addendum no. 2 february 26, 2018 · 1 addendum no. 2 february 26, 2018 lake street bascule bridge...
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1
ADDENDUM NO. 2
February 26, 2018
Lake Street Bascule Bridge over the South Branch Chicago River,Structural Repairs
Specification No. 469154
For which proposals will be opened in the office of the Department of ProcurementServices, Room 103, City Hall, 121 North LaSalle Street, Chicago, Illinois 60602, on
March 8, 2018 at 11:00 a.m., Central Time
The Addendum in its entirety can be downloaded and printed from URL address:www.cityofchicago.org/bids
1. The Bid Opening Date has been postponed from March 8, 2018 until March 15,2018 at 11:00 a.m. Central Time.
2. Additional Plans:
a. Catwalks replacement plans S503 to S507 have been developed and areincluded in this Addendum.
b. Revised Plans G002 & S002 have been revised and are included in thisAddendum.
3. Revised Schedule of Prices:
a. Line No. 20 – Code Number Z0012755 – Structural Repair of Concrete(Depth Greater than 5 inches): total quantity is 240 square feet.
b. Remove the schedule of prices and replace with the attached Schedule ofPrices, Addendum 2 - Revised 2/26/18.
4. Additional:
a. Photos of bridge openings during the west trunnion trusses rehabilitationare included in this Addendum.
End of Addendum No. 2
Department of Procurement Services Jamie L. RheeCity of Chicago Chief Procurement Officer
City Funded Instructions and Execution Documents (Rev. August 2017)
SCHEDULE OF PRICES
Addendum 2 – Revised 2.26.18
City Funded Instructions and Execution Documents (Rev. August 2017) 18 Revised
SCHEDULE OF PRICESLAKE STREET BASCULE BRIDGE OVER THE SOUTH BRANCH CHICAGO RIVER STRUCTURAL REPAIRS
CDOT PROJECT NO. E-4-712SPECIFICATION NO. 469154
BALANCED BIDS: Bidder's pricing for each line item should carry its share of the cost of work, plus its share of overhead and profit. Bidders should avoidnominal pricing for some lines and enhanced pricing for other lines. Bids that the Chief Procurement Officer considers in his/her sole opinion to be materiallyunbalanced will be rejected.
ITEM
#
CODE
NUMBERDESCRIPTION UNIT
TOTAL
QUANTITYUNIT PRICE TOTAL COST
1 67100100 MOBILIZATION L. Sum 1
2 ******** TRAFFIC CONTROL AND PROTECTION L. Sum 1
3 ********RAILROAD PROTECTIVE LIABILITY
INSURANCEL. Sum 1
4 ********REMOVAL OF EXISTING
SUPERSTRUCTURESL. Sum 1
5 ********DISMANTLING SHORING SYSTEM,
TRUNNION GIRDERL. Sum 1
6 ********ERECTING SHORING SYSTEM, CTA
COLUMNL. Sum 1
7 ********FURNISHING AND ERECTING
STRUCTURAL STEELL. Sum 1
8 ******** ERECTING STRUCTURAL STEEL L. Sum 1
9 ********REMOVING, FURNISHING AND ERECTING
FIELD IDENTIFIED STEELPound 10,000
10 ********CLEANING AND PAINTING SELECTIVE
STEEL STRUCTURES - EAST LEAFL. Sum 1
11 ********CLEANING AND PAINTING SELECTIVE
STEEL STRUCTURES - WEST LEAFL. Sum
1
Addendum 2 – Revised 2.26.18
City Funded Instructions and Execution Documents (Rev. August 2017) 19 Revised
SCHEDULE OF PRICESLAKE STREET BASCULE BRIDGE OVER THE SOUTH BRANCH CHICAGO RIVER STRUCTURAL REPAIRS
CDOT PROJECT NO. E-4-712SPECIFICATION NO. 469154
BALANCED BIDS: Bidder's pricing for each line item should carry its share of the cost of work, plus its share of overhead and profit. Bidders should avoidnominal pricing for some lines and enhanced pricing for other lines. Bids that the Chief Procurement Officer considers in his/her sole opinion to be materiallyunbalanced will be rejected.
ITEM
#
CODE
NUMBERDESCRIPTION UNIT
TOTAL
QUANTITYUNIT PRICE TOTAL COST
12 ********CONTAINMENT AND DISPOSAL OF LEAD
PAINT CLEANING RESIDUESL SUM 1
13 CDOT5010030 CONCRETE REMOVAL CU YD 185.8
14 ********JACKING OPERATIONS, TRUNNION
GIRDERL SUM 1
15 ******** JACKING OPERATIONS, CTA COLUMN L SUM 1
16 ******** BRIDGE OPERATION AND MAINTENANCE L SUM 1
17 ******** FURNISH & INSTALL PROJECT SIGN EACH 2
18 50300225 CONCRETE STRUCTURES CU YD 7.2
19 50800205 REINFORCEMENT BARS, EPOXY COATED POUND 330
20 Z0012755STRUCTURAL REPAIR OF CONCRETE
(DEPTH GREATER THAN 5 INCHES)SQ FT 240
21 ******** CTA FLAGGING AND TRAINING ALLOWANCE 350,000 $1.00 $350,000
AWARD CRITERIA FIGURE
TOTAL BASE BID
CONSULTANT
DRAWN
CHECKED
APPROVED
DATE
SCALE
CONTRACT NO.
