B08_Attach_(2)_Tuolumne_Meadows_WD_Sys_Vol_2_IFB_Specs_10OCT2024.pdf

YOSEMITE NATIONAL PARK

CALIFORNIA

Tuolumne Meadows Water Distribution System Repair Project

YOSE

228647

Volume 2 of 2 Division 02 through Division 49

PROJECT SPECIFICATIONS

NATIONAL PARK SERVICE (NPS)

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SPECIFICATIONS

SECTION 01 45 33, SPECIAL INSPECTION, OBSERVATION, AND TESTING

SECTION 01 88 15, ANCHORAGE AND BRACING

DIVISION 03 – CONCRETE

DIVISION 05 – METALS

SECTION 13 34 20, PRECAST CONCRETE BUILDING

Thomas E. Paige 10/08/2024

Date Signed: 10/9/2024

Signed: 10/8/2024

Exp: 09-30-25 10/09/2024

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SPECIFICATIONS

SECTION 32 00 00, TREE REMOVAL AND PROTECTION

SECTION 32 91 19.13, TOPSOIL PLACEMENT AND GRADING

SECTION 32 92 00, RESTORATION TURF AND GRASSES

Linda Cyra-Korsgaard

END OF SECTION

YOSE 228647 TABLE OF CONTENTS

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TABLE OF CONTENTS

Pages

SPECIFICATIONS

DIVISION 01—GENERAL REQUIREMENTS

01 11 00 Summary of Work .................................................................... 1- 3 Supplements:

Construction Constraints .......................................................... 1- 2 Notice of Transmittal, Geotechnical Data for Yosemite National Park Tuolumne Meadows Water Line ... 1- 92 01 26 01 Contract Modification Procedures ........................................... 1- 6 01 27 00 Definition of Contract Line Items ............................................ 1- 3 01 31 00 Project Management and Coordination ................................... 1- 9 01 32 16 Construction Schedule ............................................................. 1- 9 01 32 33 Photo Documentation............................................................... 1- 2 01 33 23 Submittal Procedures ............................................................... 1- 8 01 35 13.22 Archeological Protection ......................................................... 1- 4 01 35 13.25 Natural Resources Protection ................................................... 1- 15 01 35 25 Explosives ................................................................................ 1- 4 01 35 23 Safety Requirements ................................................................ 1- 5 01 35 91 Historic Preservation Treatment Procedures ........................... 1- 7 01 40 00 Quality Requirements .............................................................. 1- 8 Supplement:

Statement of Structural Tests and Special Inspections ............ 1- 22 01 42 00 Reference Standards................................................................. 1- 3 01 43 33 Manufacturers’ Field Services ................................................. 1- 4 Supplement:

Manufacturer's Certificate of Proper Installation ..................... 1- 1 01 45 33 Special Inspection, Observation, and Testing .......................... 1- 6 Supplement:

Contractor’s Statement of Responsibility ................................ 1- 2 01 50 00 Temporary Facilities and Controls ........................................... 1- 6 01 57 19.11 Indoor Air Quality Management .............................................. 1- 3 01 57 19.12 Noise and Acoustics Management ........................................... 1- 2 01 57 23 Temporary Storm Water Pollution Prevention ........................ 1- 8 01 57 23.10 Temporary Stream Diversion Systems .................................... 1- 7 01 57 28 Temporary Flow Control ......................................................... 1- 5 01 67 00 Product Requirements .............................................................. 1- 8 Supplement:

Manufacturer’s Certificate of Compliance .............................. 1- 1 01 73 29 Cutting and Patching ................................................................ 1- 3

Pages

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01 73 40 Execution ................................................................................. 1- 6 Supplement:

Temporary Water Service Application and Policy .................. 1- 1 01 74 19 Construction Waste Management and Disposal ...................... 1- 5 Supplement:

Project Waste Management Plan Worksheet Sample .............. 1- 2 01 77 00 Closeout Procedures................................................................. 1- 5 Supplement:

Closeout-Operation Maintenance-Requirements

Template+Sample ................................................................. 1- 9 01 78 23 Operation and Maintenance Data ............................................. 1- 9 Supplement:

Equipment Data Sheet.............................................................. 1- 1 01 79 00 Demonstration and Training .................................................... 1- 4 01 81 13 Sustainable Design Requirements for Non-Leed™ Projects ... 1- 3 01 88 15 Anchorage and Bracing ............................................................ 1- 6 01 91 14 Equipment Testing and Facility Startup .................................. 1- 5 Supplements:

