18-General Notices, Notes and Information.pdf

Preparer’s Certification for

Specifications, Special Specifications, Special

Provisions, Estimate and Specification Data

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 found on Bonfire.

The items include:

• Pricing/Delivery Information

• Scope of Work

• Special Provision to Standard Specifications

• Special Specifications

• Supplement to General Requirements

• Contract Time

TBPE REGISTRATION NO. F-18368

11111 WILCREST GREEN DR, SUITE 410

HOUSTON, TEXAS 77042

FOR:

Seabrook Sports Complex

Parking Lot - 2023

Harris County Precinct 2

UPIN# 24102MF3CC01

TABLE OF CONTENTS

1. Scope of Work

2. General Notice to Contractors

3. General Notes

4. Notice to Contractors- TBPE Policy

5. Notice to Contractors- Material Hauling

6. Notice to Contractors- Storm Water Quality and Environmental Issues

7. Notice to Specifications

8. Special Provision Item 110 – Roadway Excavation

9. TxDOT Item 464 – Reinforced Concrete Pipe

10. TxDOT Item 467 – Safety End Treatment

11. TRUEGRID Special Spec

SEABROOK SPORTS COMPLEX PARKING LOT – 2023 – PRECINCT 2

UPIN No. 24102MF3CC01

SCOPE OF WORK

SUMMARY

A. The Seabrook Sports Complex Parking Lot – 2023 project site consists of a new pervious pavement parking lot and improved drainage.

B. The overall objective for this project is to add an approximately 38,120 sq-ft pervious pavement parking lot, new underground drainage and a new ditch, and a new 6-ft concrete sidewalk. Drainage will connect to an existing underground drainage storm sewer.

C. The “Time of Completion” of this construction contract will be 90 working days

(defined as consecutive calendar days).

D. The Contractor to use the TRUEGRID Permeable Pavers system or an approved equivalent pavement to be approved by the Engineer.

CONTRACTOR’S USE OF RIGHT-OF-WAY

A. Access: The Harris County Engineering Department – Recovery and Resiliency Division (“HCED - RRD”) has acquired adequate right-of-way for access to the job.

Refer to the Plans for location of the right-of-way limits. The access point into and out of the project site is off N Meyer Ave.

B. Work Area: The work area is defined as the project right-of-way or construction area within the project right-of-way identified on the Plan.

WORK SEQUENCE

The project consists of the construction of a 38,120 sq-ft pervious pavement parking lot and drainage on an existing grass lot, a new drainage ditch, and new drainage structures. The sequence of major work activities is as follows:

1. Conduct a site walk with the Engineer to review the existing ground survey and identify areas and sections of concern.

2. Conduct and submit final, as-built topographic survey signed and sealed by an

RPLS.

3. Set up erosion and sediment controls and conduct continuous inspection and update to SWPPP.

4. Develop and submit Traffic Control Plan for approval. Coordinate with nearby schools to ensure no impact to school traffic during active school-zone hours.

5. Implement approved Traffic Control Plan and construct necessary. The development and implementation of traffic control plan is incidental to Item 694.01.

6. Contractor will contact the City of Seabrook to remove existing wooden pole barriers in the project area. The primary contact for the City of Seabrook will be Brian Craig (281)-291-5719.

7. Install temporary construction fencing as required to protect areas not to be cleared and designated trees in connection with the project.

8. Clear and grub designated areas.

9. Coordinate with utility owners prior to construction near existing utilities.

10. Relocate existing utilities which conflict with the proposed construction as shown on the Plans.

11. Remove wooden fences and relocate the existing dumpster outside of the project area.

12. Remove and relocate existing “911” Pole.

13. Remove any existing obstructions to pavement and storm sewer construction, including asphalt pavement, driveways, culverts, sidewalks etc.

14. Regrade existing ditch as shown in the Plans.

15. Construct proposed storm sewer system as shown in the plan or as directed by the Engineer. Construct proposed pipe network under the proposed parking lot as well as 3 proposed culverts. Install inlets as proposed.

16. Conduct necessary site drainage and water/sediment controls throughout the construction period to ensure no stormwater impact to local communities or receiving water bodies.

17. Construct proposed 38,120 sq-ft parking lot and proposed concrete driveways as shown in the Plans.

18. Construct proposed 6-ft sidewalks along the new parking lot and build new concrete dumpster pad and wooden fence. The Contractor will relocate the existing dumpster to the proposed dumpster location upon completion of the new dumpster pad and enclosure.

19. Regrade the area between sidewalk and ROW to prevent ponding and ensure unobstructed ditch flow to nearby inlets.

20. Construct proposed lighting in and around the proposed parking lot.

21. Place proposed parking lot striping in accordance with the Plans. Place proposed wooden bollards, handicap parking signs, and concrete wheel stops.

22. Finalize grading and stabilize the site with sodding and/or hydromulch turf establishment.

23. After turf establishment is complete and site has been stabilized (as defined in

TCEQ General Permit TXR150000 for Construction Activities, on Page 7, “Final Stabilization”), remove stormwater pollution protection items and clean up the site of construction materials as needed. Haul debris to landfill.

24. Remove traffic control devices along and enhancements along N Meyer Ave and inside the parking lot area.

25. Remove any additional trash or debris in the project area.

REQUIRED QUALIFICATIONS

A. Manufacturer’s Qualifications: Manufacturer with a minimum of five years documented experience with products specified.

