OCR Text |
Show 120 hlbitive. Tho experienced engineer designs a structure for the purpose of passing all ordinary floods, knowing that it is liable to destruction "ay tho occasional cloudbursts that ocour. Tho structures on the Uintah Project were designed In aooordauoe with tho usual practice, and are subject to destruction under unusual oirciaistances. This condition was especially apparent on both tho Bed Cap and tha Deep Creek Canals where thare were several structures that were exceptionally difficult tc caintain. Prequently on a new project tha head-gates and other structures are mate of perishable material for the purpose of economy. This waa the case on tho Uintah 3^ro-jcot where the long distance from the railroad rendered the cost of construction of anything but a wooden 3tructuro prohibitive. •Wood disintegrates in froa eight to ten years, and must be replaced, ^hsn replacements have to be made,, either as the result of disintegration or destruction, it is a source of annoyance to tho irrigator, and SOEO are apt to question tho ability of the engineer, not realising that his presmt ire onvoni erica is the result of an earlier saving. Hew Caml3;- AH new earth canals where tho soil is of a light, friable texture, as on the Deep Creek ard 12U |