9-General Notices, Notes and Information.pdf

Preparer’s Certification for

Specifications, Special Specifications, Estimate and Specification Data

FOR:

ON-CALL - PATCHING MATERIAL (ASPPM) FOR HARRIS

COUNTY PRECINCT 3 - 2025, UPIN 25103MF3RJ01

Special Note:

The following items developed per the published Construction

Drawings have been verified and included in the Purchasing

Department’s Bid Specification Package which can be located at https://harriscountytx.bonfirehub.com/portal/. The items include:

Pricing/Delivery Information

Scope of Work

Special Provision to Standard Specifications

Special Specifications

Supplement to General Requirements

Contract Time

SCOPE OF WORK

Harris County is soliciting bids for a one (1) year term contract, with the option for up to four (4) renewals, for Supply of All Season Pre-Coated Patching Material (ASPPM), for Precinct 3. The vendor shall furnish and/or deliver to various Harris County job sites within Precinct 3 (F.O.B. Job Site), or, the material will be picked up from the vendor's plant(s) by Harris County vehicles (F.O.B. Plant).

SPECIAL NOTES

1. Precinct 3 contacts (after award of contract):

Suzette Moody - (713) 274-3199 Jennifer Almonte - (713) 274-3132

2. Harris County reserves the right to order Materials in any quantity at the unit Prices bid on an as needed basis.

3. Bid quantities included herein are provided for bid comparison purposes only. A Purchase Order will be issued, for each contract term, in the amount of the Precinct’s budget for this material. Supplemental Purchase Orders will be issued should additional materials be required.

May 2019

GENERAL NOTICE TO CONTRACTORS

In accordance with House Bill 1059, a minimum of 25% of the work to be performed on this project shall be performed by the Bidder.

Special Notice: By law, the original price on firm fixed price contracts may not be increased by more than 25%. The original price may not be decreased by 18% or more without the consent of the contractor. Please monitor additions to your contract -additions in excess of 25% will not be paid under any circumstances.

On public works projects, all contractors shall supply a list of all suppliers and subcontractors with addresses and phone numbers, prior to work commencing.

At the time of the scheduled preconstruction meeting, the successful bidder shall supply to the County a list of representatives signed by an Officer of the Company who are authorized to sign official documents, i.e., Purchase Orders, Change Orders, Final Estimates, etc.

In determining who is a responsible bidder, Harris County may take into account the past performance of the bidder on Harris County projects. Commissioners Court adopted a written definition and criteria for determining the performance of a contractor which may be considered in determining the responsibility of a bidder.

Harris County is using an internet-based Construction Program Management Software, e-Builder to maintain consistent administrative and technical control for its projects throughout the County. The Contractor is required to use e-Builder on this project in accordance with procedures provided by the County.

At no cost to the Contractor, the County will provide system login account(s) and provide training for Contractor personnel. The Contractor must update e-Builder with any new or changed information within 24 hours of that information becoming known to Contractor. The Contractor must have access to a computer with internet access and a scanner to use eBuilder.

Harris County- Revised Precinct Boundaries

This map is a user generated static output from an Internet mapping site and is for reference only. Data layers that appear on this map may or may not be accurate, current, or otherwise reliable.

577,791

© Latitude Geographics Group Ltd.

18.2

THIS MAP IS NOT TO BE USED FOR NAVIGATION

Legend

1:

WGS_1984_Web_Mercator_Auxiliary_Sphere

Miles0 18.29.12 Notes Notes

Harris County Boundary Other Counties

Harris County

Commissioner Precincts 2021 Pct 1

Pct 2

Pct 3

Pct 4

World Street Map

NOTICE OF SPECIFICATIONS

For the construction of this project, the Contractor shall use the attached Special Provisions, Special Specifications, and Harris County Engineering Department (HCED) Specifications Book – Standard Specifications for the Construction of Road and Bridges by Harris County Engineering Department, effective date October 10, 2023. The current HCED specifications may be found at the HCED website: https://www.eng.hctx.net/ Portals/33/2023-Standard%20Specifications/HCED-EN0-SS-001-00-C_Standard% 20Specifications%2010.26.2023%20(Final).pdf?ver=GRDvtDMEWY-IlJTeDWV4Hw%3d% 3d

