June 22, 2015 ADDENDUM NO. 1. for. Bridge Structural Grating SPECIFICATION NO

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1 June 22, 2015 ADDENDUM NO. 1 for Bridge Structural Grating SPECIFICATION NO For which bids are scheduled to open in the Bid & Bond Room 103, City Hall, 121 N. LaSalle Street Chicago, Illinois 60602, at 11:00 A.M., on July 24, BIDDERS MUST ACKNOWLEDGE RECEIPT OF THIS ADDENDUM IN THE SPACE PROVIDED ON THE PROPOSAL EXECUTION PAGE NOTICE OF UPDATED PROPOSAL PAGES AND DRAWINGS Updated Proposal Pages: Utilize Proposal Pages labeled Addendum #1 Vendor Question: Where can I find specific information related to the FRP grating concerning sizes of panels and quantities? CDOT Response: For the past 15 years, the City of Chicago has increasingly used FRP grating with a FRP 1/ cover plate (as shown on schematics 3.1 and 3.2) to rehabilitate its movable bridges sidewalk decks. The city owns and maintains an inventory of 36 movable bridges, most of typical bascule bridges. Attached are two examples of usage of such deck systems on the Halsted Street Bascule Bridge over the North Branch Canal, and the 18th Street Bascule Bridge over the South Branch of the Chicago River. Although the width of the sidewalk decks varies from 8' to 13'-6", the most typical width is around 10'; the typical length of a sidewalk deck is about 150' per sidewalk." See attached two supplemental drawings of previous usage of fiberglass panels. ALL REVISIONS INSCRIBED HEREIN WILL BE INCORPORATED INTO THE BID SPECIFICATION PER ADDENDUM NO. 1 END OF ADDENDUM NO. 1 CITY OF CHICAGO DEPARTMENT OF PROCUREMENT SERVICES Jamie L. Rhee CHIEF PROCUREMENT OFFICER Specification: , Addendum No. 1 Bridge Structural Grating, Page 1 of 1

2 City of Chicago Catalog RFQ - Lines by Group PU085C RFQ Header Information Please Respond By RFQ Number 4929 Ship To Location 084- CDOT RM400 For More Information Please Contact ALYCESON GILLESPIE RFQ Description BRIDGE STRUCTURAL GRATING Special Instructions Your Quote is Effective as of RFQ Status In Process Bid/Proposal pricing for all commodity and/or service line items must be based on the standard unit of measure indicated below. Pricing on alternate units of measure may not be accepted. Unit costs must be limited to three decimal places. Each quote must be signed and unit price, extended price and total price must be typed or written in ink. Quotes on "or equal" items must be identified as "alternate" to specified item on the comment line. If quoting an alternate, indicate manufacturer name, model/part/catalog number and attach descriptive literature. Alternate items may not be accepted. Any exceptions to items specified or other terms must be clearly indicated on the bid. RFQ Header Details Contract Type COMMODITIES Specification Target Market NO Procurement Type BID Advertise Date Bid Deposit Required WEB BID Edit Rules GROUP Compliance Officer Compliance Type Description Percentage Type Desc Required % Spec# Page 1 of 5

3 City of Chicago PU085C Catalog RFQ - Lines by Group Line No 1 Goods GRATINGS, STEEL, WELDED, - GALVANIZED, MUST MEET CITY OF SCHEMATIC DRAWING 1.1 Line Type Item Category Commodity Desc Group ID UOM GROUP A Estimated Usage Price Discount or Markup % Extended Price Catalog # / ID, Date and Mfr Comments 2 Goods GRATINGS, STEEL, WELDED, - HEAVY DUTY, GALVANIZED, MUST MEET CITY OF CHICAGO SPECIFICATIONS AND SCHEMATIC DRAWING 1.2 GROUP A 3 Goods STEEL, MILD: BARS, PLATES, RODS, SHEETS, STRIPS, TUBES, ETC., MISC.- BOLT-DOWN PLATE 3/8"X7", GALVANIZED MUST MEET CITY OF SCHEMATIC DRAWINGS 1.3 GROUP A Linear 4 Goods STEEL, MILD: BARS, PLATES, RODS, SHEETS, STRIPS, TUBES, ETC., MISC.- 3" BOLT SLEEVE W/BOLT, NUT & WASHER, GALVANIZED MUST MEET CITY OF CHICAGO SPECIFICATIONS AND SCHEMATIC DRAWINGS 1.3 GROUP A Each 5 Goods STEEL, MILD: BARS, PLATES, RODS, SHEETS, STRIPS, TUBES, ETC., MISC.- 5-3/15" BOLT SLEEVE W/BOLT, NUT & WASHER, GALVANIZED MUST MEET CITY OF SCHEMATIC DRAWINGS 1.3 GROUP A Each 6 Goods BANDING, STEEL, - SIDE TRIM BAR, 1/ X 5-3/16", GALVANIZED, MUST MEET CITY OF CHICAGO SPECIFICATION AND SCHEMATIC DRAWINGS Goods BANDING, STEEL, - END TRIM BAR, 3/8" X 5", GALVANIZED, MUST MEET CITY OF CHICAGO SPECIFICATION AND SCHEMATIC DRAWINGS Goods STEEL, MILD: BARS, PLATES, RODS, SHEETS, STRIPS, TUBES, ETC., MISC.- LIFTING SLEEVE 3" NOMINAL DIAMETER, SCHEDULE 40 PIPE WITH WELD RING GALVANIZED MUST MEET CITY OF CHICAGO SPECIFICATIONS AND SCHEMATIC DRAWINGS 1.5 GROUP A Linear GROUP A Linear GROUP A Each Spec# Page 2 of 5

