Question 1893 Deck Safety

The correct answer is A) circular type pillar. The circular pillar shape is the most efficient in terms of providing the greatest strength for the least amount of weight. This is because the circular cross-section of the pillar evenly distributes the load-bearing stresses, resulting in a more structurally sound and efficient design compared to other shapes like the "I" beam or "H" beam. The other options, B) "I" Beam pillar, C) octagonal pillar, and D) "H" Beam pillar, are less efficient in terms of weight-to-strength ratio, as they have a less uniform distribution of stresses and require more material to achieve the same level of structural integrity as a circular pillar.