. Railroad structures and estimates . c3 3O O ci<v-aoo p^d SNOW AND SAND FENCES. 275 CHAPTER AND SAND FENCES AND SNOW SHEDS. Wood Snow Fences. — Snow fences are used in open countryto prevent or minimize trouble from drifting snow blocking thetrack. They are usually of wood, though tree and hedge fencesand earth banks are in use. When permanent, a close or open board fence is erected onthe portion of the right of way affected, 30 to 50 ft. fromtrack. When located off the right of way, permission is usuallyobtained from the farmers, and portable fences are used andplaced 150 feet or
. Railroad structures and estimates . c3 3O O ci<v-aoo p^d SNOW AND SAND FENCES. 275 CHAPTER AND SAND FENCES AND SNOW SHEDS. Wood Snow Fences. — Snow fences are used in open countryto prevent or minimize trouble from drifting snow blocking thetrack. They are usually of wood, though tree and hedge fencesand earth banks are in use. When permanent, a close or open board fence is erected onthe portion of the right of way affected, 30 to 50 ft. fromtrack. When located off the right of way, permission is usuallyobtained from the farmers, and portable fences are used andplaced 150 feet or more from the track. Kind. Approximate cost. Permanent close board fence per lin. ft Permanent open board fence per lin. ft Portable fence per lin. ft 50 to 60^40 to 50^30 to 40^ Permanent Close Board Fence. — Cedar posts 8 in. diameterby 12 ft. long, placed 8-ft. centers, standing about 8 ft. 6 ground line, and covered with |-in. boards to within onefoot of ground with 1 X 6^ cover piece over the joints ateach Fig. 91. Permanent Snow Fence (Open Board). 276 COST OF FENCING. {^^ 4 I i^ Uarrai?e bolts with 2 si^ =p CfTp 1 pUta wasters each y^ | \^ | llJ / / V V hi 1 y y \ \ 1 i» / / • 1 \ \ 1 1 K \ 1 1 :j xl-^y ! V 1 1 ..^^^/ 1 \ \ 1 III y^^y \ v il 1 /^v^ \^ \ \ 1 1 \ v 1 ■ / / N \ 1 ^^.^u ! j Iljx3x2-0lg.
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