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Home My WebLink AboutSusitna Hydro Project Watana Conrete Arch Dam 1981iJ~::-~~~¥~ ~·~:::.:-~:· .-¥AQ ·-• t @II n ~:; (> 0 SUSITNA HYDROELECTRIC PROJECT WATANA CONCRETE ARCH DAM OCTOBER 1981 i I r I, ~ :lj ' l ;. H i l l l l ,, i --~-,. ' D ,. ( ~~ Land Reservoir Main Dam Penstocks Power Intakes Powerhouse Tailrace Outlet Saddle Dam Switchyard Misc. Structures Access Diversion Service Spillway Emergency Spillway Tailrace Tunnel Rock Credit Total CONCRETE DAM AT WATANA ESTIMATE BASED ON SCHEME ($000) Jan 82 . 36,750 15,750 1,447,184 15,120 60,180 189,730 2,303 47,774 7,369 8,400 74,865 97,420 128,149 NA 6,815 NA 2,137,809 Camp, Constr. and Owner Costs 1.16 X 1.2 X 1.125 3,347,809 $3.3 Billion -------------__________ ...., __ 2A For ComQarison Same Same 1,184,944 Same Same Same Same Same Same Same Same 101,386 Same NA 13;107 (11,728) 1,874,099 2,934,839 $2.9 Billion -------------------·------- i I --· . 6Lts 1 +11u... flvclvoeJecf . ...:..r_;,;~e'--....::...P_,_r.lo..::. n .. ..y..l ~;:._-~ c.J-______ .._, J -JOB NUMBER. ____ _ FILE NUMBER_.--__ _ Calculations &\~·, 'trl· ... SHEET_. ._)_ OF Y BY p/1;·7___ DA-R_CT. 0 5 ~98, APP Wa ,'L DATEIO/?/f-; SUBJECT: [C)~/( If E TB 0 I} N /1/ W'~} /}Y;f- L()f!/ 0 J(p ?00· o/ Sctme St HElME ~~-:/JJ/ /lf.IJV./ ~ .ST I 1"'?/lTC tf#SP.O tJ/'V'v~,&t ~ Jf~j~'O~.,. ;~&oo J-#IY r:? ;<19 ~~ J t't/ /11/:'ffAI..!/tJ/?/ /(&-s e/< IJ o1 ~ /~-75""0 r/ .Jape /'1171/V £J/Jl~ ;; J9t;' z$~ v t,++7, cat-I /cf'¥ 7o/~ ;/..E=tzJ£ ~ Ck...J /s-/~0 V.-JC( /l'??e'- /OwE!< /IIIT/111& 6o /f'O ~ .Ja P'?'?e.... jPo we v AIJ r1; (.. /ffj' 7.30 .L Sa me.- /a ilro tt' ()v #~ 1-2 .Jo3 .., J;, me-Jo..tlclle /Jt< 1/17 47 7}~ .L' S?'t'm~ Jw; .fc h;_tJy-r/ 7 36~ ~- JAm!!-J~O() ...,.-- /11.1 ( 1 '5'-l?vf.t ~f'f'.( Jkn?c:_ ;fer f.JJ ?t;/~ ;---»me ... ,-£J1v.f r1 Jll n 97~r/-O v /01 ;:.~) \'L.J" w/"o I r t-• ~ /:2? /t;t·~ .J f', "' r~ "'P; I <A.·tj r v->~ ~e f;JJ:;·?; ~Jt hnr'/ ·M /d/ff tf J/J---' /3 /~/ l?oc !': Cr' ,~·+ /i/ll _,., // 7/i/ ' . i . . . I .... ,.,, \ J. ..... ., - . . i i . . I • L ti}~f2. %93 7 ' .I -> w a: ( ·. ;2 000 ---------·-·--------------..-·-'""'"""'""'--''""---'""' >Jt ......,_..,~,...,, .... _.."' • ..,~.~ '"'11'~40?!:1~=~-=·':;;.--: .. ---:;:-~·---·~:--· ... • :::=-4~~ W/Jli!AIIJ Co;UrlfE715 tJ/)M ~'\· ~ov,.,:< __ ··------0CT.05198·1/~~Ifl ,; 7 ;! ;1 S .. 'rJ /• ~/1, fi' < l dtY ,;? ;;;e J' .: ~,.~J L WATANA COMPARAT IV[ r.OST [STIMATE -COM~ION ITH15 JULY 1981 (JANUARY 1982 OOU.ARS) ITEM D(SCJUPT ION CONMON I Tt:MS -All SCHEMES lAND land Acquisition RLSl:RVOIR Reservoir ClParing 71Ji7 . f{c s T;;ct-t?