Responses_to_questions_0002.pdf

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Grand Coulee Dam Left and Right Powerhouses Bridge
Solicitation number
140R1022B0001
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This document contains questions and responses related to a solicitation for bridge crane replacements at the Grand Coulee Dam Left and Right Powerhouses. The Bureau of Reclamation is soliciting bids to remove the existing bridge cranes in each powerhouse and replace them with new cranes that match the size, scale, and character of the original equipment. The responses provide clarification on specifications, drawings, load requirements, testing procedures, and other details important for bid preparation. Key project specifics include replacing the cranes in pairs for each powerhouse while ensuring at least one crane remains operational, utilizing existing rail infrastructure where possible, and designing the new cranes to preserve the historical features and character of the original equipment.

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1. LPH/RPH Crane Replacement Responses to Questions

2. We request the Bureau provide the following information:

A. Floor Loadings for LPH/RPH to include the approach road, erection bay, Power operating floor.

Response: See drawings 222-D-7588, 222-D--2302 & 222-D-2230.

Both the LPH and RPH service bay load rating of 1,500 lbs/ft^2, and the generator bay is 1,000 lbs/ft^2. We do not know the load rating for the approach road.

B. All access road load ratings (DOT rating would be sufficient)

Response:

RCW 46.44.041: Maximum gross weights—Wheelbase and axle factors. (wa.gov)

C. LPH & RPH drawings:

-All Building drawings to include structural and concrete

Building Framing plan

Response: See Drawings Roof 222-D-8406, 8739, 8404, 7588

Floor details to include rebar and embedded items

-Crane drawings for Morgan and Whiting

Hoist details

Bridge Details :(These are required to calculate existing crane weights for removal)

Response: Crane Manufacturer drawings will be added

Existing Rail drawings and rail size

Response: See drawings 222-D-8322, -8323, -8495, -8321, ASCE 175# rails

Details for each rotor lifting device.

Response: See drawings.

https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fapps.leg.wa.gov%2Frcw%2Fdefault.aspx%3Fcite%3D46.44.041&data=04%7C01%7Cbprebo%40usbr.gov%7Cbebaff6c216b426081b808d9e0737dd6%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C637787608919704538%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=XqbHl6TFYIkOTIxEg1yh2QbS0nti1GpBOGJ5mDlyV1g%3D&reserved=0

-Electrification drawings to provide total length of wire to be replaced from each crane breaker to buss.

Response:

RPH cables from the UARS breaker to the bus bar: 2 bundles of 3 conductor cable, 1/C-350 MCM, actual listed length of 125 feet per cable.

LPH cables from the UALS breaker to the bus bar: 2 bundles of 3 conductor cable, 1/C-350 MCM, actual listed length of 120 feet per cable.

D. Rail specs for new rail options.

Response: Match existing rails, ASCE 175#. Alternative rail sizes would only be allowed if the crane rail survey determines there is no way the existing crane rails can be used or a submitted justification is submitted, reviewed and approved by Reclamation.

3. What are the requirements/deliverable for the crane rail survey:

Response: Provide scope and cost option for rail adjustments back to code conformance with CMAA, provide scope and cost option for full rail replacement. Separate all items per powerplant.

Deliverable is a report stating all aspects of a crane rail survey and deficiencies stated, citing codes, whether rails are safe to use or not.

Requirements of the survey are, but not limited to, inspection of the entire length of runway rail for abnormal or excessive wear to the head and sides, runway tiebacks, visually and physically inspect the entire runway length on both sides as well as the columns and runway girders, rail fastening system of loose damaged or missing hardware, rail gaps, runway splices and end stops, end stop bumpers, structural beams, columns and shelves and any attachment hardware, loose structural bolts.

Alignment

Response: Report tolerance variances compared with CMAA 70 rail tolerances

Elevation

Response: Report tolerance variances compared with CMAA 70 rail tolerances

Hardware conditions

Response: Note missing or damaged hardware

Non-Destructive Testing

Response: Visual document material losses or deformation of the rails

The contractor must be able to measure the crane span and ensure it’s in accordance with CMAA 70.