SHEET NO.
NO. BY DATE DESCRIPTION
REVISIONS
DEPARTMENT OF TRANSPORTATION
CITY OF CHICAGO
DIVISION OF ENGINEERING
RLR
PROJECT NO. E-4-712
2 OF 77 SHEETS
MAH/TW
12/13/2017
JMS
N.T.S.
2 KVH 2/22/2018 BID ADDENDUM NO. 2
STRUCTURE NUMBER 016-6029
STRUCTURAL REPAIRS
CHICAGO RIVER
OVER THE SOUTH BRANCH
LAKE STREET BASCULE BRIDGE
SUMMARY OF QUANTITIES
GENERAL NOTES
INDEX OF SHEETS
COVER SHEET
SHEET TITLE
DETOUR PLAN AND TRAFFIC CONTROL NOTES
SHEET TITLE
INDEX OF SHEETS
G004
G003
G002
G001
SHEET NO.
C001
SHEET NO.
G002
CIVIL SHEETS
STRUCTURAL SHEETS, CONTINUED
STRUCTURAL SHEETS
GENERAL SHEETS
S300
S210
S209
S208
S207
S206
S205
S204
S203
S202
S201
S200
S140
S139
S138
S137
S136
S135
S134
S133
S132
S131
S130
S129
S128
S127
S126
S125
S124
S123
S122
S121
S120
S119
S118
S117
S116
S115
S114
S113
S112
S111
S110
S109
S108
S107
S106
S105
S104
S103
S102
S101
S100
S002
S001
SHEET NO.
CTA COLUMN SHORING ELEVATIONS, SECTIONS, & DETAILS
EAST LEAF CTA COLUMNS SHORING
TIMBER PLATFORM MODIFICATIONS
MACHINERY GIRDER ELEVATION 3-3 AND SECTIONS P-P, Q-Q, R-R, & S-S
TRUNNION GIRDER REINFORCEMENT DETAILS M & N
TRUNNION GIRDER REINFORCEMENT SECTIONS H-H, I-I, K-K, & L-L
TRUNNION GIRDER REINFORCEMENT SECTIONS E-E, F-F, & G-G
TRUNNION GIRDER REINFORCEMENT ELEVATION 2-2
TRUNNION GIRDER REINFORCEMENT SECTIONS C-C & D-D
TRUNNION GIRDER REINFORCEMENT SECTIONS A-A & B-B
TRUNNION GIRDER REINFORCEMENT ELEVATION 1-1
TRUNNION GIRDER PARTIAL DEMOLITION ELEVATION
TRUNNION GIRDER REINFORCEMENT PLAN
EAST LEAF TRUNNION GIRDER REINFORCEMENT
CARRYING TRUSS TOP CHORD WEB REPAIR
CARRYING TRUSS TOP CHORD BOTTOM ANGLE REPAIR
CARRYING TRUSS GUSSET PLATE REPAIR 3
CARRYING TRUSS GUSSET PLATE REPAIR 2
CARRYING TRUSS GUSSET PLATE REPAIR 1
MUNSTER STEEL CARRYING TRUSS FIELD BOLT LOCATION FB4
MUNSTER STEEL CARRYING TRUSS FIELD BOLT LOCATION FB3
MUNSTER STEEL CARRYING TRUSS FIELD BOLT LOCATION FB2
MUNSTER STEEL CARRYING TRUSS FIELD BOLT LOCATION FB1
MUNSTER STEEL CARRYING TRUSS SHOP BOLT SCHEDULE SB1
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 25
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 24
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 23
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 22
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 21
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 20
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 19
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 18
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 17
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 16
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 15
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 14
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 13
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 12
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 11
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 10
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 9
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 8
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 7
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 6
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 5
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 4
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 3
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 2
MUNSTER STEEL CARRYING TRUSS SHOP DRAWING 1
MUNSTER STEEL CARRYING TRUSS SHOP ASSEMBLY DIAGRAM SA1
MUNSTER STEEL CARRYING TRUSS ERECTION DIAGRAM E1
CARRYING TRUSS ELEVATIONS OUTBOARD 2
CARRYING TRUSS ELEVATIONS OUTBOARD 1
CARRYING TRUSS ELEVATIONS INBOARD 2
CARRYING TRUSS ELEVATIONS INBOARD 1
EAST LEAF CARRYING TRUSSES REPAIRS
GENERAL NOTES AND BILL OF MATERIALS
GENERAL PLAN AND ELEVATION
SHEET TITLE
S507
S506
S505
S504
S503
S502
S501
S500
S413
S412
S411
S410
S409
S408
S407
S406
S405
S404
S403
S402
S401
S400
SHEET NO.