When applicable, the Contractor shall use the Harris County Flood Control District (HCFCD) 2005 Standard Specifications Book. The current HCFCD specifications may be found at the HCFCD website: https://www.hcfcd.org/Technical-Manuals/all-documents?folderId=8625& view=gridview&pageSize=10

When applicable, the Contractor shall also use the Texas Department of Transportation (TxDOT) 2024 Standard Specifications Book. The current TxDOT specifications may be found at the TxDOT website: https://www.txdot.gov/business/resources/txdot-specifications/2024-standard-specifications.html

When applicable, the Contractor shall also use the City of Houston (COH) Standard Specifications. The current COH specifications may be found at the COH website:

https://www.houstonpermittingcenter.org/office-city-engineer/design-and-construction-standards http://www.eng.hctx.net/Portals/33/Publications/professional-services/spec/2017/2017_HC_Stand_Spec.pdf http://www.eng.hctx.net/Portals/33/Publications/professional-services/spec/2017/2017_HC_Stand_Spec.pdf https://www.hcfcd.org/Technical-Manuals/all-documents?folderId=8625&%20view=gridview&pageSize=10 https://www.hcfcd.org/Technical-Manuals/all-documents?folderId=8625&%20view=gridview&pageSize=10 https://www.txdot.gov/business/resources/txdot-specifications.html https://www.txdot.gov/business/resources/txdot-specifications.html https://www.houstonpermittingcenter.org/office-city-engineer/design-and-construction-standards https://www.houstonpermittingcenter.org/office-city-engineer/design-and-construction-standards

730-001

03-23

OTU

SPECIAL PROVISION

TO

ITEM TXDOT 8012 (2024)

ASPHALTIC CONCRETE PATCHING MATERIAL

(STOCKPILE STORAGE OR BAGGED) (MATERIALS ONLY)

Article 8.6 Bold heading “Ton.” Under “Measurement and Payment” section is voided and replaced with the following.

8.6 Ton. By the ton of dry weight in vehicles as delivered or pick-up. The dry weight is determined by deducting the weight by deducting the moisture in the material at the time of the weighing from the gross weight of the material.

The Engineer will determine the moisture content in the material in accordance with Tex-103-E from samples taken at the time of weighing.

When material is measured in trucks, the weight of the material will be determined on certified scales, or the Contractor must provide a set of standard platform truck scales at a location approved by the Engineer.

Scales must conform to the requirements of Item 520, “Weighing and Measuring Equipment.” When material is measured by the ton, provide a conversion rate to cubic yards on each haul ticket.

2024 Specifications 8012

1 - 4 06-24 Statewide

Special Specification 8012

Asphaltic Concrete Patching Material (Stockpile Storage or Bagged) (Materials Only)

1. DESCRIPTION

This Specification governs for crushed stone asphaltic concrete intended primarily as a cool- to cold-weather stockpile or bagged patching mix for maintenance. The mixture must remain workable in the stockpile for 6

mo. from the day of delivery and have good adhesion to wet surfaces. The length of satisfactory stockpiling and the lowest temperature at which it can be used will vary according to the type and grade of asphaltic binder specified.

Provide the mix as designated on the plans or requisition and following the combinations of asphalt and aggregate listed in Table 1.

Table 1 Asphalt and Aggregate Combinations

Aggregate Asphalt

SCM I ASPPM NVM

Gradation I X X

Gradation II X X

Gradation III X

Gradation IV X X X

2. UNITS OF MEASUREMENTS

The values given in parentheses (if provided) are not standard and may not be exact mathematical conversions. Use each system of units separately. Combining values from the two systems may result in nonconformance with the standard.

3. MATERIAL PRODUCER LIST

The Materials and Test Division (MTD) maintains the Material Producer List (MPL) of all materials conforming to the requirements of this Specification. Materials appearing on the MPL, entitled “Asphaltic Concrete Patching Material (Stockpile Storage or Bagged),” require no further testing unless deemed necessary by the Engineer. Materials not appearing on the MPL may not be used on Department projects.

4. BIDDERS’ AND SUPPLIERS’ REQUIREMENTS

The Department will only purchase or allow on projects those products listed by producer and product code or designation shown on the MPL.

Use of pre-qualified product does not relieve the Contractor of the responsibility to provide product that meets this Specification. The Department may inspect or test material at any time and reject any material that does not meet the specifications.

