17264 Addendum 1.pdf

ADDENDUM NO. 1

A1-2000-1

CHEBOYGAN LOCK FACILITY IMPROVEMENT PROJECT DTMB FILE NO. 751/17264.ABG

ADDENDUM NO. 1

File No.: 751/17264.ABG

Department of Natural Resources

Project Name: Cheboygan Lock Facility Improvement Project

Subject: Request for Bids – Addendum 1

DATE: January 5, 2024

BID DATE: Wednesday, January 24, 2024, at 2:00 p.m. Eastern Time

TO: All Bidders

INTENT: This Addendum is issued to revise and clarify the intent of the project bid documents.

ATTACHMENTS: 1. Prebid Meeting Attendance Record

2. Question Responses

2. Revised Project Documents

All Bidders submitting a Bid on the above Contract shall carefully read this Addendum and give it consideration in the preparation of their Bid.

Contractor shall list all addenda on the Bid Form to ensure conformity in the bid.

Drawings, Specifications and/or Proposals are herein amended, expanded and/or modified, as hereinafter described, and become a part of the Contract Documents with same force and affect as if incorporated, therein, originally. Any contrary provisions contained, or referred to, in

Drawings and/or Specifications, shall remain applicable unless overridden by this Addendum.

Revised or contrary provisions herein shall not affect any other part of Contract Documents and any deletions, additions, substitutions and/or revisions mentioned, shall include all labor, materials, methods, modifications, etc. required for complete performance of the work.

The following are revisions to the Bidding and Contract Requirements:

GENERAL:

1. Prebid Meeting Attendance Record

2. Questions List

DRAWINGS & SPECIFICATIONS:

1. C-04: Clarified extents of concrete rehabilitation

2. C-05: Corrected errant note regarding concrete rehabilitation extents

3. S-04: Corrected errant pintle assembly component dimensions

PROJECT MANUAL:

1. N/A

ADDITIONAL KEY INFORMATION:

1. 2004 SSI Report of Geotechnical Investigation for Cheboygan Lock Evaluation

2. Historical Miscellaneous Geotechnical Exploration Drawings

Bidder shall acknowledge receipt of this Addendum at the bottom of the Bid Summary form to be submitted as part of the greater bid.

ATTACHMENT 2 TO ADDENDUM NO. 1

SUMMARY

This Attachment 2 to Addendum No. 1 provides all bidders with responses to questions received. The questions in the following table have been received and answered by the Engineer:

Cheboygan Lock Facility Improvement Project - Addendum #1 Question Responses

ITEM DOCUMENT SECTION QUESTION RESPONSE

Column1 Column12 Column13 Column2 Column3

0001 DRAWINGS SHEET S-04 Are the pintle components in Details 3 & 6 to be HDG?

No. The steel pintle shoe and sockets in Details 3 and 6 on Sheet S-04 are to be ASTM A36 carbon steel in accordance with Specification 05100 Part 2 Section 2.01.A.9. These components shall be painted in accordance with Specification 09900 except for designated contact surfaces, as noted in Specification 05100 Part 2 Section 2.06 .

0002 DRAWINGS SHEET S-04 Detail 4 indicates an inside diameter of 4” and an outside diameter of 3 3/8”. Please advise.

See revised drawing S-04. The following dimensions have been corrected:

- (3/S-04) Steel Pintle Shoe Cylinder: 2 5/8" [4"] O.D. Interference Fit (Press) - P7/h6

- (4/S-04) Bronze Pintle Cap: 3 3/8" [5"] O.D. Clearance Fit (Loose Running) - C11/h11

0003 DRAWINGS SHEET S-04 Can you supply CAD drawings for the pintle assembly?

CAD files may be provided to the successful bidder upon contract award. Files will not be provided during the bidding process.

0004 DRAWINGS SHEET S-04

Will Bronze C95400 be an acceptable alternate for the pintle socket & cap in the pintle assembly on S-04?

Yes, Bronze C95400 is an acceptable alternative to C93200 for the pintle socket and cap.

