FORESTRY
GENERAL FORESTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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fire history
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temperature
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humidity
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air movement
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Detailed explanation-1: -The three sides of the fire behavior triangle are weather, topography and fuels. Weather includes wind, temperature, cloudiness, moisture and air pressure. High temperatures and low humidity cause vegetation to dry and wildfires to burn rapidly.
Detailed explanation-2: -Shrinkage and swelling Wood undergoes dimensional changes when its moisture fluctuates below the fibre saturation point. Loss of moisture results in shrinkage, and gain in swelling. It is characteristic that these dimensional changes are anisotropic-different in axial, radial, and tangential directions.
Detailed explanation-3: -Exterior moisture sources include precipitation, irrigation systems and groundwater. Water vapour is also present in the exterior environment and may significantly affect the building envelope in some climates. An additional source of moisture is often called construction moisture.