5. MATERIAL REQUIREMENTS

5.1. Asphaltic Material. Provide SCM I, ASPPM, or NVM in accordance with the requirements below. Provide asphaltic material for use as designated by the Engineer on the plans or requisition.

2 - 4 06-24 Statewide

5.1.1. SCM I (Special Cutback Material I). Use an asphalt material meeting Item 300, “Asphalts, Oils, and Emulsions,” requirements.

5.1.2. All Season Pre-Coated Patching Mixture (ASPPM). Use only aggregate gradation IV to produce ASPPM.

Pre-coat the coarse and fine aggregates with at least 1% of AC-10, PG 64-22, or equivalent material in accordance with Item 300, before mixing with the asphalt material meeting the requirements of Table 2.

Table 2 Asphalt Materials Properties for ASPPM

Property Test Procedure Min Max

Kinematic viscosity, 140°F, cSt T 201 300 700

Water, % T 55 – 0.1

Flash point, T.O.C., °F T 79 250 –

Distillation test: T 78 Distillate, percentage by volume of total distillate to 680°F to 437°F 0 0 to 500°F 0 5 to 600°F 55 – Residue from distillation, volume % 73 100

Tests on distillation residue:

T 49 T 44

99.0

Penetration, 100 g, 5 sec., 77°F

Solubility in trichloroethylene1, %

Note—Test procedures beginning with T are AASHTO procedures.

1. Only perform this test if the binder does not appear homogenous.

5.1.3. Non-Volatile Mixture (NVM). Use aggregate gradations I, II, III, or IV to produce NVM. Use a non-volatile binder to produce NVM in accordance with Table 3.

Table 3 Asphalt Material Properties for NVM

Property Test Procedure Min Max

Flash point, T.O.C., °F T 79 174 –

Distillation test: T 78 Distillate, percentage by volume of total distillate to 680°F to 437°F 0 0 to 500°F 0 0 to 600°F 0 0 Residue from distillation, volume % 100 100

Tests on distillation residue:

T 49 T 44

99.0

Penetration, 100 g, 5 sec., 77°F

Solubility in trichloroethylene1, %

Note—Test procedures beginning with T are AASHTO procedures.

1. Only perform this test if the binder does not appear homogenous.

5.2. Asphaltic Additives. Use one or more asphalt additives in the mixture to prevent stripping of the asphalt from the aggregate in the presence of water and promote bonding to damp or wet surfaces. Add the additives to the asphalt material at the point of origin or meter in at the mix plant to provide a uniform concentration of the agents. The Engineer will approve the type and number of additives used in the design stage based on the resistance to stripping, and desired bonding and workability characteristics.

5.3. Aggregate. Furnish aggregate meeting the requirements of Item 334, “Hot-Mix Cold-Laid Asphalt Concrete Pavement.”

6. MIXTURE PROPERTIES

6.1. General Testing. Produce a mixture according to the mixture property requirements listed in Table 4.

3 - 4 06-24 Statewide

Table 4 Mixture Property Testing Requirements

Property Test Procedure Min Max

Residual Asphalt Content, exclusive of volatiles, % by weight1 Tex-210-F 3.0 7.0

Hydrocarbon Volatile Content of mix, % by weight2 Tex-213-F 0.3 1.0

Moisture Content of Mix, % by weight3 Tex-212-F, Part I – 2.0

Hveem Stability of as-received mix (no curing) at 77 ± 2°F, (molded at 77 ± 2°F) Tex-208-F 35 –

Hveem Stability of cured mix (cured to a constant weight) at 140°F, (molded at 140°F in accordance with Tex-206-F), %

Tex-208-F 35 –

1. Residual asphalt content allowed for ASPPM only, is in the range of 4.0 to 6.0%.

2. No hydrocarbon volatile content allowed for NVM only.

3. This requirement does not apply to mixtures produced at mixing temperatures of 174°F or less.

6.2. Mixture Design and Aggregate Gradation. Mixtures produced must adhere to the density requirements specified in Table 5.

Table 5 Laboratory-Molded Density Requirements

Minimum Optimum Max

90.0 93.0 96.0

The Engineer will select the asphalt content within the range specified in Table 6 for mixtures produced with aggregate gradation I, II, III, or IV.

