of coil from side-to-side.
Within the requirements for concrete pipe, which of these requires specific securement methods?
- Concrete pipe loaded in a sided vehicle or container.
- Concrete pipe that is grouped together into a single rigid article and may not roll.
- Concrete pipe eyes vertical and concrete pipe loaded lengthwise.
- Concrete pipe loaded cross-wise on a flatbed trailer.
What is exempt from these specific requirements?
Follow general cargo securement requirements (Section 2) when transporting the following pipe:
- Concrete pipe that is grouped together into a single rigid article and may not roll.
- Concrete pipe loaded in a sided vehicle or container.
- Concrete pipe eyes vertical and concrete pipe loaded lengthwise.
What is covered under these specific requirements?
Any concrete pipe loaded crosswise on a platform trailer or vehicle that is not exempt.
Define 'bolster':
- 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.
- 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.
Bolster:
A crosswise load bearing structural component, particularly a part of a log bunk.
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 summation of the working load limits or restraining capacity of all devices used to secure an article on a vehicle.
- The maximum weight of a load of rocks that a securement device can withstand.
- 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.
What is the minimum WLL required of tiedowns securing loaded intermodal containers on non-chassis vehicles?
- 50% of the loaded weight of the container.
- It depends on the length of the container.
- 20% of the loaded weight of the container.
- 80% of the loaded weight of the container.
Secure each container to the vehicle by:
- Either chains, wire ropes, or integral devices that are fixed to all lower corners.
- Or crossed chains that are fixed to all upper corners.
- Or both.
Secure the front and rear of the loaded container independently.
Secure the four corners using tiedowns that are attached to the loaded container.
The tiedowns must have an aggregate working load limit of at least 50% of the loaded weight of the loaded container.
Attach each chain, wire rope, or integral locking device to the container in a manner that prevents it from becoming unfastened while in transit.
What is the minimum number of tiedowns to use on a load 4ft 7in long, and weighing 1,237 lbs?
- 1
- 3
- 2
- 4
-
If load is 5ft or shorter, 1,100 lbs or lighter:
Minimum number of tiedowns: 1
-
If load is 5ft or shorter, over 1,100 lbs:
Minimum number of tiedowns: 2
-
If load is more than 5ft but less than 10ft:
Minimum number of tiedowns: 2
A sided vehicle containing cargo weighing 35,980 lbs must be able to withstand a rearward force of at least:
- 28,784 lbs
- 17,990 lbs
- 36,000 lbs
- 10,000 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%)
When securing paper rolls with eyes horizontal, which of the following should be used to secure the rear-most roll?
- All of these are acceptable
- Secure blocking against rear doors.
- Secure roll against rear doors.
- Wedges or chocks secured by some means in addition to friction.
Note: Chocks, Wedges, or Blocking Securing the Front or Rear Roll - Hold in place by some means in addition to friction so they cannot become unintentionally unfastened or loose while the vehicle is in transit. This is often accomplished with nails.
Requirements for eyes crosswise: secure rearmost roll
Do not secure the rearmost roll with:
- Either the rear doors of the vehicle or intermodal container
- Or blocking held in place by those doors.
When using tiedowns for securing cargo, what is the general rule regarding cargo length.
- 1 tiedown for every 10 ft, or part thereof.
- 1 tiedown for every 5 ft, or part thereof.
- 1 tiedown for every 15 ft, or part thereof.
- 2 tiedowns for every 10 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.
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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