With ladders installed at an angle greater than 70 degrees, landing platforms are required every how many vertical meters?

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Prepare for the Mine Safety DAO 2000-98 Test. Study with flashcards and multiple-choice questions, each with hints and explanations. Get ready to pass!

Multiple Choice

With ladders installed at an angle greater than 70 degrees, landing platforms are required every how many vertical meters?

Explanation:
When a ladder is set at a very steep angle (greater than 70 degrees), safety rules require a resting and transition point after a specific amount of vertical rise to limit fall exposure and give the user a secure place to reorient. The standard calls for a landing platform every 4.5 meters of vertical height. This interval balances the need for frequent safe points with practicality for climbing. So, after climbing 4.5 meters vertically, a landing platform is required. The other distances are not the mandated interval for this steep angle, which is why 4.5 meters is the correct choice.

When a ladder is set at a very steep angle (greater than 70 degrees), safety rules require a resting and transition point after a specific amount of vertical rise to limit fall exposure and give the user a secure place to reorient. The standard calls for a landing platform every 4.5 meters of vertical height. This interval balances the need for frequent safe points with practicality for climbing.

So, after climbing 4.5 meters vertically, a landing platform is required. The other distances are not the mandated interval for this steep angle, which is why 4.5 meters is the correct choice.

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