@UTF8 @Begin @Languages: eng @Participants: BEN BEN Speaker, ENV ENV Environment, AUD AUD Speaker, X X Speaker, AUD2 AUD_2 Speaker @Options: CA, caps, bullets @ID: eng|SBCSAE|BEN|||||Speaker||| @ID: eng|SBCSAE|ENV|||||Environment||| @ID: eng|SBCSAE|AUD|||||Speaker||| @ID: eng|SBCSAE|X|||||Speaker||| @ID: eng|SBCSAE|AUD2|||||Speaker||| @Media: 38, audio @Comment: Good Strong Dam @Comment: This segment is part of a tour of Hoover Dam, on the Nevada-Arizona border. The presentation is highly practiced. The main speaker also answers audience questions. *BEN: (.) Okay folks 0_708 we're coming to a short stairway 708_2142 use the handrails 2142_2970 and be careful please . 2970_4087 *ENV: &=FOOTSTEPS_AND_AMBIENT_CROWD_NOISE . 4087_94800 *BEN: Okay folks 94800_95277 let's find out where we are . 95277_96340 *BEN: (..) We got on the elevator right here 96340_98341 (.) came down and stood on the balcony overlooking the power plant 98341_101019 (..) &=in down that stairway 101019_102583 out on the power plant ramp about that far 102583_104621 &=in then right at that yellow line . 104621_106508 *BEN: &=in And you're now standing over the second-largest water pipe in the world 106508_110367 &=in and it's called a penstock . 110367_112169 *BEN: (..) More about that a little bit later . 112169_113829 *BEN: (.) &=in The Colorado River 113829_115576 flows in this direction . 115576_116871 *BEN: &=in In order to build a dam here 116871_118334 the very first thing they had to do: 118334_119995 &=in was to get rid of that river . 119995_121498 *BEN: (.) &=in So they came up here above where the dam was to be built 121498_124062 &=in and drilled and blasted out 124062_125615 four diversion tunnels . 125615_127057 *BEN: &=in Two on either si:de 127057_128712 &=in into the canyon wall 128712_130008 around where the dam was to be built 130008_131566 &=in out in the river down below . 131566_133106 *BEN: &=in Each one of these tunnels were drilled and blasted out at fifty-six feet in diameter 133106_137059 &=in and then lined with three feet of concrete . 137059_139037 *BEN: (.) &=in You're now standing in one of those old diversion tunnels . 139037_141740 *BEN: (..) &=in They then came up here 141740_143063 and they built a cofferdam about a hundred feet high 143063_145367 &=in to force this river into these diversion tunnels . 145367_148081 *BEN: &=in Came back down here 148081_149225 built the other part of that cofferda:m 149225_150932 &=in about sixty-five feet high: 150932_152823 &=in to keep this water from backing into the work area . 152823_155578 *BEN: &=in They now had from he:re 155578_157284 &=in to here where they could build a dam . 157284_159045 *BEN: (.) &=in They pumped the water out of this area 159045_161085 &=in and excavated down another hundred and thirty-five feet to bedrock . 161085_164614 *BEN: (.) &=in Okay folks 164614_165550 if you will please 165550_166210 take a look at this picture taken during construction 166210_168142 (.) &=in looks like a series of boxes or blocks 168142_170764 stacked one on top of the other 170764_172160 (.) &=in and those are wooden concrete fo:rms . 172160_174694 *BEN: &=in Each one of those forms are exactly five feet high 174694_177381 &=in but they did vary in area somewhat 177381_179659 &=in because they did not build the dam right straight across the river 179659_182756 &=in from canyon wall to canyon wa:ll 182756_184641 &=in they built it in the form of an arc . 184641_186624 *BEN: (..) And it's called an arch (.) gravity design dam . 186624_189457 *BEN: &=in Where the force of the water 189457_190965 coming down the Colorado River hits the face of the dam 190965_193414 &=in and tends to try to drive these wingtips further into the canyon wa:ll . 193414_197085 *BEN: (.) &=in It's a very strong design . 197085_199179 *BEN: (..) They did build two concrete mixing plants here 199179_202265 &=in they did pour concrete for twenty-four hours a day 202265_204764 seven days a week 204764_205808 &=in three hundred and sixty-five days a year . 205808_208020 *BEN: &=in For two years 208020_209282 (.) less (..) six days . 209282_211010 *BEN: &=in Now every bit of that concrete came down in individual eight-cubic-yard bucketloads . 211010_215743 *BEN: &=in Eight cubic yards of concrete into one of these forms 215743_218384 &=in the smallest of which is twenty-two by twenty-five feet 218384_221163 &=in only filled that form up about three or four inches deep . 221163_224279 *BEN: (.) &=in So there goes that story you may have hea:rd 224279_226543 &=in that there are workers buried in the concrete here . 