TRUNNION GIRDER ACCESS PLATFORM STEP SECTIONS
TRUNNION GIRDER ACCESS PLATFORM PLANS, SECTIONS AND DETAILS
PLATFORM OVER MAIN PINION SHAFT PLAN, ELEVATIONS AND DETAILS
MOVABLE LEAF BOTTOM CHORD WALKWAY SECTIONS AND DETAIL
TRUNNION GIRDER ACCESS PLATFORM PLAN
LOWER DECK LATERAL BRACING REPLACEMENT
WEST PIT CONCRETE REMOVAL
ANCHOR COLUMN REPAIRS
MISCELLANEOUS REPAIRS
TRUNNION SHORING TOWER SHOP DRAWING 8
TRUNNION SHORING TOWER SHOP DRAWING 7
TRUNNION SHORING TOWER SHOP DRAWING 6
TRUNNION SHORING TOWER SHOP DRAWING 5
TRUNNION SHORING TOWER SHOP DRAWING 4
TRUNNION SHORING TOWER SHOP DRAWING 3
TRUNNION SHORING TOWER SHOP DRAWING 2
TRUNNION SHORING TOWER SHOP DRAWING 1
TRUNNION SHORING TOWER ERECTION DIAGRAM E2
TRUNNION SHORING TOWER ERECTION DIAGRAM E1
TRUNNION SHORING GRILLAGE LAYOUT AND DETAILS
TRUNNION SHORING ELEVATION 2
TRUNNION SHORING ELEVATION 1
TRUNNION SHORING PLAN AND DETAILS
(INSTALLED UNDER PREVIOUS CONTRACT, SHOWN FOR REFERENCE ONLY)
EAST LEAF TRUNNION GIRDER SHORING PREVIOUSLY INSTALLED
SHEET TITLE
2
CONSULTANT
DRAWN
CHECKED
APPROVED
DATE
SCALE
CONTRACT NO.
SHEET NO.
NO. BY DATE DESCRIPTION
REVISIONS
DEPARTMENT OF TRANSPORTATION
CITY OF CHICAGO
DIVISION OF ENGINEERING
RLR
PROJECT NO. E-4-712
1 OF 77 SHEETS
MAH/TW
12/13/2017
JMS
N.T.S.
1 RLR 2/6/2018 BID ADDENDUM NO. 1
2 RLR BID ADDENDUM NO. 22/22/2018
STRUCTURE NUMBER 016-6029
STRUCTURAL REPAIRS
CHICAGO RIVER
OVER THE SOUTH BRANCH
LAKE STREET BASCULE BRIDGE
PAINTING NOTES
STRUCTURAL NOTES
S002
BILL OF MATERIALS
AND
GENERAL NOTES
ITEM UNIT SUPER SUB TOTAL
1
1
1
1
1
1
Pound
L Sum
Sq Ft 240 240
TOTAL BILL OF MATERIAL
L Sum
L Sum
CONSTRUCTION SEQUENCE NOTES
STEEL PROCUREMENT NOTES
SHORING SYSTEM JACKING NOTES
STRUCTURAL NOTES CONTINUED
10,000 10,000
TRUNNION GIRDER REINFORCEMENT NOTES
overstressed during any step of the removal and replacement process.
State of Illinois showing that all members will remain stable and not become
replacement process and calculations sealed by a Licensed Structural Engineer in the
Contractor shall submit a construction procedure showing each step of the removal and
bridge in all phases of construction. Prior to replacement of steel members, the
carrying trusses, and the Contractor shall be responsible for the stability of the bascule
Jacking of the existing trunnion girder shoring system will not relieve all load from the 4.
jacking is terminated due to „" movement in the CTA tracks.
in the CTA tracks, which ever occurs first. The Contractor shall notify the Engineer if
kips (per tower including existing 240 kips pre-load) or when „" movement is observed
Special Provision "Jacking Operations, Trunnion Girder" and shall be terminated at 1,100
Jacking of the existing trunnion girder shoring system shall be in accordance with the 3.
at both the north and south towers under a previous contract.
The existing trunnion girder shoring system has been installed and loaded to |240 kips 2.
and pedestrian traffic.
All jacking operations shall be performed with the structure closed to CTA, vehicular, 1.
SHORING SYSTEM JACKING NOTES CONTINUED
PROCEDURE
SUGGESTED CARRYING TRUSS DEMOLITION AND ERECTION
which can be obtained from the City of Chicago, 30 North LaSalle Street Chicago, IL 60602.
Plans to be worked in conjunction with existing drawings series 166029002 thru 1660290850, 16.
them.
All exposed edges of concrete must be chamfered ƒ" unless other members are erected flush with 15.
Reinforcement bars must conform to the requirements of ASTM A706 Gr. 60.14.
All construction joints shall be bonded.13.
