CDL Practice Tests: Flatbed Cargo Securement
Choose A Section:
Go!If loading and securing paper rolls on a second layer:
- Lay the second layer horizontally.
- Be sure the bottom layer extends to the front of the vehicle.
- Make sure heavier rolls are on top.
- Stack the second layer at the back.
Stacked Loads
- Load paper rolls on a second layer only if the bottom layer extends to the front of the vehicle.
-
Prevent forward, rearward, or side-to-side movement:
- Either by the same means required for the bottom layer
- Or by the use of a blocking roll from a lower layer.
- A roll in the rearmost row of any layer must not be raised using dunnage.
When securing concrete pipe over 45 inches loaded crosswise, which direction must the tiedowns on the rear half of the load run?
- Rearward
- Forward
- It doesn't matter.
- Straight up and down.
Requirements for securing the pipe
Secure each pipe with tiedowns through the pipe.
Run at least one tiedown through each pipe in the front half of the load. This includes the middle one if there are an odd number. The tiedown must run rearward at an angle not more than 45° with the horizontal when viewed from the side of the vehicle, whenever practicable.
Run at least one tiedown through each pipe in the rear half of the load. The tiedown must run forward at an angle not more than 45° with the horizontal when viewed from the side of the vehicle, whenever practicable. This holds each pipe firmly in contact with adjacent pipe.
When securing rolls of paper with eyes vertical, how many points of contact are required to consider a roll secure?
- 4
- 2
- 1
- 3
Usually the roll is secure if a paper roll has 3 well-separated points of contact with the vehicle, other rolls, or other cargo.
What is a rub rail?
- A rail along the side of a vehicle that protects the side of the vehicle from impacts.
- 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 platform or tray on which cargo is placed so that it can be handled as an article. (Same as "Skid")
- 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.
Rub Rail:
A rail along the side of a vehicle that protects the side of the vehicle from impacts.
What is the minimum weight of a shipment of paper rolls that would require specific securement requirements?
- It depends on how they're loaded
- 10,000 lbs
- 2,268 lbs
- 5,000 lbs
The rules in this section apply to shipments of paper rolls, which individually or together, weigh 2268 kg (5000 lb.) or more.
Note: Shipments of paper rolls that weigh less than 2268 kg (5000 lb.), and paper rolls that are unitized on a pallet may either be secured in accordance this section or with the general cargo securement requirements
When securing concrete bell pipe in multiple complete tiers, all of the following are true except:
- All of these apply.
- Bells of the upper tiers must all be on the opposite side of the vehicle from the bells of the tier below.
- Stack the tiers in pyramid fashion.
- Bells of the bottom tier must all be on the same side of the vehicle
More than one tier with complete tiers
Bells of the bottom tier must all be on the same side of the vehicle
Bells of the upper tiers must be are on the opposite side of the vehicle from the bells of the tier below.
A sided vehicle containing cargo weighing 35,980 lbs must be able to withstand a rearward force of at least:
- 10,000 lbs
- 28,784 lbs
- 36,000 lbs
- 17,990 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%)
Which of the following is not true of Working Load Limit (WLL)?
- The WLL is usually assigned by the component manufacturer.
- The minimum WLL requirement for the securement system is 25%.
- All of these are true.
- The Working Load Limit is the maximum load that may be applied to a component of a cargo securement system.
The Working Load Limit is the maximum load that may be applied to a component of a cargo securement system during normal service.
The WLL is usually assigned by the component manufacturer.
Note: The minimum WLL requirement for the securement system is 50%. More tiedown capacity should be used if you need to secure an article against any movement.
What is the minimum WLL of a tiedown used to secure logs?
- 1,800 lb
- 50% of cargo weight
- 4,000 lb
- It depends on if you are hauling shortwood or longwood
- 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.
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 crosswise load bearing structural component, particularly a part of a log bunk.
- A structure, device, or another substantial article placed against or around an article to prevent horizontal movement of the article.
Bolster:
A crosswise load bearing structural component, particularly a part of a log bunk.
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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