Facility Performance Demonstration/Certification Form ........ 1- 1 Tuolumne Meadows Water Distribution Existing

Facilities Startup Constraints and Phasing ............................ 1- 3

DIVISION 02—EXISTING CONDITIONS

02 41 00 Demolition ............................................................................... 1- 7

DIVISION 03—CONCRETE

03 01 32 Repair of Vertical and Overhead Concrete Surfaces ............... 1- 12 03 01 33 Repair of Horizontal Concrete Surfaces .................................. 1- 12 03 10 00 Concrete Forming and Accessories ......................................... 1- 6 03 15 00 Concrete Joints and Accessories .............................................. 1- 7 03 21 00 Steel Reinforcement ................................................................. 1- 5 03 30 00 Cast-in-Place Concrete............................................................. 1- 27 Supplements:

Concrete Mix Design, Class 4500F2S1W1C1......................... 1- 2 Concrete Mix Design, Class 3500F1S1W1C1......................... 1- 2 03 39 00 Concrete Curing ....................................................................... 1- 5 03 40 00 Precast Concrete Structures ..................................................... 1- 4 03 62 00 Grouting ................................................................................... 1- 10 Supplement:

24-hour Evaluation of Nonshrink Grout Test Form and

Grout Testing Procedures ..................................................... 1- 3 03 63 00 Concrete Doweling .................................................................. 1- 4

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03 64 23 Epoxy Resin Injection Grouting .............................................. 1- 11 03 64 24 Polyurethane Injection Grouting .............................................. 1- 8

DIVISION 04—(NOT USED)

DIVISION 05—METALS

05 05 19 Post-Installed Anchors ............................................................. 1- 8 05 50 00 Metal Fabrications ................................................................... 1- 17 05 52 16 Aluminum Railings .................................................................. 1- 8

DIVISION 06 THROUGH DIVISION 08 (NOT USED)

DIVISION 09—FINISHES

09 97 13 Steel Tank Coatings ................................................................. 1- 17 Supplements:

Paint System Data Sheet (PSDS) ............................................. 1- 1 Paint Product Data Sheet (PPDS) ............................................ 1- 1

DIVISION 10 THROUGH DIVISION 12 (NOT USED)

DIVISION 13—SPECIAL CONSTRUCTION

13 34 20 Precast Concrete Building........................................................ 1- 6

DIVISION 14 THROUGH DIVISION 25 (NOT USED)

DIVISION 26—ELECTRICAL

26 05 02 Basic Electrical Requirements ................................................. 1- 6 26 05 04 Basic Electrical Materials and Methods .................................. 1- 11 26 05 05 Conductors ............................................................................... 1- 14 26 05 26 Grounding and Bonding for Electrical Systems ...................... 1- 5 26 05 33 Raceway and Boxes ................................................................. 1- 26 26 08 00 Commissioning of Electrical Systems ..................................... 1- 14 26 24 16 Panelboards .............................................................................. 1- 7 26 27 26 Wiring Devices ........................................................................ 1- 6

DIVISION 27 THROUGH DIVISION 30 (NOT USED)

DIVISION 31—EARTHWORK

31 10 00 Site Clearing............................................................................. 1- 5 31 23 13 Subgrade Preparation ............................................................... 1- 3 31 23 16 Excavation................................................................................ 1- 4 31 23 19.01 Dewatering ............................................................................... 1- 4

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31 23 23.15 Trench Backfill ........................................................................ 1- 11 31 32 00 Soil Stabilization ...................................................................... 1- 4

DIVISION 32—EXTERIOR IMPROVEMENTS

32 00 00 Tree Removal and Protection ................................................... 1- 4 32 11 23 Aggregate Base Courses .......................................................... 1- 5 32 12 16 Asphalt Paving ......................................................................... 1- 9 32 17 23 Pavement Markings ................................................................. 1- 2 32 91 19.13 Topsoil Placement and Grading ............................................... 1- 5 32 92 00 Restoration Turf and Grasses ................................................... 1- 3

DIVISION 33—UTILITIES

33 05 01 Conveyance Piping—General .................................................. 1- 7 33 05 01.10 High-Density Polyethylene (HDPE) Pressure Pipe and Fittings............................................................................ 1- 12 33 12 13 Water Service Connections ...................................................... 1- 5 33 13 00 Disinfection of Water Utility Distribution Facilities ............... 1- 4 33 16 13.13 Welded Steel Tank ................................................................... 1- 12