4. Load Test Equipment, weights, slings, etc:

A. Does the BOR intend for two separate testing systems to be supplied?

Two load tables –

Response: The same supplied test weights can be used for Left and Right Powerplants testing. This would be determined by the contractor to test all aspects of the cranes for commissioning.

1400 ton of weights

Response: See #6 It is simplest to supply one set of test weights to load test one bridge at a time, 350 ton * ~110% = approx. 385 ton of weights. Unless there is justification this is not enough weights to perform commissioning.

Slings

Response: Adequate rigging must be supplied to perform lifts.

B. The specifications calls for stackable concrete weights, are these weights limited on size? Did the BOR intend for these to be an Eco Block style?

Response: We do not have a preference in style. Water weights are not allowed. We will want weights that will provide adequate headroom to attach to the crane while also having a wide enough surface area to displace the weight of the stack over the service bay for load testing.

5. Can the BOR supply photos of the cranes and power house that would be germane to perform the work?

Response: Photos taken during the site visit are attached.

6. Does the BOR require that the tandem load test travel the entire length of power house to include over or near the turbines?

Response: No, do not travel load testing over or near units. The travel envelope can be shortened to avoid traveling over the units with load test. B30.2 has room for methods “as practical”. The full envelop travel can be performed with empty hooks and still meet testing.

7. In section 41 22 20 3.01 D it states, “Replace one crane per powerhouse at a time, providing temporary electrification to crane remaining in service.” However, the contractor cannot guarantee that a crane will be accessible of even operational throughout the scope of the project. Secondly the erection bay and configuration will not provide enough space to have two cranes parked in this area and one be operational. Any removal with 2 cranes parked over the erection bay would result in suspending construction loads over the adjacent turbine. The two cranes bumper to bumper are approximately 65’wide and the measurement from overhead door , handrail above turbine floor is approximately 65’.

A. If it was the intent to have one crane remain in place, there would still be an extended period of time when a crane is blocked in by another crane. This period of time could extend for nearly 2months, allowing for the commissioning of the first crane and removal of the last or vice versa.

B. There is no way to hop the cranes to ensure one crane is available and in service at all times.

C. The contractor requests that the government allow the contractor to fully remove both cranes following the successful commissioning at the factory of the cranes. This would provide for a lower risk removal or installation (no work of turbines) as well more cost-effective project.

Response: The intent for replacing one crane at a time and preference is to minimize any time without an available crane. Spec section will be modified to remove the statement. Coordinate with COR to schedule outage windows around other plant needs.

Cranes to be replaced in pairs with all crane outage work in one Powerhouse at a time. The government will allow the contractor to fully remove both cranes in a single powerhouse following the successful commissioning at the factory of the replacement cranes pair, and subsequent delivery of the cranes pair, and all ancillary components to GCPO. This would provide for a lower risk removal or installation ( no work of turbines) as well more cost-effective project. Bridge crane pair replacement in one Powerhouse to be fully completed and cranes fully tested and certified prior to the work of inactivation and dismantlement of the cranes in the other Powerhouse. GCPO to determine which Powerhouse to perform first with consideration of contractor's recommendation/request.

8. Max Loading Question: On the attached snippet, can you verify the max floor loading in the work area (large red box) and the blue hatched area? This is needed for removal reinstallation planning.

Response: The service bay has a load rating of 1,500 psf. El. 991 has a floor rating of 1,000 psf.

See Question #2 for more detail.

9. Bridge drive design – Div. 41 22 20-14, L 1 Bridge requires CMAA A-1 drive design. This requirement would appear to be in conflict with the requirement in paragraph T 14 controls, requiring “anti-skew” control. Would A-4 drive design be acceptable in order to comply with the anti-skew requirement?

Response: Yes, A-4 is the selected drive type, not A-1. Spec section will be updated accordingly.

