10-106793 Addendum No. 1.pdf

00 05 15 - 1

ADDENDA

CITY OF FORT WORTH 2027 HOT IN PLACE RECYCLING CONTRACT 1

STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS City Project No. 106793 Revised July 1, 2011 Addendum No. 1

CITY OF FORT WORTH 1

Transportation and Public Works Department 2

2027 HOT IN PLACE RECYCLING CONTRACT 1 4

CITY PROJECT NO. 106793 5

ADDENDUM NO. 1 7

Addendum No. 1: Issued Tuesday, September 15, 2026 9

Bid Open Date: Thursday, September 24, 2026 11

This Addendum forms part of the Plans, Contract Documents, and specifications for the above-13 referenced Project and modifies the original Specifications and Contract Documents. Bidder shall 14 acknowledge receipt of this addendum in the space provided below, and in the proposal (SECTION 15

00 41 00). Failure to acknowledge receipt of this addendum could subject the bidder to 16 disqualification. 17

The plans and specification documents for 2027 Hot In Place Recycling Contract 1, City Project 19

No. 106793, are hereby revised by Addendum No. 1 as follows: 20

SPECIFICATIONS & CONTRACT DOCUMENTS: 22

a. SECTION 00 00 00 – Replace the TABLE OF CONTENTS in its entirety with the 23 attached revised TABLE OF CONTENTS. 24

b. SECTION 32 12 16 – Add the attached revised ASPHALT PAVING to the contract 25 specifications. 26

c. SECTION SD-1.00 – Replace the STANDARD CONSTRUCTION DETAILS in its 27 entirety with the attached revised STANDARD CONSTRUCTION DETAILS. 28

The attendees asked the following questions during the pre-bid conference and on Bonfire. The 30

City of Fort Worth’s responses are below. 31

Question 1: Can you please provide the special specification for the Asphalt Spot Repair along 33 with a typical section? 34

Response 1: The revised SECTION 32 12 16 includes the specifications for the asphalt base 35 repair under H.M.A.C. BASE REPAIR. The revised SD-1.00 also includes a typical section detail 36 for the asphalt base repair areas. The specific base repair locations and dimensions will be 37 identified during field inspections. 38

This Addendum No. 1 forms part of the Plans, Specifications, and Contract Documents for the 40 above-referenced project and modifies the original Project Manual and Contract Documents of 41 the same. 42

Acknowledge your receipt of Addendum No. 1 by completing the requested information in the 43 space provided in Section 00 41 00, Bid Form, Page 3 of 3. 44

A signed copy of Addendum No. 1 should be included in the submitted sealed bid at the time of 46 bid submittal. Failure to acknowledge the receipt of Addendum No. 1 could cause the subject 47 bidder to be considered “NONRESPONSIVE,” resulting in disqualification. 48

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ADDENDA

Revised July 1, 2011 Addendum No. 1

Addendum No. 1 1

RECEIPT ACKNOWLEDGEMENT: Lauren Prieur, P.E. 3

Director, Transportation & Public Works 4

By: _____________________________ By: _____________________________ 6

Company: _______________________ Zelalem Arega, P.E. 7

Address: ________________________ Engineering Manager 8

City: ___________ State: ___________ 9

END OF SECTION 10

Zelalem Arega (Sep 14, 2026 12:00:57 CDT) https://fortworthtexas.na1.adobesign.com/verifier?tx=CBJCHBCAABAAOH00A81sZ48HEVh8byzfTUYD3GHiO6VZ

Adopted September 2011

City of Fort Worth Standard Construction Specification

Documents

00 00 00

STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS

CITY OF FORT WORTH 2027 HOT IN PLACE RECYCLING CONTRACT 1

STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS City Project No. 106793 Revised June 5, 2026 Addendum No. 1

SECTION 00 00 00

TABLE OF CONTENTS

Division 00 - General Conditions Last Revised 00 05 10 Mayor and Council Communication 07/01/2011 00 05 15 Addenda 07/01/2011 00 11 13 Invitation to Bidders 02/08/2024 00 21 13 Instructions to Bidders 09/01/2025 00 35 13 Conflict of Interest Statement 06/05/2026 00 41 00 Bid Form 09/19/2025 00 42 43 Proposal Form Unit Price 09/30/2021 00 43 13 Bid Bond 09/30/2021 00 43 37 Vendor Compliance to State Law Nonresident Bidder 09/30/2021 00 45 11 Bidders Prequalifications 08/13/2021 00 45 12 Prequalification Statement 09/30/2021 00 45 13 Prequalification Application 06/13/2025 00 45 26 Contractor Compliance with Workers' Compensation Law 07/01/2011 00 45 41 Small Business Goal 9/01/2025 00 45 42 Small Business Waiver 6/05/2026 00 52 43 Agreement 9/19/2025 00 61 13 Performance Bond 12/08/2023 00 61 14 Payment Bond 12/08/2023 00 61 19 Maintenance Bond 9/19/2025 00 61 25 Certificate of Insurance 07/01/2011 00 72 00 General Conditions 09/01/2025 00 73 00 Supplementary Conditions 9/19/2025

Division 01 - General Requirements Last Revised 01 11 00 Summary of Work 12/20/2012 01 25 00 Substitution Procedures 07/01/2011 01 29 75 Materials On Hand 9/19/2025 01 31 19 Preconstruction Meeting 09/01/2025 01 31 20 Project Meetings 07/01/2011 01 32 16 Construction Schedule 10/06/2023 01 32 33 Preconstruction Video 07/01/2011 01 33 00 Submittals 12/20/2012 01 35 13 Special Project Procedures 03/11/2022 01 45 23 Testing and Inspection Services 03/09/2020 01 50 00 Temporary Facilities and Controls 09/19/2025 01 55 26 Street Use Permit and Modifications to Traffic Control 06/05/2026 01 57 13 Storm Water Pollution Prevention Plan 07/01/2011 01 58 13 Temporary Project Signage 07/01/2011 01 60 00 Product Requirements 03/09/2020 01 66 00 Product Storage and Handling Requirements 07/01/2011 01 70 00 Mobilization and Remobilization 11/22/2016 01 71 23 Construction Staking and Survey 02/14/2018 01 74 23 Cleaning 07/01/2011 01 77 19 Closeout Requirements 03/22/2021 01 78 23 Operation and Maintenance Data 12/20/2012

CITY OF FORT WORTH 2027 HOT IN PLACE RECYCLING CONTRACT 1

STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS City Project No. 106793 Revised June 5, 2026 Addendum No. 1

01 78 39 Project Record Documents 07/01/2011

Technical Specifications which have been modified by the Engineer specifically for this Project; hard copies are included in the Project’s Contract Documents

Division 32 - Exterior Improvements Date

Modified 32 11 23 Flexible Base Courses 07/18/2026 32 12 16 Asphalt Paving 09/14/2026 32 13 20 Concrete Sidewalks, Driveways and Barrier Free Ramps 07/18/2026 32 91 19 Topsoil Placement and Finishing of Parkways 07/18/2026 Division 34 - Transportation 34 71 13 Traffic Control 07/18/2026 Division 99 – Additional Specification 99 99 99 Additional Specification 07/18/2026

