royal ridge 1.0 mg elevated storage tank 026m-16f city …

Addendum No. 3

IRV15145 – Royal Ridge 1.0 MG Elevated Storage Tank

ROYAL RIDGE 1.0 MG ELEVATED STORAGE TANK

026M-16F

CITY OF IRVING

ADDENDUM #3

DECEMBER 8, 2015

1. THIS ADDENDUM IS HEREBY MADE AS PART OF THIS CONTRACT

SPECIFICATION. THIS ADDENDUM IS ISSUED TO MODIFY, CLARIFY,

EXPLAIN, OR CORRECT THE ORIGINAL SPECIFICATIONS. ANY CHANGES

CALLED OUT IN THIS ADDENDUM SUPERSEDE THE ORIGINAL

SPECIFICATIONS.

2. BIDDERS SHALL SIGN AND ATTACH THIS ADDENDUM TO THE INSIDE

FRONT COVER OF THE SPECIFICATIONS AND ALSO ACKNOWLEDGE THE

RECEIPT OF THIS ADDENDUM BY STATING THAT ACKNOWLEDGMENT ON

THE OUTSIDE LOWER RIGHT HAND CORNER OF THE SEALED ENVELOPE

CONTAINING THE BID.

3. ANY BIDS THAT DO NOT INCLUDE THIS ADDENDUM SHALL BE

CONSIDERED NON-RESPONSIVE.

4. BID OPENING DATE TO BE CHANGED TO DECEMBER 16, 2015, AT 3:00PM.

GENERAL CLARIFICATIONS – QUESTIONS RECEIVED TO DATE

5. Reference Attachment B-2 “Special Instructions to Bidders”, Paragraph 19 (9)

Question:

Are you going to hire the geotechnical engineer to monitor the drilled shaft installations

as recommended by Freese and Nichols in the Technical Memorandum (Page 19, Item 19

Testing)?

Response: Yes, the City has a laboratory.

6. Reference Attachment B-2 “Special Instructions to Bidders”, Paragraph 19 (Page 19)

Question:

Is all concrete testing including concrete testing associated with the tank concrete

support pedestal paid by the City (Page 19, Item 19 Testing)?

Response: Yes

7. Reference Attachment H-13 “General Provisions and Requirements”, Paragraph G1.1

“Working Hours” (Page 43)

Question:

Will we be granted permission to work on weekends (Page 43)?

Response: Contractor may work on Saturday’s with prior notification. Sunday

work will be evaluated on a case-by-case basis.

Addendum No. 3


8. Reference Attachment H-13 “General Provisions and Requirements”, Paragraph G6.14

“Arrangement and Charge for Water Furnished by the City” (Page 56)

Question:

Will water be provided at sufficient pressure to fill the elevated tank upon completion for

testing and disinfection (Page 56 G.6.14)?

Response: Yes, the supporting offsite proposed 18” water line (by others) is

scheduled to be completed ahead of the substantial completion date of this EST

project.

9. Reference Section 01515 “Temporary Water”

Question:

Specification 01515 requires installation of a water meter to monitor water use which

will then be billed at the end of the project. Please confirm this is correct.

Response: Yes. See also Section 33 16 19.13 “Composite Elevated Water Utility

Storage Tank”, Paragraph 3.08.B, for additional information in regards to payment

of water.

10. Reference Section 01 29 00 “Payment Procedures”

Question:

Various line items say “there will be no measurement for ---” Does this mean we put

zeros on the bid forms on these line items, please clarify?

Response: No, the intent is that there will be no additional measurement for the

items other than what is listed in the bid form. The lump sum or unit listed will be

the only measurement taken on that bid item. The price for the bid item is the price

for all of the labor, materials, and incidentals necessary to complete the work

required for the bid item.

11. Reference Section 01 31 00 “Project Management and Coordination”, Paragraph 1.14.A

(Page 6)

Question:

Will the Engineer stake the center point of the elevated tank (Section 01 31 00 1.14A)?

Response: No, Tank Manufacturer is responsible for all staking and site control

maintenance. Existing site control has been provided on Sheet C-1. Electronic files

can be provided to the selected Tank Manufacturer.

12. Reference Section 01 31 13 “Project Coordination”, Paragraph 1.04.B ()

Question:

Can monthly progress meetings be conducted by telephone if our crew foreman is not on

site (Section 01 31 13 1.04B)?