/1~'1 ~ Excavate Rock Exmwate Ovo rburden f.xcavab~ Grout GallP.ry -Horizontal Excavate Grout Gallery -Vertical MArN DAM PLNSTOCKS POWER INTAKl:S SurfacP. Preparation -. -· l}l/f11 -{ 1//A'PST ~£.ur~5 Co~cret~ GrrnJt Gall~ry-Horizontal Concr~te Grout Gallery-Vertical Consolidation Groutinq Grouting from Surface Grouting from Adits Relief Dt·ains Rockbolts Grout Gallery Support Stnnl-Grout Gallery Low level Release Excavate Tunnr!l Concrete lim! Rockbolts Stm~ l Lim~ Excavatr. Rock Excavat~ Overburden Concreto Basn Slab Concrete StriJctures Reinforcing Steel Rockbolts Gates, ttc. QUANTITY :;?f>J'?F ~ ;J ~(}(} O()<J 600 01)0 12,f10fJ 2' zrJr)i "() {!) () rJ J' ;/50 OCJCJ 15,400 3fJO 474,1)00 93, orm 176,000 200 350 59,00fJ 20,000 531) 550 737,000 Jno,ono 23,0r:JO 7411)00 4,365 180 ------------·-------·- UNIT LS LS rwv cy C)' C)' cy sy cy cy cy Lr LF LF LS ton ton LS C)' cy ton ton cy cy cy cy ton ton LS ·~~ ~ _.. ,..,. ______ "" ON II PRICE $ 36,750,000 15,750,000 2Jt1t.J ~) 21 0.40 911 105 15.80 /5'0 250 475 63 53 63 3,150,000 3,.500 3,700 26,250,000 55 380 3,500 4,400 12.50 6.30 190 300 2,100 3,500 121,710,000 $fl1Hl TOlAL 36,750 15, 72_q_ ...... Page 1 of 3 $001) lllM TOTAL / 36,750 ·' 15,750 ~ (,..J'>!l-11" :? ''1 ••• 6CJ633 ..a1, 18h 5'"t J'OO ~ ,_. H; Ollilc ~7~ 1~080 231 ; 9 'I I IJif!1!J-/..t /;l17f'C70 _.. I I 3,050 143 29,062 4,929 11,008 3,150 700 1, 295 26,250 3,245 ~944 { 44-1 !aLL~ I I ~~ r./ j-~'I ;2)(; - 7,600 1,055 2,421) ~j)JJL~ 9,213 1,891) 4,370 22,200 9,167 630 12z7111 ., ,( I I I I J I l i ·I I I t f ! I l WATANA COMPARAT IV£ COST EST li~ATE -COMMON ITH1S (Cant 'd) ITEM DESf.RlPTJON QUANTITY POWLRHOUSE AND ASSOCIATlD ITEMS TAILRACE OUTLET Excavate Pownrhousc Vault Excavatc Draft Tube Excavate Surgr. Chambr-r E>.cavate Transformer Gallery t:>~.cavatc Rock lunnr::l Portal [xcavate Overburdrm Tunnc 1 Portal Excavate A~cess Shaft Excavate Cable & Transformer Shafts Excavate Accr.ss Tunnrl Concrete Substructure Pow~rhouse Concrete Supnrstructure Powerhouse Concrete Draft Tube Concretn Surqe Chamber Concrete Transformer Gallery Concrete Transformer Shaft Concreb~ Line Access Shaft Concrete Line Cable Shaft Concrete Line Access Tunnel Concrete Ar:cP.ss lunnnl Portal Support SteHl Acc~"'SS T unnrd Ror.kho 1 ts Powr>rhous•• /Draft Tube Rockbolts Access Shaft Rockbolts Cable Shaft Hockbolts Access Tunn~l Rockbolts Access Tunnel Portal Reinforcinq Steel Powerhouse Reinforcing Steel Transformer Gallery Reinforcinq Steel Surge Chamber Rninforcing Steel Draft Tube Turbines and Valves Cranes Generators Mnchanical/Cinctrical Equipment Au xi 1 iaq• Mcchonica l /F. I rr.t r ira 1 Equiproont Draft Tube Gates Architectural Powerhouse Auxiliary Gnnerators Excavate Rock Outlet Excavate Overburdtm Out let Concretn Basn Slab OutlBt Concrete Walls Outlet Reinforcing Stnel Rockbolts 201, nrm zo,onn 1nz,nnn 3B,fJiilO 3,7nn 11, nrm 10p91iJO 14,4'00 11?,4.11'1 41,Zfl0 zn,Gno 12,401) 30,500 10, '100 4,1100 850 1,91)0 9 ,,non 1~nno 400 310 100 60 34'1 10 3-,7110 650 1,850 750 37,1)'10 46,rl11n 2,200 700 120 150 UNJT cy cy C}' cy cy cy cy C)' cy C)' cy C)' cy cy. cy cy cy C)' cy ton ton ton ton ton ton ton ton ton ton LS LS LS LS LS LS LS cy cy ey cy ton ton ONI I PRICE $ 42 47 42 47 15 5.30 60 60 42 J15 381) 525 360 315 475 475 475 250 315 3,675 3,5!il1 3,50fJ 3,500 3,5no 3,500 2,100 2, 1on 2,11JO 2,1nn 28,3011,01)0 2,730,001) Jz,sso,ono 19,430,000 12, 61JO, onn 610,DOO 1,5BIJ,fJOO 3,150,000 15 5.30 230 315 2,100 3,500 1'fy77? ' ..... ''\\ 3vl-P OCT. o. 5 1981 Page 2 J $OIJII TOTAL 8,44Z 