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1 RICHMOND-SAN RAFAEL BRIDGE

2 SEISMIC RETROFIT PROJECT

3 CONTRACTOR'S INFORMATION SESSION

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12 TRANSCRIPT OF PROCEEDINGS

13 OAKLAND, CALIFORNIA

14 JULY 12, 1999

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21 ATKINSON-BAKER, INC. CERTIFIED SHORTHAND REPORTERS

22 5 Third Street, Suite 625 San Francisco, California 94103

23 (800) 288-3376

24 REPORTED BY: SHARON LANCASTER, CSR #5468

25 FILE NO.: 9916495

 

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1 RICHMOND-SAN RAFAEL BRIDGE

2 SEISMIC RETROFIT PROJECT

3 CONTRACTOR'S INFORMATION SESSION

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11 TRANSCRIPT OF PROCEEDINGS, taken at

12 Caltrans District 4 Auditorium, 111 Grand Avenue,

13 Oakland, California, commencing at 1:10 p.m.,

14 Monday, July 12, 1999, before Sharon Lancaster, CSR

15 No. 5468.

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1 MONDAY, JULY 12, 1999 OAKLAND, CALIFORNIA

2 1:10 P.M.

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4 MR. TERPSTRA: Please take your seats.

5 Good afternoon. My name is Ken Terpstra,

6 project manager on this project.

7 And what we do now is take up some

8 time this afternoon to answer some of your

9 questions. I have a number of yellow cards. And if

10 you have more, you can simply just walk them up to

11 me, and I'll take them and read them, and the court

12 reporter will type them. And then I'll turn to the

13 appropriate person or panel member up here.

14 Maybe we should introduce our panel.

15 Do you all want to introduce yourselves? That might

16 be a good idea. Let's do that.

17 MR. MULLIGAN: Thanks, Ken. I'm Denis

18 Mulligan. I work for Caltrans. I'm the manager for

19 the Toll Bridge Program.

20 MR. DAHLGREN: Thomas Dahlgren, with Ben

21 C. Gerwick.

22 MR. EBERLE: John Eberle, construction

23 manager for Caltrans.

24 MR. VINCENT: John Vincent, with Ben C.

25 Gerwick.

 

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1 MS. KOUYATE: Tess Kouyate, with

2 CH2M-HIll.

3 MR. PARIS: I'm John Paris, with

4 CH2M-Hill.

5 MR. SUN: Shawn Sun. I'm the structural

6 contract manager working for Caltrans.

7 MR. LI: Odeon Li from Sverdrup.

8 MR. CORVEN: John Corven from DMJM.

9 MR. RICHARDSON: I'm Ron Richardson. I'm

10 the structural consultant project manager for the

11 project.

12 MR. TERPSTRA: And as I said, I'm Ken

13 Terpstra. I get to hand out the questions.

14 Let me start with a few, as we call

15 it, "big picture questions" that I'm going to ask

16 you to answer, Denis. And I know it's probably on

17 everyone's mind.

18 How much is the engineers' estimate

19 for this bid? Hold on.

20 If the low bidder is higher than the

21 engineers' estimate, will the job be awarded?

22 And thirdly: Is there a limit to the

23 overrun of the engineers' estimate at which the job

24 will not be awarded?

25 MR. MULLIGAN: Thanks, Ken.

 

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1 Caltrans is in the process of

2 revising the engineers' estimate as we speak. The

3 estimate is more than 300 million dollars and less

4 than 400 million dollars.

5 When we advertise the project in the

6 middle of August, we will post the engineers'

7 estimate at that time based on the revision which is

8 currently underway in the unit prices.

9 We anticipate that when we open bids,

10 we will award this contract. It is a public safety

11 project, and so we will have sufficient funds

12 authorized to award the contract.

13 We recognize that when we advertised

14 a year ago, the engineers' estimates were low. We

15 have gone through cost savings exercises and we have

16 gone out and obtained the necessary funding to

17 ensure that this work can proceed. So I wish to

18 allay any concerns that you may have.

19 MR. TERPSTRA: Next question.

20 With the advertised/bid dates of 8/16

21 and 12 whatever, how will this interface with the

22 schedules for the Carquinez Bridge and the trestle

23 expansion on the San Mateo Bridge?

24 MR. MULLIGAN: As the projects are

25 currently scheduled, there is approximately one

 

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1 month between the bid openings, but the schedules

2 are subject to change. As it's currently scheduled,

3 the San Mateo-Hayward trestle widening,

4 approximately five miles of precast concrete bridge,

5 will be advertised at the end of this month, with

6 the bid opening in early October.

