Question 253Safety & Environmental - 1st Asst/Chief

70% to pass

The wooden shoring shown in the illustration is bearing against the hatch coaming and is supporting a load in the direction indicated by the arrows. Which of the following statements is correct for this condition? Illustration SF-0018

Diagram for USCG Safety Chief: The wooden shoring shown in the illustration is bearing against the hatch...
AShore "A" will support the greatest load.
BShore "A" will not slip under load.
CShore "B" will support the load without it cracking.
DShore "B" will crack at the pointed end.
AI Explanation

The correct answer is C) Shore "B" will support the load without it cracking. The reasoning for this is that the pointed end of shore "B" is bearing against the hatch coaming, which provides a larger surface area for the load to be distributed. This reduces the stress on the wood, making it less likely to crack under the applied load. In contrast, shore "A" has a smaller bearing surface, so it would be more prone to failure. The other options are incorrect because: A) shore "A" may not necessarily support the greatest load due to the smaller bearing surface; B) shore "A" could still slip under load due to the smaller bearing area; and D) shore "B" may not necessarily crack at the pointed end, as the larger bearing surface helps distribute the load more evenly.

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