Table 6 Aggregate Gradation Requirements (% passing by Weight or Volume) 1

Sieve Size Gradation I Gradation II Gradation III Gradation IV

3/4" – – 100 100

1/2" 100 100 70–90 100

3/8" 95–100 95–100 40–70 100

No. 4 90–100 17–40 10–30 65–90

No. 10 10–30 2–15 5–20 20–40

No. 40 0–25 – 0–10 10–30

No. 80 0–10 – 0–5 0–15

No. 200 0–5 0–3 0–4 0–5

AC %2 – 4.5–6.5 4.0–5.5 5.0–7.0

1. Determine percent passing in accordance with Tex-200-F, Part II.

2. Allowed range for asphalt content as measured according to Tex-210-F. This asphalt content includes volatiles.

6.3. Resistance to Water Damage. Evaluate the as-received mix for resistance to water damage by soaking a 100g representative sample of the total mixture in 200 mL (7 fl. oz.) of distilled or de-ionized water at 140 ± 2°F for 24 ± 2 hr. Perform the soaking test in an approximately 400 mL (14 fl. oz.) glass. Evaluate the mixture upon completion of the 24-hr. soaking period while submerged in the testing water. No visible evidence of stripping of the material is allowed.

7. MIXTURE PREPARATION

Provide a plant-produced mixture. Heat the asphaltic material in accordance with Item 300. Apply SCM I when specified at 170–200°F, unless otherwise specified by the material supplier. Mix the aggregate with asphaltic material at a temperature not exceeding 200°F, unless otherwise approved. Discharge the bituminous mixture at a temperature not exceeding 200°F at the point of discharge from the mixer, unless otherwise approved. Mix the aggregate and bituminous material until all the aggregate is uniformly coated.

8. MEASUREMENT AND PAYMENT

Material will be measured as follows.

8.1. Material (Pick up). The ton or any cubic yard method.

https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit210.pdf https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit213.pdf https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit212.pdf https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit208.pdf https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit206.pdf https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit208.pdf https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit200.pdf https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/200-F_series/pdfs/bit210.pdf

4 - 4 06-24 Statewide

8.2. Material (Stockpile). The ton or any cubic yard method.

8.3. Material (Bag). The 60-lb bag.

A stockpile can be either on the roadway right of way or at a maintenance yard. Additional measurements or calculations will be made if adjustments of quantities are required.

Payment will be made in the measurements defined as follows:

8.4. Cubic Yard in Vehicle. By the cubic yard in vehicles of uniform capacity at the point of delivery.

8.5. Cubic Yard in Stockpile. By the cubic yard in the final stockpile position by the method of average end areas for roadway right of way stockpiles and with the Stockpile App for maintenance yard stockpiles.

8.6. Ton. By the ton of dry weight in vehicles as delivered. The dry weight is determined by deducting the weight by deducting the moisture in the material at the time of the weighing from the gross weight of the material.

The Engineer will determine the moisture content in the material in accordance with Tex-103-E from samples taken at the time of weighing.

When material is measured in trucks, the weight of the material will be determined on certified scales, or the Contractor must provide a set of standard platform truck scales at a location approved by the Engineer.

Scales must conform to the requirements of Item 520, “Weighing and Measuring Equipment.”

When material is measured by the ton, provide a conversion rate to cubic yards on each haul ticket.

8.7. Bag. By each 60-lb bag.

8.8. Payment:

8.9. Material (Pick up). Payment will be made for the type and grade specified. For cubic yard measurement, “In Vehicle” will be specified. This price is full compensation for furnishing materials, assistance provided in sampling, loading provided vehicles, furnishing scales and labor for weighing and measuring, and equipment, labor, tools, and incidentals.

8.10. Material (Stockpile). Payment will be made for the type and grade specified. For cubic yard measurement, “In Vehicle” or “In Stockpile” will be specified. This price is full compensation for furnishing materials, stockpiling, loading, hauling, delivery of materials to the stockpile, furnishing scales and labor for weighing and measuring, and equipment, labor, tools, and incidentals.

8.11. Material (Bag). Payment will be made for the type and grade specified. This price is full compensation for furnishing materials, stockpiling, loading, hauling, delivery of materials, furnishing scales and labor for weighing and measuring, and equipment, labor, tools, and incidentals.

https://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/100-E_series/pdfs/soi103.pdf