Laserfiche WebLink
<br />c <br /> <br />CHAPTER VIII-TRANSPORTATION AND <br />ERECTION <br /> <br />INTRODUCTION <br />&dlon Page <br />154. General description___n__h__n__ _ ___ _______~____n_________~_ 247 <br />155. General contract requirements_h_____________~_____h__________ 249 <br />156. Sequence of operations_____nhh_n___hun___n___n_______.:. 249 <br /> <br />II") <br />~ <br />~ <br />C\J <br /> <br />TRANSPORTATION <br />157. Moving pipe sections from shop to tunnel adits___h____~_h__h__ 250 <br />158. Moving pipe sections to the canyoD_____h_h__hn_h_h_______ 251 <br />159. Lowering pipe sections into the canyon_h_hh~___hh~h_______ 252 <br />160. Moving pipe sections into the tunnelsh___h_h____hu__h__h__ 256 <br />161. Hoisting pipe sections in inclined tunnels__hh__h_hu__h_hn_ 259 <br />162. Tra.nsportation of penstock and outlet pipeS_nn__hu___h_h___ 264 <br />ERECTION OF PIPE SECTIONS <br /> <br />( <br /> <br />163. Summary of operations_______h______________________________~ <br />164. AssemblingrigB_____________________________,_________________ <br />165. Assembling ADd shrink fitting pipe sections_______________________ <br />166. Drilling and countersinkingn_...____________________u__________.. <br />167. Broaching and pinningh_n_________n_n_______________n____.. <br />168. ~panning__________________________________________________ <br />169. Pin calking__u_________________h_ 0._ ___ __0. _ _0. __0._________ <br />170. Butt-strap calking______ _ _ _ _ _ _ __ _ __ ___ __ _ _ _ _ 0. _ _ _ _ _ _ _ _ _ _ _ _ _ 0.__ <br />171. Erection of penstocks__n_ _______ _____ _ ___ ____~_____ _ _ _________ <br />172. Erection of outlet pipeS_h_h__n_nnn__nn.._n_h________h <br />173. Field-welded girth joints_ _ __0.__0._0.__0.________________0.__0. <br />174. Details of field girth jointsh _____h_U____ __u__h_____h_U_U <br />175. Testing field girth joiuts___h____________h_______________u___ <br />176. Penstock bulkheads_ ______ ___~________________ --__________n__ <br />177. Turbine inlet pipes___________~_______ ~_________ ________n __n. <br /> <br />264 <br />264 <br />266 <br />268 <br />269 <br />270 <br />272 <br />273 <br />273 <br />274 <br />276 <br />278 <br />279 <br />281 <br />281 <br /> <br />CHAPTER IX-PRESTRESSING <br /> <br />INTRODUCTION <br />178. Preliminary studies and conclusJons_____nn__hu__n_____n___ 287 <br />179. General plan andprocedure____________________________~_______. 289 <br />PRELIMINARY OPERATIONS <br />180. Test of thrust bars_ _h_U___h___U_h_U__________h_______h 290 <br />181. Teat of ratchet screw-jackn_____n_____________________________ 291 <br />182. Calibration of gages___h____h____.______h_________h__h_U_ 292 <br />183. Thermal coefficient of penstock eteeLn_____n_h__nUn___n___ 292 <br />GENERAL FEATURES OF PRESTRESSING AND JOINT <br />CLOSURE <br />184. Prestress closure joints_n___n___h_-.._____h___n_h_u___hu 293 <br />185. Penstook connection jOintShn____h_h_n______nun__n_h__ 294 <br />186. Development of prestress force_ _ _ ___________________n_______ __ 295 <br />187. Determination of filier-ring widths____h____h______h_u_____u 295 <br />188. Fabrication and installation of filler rings________________________ 297 <br />189. Control of prestress operations___n___n_n_n_n_nh_h___h._ 298 <br />190. Control of temperature_h________nUn_h__n___n__h__h___ 299 <br />