B. Installer Qualifications: Installer experienced in performing work of this section that has specialized in installation of work similar to that required for this project. Installer must also be able to provide skilled workman with satisfactory record of performance. Contractors must demonstrate prior experience with TrueGrid products or other equivalent, engineering-approved products.

PROTECT EXITING UTILITIES

A. Contractor is responsible for any damage to existing utilities in the project area.

There is an existing USGS Monitoring System Cabinet and Pipes that will be protected throughout construction. There are also CenterPoint and City of Seabrook utility lines in the project area. If any existing utilities need to be relocated or are damaged during construction, the Contractor is to contact the utility owner to resolve the issue.

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.

May 2019

NOTICE TO CONTRACTORS

ON STORM WATER QUALITY AND

ENVIRONMENTAL ISSUES

In addition to the regulatory requirements stated in the General Conditions, the Contractor shall recognize and comply with the following:

SECTION 1. STORM WATER POLLUTION PREVENTION PLANS

A. COVERAGE

Coverage under the Texas Pollutant Discharge Elimination System (TPDES)

General Permit TXR150000 for storm water discharges associated with construction activities is required for a project that disturbs 1 acre or greater (or is a part of a larger common plan of development with the potential to disturb 1 acre or greater). Coverage requires the preparation, implementation, inspection, and maintenance of a Storm Water Pollution Prevention Plan (SWPPP), in accordance with the TPDES General Permit.

B. PROJECT CLASSIFICATION

This project is classified as one of three categories listed below. The

Contractor shall be responsible for the storm water quality items, accordingly.

1. “Construction Sites That Do Not Require TPDES General Permit

Coverage” The project disturbs less than 1 acre (and is not part of a common plan of development with the potential to disturb 1 acre or more); therefore, coverage under the TPDES General Permit is not required. However, the Contractor shall implement good housekeeping measures to minimize the potential for pollutants, associated with the construction activities, to enter the storm sewer system. Item 725, “General Source Controls”, shall be implemented by the Contractor, as well as any other erosion, sedimentation, and pollution controls shown in the plans and project manual.

or

2. “Small Construction Sites”

The project disturbs 1 acre or more, but less than 5 acres, (or is part of a common plan of development with the potential to disturb 1 acre or more);

therefore, coverage under the TPDES General Permit is required. The Contractor shall implement, inspect, and maintain the Storm Water Pollution Prevention Plan shown in the plans and project manual.

Certification of a TCEQ Small Construction Site Notice (CSN) in accordance with Part II.E.2 of the TPDES General Permit is required. The Contractor, as a primary operator, as defined by TPDES General Permit, shall certify one Construction Site Notice (CSN) and provide this to Harris County at the time that the contract is awarded. Harris County (owner), as primary operator, as defined by TPDES General Permit, shall certify a second Construction Site Notice (CSN) at the time the contract is awarded. After the project is awarded, Harris County shall provide copies of the two certified Construction Site Notices (CSN) to the Contractor, and send copies to the local storm sewer operator for notification purposes. Prior to commencing construction activities, the Contractor shall laminate and post the notices on the project site in a location where they are readily available for public viewing. The Contractor shall maintain the posted notices until after completion of the construction activities and final stabilization of the project site as defined by the TPDES General Permit. When the project is completed and stabilization is achieved, as defined by the TPDES General Permit, then the Contractor shall note the date that the Small Construction Site Notice was removed from the project site. A copy of the completed Small Construction Site Notice shall be provided to the Engineer with the SWPPP records. The County shall then notify the local storm sewer operator that storm water associated with construction activities is no longer being discharged from the site.

3. “Large Construction Sites”

The project disturbs 5 acres or greater (or is part of a common plan of development with the potential to disturb 5 acres or more); therefore, coverage under the TPDES General Permit is required. The Contractor shall implement, inspect, and maintain the Storm Water Pollution Prevention Plan shown in the plans and project manual. Certification of a Notice of Intent (NOI) in accordance with Part II.E.3 of the TPDES General Permit is required and shall be completed in accordance with Harris County Specification Item Number 700. The Contractor shall not commence with any earth disturbing activities on the project site until:

• at least seven (7) days after submittal of the NOI (Harris County & Contractors) via U.S. Postal Service, or if Utilizing electronic submittal, prior to commencing construction activities,

• copies of signed NOI’s are submitted to any municipal separate storm sewer system (MS4) receiving discharge, at least seven (7) days prior to commencing construction activities. Contractor shall list in the SWPPP the names and addresses of all MS4 operators receiving a copy.

• copies of the Certified NOI’s are posted in a publicly accessible location (copies shall be laminated or placed in weather resistant display case),

• and copies (Harris County & Primary Contractors) of construction site notice for large sites (CSN) are posted in a publicly accessible location. After construction activities are complete and final stabilization is achieved (as defined by the TPDES General Permit), the Contractor shall certify one Notice of Termination (NOT) form and provide it to Harris County. Harris County shall certify a second NOT form. Harris County shall submit the two NOTs to the TCEQ and the local storm sewer system operator. After the NOTs have been submitted to the TCEQ, then the Contractor shall remove all temporary SWPPP controls, cease SWPPP inspections, and deliver copies of all SWPPP records to the Engineer who shall archive them for a minimum of three years. The final payment to the Contractor may be held until all SWPPP records are received by the Engineer.