Technical Specifications listed below are included for this Project by reference and can be viewed/downloaded from the City’s website at:

http://fortworthtexas.gov/tpw/contractors/ or https://apps.fortworthtexas.gov/ProjectResources/

Division 02 - Existing Conditions Last Revised 02 41 13 Selective Site Demolition 03/11/2022 02 41 14 Utility Removal/Abandonment 12/20/2012 02 41 15 Paving Removal 02/02/2016

Division 03 - Concrete 03 30 00 Cast-In-Place Concrete 06/13/2025 03 34 13 Controlled Low Strength Material (CLSM) 03/07/2025 03 34 16 Concrete Base Material for Trench Repair 12/20/2012 03 80 00 Modifications to Existing Concrete Structures 12/20/2012

Division 26 - Electrical 26 05 00 Common Work Results for Electrical 03/11/2022 26 05 10 Demolition for Electrical Systems 12/20/2012 26 05 33 Raceways and Boxes for Electrical Systems 12/20/2012 26 05 43 Underground Ducts and Raceways for Electrical Systems 07/01/2011 26 05 50 Communications Multi-Duct Conduit 02/26/2016

Division 31 - Earthwork 31 00 00 Site Clearing 03/22/2021 31 23 16 Unclassified Excavation 01/28/2013 31 23 23 Borrow 01/28/2013 31 24 00 Embankments 01/28/2013 31 25 00 Erosion and Sediment Control 04/29/2021 31 36 00 Gabions 12/20/2012 http://fortworthtexas.gov/tpw/contractors/ https://apps.fortworthtexas.gov/ProjectResources/ http://fortworthtexas.gov/tpw/contractors/ https://apps.fortworthtexas.gov/ProjectResources/

CITY OF FORT WORTH 2027 HOT IN PLACE RECYCLING CONTRACT 1

STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS City Project No. 106793 Revised June 5, 2026 Addendum No. 1

31 37 00 Riprap 12/20/2012

Division 32 - Exterior Improvements 32 01 17 Permanent Asphalt Paving Repair 12/20/2012 32 01 18 Temporary Asphalt Paving Repair 03/20/2026 32 01 28 Full-Depth Concrete Pavement Panel Replacement and Spall and

Crack Repair 03/20/2026

32 01 29 Concrete Paving Trench Repair 12/12/2025 32 11 23 Flexible Base Courses 12/20/2012 32 11 29 Lime Treated Base Courses 12/20/2012 32 11 33 Cement Treated Base Courses 06/10/2022 32 11 37 Liquid Treated Soil Stabilizer 08/21/2015 32 12 16 Asphalt Paving 6/07/2024 32 12 73 Asphalt Paving Crack Sealants 12/20/2012 32 13 13 Concrete Paving 06/13/2025 32 13 20 Concrete Sidewalks, Driveways and Barrier Free Ramps 12/09/2022 32 13 73 Concrete Paving Joint Sealants 12/20/2012 32 14 16 Brick Unit Paving 12/20/2012 32 16 13 Concrete Curb and Gutters and Valley Gutters 12/09/2022 32 17 23 Pavement Markings 06/10/2022 32 17 25 Curb Address Painting 11/04/2013 32 31 13 Chain Fences and Gates 12/20/2012 32 31 26 Wire Fences and Gates 12/20/2012 32 31 29 Wood Fences and Gates 12/20/2012 32 32 13 Cast-in-Place Concrete Retaining Walls 06/05/2018 32 91 19 Topsoil Placement and Finishing of Roadway Right-of-ways 03/11/2022 32 92 13 Sodding 05/13/2021 32 92 14 Non-Native Seeding 05/13/2021 32 92 15 Native Grass and Wildflower Seeding 10/06/2023 32 93 43 Trees and Shrubs 12/20/2012

Division 33 - Utilities 33 01 30 Sewer and Manhole Testing 09/07/2018 33 01 31 Closed Circuit Television (CCTV) Inspection – Sanitary Sewer 03/11/2022 33 01 32 Closed Circuit Television (CCTV) Inspection – Storm Drain 12/08/2023 33 03 10 Bypass Pumping of Existing Sewer Systems 12/20/2012 33 04 10 Joint Bonding and Electrical Isolation 12/20/2012 33 04 11 Corrosion Control Test Stations 12/20/2012 33 04 12 Magnesium Anode Cathodic Protection System 12/20/2012 33 04 30 Temporary Water Services 09/19/2025 33 04 40 Cleaning and Acceptance Testing of Water Mains 02/06/2013 33 04 50 Cleaning of Pipes 03/11/2022 33 05 10 Utility Trench Excavation, Embedment, and Backfill 06/13/2025 33 05 12 Water Line Lowering 12/20/2012 33 05 13 Frame, Cover and Grade Rings 09/09/2022

33 05 14 Adjusting Manholes, Inlets, Valve Boxes, and Other Structures to Grade 03/11/2022

33 05 16 Concrete Water Vaults 12/12/2025 33 05 17 Concrete Collars 03/11/2022 33 05 20 Auger Boring 12/20/2012

CITY OF FORT WORTH 2027 HOT IN PLACE RECYCLING CONTRACT 1

STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS City Project No. 106793 Revised June 5, 2026 Addendum No. 1

33 05 21 Tunnel Liner Plate 12/20/2012 33 05 22 Steel Casing Pipe 12/20/2012 33 05 23 Hand Tunneling 12/20/2012 33 05 24 Installation of Carrier Pipe in Casing or Tunnel Liner Plate 12/09/2022 33 05 26 Utility Markers/Locators 12/20/2012 33 05 30 Location of Existing Utilities 12/20/2012 33 11 05 Bolts, Nuts, and Gaskets 12/20/2012 33 11 10 Ductile Iron Pipe 12/09/2022 33 11 11 Ductile Iron Fittings 09/20/2017 33 11 12 Polyvinyl Chloride (PVC) Pressure Pipe 09/09/2022 33 11 13 Concrete Pressure Pipe, Bar-Wrapped, Steel Cylinder Type 03/07/2025 33 11 14 Buried Steel Pipe and Fittings 12/20/2012 33 12 10 Water Services 1-inch to 2-inch 12/12/2025 33 12 11 Large Water Meters 12/12/2025 33 12 20 Resilient Seated Gate Valve 05/06/2015 33 12 21 AWWA Rubber-Seated Butterfly Valves 04/23/2019 33 12 25 Connection to Existing Water Mains 02/06/2013 33 12 30 Combination Air Valve Assemblies for Potable Water Systems 12/20/2012 33 12 40 Fire Hydrants 01/03/2014 33 12 50 Water Sample Stations 12/12/2025 33 12 60 Standard Blow-off Valve Assembly 06/19/2013 33 31 12 Cured in Place Pipe (CIPP) 12/20/2012 33 31 13 Fiberglass Reinforced Pipe for Gravity Sanitary Sewers 12/20/2012 33 31 15 High Density Polyethylene (HDPE) Pipe for Sanitary Sewer 04/23/2019 33 31 20 Polyvinyl Chloride (PVC) Gravity Sanitary Sewer Pipe 09/09/2022