226543_228852 *BEN: (.) Couldn't possibly happen . 228852_230385 *BEN: (.) &=in But what they did bury in that freshly poured concrete 230385_233313 &=in was one-inch steel water pipe . 233313_235110 *BEN: (.) &=in They came down here in this lower cofferda:m 235110_237513 &=in &=lengthened and they built an i:ce plant . 237513_239354 *BEN: (.) Capable of making a thousand tons of ice a day . 239354_242284 *BEN: &=in They used that ice 242284_243653 to chill the water 243653_244716 &=in that they forced through that pipe in this newly placed concrete . 244716_247705 *BEN: (.) &=in As concrete ha:rdens 247705_249241 or cures as we call it 249241_250501 &=in it produces heat . 250501_251867 *BEN: (..) The more you can control that heat 251867_254000 &=in the better job of curing you're going to get . 254000_256033 *BEN: (.) &=in So they used the chilled water method 256033_257910 of taking that cold water 257910_259011 &=in forcing it through that pipe in that newly placed concrete 259011_261695 &=in picking up some of that heat 261695_263338 &=in then carrying that heat out and away . 263338_265191 *BEN: (.) &=in They felt if they did not use a method such as this 265191_268036 (.) that it would've taken approximately &=in one hundred and fifty years 268036_271600 for the concrete (.) in the interior part of the dam &=in to cool down . 271600_274952 *BEN: (.) &=in So the system did work . 274952_276454 *BEN: (..) And then it hardened 276454_277555 and they remove these wooden forms 277555_279138 (.) &{l=X they &}l=X left voids . 279138_280185 *BEN: Vertically and horizontally these forms came together 280185_282380 &=in those voids were filled with grout . 282380_284248 *BEN: Under high pressure . 284248_285215 *BEN: (..) Grout being a mixture of concrete and water . 285215_287452 *BEN: (..) &=in When this is done 287452_288601 you have what we call a modified monolithic pour 288601_291376 &=in or basically a solid block of concrete 291376_293568 &=in which when completed would be six hundred and sixty feet across the base 293568_297237 &=in fourty-five feet across the top 297237_299245 &=in twelve hundred and fourty-four feet from wingtip to wingtip 299245_302187 &=in seven hundred and twenty-six point four feet high . 302187_305229 *BEN: (..) &{l=MRC Six point six million tons of concrete &}l=MRC . 305229_309063 *BEN: (..) That's enough concrete to build a two-lane highway &=in from New York City to San Francisco . 309063_313871 *BEN: (..) O:r 313871_314562 put another way 314562_315313 &=in a four-foot wide sidewalk from the North Pole to the South Pole . 315313_318459 *BEN: (.) &=in Then they had to protect that concrete a little bit 318459_320785 &=in the next thing they had to do then is build a couple of spillways . 320785_323728 *BEN: &=in As you got out of your cars or your busses this afternoon 323728_326260 you may have noticed those spillways . 326260_327816 *BEN: &=in Here they are 327816_328543 one on either side . 328543_329686 *BEN: (.) &=in What they did 329686_330808 is they came in here 330808_331507 and they blocked these diversion tunnels off in this area through here 331507_334400 (..) &=in closed these gates up here 334400_336328 &=in now this yellow part is forever under water . 336328_339126 *BEN: &=in Underneath that lake out there 339126_340500 and completely useless . 340500_341699 *BEN: &=in But they did incorporate 341699_343281 into the design of the dam 343281_344791 &=in the balance of those diversion tunnels 344791_346950 (.) &=in using these outer two as spillway tunnels . 346950_349996 *BEN: &=in Now these spillways were built 349996_351582 so that the top of the spi:llway 351582_353106 &=in is twenty-seven feet lower than the top of the dam . 353106_356066 *BEN: (.) &=in This assures us that n- any excess water coming down the Colorado River 356066_360121 &=in rather than overtopping the dam 360121_362260 &=in overtops these spillways on either side 362260_364772 &=in goes into the canyon wall 364772_366261 around the dam 366261_367225 &=in out in the river down below . 367225_368850 *BEN: (.) &=in Each one of these spillways is capable of handling &=in two hundred th:ousand cubic feet per second of water . 368850_374900 *BEN: (.) &=in That's the same amount of water that goes over Niagara Falls . 374900_377856 *BEN: (.) &=in &{l=X Falls &}l=X three times higher than Niagara Falls does 377856_380358 &=in time that water reaches this area down in here 380358_382653 &=in it is flowing at between one hundred 382653_384709 &=in and one hundred and twenty miles an hour . 