SECTION 2. STORM WATER QUALITY MANAGEMENT PLANS

A. COVERAGE

If this project meets the definition of “new development” or “significant redevelopment” as defined in the Harris County regulations or City of Houston ordinance on storm water quality and the project is not “grandfathered” or “exempt” as defined by the regulation or ordinance, then a Storm Water Quality Management Plan (SWQMP) is required for the project, as shown in the construction plans.

B. CLASSIFICATION

This project is classified as one of three categories listed below. The Contractor shall be responsible for the storm water quality items, accordingly.

1. “SWQ Permit Within Unincorporated Harris County”

If a Storm Water Quality Management Plan with permanent storm water quality controls is shown in the construction plans and the project is located in unincorporated Harris County, then a Storm Water Quality Management Plan is required prior to the start of construction. Prior to the start of construction, the Engineer shall submit the plans and Written Storm Water Quality Management Plan to the Harris County Permits Group and obtain the necessary signatures acknowledging acceptance of the Storm Water Quality Management Plan. The Contractor shall construct the SWQMP structural controls in accordance with the construction plans, and maintain the SWQMP structural controls until completion of the project and until the Engineer can certify that the SWQMP structural controls are constructed in accordance with the plans.

2. “SWQ Permit Within City of Houston” If a Storm Water Quality Management Plan with permanent storm water quality controls is shown in the construction plans and the project is located in the jurisdiction of the City of Houston, then a Storm Water Quality Management Permit is required prior to the start of construction.

Prior to the start of construction, the Engineer shall submit to the City of Houston the construction plans, the City of Houston Storm Water Quality Management Plan Application for Permit, and all other related documents shown on the permit application and obtain the Storm Water Quality Management Permit. Prior to the start of construction, the Contractor shall post a performance bond to the City of Houston for the construction of the storm water quality structural controls. The Contractor shall post a copy of the issued permit on the project site, construct the SWQMP structural controls in accordance with the construction plans, and maintain the SWQMP structural controls until completion of the project and until the Engineer can certify that the SWQMP structural controls are constructed in accordance with the plans.

The Engineer shall submit the Storm Water Quality Permit As-built Certificate to the City of Houston and Harris County shall begin implementation of the SWQMP.

3. “Grandfathered or Exempt from SWQ Permit” or “Storm Water Quality

Bank” If a Storm Water Quality Management Plan, or permanent storm water quality feature, is not shown in the construction plans, then a Storm Water Quality Management Permit is not required prior to the start of construction because it is grandfathered, exempt, or has provided storm water quality measures through the Storm Water Quality Bank.

SECTION 3. OTHER ENVIRONMENTAL ISSUES

A. BIOLOGICAL ISSUES

In accordance with requirements under the federal Migratory Bird Treaty Act, if in the course of construction, a bird rookery, an identified special migratory bird habitat, or a nesting site is discovered on the project site, then the Contractor shall cease work in the area and immediately notify the Engineer.

In accordance with the Federal Endangered Species Act and the Texas Parks and Wildlife Code, if a biological mitigation plan for specially protected flora and fauna species has been provided within the construction plans, then the Contractor shall comply with all requirements noted within the plan.

B. WATERS OF THE UNITED STATES INCLUDING ADJACENT WETLANDS

In accordance with Section 404 and Section 401 of the Clean Water Act and Section 10 of the Rivers and Harbors Act, waters of the United States including adjacent wetlands shall not be impacted by the Contractor unless a Department of the Army Permit has been obtained from the U.S. Army Corps of Engineers for the project.

If Harris County has obtained a Department of the Army Permit for this project, a copy of the permit is provided in the project manual. The Contractor shall comply with all requirements of the Department of the Army Permit. The Contractor shall not impact any waters of the United States and adjacent wetlands greater than the area and volume shown in the permit. If the Contractor impacts waters of the United States including adjacent wetlands on the project site that exceeds the area and volume shown in the permit, then the Contractor shall be responsible for any violations that may be issued by the regulatory agencies. If the Contractor deems it necessary to impact waters of the United States including adjacent wetlands that exceed the permit, then the Contractor must first notify the Engineer and the Engineer may obtain the necessary regulatory clearances prior to allowing the additional impacts to occur.

During construction of the project, if the Contractor uses off-site areas (not owned by Harris County) for placement of borrow material, disposal of construction debris, staging of construction materials, usage as a field office, or other types of construction related activities, then the Contractor shall be solely responsible for obtaining all environmental permits for the off-site activity, as well as providing all environmental controls and compensatory mitigation requested by the permitting agency. If a regulatory violation occurs as a result of this off-site activity, then the Contractor shall be solely responsible for this violation.

C. STATE OWNED SUBMERGED LANDS

The Contractor shall not impact submerged lands regulated under the authority of the Texas General Land Office, or other local agency, without an easement agreement. If an easement agreement is necessary for the construction activities, then the easement agreement shall be obtained by Harris County.

D. CULTURAL RESOURCES

In accordance with the National Historic Preservation Act and the Antiquities Code of Texas, the Contractor shall not remove or disturb, or cause or permit to be removed or disturbed, any historical, archeological, architectural, or other cultural artifacts, relics, vestiges, remains, or objects of antiquity from the project site. In the event that such items are discovered on the project during construction activities, the Contractor shall immediately notify the Engineer. The site and the potentially significant material shall be protected by the Contractor from further disturbance until a professional examination of them can be made and/or until clearance to proceed with construction has been provided by the Engineer.