33 31 21 Polyvinyl Chloride (PVC) Closed Profile Gravity Sanitary Sewer Pipe 12/20/2012

33 31 22 Sanitary Sewer Slip Lining 12/20/2012 33 31 23 Sanitary Sewer Pipe Enlargement 12/20/2012 33 31 50 Sanitary Sewer Service Connections and Service Line 04/26/2013 33 31 70 Combination Air Valve for Sanitary Sewer Force Mains 12/20/2012 33 39 10 Cast-in-Place Concrete Manholes 12/13/2024 33 39 20 Precast Concrete Manholes 12/13/2024 33 39 30 Fiberglass Manholes 12/13/2024 33 39 40 Wastewater Access Chamber (WAC) 12/20/2012 33 39 60 Liners for Sanitary Sewer Structures 04/29/2021 33 41 10 Reinforced Concrete Storm Sewer Pipe/Culverts 07/01/2011 33 41 11 High Density Polyethylene (HDPE) Pipe for Storm Drain 12/20/2012 33 41 12 Reinforced Polyethylene (SRPE) Pipe 11/13/2015 33 41 13 Polypropylene Pipe for Storm Drain 06/10/2022 33 46 00 Subdrainage 12/20/2012 33 46 01 Slotted Storm Drains 07/01/2011 33 46 02 Trench Drains 07/01/2011 33 49 10 Cast-in-Place Manholes and Junction Boxes 12/13/2024 33 49 20 Curb and Drop Inlets 03/11/2022 33 49 40 Storm Drainage Headwalls and Wingwalls 07/01/2011

Division 34 - Transportation 34 41 10 Traffic Signals 03/11/2022 34 41 10.01 Attachment A – Controller Cabinet 12/18/2015

CITY OF FORT WORTH 2027 HOT IN PLACE RECYCLING CONTRACT 1

STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS City Project No. 106793 Revised June 5, 2026 Addendum No. 1

34 41 10.02 Attachment B – Controller Specification 02/2012 34 41 10.03 Attachment C – Software Specification 01/2012 34 41 11 Temporary Traffic Signals 11/22/2013 34 41 13 Removing Traffic Signals 03/11/2022 34 41 20 Roadway Illumination Assemblies 12/20/2012 34 41 20.01 Arterial LED Roadway Luminaires 06/15/2015 34 41 20.02 Freeway LED Roadway Luminaires 06/15/2015 34 41 20.03 Residential LED Roadway Luminaires 06/15/2015 34 41 25 Residential Solar Powered Roadway Illumination Assemblies 12/12/2025 34 41 30 Aluminum Signs 11/12/2013 34 41 50 Single-Mode Fiber Optic Cable 02/26/2016 34 71 13 Traffic Control 06/05/2026

Appendix GC-4.02 Subsurface and Physical Conditions GC-6.07 Wage Rates GR-01 60 00 Product Requirements GN-1.0 General Notes SD-1.0 Standard Construction Details PQ-1.0 Project Maps and Quantities PQ-2.0 Pavement Marking Plans

END OF SECTION

32 12 16 - 1

ASPHALT PAVING

Revised June 7, 2024 Addendum No. 1

SECTION 32 12 16 1

ASPHALT PAVING 2

PART 1 - GENERAL 3

1.1 SUMMARY 4

A. Section Includes: 5

1. Constructing a hot-mix asphalt (HMA) pavement layer composed of a compacted, 6 dense-graded, or Superpave mixture of aggregate and asphalt binder for surface or 7 base courses 8

B. Deviations from this City of Fort Worth Standard Specification 9

1. H.M.A.C. BASE REPAIR 10

a. MEASUREMENT 11

1) MEASUREMENT FOR THIS ITEM SHALL BE BY THE CUBIC YARD 12

OF COMPLETED AND ACCEPTED H.M.A.C. BASE REPAIR IN ITS 13

FINAL POSITION FOR THE VARIOUS THICKNESSES AND ASPHALT 14

MIX TYPES. 15

b. PAYMENT 16

1) THE WORK PERFORMED AND MATERIALS FURNISHED IN 17

ACCORDANCE WITH THIS ITEM AND MEASURED AS PROVIDED 18

UNDER “MEASUREMENT” WILL BE PAID FOR AT THE UNIT PRICE 19

BID PER CUBIC YARD OF ASPHALT BASE REPAIR. 20

c. THE PRICE BID SHALL INCLUDE: 21

1) EXCAVATING, SHAPING, AND FINE GRADING THE REPAIR AREA 22

2) FURNISHING, LOADING, UNLOADING, STORING, HAULING AND 23

HANDLING ALL MATERIALS INCLUDING FRIGHT AND ROYALITY. 24

3) MATERIALS AND WORK NEEDED FOR CORRECTIVE ACTION 25

4) REMOVAL AND/OR SWEEPING OF EXCESS MATERIALS 26

C. Related Specification Sections include, but are not necessarily limited to: 27

1. Division 0 - Bidding Requirements, Contract Forms, and Conditions of the Contract 28

2. Division 1 - General Requirements 29

3. Section 32 01 17 - Permanent Asphalt Paving Repair 30

1.2 PRICE AND PAYMENT PROCEDURES 31

A. Measurement and Payment 32

1. Asphalt Pavement 33

a. Measurement 34

1) Measurement for this Item shall be by the square yard of completed and 35 accepted asphalt pavement in its final position for various: 36

a) Thicknesses 37

b) Types 38

b. Payment 39

1) The work performed and materials furnished in accordance with this Item 40 and measured as provided under “Measurement” will be paid for at the unit 41 price bid per 42

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Revised June 7, 2024 Addendum No. 1

c. The price bid shall include: 1

1) Shaping and fine-grading the placement area 2

2) Furnishing, loading, unloading, storing, hauling, and handling all materials 3 including freight and royalty 4

3) Traffic control for all testing during construction activities. 5

4) Asphalt, aggregate, and additive 6

5) Materials and work needed for corrective action 7

6) Trial batches 8

7) Tack coat 9

8) Removal and/or sweeping excess material 10

2. H.M.A.C. Transition 11

a. Measurement 12

1) Measurement for this Item shall be by the ton of composite Hot Mix 13

Asphalt required for H.M.A.C. Transition. 14

b. Payment 15

1) The work performed and materials furnished in accordance with this Item 16 and measured as provided under “Measurement” will be paid for at the unit 17 price bid per ton of Hot Mix Asphalt. 18

c. The price bid shall include: 19

1) Shaping and fine-grading the roadbed 20

2) Furnishing, loading, unloading, storing, hauling, and handling all materials 21 including freight and royalty 22

