A flatbed trailer is loaded with an unblocked crate of precision aerospace tooling measuri… — Commercial Driver's License (CDL) General Knowledge Exam

A flatbed trailer is loaded with an unblocked crate of precision aerospace tooling measuring $9\text{ feet}$ in length and weighing $8{}000\text{ pounds}$ . Under Federal Motor Carrier Safety Administration (FMCSA) cargo securement standards, securing this cargo using a single indirect tie-down strap with a Working Load Limit (WLL) of $4{}500\text{ pounds}$ meets all minimum legal securement requirements because the strap's rating exceeds $50\%$ of the cargo's total weight.

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False

The statement is false because federal cargo securement rules require compliance with both the aggregate WLL (at least

50\%

of cargo weight) and the minimum number of tie-downs. For unblocked freight measuring between

5\text{ feet}

and

10\text{ feet}

in length, a minimum of two tie-downs is required. Using only one strap violates the minimum tie-down count rule.

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Calculate the required aggregate Working Load Limit (WLL) for the cargo.

The minimum aggregate WLL required is

50\%

8{}000\text{ pounds} = 4{}000\text{ pounds}

. The single strap provides a WLL of

4{}500\text{ pounds}

, which satisfies the weight requirement.

FMCSA regulations require the aggregate WLL of all tie-downs to equal at least one-half (

50\%

) of the total weight of the article being secured.

Determine the minimum number of tie-downs required based on cargo length and blocking status.

Because the cargo is unblocked, measures

9\text{ feet}

in length (

> 5\text{ feet}

and

\leq 10\text{ feet}

), and weighs more than

1{}100\text{ pounds}

, federal rules mandate a minimum of

2\text{ tie-downs}

FMCSA tie-down rules state that unblocked articles between

5\text{ and } 10\text{ feet}

in length require at least two tie-downs regardless of the strength of an individual strap.

Evaluate overall compliance of using a single tie-down.

Using only

1\text{ tie-down}

violates the length-based count mandate despite exceeding the aggregate WLL requirement, making the setup non-compliant.

Both the minimum count and the aggregate WLL criteria must be independently satisfied for cargo securement to be legal.

Anahtar Kavram

Cargo Securement: Tie-Down Rules and WLL

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