DIVISION 34 THROUGH DIVISION 39 (NOT USED)

DIVISION 40—PROCESS INTERCONNECTIONS

40 05 15 Piping Support Systems ........................................................... 1- 8 40 27 00 Process Piping—General ......................................................... 1- 18 40 27 00.01 Ductile Iron Pipe and Fittings Data Sheet ................................ 1- 3 40 27 00.03 Carbon Steel Pipe and Fittings Data Sheet .............................. 1- 3 40 27 00.08 Stainless Steel Pipe, Tubing, and Fittings Data Sheet ............. 1- 2 40 27 01 Process Piping Specialties........................................................ 1- 8 40 27 02 Process Valves and Operators .................................................. 1- 20 40 42 13 Piping Insulation ...................................................................... 1- 6 40 80 01 Process Piping Leakage Testing .............................................. 1- 4

DIVISION 41 THROUGH DIVISION 49 (NOT USED)

REFERENCE DOCUMENTS (BOUND SEPARATELY)

2012 Bridge Inspection Report, Tuolumne River Bridge, Tioga Road Over Tuolumne River, Yosemite National Park 1932 Tioga Road Construction the Drawings

DRAWINGS (BOUND SEPARATELY)

SPECIFICATIONS

YOSE 228647 DEMOLITION

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SECTION 02 41 00

DEMOLITION

PART 1 GENERAL

1.01 REFERENCES

A. The following is a list of standards which may be referenced in this section:

1. American National Standards Institute (ANSI): A10.6, Safety Requirements for Demolition Operations.

2. Occupational Safety and Health Administration (OSHA), U.S. Code of Federal Regulations (CFR) Title 29 Part 1926—Occupational Safety and Health Regulations for Construction.

3. Environmental Protection Agency (EPA), U.S. Code of Federal Regulations (CFR), Title 40:

a. Part 61—National Emission Standards for Hazardous Air

Pollutants.

b. Part 82—Protection of Stratospheric Ozone.

c. Part 273—Standards for Universal Waste Management.

1.02 DEFINITIONS

A. ACM: Asbestos-containing material.

B. Demolition: Dismantling, razing, destroying, or wrecking of any fixed building or structure or any part thereof. Demolition also includes removal of pipes, manholes tanks, conduit, and other underground facilities, whether as a separate activity or in conjunction with construction of new facilities.

C. Modify: Provide all necessary material and labor to modify an existing item to the condition indicated or specified.

D. Relocate: Remove, protect, clean and reinstall equipment, including electrical, instrumentation, and all ancillary components required to make the equipment fully functional, to the new location identified on the Drawings.

E. Renovation: Altering a facility or one or more facility components in any way.

F. Salvage/Salvageable: Remove and deliver, to the specified location(s), the equipment, building materials, or other items so identified to be saved from destruction, damage, or waste; such property to remain that of Owner. Unless otherwise specified, title to items identified for demolition shall revert to Contractor.

G. Abandon In Place: Disconnect below grade pipe to be abandoned in place from the water system; existing above grade appurtenances and facilities. All

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open ends of pipe to be abandoned in place shall be capped with minimum 2-feet of CLSM to prevent water entry into the abandoned pipe. Remove all above grade appurtenances, pipe ends, and facilities.

H. Abandon in Place with Slurry Fill: Disconnect below grade pipe to be abandoned in place from the water system; existing above grade appurtenances and facilities. Fill pipe with slurry to prevent water conveyance in abandoned pipe. Remove all above grade appurtenances, pipe ends, and facilities.

1.03 SUBMITTALS

A. Informational Submittals:

1. Submit proposed Demolition/Renovation Plan, in accordance with requirements specified herein, for approval before such Work is started.

2. Submit copies of any notifications, authorizations and permits required to perform the Work.

3. Copies of reports and other documentation required for abandoning wells.

1.04 REGULATORY AND SAFETY REQUIREMENTS

A. When applicable, demolition Work shall be accomplished in strict accordance with 29 CFR 1926-Subpart T.

B. Comply with federal, state, and local hauling and disposal regulations. In addition to the requirements of the General Conditions, Contractor's safety requirements shall conform to ANSI A10.6.

C. Furnish timely notification of this demolition project to applicable federal, state, regional, and local authorities in accordance with 40 CFR 61-Subpart M.