3) Traffic control for all testing during construction activities. 23

4) Asphalt, aggregate, and additive 24

5) Materials and work needed for corrective action 25

6) Trial batches 26

7) Tack coat 27

8) Removal and/or sweeping excess material 28

3. Asphalt Base Course 29

a. Measurement 30

1) Measurement for this Item shall be by the square yard of Asphalt Base 31

Course completed and accepted in its final position for: 32

a) Various thicknesses 33

b) Various types 34

b. Payment 35

1) The work performed and materials furnished in accordance with this Item 36 and measured as provided under “Measurement” will be paid for at the unit 37 price bid per square yard of Asphalt Base Course. 38

c. The price bid shall include: 39

1) Shaping and fine-grading the roadbed 40

2) Furnishing, loading, unloading, storing, hauling, and handling all materials 41 including freight and royalty 42

3) Traffic control for all testing during construction activities. 43

4) Asphalt, aggregate, and additive 44

5) Materials and work needed for corrective action 45

6) Trial batches 46

7) Tack coat 47

8) Removal and/or sweeping excess material 48

4. H.M.A.C. Pavement Level Up 49

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Revised June 7, 2024 Addendum No. 1

a. Measurement 1

1) Measurement for this Item shall be by the ton of H.M.A.C. completed and 2 accepted in its final position. 3

b. Payment 4

1) The work performed and materials furnished in accordance with this Item 5 and measured as provided under “Measurement” will be paid for at the unit 6 price bid per ton of H.M.A.C. 7

c. The price bid shall include: 8

1) Shaping and fine-grading the roadbed 9

2) Furnishing, loading, unloading, storing, hauling, and handling all materials 10 including freight and royalty 11

3) Traffic control for all testing during construction activities. 12

4) Asphalt, aggregate, and additive 13

5) Materials and work needed for corrective action 14

6) Trial batches 15

7) Tack coat 16

8) Removal and/or sweeping excess material 17

5. H.M.A.C. BASE REPAIR 18

a. MEASUREMENT 19

1) MEASUREMENT FOR THIS ITEM SHALL BE BY THE CUBIC YARD 20

OF COMPLETED AND ACCEPTED H.M.A.C. BASE REPAIR IN ITS 21

FINAL POSITION FOR THE VARIOUS THICKNESSES AND ASPHALT 22

MIX TYPES. 23

b. PAYMENT 24

1) THE WORK PERFORMED AND MATERIALS FURNISHED IN 25

ACCORDANCE WITH THIS ITEM AND MEASURED AS PROVIDED 26

UNDER “MEASUREMENT” WILL BE PAID FOR AT THE UNIT PRICE 27

BID PER CUBIC YARD OF ASPHALT BASE REPAIR. 28

c. THE PRICE BID SHALL INCLUDE: 29

1) EXCAVATING, SHAPING, AND FINE GRADING THE REPAIR AREA 30

2) FURNISHING, LOADING, UNLOADING, STORING, HAULING AND 31

HANDLING ALL MATERIALS INCLUDING FRIGHT AND ROYALITY. 32

3) MATERIALS AND WORK NEEDED FOR CORRECTIVE ACTION 33

4) REMOVAL AND/OR SWEEPING OF EXCESS MATERIALS 34

6. H.M.A.C. Speed Cushion 35

a. Measurement 36

1) Measurement for this Item shall be per each H.M.A.C. Speed Cushion 37 installed. 38

b. Payment 39

1) The work performed and materials furnished in accordance with this Item 40 and measured as provided under “Measurement” will be paid for at the unit 41 price bid per each H.M.A.C. Speed Cushion installed and accepted in its final 42 position. 43

c. The price bid shall include: 44

1) Shaping and fine-grading the roadbed 45

2) Furnishing, loading, unloading, storing, hauling, and handling all materials 46 including freight and royalty 47

3) Traffic control for all testing during construction activities. 48

4) Asphalt, aggregate, and additive 49

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Revised June 7, 2024 Addendum No. 1

5) Materials and work needed for corrective action 1

6) Trial batches 2

7) Tack coat 3

8) Removal and/or sweeping excess material 4

1.3 REFERENCES 5

A. Abbreviations and Acronyms 6

1. RAP (reclaimed asphalt pavement) 7

2. SAC (surface aggregate classification) 8

3. BRSQC (Bituminous Rated Source Quality Catalog) 9

4. AQMP (Aggregate Quality Monitoring Program) 10

5. H.M.A.C. (Hot Mix Asphalt Concrete) 11

6. WMA (Warm Mix Asphalt) 12

B. Reference Standards 13

1. Reference standards cited in this specification refer to the current reference standard 14 published at the time of the latest revision date logged at the end of this 15 specification unless a date is specifically cited. 16

2. National Institute of Standards and Technology (NIST) 17

a. Handbook 44 - 2007 Edition: Specifications, Tolerances, and Other Technical 18

Requirements for Weighing and Measuring Devices 19

3. ASTM International (ASTM): 20

a. ASTM D6084 - 06 Standard Test Method for Elastic Recovery of Bituminous 21

Materials by Ductilometer 22

4. American Association of State Highway and Transportation Officials 23

a. MP2 Standard Specification for Superpave Volumetric Mix Design 24

b. PP28 Standard Practice for Superpave Volumetric Design for Hot Mix Asphalt 25

(HMA) 26

c. T 201, Kinematic Viscosity of Asphalts (Bitumens) 27

d. T 202 Standard Method of Test for Viscosity of Asphalts by Vacuum Capillary 28

Viscometer 29

e. T 316 Standard Method of Test for Viscosity Determination of Asphalt Binder 30

Using Rotational Viscometer 31

f. TP 1-93 Test Method for Determining the Flexural Creep Stiffness of Asphalt 32

Binder Using the Bending Beam Rheometer (BBR) 33

5. Texas Department of Transportation 34

a. Bituminous Rated Source Quality Catalog (BRSQC) 35

b. TEX 100-E, Surveying and Sampling Soils for Highways 36

c. Tex 106-E, Calculating the Plasticity Index of Soils 37

d. Tex 107-E, Determining the Bar Linear Shrinkage of Soils 38

e. Tex 200-F, Sieve Analysis of Fine and Coarse Aggregates 39

f. Tex 203-F, Sand Equivalent Test 40

g. Tex-204-F, Design of Bituminous Mixtures 41

h. Tex-207-F, Determining Density of Compacted Bituminous Mixtures 42

i. Tex 217-F, Determining Deleterious Material and Decantation Test for Coarse 43

