【Daily Question】【Civil Engineering Version 20180531】

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Which of the following statements regarding the contents shown in a building site plan is correct? ( ) A. There are generally two methods for locating new buildings: one is to use existing buildings or roads as a reference for positioning ； Second, positioning is done using coordinates. B. On the general plan, elevations are expressed in meters, with three decimal places retained. C. A diagram showing the wind direction in the area where a new building will be constructed is called a wind rose; however, a wind rose cannot be used to indicate the orientation of buildings and other structures. D. Temporary structures can exceed the building limits during design and construction. Answer: A 【Explanation】There are generally two methods for positioning new buildings: one is to use existing buildings or roads as references for positioning ； The second is positioning by coordinates. Using coordinate positioning is further divided into measurement coordinate positioning and architectural coordinate positioning. In the general plan, elevations are expressed in meters and rounded to two decimal places. A wind direction frequency rose chart, also simply known as a wind rose, is a diagram showing the wind direction patterns in the area where a new building will be constructed. Wind rose diagrams can also indicate the orientation of buildings and other features. The topographic maps provided by local land administration departments to construction entities serve as blueprints, and the lines marking the land use boundaries drawn in red on these blueprints are known as the building boundary lines. No building shall exceed this line in its design and construction.