QA_11-18-2020.pdf

OR DOT CRGNSA 100(4)

Historic Columbia River Highway State Trail, Mitchell Point Crossing

# General Technical Question Answer Date

1 X Are there going to be any terminal ends on the Steel Backed Timber Rail (A1660) on this project?

There are no terminal ends on the steel backed timber rail. We have received your question and will be providing an appropriate response.

10/27/2020 11/13/2020

2 X

Can you provide clarification on the required energy for roadside rockfall protection fences.

Per specification section 654.03 the energy requirement is “70 ft‐ton (i.e. 100 kJ)”. We do not believe these numbers are equivalent.

We have received your question and will be providing an appropriate response.

11/3/2020

3 X

I am having difficulties registering and accessing the registered vendor list (aka planholders) list for this Project. I'd like to request this list by email to this email address if possible.

Obtain the registered vendors list (aka planholders list) for this project as follows.

Register in beta.sam and link your entity to your registration. After doing this, log into beta.sam to find the interested vendors list under this announcement. Contact the Federal Service Help Desk if you experience further issues.

11/3/2020

4 X

The CXT supplier has the following question on the Cascadian Double Vault Restroom with Chase for Mitchel Point Trial Crossing:

RE: Subsection 725.24(i), the exterior finish specification does not reference the Board and Bat finish shown on the plans.

We have received your question, and we’ll be providing an appropriate response.

11/5/2020

Check General or Technical

5 X

Plan Sheet L.6 – An area is depicted on Sheet L.6 as ‘available for stockpiling 10,000 CUYD of tunnel excavation material.’ Can up to 10,000 of tunnel excavation material be permanently left in this location? Or, is this just a temporary stockpile location and the Contractor is required to find a permanent disposal site?

See Section 314. 11/9/2020

6 X

Section 107.10(d)(4)(b) – Blasting and helicopter use is only allowed from September 1 through February 28. Does this blasting restriction apply to all tunnel work, regardless of depth / station number?

Subsection 107.10(d)(4)(b) requires all blasting and helicopter usage needed to occur only between the specified dates;

therefore, all blasting and helicopter usage needed cannot occur outside the specified dates.

11/9/2020

7 X

Section 156.07(n) – Please clarify what is meant by ‘Do not use Mitchell Point Drive to access or leave the project site.’ Mitchell Point Drive is shown in the project documents as being within the project boundary and the Contractor will need access to this portion of the project.

We have received your question, and we’ll be providing an appropriate response.

11/9/2020

8 X

Plan Sheet F.5 – Is the construction exit shown near Station 458+00 now required to be constructed to accommodate all construction traffic to access the Eastern portion of the project? Language on Plan Sheet F.5 is permissive and makes the construction access look optional.

We have received your question, and we’ll be providing an appropriate response.

11/9/2020

9 X

Section 566 – Shotcrete. There will be numerous days of shotcrete activity as the tunnel is advanced. Please indicate if sampling and testing will be required daily.

See Tables 566‐1 and Table 566‐2 for sampling and testing requirements.

11/10/2020

10 X

Section 566 – Shotcrete. There will be numerous days of shotcrete activity as the tunnel is advanced. Will test panels be required daily?

See Tables 566‐1 and Table 566‐2 for sampling and testing requirements.

11/10/2020

11 X

Section 156.04 – A lane closure (far right eastbound lane of I‐84) for the duration of the project would benefit the project and allow the contractor the flexibility to transition between the two sides of the tunnel and provide further protection for the travelling public. Can this be considered?

No. Comply with the requirements of Subsection 156.04(b).

11/10/2020

12 X

Section 156.04 – Are there any restrictions on what activities the contractor can perform in the closed lane? Can the contractor move equipment in the closed lane even if moving in the opposing direction to the eastbound traffic?

In accordance with Subsection 156.04, perform work according to the MUTCD, the approved TCP, and ensure the safety and convenience of the public.

11/10/2020

13 X

Section 156.04 – The time windows for lane closures and rolling slow‐downs are too restrictive and will not allow for meaningful progress of the work (disproportionate amount of time setting up and taking down the closure and not enough time to complete needed work). Please revise lane closure window to at least 8 hours. If a lane could be closed weekdays and opened on weekends that would be preferable.

Bid accordingly. 11/10/2020

14 X

Drawing Sheet J.4 and J.5 – It is unclear where the Rock Containment Net (RCN) and Moveable Rockfall Barrier (MRB) are supposed to be positioned relative to the lane closure shown in Drawing Sheet L.3.