9411 4,284 1,786 55 59 741 900 5,n15 12,978 7,828 6,510 10,980 3,182 1,901} 404 902 2,.250 315 1,764 1 '005 351) 210 1' 190 35 7, 770 1,365 3,885 1,575 28,300 2, 730 32,550 19,430 12,600 610 1 ,sao: 3,150 555 244 506 221 252 525 $1l!)rJ' ITEM TOTAL 189,730 2,303 f f I t I \ [ ~ -.... - Page .3 of J WATANA COI1PARATlV£ COST ESTIAMTE -COMt.IDN lTE.MS (Cont 'd) -ONI T $oon $0()0 -------------------------------------------------------------------------nrrn~------~~--------Ym~----- HEM SADDLE DAM SWi.TCHYARD MfSCELLANEOlJS STRUCTURES & EQUIPt1ENT ACCESS/ROAD AIR STRIP SUBTOTAL DESCRIPTION Surface Preparation Rockfi! l filters Impervious Material E~cavate Overburden Slurry Trench [)f.cavate Switchyard Overburden Fill Surface Preparation Electrical Civil Works Recreation facilities Buildings and Grounds Permanent Operating Equipment Permannnt Access Road ~ermanent Bridges Construction Ar:r.ess Site Airstrip COM~ION I Tf.MS QUANT tTY UNIT 16,601) sy 120,000 C}' 18,000 cy 81,()00 cy 140, f)l')r) cy 7n,orm S)' 146,01)0 cy 146, rmo cy 35,01)0 sy LS LS LS LS LS 70 miles LS 15 miles LS PRICE $ TOTAl ITHt TOTAL 10.50 174 12.60 1 ,.512 15.80 285 1 f) .50 851 6.:m 882 565 44 207fJ 47,774 4.20 613 4.20 61J 10.50 368 4,200,IJIJI) 4,200 1,575,000 1,575 7,369 1,0.50,000 1 ,osn 4,200,000 4,2nl1 3,1 on, ooo 3,150 8,401) 6311,000 44,10fJ 21,000,000 21,000 231,0011 3,465 6, JIJO, rmo 6,Jno 74!865 J:;:6 ~ iJ ' 1 w:. SJJf?/IE 7!iME- 5fif'1F- 5f}!'l£ IJrut D~scription Unit Price Dlvnrslon/Cofferdams (~cavatc Roc~ Portit cy 15 E•cavatn Tunnels cy 55 Concrete Liner at Portals cy ~60 Concrete Liner Tunnel cy 250 Concrete Inlet Port a I Hr.adwa t1 ~ I C)' 261') Concrete Inlet Portal Pir.r C)' 29.5 Concrete Outlet Hcadwa I J cy 261') Concrntn Plugs cy 51)() Upstr~am Cofferd~m r.y 4.20 Downstruam Cofferdam r.y 7.35 Dr.watnring LS 3,675,1100 Cutoff LS 6,825,01')1') . Reinforcing Steel Ton 2,100 1 I ' I Rockbolts Tunnels Ton 3,500 Rockbolts Portals Ton 3,500 I I Rock Surface Treatment sy 15.80 Support Steel Ton 3,675 Gntr.s, F.tc. LS 4,6fJrJ,OOO I I SlJOTOTAL DIVCRSlON/ COFTF.RD/\HS WAT COHPARAT fVE COST EST IM .).JL 'f 1981 (JANUAI Scheme £A fJuantity $1')1')() 290,000 $ 4,3.50 ~· ~ ::J ~ ObO 4,21111 1,092 . ~ .14;-9fJII 17?10 17, 2n0 4,472 6£10 177 '7, 500 1,951') Zfl,OfJfl 1 f), I'Jf)O 3, 140,01')0 13,100 125,0110 919 3,675 c4f ~.--. i~'o e fPfl.111 ~ 1 6,82.5 ~ .~ ~ :J.'J/5. '(""41) ;1#1' 1$"30 125 430 2, 700 43 ~ ~ Li?:l(, . 4,600 ....... ~ . :!'. -~uo_ . . . '~ I) /):J/A J J £ t:) QtA/Jp/ lo o f /ISO. I \ l I t I I ~~~, 'J.. .ANA .. e OCT 0 5 1 ... ~.\ • . 981 ' .. \~ l.OHPA~ATlV£ COST £STIMATE -NON-COM~ION Hf:MS (r.ont 'd) Unit Service Sg!Jlway E~cevate Rock cy £xcsvate Ovnrburden cy Concrete Halls Form~d Onu face cy Concrete Walls formed Oath faces cy Concrete Slab Approach Concrt~te Slab No forms Concrete Slab formed One face Concrete Slab formed Both faces cy Concrete Gob~/Chub~ formed One Sirin cy Concrete Gate/Chute formed Both Sidns cy Concrete Structure No forms cy Concrete Structure Formed cy Concrete Oridqe cy Concrete Lower Piers Bridge cy Concrete Lower Bridge Dock cy fleJnrorclng Steel Ton Rockbolts Ton Un~t Price '17 6.:m 260 200 190 no 19'0 zon 2.9'5 315 210 250 600 295 5011 l, 10f] 3,500 :Jcheme lA Quantity $000 1,567,200 26,642 1,301,000 8,196 32,600 8,476 19,1 ()0 5,348 2t9()0 .551 79,600 13,532 2,100 399 15,500 3,100 2,500 730 . 