Reinforcement bars designated (E) shall be Epoxy Coated.12.
other coatings that would prevent solid seating of the connecting parts.
be free of scale, burrs, dirt, or other foreign material, oil, previously applied paint, lacquer, or
All contact surfaces on new and existing steel, including connection bolts, nuts, and washers, shall 11.
this work shall be considered incidental to the pay item to which it pertains.
the outline of the reamed hole. Final holes must be round and may not be oversized. The cost of
new material and field reamed to match existing holes provided the sub-hole is fully contained in
Steel" or "Furnish and Erect Structural Steel". Holes may be sub-punched or sub-drilled in the
approved by the Commissioner and in accordance with the Special Provisions "Erect Structural
to ordering material for fabrication. Holes in the existing structure may be enlarged only as
structure. Bolt and rivet spacings and sizes must be verified in the field by the Contractor prior
The location and diameter of the holes in new connecting material must match holes in the existing 10.
actually furnished at the unit price for the work.
for a change in the scope of the work. However, the Contractor will be paid for the quantity
to construction or ordering material. Such variations shall not be cause for additional compensation
dimensions and details affecting new construction and make necessary approved adjustments prior
and are subject to nominal construction variations. The Contractor shall field verify existing
Plan dimensions and details relative to the existing structure have been taken from existing plans
The Contractor is responsible for proper fitting and assembly of all parts of the proposed work. 9.
must be approved by the Commissioner prior to implementation.
of interfering member or install countersunk bolts as possible mitigating solutions. All modifications
the structure. Where interferences occur, the Contractor shall use clipped washers, trim the edge
verify the fit and clearance of all new components that connect to existing or replaced sections of
attention of the Commissioner for resolution prior to fabrication. Likewise, the Contractor shall
and the Fabricator shall review the drawings for such conflicts in detail and bring them to the
change may cause some interferences and erection conflicts for bolt installation. The Contractor
The Contractor shall note that bolts are used in place of original rivets. It is anticipated that this 8.
Toughness Requirements of the AASHTO/AWS Fracture Control Plan (FCP).
requirements, FCM, unless noted otherwise. All carrying truss repair steel shall meet Notch
carrying elements subject to tensile stresses requiring conformance to fracture critical material
All carrying truss repair steel (Sheets S136-S146), shall be considered non-redundant main load 7.
No field welding is permitted except as specified in the Contract Documents.6.
All structural steel shall be AASHTO M270 (ASTM A709) Grade 50.5.
remain loaded and in-place.
After completion of the structural steel repairs, the CTA column shoring system shall 8.
with the Special Provision "Dismantling Shoring System, Trunnion Girder".
system shall be unloaded, disassembled, and transported to a CDOT facility in accordance
After completion of the structural steel repairs, the existing trunnion girder shoring 7.
Provisions "Jacking Operations, Trunnion Girder" and "Jacking Operations, CTA Column".
be monitored via survey and the shoring systems inspected in accordance with the Special
Before, during, and after jacking the Trunnion Girder and CTA column, the structure shall 6.
CTA tracks.
Contractor shall notify the Engineer if jacking is terminated due to „" movement in the
is observed in the CTA tracks directly above the CTA column, which ever comes first. The
"Jacking Operations, CTA Column" and shall be terminated at 45 kips or when „" movement
Jacking of the CTA column shoring system shall be in accordance with the Special Provision 5.
steel not shown on Sheets S104-S135.
The Contractor shall be responsible for the fabrication and procurement of all structural 5.
as required for erection is the responsibility of the Contractor.
proper installation. Any disassembly of the previously fabricated carrying truss members
not be paid extra for any field adjustments or modifications required to accomplish
carrying truss members. The Contractor is solely responsible for final detailing, and will
The Contractor shall be responsible for erection of all structural steel, including the 4.
bridge to vehicular, pedestrian, and CTA traffic.
shoring system shall be reinstalled and re-loaded to |240 kips prior to reopening the
partial opening of the bridge for material delivery into the pit. The trunnion girder
The trunnion girder shoring system may be unloaded and moved as required to allow for 3.
the Contractor.
disassembly required for placement of the steel into the pit shall be the responsibility of
steel with the fabricator, and unload and store the material at the jobsite. Any
inspect the fabricated material prior to erection, coordinate delivery of the structural
torqued. All gusset plates A1 are loose. It shall be the Contractor's responsibility to
A1A2, A1A3, A1A4, A1A5, A1A6, A1A7 are assembled. The shop bolts are not fully
are fabricated and will be delivered under a separate contract. Carrying truss members
The East Leaf north and south carrying truss members as shown on Sheets S104-S135 2.
Sheets S400-S413.
Trunnion Girder" and "Dismantling Shoring System, Trunnion Girder" and as shown on
unloading, and dismantling the shoring system per Special Provisions "Jacking Operations,
|240 kips under a previous contract. The Contractor is responsible for jacking,
Existing trunnion girder shoring system has been fabricated, installed, and loaded to 1.
existing trunnion girder shoring and CTA column shoring.
Carrying truss repairs (Sheets S100-S140) shall be completed prior to unloading the 5.
(Sheets S300-S413) prior to performing the carrying truss repairs.
Existing trunnion girder shoring system and CTA column shoring system shall be jacked 4.
the existing trunnion girder shoring system or the CTA column shoring system.
Trunnion girder reinforcement (Sheets S200-S209) shall be completed prior to jacking 3.
both the north and south towers under a separate contract.
Existing trunnion girder shoring system has been installed and loaded to |240 kips on 2.
of any utilities shall not be permitted.
Some of the work in this contract is in close proximity to existing utilities. Relocation 1.
