eBook: Fire in the Forest: Dedicated to Those Who Have Fallen in the Fight (DRM EPUB)
 
電子書格式: DRM EPUB
作者: Philip Smith 
分類: Forests, rainforests ,
Environmental science, engineering & technology ,
The Earth: natural history general  
書城編號: 21495460

原價: HK$62.00
現售: HK$58.9 節省: HK$3.1

購買後立即進貨, 約需 1-4 天

 
 
製造商: Xlibris Us
出版日期: 2016/07/29
頁數: 112
ISBN: 9781524528201
 
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商品簡介
A fire lookout tower (fire tower or lookout tower) provides housing and protection for a person known as a fire lookout, whose duty is to search for wildfires in the wilderness. The fire lookout tower is a small building usually located on the summit of a mountain or other high vantage point in order to maximize the viewing distance and range, known as viewshed. From this vantage point, the fire lookout can see any trace of smoke that may develop, determine the location by using a device known as an Osborne Fire Finder, and call fire suppression personnel to the fire. The typical fire lookout tower consists of a small room known as a cab and located atop a large steel or wooden tower. However, sometimes natural rock may be used to create a lower platform. In some cases, the terrain makes it possible, so there is no need for an additional tower, and these are known as ground cabs. Ground cabs are called towers even if they dont sit on a tower. Towers gained popularity in the early 1900s, and fires were reported using telephones, carrier pigeons, and heliographs. Although many fire lookouts have fallen into disuse as a result of neglect, abandonment, and declining budgets, some fire service personnel have made an effort to preserve older fire towers, arguing that a good set of human eyes watching the forest for wildfire can be an effective and cheap fire safety measure.
Philip Smith 作者作品表

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eBook: History of the Ancient World: From the Earliest Records to the Fall of the Western Empire (DRM PDF)

The Student's Ancient History. the Ancient History of the East (Paperback)

The History of the Christian Church During the First Ten Centuries, From Its Foundation to the Full Establishment of the Holy Roman Empire and the Pap

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eBook: Fire in the Forest: Dedicated to Those Who Have Fallen in the Fight (DRM EPUB)

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