North Carolina Building Contractor License Practice Exam

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Which of the following types of deck would have a designation 1-1/2 x 6 (WR)?

The correct answer is: 6"

The designation "1-1/2 x 6 (WR)" refers to a piece of lumber that is 1.5 inches thick and 6 inches wide. This notation is commonly used in the lumber industry to identify specific dimensions of planks or decking materials. The "WR" typically stands for "Water Resistant," which indicates that the material is treated or designed to withstand moisture and outdoor conditions, making it suitable for outdoor decks. When considering the dimensions specified, the correct answer of 6 inches indicates that the deck material's width aligns perfectly with the designation provided, as it refers directly to the "6" in "1-1/2 x 6." The other options do not correspond to the specified width and therefore cannot be correct. Thus, the understanding of standard lumber dimensions and their designations is key in correctly identifying the type of deck from the options provided.