Aggregates 44

j. Tex-226-F, Indirect Tensile Strength Test 45

k. Tex-227-F, Theoretical Maximum Specific Gravity of Bituminous Mixtures 46

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Revised June 7, 2024 Addendum No. 1

l. Tex-243-F, Tack Coat Adhesion 1

m. Tex-244-F, Thermal profile of Hot Mix Asphalt 2

n. Tex 280-F, Determination of Flat and Elongated Particles 3

o. Tex 406-A, Material Finer Than 75 μm (No. 200) Sieve in Mineral Aggregates 4

(Decantation Test for Concrete Aggregates) 5

p. Tex 408-A, Organic Impurities in Fine Aggregate for Concrete 6

q. Tex 410-A, Abrasion of Coarse Aggregate using the Los Angeles Machine 7

r. Tex 411-A, Soundness of Aggregate by Using Sodium Sulfate or Magnesium 8

s. Tex 460-A, Determining Crushed Face Particle Count 9

t. Tex 461-A, Degradation of Coarse Aggregate by Micro-Deval Abrasion 10

u. Sulfate 11

v. Tex-530-C, Effect of Water on Bituminous Paving Mixtures 12

w. Tex-540-C, Measurement of Polymer Separation on Heating in Modified 13

Asphalt Systems 14

x. Tex-541-C, Rolling Thin Film Oven Test for Asphalt Binders 15

y. Tex-920-K, Verifying the Accuracy of Drum Mix Plant Belt Scales 16

z. Tex-921-K, Verifying the Accuracy of Hot Mix Plant Asphalt Meters 17

aa. Tex 923-K, Verifying the Accuracy of Liquid Additive Metering Systems 18

1.4 ADMINISTRATIVE REQUIREMENTS [NOT USED] 19

1.5 ACTION SUBMITTALS [NOT USED] 20

1.6 ACTION SUBMITTALS/INFORMATIONAL SUBMITTALS 21

A. Asphalt Paving Mix Design: The City will review and approve all mix designs before the 22 contractor can begin production of the mix. When submitting mix designs to the City for 23 review, include the following items in the report. 24

1. The combined aggregate gradation, source, specific gravity, and percent of each 25 material used; 26

2. Asphalt binder content and grade 27

3. Asphalt binder content and aggregate gradation of RAP stockpiles; 28

4. the Ndesign level used; 29

5. Results of all applicable tests; 30

6. The mixing and molding temperatures; 31

7. The signature of the person or persons that performed the design; 32

8. The date the mixture design was performed; and 33

9. A unique identification number for the mixture design. 34

1.7 CLOSEOUT SUBMITTALS [NOT USED] 35

1.8 MAINTENANCE MATERIAL SUBMITTALS [NOT USED] 36

1.9 QUALITY ASSURANCE [NOT USED] 37

1.10 DELIVERY, STORAGE, AND HANDLING [NOT USED] 38

1.11 FIELD CONDITIONS 39

A. Weather Conditions 40

32 12 16 - 6

Revised June 7, 2024 Addendum No. 1

1. Place mixture when the roadway surface temperature is equal to or higher than the 1 temperatures listed in Table 1. 2

Table 1 3

Minimum Pavement Surface Temperatures 4

Minimum Pavement Surface Temperatures in

Degrees Fahrenheit

Originally Specified High

Temperature Binder Grade

Subsurface Layers or

Night Paving Operations

Surface Layers Placed in Daylight Operations

PG64 45 50

PG 70 551 601

PG 76 601 601

1.Contractors may pave at temperatures 10°F lower than the values shown in Table 5

1 when utilizing a paving process including WMA or equipment that eliminates 6 thermal segregation. In such cases, the contractor must use either a hand-held 7 thermal camera or a hand-held infrared thermometer operated in accordance with 8

Tex-244-F to demonstrate to the satisfaction of the City that the uncompacted mat 9 has no more than 10° F of thermal segregation. 10

2. Unless otherwise shown on the Drawings, place mixtures only when weather 11 conditions and moisture conditions of the roadway surface are suitable in the 12 opinion of the City. 13

1.12 WARRANTY [NOT USED] 15

PART 2 - PRODUCTS 16

2.1 OWNER-FURNISHED PRODUCTS [NOT USED] 17

2.2 MATERIALS 18

A. General 19

1. Furnish uncontaminated materials of uniform quality that meet the requirements of 20 the plans and specifications. 21

2. Notify the City of all material sources. 22

3. Notify the City before changing any material source or formulation. 23

4. When the Contractor makes a source or formulation change, the City will verify 24 that the requirements of this specification are met and may require a new laboratory 25 mixture design, trial batch, or both. 26

5. The City may sample and test project materials at any time during the project to 27 verify compliance. 28

6. The depth of the compacted lift should be at least 2 times the nominal maximum 29 aggregate size. 30

B. Aggregate 31

1. General 32

a. Furnish aggregates from sources that conform to the requirements shown in 33

Table 2, and as specified in this Section, unless otherwise shown on the 34

Drawings. 35

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Revised June 7, 2024 Addendum No. 1

b. Provide aggregate stockpiles that meet the definition in this Section for either 1 coarse aggregate or fine aggregate. 2

c. When reclaimed asphalt pavement (RAP) is allowed by Drawing note, provide 3

RAP stockpiles in accordance with this Section. 4

d. Aggregate from RAP is not required to meet Table 2 requirements unless 5 otherwise shown on the Drawings. 6

e. Supply mechanically crushed gravel or stone aggregates that meet the 7 definitions in Tex 100 E. 8

f. Samples must be from materials produced for the project. 9

g. The City will establish the surface aggregate classification (SAC) and perform 10

Los Angeles abrasion, magnesium sulfate soundness, and Micro-Deval tests. 11

h. Perform all other aggregate quality tests listed in Table 2. 12

i. Document all test results on the mixture design report. 13

j. The City may perform tests on independent or split samples to verify Contractor 14 test results. 15

k. Determine aggregate gradations for mixture design and production testing based 16 on the washed sieve analysis given in Tex 200 F, Part II. 17

Table 2

Aggregate Quality Requirements

Property Test Method Requirement

Coarse Aggregate

SAC Tex-499-A(AQMP) As shown on Drawings

Deleterious material, %, max Tex-217-F, Part I 1.0

Decantation, %, max Tex-217-F, Part II 1.5

Micro-Deval abrasion, %, max Tex-461-A Note 1

Los Angeles abrasion, %, max Tex-410-A 35

Magnesium sulfate soundness, 5 cycles, %, max Tex-411-A 25

Crushed face count, %, Min Tex 460-A, Part I 852

Flat and elongated particles @ 5:1, %, max Tex-280-F 10

Fine Aggregate

Linear shrinkage, %, max Tex-107-E 3

Combined Aggregate3

Sand equivalent, %, min Tex-203-F 45

1. Used to estimate the magnesium sulfate soundness loss

2. Only applies to crushed gravel.

3. Aggregates, without mineral filler, RAP, RAS, or additives, combined as used in the job-mix formula (JMF).

l. Coarse Aggregate 19

1) Coarse aggregate stockpiles must have no more than 20 percent material 20 passing the No. 8 sieve. 21

2) Maximum aggregate size should not be over half of the proposed lift depth 22 to prevent particle on particle contact issues. 23

3) Provide aggregates from sources listed in the BRSQC. 24

4) Provide aggregate from unlisted sources only when tested by the City 25 and/or approved before use. 26

5) Allow 30 calendar days for the City to sample, test, and report results for 27 unlisted sources. 28

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Revised June 7, 2024 Addendum No. 1

6) Class B aggregate meeting all other requirements in Table 2 may be 1 blended with a Class A aggregate in order to meet requirements for Class A 2 materials. 3

7) When blending Class A and B aggregates to meet a Class A requirement, 4 ensure that at least 50 percent by weight of the material retained on the No. 4 5 sieve comes from the Class A aggregate source. 6

