HomeMy WebLinkAboutT - HBC AEA Estimate for DesignHUMPBACK CREEK HYDROELECTRIC PROJECT (FERC NO. 8889)Construction Cost Estimate SummaryTunnel and Intake & Diversion DamNotes: 1. Based on Dick Freeman's estimate dated Sept 24, 2008 and edits by JHR, Sept 25, 2008.2. Six day weeks with 10 hours per day assumed through out project60 = assumed hours per week (6 days x 10 hrs per day)LABOREQUIPMENTMATERIALS TOTALNo. Itemunit of measureduration (wks)No. of CrewHours Man-hours Rate/hr Total Qty Rate Weeks Total Qty Rate Totalbold = cp $62.001 Construction Camp $572,880 $212,400 $208,608 $993,888Description: Includes maintenance of camp by 4 men with overlapping schedules to provide continuous coverage. They are involved in camp setup directing activies during mobe and demobe.Labor - 4 men working 6-10s for 36 wks with overlapping schedules mhr 38.5 4 2,310 9,240 $62 $572,880Trailers - living, dining, supplies ea12 $200 36 $86,400Food, living allowance - $50 day / man for cummulative man-wks LS 32,9771 $206,108$206,108Motor boat for pesonnel transport including fuel1 $1,000 36 $36,000Cordova temporary moorage $2,500Landing craft / barge for materials transport from Cordova including fuel1 $2,500 36 $90,0002 Mobe on Site$24,552 $8,900 $4,910 $38,362Description: Preparation of laydown areas and construction camp near the CEC bunkhouseLabor - 10 men working 5-8s per week (=6.7 men working 6-10s) mhr16.6 60 396 $62 $24,552Loader - 966ea1 $3,000 1 $3,000Excavator - 315ea1 $2,500 1 $2,500Flatbed trucksea2 $1,700 1 $3,400Lumber, plumbing, laydown dunnage (allow 20% of labor) LS1 $4,910$4,9103 Site Access$19,939 $4,690 $3,994 $28,623Description: Create temporary creek bed access. Install highlines. Install pioneer road to right abutment above intake.Labor - 8 men working 6-10s mhr0.678 40 322 $62 $19,939Dozer - D8ea1 $6,000 0.67 $4,020Pickup truckea1 $1,000 0.67 $670Chainsawea2 $1,000 $2,000Culverts, flagging, geotextile (allow 10% of labor) LS1 $1,994 $1,9944 Left Abutment Stabilization$44,640 $47,200 $15,364 $107,204Description: Stabilize left abutment, excavate approx. 300 cy of loose strata and stabilize with rock bolts (say 30, 1" dia anchors req'd)Labor - 7 men working 6 - 10s mhr 2 6 120 720 $62 $44,640Dozer - D8ea1 $6,800 2 $13,600Powder truckea1 $1,800 2 $3,600Loader - 966ea1 $5,000 2 $10,000Crane - 60 ton with 60' beam and man basket ea1 $10,000 2 $20,0006' Chain link meshlb3200 $2 $6,400Rock boltsea90 $50 $4,500Safety gear - scaffolds, ropes, etc. (allow 10% of labor) LS1 $4,464 $4,4645 Downstream Tunnel Portal$44,640 $70,800 $11,864 $127,304Description: Excavate rock slope at 1:4 (h:v) and remove 300 cy of rock. Stabilize with rock bolts (say 20, 1" dia anchors req'd). Bed material (__cy) removed to get down to final grade. Assume bed material stable at 3:1 slope. D/S tunnel portal extends to TSTA0+15.Labor - 7 men working 6 (10) hour days for 7 wks mhr 3 4 180 720 $62 $44,640Dozer - D8ea1 $6,800 3 $20,400Powder truckea1 $1,800 3 $5,400Loader - 966ea1 $5,000 3 $15,000Crane - 60 ton with 60' beam and man basket ea1 $10,000 3 $30,0006' Chain link meshlb3200 $2 $6,400Rock boltsea20 $50 $1,000Safety gear - scaffolds, ropes, etc. (allow 10% of labor) LS1 $4,464 $4,4646 Tunnel$156,240$153,300$164,100$473,640