4 City of Chicago PU085C Catalog RFQ - Lines by Group Line No 9 Goods GRATINGS, STEEL, - PAN FOR HALF DEPTH CONCRETE FILL OR FULL DEPTH CONCRETE FILL, MUST MEET CITY OF CHICAGO SPECIFICATION AND SCHEMATIC DRAWINGS 1.6 Line Type Item Category Commodity Desc Group ID UOM GROUP A Estimated Usage Price Discount or Markup % Extended Price Catalog # / ID, Date and Mfr Comments 10 Goods STEEL, REINFORCING, - NO. 5, EPOXY COATED, MEETING CITY OF CHICAGO SPECIFICATION 11 Goods FORMS, PANS, CONCRETE, - CONCRETE HALF DEPTH CONCRETE FILL OR FULL DEPTH CONCRETE FILL, MUST MEET CITY OF CHICAGO SPECIFICATIONS GROUP A Pound GROUP A Cubic Yard Group GROUP A Total Group Extended Price $ 13 Goods GRATINGS, STEEL, RIVETED, - GALVANIZED, MUST MEET CITY OF SCHEMATIC DRAWING 2.1 GROUP B 14 Goods GRATINGS, STEEL, RIVETED, - WITH ANGLE CONNECTIONS GALVANIZED, MUST MEET CITY OF SCHEMATIC DRAWING 2.2 GROUP B 15 Goods GRATINGS, STEEL, RIVETED, - HEAVY DUTY GALVANIZED, MUST MEET CITY OF CHICAGO SPECIFICATIONS AND SCHEMATIC DRAWING 2.3 GROUP B 16 Goods STEEL, MILD: BARS, PLATES, RODS, SHEETS, STRIPS, TUBES, ETC., MISC.- BOLT-DOWN PLATE 3/8"X7",GALVANIZED MUST MEET CITY OF CHICAGO SPECIFICATIONS AND SCHEMATIC DRAWINGS 2.4 GROUP B Linear 17 Goods BANDING, STEEL, - END TRIM BAR, 1/4" X 5", GALVANIZED, MUST MEET CITY OF CHICAGO SPECIFICATION AND SCHEMATIC DRAWINGS 2.5 GROUP B Linear 18 Goods GRATINGS, STEEL, - PAN FOR HALF DEPTH CONCRETE FILL OR FULL DEPTH CONCRETE FILL, MUST MEET CITY OF CHICAGO SPECIFICATION AND SCHEMATIC DRAWINGS 2.6 GROUP B Spec# Page 3 of 5

