4. Dressed Lumber and Similar Buidling Materials
What Does This Section Cover? |
p. 47 |
Positioning and Securing Bundles |
p. 48 |
What Does This Section Cover? (Section 3.2.1)
The requirements for dressed lumber and similar building materials section
apply to certain products when they are transported as bundles on flatbed
and open vehicles.
Lumber or building products that are not bundled or pack aged should
be treated as loose items and transported in accordance with the general cargo
securement requirements in Section 2.
Bundles carried in a closed vehicle should be immobilized or contained
in accordance with the general cargo securement requirements in Section 2.
Positioning and Securing Bundles (Section 3.2.2)
Requirements for bundles placed side by side on a platform vehicle
Choose one of two options for positioning bundles:
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Place bundles in direct contact with each other.
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Provide a means (such as dunnage or blocking) to prevent the bundles
from shifting towards each other.
Requirements for bundles in one tier
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Secure bundles in accordance with general cargo securement requirements
(Section 2).
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Web tiedowns are often used to secure building materials.
Requirements for Securement System:
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In proper working order with no damaged or weakened components that affect
their performance or reduce their working load limit.
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Attached and secured in a manner that prevents them from coming loose
during transit.
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Able to be tightened by a driver of an in-transit vehicle.
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Located inboard of rub rails whenever practicable.
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Edge protection must be used when a tiedown would be subject to abrasion
or cutting.
Positioning and Securing Bundles (Section 3.2.2) (continued)
Requirements for securing bundles in two or more tiers
There are four options for securing bundles of dressed lumber that are
transported in two or more tiers. Choose one of the four.
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To block side-to-side movement, block the bundles with stakes on the
sides of the vehicle. Secure the bundles by tiedowns laid out over
the top tier, as outlined in Section 2.
Requirements for bundles in two or more tiers (continued)
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To block side-to-side movement, use blocking or high friction devices
between the tiers. Secure the bundles by tiedowns laid out over
the top tier, as outlined in Section 2.
Positioning and Securing Bundles (Section 3.2.2) (continued)
Requirements for bundles in two or more tiers (continued)
High Friction Devices
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Piece of wood with friction surface
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Other specialized equipment
Positioning and Securing Bundles (Section 3.2.2) (continued)
Requirements for bundles in two or more tiers (continued)
Option #3:
Place bundles directly on top of other bundles or on spacers.
Secure the stack of bundles with tiedowns:
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Tiedowns over the second tier of bundles or at 1.85 m (6 ft) above the
trailer deck (whichever is greater).
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Tiedowns for other multiple tiers not over 1.85 m (6 ft) above the trailer.
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Tiedowns over the top tier of bundles with a minimum of 2 tiedowns over
each top bundle longer than 1.52 m (5 ft).
Spacer Requirements
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The length of spacers must provide support to all pieces in the bottom
row of the bundle.
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The width of each spacer must be equal or greater than the height.
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Spacers must provide good interlayer friction.
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If spacers are comprised of layers of material, the layers must be unitized
or fastened together to ensure that the spacer performs as a single
piece of material.
Positioning and Securing Bundles (Section 3.2.2) (continued)
Bundles in Two or More Tiers (continued)
Option #4:
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Secure the bundles by tiedowns over each tier of bundles in accordance
with the general cargo securement requirements (Section 2).
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Use at least 2 tiedowns over each bundle on the top tier that is longer
than 1.52 m (5 ft).
Suggestion to Increase Safety
Choose one of two options for stopping forward motion:
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Place bundles against bulkhead/front end structure.
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When different tiers need to be secured, use a combination of blocking
equipment and tiedowns.
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