Both ends (north and south) of the trunnion girder may be worked on simultaneously.3.
The trunnion girder reinforcement may be installed in any order.2.
trunnion girder reinforcement work.
The trunnion girder shoring system shall be loaded to |240 kips for the duration 1.
Both carrying trusses may be worked on simultaneously.7.
Remove and replace the remaining A1 gusset plate.6.
A1A7. Only one member per carrying truss may be removed and replaced at any time.
Remove and replace the remaining half of carrying truss members A1A2, A1A3, A1A4, and 5.
replaced in Step 2.
Remove and replace the A1 gusset plate corresponding to the side of the carrying truss 4.
one piece. Only one member per carrying truss shall be removed and replaced at any time.
same half of all members should be removed. Remove and replace members A1A6 and A1A5 in
Remove and replace one half (north or south) of members A1A2, A1A3, A1A4, and A1A7. The 3.
demolition and erection.
The carrying truss shall be braced to prevent lateral movement at gusset plate A1 during 2.
review by the commissioner prior to any demolition on the carrying truss.
erection procedure stamped by a Structural Engineer registered in the State of Illinois for
The procedure outlined below is a suggestion. The Contractor shall provide a demolition and 1.
(Depth Greater than 5 Inches)
Structural Repair of Concrete
Coated
Reinforcement Bars, Epoxy
Concrete Structures
Bridge Operation and Maintenance
jacking Operations, CTA Column
Girder
Jacking Operations, Trunnion
Concrete Removal
Paint Cleaning Residues
Containment and Disposal of Lead
Steel Structures - West Leaf
Cleaning and Painting Selective
Steel Structures - East Leaf
Cleaning and Painting Selective
Field Identified Steel
Removing, Furnishing and Erecting
Erecting Structural Steel
Structural Steel
Furnishing and Erecting
Column
Erecting Shoring System, CTA
Trunnion Girder
Dismantling Shoring System,
Removal of Existing Structures 11L Sum
L Sum 1 1
L Sum 1 1
L Sum 1 1
11L Sum
Cu Yd
11L Sum
1L Sum
185.8 185.8
11L Sum
Cu Yd 7.2 7.2
Pound 330330
All motors and machinery shall be properly protected from cleaning and painting work.6.
installed under a separate contract in 2015-2016 may be cleaned by alternate methods.
Structure". When approved by the Commissioner, East Leaf Carrying Truss structural steel
shall be painted in accordance with IDOT GBSP "Cleaning and Painting Existing Steel
The existing structural steel shall be cleaned per near white blast cleaning, SSPC-SP10, and 5.
Structures".
accordance with IDOT GBSP 21 "Cleaning and Painting Contact Surface Areas of Existing
All new structural steel shall be shop primed, and faying surfaces shall be prepared in 4.
the pay item "Cleaning and Painting Structural Steel".
The color of the final finish coat shall match Munsell Glossy 5B 7/1 Gray. Cost included in
All new and existing steel shall be cleaned and painted utilizing Paint System 1 - OZ/E/U. 3.
"Containment and Disposal of Lead Paint Cleaning Residues".
precautions to deal with the presence of lead on this project. See Special Provisions
The existing structural steel coating contains lead. The Contractor shall take appropriate 2.
of the East and West Leaf trunnion girders.
trusses, the bottom 10'-0" of the East and West Leaf anchor columns, and the entire length
The Contractor shall clean and paint all components of the East and West Leaf carrying 1.
Sheets S104-S135 for Erect Structural Steel.
Calculated weight of Erect Structural Steel = 146,100 Lbs (includes 10% for bolts). See 4.
bolts). See Sheets S136-S140 and S202-S209 for Furnish and Erect Structural Steel.
Calculated weight of Furnish and Erect Structural Steel = 73,430 Lbs (includes 10% for 3.
domestically applied.
application of all coatings, epoxy, galvanizing, painting, etc. to metal products shall be
certification that all iron or steel materials meet these domestic source requirements. The
obtain from the iron or steel producer and/or fabricator, in addition to the mill analysis, a
projects shall be domestically manufactured and produced or fabricated. The Contractor shall
Domestic Steel Act: All iron and steel products which are to be incorporated into state 2.
open holes, unless otherwise noted.
Fasteners shall be ASTM A325 Type 1, Mechanically Galvanized Bolts. Bolts ‡"} with •"} 1.
2
CONSULTANT
DRAWN
CHECKED
APPROVED
DATE
SCALE
CONTRACT NO.
SHEET NO.
NO. BY DATE DESCRIPTION
REVISIONS
DEPARTMENT OF TRANSPORTATION
CITY OF CHICAGO
DIVISION OF ENGINEERING
RLR
PROJECT NO. E-4-712
MAH/TW
12/13/2017
JMS
N.T.S.