Response: Yes, but only on instances if construction is on hold and foreman is not

onsite.

Addendum No. 3


Question:

We intend on using our field erection Forman/superintendent as the site superintendent,

once the tank is erected we will then transfer site superintendent to the subcontractor that

is on the job site. Please confirm this is adequate.

Response: Yes.

13. Reference Section 09 96 00 “High-Performance Coatings”, Paragraph 1.02.E (Page 2)

Question:

Will the Engineer visit our shop facility to inspect shop blasting and shop priming

(Section 09 96 00 1.02E)?

Response: No, only field observations will be made. Tank Manufacturer shall

adhere to coating manufactures guidelines for all coating aspects to ensure proper

adhesion.

14. Reference Section 33 16 19.13 “Composite Elevated Water Utility Storage Tank”,

Paragraph 1.02.A.2 (Page 2)

Question:

Would it be acceptable if we bid as a sub to a local GC?

Response: No, the only bidders allowed are listed in Specification 33 16 19.13,

Paragraph 1.02.A.2. Please review the entire Section of 1.02, “Quality Assurance”,

for specific items that the Tank Manufacturer is responsible for performing

themselves.


Paragraph 1.03.A.5.b (Page 4)

Question:

Our welders are certified in accordance with ASME Section IX, which is required per

AWWA D107-10. Is this acceptable in lieu of AWS D1.1 certification, which is for

welding structural steel members (Section 33 16 19 1.03 A.5.b)?

Response: AWWA D107-10 calls for AWS D1.1 certification also, therefore this

shall still be required per the contract documents.


Paragraph 2.05.B.4 (Page 8)

Question:

Is a carbon steel interior tank ladder coated with the same coatings as the interior of the

tank adequate in lieu of the stainless steel interior tank ladder as specified (Section 33 16

19 2.05 B.4)?

Response: No, ladder shall be stainless steel as specified.

Addendum No. 3



Paragraph 2.05.D.2 (Page 9)

Question:

Are safety cages required in addition to the safety climb cable (Section 33 16 19 2.05

D.2)?

Response: Safety cages shall be installed in accordance with OSHA requirements.


Paragraph 2.05.F.2.b (Page 10) and Sheet C-6

Question:

Spec’s call for a 12’ x 12’ over\head door at base of concrete pedestal and Plans call for

a 14’x14’ overhead door at base of pedestal, please confirm which is required.

Response: Overhead door shall be 14’x14’ as shown on sheet C-6.


Paragraph 2.05.L.1.a (Pages 10-11) and Sheet C-6

Question:

Can we substitute a hydrodynamic mixing system in place of the draft tube mixing system

such as a Tideflex Mixing System (Sheet C-6, Elevation)?

Response: No, a draft tube is the only acceptable mixing system


Paragraph 2.05.F (Pages 9-10)

Question:

What is the size of the personnel door and overhead vehicle door (Section 33 16 19

2.05F)?

Response: Please see Sheet C-6 for door sizing.


Paragraph 2.05.Q.1 (Page 13)

Question:

Will the Owner’s antenna mounts be mounted to the tank roof handrail (Section 33 16 19

2.05 Q.1)?

Response: No, Owner’s cellular communication antenna shall be mounted to the

pedestal wall above the pedestrian door.


Paragraph 2.05.Q.2 (Page 13)

Question:

Are there future antenna location openings shown on the drawings (Section 33 16 19

2.05 Q.2)?

Addendum No. 3


Response: Yes, there are duct banks for future cabling on Sheet E-5, no future

antenna locations are shown.


Paragraph 3.04.D.2 (Page 18)

Question:

Will the review of the formed concrete surface delay our crew from pouring a wall jump

each day (Section 33 16 19 3.04 D.2)?

Response: No, there should not be a delay, unless a deficiency is found.


Paragraph 3.07.A.3 (Page 19)

Question:

Is the contractor responsible for paying for the testing lab?

Response: No, the City has a lab.

25. Reference Sheet G-1, 29

Question:

How long should we expect to shut down work during the week of May for the “Byron

Nelson Golf Tournament”? And when exactly will these dates be set for?

Response: It is not expected that the Byron Nelson Golf Tournament will impact

the construction schedule. This is typically scheduled for the second week of May;

the dates for the 2016 tournament are May 19-22, 2016.

26. Question:

Please confirm this project is tax exempt?