The concrete barrier shown on Sheet J.4 represents the existing I‐84 concrete barrier that doesn’t pertain to the lane closure detail on Sheet L.3. Placement of the RCN and MRB is according to the contractor’s method of operations.

11/10/2020

15 X Are both eastbound lanes to be closed when the RCN and MRB are deployed?

No, I‐84 lane closures are according to Subsection 156.04.

11/10/2020

16 X Please provide a detail for the positioning of RCN & MRB systems.

Another detail will not be provided, bid accordingly.

11/10/2020

17 X

52.236‐1 – Due to the specialized nature of the work and qualifications required, can the fifty percent self‐performance requirement for general contractor be significantly reduced?

We have received your question and will be providing an appropriate response.

11/10/2020

18 X Can the bid date be extended?

We do not intend to extend the bid opening date at this time.

11/10/2020

19 X

Attached for reference. In the plans they call for a Black, TRM Type, 5.A. Per the Federal Highway Specs Table 713.18 Type 5.A appears to be a rolled erosion control product such as an erosion control blanket.

Would you be able to clarify what type of TRM is being specified.?

Regarding the attached for reference, we do not review submittals prior to award.

For MSE Walls, conform to the requirements of Section 255, which also includes the material requirements.

11/10/2020

20 X

Details for steel set installation is only provided at the portals, can a detail be provided for installation of steel sets in the middle of the tunnel?

We will not be providing additional details for installation of steel sets in the middle of the tunnel. See Subsection 555.18(b)(1) and the additional information in the Geotechnical Baseline Report Physical Data regarding anticipated support conditions.

11/11/2020

21 X How will additional excavation and shotcrete be paid for?

Bid the plan quantities. 11/11/2020

22 X

If our bid proposal is Fed Ex’d to FHA do we have the ability to submit changes per fax/email? If so (see attached), page A‐2 says changes are to be received by the time specified for receipt of bids and page B‐16 says changes are due one working day prior NLT 5:00 PM to the date specified for receipt of bids. Please clarify when the changes are due.

In accordance with the Notice to Bidders, Bids may be modified by email. Both the Notice to bidders and FAR 52.214‐7(b)(1) state that bids, modifications, or withdrawals must be received at the Governments office by the exact specified time. Subsection (i) is an exception under 52.215‐7(b)(1) indicating when a bid would be accepted if the government does not receive the emailed modification by the time specified for receipt of bids.

11/12/2020

23 X When will Addendum #1 be available?

We will post Amendment A001 when it is ready for posting.

11/12/2020

24 X I am having trouble finding the bid bond percentage. Could you please clarify what the percentage should be for Mitchell Point?

See FAR clause 52.228‐1. The bid amount shall be 20 percent of the bid price or $3 million, whichever is less.

11/12/2020

25 X

Please confirm if the tunneling scope is or is not exempt from the Small Business requirement that 50% of the labor on the project be self performed to receive the 10% pricing advantage.

We have received your question and will be providing an appropriate response.

11/13/2020

26 X

Please confirm if bid item A0660 20421‐0000 shall include all anticipated ground support or if ground support will be paid separately under the applicable pay items separately.

In accordance with FP‐14 Subsection 204.17, Line Item No. 20421‐0000 is a pay item that covers work performed under Section 204. See Sheet K.1 for a listing of tunnel excavation and support quantities.

11/13/2020

27 X

Please confirm if there is a minimum distance required to mechanically excavate the turn under of the tunnel portals (exclusive of the daylight adits)?

Conform to the requirements of Section 205.

11/13/2020

28 X

A short run of the steel sets at the west portal are exposed to open air (on the left hand side as shown in the drawing) prior to being lagged and shotcreted. Please confirm that these sets are not being relied on for external ground/slop support on the right hand side as they would be loaded from one side only – no reactant bearing forces on the open side which often causes potential for a steel set failure.

To address the localized low cover condition at the west portal, the hybrid ground support system shown on Sheet K.4 has been designed such that the primary ground support function is provided by the indicated rock dowels, ground anchors (spiles) and shotcrete (Refer to Note 1 on Sheet K.4). Where exposed to open air, the indicated timber lagging at the extrados is intended to serve, in conjunction with other worker rockfall protection measures placed by the Contractor, as a protective canopy against minor sloughing of loose rock from immediately above the portal during construction.

