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Securing Pipe with an Inside Diameter Up to 1143 mm (45 in)

Concrete pipe with an inside diameter up to 1.143 m (45 in) can form a complete single tier on a typical flatbed vehicle. Larger pipe often can only be carried as a partial tier.

Note: This pipe diameter of 1.143 m (45 in) is simply a convenient breaking point between "medium" and "large" diameter pipe.

Note: At least one tie-down through the front pipe of the bottom tier must run rearward at an angle not more than 45 with the horizontal when viewed from the side of the vehicle, when ever practical.

At least one tie-down through the rear pipe of the bottom tier must run forward at an angle not more than 45 with the horizontal when viewed from the side of the vehicle, when ever practical.

Requirements for stabilizing the bottom tier

Arrange the load properly

Immobilize the front and rear pipe with on of the following elements.
  • Blocking
  • Wedges
  • Vehicle end structure
  • Stakes
  • Locked pipe unloader
  • Other equivalent means
Tie-down requirements
  • Pipe may be secured individually or as a group.
  • Tie-downs through the pipe must be chains.
  • Front-to-back tie-downs may be chain or wire rope.
Individually

Run a tie-down though the pipe.

As a group

Place lengthwise tie-downs 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

Place one crosswise tie-down for every 3.0 m (10 ft) of load length.

Either attach the side-to-side tie-down through a pipe

Or pass the tie-down over both front-to-back tie-downs between two pipes on the top tier.

Multiple-Choice Questions:

Question #749 (1 of 4)

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When securing concrete pipe with a diameter up to 45 inches loaded crosswise as a group, a crosswise tiedown should be used every how many feet?

  • 10
  • 6
  • 15
  • 3
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

Place one crosswise tiedown for every 3.0 m (10 ft) of load length.

Either attach the side-to-side tiedown through a pipe

Or pass the tiedown over both front-to-back tiedowns between two pipes on the top tier.

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Question #748 (2 of 4)

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When securing concrete pipe up to 45 inches loaded crosswise, tiedowns through the pipe must be:

  • Nylon rope.
  • Straps.
  • Wire.
  • Chains
Tiedown requirements
  • Pipe may be secured individually or as a group.
  • Tiedowns through the pipe must be chains.
  • Front-to-back tiedowns may be chain or wire rope.
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Question #750 (3 of 4)

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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 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

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Question #751 (4 of 4)

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Concrete pipe loaded crosswise generally:

  • Concrete pipe with an inside diameter up to 1.143 m (45 in) can form a complete single tier on a typical flatbed vehicle. Larger pipe often can only be carried as a partial tier.
  • Note: At least one tiedown through the front pipe of the bottom tier must run rearward at an angle not more than 45 with the horizontal when viewed from the side of the vehicle, when ever practical.
  • At least one tiedown through the rear pipe of the bottom tier must run forward at an angle not more than 45 with the horizontal when viewed from the side of the vehicle, when ever practical.
  • All of these things apply.

Special Circumstances: Securing Pipe with an Inside Diameter Up to 1.143 mm (45 in)

Concrete pipe with an inside diameter up to 1.143 m (45 in) can form a complete single tier on a typical flatbed vehicle. Larger pipe often can only be carried as a partial tier.

Note: This pipe diameter of 1.143 m (45 in) is simply a convenient breaking point between "medium" and "large" diameter pipe.

Note: At least one tiedown through the front pipe of the bottom tier must run rearward at an angle not more than 45 with the horizontal when viewed from the side of the vehicle, when ever practical.

At least one tiedown through the rear pipe of the bottom tier must run forward at an angle not more than 45 with the horizontal when viewed from the side of the vehicle, when ever practical.

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