384709_386764 *BEN: (..) &=in Okay we have protected the spillways 386764_389016 &=in now they had to get some water 389016_390548 (.) &=in ʔuh- into the power plant . 390548_392095 *BEN: (..) What they did is they built four intake towers . 392095_394626 *BEN: &=in Two on either side of the &=in river 394626_396714 on ledges above the river 396714_398037 &=in each of those towers that you saw out there in that lake 398037_400754 (..) are three hundred and ninety-five feet high . 400754_403271 *BEN: (..) Each with two-eleven-by-thirty-two-foot gates in them 403271_406446 &=in one gate near the bottom 406446_407703 one about half way up 407703_408784 &=in to let the water in . 408784_410212 *BEN: &=in The water then coming into the penstocks 410212_412273 &=in like the one we're standing over right now . 412273_414182 *BEN: (..) &=in This penstock 414182_415438 you can see on either side of us out here 415438_417204 &=in is three stories high 417204_418468 or thirty feet in diameter 418468_419879 made of two-and-three-quarter-inch steel boilerplate . 419879_422963 *BEN: (.) &=in Made in section twenty-two feet long . 422963_425360 *BEN: (.) Each section weighing approximately &=in a hundred and fifty tons . 425360_429277 *BEN: &=in Each of these twenty-two-foot sections is joined to the next section 429277_432248 &=in using pressure pins like thi:s . 432248_434021 *BEN: (.) &=in The water pressure in that penstock out there this afternoon 434021_436874 &=in approximately two hundred and thirty-four pounds per square inch . 436874_440220 *BEN: (..) &=in Okay we have the water this far 440220_442000 now we divert that into thirteen-foot penstocks or water pipes 442000_445162 &=in each one of em going to a turbine . 445162_446814 *BEN: (..) &=in The force of the water turns the turbine 446814_449295 which turns the rotor in the generator 449295_451099 &=in and generates power . 451099_452411 *BEN: (..) The water then coming on the tailrace 452411_454564 we saw it up there 454564_455530 &=in and going on downstream to be used at least (.) six more times 455530_458911 before it reaches the Mexican border 458911_460589 &=in to generate more power . 460589_461963 *BEN: (.) &=in Good clean (.) reusable non-polluting source of energy . 461963_465736 *BEN: (..) &=tsk &=in The cost of the project . 465736_468306 *BEN: (..) A hundred and seventy-five million dollars . 468306_470889 *BEN: (..) I say project 470889_472143 because that includes the building of the dam 472143_474060 &=in the building of Boulder City about seven miles up the road 474060_476854 &=in the highway and the railway from Las Vegas out here to the dam site 476854_480302 &=in and in southern California they built the All-American Canal 480302_483399 &=in which takes water to the people and the crops 483399_485842 (.) of the Imperial and Coachella Valleys . 485842_487935 *BEN: &=in This money was borrowed on a fifty-year term at three-percent interest 487935_491323 &=in and was paid off in fu:ll in nineteen eighty-seven . 491323_494174 *BEN: (..) The people who worked here 494174_496063 and they did work twenty-four hours a day 496063_497806 &=in average twenty-four-hour work force was about thirty-five hundred men . 497806_501208 *BEN: (.) &=in The most they had at any one time was when they were pouring concrete 501208_504748 &=in fourty-three hundred men . 504748_506385 *BEN: (..) &=in The laborers on the job made fifty cents an hour . 506385_509793 *BEN: (.) &=in Highest paid man on the project was a power shovel operator 509793_513058 &=in at a dollar and a qu:arter an hour . 513058_515007 *BEN: (..) &=in Out of each man's paycheck 515007_516603 the contractor did deduct each day 516603_518832 &=in a dollar and sixty cents . 518832_520771 *BEN: &=in Because the contractor was feeding 520771_522825 &=in and housing the men in Boulder City 522825_524877 &=in and taking them back and forth out here to the job site . 524877_527524 *BEN: (..) They did have ninety-six (.) industrial deaths . 527524_531020 *BEN: (.) The biggest single category of death was classified as falling material . 531020_534561 *BEN: &=in Basically falling rock . 534561_536187 *BEN: (..) But they did have some killed by explosion 536187_538607 &=in some by drowning 538607_539777 some by electrocution 539777_540995 &=in and other types of accidents you might expect to have . 540995_543769 *BEN: &=in On a job of this magnitude . 543769_545348 *BEN: (..) They did complete the project 545348_547457 two years ahead of schedule 547457_548651 and under budget . 548651_549663 *BEN: &=in Started in early nineteen thirty-one 549663_551606 &=in completed in late nineteen thirty-five . 