Response: Materials which are physically incorporated into the facilities

constructed for the Owner are tax exempt. Items that are used by the Contractor

but are not physically incorporated into the Owner’s facilities and/or items that are

consumed by construction are not tax exempt.

27. Question:

Our standard tank design includes a cone roof, please confirm a cone roof instead of a

dome roof will be acceptable.

Response: Yes, a cone roof is acceptable. Dome roof is shown for illustrative

purposes.

28. Question:

May we use zinc plated bolts, nuts and washers for the entire tank? Spec’s call out

stainless required but thought we would ask if this is an absolute must?

Response: No, all bolts, nuts and washers shall be stainless steel as specified.

Addendum No. 3


29. Question:

We are assuming shop priming of entire tank is allowed and we will pay for a third party

shop inspection? Please confirm this is adequate?

Response: Yes, however third party inspection must be completed at site after steel

is delivered.

30. Question:

Please confirm shrouding/containment will be required during field painting operations?

Response: Yes, shrouding/containment will be required during field painting

operations.

31. Question:

Will contractor be required to obtain permits as directed in Special Instructions 21?

Response: The contractor will be required to obtain the permit, but no fee will be

associated with the permit. Please see addendum item 35 for further clarification.

MODIFICATIONS TO SPECIFICATIONS

32. Reference Attachment B-2 “Special Instructions to Bidders”

Reference Page 20, Paragraph 23

Modification: Modify the first two sentences of the paragraph as follows:

“The total time for the project is 390 460 calendar days. The elevated storage tank

shall be substantially complete and operational (including instrumentation) within

330 calendar days of the project.”

33. Reference Attachment H-13 “Standard Form of Agreement”

Reference 3, Paragraph 3

Modification: Modify the third paragraph as follows:

“The CONTRACTOR hereby agrees to commence work within fourteen (14)

calendar days after the date written notice to do so shall have been given to him,

and to complete the same within 390 460 calendar days after the date of written

notice to commence work, subject to such extensions of time as are provided by

the General and Special Conditions. The elevated storage tank shall be

substantially complete and operational (including instrumentation) within 330

calendar days of the project.”

34. Reference Section 01 29 00 “Payment Procedures”

Reference Page 4, Paragraphs 34-35, 34-36, and 34-37

Addendum No. 3


Deletion: Delete the following paragraphs:

BID ITEM 34-35 – LSI CAMERA SECURITY SYSTEM ALLOWANCE

The sum of $20,350 to be used for miscellaneous projects provided by LSI. LSI has provided

a fixed price proposal for the labor, materials, equipment and all other items required for

installation. The price of these services and a copy of the proposal are included in Appendix

C.

BID ITEM 34-36 – FLYGT MULTISMART RTU ALLOWANCE

The sum of $19,500 to be used for miscellaneous projects provided by Flygt. Flygt has

provided a fixed price proposal for the labor, materials, equipment and all other items

required for installation. The price of these services and a copy of the proposal are included

in Appendix D.

BID ITEM 34-37 – PROTOLINK SCADA INTEGRATION ALLOWANCE

The sum of $4,800 to be used for miscellaneous projects provided by Protolink, Inc. Protolink,

Inc. has provided a fixed price proposal for the labor, materials, equipment and all other items

required for installation. The price of these services and a copy of the proposal are included in

Appendix E.


Reference Page 6, Paragraph 1.06.A.1

Modification: Delete paragraph in its entirety and replace with the following:

“Contractor shall register with the City and will be responsible for the $125

registration fee if they are not already registered with the City. The

Contractor will not be charged inspection fees.”


Reference Page 9, Paragraph 2.03.D.1

Modification: Modify first sentence as follows:

“Provide intermediate offset platforms on the support wall ladder at minimum

intervals shown on the Drawings”.

37. Reference Section 33 16 19.13 “Composite Elevated Water Utility Storage Tank”

Reference Page 18, Paragraph 3.05.D

Modification: Modify Paragraph as follows:

“Dome Lining: Domed tank floor shall be lined with steel plates that may be

shaped to match the shape of the tank floor. Unformed steel liner plates that do

Addendum No. 3


not match the shape of the concrete floor may be used provided the liner plate is

grouted after welding. The steel liner should be constructed with a 1-inch or

larger grout space between the liner plate and the concrete member. Subsequent

to testing, the void in the interface between the steel tank floor plate and the

supporting structural concrete dome or slab shall be filled with a flowable grout

mix using a procedure that removes entrapped air. Provide anchorage in areas

where the grout pressure is sufficient to lift the plate.”