0005 DRAWINGS

SHEETS C-10,

C-11 & EWD-1

Clarify what the limits are of alternate 2 “Hydraulic Operating System Refurbishment”. Do any cylinders, hoses, etc, need to be replaced or refurbished if alternate A2 is not utilized?

Alternate 2 is all inclusive of the hydraulic and electrical improvements shown on Sheets C-10, C-11, and EWD-1. Note the replacement of the lock bypass fill valves (existing butterfly valves) with new vertical slide gates including the hydraulic cylinders and associated hoses, valves, etc. as shown on Sheets C-08 and C-09 will be included in the base scope of work and are not subject to exclusion per Alternate 2.

0006 DRAWINGS

SHEETS C-04

and C-05 Clarify the limits of both the lock wall and lock slab rehabilitation.

See revised drawings C-04 and C-05. The following C-05 Note 2 has been corrected:

- Repair details apply to all exposed concrete surfaces inside of the lock between the upstream and downstream miter gates [beginning twelve inches downstream of the upstream stanchion pocket and commencing twelve inches upstream of the downstream stoplog slot]. This includes the floor and walls of the upstream sill.

0007 SPECIFICATIONS 03050 What alternatives may be accepted for concrete crystalline waterproofing admixtures?

The following alternatives are acceptable:

- Admix C-500 NF, Xypex Chemical Company, Richmond, BC, Canada

[ - ADI-CON CW PLUS, W.R. Meadows, Inc., Hampshire, IL, United States]

[ - Vapor Lock 20/20, Specialty Products Group, Inc., Smithville, ON, Canada]

0008 PROJECT MANUAL APPENDIX III

Does “Buy America“ apply to the entire project? Does the hydraulic system replacement parts need to meet the Buy America requirement?

The Title IX - Build America, Buy America provisions apply to the entire project per Appendix

III of the Project Manual.

0009 PROJECT MANUAL APPENDIX II

Is the site known to contain asbestos? If asbestos is encountered will its special removal, handling & disposal be paid as additional work?

There has not been any evidence of asbestos observed onsite. However, in the event asbestos is encountered during the project, the special removal, handling, and disposal would be paid as additional work.

0010 SUPPLEMENTAL N/A Can the relevant geotechnical information for the lock be provided? See attached supplemental information documents.

Page 1 of 1 1/5/2024

END ATTACHMENT 2

STOP LOG SLOT PREPARATION

C-04

NOTES:

1. INSPECT AND CLEAN ALL STOPLOGS SLOTS AS NECESSARY PRIOR TO USE.

CONTRACTOR SHALL CLEAN AND PREPARE THE SLOTS TO ALLOW FOR AN

ADEQUATE SEALING SURFACE FOR DEWATERING THE LOCK.

2. INSPECT STOPLOGS PRIOR TO INSTALLATION. DOWNSTREAM STOPLOG WAS

UNABLE TO BE INSPECTED.

3. INSPECT UPSTREAM BEAM POCKET AND REMOVE SEDIMENT TO FACILITATE

STANCHION INSTALLATION.

4. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO SUPPLY ALL NECESSARY

STEEL ELEMENTS FOR CONSTRUCTION AND IMPLEMENTATION OF THE CHOSEN

DEWATERING SYSTEM. EXISTING ELEMENTS SHALL BE INSPECTED AND ANALYZED

BY AN ENGINEER REGISTERED IN THE STATE OF MICHIGAN. ANY DIFFERENT

UPSTREAM AND DOWNSTREAM BULKHEAD SYSTEMS SHALL BE DESIGNED BY AN

ENGINEER REGISTERED IN THE STATE OF MICHIGAN, AND SUBMITTED TO THE

ENGINEER FOR REVIEW AND ACCEPTANCE PRIOR TO USE.

5. REMOVE CONCRETE CAREFULLY TO ENSURE OVER EXCAVATION IS AVOIDED. TAKE

CARE TO NOT OVER DEMOLISH CONCRETE. RETAIN A RELIABLE AND CONTINUOUS

SEALING SURFACE. CONTRACTOR TO REPAIR ANY DEMOLITION BEYOND SLOT

EXTENTS TO THE SATISFACTION OF THE ENGINEER.

6. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO ACCURATELY MEASURE AND

CONFIRM ALL PERTINENT DIMENSIONS.

7. THE TOP OF THE MIDDLE VERTICAL STANCHION WILL REQUIRE BRACING.

TEMPORARY SUPPORTS ANTICIPATED TO BE ADDED ON TOP OF THE CONCRETE

LOCK STRUCTURE.

SCALE:

0 1 2

1" = 1'

A

C-03 UPSTREAM STOPLOG

SLOT REMEDIATION

SECTION

SCALE:

0 4 8

1" = 4'

B

C-03 DOWNSTREAM STOPLOG

SLOT REMEDIATION

SECTION

12"X12" TIMBER SILL HELD

IN PLACE BY 4

MECHANICAL ANCHORS

EXISTING TIMBER CRIB

6"X6" STEEL-LINED

STOPLOG SLOT

EXISTING CONCRETE APRON

MITER GATE

1' -6

SEE NOTE 7

1'-0"

1/

8"

12"X14"

STEEL-LINED

STOPLOG SLOT

\\geiconsulta B:\Working\DTMB\1904013 Cheboygan Lock Facility - Repair and Reno\CAD\Design\Working\STOP LOG SLOT PREPARATION.dwg - 1/4/2024

MICHIGAN DEPARTMENT OF

TECHNOLOGY, MANAGEMENT AND

BUDGET

GEI Project 1904013

If this scale bar does not measure 1" then drawing is not original scale.

Attention: CHEBOYGAN LOCK FACILITY IMPROVEMENT PROJECT

CHEBOYGAN, MI

GEI CONSULTANTS OF MICHIGAN, P.C.

109 W. BARAGA AVENUE

MARQUETTE, MI 49855

(906)451-4021

Consultants

0 1"

NO. DATE ISSUE/REVISION APP

A 12/1/2023 ISSUE FOR BID SAE

B 1/5/2024 ADDENDUM NO. 1 SAE

Designed:

Checked:

Drawn:

JEP

KAR

JEP

Approved By: SAE

SHEET NO.

DWG. NO.

OF 24

ISSUE FOR BID

B B

REMOVE ALL DEBRIS

AND SEDIMENT FROM

STANCHION POCKET

REMOVE DEBRIS AND

CONCRETE OVER POUR

FROM BOTTOM CORNER OF

STOP LOG SLOTS

APPX. 1-2 CFT(SEE NOTE 5).

SEE DIVE REPORT FOR

FURTHER INFORMATION

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12" MIN

12" MIN

~3" SHOTCRETE OVERLAY #1

ORIGINAL CONCRETE

XXXX

~3" SHOTCRETE OVERLAY #2

~2" SHOTCRETE OVERLAY #3

WELDED WIRE MESH REINFORCEMENT

#4 BAR, 12" OC, EW

#4 BAR, 12" OC, EW

(INTERIOR LAYER NOTED IN ONLY 1 OF 8 CORES)

REMOVE OVERLAYS AND REINFORCEMENT UNTIL REACHING

COMPETENT ORIGINAL CONCRETE, MIN. 8" DEPTH

ORIGINAL CONCRETE

STRUCTURAL

CONCRETE

#5 BAR @ 12" OC EW

#5 DOWELS STD HOOK @ 18"

OC, ALTERNATE HOOK

DIRECTION MIN 12" EMBED

WITH STRUCTURAL EPOXY

4" CLEAR COVER

BONDING

AGENT

ORIGINAL

CONCRETE SLAB

STRUCTURAL CONCRETE

#5 BAR @ 12" OC EW

#5 DOWELS STD HOOK @ 24"

OC, ALTERNATE HOOK

DIRECTION MIN 6" EMBED

3" CLEAR COVER

BONDING

AGENT

18"

6" +/- 0.5"