7 The Carquinez Bridge is scheduled to

8 advertise in August. We are going through some

9 design issues that have arisen with respect to the

10 south tower. As it's currently envisioned, that bid

11 opening will be in early November.

12 The Richmond-San Rafael will then be in

13 early December, as it's currently set up. There is

14 about one month between each bid opening for these

15 large projects.

16 MR. TERPSTRA: Will there be minority

17 participation goals?

18 MR. MULLIGAN: This project will comply

19 with all applicable laws and regulations. Under

20 current law, there will be a three percent disabled

21 veteran goal on this project. There are no federal

22 funds on this project, so the federal goals will not

23 apply. Barring any change in law, we only

24 anticipate a three percent disabled veteran goal at

25 this point in time.

 

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1 MR. TERPSTRA: Question for Mr. Eberle.

2 What is the construction period for this contract?

3 MR. EBERLE: This is going to be a

4 calendar day project, not a working day project, and

5 it will be 1,170 calendar days.

6 MR. TERPSTRA: And John, another one for

7 you.

8 Will temporary bridges be allowed if not

9 enough time during the night closures, I take it,

10 for removal and replacement of the low level

11 trestle?

12 MR. EBERLE: If "temporary bridge" is

13 referred to as a temporary structure that the

14 traffic will then be allowed to be placed upon in

15 lieu of putting the precast member all in one night,

16 the specs right now do not preclude that; so, yes,

17 that will be allowed.

18 If "temporary bridge" refers to a

19 temporary trestle, on the concrete trestle portion,

20 a temporary trestle is only allowed between the two

21 existing structures. Temporary trestle on the

22 exterior of the concrete trestle is not allowed.

23 MR. TERPSTRA: And here is a question for

24 you, Odeon.

25 What percent of steel will have to be

 

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1 custom measured and fabricated piece by piece? And

2 maybe you just want to talk a little bit about that,

3 what you envision.

4 MR. LI: All of the steel on the existing

5 structure has to be custom measured. On the plans

6 the dimensions are from the shop plans, so the

7 contractor has to work out the dimensions.

8 MR. TERPSTRA: Then there is a question:

9 Who is the contact person or what is the department

10 at Chevron?

11 Caltrans is currently negotiating

12 with Chevron, Inc. to obtain the Temporary

13 Construction Easement for the barge load out area at

14 the east end of the bridge. Project plans will

15 delineate the available area. Should the

16 contractors be looking for additional access or

17 staging areas, they may contact Chevron, Inc., at

18 the following address: Chevron Products Company

19 P.O. Box 1272

20 Richmond, CA 94802-0627

21 Attention: Scott Moore.

22 Now, I have three questions for John

23 Vincent. And John also has a list of questions,

24 since there were a lot of questions about the micro-

25 pile. So I'm going to ask you these questions, and

 

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1 then you can read your own.

2 MR. VINCENT: Okay.

3 MR. TERPSTRA: What is the design criteria

4 for the temporary structures?

5 I think what we're talking about is

6 the temporary structures when you take out the

7 members, is what I'm thinking. We talked about this

8 earlier.

9 MR. VINCENT: As far as the steel towers

10 goes, the requirements are on the plans. The plans

11 show the dead weights coming from the superstructure

12 and the lateral loads that the existing towers must

13 resist. They were taken from the original as-built

14 plans. Our intent is that the contractor maintain

15 the existing load-carrying capacity of the

16 structure.

17 All the loads you need are on the

18 plans, except you will have to add construction

19 loads, and wind loads directly on your shoring

20 systems. Most of the information is on the plans.

21 MR. TERPSTRA: And then, John: Will third

22 party inspection be required for all welding on and

23 off site?

24 MR. VINCENT: Well, obviously, welding is

25 very important to us. Quality control-quality

 

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1 assurance requirements are spelled out in a lot of

2 detail in the special provisions. The contractor

3 will be required to perform the quality control, and

4 the engineer will have the ability to go in and do

5 and assurance.

6 MR. TERPSTRA: I have one more before you

7 turn to your own, either for you or John Corven.

8 Are there corrosion inhibitors required in

9 precast segments? If not, why not, for longer life?

10 Both precast segments and tremie concrete.

11 MR. VINCENT: Well, I can comment the

12 precast pile caps and the concrete jackets. We took

13 great care in developing the concrete mixes for

14 those elements. They have special proportions of

15 silica fume and other items to ensure that we don't

16 get corrosion of the steel. You probably have

17 noticed that we're not using epoxy coated reinforced

18 steel in the jackets or the pile caps.

19 In the case of tremie concrete, say,

20 for locking the two pile caps together, there is an

21 anti-washout mixture to ensure a good quality

22 concrete.