42'-0" 3'-0"3'-0"7'-0"
3'-
5"
RLR BID ADDENDUM 22/22/2018
OF 77 SHEETS77A
2
STRUCTURE NUMBER 016-6029
STRUCTURAL REPAIRS
CHICAGO RIVER
OVER THE SOUTH BRANCH
LAKE STREET BASCULE BRIDGE
S503
~ Bascule Bottom Chord ~ Carrying Truss
~ Bascule Bottom Chord~ Carrying Truss
~ Machinery Girder
~ Trunnion Girder
TRUNNION GIRDER ACCESS PLATFORM PLAN
A
A
PLAN
ACCESS PLATFORM
TRUNNION GIRDER
~ Access Platform
East Leaf Opp. HandWest Leaf Shown
See Sheet S504
Chord Walkway
Movable Leaf Bottom
See Sheet S504
Chord Walkway
Movable Leaf Bottom
See Sheets S506-S507
Access Platform
Trunnion Girder
REFERENCE FILESCOMPONENT
CARRYING TRUSS TOP CHORD 1660290545 & 1660290546
MOVABLE LEAF BOTTOM CHORD 1660290453
TRUNNION GIRDER 1660290549
See Sheet S505
Pinion Shaft
Platform Over Main
Entire Sheet2
CONSULTANT
DRAWN
CHECKED
APPROVED
DATE
SCALE
CONTRACT NO.
SHEET NO.
NO. BY DATE DESCRIPTION
REVISIONS
DEPARTMENT OF TRANSPORTATION
CITY OF CHICAGO
DIVISION OF ENGINEERING
RLR
PROJECT NO. E-4-712
MAH/TW
12/13/2017
JMS
N.T.S.
1'-11"3'-0"
13'-11"6'-4"
5'-
3"
8'-
11"
|5'-0"
|5'-0"
3'-
6"
4'-
6"
1'-9"
11'-0"
|1'-0"
RLR BID ADDENDUM 2
(V.I.F.)
7Š"
(V.I.F.)
7Š"
Max.
1'-0"
|5'-8" (V.I.F.)
|10"
2/22/2018
OF 77 SHEETS77B
2
STRUCTURE NUMBER 016-6029
STRUCTURAL REPAIRS
CHICAGO RIVER
OVER THE SOUTH BRANCH
LAKE STREET BASCULE BRIDGE
~ Trunnion & Trunnion Girder
East Leaf Bascule (Opp. Hand)West Leaf Bascule
HANDRAIL DETAIL
B
B
Post L2•x2•X‚
‰
‰
‰
‰
Top Rail L2•x2•x‚
‰
‰
BOTTOM CHORD WALKWAY SECTION
SECTION A-A
BOTTOM CHORD WALKWAY SECTION
SECTION B-B
Match Exist. Rivet Holes
w/ (2)-‡"} Bolts
Attach Post to Bottom Chord
S504
Midrail `‚"x2•"
Toeboard `‚"x3•"
of existing rivets.
Contractor shall field verity location
exist rivets in the Bottom Chord.
Guardrail posts shall align with the
Note:
Diamond Plate
…"x20"
T/ Movable Leaf Bottom Chord
(Typ.)
Rivet Hole
Match Exist.
‡"} Bolt
SECTIONS & DETAIL
BOTTOM CHORD WALKWAY
MOVABLE LEAF
shown for clarity.
Handrail and platform step not
Note:
Plate Shall be 8'-8•".
Length of 2'-0". Total Length of
Plates. Plates Shall Have a Max.
& Replace w/ …"x20" Diamond
Remove (7)-Pairs of Lacing Bars
Entire Sheet2REFERENCE FILESCOMPONENT
MOVABLE LEAF BOTTOM CHORD 1660290453
12
1ƒ
CONSULTANT
DRAWN
CHECKED
APPROVED
DATE
SCALE
CONTRACT NO.
SHEET NO.
NO. BY DATE DESCRIPTION
REVISIONS
DEPARTMENT OF TRANSPORTATION
CITY OF CHICAGO
DIVISION OF ENGINEERING
RLR
PROJECT NO. E-4-712
MAH/TW
12/13/2017
JMS
N.T.S.
4"
•"
•"
2"
3•"
1ƒ"
1•"
5" 1'-1•
"
1•"
1•"
1ƒ"
6"
1•"
2‚"
4•"
3"
2'-6"
1'-3"
6'-
4"
(8)-
Spa.
@ 1'-0" = 8'-
0"
(5)-
Spa.
@ 1'-0" = 5'-
0"
1'-4"
1'-4"
2'-0"
1'-1•
"
1•"
1•"
1ƒ"
6"
1•"
4ƒ
"
3"
4•"
3'-10"
6'-4"
2'-0"
2'-6"
•"
•"
RLR BID ADDENDUM 2
3'-
2"
9"
V.I.F.
1"R
1'-4" (Typ.)
1ƒ"
3"
4"
1•"
(V.I.F.)
2‰"
6"
6"
2/22/2018
OF 77 SHEETS77C
2
STRUCTURE NUMBER 016-6029
STRUCTURAL REPAIRS
CHICAGO RIVER
OVER THE SOUTH BRANCH
LAKE STREET BASCULE BRIDGE
Flange Below
in Carrying Truss Top
Match Existing Rivet Hole
•"x2‰" for ‡"}
`…"x3•"x0'-6‚"
`…"x3•"x0'-5"
Ladder Leg
L2•x2•x…
Top Flange Below
Secure to Carrying Truss
ƒ"} Bolt
ƒ"} Bolt (Typ.)