8) Blend by volume if the bulk specific gravities of the Class A and B 7 aggregates differ by more than 0.300. 8

9) When blending, do not use Class C or D aggregates. 9

10) For blending purposes, coarse aggregate from RAP will be considered as 10

Class B aggregate. 11

11) Provide coarse aggregate with at least the minimum SAC shown on the 12

Drawings. 13

12) SAC requirements apply only to aggregates used on the surface of travel 14 lanes, unless otherwise shown on the Drawings. 15

m. RAP is salvaged, milled, pulverized, broken, or crushed asphalt pavement. 16

1) No RAP permitted for TxDOT TYPE D H.M.A.C. 17

2) Use no more than 15% Fractionated RAP on Superpave surface course 18 mixes and 20% Fractionated RAP for base course mixes unless otherwise 19 shown on the Drawings. Also, the recycled binder to total binder ratio must 20 not exceed 15% for surface courses and 20% for base courses. 21

3) Crush or break RAP so that 100 percent of the particles pass the 2-inch 22 sieve. 23

4) RAP from either Contractor or City, including RAP generated during the 24 project, is permitted only when shown on the Drawings. 25

5) City-owned RAP, if allowed for use, will be available at the location 26 shown on the Drawings. 27

6) When RAP is used, determine asphalt content and gradation for mixture 28 design purposes. 29

7) Perform other tests on RAP when shown on the Drawings. 30

8) When RAP is allowed by plan note, use no more than 30 percent RAP in 31

Type A or B mixtures unless otherwise shown on the Drawings. 32

9) Do not use RAP contaminated with dirt or other objectionable materials. 33

10) Do not use the RAP if the decantation value exceeds 5 percent and the 34 plasticity index is greater than 8. 35

11) Test the stockpiled RAP for decantation in accordance with the laboratory 36 method given in Tex-406-A, Part I. 37

12) Determine the plasticity index using Tex-106-E if the decantation value 38 exceeds 5 percent. 39

13) The decantation and plasticity index requirements do not apply to RAP 40 samples with asphalt removed by extraction. 41

14) Do not intermingle Contractor-owned RAP stockpiles with City-owned 42

RAP stockpiles. 43

15) Remove unused Contractor-owned RAP material from the project site upon 44 completion of the project. 45

16) Return unused City-owned RAP to the designated stockpile location. 46

n. Fine Aggregate 47

1) Fine aggregates consist of manufactured sands, screenings, and field sands. 48

2) Fine aggregate stockpiles must meet the gradation requirements in Table 3. 49

3) Supply fine aggregates that are free from organic impurities. 50

32 12 16 - 9

Revised June 7, 2024 Addendum No. 1

4) The City may test the fine aggregate in accordance with Tex-408-A to 1 verify the material is free from organic impurities. 2

5) At most 15 percent of the total aggregate may be field sand or other 3 uncrushed fine aggregate. 4

6) With the exception of field sand, use fine aggregate from coarse aggregate 5 sources that meet the requirements shown in Table 2, unless otherwise 6 approved. 7

7) If 10 percent or more of the stockpile is retained on the No. 4 sieve, test the 8 stockpile and verify that it meets the requirements in Table 2 for coarse 9 aggregate angularity (Tex-460-A) and flat and elongated particles 10

(Tex-280-F). 11

Table 3

Gradation Requirements for Fine Aggregate

Sieve Size % Passing by Weight or Volume

3/8" 100

#8 70–100

#200 0–30

2. Mineral Filler 13

a. Mineral filler consists of finely divided mineral matter such as agricultural lime, 14 crusher fines, hydrated lime, cement, or fly ash. 15

b. Mineral filler is allowed unless otherwise shown on the Drawings. 16

c. Do not use more than 2 percent hydrated lime or cement, unless otherwise 17 shown on the Drawings. The Drawings may require or disallow specific mineral 18 fillers. When used, provide mineral filler that: 19

1) Is sufficiently dry, free-flowing, and free from clumps and foreign matter; 20

2) Does not exceed 3 percent linear shrinkage when tested in accordance with 21

Tex-107-E; and meets the gradation requirements in Table 4. 22

Table 4 23 Gradation Requirements for Mineral Filler 24

Sieve Size % Passing by Weight or Volume

#8 100

#200 55–100

3. Baghouse Fines 26

a. Fines collected by the baghouse or other dust-collecting equipment may be 27 reintroduced into the mixing drum 28

4. Asphalt Binder and Mix Types 29

a) Surface Course: Use TxDOT dense-graded DG-D with virgin PG 70-22 30

(no recycled materials such as recycled asphalt shingles or reclaimed 31 asphalt pavement) or Superpave SP-D with PG 70-22 as summarized in 32

Table 5. 33

b) Base Course: use PG 64-22 SP-B or TxDOT DG-B mixes for base 34 courses. 35

c) Hand Paving: When hand paving is allowed, PG64-22 can be used for 36 surface courses. 37

32 12 16 - 10

Revised June 7, 2024 Addendum No. 1

Table 5 1 Asphalt Binder and Mixture Requirements 2

Pavement Layer Mixture Requirement

Surface Course

PG 70-22 Superpave SP-D

Virgin PG 70-22 TxDOT DG-D (No recycled material)

Binder Course PG 64-22 TxDOT DG-B

PG 64-22 Superpave SP-B

a. Separation testing is not required if: 3

1) A modifier is introduced separately at the mix plant either by injection in 4 the asphalt line or mixer, 5

2) The binder is blended on site in continuously agitated tanks, or binder 6 acceptance is based on field samples taken from an in-line sampling port at 7 the hot mix plant after the addition of modifiers. 8

5. Tack Coat 9

a. Unless otherwise shown on the Drawings or approved, furnish CSS-1H, SS-1H, 10 or a PG binder with a minimum high-temperature grade of PG 58 for tack coat 11 binder in accordance with Section 2.2.A.5. 12

6. Additives 13

a. General 14

1) When shown on the Drawings, use the type and rate of additive specified. 15

2) Other additives that facilitate mixing or improve the quality of the mixture 16 may be allowed when approved. 17

b. Liquid Antistripping Agent 18

1) Furnish and incorporate all required asphalt antistripping agents in asphalt 19 concrete paving mixtures and asphalt-stabilized base mixtures to meet 20 moisture resistance testing requirements. 21

2) Provide a liquid antistripping agent that is uniform and shows no evidence 22 of crystallization, settling, or separation. 23

3) Ensure that all liquid antistripping agents arrive in: 24

a) Properly labeled and unopened containers, as shipped from the 25 manufacturer, or 26

b) Sealed tank trucks with an invoice to show contents and quantities 27

c) Provide product information to the City including: 28

(1) Material safety data sheet 29

(2) Specific gravity of the agent at the manufacturer’s recommended 30 addition temperature, 31