23 And I can add that for the concrete

24 jackets in the splash zone, we will also require a

25 polyuria coating.

 

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1 MR. TERPSTRA: That's all the questions I

2 have up here. I know, John, you have a handful of

3 them about various subjects. I think Thomas, you

4 have one, too. So go ahead and take it, John.

5 MR. VINCENT: Let me just read these.

6 There are several that deal with micropiling.

7 The first question: Is the micro-

8 pile outer casing a permanent structural element or

9 may it be removed?

10 The outer casing which is placed

11 below the existing pile cap, into which the pipe

12 reinforcement is placed, is a permanent element; it

13 shall remain in place. That's the way it's been

14 designed, so it's intended to be there.

15 Second question is: What skin

16 friction, psi, pull out force may be assigned to the

17 micropile structural element with the added shear

18 rings?

19 Typically, the skin friction that was

20 used for the pipe reinforcement in the rock was 51

21 psi. The additional friction that can be assigned

22 to the shear rings in the rock socket, and also the

23 shear rings and grooving in the pile cap itself,

24 were taken from API RP (2)(a).

25 If Gerwick performed the micropile

 

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1 design specification with no alternatives, why is

2 the liability for the design given to the contractor

3 by having the contractor design the rock socket

4 length?

5 There are performance test piles

6 required for this project. There is five locations

7 where the contractor will have to perform

8 performance pile tests.

9 These are non-production micropiles

10 that provide an opportunity for you to demonstrate

11 your construction methods and verify the rock socket

12 lengths assumed in your bid. If it's determined

13 that the rock socket lengths can be shortened or

14 they have to be lengthened, that adjustment will

15 take place before you start the production piles.

16 There is a mechanism in the special provisions for

17 doing that.

18 Why must the micropiles be grouted in

19 two stages? Is the liability for performance rocket

20 socket length (see No. 3 above) the contractor's?

21 Again, you're going to be doing

22 performance pile testing to verify your construction

23 methods and also to confirm that your system is

24 capable of developing the loads that are shown on

25 the plans.

 

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1 Again, the performance test

2 micropiles will be used to make any adjustments that

3 are necessary prior to proceeding with the

4 production piles.

5 As far as the two-stage grouting

6 goes, as Thomas mentioned in his presentation, the

7 first micropile that's installed at a pier will be

8 tested, and a second will be randomly chosen for

9 testing. So we only want the first stage grout to

10 go in, so that the R.E. can randomly pick one

11 additional pile for testing. Obviously, we can't

12 test a pile if you've already put in the second

13 stage grout. That is the reason for two-stage

14 grouting.

15 Next question: Must the 14-inch

16 diameter core drilled through the belled pier for

17 the micropile installation be grooved, or can an

18 alternative method be used?

19 The plans require the grooving.

20 Unlike the rock sockets, which will be tested, we do

21 not have the ability to actually test the connection

22 between the micropile and the belled pier. So we

23 will require the grooving.

24 This question makes reference to

25 sheet 4 of 31, titled "Two bell pier - micropile

 

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1 retrofit No. 1" sheet.

2 The note on the drawing (top

3 right-hand corner) could be read to suggest that if

4 "H" piles are encountered during drilling for the

5 14-inch core hole, that would be the contractor's

6 problem. Is this the intention?

7 The intent of the note is to bring to

8 your attention that there will be reinforcements

9 that you'll be coring through. Coring through

10 reinforcements in the concrete bells is expected and

11 will be tolerated.

12 If there should be an errant "H" pile

13 and your coring equipment encounters it, that will

14 be considered a changed condition. If it's a

15 battered pile, one of the solutions will be to

16 continue coring through the "H" pile. If it's a

17 vertical "H" pile -- which in most cases it won't --

18 but if were, that would be more problematic and it

19 may require relocation of the micropile.

20 This question regards micropiles and

21 has to do with the definition of "cleaning."

22 There is a requirement for cleaning

23 the bells. Primarily, it is to remove organic

24 material before the steel casings are put on and

25 grouted.

 

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1 We do realize that the specifications

2 lack a good definition of how clean is "clean." Our

3 intent was that cleaning be performed with either

4 abrasive equipment or high pressure water. The

5 intent, again, is to remove the majority of the

6 organic growth.

7 We realized that some marine growth,

8 calcareous, shelly material, can get to the point

9 where it adheres so tightly to the concrete that it

10 takes, an excessive amount of effort to remove it.

11 It is not our intent that this material be removed.

12 I think you will find in the near future that there

13 will be a clarification to help you know what we

14 will define as "clean."