`…"x6"x1'-1•"
Truss
~ Carrying
L6x4x… (Typ.)
Handrail Post (Typ.)
L2•x2•x‚
Bascule Bottom Chord
Ladder Down to
Top Chord
Carrying Truss
Ladder Down to
PLAN SOUTH ELEVATION
L6x4x…
(Typ.)
L2•x2•x‚
(Typ.)
L2•x2•x‚(Typ.)
ƒ"} Ladder Rung
ƒ"} Bolt (Typ.)
L6x4x3/8
`…"x6"x1'-1•"
(Typ.)
L3x3x… Post
(Typ.)
L3x3x… Post
L3x3x… L3x3x…
Platform Leg
L3x3x…
(Typ.)
L3x3x… Post
‰
‰
‰Typ.
(Typ.)
ƒ"} Ladder Rung
‰Typ.
Detail 3 (Typ.)Detail 4 (Typ.)
S505
PLAN, ELEVATIONS & DETAILS
MAIN PINION SHAFT
PLATFORM OVER
Accommodate Rivet Head.
Shims as Required to
Provide Cheese ` or Finger
Top Flange Below to Remain.
Exist. Rivet in Carrying Truss
L6x4x…
East Leaf Opp. HandWest Leaf Shown
PLATFORM BASE PLATE
DETAIL 1
LADDER BASE
DETAIL 2
Detail 1 (Typ.)
Detail 1 (Typ.) Detail 2 (Typ.)
(Typ.)
Shim as Required.
w/ (2)-ƒ"} Bolts.
Attach to Ladder Post
Match Exist. Rivet Holes.
(2)-‡"} Bolts.
Carrying Truss w/
Clip Angles. Attach to
Carrying Truss w/ …"
Attach Ladder Post to
D D
East Leaf Opp. HandWest Leaf Shown
Leaf Bottom Chord
1'-0" Max. to Top of Movable
(Typ.)
Leg (Typ.)
of L3x3 Horizontal
Remove 3" Length
L6x4x…
Looking Up
(Typ.)
L2•x2•x‚
ƒ" Bolt (Typ.)
PLATFORM CONNECTION
DETAIL 3
PLATFORM CONNECTION
DETAIL 4
C C C C
UPPER LADDER CONNECTION
SECTION C-C
Entire Sheet2REFERENCE FILESCOMPONENT
CARRYING TRUSS TOP CHORD 1660290545 & 1660290546
(Typ.)
L3x3x…x0'-7"
WEST ELEVATION - WEST PIT
EAST ELEVATION - EAST PIT
(Similar-See Sheet S506)
CONSULTANT
DRAWN
CHECKED
APPROVED
DATE
SCALE
CONTRACT NO.
SHEET NO.
NO. BY DATE DESCRIPTION
REVISIONS
DEPARTMENT OF TRANSPORTATION
CITY OF CHICAGO
DIVISION OF ENGINEERING
RLR
PROJECT NO. E-4-712
MAH/TW
12/13/2017
JMS
N.T.S.
22'-ƒ"
1'-1"
1'-11•" 5'-9" 5'-9" 5'-9" 2'-10‚"
3'-
0"
1'-8"
6'-
4"
6'-4"
5'-4" 1'-0"
3„"
6„"
1'-0"
(5)-
Spa.
@ 1'-0" = 5'-
0"
6'-4"
2'-7" 10„" 1†"2•"
3'-3"
(Typ.)
1•"*
22'-4"
(Typ.)
•" Gap
(V.I.F.)
6"
(V.I.F.)
6"
(V.I.F.)
1†"
6"
3'-0"
3'-
6"
1'-9"
2'-6ƒ" (V.I.F.)
RLR BID ADDENDUM 2
3'-
7‡
"
3"
1•"
1"R
1'-4"
6'-
6‚" (V.I.F.)
2/22/2018
OF 77 SHEETS77D
2
STRUCTURE NUMBER 016-6029
STRUCTURAL REPAIRS
CHICAGO RIVER
OVER THE SOUTH BRANCH
LAKE STREET BASCULE BRIDGE
Platform Ends
* 2" @ Brackets atPLATFORM BRACKET DETAIL
WT6x13x6'-4"
WT6x13 Bracket
(Typ.)
L4x4x…x0'-9„"
ƒ"} Bolt (Typ.)
Top Flange
Carrying Truss
(Typ.)
Exist. Rivet Hole
‡"} Bolt. Match
L2•x2•x‚ (Typ.)
(Typ.)
Exist. Rivet Holes
‡"} Bolts. Match
w/ (2)-ƒ"} Bolts
to Platform Stringer
Attach Ladder Post
Bracket (Typ.)
WT6x13 Platform
ƒ"} Ladder Rung (Typ.)
(Typ.)
L2•x2•x‚ Ladder Post
Stringer (Typ.)
L6x4x… Platform
(Typ.)
L6x4x…x22'-4" Platform Stringer
(Typ.)
L2•x2•x… Handrail Post
‰
‰
‰
‰
Top Rail L2•x2•x‚
L6x3x… Stringer
Spaced @ 5'-0" Max.