5 City of Chicago PU085C Catalog RFQ - Lines by Group Line No Line Type Item Category Commodity Desc Group ID UOM 19 Goods STEEL, REINFORCING, - NO. 5, EPOXY COATED, MEETING CITY OF CHICAGO SPECIFICATION Estimated Usage Price Discount or Markup % GROUP B Pound Extended Price Catalog # / ID, Date and Mfr Comments 20 Goods FORMS, PANS, CONCRETE, - CONCRETE FOR HALF DEPTH CONCRETE FILL OR FULL DEPTH CONCRETE FILL, MUST MEET CITY OF CHICAGO SPECIFICATIONS GROUP B Cubic Yard Group GROUP B Total Group Extended Price $ 22 Goods PLATE, GRATING, & MISC. FIBERGLASS - GRATING, FIBERGLASS REINFORCED POLYMER, WITH COVER PLATE END TRIM AND HARDWARE - 33% OPEN, MUST MEET CITY OF CHICAGO SPECIFICATIONS AND SCHEMATIC DRAWING 3.1 GROUP C 23 Goods PLATE, GRATING, & MISC. FIBERGLASS - GRATING, FIBERGLASS REINFORCED POLYMER, WITH COVER PLATE END TRIM AND HARDWARE - 50% OPEN, MUST MEET CITY OF CHICAGO SPECIFICATIONS AND SCHEMATIC DRAWING 3.2 GROUP C 24 Goods PLATE, GRATING, & MISC. FIBERGLASS - GRATING, FIBERGLASS REINFORCED POLYMER, WITH HARDWARE - 33% OPEN, MUST MEET CITY OF SCHEMATIC DRAWING 3.3 GROUP C 25 Goods PLATE, GRATING, & MISC. FIBERGLASS - GRATING, FIBERGLASS REINFORCED POLYMER, BIKE LANE PLATE WITH HARDWARE - MUST MEET CITY OF SCHEMATIC DRAWING 3.4 GROUP C 26 Goods STEEL, MILD: BARS, PLATES, RODS, SHEETS, STRIPS, TUBES, ETC., MISC.- MISCELLANEOUS STEEL PRODUCTS MUST MEET CITY OF CHICAGO SPECIFICATIONS GROUP C Pound Spec# Page 4 of 5

6 City of Chicago PU085C Catalog RFQ - Lines by Group Line No Line Type Item Category Commodity Desc Group ID UOM 27 Goods PLATE, GRATING, & MISC. FIBERGLASS - MISCELLANEOUS FIBERGLASS REINFORCED POLYMER PRODUCTS - MUST MEET CITY OF CHICAGO SPECIFICATIONS Estimated Usage Price Discount or Markup % GROUP C Pound Extended Price Catalog # / ID, Date and Mfr Comments 28 Goods ISOPHTHALIC OR VINYL ESTER RESIN - MUST MEET CITY OF CHICAGO SPECIFICATIONS GROUP C Pint Group GROUP C Total Group Extended Price $ Total Price $ Spec# Page 5 of 5

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11 ~ TRUSS ~ TRUSS 9-0" 9-0" 2-3" 3-0" 3-0" 2-3" 3-0" 3-0" 1-0" 8-0" 1-0" 8-0" NEW FIBERGLASS SIDEWALK DECK NEW FIBERGLASS SIDEWALK DECK TYPICAL SECTION AT SIDEWALK BRACKET TYPICAL SECTION AT SIDEWALK DIAPHRAGM NOTES: 1. FOR FRAMING PLAN AND LOCATION OF SIDEWALK STRINGERS SEE SHEET S7. 18TH STREET OVER THE SOUTH BRANCH OF THE CHICAGO RIVER CITY OF CHICAGO TYPICAL SIDEWALK CROSS SECTIONS DEPARTMENT OF TRANSPORTATION DIVISION OF ENGINEERING J:\ JUL-2 NO. BY DATE REVISIONS DESCRIPTION STRUCTURE NO North LaSalle Street 30 North LaSalle Street CHICAGO DEPARTMENT Suite 4200 Suite 400 Chicago, IL OF TRANSPORTATION Chicago, IL (312) DRAWN T. THOMPSON CHECKED E. BECQ-GIRAUDON APPROVED E. BECQ-GIRAUDON DATE: 2014 SCALE: NONE CONTRACT NO. SHEET NO. PROJECT NO. S8 DRAWING NO. FILE NO.