CONCRETE

REMOVALEXISTING WWM REINFORCEMENT

XXXXX

ORIGINAL

CONCRETE SLAB

REMOVE OVERLAYS AND REINFORCEMENT

UNTIL REACHING COMPETENT ORIGINAL

CONCRETE, MAX 8" DEPTH

ORIGINAL CONCRETE

STRUCTURAL

CONCRETE

#5 BAR @ 12" OC EW

#5 DOWELS STD HOOK @ 18"

OC, ALTERNATE HOOK

DIRECTION MIN 12" EMBED

WITH STRUCTURAL EPOXY

BONDING

AGENT

CHAMFER CORNER

OF CONCRETE WALLS

2"X45 DEG (TYP.)3" CLEAR (MIN)

4" CLEAR COVER

CONCRETE REPAIR DETAILS

C-05

10 20

SCALE:

1" = 10'

- TYPICAL EXISTING LOCK WALL

DETAIL

10 20

SCALE:

1" = 10'

- TYPICAL LOCK WALL REPAIR

DETAIL - PLAN VIEW

EXISTING CONCRETE CONDITION TABLE

CONCRETE LAYER APPROXIMATE DEPTH FROM

SURFACE OF CONCRETE CONDITION COMMENTARY

SHOTCRETE OVERLAY #1 0" - 3"

- ROUGH SCREEDED SURFACE, FINE CEMENTITIOUS

SHOTCRETE OVERLAY

- FAIR CONDITION

- OCCASIONAL SPALLING AND CRACKING OBSERVED

- WELDED WIRE MESH REINFORCEMENT ~2" FROM SURFACE

SHOTCRETE OVERLAY #2 3" - 6"

- VERY POOR CONDITION

- SOFT, CRUMBLING MATERIAL, SEVERAL SAND POCKET

LOCATIONS, MINIMAL TO NO STRENGTH CONSISTENCY- #4

REINFORCEMENT EACH WAY ~2 - 3" FROM SURFACE

SHOTCRETE OVERLAY #3 6" - 8"

- POOR TO FAIR CONDITION

- PRESENCE OF THIS OVERLAY VARIES BY LOCATION AS

OVERLAY#2 OCCASIONALLY REACHED ORIGINAL CONCRETE

AT 8"+ DEPTH

- #4 REINFORCEMENT EACH WAY ~10" FROM SURFACE

ORIGINAL CONCRETE 8"+

- REINFORCEMENT UNKNOWN

- FAIR TO GOOD CONDITION

- NO DETERIORATION OBSERVED

- DEPTH TO COMPETENT CONCRETE TYPICALLY OBSERVED

AT ~8", WITH MAXIMUM OF 12" DEPTH

NOTES:

1. DEPTHS ARE APPROXIMATE AND MAY VARY BY LOCATION. CONTRACTOR SHALL REMOVE CONCRETE UNTIL REACHING SOUND CONCRETE AS INDICATED BY HAMMER SOUNDINGS IN PRESENCE OF ENGINEER OR QUALIFIED INSPECTOR. SURFACE OF SOUND CONCRETE SHALL BE CLEANED AND ROUGHENED TO 1/4"

AMPLITUDE WITH NO MICRO CRACKS PRESENT.

2. CONDITION ASSESSMENTS BASED ON A COMPREHENSIVE VISUAL INSPECTION AND THE TESTING OF (8) CONCRETE CORES PERFORMED BY GEI IN SEPTEMBER 2019. CONCRETE CORE PHOTOS, LAB TESTING

REPORTS, ETC. AVAILABLE UPON REQUEST.

