The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 29
ee of eccentricity which the fan shouldhave, with reference to the fan chest, ,5 of the diameter of the fan THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. [January, has been found in praitico ti) ansnir well; that is, the space be-tween tlie fan and the chest should increase, fnini i| iif an inch atthe… … I a °4° 0 « o o II p^^r-r-r-^ H varyinif from 50 to 100 feet in length, be made not less than 1^times the area of the transit jiipe in the fan chest; aiul in distancesvarying from 100 to 200 feet in length, U times the area of thetransit pipe. The length of a tunnel maybe continued to 300 ormore…
Architecture · Civil engineering · Science
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