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The poles are then hammered into the ground and a windbreak is formed. Windbreaks or "wind fences" are used to reduce wind speeds over erodible areas such as open fields, industrial stockpiles, and dusty industrial operations. As erosion is proportional to wind speed cubed, a reduction of wind speed of 1/2 (for example) will reduce erosion by ...
But he said the wind speed gauge used was 250 metres lower and in an area that was more protected from gales. Ridge tiles from a house landed on this car just three weeks old [Anand Patel]
The state increased performance criteria for wind-load provisions and adopted new wind provisions from the American Society of Civil Engineers. One important addition to the new code was the requirement of missile-impact resisting glass , which can withstand high-velocity impact from wind-borne debris during a hurricane.
Windthrow is common in all forested parts of the world that experience storms or high wind speeds. The risk of windthrow to a tree is related to the tree's size (height and diameter), the 'sail area' presented by its crown, the anchorage provided by its roots, its exposure to the wind, and the local wind climate.
Fallen trees. The storm’s tail canceled the sixth game of the World Series in San Francisco. Its torso bulled through Oregon, with wind speeds as high as 176 mph — an improbable speed recorded ...
Wind speed alone is not enough to determine the intensity of a tornado. [3] An EF0 tornado may damage trees and peel some shingles off roofs, while an EF5 tornado can rip well-anchored homes off their foundations, leaving them bare— even deforming large skyscrapers.
A house suffered major roof damage and had one of its exterior walls blown out, while a wooden 2x4 was speared through the front wall of another house that had its windows shattered. Several other homes sustained minor roof shingle damage, a power pole was snapped, and a metal storage shed was lofted and thrown. [72] EF0 Harkers Island (2nd ...
The old scale lists an F5 tornado as wind speeds of 261–318 mph (420–512 km/h), while the new scale lists an EF5 as a tornado with winds above 200 mph (322 km/h), found to be sufficient to cause the damage previously ascribed to the F5 range of wind speeds.
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