5,100 1,607 . ' 2,100 441 I 11,400 2,850 2,150 1,290 NA NA NA NA 5,896 12,382 1j0f'JO 3,500 J UJIZEk L t_k. A .• , __ __;;_, ~¥ WATANA CUMPARAT IV~-: COST EST 111ATE .. NON-COMMOt-.l JTI:MS (Cont 'd) Unlt Scheme ZA I Dnscription Unit Prien Quantity $O.QL_j Gntos LS 4, 500 . Dental Concrcl:.c LS 4,ano Grouting LS 2,100 Winterization LS . I ~ 7, or:m A lltJvium Removal cAt Above Water Level cy 760,000 5,320 A 1 luv ium Rnmova l J Below Water Lnvel cy 17 860,000 14,620 i Additional Haul Roads Mile 40,000 2 an Sur for:n T rcatmont Vl!rtical sy 15.80 17,000 2741 Surfncc lrr.atmcnt I Horizontal sy 10.50 38,400 403 SUUTGTAL S[RVlC[ ~~ \ SP li.L\~AY G~ [mcrgnncl SEillwax f.>.cevatc Rock cy 1.7 NA f.xcavate Overburden cy 6 .. 50 )/It NA Place ruse Plug cy 6 NA SUBTOTAL D~ERGENCY SPILLWAY - WATANA ••-, ~F; (•,,"··' ocr. o s 198:f COHPARATIVf. COST ESTIMATE-NON-COMMON lTEHS (r.ont'd) Un~t Description Unit Price T ai 1 rncr. T,•nnnl f.xcavate Tunnc ls cy 51) Concrete Linn Tunnels cy 275 Reinforcing Steel Ton 2, 1.01) Rockbolts Ton 3,5011 Support Steel Ton 3,675 SUBTOTAL TAILRACE TUNNEL Credit for Use of Rock in Dam cy a TOTAL NON-COHMON llEMS I I Scheme ·2A Quantity 97,200 14,850 150 400 590 1,466,000 $0fl0 4,860 4,004 -S?.S:-14 ... 1722 315 . -- 1,6BO 2!168 ~ ~ -<11, na: ~ttf - { ! 2 .s-; 2 7 ~ 2 12~ /61 871 I 12 7 • . / \. '_r:-\ ~ .... , ,~.-.~-· .... """"~~ ... "" ... "'"' ......... ,..,.------~·--.... ~~ .. OFFICE MEMORANDUM . TO: See Distribution FROM: James R .. Pl unnner CD w H--lf1t0ft- Date: January 16, File: P5700.07D09 1982 SUBJECT: Susitna Hydroelectric Project Task 9 Estimating/Takeoff ·Assumptions cc: D .. MacDonald J. Lawrence F. Toth J. Hayden R. Lang R. Ibbotson R. Beal D. Lamb D. Meilhede N. Bond The following assumptions have been developed for use on the Susitna Hydroelectric Project and wi11 be used for the Feasibility Study Estimata: 1. Concrete Mix-For Sizing of Batch Plants - -Nominai 4,000 psi mix (28 day) -Ratios: Water/cement 0.51 Aggregate/cement 5.74 -Weight lbs/cy: Water Cement Fine Aggregate Coarse Aggregate 2. Reinforcing Steel G)~ti/Et"Z.JI S{..r; 13S -Structural slabs & beams -Structural walls -Shotcrete mesh (6") -Shotcrete mesh (9") -Concrete in underground caverns 275 540 1,250 1,850 -Devil Canyon main dam & thrust blocks ~ \b~/cy 1CO lbs/cy 80 lbs/c.v 80 lbs/cy or 1.48 lbs/sf 60 lbs/cy or l.66 lbs/sf 100 lbs/cy 7 lbs/cy A review of these items by the project designers has been requested. 