10. Div. 41, part 2, 2.01 Bridge cranes, paragraph C-3, design features. Retention of historical character defining features. Can this statement be clarified further? Does the BOR want the cranes in left powerhouse to be designed to look like Whiting cranes and the cranes in the right powerhouse to look like Morgan cranes or can all 4 look alike? Are there specific features that the BOR would like to maintain in the new designs? Features such as open gearing on final hoist drives, hook block design, equalizing bogey design or 45 degree axle master car bearing design.

Response: Match existing color, size, shape and scale for each powerplant.

Salvaging Materials

Response: The only thing we ask to salvage from all the cranes are their historic name plates and one of the cab unit control panels (the oldest one). *

Character-defining features to consider when designing the new cranes:

Response: Maintain the scale and mass of the cranes in the powerhouse. New cranes may not need as much material, but consider matching its scale and style.

Exposed structure and framing. The exposed diagonals in the trusses, the exposed gear boxes and open ends of the cab are all key features.

Horizontal design features: Grating, railings, and other covers should maintain a horizontal type banding to contrast against the height and scale of space

11. Div. 41, part 2, 2.01 Bridge cranes, paragraph C-8, design features, span & hoist lift. This paragraph references a single drawing, 222-D-3504, for span and lift dimensions. Are the spans, lifts, and hook approaches the same in both powerhouses?

Response: See Drawing 222-D-3504; note references both Left and Right Powerplants.

12. Div. 41, 3.02B Testing; Is the lifting beam to be included in the final tandem load test for each powerhouse? Are we to apply 875 tons of stackable weight to the lifting beams then for these tests? a.

Are water weights acceptable for the testing?

Response: Water weights are not acceptable for use in the powerplants. The lifting beam can be made available for final tandem load test if requested. Testing of the lifting beam is not specifically required as part of the scope. The amount of weights provided should be dictated by the contractor’s procedure in successfully meeting all commissioning criteria.

13. Div. 41, part 3.01 paragraph B. states; “Work to replace crane shall not proceed until entirety of replacement crane equipment has been delivered on site.” Does this include the demolition and/or removal of the existing crane(s), or is it the intention of the Bureau to simply hold installation until the entire new crane is delivered to the site?

Response: The intent is to mitigate risk of longer than expected outage windows due to equipment not being on site from shipping delays, etc. Because of this, removal of existing cranes will need to wait until the new crane equipment is delivered on site in entirety.

14. Can we use the bridge cranes to set mobile equipment in powerhouse?

Response: Yes, follow formal requests for 01 14 10 Use of Site and 01 54 00 Construction Aids spec section procedures. Coordinate with COR in scheduling dates of use. Any red tagged equipment cannot be used.

15. Does powerhouse have to have a crane operating at all times during removal process? That will be an issue in A powerhouse, space is limited and both cranes will not fit in maintenance area at one time.

Response: Coordinate outage windows with needs of the powerplant with formal approval process. Refer to Question 7 response for more detail.

16. Can we get floor loading allowable PSF for both the generator floor at the 951 level, the 1015 level maintenance floor, and outside both powerhouses?

Response: See Question #2 for more detail. I think you meant to say el. 991, not 951. El. 951 is the turbine gallery and has a load rating of 300 psf. Load ratings of el. 1015 and 991 have been answered in question 2.

17. Will removing roof section to gain access be an option if needed?

Response: Yes. Proper review and approval process will be followed along with returning the roof to original condition or better. See specification revision.

18. Will removing cross bracing between trusses to gain better access to bridge cranes be allowed?

Response: A structural analysis must be submitted detailing the temporary modifications, duration, and returning modifications to original condition or better.

19. Will there be a Laydown area for placement of scrap materials to be removed from site that won’t require badging access?

Response: This would be coordinated with the COR. The construction office area just outside the WPP guard shack might be an option for the RPH. There is a parking area just outside the LPH guard shack that may be available. These possible options would need to be approved by the plant supervisors and superintendent; available space is dependent upon other ongoing projects at that time.