10 20

SCALE:

1" = 10'

- TYPICAL LOCK FLOOR REPAIR

DETAIL - ALTERNATE SCOPE #1

CONCRETE REPAIR LOCATION TABLE

FEATURE APPROXIMATE AREA OF

REPAIR REQUIRED (SFT)

DEPTH OF

REPAIR (IN)

APPROXIMATE VOLUME OF

REPAIR (CYD)

LEFT WALL 2,850 10 90

RIGHT WALL 2,850 10 90

UPSTREAM MITER

GATE SILL WALL 280 10 10

FLOOR (ALTERNATE

SCOPE #1) 2,640 6 50

NOTES:

1. CONTRACTOR SHALL MAINTAIN ALL EXISTING CONSTRUCTION JOINTS IN

CONCRETE THROUGH OVERLAYS. LOCATION OF EXISTING CONSTRUCTION

JOINTS UNKNOWN DUE TO PREVIOUS SHOTCRETE REPAIRS.

2. REPAIR DETAILS APPLY TO ALL EXPOSED CONCRETE SURFACES INSIDE OF THE

LOCK BEGINNING TWELVE INCHES DOWNSTREAM OF THE UPSTREAM STANCHION

POCKET AND COMMENCING TWELVE INCHES UPSTREAM OF THE DOWNSTREAM

STOPLOG SLOT. THIS INCLUDES THE FLOOR AND WALLS OF THE UPSTREAM SILL.

3. CONTRACTOR SHALL INSTALL 6 OPEN STANDPIPE PIEZOMETERS IN ORDER TO

MONITOR UPLIFT PRESSURES BENEATH THE STRUCTURE PRIOR TO AND DURING

DEWATERED CONDITIONS (SEE SHEET C-05).

10 20

SCALE:

1" = 10'

- TYPICAL EXISTING LOCK FLOOR

DETAIL

10 20

SCALE:

1" = 10'

A

C-05 TYPICAL LOCK WALL REPAIR

SECTION

TOP OF CONC

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\\geiconsulta B:\Working\DTMB\1904013 Cheboygan Lock Facility - Repair and Reno\CAD\Design\Working\CONCRETE REPAIR DETAILS.dwg - 11/13/2023

MICHIGAN DEPARTMENT OF

TECHNOLOGY, MANAGEMENT AND

BUDGET

GEI Project 1904013

If this scale bar does not measure 1" then drawing is not original scale.

Attention: CHEBOYGAN LOCK FACILITY IMPROVEMENT PROJECT

CHEBOYGAN, MI

GEI CONSULTANTS OF MICHIGAN, P.C.

109 W. BARAGA AVENUE

MARQUETTE, MI 49855

(906)451-4021

Consultants

0 1"

NO. DATE ISSUE/REVISION APP

A 12/1/2023 ISSUE FOR BID SAE

B 1/5/2024 ADDENDUM NO. 1 SAE

Designed:

Checked:

Drawn:

JEP

KAR

JEP

Approved By: SAE

SHEET NO.

DWG. NO.

OF 24

ISSUE FOR BIDB

PROPOSED MITER GATE STRUCTURAL DETAILS

S-04

21 2

SCALE, FEET

- STEEL PINTLE

SHOE

DETAIL

21 2

SCALE, FEET

- BRONZE PINTLE SOCKET

DETAIL

21 2

SCALE, FEET

- BRONZE

PINTLE CAP

DETAIL

21 2

SCALE, FEET

- STEEL PINTLE SOCKET

DETAIL

INSTALL 1"Ø THREADED ANCHORS 12"

DEPTH MIN. AT QUADRANTS OF SHOE

UTILIZE HILTI HY-200R EPOXY (TYP)

R2"

R4"

1'-2"

3" 1/ 2"

1"

R5 1/2"

C OF PIVOTL

SHEET NOTES:

1. CONTRACTOR SHALL FIELD VERIFY LOCATION OF EXISTING PINTLE SHOE

PLATE AND PIVOT POINT. SURVEY LOCATION AS NECESSARY TO FACILITATE

REPLACEMENT OF SHOE IN THE SAME POSITION AS PIVOT POINT LOCATION IS

CRITICAL TO SUCCESSFUL GATE OPERATION.

2. CONTRACTOR TO REPLACE ALL WEARABLE COMPONENTS OF PINTLE

ASSEMBLY INCLUDING STEEL PINTLE SHOE, BRONZE CAP, BRONZE SOCKET,

AND STEEL SOCKET.