551606_553783 *BEN: &=in Just twelve days short (.) of five years . 553783_556139 *BEN: (..) &=in Do I have any questions . 556139_558082 *AUD: (..) What's this overhead pipe here X . 558082_560585 *BEN: &=in The overhead pipe . 560585_561630 *BEN: &=in That's the fresh air pipe . 561630_562837 *BEN: (.) &=in (..) In the summerti:me 562837_564928 &=in the temperature of the air outside gets to be as high as a hundred and twenty degrees . 564928_567904 *BEN: &=in So they bring that fresh air i:n 567904_569449 &=in and they pass that fresh air over a sump at the base of the dam 569449_572377 &=in the water in that sump is a constant fifty-three degrees . 572377_575148 *BEN: &=in It cools that air down to between sixty-eight and seventy-two degrees 575148_578530 &=in then they force it back throughout the dam . 578530_580516 *BEN: &=in So it's ʔair-conditioning without refrigeration . 580516_582699 *BEN: Like a big evaporative cooler or swamp cooler . 582699_584650 *BEN: (..) Any other questions . 584650_586590 *BEN: (..) Yes . 586590_587344 *AUD: (..) U:h 587344_588612 during the uh (..) earthquake this morning 588612_591056 do you have any sensors down here 591056_592275 that (.) measure any kind of movement 592275_594004 o:f (..) str⌈uctur⌉:es . 594004_595885 *BEN: ⌊ &{l=X Right &}l=X ⌋ . 595186_595574 *BEN: (..) Yes . 595885_596524 *BEN: (.) W- v- we have several things . 596524_597836 *BEN: (.) First place we have three seismographs throughout the dam . 597836_600112 *BEN: &=in We recorded those 600112_601070 but nobody down here felt em . 601070_602219 *BEN: &=in But we do have sensors 602219_603664 built right into the concrete 603664_604786 &=in any movement that concrete makes 604786_606431 (.) is measured and recorded . 606431_607860 *BEN: (..) And they had very little of it this morning . 607860_609850 *BEN: Very little . 609850_610593 *BEN: (..) Any other questions . 610593_612879 *AUD: (..) How far are you sending electricity . 612879_614699 *AUD: California ? 614699_615337 *BEN: (.) Okay . 615337_615836 *BEN: (.) Fifty-six percent of our power goes to southern California 615836_618470 &=in twenty-five percent of it stays in Nevada 618470_620321 &=in nineteen percent of it goes to Arizona . 620321_622490 *BEN: &=in What the government did 622490_623682 is they got together the delegates from those three states in nineteen thirty . 623682_626909 *BEN: &=in To allocate the power that would be generated here when this dam was completed . 626909_630226 *BEN: (.) &=in California was growing very fast at that time 630226_632697 so they asked for and got most of the power . 632697_634359 *BEN: (.) &=in But by the same token 634359_635872 Las Vegas 635872_636405 about thirty-five miles up the road here 636405_638021 &=in at that time 638021_639192 &=in was nothing but a watering stop on the railroad . 639192_641474 *BEN: &=in No hotels 641474_642504 no casinos 642504_643396 &=in we asked Las Vegas to take five percent of the power we could produce here 643396_647165 &=in and they agreed to do that . 647165_648466 *BEN: (..) But that's all they get today . 648466_650096 *BEN: &=in Because that contract is good through the year two-th:ousand and seventeen . 650096_653777 *BEN: (.) &=in So all those lights . 653777_655098 *BEN: You see burning up there in Las Vegas 655098_656652 &=in comes from power from steam plants 656652_658674 &=in owned and operated by Nevada Power Company 658674_660913 &=in using fossil fue:l . 660913_662480 *BEN: They get very little of &{l=X our &}l=X hydroelectric power . 662480_664520 *BEN: (.) &=in Okay folks 664520_665284 you can follow me now 665284_665896 I'm gonna lead us out of here . 665896_666791 *BEN: (..) &=THROAT 666791_669939 (..) O:kay 669939_673914 here we go folks . 673914_674692 *ENV: &=FOOTSTEPS_AND_AMBIENT_CROWD_NOISE . 674692_691867 *AUD: &{l=X Quite amazing &}l=X . 691867_692620 *BEN: (..) Y- yes it's a fantastic job they did down here . 692620_695470 *AUD: Yeah . 695470_695988 *ENV: &=FOOTSTEPS_AND_AMBIENT_CROWD_NOISE . 695988_716352 *AUD: About how many people are employed here . 716352_717837 *AUD: Now . 717837_718290 *BEN: (..) Right now there's about two hundred . 718290_720027 *BEN: (.) &=in That includes the security people 720027_721952 the guide force 721952_722579 the nursing staff 722579_723415 &=in the people that (.) run the computer room 723415_725709 the office force 725709_726450 as well as the people that work on the dam . 726450_727838 *BEN: &=in And that's a twenty-four-hour figure . 