20. Will there be available warehouse or storage on site for materials that need to be out of weather?

Response: Yes, space is limited and must coordinated with COR. "SW corner of the CEG lot at #1 Marina

Way, Coulee Dam, WA. 99116". Available space is dependent upon other ongoing projects at that time.

21. Will job trailers be allowed inside secure area near work area?

Response: This will be determined once the onsite works starts. Available space changes but typical location for contractor trailers is SW corner of the CEG lot at #1 Marina Way, Coulee Dam, WA. 99116.

This must be coordinated with the COR.

22. Will a conference room be provided for meetings and task planning?

Response: No, government office space is not provided for contractor use.

23. Will there be secure WIFI connections inside job site area for electronic communications?

Response: No, contractor is responsible for wireless connections.

30. EXCEPTION – “All electronic components for installed control systems must be rated for 200 deg F.” – This is an unrealistic temperature rating.

Response: Temperature range will be updated. Ambient temperature at the upper portions of the powerplants can be up to 140F.

31. Section 2.01 E 9- “Machinery enclosures: steel.” – What machinery enclosure are they referencing?

Gearbox housing?

Response: This is referring to any open gearing similar to the current hoist gearing that have steel enclosures.

32. Section 2.01 L 1- EXCEPTION - “Provide CMAA 70 type A-1 bridge drive arrangement” – need to design the new cranes to have an A-4 arrangement for the skew control requirement.

Response: See Question #9 for more detail. A-4 is the selected drive type, not A-1. Spec section will be updated accordingly.

33. Section 2.01 V- Do the load cells need to summate the total load when cranes are operating in tandem with the 650-Ton load beam arrangement?

Response: Yes, display total load on the HMI along with loads for each individual hook. For radio transmitter, at minimum provide ability to display all or toggle through each hook load verifying each are within its capacity.

34. Section 2.01 X 1- Electrification in accordance with CMAA 70 Class A service? – Why not CMAA Class D?

Response: Specification details will be updated for service Class D.

35. Section 2.01 X3 a- Drawings show open rail runway conductor bar, this section discusses an enclosed bar system.

Response: Existing conductor bar system will be replaced. Provide enclosed bar system for new cranes.

Drawings are information only. See 41 22 20 2.01 for specific requirements of conductor bar system.

36. Section 2.01 C C- How many of each type of outlets and location?

Response: At least two 120V outlets for each cabinet, at least two 120V outlets in each cab, one 600V outlet near the cabinet with a lockable enclosure.

37. Missing the trolley-to-trolley load beam drawing. Do we need to provide a new load beam?

Response: Lift beam details drawing U-9342 (222-M-117-25-62). No, a new load beam will not be in scope.

38. Section 2.01. E. 10. F. Main hoist hook:

1) Duplex-type, designed and dimensioned to accommodate the existing rotor lifting beam connections.

Can the USBR provide the original tandem hook dimensional drawing(s)?

Response: Hook drawings will be added.

39. Section 2.01 V - Load Cells: Will SUM of weights be a requirement of the load cell systems? (not asked for in spec.)

Response: See Question # 33 for more detail. Yes, display total load on the HMI along with loads for each individual hook. For radio transmitter, at minimum provide ability to display all or toggle through each hook load verifying each is within its capacity.

40. Section 2.01.3.A.- Retention of historical character defining features: Design crane’s components to have similar size, shape, and scale of existing crane, in order to preserve and maintain their historical character. Do the cranes need to be of similar size, shape and scale of existing cranes (only) or does the Bureau have something else in mind?

Response: See Question #10 for more detail. Match existing color, size, shape and scale for each powerplant.

41. Section 2.01.E.2- 2.01.E.2 – Motor torque: In accordance with NEMA MG-1, Design D, breakdown torque not less than275 percent of full load rated torque. The motors will be NEMA Design “B” built for inverter duty - not NEMA Design D made for contactor control and across the line starting). Modern standard motors are not that high but they are close to 275% - Please clarify.

Response: CMAA 70 states that “squirrel cage motors shall have high starting torque, low starting current and high slip at full load, similar to NEMA Design D”. Confirmation will be required that the design B motor will meet these requirements. Specifications will be revised.