Post L2•x2•X‚
SECTION E-E
w/ (2)-ƒ"} Bolts
Attach Post to Stringer
E
E
SECTION D-D
D
D
TOP CONNECTION
TRUNNION BEARING ACCESS LADDER
DETAIL 5
See Detail 5
Access Ladder
Trunnion Bearing
S506
PLAN, SECTIONS & DETAILS
ACCESS PLATFORM
TRUNNION GIRDER
F
F
Midrail `‚"x 2•"
TRUNNION GIRDER ACCESS PLATFORM PLAN
East Leaf Opp. HandWest Leaf Shown Platform grating not shown for clarity.
Note:
See Section D-D
Platform Handrail
See Notes on S507
1•" FRP Grating
See Notes on S507
1•" FRP Grating
ƒ"} Bolts (Typ.)
Only
Bottom Chord
Movable Leaf
Clip WTs Above
Step
(Typ.)
(Typ.)
Horiz. Leg
Remove L4x4
See Detail 5
Ladder Connection
Entire Sheet2
CONSULTANT
DRAWN
CHECKED
APPROVED
DATE
SCALE
CONTRACT NO.
SHEET NO.
NO. BY DATE DESCRIPTION
REVISIONS
DEPARTMENT OF TRANSPORTATION
CITY OF CHICAGO
DIVISION OF ENGINEERING
RLR
PROJECT NO. E-4-712
MAH/TW
12/13/2017
JMS
N.T.S.
1'-11‚"
4„"
1'-0" 1'-6"
1•"
1•"
6"
9"(Typ.)
1•"
RLR BID ADDENDUM 2
3"
6"
1"R
2/22/2018
OF 77 SHEETS77E
2
STRUCTURE NUMBER 016-6029
STRUCTURAL REPAIRS
CHICAGO RIVER
OVER THE SOUTH BRANCH
LAKE STREET BASCULE BRIDGE
(Typ.)
WT6x13 Bracket
(Typ.)
L6x4x…x1'-9"
1•" FRP Grating
1•" FRP Grating
(Typ.)
WT6x13 Bracket
1•" FRP Grating
Entrance
Cut Vertical Leg at Platform
L6x4x… Platform Stringer
Entrance
Cut Vertical Leg at Platform
L6x4x… Platform Stringer
L6x4x…x1'-9" (Typ.)
1•" FRP Grating
(Typ.)
ƒ"} Bolt
S507
PLATFORM STEP
SECTION F-F
PLATFORM STEP
SECTION G-G
SECTIONS
ACCESS PLATFORM STEP
TRUNNION GIRDER
G
G
FIBER REINFORCED POLYMER (FRP) GRATING NOTES:
REFERENCE FILESCOMPONENT
TRUNNION GIRDER 1660290549
Entire Sheet2
provided.
separate, similar successful installations in the last five (5) years shall be
systems. Additionally, if required, a record of at least five (5) previous,
years of experience in the design and manufacture of similar products and
The grating shall be furnished by manufacturers having a minimum of ten (10) 8.
specifications.
The installation procedure used shall be according to the manufacturer's 7.
erection plans, full details, dimensions, and hardware details.
review and approval. The submittal shall include but shall not be limited to
Shop drawings and calculations shall be submitted to the Comissioner for 6.
load. Deflection is not to exceed L/360.
system are as follows: 50 psf uniform live load or 1000 lbs concentrated live
the design loads for the grating. The design loads for the FRP grating
The manufacturer's published safe recommended loads shall be greater than 5.
of Type 316 SS (stainless steel).
recommendations. All mechanical grating clip assemblies shall be manufactured
The grating shall be attached to supporting members per the manufacturer's 4.
less when tested in accordance with ASTM E-84.
FRP grating shall contain fire retardant with a flame spread rating of 25 or 3.
rods should be below the walking surface of the grating.
two- piece cross rod system to provide a mechanical and chemical lock. Cross
degradation. Bearing bars shall be interlocked and epoxied in place with a
resin rich surface which improves corrosion resistance and resistance to UV
surface of the product shall be provided with a surfacing veil to provide a
reinforcements shall be 60% to 70% of the material weight. The finished
ultraviolet (UV) inhibitors included in the resin formulation. Glass fiber
components shall be manufactured from isophthalic polyester resin with
The grating shall consist of pultruded FRP structural components. These 2.
the pay item "Furnish and Erect Structural Steel".
The cost of furnishing and installing the FRP grating shall be incidental to 1.
for approval.
quality may be submitted with the proper supporting data to the Commissioner
Other products of equal strength, stiffness, corrosion resistance, and overall 13.
materials comply with these notes.
The Contractor must provide a manufacturer's written certification the 12.
in amounts greater that allowed by current EPA requirements.
(6) months old that material proposed as a solution do not contain heavy metal
The manufacturer shall provide proof, via independent testing less than six 11.
and AARR).
quality assurance programs for its facilities or products (UL, DNV, ABS, USCG,
The manufacturer shall provide proof of certification from at least two (2) 10.
The manufacturer shall be certified to the ISO 9001-2000 standard.9.