Coastal and Floodplain Construction Inspector's Practice Exam

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What is the minimum gust wind speed for special installation methods of asphalt roof shingles in high wind, coastal regions?

60 mph
80 mph
90 mph
100 mph

The correct answer is: 90 mph

Special installation methods for asphalt roof shingles are necessary in high wind, coastal regions due to the increased risk of wind-induced damage. The minimum gust wind speed that triggers these special installation methods is 90 mph. This threshold has been established based on research indicating that wind speeds beyond this level can significantly increase the likelihood of shingles being lifted or blown off roofs. In areas prone to severe weather, such as hurricanes or strong storms, using enhanced installation techniques—such as using additional fasteners or specific adhesive products—helps ensure that roofing systems maintain their integrity against such high gusts. This standard is crucial for maintaining the safety and durability of roofs in these vulnerable regions, protecting both the structure itself and its occupants from potential damage during severe weather events. The other wind speed options do not meet the established criteria for special installation methods and therefore do not provide adequate protection against the damage that wind speeds of 90 mph or higher can cause in coastal areas.