42. Section 2.01.L.1 - (Under bridge) asking for a type A-1 drive arrangement – is an A-4 drive arrangement (Individual bridge drive motors) acceptable? Please advise

Response: See Question #9 for more detail.

43. Section 2.01.T.2- Remote radio controls (if applicable) Include same essential characteristics as would be provided on the Pendant control. A pendant control will not be suitable for providing all the functions available in the cab’s operator controls as requested. A radio remote control with a belly box transmitter will be able to incorporate all functions available in the cab. We recommend the cab and radio remote controls (only) in lieu of a pendant that cannot incorporate the number of functions requested. Please advise. Is there a frequency range that you prefer for the radio remote control to operate in? Please advise.

Response: A radio remote control and cab control is the requirement. Spec section will be updated to omit pendant option. See Question #26 for frequency range.

44. Division 41 22 20; Section 2.01 B. Can the BOR give additional details on how the cranes are expected to operate in tandem mode?

Response: See Question #25 for more detail.

45. Division 41 22 20; Section 2.01 B. Will one crane cab need to operate both cranes? Are both cabs capable of operating in tandem?

Response: See Question #28.

46. Division 41 22 20; Section 2.01 B. Does the bureau have a preference for style of crane-to-crane mechanical link? Is there a minimum amount of slop that has to be maintained at the coupling between cranes?

Response: See Question #29.

47. Division 41 22 20;Section 2.01 C 2. “All electronic components for installed control systems must be rated for 200 deg F.” This is an unrealistic temperature rating. What electrical components does this include? The drives are only rated for 40 deg Celsius in another portion of the spec. This would considerably drive up the cost and is not needed in this application. Please clarify this requirement.

Response: See Question #30.

48. Division 41 22 20;2.01 C 13 This section discusses safe access to components for maintenance. The existing cranes have walkways for inspection of the bridge wheels. Are those required on the new cranes? There is doubt that with new standards for walkways that we will be able to maintain the trolley end approaches if they are required.

Response: Yes, provide inspection platforms. Platforms are required to meet safety standards.

49. Division 41 22 20;2.01 E 9 “Machinery enclosures: steel.” – What machinery enclosure are they referencing? Gearbox housing?

Response: See Question #31.

50. Division 41 22 20;2.01 L 1 “Provide CMAA 70 type A-1 bridge drive arrangement” – in order to meet the programmable skew control requirement, we will need to design the crane to have A-4 arrangements. Is A-4 Acceptable?

Response: See Question #9 for more detail.

51. Division 41 22 20; 2.01 M 5 What are the expected functions of the HMI to be located on the cab chair?

Based on the spec, I see the following. -load cell readings and tare-travel horn silencing I am assuming, but would like to confirm that drive parameters, status, and alarms screens are expected. As well as a screen that assists the operator when in tandem mode (adjacent crane status, load cell summation between all four hooks, etc). Please confirm or include additional details.

Response: Summation of total as located on the HMI. For belly box, at minimum provide ability to display all or toggle through each hook load verifying each are within its capacity.

52. Division 41 22 20;2.01 V Do the load cells need to summate the total load when cranes are operating in tandem with the 650-Ton load beam arrangement?

Response: See Question # 33 for more detail. Yes, and appear on cab HMI.

53. Division 41 22 20;2.01 X 1 Electrification in accordance with CMAA 70 Class A service? – Why not CMAA

Class D?

Response: See Question #34. Service class will be updated to Class D.

54. Division 41 22 20;2.01 CC How many of each type of outlets and location?

Response: See Question #36.

55. 01 51 00-2 Are water bags an acceptable option for load testing?

Response: No. Not in the powerplant.

56. 01 56 10-1 Clarification is needed on the definition of the statement “Maximum protection shall be required”.

Response: Protection of the floors is required.

57. 41 22 20-9 The goal is to design the new cranes to replicate the originals to preserve historical character.

What specific components need replicated in order to achieve this? Many modern crane components are standardized in size and appearance such as control enclosures, motors, hook, etc...

