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<br />t_~ <br />00 <br />~ <br />N <br /> <br />c <br /> <br />I <br /> <br />XII <br /> <br />IMPERIAL DAM A..'<D DESILTING WORKS <br /> <br />GILA CANAL DESILTING WORKS <br />BediM Page <br />109 Initial insta1lation_____~______ _________ _ __ __ _________ _ __ ___ ____ 155 <br />110 Estimated desUting effieiency___________________________________ 155 <br />111 Transitions_ __ __________ ____ ___ __ _ __ ______ __ ___ _ _ _____ _______ 157 <br />112 Diversion gate structure___________u______________________u__ 158 <br />113 Canal flume structure_________________________________________ 160 <br />114 Sluice"'ay___________________________________________________ 160 <br />115 Canal approach structure______________________________________ 162 <br />116 Canal transition_u__ _ _ __ _____ __ _ __ __ h ___ __h _ _ __h _ ___ un __ 162 <br />117 Rock-fill dike__________ -_____ ____ __ __ ____ ______ ____ __ ____ _____ 163 <br />118 Percolation_ __ ____ ________ -_ __ _ __ _ _ _____ ______ ______ ____ ___ __ 163 <br />119 Gila Canal___________________________________________________ 166 <br />120 The ultimate developmenLh__uu____________________________ 167 <br /> <br />CHAPTER V-CONSTRUCTION <br />PRELIMINARY WORK BY GOVERNMENT <br /> <br />121 Access roads____ _______________________ _ __ ______ _________ _ ___ 169 <br />122 Government camp___________ u___ ____~ __ _ _ ____ __ _ ___ ___ _u _ _ _ 169 <br />123 Power line___________________________________________________ 170 <br />124 Telephone line____________~_______~_________________u_______ 171 <br />125 Clearing site____ ________________________ __ __________ _________ 171 <br />126 Plans and specifications_________h________________h_______~__ 171 <br />127 Construction contract____ ________ _________ _____ __________ _____ 172 <br /> <br />PRELIMINARY WORK BY GENERAL CONTRACTOR <br /> <br />128 Contractor's camp___~_____________________ ________________ ___ 173 <br />129 Contractor's water supply_ _____________n_____________________ 174 <br />130 Schools_________ ________ _____________ _______ ______ _____ ______ 174 <br />131 Subcontracts_________________________________________________ 174 <br />132 Empioyment__________ ________ _________ ___ ______________ ____ _ 175 <br />133 Health and accidents__________________________________u______ 175 <br /> <br />DIVERSION AND CARE OF RIVER <br /> <br />134 Cofferdams and bypass channeL_______________________________ 175 <br />135 River diversion___.____________________________________________ 176 <br />136 Bypass closure_______________________________________________ 177 <br /> <br />UNWATERING FOUNDATIONS <br /> <br />137 Foundation materials_ _ __~__ _ __________________ ____________ ___ 178 <br />138 Unwatering river-bed ms.terials_________________________________ 179 <br />139 Excavations in rock__u________u_____________________________ 179 <br />140 Overflow weir foundationsh______~____________________________ 180 <br /> <br />EXCAVATION <br /> <br />141 Source and disposal of materials________________________________ 181 <br />142 Exca.vation equipmenL_______________________________________ 182 <br />143 Quantities_ __ ___________ ____________ ___ ___ ___________________ 183 <br /> <br />PILES <br />144 The requirement_______ __ __ __ _________________________________ 183 <br />145 Manufacture of concrete pileB_~__~._uhn________"""....."._~.._n.._ 184 <br />