1.05 DEMOLITION/RENOVATION PLAN

A. Demolition/Renovation Plan shall provide for safe conduct of the Work and shall include:

1. Detailed description of methods and equipment to be used for each operation;

2. The Contractor's planned sequence of operations, including coordination with other work in progress;

3. Disconnection schedule of utility services.

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1.06 SEQUENCING AND SCHEDULING

A. The Work of this Specification shall not commence until Contractor's Demolition/Renovation Plan has been approved by Contracting Officer's Representative.

B. Include the Work of this Specification in the progress schedule, as specified in Section 01 32 16 "Construction Schedule."

C. Areas in which the Work is to be accomplished will be available in accordance with the following schedule:

1. Water treatment plan after construction and commissioning of the new water system.

PART 2 PRODUCTS (NOT USED)

PART 3 EXECUTION

3.01 EXISTING FACILITIES TO BE DEMOLISHED OR RENOVATED

A. Facilities: Portions of buildings and other areas scheduled for selective demolition, partial demolition, and renovation Work are as shown.

B. Structures:

1. Existing above-grade structures indicated shall be removed to 5 feet below grade.

2. Core drill concrete slabs and other concrete improvements scheduled to remain in place below ground, or break holes at the structure's lowest point to allow water to freely migrate through.

C. Utilities and Related Equipment:

1. Notify Contracting Officer's Representative or appropriate utilities to turn off affected services at least 48 hours before starting demolition activities.

2. Remove existing utilities as indicated and terminate in a manner conforming to the nationally recognized code covering the specific utility and approved by Contracting Officer's Representative.

3. When utility lines are encountered that are not indicated on the Drawings, notify Contracting Officer's Representative prior to further work in that area.

4. Remove meters and related equipment and deliver to a location as determined by the Contracting Officer's Representative.

5. Excavate and remove utility lines serving buildings to be demolished to a distance of 10 feet beyond the outside perimeter of the demolition.

6. Provide a permanent leak-proof closure for water and gas lines.

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7. Plug sewer lines with concrete to a minimum plug length of 2 feet to prevent groundwater infiltration.

D. Concrete:

1. Core drill corners of new opening to avoid overcutting adjacent reinforcing in existing concrete to remain. Saw concrete along straight lines to a depth of not less than 2 inches. Make each cut in walls perpendicular to the face and in alignment with the cut in the opposite face. Break out the remainder of the concrete provided that the broken area is concealed in the finished Work, and the remaining concrete is sound.

2. At locations where the broken face cannot be concealed, grind smooth or saw cut entirely through the concrete. Repair exposed rebar ends and embeds as shown on the Drawings.

3. Where new concrete adjoins existing concrete, thoroughly clean and mechanically roughen existing concrete surfaces to roughness profile of 3/16 inch. Rebar and small embeds at existing concrete may be required to be left to engage new concrete. Saturate surface with water for 24 hours prior to placing new concrete. The new Work shall tie into the existing construction as shown on the Drawings.

E. Electrical:

1. Cut off concealed or embedded conduit, boxes, or other materials a minimum of 3/4 inch below final finished surface.

2. When removing designated equipment, conduit and wiring may require rework to maintain service to other equipment.

3. Rework existing circuits, or provide temporary circuits as necessary during renovation to maintain service to existing lighting and equipment not scheduled to be renovated. Existing equipment and circuiting shown are based upon limited field surveys. Verify existing conditions, make all necessary adjustments, and record the Work on the Record Drawings. This shall include, but is not limited to, swapping and other adjustments to branch circuits and relocation of branch circuit breakers within panelboards as required to accomplish the finished work.

4. Reuse of existing luminaires, devices, conduits, boxes, or equipment will be permitted only where specifically indicated.

5. Raceways and cabling not scheduled for reuse.

6. Inaccessibly Concealed: Cut off and abandon in place.

7. Exposed or Concealed Above Accessible Ceilings: Remove.

8. Raceways and Cabling Scheduled for Future Use: Cap/seal and tag.

9. Relocating Equipment: Extend existing wiring or run new wiring from the source.

10. Where the existing raceway is concealed, the outlet box shall be cleaned, and a blank cover plate installed.

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11. Where the concealed raceway is uncovered remove raceway (or extended to new location if appropriate).

12. Provide new typewritten panelboard circuit directory cards.

3.02 PROTECTION

A. Traffic Control Signs: Where pedestrian and driver safety is endangered in the area of removal Work, use traffic barricades with flashing lights.