3. Steel Mesh Steel mesh (safety protection) will be required for all unJerground work except grout and access galleries of 10 feet or smaller dia- meter.. Mesh wi 11 cover 100 percent of crown from spri ngl i ne to springlinee It is assumed that a mesh will be left in place in all concreted areas and that no additional mesh will be required as a separate item in these areas. This item will be taken off on a square foot basis. Pricing will include additional bolting for mesh supoort. Steel mesh will also be required for 100 percent of vertical or .rear vertical cuts above concrete structures. Pricing will be for complete installation on a square foot basis. 1/ I ~~--------------------------e.----~~--.................................... .. . . ....... ..... ~,_. -~~ ...... ~ -----...,.. .. ,,__ ___ .. ~-__ ....._,. ... ~-... Distribution Page Two January 16, 1982 4. Underground'Ro~kbolts (High.Yield~ Resin Grout) Underground rockbolts will be estimated as an "each" basis accord- ing to Schedule 1. Aboveground bolting will be taken off on a structure-by-structure basis. Generally 1 inch bolts by 15 feet long will be used in a 10 foot by 10 foot pattern for 25 percent of the exposed rock side slopes unless otherwise noted or shown on drawings .. 5. Underground Support Underground support will be estimated as shown on Schedule 2 on· a per ton basis. 6. Shotcrete Shotcreting will be estimated as shown on Schedule 3 on a square foot basis. 7. ~urface Preparation Surface preparation wi·ll be taken as a square foot item for the invert of all underground excavation. No surface preparation will be listed for inclined (wall) underground surfaces. Aboveground surface preparation will be taken on a square foot basis and be identified as horizontal (slab or invert) and inclined (walls) for all concrete contact areas. In addition, surface preparation quantities will be developed for contact areas of the fill dam shells and core/filters. 8. Dental Concrete & Overbreak 1~;11~~ )/o de/7-fal COre//7 ' A Concrete will be estimated except under the main Watana Oamn(l cf/sf contact area). The concrete overbreak allowance will include any dental concrete needed elsewhere. As previously developed, this overbreak allowance is as follows: Aboveground & Major Underground-- Horizontal (Slab) Surfaces -1.5 cf/sf concrete contact area Inclined (Walls) Surfaces -1.0 cf/sf concrete contact area Tunnels--- 0.5' Add·itional Thickness for Walls & Slabs 9. Penstock A line item for consolidation grouting and contact grouting (behind liner) will be developed. DM:dmb R. Plummer · Attachments /2-· .... -., (~ ~T~~ ' • .l*t tl OFFICE MEMORANDUM TO: Dave H. MacDonald FROM: James Ra Plummer SUBJECT: Susitna Hydroelectric Project Concrete ·r4il'_ Design ___ _ Dare: January 20, 1982 Fn~: P5700.07.09 'Reference should b~ given to your memo of Januaty 15, 1982. 1 -Arch Dam Concrete mix design for Devil Canyon arch dam shall be: .. · a) Strength: 5,000 psi at 90 days b) Cement: Low Heat, Type IV. c) Water Cement Ratio: .40 d) Maximum Agg~egate Size: 311 The estimate shall also be based on: a) Lift Height: 5' b) Joint Spacing: so• a1ong the length·of dam fall width · of arch dam · c) Reinforcing Steel:. 7 lbs/cy 2 -Other Structures Please refer to our memo dated January 16, 1982, attached. JRP:dmb Attachment cc: F. Toth R. Lang R. J. Lawrence J. Hayden R. Ibbotson D. Lamb N. Bond / James R. Plummer I)