Response: See Question #10.

58. 41 22 20-10 What lumen work lights are required? Is there a certain foot candles that needs to be achieved?

Response: Lighting must be appropriate for conditions. See 41 22 20 - 2.01.M - Operator Cab.

59. 41 22 20-10 The spec calls for “Encoder: Factory installed, same manufacturer as motor,”, what is the purpose of this statement? The encoder cannot be factory installed and motor manufacturers do not supply encoder cables. Encoder cables are purchased from electrical suppliers and installed during crane assembly once the motor and drives are mounted.

Response: The intent was to ensure compatibility between components. This language will be modified.

60. 41 22 20-10 Industry standards encoders are not manufactured by the same company as the motors - Can we use separate brand encoders than the motors; are motor heaters required?

Response: Separate brand encoders may be used so long as compatibility is ensured. Motor heater requirement is dependent on the motor working temperatures versus ambient conditions of plant.

61. 41 22 20-11 What is the intent or use of the space heater in the design?

Response: Space heaters are to prevent condensation on the interior of enclosures.

62. 41 22 20-12 What overload limit device is required UFD or load cell? Will there be one or two brakes on the hoist motors? What are the steel machinery enclosures? What size are the current hooks?

Response: Assuming VFD is meant, load cells require the overload limit of the hoist. Number of brakes required is dependent upon meeting code requirements. Steel enclosure is referring to any open gearing similar to the current hoist gearing that have steel enclosures. Hook size, see hook drawing.

63. 41 22 20-14 Is a type A-4 bridge drive arrangement acceptable?

Response: See Question #9.

64. 41 22 20-20 What is the target temperature for the enclosure?

Response: Target temperatures depend on the allowable operating range temperatures of the enclosed equipment and ambient conditions.

65. 41 22 20-21 What are the required functions of the pendant? If a radio is provided will the pedant still be required? What radio control frequency will be used? Will the radio need to control multiple cranes or trollies for any synchronized picks?

Response: Question #43, pendant will be removed as an option. Question #26 radio frequency is stated.

Question #25, yes, radio controls is capable of tandem control.

66. 41 22 20-22 Spec calls for design D motors, modern day motors are design B to allow use with an encoder.

Was this an oversight in the spec?

Response: See Question #41.

67. 41 22 20-23 Does the anti-skew system have to work when the cranes are attached to each?

Response: See Question #29.

68. 41 22 20-26 Will we be providing a inspection the of the existing runway? What are the B.O.R. standards for rail hardware? For example, what is your standard for acceptable thread engagement?

Runway rail inspection is required to be submitted per submittal RSN 41 22 20-4 60 Percent Design, part 4. This is to include recommendations for either adjusting or removing and replacing existing runway rails.

Response: See Question #3 for more detail.

69. 41 22 20-26 Spec calls for stackable test weights totaling 700 tons. Can water weights be used instead of steel or concrete test weights? Water bags prevent unnecessary floor loading in the facility, arrive onsite with certificates of sanitation and can be filled from a local water source within the facility.

Response: No water weights allowed inside powerplants.

70. 41 22 21-2 Are there OEM drawings for the existing cranes that are not included in this drawing package?

Drawings provided do not provide sufficient information on key components necessary for design. Missing items include existing hooks, load blocks, crane reeving, electrical enclosures, conduit layout, girder walkway dimensions, trolley dimensions, cab design and cab access stairwell design.

Response: See attached crane drawings.

71. 51 00 00-2 Do we have to abate every pipe and every control panel? The inspection provided covers asbestos found mainly in the elevator. How is your cubic footage measured in regards to asbestos brakes and wiring?

Response: See 02 82 20 Removal and Disposal of Asbestos Containing Materials.

72. 51 00 00-2 Can you tell us how much asbestos is on the crane ? We cannot bid the project with the limited amount of asbestos data given. A detailed drawing with how much wiring is considered asbestos would be helpful for accurate bidding.

Response: Refer to the Price Schedule CLIN 6.