B. Existing Work:

1. Survey the Site and examine the Drawings and Specifications to determine the extent of the Work before beginning any demolition or renovation.

2. Take necessary precautions to avoid damage to existing items scheduled to remain in place, to be reused, or to remain the property of Owner; any Contractor-damaged items shall be repaired or replaced as directed by Contracting Officer's Representative.

3. Provide temporary weather protection during interval between removal of existing exterior surfaces and installation of new to ensure that no water leakage or damage occurs to structure or interior areas of existing building.

4. Ensure that structural elements are not overloaded as a result of or during performance of the Work. Responsibility for additional structural elements or increasing the strength of existing structural elements as may be required as a result of any Work performed under this Contract shall be that of the Contractor. Repairs, reinforcement, or structural replacement must have Contracting Officer's Representative approval.

5. Do not overload pavements to remain.

C. Weather Protection: For portions of the building scheduled to remain, protect building interior and materials and equipment from weather at all times.

Where removal of existing roofing is necessary to accomplish the Work, have materials and workmen ready to provide adequate and temporary covering of exposed areas so as to ensure effectiveness and to prevent loss.

D. Trees: Protect trees within the Site that might be damaged during demolition and are indicated to be left in place, by a 6-foot-high fence. The fence shall be securely erected a minimum of 5 feet from the trunk of individual trees or follow the outer perimeter of branches or clumps of trees. Any tree designated to remain that is damaged during the Work shall be replaced in kind, as approved by the Contracting Officer's Representative.

E. Facilities:

1. Protect electrical and mechanical services and utilities. Where removal of existing utilities and pavement is specified or indicated, provide

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approved barricades, temporary covering of exposed areas, and temporary services or connections for electrical and mechanical utilities.

2. Floors, roofs, walls, columns, pilasters, and other structural elements that are designed and constructed to stand without lateral support or shoring, and are determined by Contractor to be in stable condition, shall remain standing without additional bracing, shoring, or lateral support until demolished, unless directed otherwise by the Contracting Officer's Representative.

3. Protect all facility elements not scheduled for demolition.

4. Provide interior shoring, bracing, or support to prevent movement, settlement, or collapse of structure or element to be demolished and adjacent facilities.

F. Protection of Personnel:

1. During demolition, continuously evaluate the condition of the structure being demolished and take immediate action to protect all personnel working in and around the demolition site.

2. Provide temporary barricades and other forms of protection to protect Owner's personnel and the general public from injury due to demolition Work.

3. Provide protective measures as required to provide free and safe passage of Owner's personnel and the general public to occupied portions of the structure.

3.03 BURNING

A. The use of burning at the Site for the disposal of refuse and debris will not be permitted.

3.04 RELOCATIONS

A. Perform the removal and reinstallation of relocated items as indicated with workmen skilled in the trades involved. Clean all items to be relocated prior to reinstallation, to the satisfaction of Contracting Officer's Representative.

Repair items to be relocated which are damaged or replace damaged items with new undamaged items as approved by Contracting Officer's Representative.

3.05 BACKFILL

A. Do not use demolition debris as backfill material.

3.06 TITLE TO MATERIALS

A. All salvaged equipment and materials will remain the property of Contracting Officer's Representative.

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3.07 DISPOSITION OF MATERIAL

A. Do not remove equipment and materials without approval of Contractor's Demolition/Renovation Plan by Contracting Officer's Representative.

3.08 CLEANUP

A. Debris and rubbish shall be removed from basement and similar excavations.

Debris and rubbish shall be removed and transported in a manner that prevents spillage on streets or adjacent areas. Local regulations regarding hauling and disposal shall apply.

YOSE 228647 REPAIR OF VERTICAL AND OVERHEAD

PW\DEN003\D3167646 CONCRETE SURFACES

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SECTION 03 01 32

REPAIR OF VERTICAL AND OVERHEAD CONCRETE SURFACES

PART 1 GENERAL

1.01 REFERENCES

A. The following is a list of standards which may be referenced in this section:

1. American Concrete Institute (ACI):

a. 301, Specifications for Structural Concrete.

b. 506.2, Specification for Shotcrete.