727838_729511 *BEN: &=in But that figure is becoming smaller every year 729511_732055 &=in because every year we are becoming more highly computerized . 732055_734900 *BEN: (..) &=THROAT 734900_736578 (..) &{l=F Okay folks 736578_739244 there's a tour group coming in 739244_740457 stay to your right please 740457_741533 stay to your right &}l=F . 741533_742369 *ENV: &=AMBIENT_CROWD_NOISE . 742369_756725 *BEN: &{l=F Stay to your right folks 756725_757699 tour group coming out &}l=F . 757699_758622 *ENV: &=CROWD_AND_MACHINE_NOISE . 758622_784850 *BEN: (.) Okay 784850_785125 if you would 785125_785472 right up this stairway 785472_786179 when you get on the balcony 786179_787005 wait for me on the blue couches on the balcony please . 787005_788896 *BEN: (..) Anybody needs the elevator it's available . 788896_792231 *ENV: &=CROWD_AND_MACHINE_NOISE . 792231_804481 *BEN: Anybody that needs the elevator it's &{l=X is &}l=X available . 804481_806287 *ENV: &=CROWD_AND_MACHINE_NOISE . 806287_826072 *BEN: (..) Come on . 826072_826495 *ENV: &=CROWD_AND_MACHINE_NOISE . 826495_845020 *BEN: &{l=X Come on then &}l=X . 845020_845559 *BEN: (..) Up the stairway if you can X . 845559_850932 *BEN: (.) &{l=P &{l=X Up the stairway . 850932_852085 *BEN: That's +/. 852085_852650 *BEN: (..) Up the stairs &}l=X &}l=P . 852650_855640 *BEN: (..) O:kay: 855640_861825 here we go . 861825_862522 *BEN: (..) &{l=VOX Hi &}l=VOX . 862522_868557 *AUD: (..) That was the (.) turbine over here 868557_876611 off to the si:de +... 876611_877331 *BEN: Yeah 877331_877560 that's the turbine runner . 877560_878230 *BEN: You bet . 878230_878583 *BEN: (..) That's a (..) computer design made of stainless steel 878583_881693 &=in it's designed in such a way 881693_883249 &=in there's one of em running at a hundred and eighty RPM 883249_885495 (.) it actually l:ifts that eight hundred tons up a quarter of an inch 885495_888255 &{l=X for &}l=X your main thrust bearing is the very top of this (.) u:h structure right down here . 888255_892565 *BEN: (..) This is the rotor . 892565_893770 *BEN: (..) The rotor and the (.) &=in runner 893770_897217 (.) have come out of our A-Seven generator 897217_899226 what happened we lost a water seal down there . 899226_901050 *BEN: &=in So we had to pull those out to fix that water seal 901050_903231 &=in they'll be replaced within a couple of weeks now . 903231_905412 *AUD: (.) &{l=X Oh I see &}l=X . 905412_906237 *BEN: (.) &=in That &=in rotor in that part of the shaft weighs five hundred and eighty tons . 906237_909707 *AUD: &=WHISTLE . 909707_910301 *ENV: &=AMBIENT_NOISE . 910301_935014 *BEN: &{l=FF Okay folks 935014_935764 if you will please 935764_936418 follow me now &}l=FF . 936418_937236 *ENV: &=CROWD_NOISE_AND_FOOTSTEPS . 937236_1035801 *X: (.) Hey ⌈ X ⌉ . 1035801_1036527 *BEN: ⌊ H:ow⌋: you doing ? 1036217_1037113 *X: Good . 1037113_1037603 *ENV: &=CROWD_NOISE . 1037603_1049257 *BEN: Okay folks 1049257_1049700 while we're waiting for the elevators 1049700_1050566 does anybody have any questions . 1050566_1051884 *AUD: (..) How long have you been doing (.) these ⌈ tours ⌉ . 1051884_1053848 *BEN: ⌊ About ⌋ five years . 1053548_1054469 *BEN: (.) About five years . 1054469_1055390 *BEN: &=in I've retired twice 1055390_1057011 can't stand &{l=X retirement so &}l=X 1057011_1057895 come back to work at a fun job . 1057895_1059013 *AUD: &{l=X Oh [% laugh] &}l=X . 1059013_1059483 *BEN: (..) Anybody have any questions . 1059483_1063091 *AUD: (..) Yeah 1063091_1065987 (.) Ben 1065987_1066489 (..) water comes down the center of the 1066489_1068298 (.) where your shaft is 1068298_1069478 (.) goes out the turbine . 1069478_1070622 *BEN: (..) No . 1070622_1071474 *BEN: Goes around the dam . 1071474_1072324 *BEN: Water comes into those towers 1072324_1073503 (.) goes around the dam 1073503_1074585 comes in from the side . 1074585_1075681 *AUD: Each individual turbine ? 1075681_1076873 *BEN: (..) Yeah ? 1076873_1077838 *AUD: The water drops in the center where the shaft goes in 1077838_1080174 then ⌈ goes down ⌉ . 1080174_1080831 *BEN: ⌊ No no ⌋ . 1080367_1080831 *BEN: (.) No . 1080831_1081318 *BEN: (.) It comes into what they c- +/. 1081318_1082437 *BEN: It comes in that thirteen-foot pipe 1082437_1083838 goes into what they call 1083838_1084740 &=in the (..) area of the wicket gate 1084740_1086976 (..) and there +/. 1086976_1087727 *BEN: And there's a (.) pipe around that wicket gate 1087727_1089640 &=in a:nd that pipe goes from a thirteen-foot diameter 1089640_1092269 down to a three-foot diameter 1092269_1093485 goes around that wicket gate ? 1093485_1094732 *BEN: (..) ⌈ Okay . 1094732_1095340 *AUD: ⌊ Right ⌋ ? 