HUMPBACK CREEK HYDROELECTRIC PROJECT (FERC NO. 8889)Construction Cost Estimate SummaryTunnel and Intake & Diversion DamNotes: 1. Based on Dick Freeman's estimate dated Sept 24, 2008 and edits by JHR, Sept 25, 2008.2. Six day weeks with 10 hours per day assumed through out project60 = assumed hours per week (6 days x 10 hrs per day)LABOREQUIPMENTMATERIALS TOTALNo. Itemunit of measureduration (wks)No. of CrewHours Man-hours Rate/hr Total Qty Rate Weeks Total Qty Rate Totalbold = cp $62.00Description: Construct tunnel with permanent support working from downstream upstream to the intake structure. Upstream portal support included as part of the intake construction. Approx. 1250 cy of rock removed, transported and placed at spoils areas 1 and 2. Assume rock bolts and wire mesh installed during intially as tunnel progresses.Concrete and shotcrete assumed to installed primarily after tunnel is completed to intake. Tunnel extends from TSTA 0+15 to WP 2 on intake Grid Line 5, approximately 337 feet. Assume 10 ft per day to build tunnel with permanent rock bolts and mesh installed at the end of 6 weeks. An additional week is assumed for shotcrete placement.Labor - 6 men working 6-10s (may be double shifted to allow support construction) mhr76 420 2,520 $62 $156,2402 boom jumboea1 $2,500 7 $17,500Wagner scoop tramea2 $4,000 7 $56,000Compressor - 900 cfm ea1 $2,000 7 $14,000Generator - 200kwea1 $2,800 7 $19,600Vent fanea1 $400 7 $2,800Dozer - D8ea1 $5,500 7 $38,500Dry shack/officeea1 $200 7 $1,400Shotcrete machineea1 $500 7 $3,500Blasting capsea1500 $4 $6,000Powderlb8000 $2 $16,000Rock boltsea120 $50 $6,000Shotcrete CY375 $100 $37,500WWF for shotcretelb10000 $1 $10,0004" air supply pipeLF2500 $10 $25,0002" water lineLF2500 $10 $25,00010" fan lineLF2500 $10 $25,00020 Steel sets - (min 5% of length =17' at 3' c-c) lb6800 $2 $13,6007 Cofferdams and Flow Diversion$95,567 $100,075 $50,000 $245,642Description: Includes sheet pile u/s and d/s for cuttoff, diversion and flume maintenance.Flume constructed with wood and plywood.Labor - 12 men working 6-10smhr 3.67 7 220 1,541 $62 $95,567Crane - 60 tonea1 $12,000 2 $24,000Vulcan 2300s ham merea1 $12,000 2 $24,000Dozer - D8 (50% adjustment)ea1 $6,200 2 $6,200Excavator - 315 (50% adjustment)ea1 $3,000 3.67 $5,505Flatbed trailerea1 $3,000 3.67 $11,010Misc pickups (allowance)LS1 $5,000 3.67 $18,350Compressor - 600 cfmea1 $2,100 3.67 $7,707Generator - 60 kwea1 $900 3.67 $3,303Sheetpile - including walers and bracinglb72000 $0.50 $36,000Flume - includes struts and bracingSF5000 $2 $7,500Membrane linerSF2000 $2 $4,000Rock boltsea50 $50 $2,5008 Intake Excavation$211,928 $79,125 $44,295 $335,348Description: Includes sheet pile u/s and d/s for cuttoff, diversion and flume maintenance,stabilization of left abutement. Estimate 1000 cy bed gravel and 2000 cy of rock.Labor - 6 men working 6-10smhr6.339 380 3,418 $62 $211,928Excavator - 315 (50% adjustment)ea1 $3,000 6.33 $9,495Flatbed trailerea1 $3,000 6.33 $18,990Misc pickups (allowance)LS1 $5,000 6.33 $31,650Compressor - 600 cfmea1 $2,100 6.33 $13,293Generator - 60 kwea1 $900 6.33 $5,697
HUMPBACK CREEK HYDROELECTRIC PROJECT (FERC NO. 8889)Construction Cost Estimate SummaryTunnel and Intake & Diversion DamNotes: 1. Based on Dick Freeman's estimate dated Sept 24, 2008 and edits by JHR, Sept 25, 2008.2. Six day weeks with 10 hours per day assumed through out project60 = assumed hours per week (6 days x 10 hrs per day)LABOREQUIPMENTMATERIALS TOTALNo. Itemunit of measureduration (wks)No. of CrewHours Man-hours Rate/hr Total Qty Rate Weeks Total Qty Rate Totalbold = cp $62.00Diversion and care of water (lumber for modifications to flume)LS$1,0001" dia. x 15 ft Rock bolts54 $160 $8,6592" dia. x 30 ft Rock boltsea27 $1,283 $34,6369 Diversion Dam Excavation$100,440 $37,500 $7,500 $145,440Description: Includes sheet pile u/s and d/s for cuttoff, diversion and flume maintenance,stabilization of left abutement. Estimate 300 cy rock.Labor - 18 men working 6 (10) hour days for 5 wksmhr39 180 1,620 $62 $100,440Excavator - 315 (50% adjustment)ea1 $3,000 3 $4,500Flatbed trailerea1 $3,000 3 $9,000Misc pickups (allowance)LS1 $5,000 3 $15,000Compressor - 600 cfmea1 $2,100 3 $6,300Generator - 60 kwea1 $900 3 $2,700Diversion and care of water (lumber for modifications to flume)SF5000 $2 $7,50010 Intake/Diversion Foundation Grouting$44,640 $10,400 $5,400 $60,440Descriiption: Includes drilling 15 holes 30' deep, water test, pumping grout, hoses, piping, collarsLabor - 3 men working 5 (9) hour days for 2 wks mhr26 120 720 $62 $44,640Compressor - 600 cfm ea1 $2,100 2 $4,200Joy diamond drillea1 $2,100 2 $4,200Grout/water pumpea1 $500 2 $1,000Mix tankea1 $500 2 $1,000Grout - allow 1 sack / ft for 15 holes ea450 $12 $5,40011 Intake Structure$223,200 $307,920 $71,452 $602,572Description: Construct intake structure including upstream tunnel portal. Also work under this itenm to include embedded gate thimbles, jib crane sockets and trash rack embeds. Approx. 330 cy of concrete with a 1:2:4 mixLabor - 11 men working 6 (10) hour days for 5 wks mhr 6 10 360 3,600 $62 $223,200Generator - 60 kwea31 $900 6 $5,400Compressor - 66 cfm ea cp1 $2,100 6 $12,600Crane - 60 tonea1 $12,000 6 $72,000Mix truckea1 $5,500 6 $33,000Water truckea1 $2,500 6 $15,000Concrete pumpPour10 $600 6 $36,000Misc vibrators, saws, drills etc (10% of labor cost) LS1 $22,320 6 $133,920Form lumberSF20000 $0.50 $10,000Rebar - cut, bundled in town lb30000 $0.80 $24,000Cementton56 $90 $5,040Sandton132 $10 $1,320Gravelton216 $12 $2,592Additives/Curing (add 10% to all) LS1 $3,400 $3,400Trashrack with closure plates for dewatering lb$19,000Penstock Inlet Transition lb$6,10012 Diversion Dam$167,400 $137,740 $70,280 $375,420Description: Includes 5' lifts for each of two halves of dam. Approximately 10 pours. Special finish for d/s face for OGEE. Same crew used as for intake structure. Approx. 620 cy of concrete in a 1:2:4 mix.Labor - 11 men working 6 (10) hour days for 5 wks 5 9 300 2,700 $62 $167,400Generator - 60 kwea31 $900 5 $4,500Compressor - 600 cfm ea cp1 $2,100 5 $10,500Crane - 60 tonea1 $12,000 5 $60,000Mix truckea1 $5,500 5 $27,500Water truckea1 $2,500 5 $12,500Concrete pumpPour10 $600 1 $6,000
HUMPBACK CREEK HYDROELECTRIC PROJECT (FERC NO. 8889)Construction Cost Estimate SummaryTunnel and Intake & Diversion DamNotes: 1. Based on Dick Freeman's estimate dated Sept 24, 2008 and edits by JHR, Sept 25, 2008.2. Six day weeks with 10 hours per day assumed through out project60 = assumed hours per week (6 days x 10 hrs per day)LABOREQUIPMENTMATERIALS TOTALNo. Itemunit of measureduration (wks)No. of CrewHours Man-hours Rate/hr Total Qty Rate Weeks Total Qty Rate Totalbold = cp $62.00Misc vibrators, saws, drills etc (10% of labor cost) LS1 $16,740 1 $16,740Form lumberSF45000 $0.50 $22,500Rebar - cut, bundled in town lb30000 $0.80 $24,000Cementton110 $90 $9,900Sandton220 $10 $2,200Gravelton440 $12 $5,280Additives/Curing (add 10% to all) LS1 $3,400 $6,40013 Intake/Diversion Mechanical Equip. & Misc. Steel$22,320 $4,500 $193,000 $219,820Description: Procure and install all mechanical equipment for diversion dam and intake structure. Labor - 4 workers working 6-10s. 1.5 4 90 360 $62 $22,320Generator - 60 kwea31 $900 1.5 $1,350Compressor - 66 cfm ea cp1 $2,100 1.5 $3,150Jib Crane - 3 ton with sleeve type base embed, all controls etc. LS1 $60,000 $60,000Obermeyer weir - gate, abutment plates, anchor bolts, weir plate, etc LS1 $40,000 $40,000Exterior Sluice Gate (3' x 8') with embeds, seals and operators LS1 $30,000 $30,000Interior Sluice Gate (2' x 2') with embeds, seals and operators LS1 $5,000 $5,000Penstock Inlet Gate (6' x 5') with embeds, seals and operators LS1 $38,000 $38,000Metal doors for access and equipment spaces at El. 284 LS1 $5,000 $5,000Misc steel including ladders, gaurdrails, and stairs. LS1 $15,000 $15,00014 Penstock$133,920 $18,000 $380,000 $531,920Description: Includes supplying