(3) Manufacturer’s recommended dosage range, and 32

(4) Handling and storage instructions 33

4) Addition of lime or a liquid antistripping agent at the Mix Plant, 34 incorporate into the binder as follows: 35

a) Handle in accordance with the manufacturer’s recommendations. 36

b) Add at the manufacturer’s recommended addition temperature. 37

c) Add into the asphalt line by means of an in-line-metering device. 38

c. Liquid Asphalt Additive Meters 39

1) Provide a means to check the accuracy of meter output for asphalt primer, 40 fluxing material, and liquid additives. 41

2) Furnish a meter that reads in increments of 0.1 gal. or less. 42

3) Verify accuracy of the meter in accordance with Tex-923-K. 43

4) Ensure the accuracy of the meter within 5.0 percent. 44

32 12 16 - 11

Revised June 7, 2024 Addendum No. 1

7. Mixes 1

a. Design Requirements 2

1) Superpave mixes: Use the Superpave design procedure provided in Tex-3

204-F to design the mixture meeting the requirements listed in Tables 2, 3, 4, 4

5, 6, 7, and 8. 5

a) Design the mixture at 50 gyrations (Ndesign). Use a target laboratory-6 molded density of 96.0% to design the mixture; however, adjustments can 7 be made to the Ndesign value as noted in Table 8. The Ndesign level may 8 be reduced to at least 35 gyrations at the Contractor’s discretion. 9

b) Provide Hamburg Wheel and indirect tensile strength tests and provide 10 results with the mixture design meeting the requirements in Table 7 and 8. 11

Table 6 13

Superpave Mix Master Gradation Limits (% Passing by Weight or Volume) 14 and VMA Requirements for Superpave mixes 15

Sieve Size SP-B

Intermediate

SP-C

Surface

SP-D

Fine Mixture

2″ – – –

1-1/2″ 100.01 – –

1″ 98.0–100.0 100.01 –

3/4″ 90.0–100.0 98.0–100.0 100.01

1/2″ Note2 90.0–100.0 98.0–100.0

3/8″ — Note2 90.0–100.0

#4 23.0–90.0 28.0–90.0 32.0–90.0

#8 23.0–34.6 28.0–37.0 32.0–40.0

#16 2.0–28.3 2.0–31.6 2.0–37.6

#30 2.0–20.7 2.0–23.1 2.0–27.5

#50 2.0–13.7 2.0–15.5 2.0–18.7

#200 2.0–8.0 2.0–10.0 2.0–10.0

Design VMA, % Minimum

14.0 15.0 16.0

Production (Plant-Produced) VMA, % Minimum

13.5 14.5 15.5

1. Defined as Ma sieve size. No tolerance allowed. 16

2. Must retain at least 10% cumulative. 17

Table 7 20 Hamburg Wheel Test Requirements 21

High-Temperature Binder Grade

Test Method Minimum # of Passes @ 12.5 mm Rut Depth, Tested @ 50°C

PG 64

Tex-242-F

10,000

PG 70 15,000

PG 76 20,000

Table 8 23 Laboratory Mixture Design Properties 24

Mixture Property Test Method Requirement

Target laboratory-molded density, % Tex-207-F 96.0

Design gyrations (Ndesign) Tex-241-F 501

Indirect tensile strength (dry), psi Tex-226-F 85–2002

Dust/asphalt binder ratio – 0.6–1.43

Boil test4 Tex-530-C – http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit242.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit207.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit241.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit226.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/500-C_series/pdfs/aph530.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit242.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit207.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit241.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit226.pdf http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/500-C_series/pdfs/aph530.pdf

32 12 16 - 12

Revised June 7, 2024 Addendum No. 1

1. Adjust within a range of 35–100 gyrations when shown on the plans or specification or 1 mutually agreed between the Engineer and Contractor. 2

2. The City may allow the IDT strength to exceed 200 psi if the corresponding Hamburg Wheel 3 rut depth is greater than 3.0 mm and less than 12.5 mm. 4

3. Defined as % passing #200 sieve divided by asphalt binder content (only for Superpave 5 mixes). 6

4. Used to establish baseline for comparison to production results. May be waived when 7 approved. 8

2) Dense-Graded Mixes: Us a Superpave Gyratory Compactor to design a 10 dense-graded mixture using the procedure provided in Tex-204-F that 11 meets the requirements listed in Tables 2, 3, 4, 5, 7, 8, and 9. 12

a) Design the mixture at 50 gyrations (Ndesign). Use a target laboratory-13 molded density of 96.0% to design the mixture; however, adjustments can 14 be made to the Ndesign value as noted in Table 8. The Ndesign level may 15 be reduced to at least 35 gyrations at the Contractor’s discretion. The 16 target density may be increased to 97% or 97.5% when shown on the 17 plans or specification. 18

b) A Texas Gyratory Compactor (TGC) may be used when shown on the 19 plans. 20

c) Provide Hamburg Wheel and indirect tensile strength tests and provide 21 results with the mixture design meeting the requirements in Table 7 and 8. 22

Table 9

Dense-Graded Mix Master Gradation Limits ( % Passing by Weight or

Volume) and VMA Requirements for dense graded mixes

Sieve

Size

DG-B

Fine Base

DG-C

Coarse Surface

DG-D

Fine Surface

2" – – –

1-1/2" 100 – –

1" 98.0–100.0 100 –

3/4" 84.0–98.0 95.0–100.0 100

1/2" – – 98.0–100.0

3/8" 60.0–80.0 70.0–85.0 85.0–100.0

#4 40.0–60.0 43.0–63.0 50.0–70.0

#8 29.0–43.0 32.0–44.0 35.0–46.0

#30 13.0–28.0 14.0–28.0 15.0–29.0

#50 6.0–20.0 7.0–21.0 7.0–20.0

#200 2.0–7.0 2.0–7.0 2.0–7.0

Design VMA1, % Minimum

– 13.0 14.0 15.0

Production (Plant-Produced) VMA, % Minimum

– 12.5 13.5 14.5

8. Warm Mix Asphalt (WMA) 25

a. WMA is defined as additives or processes that allow a reduction in the 26 temperature at which asphalt mixtures are produced and placed. 27

b. WMA is allowed for use at the Contractor’s option unless otherwise shown on 28 the Drawings. 29

c. Produce an asphalt mixture within the temperature range of 215 degrees F and 30

275 degrees F. 31

32 12 16 - 13

Revised June 7, 2024 Addendum No. 1

d. When WMA is not required by Drawings, produce an asphalt mixture within the 1 temperature range of 215 degrees F and 275 degrees F. 2

2.3 ACCESSORIES [NOT USED] 4

2.4 SOURCE QUALITY CONTROL [NOT USED] 5

PART 3 - EXECUTION 6

3.1 INSTALLERS [NOT USED] 7

3.2 EXAMINATION [NOT USED] 8

3.3 PREPARATION 9

A. Hauling Operations 10

1. Before use, clean all truck beds to ensure mixture is not contaminated. 11

2. When a release agent is necessary to coat truck beds, use a release agent approved 12 by the City. 13

3. Petroleum based products, such as diesel fuel, should not be used. 14

4. If wind, rain, temperature or haul distance impacts cooling, insulate truck beds or 15 cover the truck bed with tarpaulin. 16

5. If haul time in project is to be greater than 30 minutes, insulate truck beds or cover 17 the truck bed with tarpaulin. 18