1095144_1095620 *BEN: &=in ⌉ It picks up speed . 1095340_1096445 *BEN: &=in By the time it enters that ap- +/. 1096445_1097839 *BEN: ʔuh goes out that aperture 1097839_1098688 that three-foot aperture 1098688_1099442 it's traveling at fifty-seven miles an hour . 1099442_1101163 *BEN: (.) &=in But that's what drives that big turbine . 1101163_1103023 *BEN: &=in It goes arou:nd the shaft . 1103023_1104752 *BEN: It doesn't go into the shaft area at all . 1104752_1106483 *BEN: (..) The wicket gate . 1106483_1108521 *BEN: ʔuh: All the water goes in through the wicket gate . 1108521_1110160 *AUD: (..) It's coming in (.) underneath . 1110160_1112528 *BEN: Yeah . 1112528_1112759 *BEN: &=in ⌈ The wick- +... 1112759_1113330 *AUD: ⌊ Perpendicular ⌋ . 1113043_1114039 *BEN: ʔuh Th- ʔuh well ⌉ . 1113330_1114039 *AUD: ⌈2 perpendicular to the &{l=X shaft &}l=X ⌉2 . 1114039_1115374 *BEN: ⌊2 &=in ʔand ʔuh ʔuh: yeah ⌋2 . 1114039_1115374 *AUD: ⌈3 The generator's sitting on top ⌉3 . 1115374_1116861 *BEN: ⌊3 ʔA- ʔi- okay . 1115374_1116085 *BEN: (.) The shaft is like ⌋3 this 1116085_1117081 and ⌈4 water's ⌉4 coming in like thi⌈5:s . 1117081_1118358 *AUD: ⌊4 Right ⌋4 . 1117194_1117481 *AUD: ⌊5 That's what I thought . 1118165_1118715 *BEN: &=in And then it goes ar⌉5ou:nd like this . 1118358_1119952 *AUD: Oh yeah ⌋5 . 1118715_1119184 *BEN: ⌈6 &=in and then out ⌉6 . 1119952_1120807 *AUD: ⌊6 Now that thing we saw ⌋6 down laying that- 1119952_1121502 uh 1121502_1121772 alongsi⌈:de ⌉ . 1121772_1122516 *BEN: ⌊ Okay ⌋ . 1122336_1122516 *AUD: with the uh 1122516_1123179 ⌈ looked like a ⌉ +... 1123179_1123566 *BEN: ⌊ That's a ⌋ 1123179_1123566 ʔuh: that's a r- turbine runner . 1123566_1124833 *BEN: We call . 1124833_1125307 *BEN: ⌈ Turbine runner ⌉ . 1125307_1126070 *AUD: ⌊ That- and that's ⌋ 1125307_1126070 is that is that 1126070_1126640 (.) kicked up on the side like that 1126640_1128138 the water . 1128138_1128709 *BEN: (..) No 1128709_1129278 (.) ⌈ it just (.) lays ⌉ (.) ʔit +... 1129278_1130390 *AUD: ⌊ Spinning it around ⌋ ? 1129524_1130139 *BEN: (.) Oh you mean the one d- on the floor ⌈2 down there ⌉2 ? 1130390_1131953 *AUD: ⌊2 Yeah ⌋2 yeah . 1131637_1132162 *BEN: No ⌈3 that's lay⌉3ing flat like this . 1132162_1133422 *AUD: ⌊3 X ⌋3 . 1132358_1132682 *BEN: and the water drives that around this way ⌈4 like this . 1133422_1135073 *AUD: ⌊4 &{l=X Oh you're right &}l=X XX ⌋4 . 1134761_1135574 *BEN: and drives the tur⌉4bine up there yeah . 1135073_1136194 *AUD: And that's down inside the uh 1136194_1137699 (.) ⌈ in the turbine ⌉ . 1137699_1138556 *BEN: ⌊ That's way down ⌋ +/. 1137844_1138556 *BEN: Yeah . 1138556_1138804 *BEN: ⌈ Way down in the turbine . 1138804_1139760 *AUD: ⌊ So it's in the turbine . 1138804_1139615 *AUD: And that's the ⌋ . 1139615_1140025 *BEN: Unhunh ⌉ 1139760_1140025 ⌈2 yeah ⌉2 . 1140025_1140223 *AUD: ⌊2 that's ⌋2 what's generat⌈3ing . 1140025_1140770 *BEN: ⌊3 Yeah ⌋3 . 1140653_1140990 *AUD: that's ⌉3 what's turning the wheel . 1140770_1141900 *BEN: Right . 1141900_1142120 *BEN: (..) Right . 1142120_1142575 *AUD: We were right on that . 1142575_1143225 *BEN: Right . 1143225_1143473 *BEN: (..) Okay folks 1143473_1145655 step right in the elevator please 1145655_1146927 (.) right on in 1146927_1147649 (..) step right in the elevator . 1147649_1150035 *BEN: (..) &{l=P Three 1150035_1152811 four 1152811_1153275 five 1153275_1153739 six 1153739_1154315 seven 1154315_1154852 eight 1154852_1155217 nine 1155217_1155684 ten 1155684_1156202 eleven 1156202_1156763 twelve . 1156763_1157261 *BEN: Thirteen fourteen fifteen sixteen 1157261_1159665 (..) nineteen 1159665_1161933 (.) twenty &}l=P 1161933_1162663 &=in alright 1162663_1163233 are you with them ? 1163233_1163949 *BEN: (..) &{l=P Okay &}l=P . 1163949_1165144 *BEN: (..) Okay I saved room for you . 1165144_1168977 *AUD: (.) All right 1168977_1169476 thanks a lot ⌈ &{l=X man &}l=X ⌉ . 1169476_1170071 *BEN: ⌊ You ⌋ bet . 1169905_1170294 *BEN: (..) Folks this does conclude your tour of the dam 1170294_1176186 (..) hope you enjoyed it as much as I &{l=X enjoying have &}l=X you 1176186_1178043 come back and see us again . 1178043_1179023 *BEN: &=in Have any questions on the way up 1179023_1180374 &=in ask Norm . 1180374_1181120 *BEN: &=in Bye-bye folks . 1181120_1182122 *BEN: (..) Okay 1182122_1185848 any more questions folks . 1185848_1187033 *AUD: (.) What's the (.) story with this tile . 1187033_1188782 *AUD: (..) Wasn't this created by somebody ? 1188782_1191029 *BEN: Yeah . 