1/2

1/2

2" 2 1/2"

1/2"

1/2" 4" I.D.

INTERFERENCE FIT

(PRESS) - H7/p6

1/2"

CHAMFER 3

16" X 45°

BRONZE CAP FITS OVER 4" DIA. O.D.

STEEL CYLINDER OF PINTLE SHOE

Ø5"

CHAMFER 34" X 45°

BRONZE SOCKET FITS OVER 5" DIA.

O.D. BRONZE CAP. PRESS FIT INTO

STEEL PINTLE SOCKET

5 1/8" I.D. CLEARANCE FIT

(LOOSE RUNNING) - H11/c11

3/4"

2 1/4" 1 1/2"

Ø9 1 /2"

Ø8"

Ø5 1/8"Ø4"

8"Ø SPACER PLATES

13.36" O.D. 3 34" HEIGHT PIPE,

0.312 MIN. WALL THICKNESS

SIZED FOR SNUG FIT INSIDE

14" OD 0.312" QUOIN PIPE

Ø1'-2" 5/16 TYP5/16

8" THICK SPACER PLATES

SIZED AS REQUIRED

CENTER OF PINTLE SHOE AND

SOCKET CENTER OF ROTATION

11/16"

CENTER OF 14" O.D. PIPE AND

13.36" O.D. PIPE SECTION FOR

FABRICATED SOCKET

5/16

5/16

21 2

SCALE, FEET

- PINTLE ASSEMBLY ANCHOR REPAIR

DETAIL

LOCK FLOOR

PINTLE SHOEPINTLE CAP

BRONZE PINTLE

SOCKETSTEEL PINTLE

SOCKET

MITER GATE

QUOIN SHAFT

1" Ø x 1'-0" THREADED ANCHORS

WITH HILTI HIT-HY-200-A ADHESIVE

ANCHORS SHALL BE TRIMMED TO

ALLOW SUFFICIENT CLEARANCE

FOR GATE QUOIN SHAFT

ROTATE SHOE 45 DEG AS

NEEDED TO AVOID GROUTED

ANCHOR HOLES

3/4"

3 3/4"

1/2"

8" I.D.

INTERFERENCE FIT

(PRESS) -H7/p6

1'-2"

UTILIZE JAM NUTS TO

ENSURE CLEARANCE

4" O.D.

INTERFERENCE FIT

(PRESS) - P7/h6

5" O.D. CLEARANCE FIT

(LOOSE RUNNING) - C11/h11

8" I.D. CLEARANCE FIT

(LOOSE RUNNING) - H11/c11

1/2 1

SCALE, FEET

- PINTLE ASSEMBLY

DETAIL

GATE QUOIN SHAFT

STEEL PINTLE SOCKET

BRONZE PINTLE SOCKET

BRONZE PINTLE CAP

STEEL PINTLE SHOE

\\geiconsulta B:\Working\DTMB\1904013 Cheboygan Lock Facility - Repair and Reno\CAD\Design\Working\PROPOSED MITER GATE STRUCTURAL DETAILS.dwg - 8/2/2022

MICHIGAN DEPARTMENT OF

TECHNOLOGY, MANAGEMENT AND

BUDGET

GEI Project 1904013

If this scale bar does not measure 1" then drawing is not original scale.

Attention: CHEBOYGAN LOCK FACILITY IMPROVEMENT PROJECT

CHEBOYGAN, MI

GEI CONSULTANTS OF MICHIGAN, P.C.

109 W. BARAGA AVENUE

MARQUETTE, MI 49855

(906)451-4021

Consultants

0 1"

NO. DATE ISSUE/REVISION APP

A 12/1/2023 ISSUE FOR BID SAE

B 1/5/2024 ADDENDUM NO. 1 SAE

Designed:

Checked:

Drawn:

JEP

KAR

JEP

Approved By: SAE

SHEET NO.

DWG. NO.

OF 24

ISSUE FOR BID

B

B