E. HAZARDOUS AND PETROLEUM SUBSTANCES

If during the course of construction, the Contractor discovers hazardous or petroleum substances or wastes on the project site, then the Contractor shall immediately cease work in the area and remove all personnel from the area. The contractor shall temporarily close the area to the public, as well; temporary fencing or caution tape shall be installed around the area. The Contractor shall notify the Engineer immediately. Work in the area shall not be permitted until the Engineer has determined that safety and environmental issues have been properly addressed.

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 – 2023 Harris County Standard Specifications for the Construction of Roads and Bridges, effective date October 10, 2023. The current HCED specifications may be found at the HCED website: https://www.eng.hctx.net/Consultants/Standards- Specifications/Standard-Engineering-Design-Specifications

When applicable, the Contractor shall use the Harris County Flood Control District (HCFCD) 2020 Standard Specifications Book. The current HCFCD specifications may be found at the HCFCD website: https://www.hcfcd.org/Resources/Technical-Manuals/Standard- Specifications-Related-Drawings?folderId=15985&view=gridview&pageSize=10

When applicable, the Contractor shall also use the Texas Department of Transportation (TxDOT) 2014 Standard Specifications Book. The current TxDOT specifications may be found at the TxDOT website: https://www.txdot.gov/business/resources/txdot-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 https://www.eng.hctx.net/Consultants/Standards-Specifications/Standard-Engineering-Design-Specifications https://www.eng.hctx.net/Consultants/Standards-Specifications/Standard-Engineering-Design-Specifications https://www.hcfcd.org/Resources/Technical-Manuals/Standard-Specifications-Related-Drawings?folderId=15985&view=gridview&pageSize=10 https://www.hcfcd.org/Resources/Technical-Manuals/Standard-Specifications-Related-Drawings?folderId=15985&view=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

SPECIAL PROVISION

TO

ITEM 110 – ROADWAY EXCAVATION

Paragraph 110.5 “Payment,” is added with the following.

Any excavation related to TrueGrid Permeable Paver System, or approved equal pavement system, to the bottom of the base layer, will be incidental to bid item

“TRUEGRID PRO PLUS GRAVEL PAVING SYSTEM (24”X24”X1.8”)(OR

EQUIVALENT), (FULL SECTION INSTALLED), 10” BASE (1” TO 1.5” UNIFORM

CLEAN WASHED ANGULAR STONE), GEOTEXTILE FABRIC, & EXCAVATION”.

09-25

OTU

Item 464

Reinforced Concrete Pipe

1. DESCRIPTION

Furnish and install reinforced concrete pipe, materials for precast concrete pipe culverts, or precast concrete storm drain mains, laterals, stubs, and inlet leads.

2. MATERIALS

2.1. Fabrication. Fabrication plants must be approved by the Construction Division in accordance with DMS-7310, “Reinforced Concrete Pipe and Machine-Made Precast Concrete Box Culvert Fabrication and Plant Qualification,” before furnishing precast reinforced concrete pipe for Department projects. The Department’s MPL has a list of approved reinforced concrete pipe plants.

Furnish material and fabricate reinforced concrete pipe in accordance with DMS-7310, “Reinforced Concrete Pipe and Machine-Made Precast Concrete Box Culvert Fabrication and Plant Qualification.”

2.2. Design.

2.2.1. General. The class and D-load equivalents are shown in Table 1. Furnish arch pipe in accordance with ASTM C506 and the dimensions shown in Table 2. Furnish horizontal elliptical pipe in accordance with ASTM C507 and the dimensions shown in Table 3. For arch pipe and horizontal elliptical pipe the minimum height of cover required is 1 ft.

Table 1 Circular Pipe

ASTM C76 & ASTM C655

Class D-Load

I 800

II 1,000

III 1,350

IV 2,000

V 3,000

Table 2 Arch Pipe

Design Size

Equivalent Diameter (in.)

Rise (in.)

Span (in.)

1 18 13-1/2 22 2 21 15-1/2 26

3 24 18 28-1/2

4 30 22-1/2 36-1/4 5 36 26-5/8 43-3/4

6 42 31-5/16 51-1/8 7 48 36 58-1/2

8 54 40 65

9 60 45 73 10 72 54 88 http://ftp.dot.state.tx.us/pub/txdot-info/cst/DMS/7000_series/pdfs/7310.pdf

Table 3 Horizontal Elliptical Pipe

Design Size

Equivalent Diameter (in.)

Rise (in.)

Span (in.)

1 18 14 23

2 24 19 30

3 27 22 34 4 30 24 38

5 33 27 42

6 36 29 45 7 39 32 49

8 42 34 53 9 48 38 60

10 54 43 68

2.2.2. Jacking, Boring, or Tunneling. Design pipe for jacking, boring, or tunneling considering the specific installation conditions such as the soil conditions, installation methods, anticipated deflection angles, and jacking stresses. Provide design notes and drawings signed and sealed by a Texas licensed professional engineer when requested.

2.3. Marking. Furnish each section of reinforced concrete pipe marked with the following information specified in DMS-7310, “Reinforced Concrete Pipe and Machine-Made Precast Concrete Box Culvert Fabrication and Plant Qualification.”

class or D-load of pipe, ASTM designation, date of manufacture, pipe size, name or trademark of fabricator and plant location, designated fabricator’s approval stamp, pipe to be used for jacking and boring (when applicable), and designation “SR” for pipe meeting sulfate-resistant concrete plan requirements (when applicable).