1191029_1191343 *BEN: (..) Folks 1191343_1191951 &=in the dam was built as a tourist attraction 1191951_1194009 as well as being very functional 1194009_1195223 &=in this terrazzo flooring you see 1195223_1196911 terrazzo is marble chips put down in concrete 1196911_1199221 &=in ground down and polished 1199221_1200618 &=in this terrazzo flooring was put in here by one It:alian family 1200618_1203790 by the name of Martina . 1203790_1204923 *BEN: (..) &=in Okay there's two and three-quarter acres of this uh &=in t- uh terrazzo flooring in the floor 1204923_1209439 &=in but the designs you see 1209439_1210986 &=in is what that Italian family saw ʔuh: 1210986_1213202 &=in and interpretated from &=in southwest Indian blankets and pottery . 1213202_1216622 *BEN: That's where the designs came from . 1216622_1217987 *BEN: (..) &=in Any other questions . 1217987_1220647 *AUD: (..) Are there just two elevators down 1220647_1223194 from these two shafts 1223194_1224151 that'll take you to ⌈ XX ⌉ +... 1224151_1225272 *BEN: ⌊ That's right ⌋ . 1224669_1225272 *BEN: (.) Two elevators down . 1225272_1226171 *BEN: Mhm ? 1226171_1226498 *AUD: The rest of it's just solid . 1226498_1227554 *BEN: Right . 1227554_1227933 *BEN: (..) &=in Well there are 1227933_1229428 &=in there are two miles of ʔuh: tunnels going this way across the dam . 1229428_1232428 *BEN: &=in They have a pipe gallery 1232428_1233848 &=in they have a drainage gallery 1233848_1235047 they have a +/. 1235047_1235446 *BEN: (..) a uh: (..) cable gallery 1235446_1237658 &=in and they have an instrumentation gallery . 1237658_1239447 *BEN: (..) And all those things are +/. 1239447_1240641 *BEN: &=in They (.) measure constantly the condition of the dam with that instrumentation gallery . 1240641_1244332 *AUD: (..) Y'all open seven days a week ? 1244332_1246508 *BEN: (..) Yeah . 1246508_1247288 *BEN: Mhm ? 1247288_1247691 *AUD: (..) Is it unusual to- 1247691_1248778 (.) to do the generator (.) uh (..) room (.) floor ? 1248778_1251376 *AUD: In something like this ? 1251376_1252082 *AUD: There's just +... 1252082_1252509 *BEN: Yeah . 1252509_1252839 *BEN: It it's (.) in fact 1252839_1253697 it was built during the depression 1253697_1254954 &=in ⌈ and they wanted to make it a tourist attra- ⌉ +... 1254954_1256648 *AUD: ⌊ &{l=X Make it make it worth talking &}l=X ⌋ . 1255357_1256648 *BEN: It was at that time the largest dam in the world 1256648_1258470 (..) they wanted to make it very nice 1258470_1259932 yeah 1259932_1260128 it's unusual . 1260128_1260830 *BEN: (..) ⌈ Usually ⌉ you just have con⌈2crete deck⌉2s . 1260830_1262714 *AUD: ⌊ Yeah ⌋ . 1261189_1261598 *AUD: ⌊2 I would ⌋2 +/. 1262174_1262537 *AUD: (.) ⌈3 Yeah ⌉3 . 1262714_1263158 *BEN: ⌊3 Yeah ⌋3 . 1262825_1263158 *BEN: (..) Yeah . 1263148_1263768 *BEN: (..) &=in (.) Any other questions folks . 1263768_1266845 *BEN: (..) Yes . 1266845_1267820 *AUD: (..) What are the chances (.) of a leak ? 1267820_1270809 *BEN: (..) Hm ? 1270809_1271522 *AUD2: &=laugh ⌈ &=laugh &=laugh ⌉ . 1271522_1272150 *AUD: ⌊ What are the ⌋ chances of a leak . 1271792_1273679 *BEN: &=in &{l=X Well &}l=X 1273679_1274222 (.) ʔuh it leaks all the time . 1274222_1275433 *BEN: &=in You see concrete's porous . 1275433_1277075 *BEN: &=in And because concrete's porous 1277075_1278362 there's water coming through at all times . 1278362_1279888 *BEN: &=in But that's good . 1279888_1281007 *BEN: &=in Because if &{l=X there're &}l=X no moisture in concrete 1281007_1283091 &=in it dries out 1283091_1284067 an:d (.) spalls and chips 1284067_1285190 an:d (.) turns to powder . 1285190_1286337 *BEN: &=in Wouldn't make a very good dam . 1286337_1287834 *BEN: &=in So as long as that lake is back there 1287834_1289450 forcing that water through the concrete at all times 1289450_1291713 &=in it keeps that concrete in a stage of what we call being green . 1291713_1294461 *BEN: &=in Green concrete's very strong . 1294461_1296504 *BEN: &=in So we have a good strong dam . 1296504_1298006 *AUD: (..) Say Ben . 1298006_1299347 *BEN: (.) ⌈ Yes ⌉ . 1299347_1299828 *AUD: ⌊ what's going ⌋ on up on the hill up here 1299565_1301000 &{l=X don't ⌈2 think it's uh &}l=X ⌉2 +... 1301000_1301819 *BEN: ⌊2 Okay . 1301222_1301415 *BEN: (.) That's a ⌋2 five-story parking garage 1301415_1303210 &=in and the new building is a new visitors center . 1303210_1305125 *BEN: (.) &=in The five-story parking garage will hold four-hundred and fifty cars . 1305125_1308047 *BEN: &=in Okay 1308047_1308797 the new f- &=in visitors center 1308797_1310101 &=in will have (..) three revolving theaters in it 1310101_1312483 (..) it'll have a (.) seating area for people going on tour 1312483_1315229 it'll have a museum 1315229_1316122 &=in the top deck of that building will be an observation platform 1316122_1319005 &=in we can look back at the dam in one direction 1319005_1320872 downstream in the other . 