73. General, Is the scrap considered the contractors property once removed?

Response: Yes, it is the contractor’s responsibility to dispose of removed items.

74. General, do we have to load test each crane individually or only in a tandem scenario?

Response: All hooks and functions must be tested. The contractor will design the testing process to meet commissioning requirements for service. Coordinate with COR prior to testing. See Question #4 for more detail.

75. Manufacturer request, Can we have detailed drawings for each of the cranes from the manufacturer?

Response: See crane manufacturer drawings.

76. Equipment weights., Can we have weights for each crane and trolley from the manufacturer?

Response: See LPH dwg 222-M-117-26-17 STRESS DIAGRAM, RPH 222-M-117-76-19 BRIDGE ARRANGEMENT contains crane weight calculations.

77. Load Beam, We are missing the trolley to trolley load beam drawing. Can you send? Also, during the site visit, I noticed that the weight of the load beam assembly was marked as 83-tons, and the load beam capacity being rated at 625-tons. Can you confirm the largest lifted load to ensure that we do not need to increase the capacity of the cranes.

Response: The lifting beam drawing 222-M-117-25-62 LIFT BEAM DETAILS states 650 ton capacity. This will be the largest lift.

78. We have found that one of the safest and quickest ways to remove / install a new trolley in a powerhouse of this nature is to make a penetration in the power house roof for crane hook access through the roof to pick the trolley off of / onto the bridge. Once work is complete the roof will be repaired to its original condition.

Will this be acceptable means of installation?

Response: Proper review and approval process will be followed along with returning the roof to original condition or better. A structural analysis must be submitted detailing the temporary modifications, duration, and returning modifications to original condition or better. See Question 17 for more detail.

78.1 What is the makeup of the powerhouse roof?

Response: See Dwg 222-D-8004 for roof material details.

78.2 Would the USBR prefer a permanent access hatch installed in lieu of repairing the roof?

Response: No.

79. The government has provided analysis and certified reports regarding lead and asbestos testing at both power houses. In this report 51 00 02 – 47 (page 3 of 13 from Kyron) there is a Type of work description directing someone too: “ Cleanup dusts accumulating in/on the Morgan Cranes Electrical Cabinets”.

Is the contractor supposed to wipe down these areas before performing work?

Response: Refer to 02 82 20- Removal and Disposal of Equipment with Coatings Containing Hazardous

Materials for procedural guidelines.

Has the government not performed this work that was identified in 2015?

Response: It is the contractor's responsibility to verify the cleanliness of the work area prior to start.

Under normal circumstances the contractor is to assume that all materials at the start of the work are contained and safe to handle so as we do not disturb the existing condition in a way that would create a hazardous situation.

Response: This is correct, under normal circumstances.

Is the contractor to assume that there no pre cleaning requirements related to asbestos releases that occurred prior to site work starting?

Response: Correct, it is still the contractor’s responsibility to verify.

80. Proposal Delivery Clarification:

Based on the below directions – we want to confirm, in-person delivery of bids should also go to this address as well:

US Bureau of Reclamation

Scott Cooper- Contract Specialist, 1150 N. Curtis Rd., Boise, ID 83706

And this is the same address offerors for in-person bid opening, correct?

From Solicitation:

Bids will only be accepted in hard-copy form, electronic submissions will not be accepted.

Bids shall be mailed to:

US Bureau of Reclamation

Scott Cooper- Contract Specialist

Solicitation 140R1022B0001

1150 N. Curtis Rd.

Boise, ID 83706

Response: That is correct.

81. What is expected to be in the bid package other than the pricing schedule?

Response: Bids must contain the completed Schedule B (price schedule), SF-1442, and bid bond with power of attorney.

82. Davis-Bacon Act- is this for shop labor as well?

Response: The wage rate determination is applicable to all Prime and Subcontractor personnel working on the contract. Bidder’s Representations and Certifications in the SAM must be current to be considered for award.

83. Can you confirm TERO is applicable to this project?

Response: Yes.

File details come from the government source that posted it. Updated .