Clearly mark 1 end of each section during the process of manufacture or immediately thereafter for pipe with elliptical reinforcement. Mark the pipe on the inside and outside of opposite walls to show the location of the top or bottom of the pipe as it should be installed unless the external shape of the pipe is such that the correct position of the top and bottom is obvious. Mark the pipe section by indenting or painting with waterproof paint.

2.4. Inspection. Provide access for inspection of the finished pipe at the project site before and during installation.

2.5. Causes for Rejection. Individual section of pipe may be rejected for any of the conditions stated in the Annex of DMS-7310, “Reinforced Concrete Pipe and Machine-Made Precast Concrete Box Culvert Fabrication and Plant Qualification.”

2.6. Repairs. Make repairs if necessary as stated in the Annex of DMS-7310, “Reinforced Concrete Pipe and Machine-Made Precast Concrete Box Culvert Fabrication and Plant Qualification.”

2.7. Jointing Materials. Use any of the following materials for the making of joints unless otherwise shown on the plans. Furnish a manufacturer’s certificate of compliance for all jointing materials except mortar.

2.7.1. Mortar. Provide mortar for joints that meets the requirements of Section 464.3.3., “Jointing.”

2.7.2. Cold-Applied, Plastic Asphalt Sewer Joint Compound. Provide a material that consists of natural or processed asphalt base, suitable volatile solvents, and inert filler. Ensure the consistency is such that the ends of the pipe can be coated with a layer of the compound up to 1/2 in. thick by means of a trowel. Provide http://ftp.dot.state.tx.us/pub/txdot-info/cst/DMS/7000_series/pdfs/7310.pdf a joint compound that cures to a firm, stiff plastic condition after application. Provide a material of a uniform mixture. Stir any small separation found in the container into a uniform mix before using.

Provide a material that meets the requirements of Table 4 when tested in accordance with Tex-526-C.

Table 4 Cold-Applied, Plastic Asphalt Sewer Joint Compound Material Requirements

Composition Analysis

Asphalt base, 100%–% volatiles–% ash, % by weight 28–45

Volatiles, 212°F evaporation, 24 hr., % by weight 10–26

Mineral matter, determined as ash, % by weight 30–55

Consistency, cone penetration, 150 q, 5 sec., 77°F 150–275

2.7.3. Rubber Gaskets. Provide gaskets that conform to ASTM C1619 Class A or C. Meet the requirements of ASTM C443 for design of the pipe joints and permissible variations in dimensions.

2.7.4. Pre-Formed Flexible Joint Sealants. Pre-formed flexible joint sealants may be used for sealing joints of tongue-and-groove concrete pipe. Provide flexible joint sealants that meet the requirements of ASTM C990.

Use flexible joint sealants that do not depend on oxidizing, evaporating, or chemical action for its adhesive or cohesive strength. Supply in extruded rope form of suitable cross-section. Provide a size of the pre-formed flexible joint sealant in accordance with the manufacturer’s recommendations and large enough to properly seal the joint. Protect flexible joint sealants with a suitable wrapper able to maintain the integrity of the jointing material when the wrapper is removed.

3. CONSTRUCTION

3.1. Excavation, Shaping, Bedding, and Backfill. Excavate, shape, bed, and backfill in accordance with Item 400, “Excavation and Backfill for Structures,” except where jacking, boring, or tunneling methods are permitted. Jack, bore, or tunnel the pipe in accordance with Item 476, “Jacking, Boring, or Tunneling Pipe or Box.” Immediate backfilling is permitted if joints consist of materials other than mortar. Take special precautions in placing and compacting the backfill to avoid any movement of the pipe or damage to the joints. Do not use heavy earth-moving equipment to haul over the structure until a minimum of 4 ft. of permanent or temporary compacted fill has been placed over the structure unless otherwise shown on the plans or permitted in writing. Remove and replace pipe damaged by the Contractor at no expense to the Department.

3.2. Laying Pipe. Start the laying of pipe on the bedding at the outlet end with the spigot or tongue end pointing downstream, and proceed toward the inlet end with the abutting sections properly matched, true to the established lines and grades unless otherwise authorized. Fit, match, and lay the pipe to form a smooth, uniform conduit. Cut cross trenches in the foundation to allow the barrel of the pipe to rest firmly upon the bedding where bell-and-spigot pipe is used. Cut cross trenches no more than 2 in. larger than the bell ends of the pipe. Lower sections of pipe into the trench without damaging the pipe or disturbing the bedding and the sides of the trench. Carefully clean the ends of the pipe before the pipe is placed. Prevent the earth or bedding material from entering the pipe as it is laid. Lay the pipe in the trench, when elliptical pipe with circular reinforcing or circular pipe with elliptical reinforcing is used, so the markings for the top or bottom are not more than 5° from the vertical plane through the longitudinal axis of the pipe. Remove and re-lay, without extra compensation, pipe that is not in alignment or shows excessive settlement after laying.