11/13/2020

29 X Will the Governments testing trailer include the materials for all shotcrete flexural and compressive testing?

Contents of the Government‐furnished laboratory trailer are specified under Section 154.

11/13/2020

30 X

Please confirm that a full time QCM (with sole responsibility of quality management) as described in the specification will be required onsite at all times during the performance of both self‐performed and subcontracted work.

See Subsection 153.03. 11/13/2020

31 X Will the 53LF of MP3 support in Reach 6 be concrete lined or fully shotcreted with tined shotcrete covering?

We have received your question and will be providing an appropriate response.

11/13/2020

32 X

The current shotcrete thicknesses only call for half encapsulation of the steel sets as shown.

Should the contractor assume that the steel sets should be fully encapsulated?

We have received your question and will be providing an appropriate response.

11/13/2020

33 X Is there a prescribed bolt patter for the rock anchors to hole WWF used to support the drain strips? One cannot be found in the documents.

No, a prescribed pattern has not been specified. See Subsections 206.07(f).

11/13/2020

34 X

Bid Item A1660 Guardrail System SBTA (ODOT STANDARD). No details on end terminal or end post provided. Are we to assume a standard 40’ terminal system on one or both ends? Please advise.

We have received your question and will be providing an appropriate response.

11/13/2020

35 X

The Q & A we received dated 11/13/2020 has multiple answers saying “We have received your question and will be providing an appropriate response.” Am I missing something?

No. We will respond when we have the appropriate answer to provide.

11/16/2020

36 X Will there be an addendum coming out today?

We will post an amendment when we have an amendment to post.

11/16/2020

37 X

The special provisions refer to convergence monitoring points and/or arrays at locations shown on the plans. In review of the plans, the location and number of these monitoring points/arrays does not appear to be provided.

Please provide clarification or additional information on the minimum requirements for this work element in the form of the location, number, and configuration of monitoring points required under the contract.

This question has already been submitted by your company through Rowan Anderegg, so our response to this question will be sent back to that person.

11/16/2020

38 X

Specifications for steel sets requires a weathering agent but no galvanization. To apply the weathering agent (Natina) Zinc is necessary for bonding. From what we can tell the steel sets will not be exposed, therefore a weathering agent will not be visible. Is a weathering agent still required? If so the steel sets will need to be galvanized.

Application of weathering agent on steel set surfaces has not been specified.

11/17/2020

39 X What will be the finish of the shotcrete? The specifications state as directed by the CO (566.08 d‐10).

We have received your question and will be providing an appropriate response.

11/17/2020

40 X

Is air entrainment required for the shotcrete?

Based on Table 566‐1 we believe air entrainment is optional (Wet vs. Wet AE) provided the shotcrete composition and property meets the requirements.

We have received your question and will be providing an appropriate response.

11/17/2020

41 X

Traffic control sheet L.2 and specifications page F‐134, section 656.07 (b) and (c) state the temporary MRB and RCNs are required to be colorized if in the work zone for more than 14 days. Colorization requires the MRB and RCN to be galvanized then stained with the weathering agent. Does the FHWA understand this process is extremely expensive for a non‐permanent item? If the temporary rockfall protection (MRB & RCN) is moved slightly (i.e. 1‐foot) does the 14 days restart? We want to ensure specifications are met, in addition save FHWA money on a process that may not be required.

We have received your question and will be providing an appropriate response.

11/17/2020

42 X

The special provisions refer to convergence monitoring points and/or arrays at locations shown on the plans. In review of the plans, the location and number of these monitoring points/arrays does not appear to be provided.

Please provide clarification or additional information on the minimum requirements for this work element in the form of the location, number, and configuration of monitoring points required under the contract.

We have received your question and will be providing an appropriate response.

11/18/2020

43 X

In section 156.04 it states rolling slowdowns and lane closures are allowed during specific times.

When tunneling drill/blast work starts approximately 50 feet in the tunnel, is FHWA assuming that it is an operation of potential flyrock even though it is underground? If yes, then tunneling contractors can only drill/blast 9 am ‐ 1pm Tuesday‐Thursday and 9am ‐ Noon Monday & Friday?

Drilling and Blasting have separate requirements. See Subsection 156.07(m), and also comply with Subsections 107.10(d), as well as Sections 204, 205, 206, and 210.

11/18/2020