all materials except owner supplied 54" HDPE pipe and flange fittings. Labor, equipment and materials included for steel penstocks, valves, expansion joints, reinf conc thrust blocks, reinf conc downstream portal wall, door and misc. metal.Labor - 11 men working 6-10s6 6 360 2,160 $62 $133,920Generator - 60 kw1 $900 6 $5,400Compressor - 66 cfm1 $2,100 6 $12,600Saddles (steel, prefabricated) ea20 $650 $13,00054" Steel pipe (54"OD, 53.5" ID)lb$71,700Expansion Joint # 1 (54" std dresser coupling)LS$3,00054" Emergency Penstock Closure Valve with operators LS1 $120,000 $120,00054" steel pipe mitered bend with thrust rings for Thrust Block No. 12 (included above) lb0$0 $0Thrust Block No. 12 Reinforced Concrete (70 cy) CY70 $900 $63,000Steel eccentric reducer OD/ID transition: 54'/53.5" to 51.18"/50.68" LS$3,20054" HDPE Installation (owner supplied) LS$0Steel eccentric reducer OD/ID transition: 51.18"/50.68" to 42"/41.5" lb$4,30042" Steel pipe (42" OD, 41.5 ID) lb7400 $5 $37,00042" steel pipe mitered bend with thrust rings for Thrust Block No. 11 (included above) lb$0Thrust Block No. 11 Reinforced Concrete (48 cy) CY48 $900 $43,200Expansion Joint # 2 (42" sleeve type) LS$5,000Downstream portal wall reinforced Concrete (4 cy) CY4 $900 $3,600Metal door for downstream portal access. LS$1,000Misc steel for walkways and stairs. LS$12,00015 Controls, Power, SCADA$89,280 $92,000 $89,280 $270,560Description: Assume 4 electricians are required for 4 weeks. As place holder assume materials = labor cost.Labor: 4 electricians for 4 weeks working 6-10s.46 240 1,440 $62 $89,280Generator - 60 kw1 $900 4 $3,600Compressor - 66 cfm1 $2,100 4 $8,400Crane - 60 tonea1 $12,000 4 $48,000Flatbed trailerea1 $3,000 4 $12,000Misc pickups (allowance)LS1 $5,000 4 $20,000Say labor cost = materials cost$89,280
HUMPBACK CREEK HYDROELECTRIC PROJECT (FERC NO. 8889)Construction Cost Estimate SummaryTunnel and Intake & Diversion DamNotes: 1. Based on Dick Freeman's estimate dated Sept 24, 2008 and edits by JHR, Sept 25, 2008.2. Six day weeks with 10 hours per day assumed through out project60 = assumed hours per week (6 days x 10 hrs per day)LABOREQUIPMENTMATERIALS TOTALNo. Itemunit of measureduration (wks)No. of CrewHours Man-hours Rate/hr Total Qty Rate Weeks Total Qty Rate Totalbold = cp $62.0016 Test Commission Turnover$18,600 $23,000 $4,650 $46,250Description: Assume 5 workers, 2 electrians, 2 assistance, 1 iron worker for 1 week. As place holder assume materials = 25% of laborLabor: 5 men for 1 week working 6-10s.15 60 300 $62 $18,600Generator - 60 kw1 $900 1 $900Compressor - 600 cfm1 $2,100 1 $2,100Crane - 60 tonea1 $12,000 1 $12,000Flatbed trailerea1 $3,000 1 $3,000Misc pickups (allowance)LS1 $5,000 1 $5,000Say 25% of labor for materials and support.$4,65017 Site Clean Up and Demobilization $74,400 $21,600 $0 $96,000Description: Work will include removal of camp and laydown areas, revegitation of slopes and along roads, transport of materials and equipment from the site.Labor - 10 men working 6, 10 hr days mhr210 120 1,200 $62 $74,400Loader - 966ea2 $3,000 1.5 $9,000Excavator - 315ea2 $2,500 1.5 $7,500Flatbed trucksea2 $1,700 1.5 $5,100 SUBTOTAL A:36 $2,044,586 $1,329,150 $1,324,697 $4,698,43318 Contractor Management, Overhead and Profit / Risk$1,335,370 $0 $132,470 $1,467,840Description: These cost are estimated based on percentage set assides typically used by general contractors.Supervision - 25% of Labor base cost$511,147Overhead - 15% of Labor base cost and Supervision$383,360Profit / Risk - 10% of all above labor$440,864Profit / Risk - 10% of materials$132,470SUBTOTAL B: 32,977 $3,379,957 $1,329,150 $1,457,167 $6,166,27315% Contingency:15.00%$924,941TOTAL CONSTRUCTION COST ESTIMATED: $7,091,214