Lay multiple lines of reinforced concrete pipe with the centerlines of the individual barrels parallel. Use the clear distances between outer surfaces of adjacent pipes shown in Table 5 unless otherwise shown on the plans. Use the equivalent diameter from Table 2 or Table 3 for arch pipe or horizontal elliptical pipe to determine the clear distance requirement in Table 5.

http://ftp.dot.state.tx.us/pub/txdot-info/cst/TMS/500-C_series/pdfs/aph526.pdf

Table 5 Minimum Clear Distance between Pipes

Equivalent Diameter Min Clear Distance

18 in. 9 in.

24 in. 11 in.

30 in. 1 ft. 1 in.

36 in. 1 ft. 3 in.

42 in. 1 ft. 5 in.

48 in. 1 ft. 7 in.

54 in. 1 ft. 11 in.

60 to 84 in. 2 ft.

3.3. Jointing. Make available an appropriate rolling device similar to an automobile mechanic’s “creeper” for conveyance through small-size pipe structures.

3.3.1. Joints Sealed with Hydraulic Cement Mortar. Use Type S mortar meeting the requirements of ASTM C270. Clean and wet the pipe ends before making the joint. Plaster the lower half of the bell or groove and the upper half of the tongue or spigot with mortar. Pack mortar into the joint from both inside and outside the pipe after the pipes are tightly jointed. Finish the inside smooth and flush with adjacent joints of pipe.

Form a bead of semicircular cross-section over tongue-and-groove joints outside the pipe, extending at least 1 in. on each side of the joint. Form the mortar for bell-and-spigot joints to a 45° fillet between the outer edge of the bell and the spigot. Cure mortar joints by keeping the joints wet for at least 48 hr. or until the backfill has been completed, whichever comes first. Place fill or backfill once the mortar jointing material has cured for at least 6 hr. Conduct jointing only when the atmospheric temperature is above 40°F. Protect mortared joints against freezing by backfilling or other approved methods for at least 24 hr.

Driveway culverts do not require mortar banding on the outside of the pipe.

Furnish pipes, with approval, that are large enough for a person to enter with the groove between 1/2 in. and 3/4 in. longer than the tongue. Such pipe may be laid and backfilled without mortar joints. Clean the space on the interior of the pipe between the end of the tongue and the groove of all foreign material, thoroughly wet and fill with mortar around the entire circumference of the pipe, and finish flush after the backfilling has been completed.

3.3.2. Joints Using Cold-Applied, Plastic Asphalt Sewer Joint Compound. Ensure both ends of the pipes are clean and dry. Trowel or otherwise place a 1/2–in. thick layer of the compound in the groove end of the pipe covering at least 2/3 of the joint face around the entire circumference. Shove home the tongue end of the next pipe with enough pressure to make a tight joint. Remove any excess mastic projecting into the pipe after the joint is made. Backfill after the joint has been inspected and approved.

3.3.3. Joints Using Rubber Gaskets. Make the joint assembly according to the recommendations of the gasket manufacturer. Make joints watertight when using rubber gaskets. Backfill after the joint has been inspected and approved.

3.3.4. Joints Using Pre-Formed Flexible Joint Sealants. Install pre-formed flexible joint sealants in accordance with the manufacturer’s recommendations. Place the joint sealer so no dirt or other deleterious materials come in contact with the joint sealing material. Pull or push home the pipe with enough force to properly seal the joint. Remove any joint material pushed out into the interior of the pipe that would tend to obstruct the flow. Store pre-formed flexible joint sealants in an area warmed naturally or artificially to above 70°F in an approved manner when the atmospheric temperature is below 60°F. Apply flexible joint sealants to pipe joints immediately before placing pipe in trench, and connect pipe to previously laid pipe. Backfill after the joint has been inspected and approved.

3.4. Connections and Stub Ends. Make connections of concrete pipe to existing pipes, pipe storm drains, or storm drain appurtenances as shown on the plans.

Mortar or concrete the bottom of existing structures if necessary to eliminate any drainage pockets created by the connections. Repair any damage to the existing structure resulting from making the connections.

Make connections between concrete pipe and corrugated metal pipe with a suitable concrete collar and a minimum thickness of 4 in. unless otherwise shown on the plans.

Finish stub ends for connections to future work not shown on the plans by installing watertight plugs into the free end of the pipe.

Fill lift holes with concrete, mortar, or precast concrete plugs after the pipe is in place.

4. MEASUREMENT

This Item will be measured by the foot. Measurement will be made between the ends of the pipe barrel along the flow line, not including safety end treatments. Safety end treatments will be measured in accordance with Item 467, “Safety End Treatment.” Pipe that will be jacked, bored, or tunneled will be measured in accordance with Item 476, “Jacking, Boring, or Tunneling Pipe or Box.” Measurement of spurs, branches, or new connecting pipe will be made from the intersection of the flow line with the outside surface of the pipe into which it connects. Where inlets, headwalls, catch basins, manholes, junction chambers, or other structures are included in lines of pipe, the length of pipe tying into the structure wall will be included for measurement, but no other portion of the structure length or width will be included.

For multiple pipes, the measured length will be the sum of the lengths of the barrels.

This is a plans quantity measurement Item. The quantity to be paid is the quantity shown in the proposal unless modified by Article 9.2., “Plans Quantity Measurement.” Additional measurements or calculations will be made if adjustments of quantities are required.