3.4 INSTALLATION 19

A. Equipment 20

1. General 21

a. Provide required or necessary equipment to produce, haul, place, compact, and 22 core asphalt concrete pavement. 23

b. Ensure weighing and measuring equipment complies with specification. 24

c. Synchronize equipment to produce a mixture meeting the required proportions. 25

2. Production Equipment 26

a. Provide: 27

1) Drum-mix type, weigh-batch, or modified weigh-batch mixing plants that 28 ensure a uniform, continuous production 29

2) Automatic proportioning and measuring devices with interlock cut-off 30 circuits that stop operations if the control system malfunctions 31

3) Visible readouts indicating the weight or volume of asphalt and aggregate 32 proportions 33

4) Safe and accurate means to take required samples by inspection forces 34

5) Permanent means to check the output of metering devices and to perform 35 calibration and weight checks 36

6) Additive-feed systems to ensure a uniform, continuous material flow in the 37 desired proportion 38

3. Weighing and Measuring Equipment 39

a. General 40

1) Provide weighing and measuring equipment for materials measured or 41 proportioned by weight or volume. 42

32 12 16 - 14

Revised June 7, 2024 Addendum No. 1

2) Provide certified scales, scale installations, and measuring equipment 1 meeting the requirements of NIST Handbook 44, except that the required 2 accuracy must be 0.4 percent of the material being weighed or measured. 3

3) Furnish leak-free weighing containers large enough to hold a complete 4 batch of the material being measured. 5

b. Truck Scales 6

1) Furnish platform truck scales capable of weighing the entire truck or truck–7 trailer combination in a single draft. 8

c. Aggregate Batching Scales 9

1) Equip scales used for weighing aggregate with a quick adjustment at zero 10 that provides for any change in tare. 11

2) Provide a visual means that indicates the required weight for each 12 aggregate. 13

d. Suspended Hopper 14

1) Provide a means for the addition or the removal of small amounts of 15 material to adjust the quantity to the exact weight per batch. 16

2) Ensure the scale equipment is level. 17

e. Belt Scales 18

1) Use belt scales for proportioning aggregate that are accurate to within 1.0 19 percent based on the average of 3 test runs, where no individual test run 20 exceeds 2.0 percent when checked in accordance with Tex-920-K. 21

f. Asphalt Material Meter 22

1) Provide an asphalt material meter with an automatic digital display of the 23 volume or weight of asphalt material. 24

2) Verify the accuracy of the meter in accordance with Tex-921-K. 25

3) When using the asphalt meter for payment purposes, ensure the accuracy of 26 the meter is within 0.4 percent. 27

4) When used to measure component materials only and not for payment, 28 ensure the accuracy of the meter is within 1.0 percent. 29

g. Liquid Asphalt Additive Meters 30

1) Provide a means to check the accuracy of meter output for asphalt primer, 31 fluxing material, and liquid additives. 32

2) Furnish a meter that reads in increments of 0.1 gallon or less. 33

3) Verify accuracy of the meter in accordance with Tex-923-K. 34

4) Ensure the accuracy of the meter within 5.0 percent. 35

4. Drum-Mix Plants. Provide a mixing plant that complies with the requirements 36 below. 37

a. Aggregate Feed System 38

1) Provide: 39

a) A minimum of 1 cold aggregate bin for each stockpile of individual 40 materials used to produce the mix 41

b) Bins designed to prevent overflow of material 42

c) Scalping screens or other approved methods to remove any oversized 43 material, roots, or other objectionable materials 44

d) A feed system to ensure a uniform, continuous material flow in the 45 desired proportion to the dryer 46

e) An integrated means for moisture compensation 47

f) Belt scales, weigh box, or other approved devices to measure the 48 weight of the combined aggregate 49

32 12 16 - 15

Revised June 7, 2024 Addendum No. 1

g) Cold aggregate bin flow indicators that automatically signal interrupted 1 material flow 2

b. Reclaimed Asphalt Pavement (RAP) Feed System 3

1) Provide a separate system to weigh and feed RAP into the hot mix plant. 4

c. Mineral Filler Feed System 5

1) Provide a closed system for mineral filler that maintains a constant supply 6 with minimal loss of material through the exhaust system. 7

2) Interlock the measuring device into the automatic plant controls to 8 automatically adjust the supply of mineral filler to plant production and 9 provide a consistent percentage to the mixture. 10

d. Heating, Drying, and Mixing Systems 11

1) Provide: 12

a) A dryer or mixing system to agitate the aggregate during heating 13

b) A heating system that controls the temperature during production to 14 prevent aggregate and asphalt binder damage 15

c) A heating system that completely burns fuel and leaves no residue 16

d) A recording thermometer that continuously measures and records the 17 mixture discharge temperature 18

e) Dust collection system to collect excess dust escaping from the drum. 19

e. Asphalt Binder Equipment 20

1) Supply equipment to heat binder to the required temperature. 21

2) Equip the heating apparatus with a continuously recording thermometer 22 located at the highest temperature point. 23

3) Produce a 24 hour chart of the recorded temperature. 24

4) Place a device with automatic temperature compensation that accurately 25 meters the binder in the line leading to the mixer. 26

5) Furnish a sampling port on the line between the storage tank and mixer. 27

Supply an additional sampling port between any additive blending device and 28 mixer. 29

f. Mixture Storage and Discharge 30

1) Provide a surge-storage system to minimize interruptions during operations 31 unless otherwise approved. 32

2) Furnish a gob hopper or other device to minimize segregation in the bin. 33

3) Provide an automated system that weighs the mixture upon discharge and 34 produces a ticket showing: 35

a) Date 36

b) Project identification number 37

c) Plant identification 38

d) Mix identification 39

e) Vehicle identification 40

f) Total weight of the load 41

g) Tare weight of the vehicle 42

h) Weight of mixture in each load 43

i) Load number or sequential ticket number for the day 44

g. Truck Scales 45

1) Provide standard platform scales at an approved location. 46

5. Weigh-Batch Plants. Provide a mixing plant that complies with Section 2.2.B.4 47

“Drum-Mix Plants,” except as required below: 48

a. Screening and Proportioning 49

32 12 16 - 16

Revised June 7, 2024 Addendum No. 1

1) Provide enough hot bins to separate the aggregate and to control 1 proportioning of the mixture type specified. 2

a) Supply bins that discard excessive and oversized material through 3 overflow chutes. 4

b) Provide safe access for inspectors to obtain samples from the hot bins. 5

b. Aggregate Weigh Box and Batching Scales 6

1) Provide a weigh box and batching scales to hold and weigh a complete 7 batch of aggregate. 8

2) Provide an automatic proportioning system with low bin indicators that 9 automatically stop when material level in any bin is not sufficient to complete 10 the batch. 11

c. Asphalt Binder Measuring System 12

1) Provide bucket and scales of sufficient capacity to hold and weigh binder 13 for 1 batch. 14

d. Mixer 15

1) Equipment mixers with an adjustable automatic timer that controls the dry 16 and wet mixing period and locks the discharge…