12 ~ REAR BREAK IN SIDEWALK " ~ FRONT BREAK RDWY & SIDEWALK EDGE OF FIXED PART SIDEWALK " 8-6" 16-4" 8 TYPICAL 16-4" = 130-8" 16-4" 4-5" 4-1" " 4-1" 4-1" 4-1" 4-1" 4-1" 4-1" 4-1" 4-1" 3-1" 3-1" 2-7" 1 - N DETAIL A S6 ~ TRUSS 9-0" 3-0" 3-0" A A B B 7-9" DIRECTION OF 2-3" BEARING BARS 8-0" DIRECTION OF BEARING BARS 8-0" S5 S4 CUT GRID FOR TRUSS SEE DETAIL B SIDEWALK PANELS LAYOUT NORTH SIDEWALK SHOWN SOUTH SIDEWALK SIMILAR - SYMMETRIC ABOUT CETNERLINE OF ROADWAY ~ RAILING POST ~ REAR BREAK ~ FRONT BREAK NOTES 4" 4" EDGE OF FIXED SIDEWALK 1" IN SIDEWALK EDGE OF MOVABLE SIDEWALK 6" " EDGE OF MOVABLE SIDEWALK " 6" " IN SIDEWALK 1. HSS TUBING SHALL BE ASTM A 500 GRADE B STEEL. 8" " X 6" WITH RAISED PATTERN TOP OF FRP GRATING TOP OF FRP GRATING " X 6" WITH RAISED PATTERN 2. ALL WELDING SHALL BE DONE IN ACCORDANCE WITH AASHTO/AWS D1.5 BRIDGE WELDING CODE. DETAIL A TYPICAL GRID DETAIL TYP. HSS 3x2x TYP. 3. RAISED PATTERN STEEL PLATES SHALL BE ASTM A 786 STEEL. AROUND HANDRAIL POSTS AT PANEL POINTS 2 TO 20 SECTION A-A ~ REAR BREAK IN SIDEWALK " 4-1" 4 - ~ TRUSS BILL OF MATERIAL ITEM UNIT TOTAL FURNISHING AND ERECTING FIBERGLASS SIDEWALK DECK SQ. FT HSS 3x2x SECTION B-B TYPICAL DETAIL AT REAR BREAK TYPICAL DETAIL AT FRONT BREAK 1-7" 1-0" 1-3" 1-18TH STREET OVER THE SOUTH BRANCH OF THE CHICAGO RIVER CITY OF CHICAGO SIDEWALK PANELS LAYOUT DEPARTMENT OF TRANSPORTATION J:\ JUL-2 DETAIL B NO. BY DATE REVISIONS DESCRIPTION STRUCTURE NO North LaSalle Street 30 North LaSalle Street CHICAGO DEPARTMENT Suite 4200 Suite 400 Chicago, IL OF TRANSPORTATION Chicago, IL (312) DIVISION OF ENGINEERING DRAWN J. KIM SHEET NO. CHECKED E. BECQ-GIRAUDON APPROVED E. BECQ-GIRAUDON DATE: 2014 SCALE: NONE CONTRACT NO. PROJECT NO. S9 DRAWING NO. FILE NO.

13 ~ REAR BREAK IN SIDEWALK ~ FRONT BREAK IN SIDEWALK & ROADWAY 0 8-6" 16-4" 16-4" " 4-1" 4-1" 4-1" 4-1" 4-1" 4-1" 4-1" 3-1" 3-1" 2-0" 7" 6" " 3-10" 4-0" 4-0" 4-0" 4-0" 4-0" 4-0" 4-0" 3-0" 3-0" 2-7" " 6" 1-9" 8" 1-5" 3-8" 3" 3" 3-8" 3-8" 3-8" 3-8" 3" 3" 3-8" 3-8" 2-8" 1-7" 11" 6" " " A A B 3" 3" B C 3" 3" C SIDEWALK DECK PLAN PANEL 20 TO REAR BREAK SIDEWALK DECK PLAN PANEL 2-4 TO PANEL SIDEWALK DECK PLAN PANEL 0-2 (FRONT BREAK) 3" 1" 1" 3" 3" 3" 1" 1" 3" 3" 3" 3" 3" 3" 1" 1-8" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-10" 1-4" 1-4" 1-4" 1-4" " 7" SECTION A-A SECTION B-B SECTION C-C CROSS 6" TO MISS ANCHOR BOLT 1" 1" 1" " (COUNTERBORE) ~ ANCHOR BOLT " THICK CORPLATE 1" 1" CORGRATE PULTRUDED BEARING BARS, WT 50 SERIES D " D " THICK CORPLATE 1" 1" " } COUNTERBORE TOP OF STRINGER " } HOLE FOR "} BOLT " ANCHOR BOLT 9" LONG WITH A STANDARD WASHER AND DOUBLE NUT. FIELD DRILL " } HOLE IN STRINGER TOP FLANGE VIEW D-D 18TH STREET OVER THE SOUTH BRANCH OF THE CHICAGO RIVER CITY OF CHICAGO GRATING ATTACHMENT DETAIL SIDEWALK PANELS DETAILS DEPARTMENT OF TRANSPORTATION DIVISION OF ENGINEERING STRUCTURE NO DRAWN T. THOMPSON SHEET NO. J:\ JUL-2 NO. BY DATE REVISIONS DESCRIPTION 30 North LaSalle Street 30 North LaSalle Street CHICAGO DEPARTMENT Suite 4200 Suite 400 Chicago, IL OF TRANSPORTATION Chicago, IL (312) CHECKED E. BECQ-GIRAUDON APPROVED E. BECQ-GIRAUDON DATE: 2014 SCALE: NONE CONTRACT NO. PROJECT NO. S10 DRAWING NO. FILE NO.