38. Reference Section 26 05 33.01 “Conduit”

Reference Page 5, Paragraph 3.03.A

Modification: Modify sentence as follows:

Underground conduit shall be concrete capped encased.

39. Reference Section 40 90 01 “Instrumentation”

Reference Page 6, Paragraph 2.04.G

Modification: Modify Paragraph as follows: Each transmitter shall have an

internal transient protector conforming to IEEE standard 587, category B and

IEEE standard 472. Transient protector shall be Rosemount Model 470. Each

transmitter shall be furnished with a 3-valve manifold with NORMAL, ZERO,

BLOCK, CALIBRATE and BLOWDOWN functions. Transmitter shall have local

indication of pressure. Transmitter shall be as manufactured by Rosemount

3051S, Endress + Hauser, Siemens or Foxboro no approved equal. Model #

1GP10-T30D1F-L1 (Hart Protocol Electronic Direct Conn Gauge Pressure

Transmitter.

MODIFICATIONS TO PLANS

40. Reference Sheet C-6

Detail Plan-Section

Modification: Modify note for tower ladder as follows:

“OFFSET STRAIGHT TOWER LADDER (BY MANUFACTURER)”


Note 2 and 5

Modification: Modify note 2 as follows:

“THE BOWL DIAMETER AND PEDESTAL DIAMETER MAY BE

ADJUSTED BY UP TO 5’ 8’ TO MATCH THE MANUFACTUER’S

DIMENSION. THE PEDESTAL DIAMETER AND THE WALL THICKNESS

MAY BE ADJUSTED TO MATCH THE MANUFACTURER’S STANDARD

DIMENSION. HOWEVER THE MANUFACTUERER IS RESPONSIBLE FOR

THE DESIGN IN ACCORDANCE WITH THE SPECIFICATIONS. THE

Addendum No. 3


TANK DIMENSIONS MUST MEET THE SPECIFIED HEAD RANGE

AND CAPACITY.”

Addition: Add the following to Note 5

“MANUFACTURER SHALL DESIGN AND PROVIDE A DRAFT TUBE

MIXING SYSTEM AND SUPPORTING APPURTENANCES SEALED BY AN

ENGINEER.”


Replacement

Replace Sheet C-10 in its entirety with attached sheet.


Replacement

Replace Sheet C-11 in its entirety with attached sheet.

44. Reference Sheet C-11A

Addition

Add attached sheet C-11A.

45. Reference Sheet E-3

Modification

Modify note by symbol 4 to read as follows, “PROVIDE (2)-4"C. FROM THE

TRANSFORMER TO THE PAD MOUNTED SWITCH AS REQUIRED BY UTILITY

COMPANY. COORDINATE TIE-IN AND ALL REQUIREMENTs I.E. BURY

DEPTH, CONDUIT, ETC. WITH ONCOR.


Deletion

Modify note by symbol 22 to read as follows ”CONTRACTOR SHALL PROVIDE THE

FOLLOWING HEAD END EQUIPMENT; RACK MOUNT SWITCH CATALOG

NUMBER IE-3010-16S-8PC, POWER SUPPLY CATALOG NUMBER RPS-IE3010-

COVER, CISCO IE 3010 LAN BASE WITH WEB BASED DEV MGR CATALOG

NUMBER SIELBK9T-12253EZ, IE 3010 LOW DC POWER SUPPLY CATALOG

NUMBER PWR-RGD-LOW-DC/A, SMARTNET 8X5XNBD IA RACK MOUNT

SWITCH CATALOG NUMBER CON-SNT-301016S8, CATALYST 3750V2

CATALOG NUMBER WS-C3750V2-24PS-S, SMARTNET SERVICE CATALOG

NUMBER CON-SNT-37524PSS, AC POWER CORD CATALOG NUMBER CAB-AC,

AND CISCO STACK WISE CATALOG NUMBER CAB-STACK-50CM.

CONTRACTOR SHALL REFER TO APPENDIX F FOR MORE INFORMATION.

Addendum No. 3



Modification

Modify detail 6 title, Butterfly Ball Valve Disconnect Detail.

END OF ADDENDUM # 3

SIGNATURE OF ACKNOWLEDGMENT

royal ridge 1.0 mg elevated storage tank 026m-16f city …

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