5. PAYMENT

The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Reinforced Concrete Pipe,” “Reinforced Concrete Pipe (Arch),” or “Reinforced Concrete Pipe (Elliptical)” of the size and D-load specified or of the size and class specified. This price is full compensation for constructing, furnishing, transporting, placing, and joining pipes; shaping the bed; cutting pipes on skew or slope; connecting to new or existing structures; breaking back, removing, and disposing of portions of the existing structure; replacing portions of the existing structure; cutting pipe ends on skew or slope; and equipment, labor, tools, and incidentals.

Protection methods for excavations greater than 5 ft. deep will be measured and paid for as required under Item 402, “Trench Excavation Protection,” or Item 403, “Temporary Special Shoring.” Excavation, shaping, bedding, and backfill will be paid for in accordance with Item 400, “Excavation and Backfill for Structures.”

When jacking, boring, or tunneling is used at the Contractor’s option, payment will be made under this Item.

When jacking, boring or tunneling is required, payment will be made under Item 476, “Jacking, Boring or Tunneling Pipe or Box.”

Item 467

Safety End Treatment

1. DESCRIPTION

Furnish, construct, and install safety end treatments for drainage structures, or install or replace pipe runners or pipe runner assemblies on existing drainage structures.

2. MATERIALS

2.1. General. Furnish materials in accordance with the following.

Item 420, “Concrete Substructures,”

Item 421, “Hydraulic Cement Concrete,”

Item 432, “Riprap,”

Item 440, “Reinforcement for Concrete,”

Item 442, “Metal for Structures,”

Item 445, “Galvanizing,”

Item 460, “Corrugated Metal Pipe,” and

Item 464, “Reinforced Concrete Pipe.”

Use Class C concrete for cast-in-place and precast concrete units unless otherwise shown on the plans.

Furnish cast-in-place or precast safety end treatments unless otherwise shown on the plans. Furnish Class B concrete for concrete riprap unless otherwise shown on the plans. Provide galvanized steel for prefabricated metal end sections in accordance with Item 460, “Corrugated Metal Pipe.”

Furnish pipe runners in accordance with the following:

ASTM A1085;

ASTM A53, Type E or S, Grade B;

ASTM A500, Grade B; or

API 5L, Grade X42.

Furnish plates and angles in accordance with ASTM A36. Furnish nuts and bolts in accordance with ASTM A307. Galvanize pipes, plates, angles, nuts, and bolts in accordance with Item 445, “Galvanizing.”

2.2. Fabrication. Fabricate cast-in-place concrete units and precast units in accordance with Item 420, “Concrete Substructures.” Provide either prefabricated metal end sections or mitered CMP when specified for the pipe structure unless otherwise shown on the plans.

Provide one of the following when reinforced concrete pipe (RCP) is specified for the pipe structure, unless otherwise shown on the plans:

mitered RCP or precast safety end treatment (SET) units. Provide riprap only if the plans specifically require it for this alternative.

2.2.1. SET Types.

2.2.1.1. Type I. Provide Type I SET consisting of reinforced concrete headwalls or wingwalls and pipe runners in accordance with the details shown on the plans when required.

2.2.1.2. Type II. Provide Type II SET in accordance with the details shown on the plans consisting of the following:

CMP or RCP mitered to the proper slope, concrete riprap and pipe runners, when required;

prefabricated metal end sections, concrete riprap and pipe runners, when required; or precast SET units, concrete riprap, when required, and pipe runners, when required.

2.2.2. Lifting Holes. Provide no more than 4 lifting holes in each section for precast units. Lifting holes may be cast, cut into fresh concrete after form removal, or drilled. Provide lifting holes large enough for adequate lifting devices based on the size and weight of the section. The maximum hole diameter is 3 in. at the inside surface of the wall and 4 in. at the outside surface. Cut no more than 1 longitudinal wire or 2 circumferential wires per layer of reinforcing steel when locating lift holes. Repair spalled areas around lifting holes.

2.2.3. Marking. Clearly mark the following on each precast unit, mitered CMP, mitered RCP, or metal end section before shipment from the casting or fabrication yard:

the date of manufacture, the name or trademark of the manufacturer, and the type and size designation.

2.2.4. Storage and Shipment. Store precast units on a level surface. Do not place any loads on precast units until the design strength is reached. Do not ship units until design strength requirements have been met.

2.2.5. Causes for Rejection. Precast units may be rejected for not meeting any one of the specification requirements. Individual units may also be rejected for fractures or cracks passing through the wall or surface defects indicating honeycombed or open texture surfaces. Remove rejected units from the project and replace with acceptable units meeting the requirements of this Item.

2.2.6. Defects and Repairs. Occasional imperfections in manufacture or accidental damage sustained during handling may be repaired. The repaired units will be acceptable if they conform to the requirements of this Item and the repairs are sound and properly finished and cured in conformance with pertinent specifications.

Repair damaged galvanizing in accordance with Section 445.3.5., “Repairs.”

3. CONSTRUCTION

3.1. General. Remove portions of existing structures in accordance with Section 420.4.8., “Extending Existing Substructures.” Drill, dowel, and grout in accordance with Item 420, “Concrete Substructures.” Furnish concrete riprap in accordance with Item 432, “Riprap.”

Provide riprap on all prefabricated metal end sections.

3.2. Excavation, Shaping, Bedding, and Backfill. Excavate, shape, bed, and backfill in accordance with Item 400, “Excavation and Backfill for Structures.” Take special precautions in placing and compacting the backfill to avoid any movement or damage to the units. Bed precast units on foundations of firm and stable material accurately shaped to conform to the bases of the units.