1320872_1321761 *BEN: &=in Now 1321761_1322510 when that's all done 1322510_1323352 &=in they hope to be able to f:igure 1323352_1324874 (..) to handle (.) between one point two and one point three million people a year . 1324874_1328386 *BEN: &=in Last year we had 1328386_1329672 (.) seven hundred and twenty-nine thousand eight hundred and eighty-nine people go through the dam 1329672_1333226 &=in but we had to turn people away 1333226_1334527 almost every night . 1334527_1335455 *BEN: (..) Just not enough time in the day 1335455_1336925 to get everybody through the dam that would like to see it . 1336925_1338492 *AUD: (.) Hmm . 1338492_1338951 *AUD: (..) Will it have any slot machines in it ? 1338951_1340707 *BEN: &=in No 1340707_1341401 ⌈ but it'd be a ⌉ good idea . 1341401_1342109 *AUD: ⌊ &=laugh &=laugh ⌋ . 1341401_1341675 *BEN: wouldn't it . 1342109_1342467 *AUD: ⌈ &=laugh &=in ⌉ . 1342467_1343242 *BEN: ⌊ &=in Pay ⌋ for this ⌈2 place⌉2⌈3: ⌉3 . 1342467_1343881 *AUD2: ⌊2 &=laugh ⌋2 ⌊3 &=laugh ⌋3 ⌈4 &=laugh &=laugh ⌉4 . 1343489_1344358 *AUD: ⌊3 When's ⌋3 ⌊4 comple⌋4tion on that (..) parking garage . 1343753_1345811 *BEN: (..) They figure between fifteen and seventeen months . 1345811_1348363 *BEN: (..) Yeah . 1348363_1348986 *BEN: (..) Okay folks 1348986_1350246 step right in the elevator please . 1350246_1351432 *BEN: (..) &=in R:ight on in . 1351432_1353263 *ENV: &=CROWD_NOISE . 1353263_1360792 *X: (..) &{l=VOX Everyone please fa⌈ce the front of the car &}l=VOX ⌉ . 1360792_1363552 *AUD: ⌊ It's gonna be seventeen m⌋ore months ? 1362405_1364195 *AUD: (..) Seventeen more months ? 1364195_1365359 *X: (..) &{l=VOX Everyone face the front of the car please &}l=VOX . 1365359_1368906 *BEN: (..) Ri:ght to ⌈ there ⌉ . 1368906_1374209 *X: ⌊ &{l=VOX Front of the ⌋ car please &}l=VOX . 1373907_1375459 *AUD: (..) Have they ever had to use the spillway ? 1375459_1377755 *BEN: Just a minute . 1377755_1378151 *BEN: (..) Okay folks 1378151_1381730 this does conclude your tour of the dam 1381730_1383102 I hope you enjoyed it as much as I enjoyed having you 1383102_1384684 &=in come back and see us again 1384684_1385794 have any questions on the way up 1385794_1387035 &=in ask Norm . 1387035_1387886 *BEN: (.) Bye-bye folks . 1387886_1388878 *AUD: Thanks Ben . 1388878_1389245 *AUD2: (..) Have they ever had to use the spillway ? 1389245_1392091 *BEN: Okay . 1392091_1392396 *BEN: (.) Folks 1392396_1392841 the question is 1392841_1393545 did they ever have to use the spillway . 1393545_1394985 *BEN: (.) &=in Yes . 1394985_1395884 *BEN: Just once in the history of the dam 1395884_1397098 and that was nineteen eighty-three . 1397098_1398382 *BEN: (..) &=in What happened that year 1398382_1400016 &=in is they had a very heavy snowpack in the Rocky Mountains 1400016_1402671 &=in (.) and that was followed by rain and hot weather 1402671_1404981 &=in which created a flooding condition . 1404981_1407106 *BEN: &=in We had more water coming down the Colorado River system 1407106_1410135 &=in than they could put through the power plant . 1410135_1411839 *BEN: (.) &=in Every reservoir in the Colorado River system was full to overflowing that year . 1411839_1415654 *BEN: (.) &=in On July second 1415654_1416957 (..) water overtopped our spillways out here . 1416957_1419065 *BEN: &=in Six days later 1419065_1420143 it was going over four and a half feet high . 1420143_1422053 *BEN: &=in And that went on for sixty-six days . 1422053_1424389 *BEN: &=in At the end of that time there was no damage to the dam 1424389_1427150 &=in or to the power plant 1427150_1428385 &=in but further on downstream where people had built in the floodplain 1428385_1431491 &=in they did have thirty million dollars worth of damage 1431491_1433955 &=in but no loss of life . 1433955_1435261 *BEN: (..) But that flood's what left that white line around the lake out there . 1435261_1438172 *BEN: (..) That white line indicates it was going over the spillways 1438172_1441268 &=in four and a half feet above floodstage . 1441268_1443383 *BEN: &=in It gives a false impression 1443383_1444828 and makes it look like the lake of the level is low . 1444828_1446745 *BEN: Or level the lake (.) of the low . 1446745_1448040 *BEN: (.) &=in Actually we're eight feet above normal 1448040_1450172 for this time of year . 1450172_1450999 *AUD: (..) Wow . 1450999_1452157 *BEN: (.) &=in Yeah we had a very good snowpack last year . 1452157_1454282 *BEN: (..) . 1454282_1455974 @End