FOREST-TRAMWAYS. 



343 



easily effected by means of a curved section placed over the 

 rails, as in fig. 184. 



[Brandis states that at Kottenforst, wooden sleepei-s are preferred 

 even for the portable portion of the railway as not liable to bend on 

 uneven ground. Two kilometers (1| miles) of branch-railway may 

 1)6 laid by two men in a day. With two wooden sleepers, one at each 

 end, a section weighs 38 kilos = 84 lbs., but the rails must be 

 heavier than when more sleepers are used, 8 kilos per meter. — Tr.] 



The main lines might be constructed in similar fashion to the 

 portable lines, but in their case the rails are 5 — 6 meters long, 

 instead of only 2 meters, and the sleepers 80 centimeters to one 

 meter apart, instead of being only at either end of the portable 

 sections, so that two men are required to lift each section 

 instead of one man. It is also greatly preferable to use wooden 

 sleepers for the main lines. 



(c) The Rolling-stock. — The rolling-stock, or trucks used for 

 transport, must, though strongly built, be as light as possible 



It is clear that these trucks must be most carefully constructed, 

 when it is remembered that heavy logs are to be carried, and that 

 the workmen incur considerable danger in moving such heavy 

 pieces of timber. At the same time light trucks are essential, 

 especially on lines with a gradient up to 7 %, and without 

 steam-power, as they have to be dragged back to the felling-area 

 by horses, and should as far as possible be made of wood. 