15 There is a question about the

16 cathodic protection system. It says: Is the

17 cathodic protection system designed to protect the

18 new steel casing? If so, where are the bonding

19 strap welds?

20 The cathodic protection system used

21 uses an aluminum anode. The strap that is used to

22 attach the anode to the steel casing is cast with

23 the anode. The casing has welded studs that will be

24 protected from flame sprayed plastic used to attach

25 the anode. So your electrical connection is made

 

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1 between the strapping that's cast with the anode and

2 the steel studs that are welded to the casing.

3 The fourth question says: We need

4 current info on the bridge.

5 MR. MULLIGAN: We have a link from the

6 toll program Web site to a NOAA web site, Coast

7 Guard Web site and other Web sites. The Corps of

8 Engineers has a model of Sausalito. There is also

9 tidal information published through a variety of

10 sources that you can purchase.

11 It is an area where we have scour

12 protection in place so there are high volume, high

13 velocity currents. And there are rather extreme

14 fluctuations in tides. And that's all information

15 that's available in the public realm.

16 MR. SUN: I want to add one thing on

17 the micropile issue. Now, what you have seen

18 regarding the construction sequencing for micropile

19 is for the truss foundations. At the east approach

20 structure, there are 282 micropiles.

21 The outer casing is a half-inch thick

22 temporary casing, which can be removed after grout

23 placement in rock socket before grout hardening.

24 MR. TERPSTRA: It turns out I have a

25 few more here; you know, some that were written on

 

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1 the back.

2 John Paris, this is for you.

3 Will Caltrans obtain permits for

4 dredge materials? (A) ordinary for water disposal;

5 (B) rock for upland; (c) contaminated for upland?

6 Would you talk about dredging just in

7 general?

8 MR. PARIS: Sure. The permits have

9 already been obtained from the various agencies for

10 the dredging and aquatic disposal operation we'll be

  1. required to perform. Upland disposal will be required
  2. for a portion of the dredged material, and the contractor
  3. must obtain the authorizations for any upland disposal.

14 MR. TERPSTRA: Do the dredging

15 quantities given include an allowance for cleanup

16 dredging?

17 MR. PARIS: The dredging quantities

18 that were provided to the permitting agencies are a

19 maximum, and the contractor will be required to

20 conduct all of those activities within that maximum

21 allowable quantity.

22 MR. TERPSTRA: And then, Shawn, would

23 you say a few things about the rivets being removed

24 and replaced with bolts.

25 MR. SUN: Some of the existing rivets

 

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1 will be removed and replaced with high strength

2 bolts. As I said in my presentation truss spans,

3 there are over a quarter million rivets that will be

4 removed and replaced with high strength bolts.

5 There are also rivets that will be

6 removed in the approach structures and in the steel

7 towers.

8 MR. TERPSTRA: Then Odeon: Does the

9 bridge have lead paint? And how will its removal be

10 handled and paid for?

11 MR. LI: Yes, the bridge has lead

12 paint. Right now it's covered and paid for in two

13 items. One is spot blast clean and undercoat.

14 Another is work area monitoring.

15 MR. TERPSTRA: And then John Eberle: Can

16 Caltrans obtain staging areas within Chevron rather

17 than the contractor, as was stated?

18 MR. EBERLE: On the east side, where

19 Chevron is located, we are currently working on

20 obtaining a temporary construction easement. If we

21 do secure that, we will clearly spell that out on

22 the Web or in future updates.

23 MR. TERPSTRA: Thanks. That's all the

24 questions. Does anyone else have a question they

25 want to ask from the floor or turn me in a card?

 

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1 Otherwise -- I'll pause for a moment, see if there

2 are any.

3 I think with that, Denis, I'm just

4 going to ask you to come up and maybe say a couple

5 closing remarks.

6 MR. MULLIGAN: Couple items. One, thanks

7 for coming today. When you received a package when

8 you came in, it was pointed out it is missing a

9 couple of sheets on the steel erection. Those

10 sheets have been produced, they are available in

11 back. You can pick them up on your way out. We

12 apologize. They were left out of the original

13 printing.

14 We look forward to all of you

15 participating in this project. Once again, it will

16 be advertised on August 16th. Once we advertise the

17 project, we have a mechanism for you to communicate

18 and ask questions via the Web. And our duty senior,

19 who was not introduced earlier, standing at the

20 back, Sarah Picker, will be the point of contact.

21 She is currently the person that handles the bidding

22 inquiries on the other toll projects and arranges

23 all the tours on the west span of the Bay Bridge.

24 So once again, thanks again for

25 coming today. We hope this was informative and

 

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1 worth your while. We look forward to seeing you in

2 the future. Thank you.

3 (Ending time: 1:40 p.m.)

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