3.3. Placement of Precast Units. Provide adequate means to lift and place the precast units. Fill lifting holes with mortar or concrete and cure. Precast concrete or mortar plugs may be used.

3.4. Connections. Make connections to new or existing structures in accordance with the details shown on the plans. Furnish jointing material in accordance with Item 464, “Reinforced Concrete Pipe.”

Also remove a length of the existing pipe from the headwall to the joint when removing existing headwalls as shown on the plans or as approved. Re-lay the removed pipe if approved, or furnish and lay a length of new pipe.

3.5. Install or Replace Pipe Runners or Assemblies. Install or replace individual pipe runners or pipe runner assemblies on existing drainage structures as indicated on the plans.

4. MEASUREMENT

SETs of all types will be measured by each barrel of each structure end.

Pipe runners or pipe runner assemblies installed or replaced on existing structure will be measured by each installed or replaced on each structure end.

5. PAYMENT

The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for the various designations of “Safety End Treatment” specified as follows:

SET (Type I) (Barrel Span) (Wall Height) (Slope, Horizontal:Vertical) (Orientation, Cross or Parallel)

SET (Type I) (Pipe Diameter or Design) (Slope, Horizontal:Vertical) (Orientation, Cross or Parallel)

SET (Type II) (Pipe Diameter or Design) (Pipe Material) (Slope, Horizontal:Vertical) (Orientation, Cross or Parallel)

SET (Pipe Runner)

SET (Pipe Runner Assembly)

For payment purposes, the wingwall heights of Type I SETs for box culverts will be rounded to the nearest foot.

This price is full compensation for constructing, furnishing, transporting, and installing the end treatments;

pipe runners, or pipe runner assemblies, connecting to existing structure; breaking back, removing and disposing of portions of the existing structure, removing and disposing of existng pipe runner or pipe runner assemblies, and replacing portions of the existing structure as required to make connections; excavation and backfill; furnishing concrete, reinforcing steel, corrugated metal pipe or reinforced concrete pipe, and pipe runners; and concrete riprap, nuts, bolts, plates, angles, equipment, labor, tools, and incidentals.

The removal and re-laying of existing pipe or the furnishing of new pipe to replace existing pipe will not be paid for directly but will be considered subsidiary to this Item.

The mitered length of CMP or RCP that is a part of the SET (Type II) will not be paid for directly but will be considered subsidiary to this Item. The limits for payment for pipe will be as shown on the plans and paid for in accordance with the pertinent bid item.

The limits of riprap to be included in the price bid for each SET will be shown on the plans. Any riprap placed beyond the limits shown will be paid in accordance with Item 432, “Riprap.” Riprap between multiple precast SET units will be required as shown on the plans and is included in the price bid for SET.

When precast SETs are provided as an option to mitered RCP, riprap aprons will not be required unless the plans specifically require riprap aprons for precast SET units. The plans will show the limits of the riprap to be included with the precast SET for payment.

32 14 33.13 PERMEABLE PLASTIC PAVING | TRUEGRID PRO PLUS | 1

PRODUCT GUIDE SPECIFICATION

TRUEGRID PRO PLUS GRAVEL PAVING SYSTEM (24"X24"X1.8")(OR

EQUIVALENT), (FULL SECTION INSTALLED), 10" BASE (1" TO 1.5" UNIFORM

CLEAN WASHED ANGULAR STONE), GEOTEXTILE FABRIC, & EXCAVATION

SECTION 32 14 33.13 – PERMEABLE PLASTIC PAVING

REV 11-06-23 v4

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Base material, over sub base prepared by others.

B. Porous pavement system with S-flexural joints for seasonal expansion and contraction.

C. Parking, fire lane, and traffic delineation.

D. Gravel fill.

E. Grass fill.

1.2 RELATED REQUIREMENTS

A. Section 31 20 00 – Earth Moving: Subgrade Preparation.

B. Section 33 41 00 – Subdrainage: Subsurface Drainage.

C. Section 32 10 00 – Bases, Ballasts, and Paving.

D. Section 32 80 00 – Irrigation: Irrigation System.

E. Section 32 30 00 – Site Improvements.

F. Section 32 92 00 – Turf and Grasses.

32 14 33.13 PERMEABLE PLASTIC PAVING | TRUEGRID PRO PLUS | 2

1.3 PREINSTALLATION MEETINGS

A. Convene pre-installation meeting a minimum of two weeks prior to start of porous paving systems Specifier Notes:

B. Verify project requirements, subbase and base conditions, manufacturer’s installation instructions and coordinate with other related work.

C. Require attendance of parties directly affecting work of this section, including the contractor, architect, engineer, and installer. Manufacturer’s representative may attend by phone conference as needed.

1.4 SUBMITTALS

A. Submit under provisions of Section 01.

B. Product Data: Submit manufacturer’s product data.

1. Preparation instructions and recommendations.

2. Storage and handling requirements and recommendations.

3. Installation methods.

C. Shop drawings: Submit manufacturer’s shop drawings including laying pattern and parking delineation locations.

D. Samples: Submit two square samples of TRUEGRID Paver units.

E. LEED and other Sustainable Design Submittals: Provide documentation of how the requirements for credit/certification will be met including, but not limited to: Recycled content, stormwater management, heat-island mitigation, water use reduction, site development, and regional materials.

F. Manufacturer’s Certificates: Certify products meet or specified requirements.

G.…