2. ASTM International (ASTM):

a. A82/A82M, Standard Specification for Steel Wire, Plain, for

Concrete Reinforcement.

b. A185/A185M, Standard Specification for Steel Welded Wire

Reinforcement, Plain, for Concrete.

c. A615/A615M, Standard Specification for Deformed and Plain

Carbon-Steel Bars for Concrete Reinforcement.

d. A706/A706M, Standard Specification for Low-Alloy Steel

Deformed and Plain Bars for Concrete Reinforcement.

e. C42/C42M, Standard Test Method for Obtaining and Testing

Drilled Cores and Sawed Beams of Concrete.

f. C78/C78M, Standard Test Method for Flexural Strength of

Concrete (Using Simple Beam with Third-Point Loading).

g. C109/C109M, Standard Test Method for Compressive Strength of

Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens).

h. C157/C157M, Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete.

i. C293/C293M, Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Center-Point Loading.

j. C348, Standard Test Method for Flexural Strength of Hydraulic- Cement Mortars.

k. C496/C496M, Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens.

l. C531, Standard Test Method for Linear Shrinkage and Coefficient of Thermal Expansion of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes.

m. C596, Standard Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement.

n. C666/C666M, Standard Test Method for Resistance of Concrete to Rapid Freezing and Thawing.

o. C882/C882M, Standard Test Method for Bond Strength of Epoxy- Resin Systems Used with Concrete by Slant Shear.

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p. C1202, Standard Test Method for Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration.

q. C1583/C1583M, Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull-off Method).

r. D4258, Standard Practice for Surface Cleaning Concrete for Coating.

s. D4259, Standard Practice for Abrading Concrete.

t. E699, Standard Practice for Evaluation of Agencies Involved in

Testing, Quality Assurance, and Evaluating of Building Components.

3. NSF International (NSF): 61, Standard for Drinking Water System Components – Health Effects.

1.02 DEFINITIONS

A. Abrasive Blasting: Surface preparation method that uses compressed air intermixed with an abrasive medium to clean surface of substrate concrete, exposed steel, and steel reinforcement. Compressed air and abrasive medium is projected at high speed through a nozzle directly at the surface. Method is used to remove corrosion by-products, laitance, or other materials that may inhibit bond of repair concrete.

B. Defective Area: As defined in Section 03 30 00 "Cast-in-Place Concrete."

C. High-Pressure Water Blasting: Sometimes referred to as hydro-demolition.

Uses water that may contain an abrasive medium, projected under high pressure and high velocity. Used for demolition, cutting, partial or full depth removal, cleaning, scarifying, or roughening of concrete surfaces, or removing existing coatings, for preparation of substrate concrete surfaces.

D. Low-Pressure Spray Mortar: Mortar suitable to be applied by low-pressure spraying, and in small areas may be applied by hand troweling.

E. New Concrete: As defined in Section 03 30 00 "Cast-in-Place Concrete."

1.03 SUBMITTALS

A. Action Submittals:

1. Product data sheets for each material supplied.

2. Drawings supplemented by photographs indicating location, size, estimated quantity, and proposed repair mortar for each repair location in concrete.

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3. Drawings indicating results of sounding for hollow areas including location, size, and estimated quantity of hollow-sounding areas for each repair location.

B. Informational Submittals:

1. Repair Mortar System: Manufacturer’s preparation and installation instructions.

2. Written description of equipment proposed for concrete removal and surface preparation.

3. Certificates: Confirmation material is certified to meet requirements of

NSF 61.

4. Statements of Qualification:

a. Repair mortar system applicator.

b. Independent Testing Laboratory.

5. Field and laboratory test reports.

1.04 QUALITY ASSURANCE

A. Qualifications:

1. Repair Mortar System Applicator: For Repair System B – Low-Pressure Spray Mortar, in lieu of recognition or certification, demonstrate application of repair mortar manufacturer’s system and obtain Certification of Proper Installation.

2. Repair Mortar System Manufacturer’s Representative: Knowledgeable and experienced on technical data and application requirements for specified products.

B. Independent Testing Laboratory: Meet criteria stated in ASTM E699.

C. Pre-repair Conference:

1. Required Meeting Attendees:

a. Contractor.

b. Repair Subcontractor.

c. Contracting Officer's Representative.

2. Schedule and conduct prior to conducting mockups and incorporation of respective products into Project. Notify Contracting Officer's Representative of location and time.

3. Agenda shall include, but not limited to:

a. Review of field conditions. Conduct field observations of Work to be performed.

b. Based on above observations, confirm material selection and make Project-specific repair method recommendations.

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c. Review proposed surface preparation, material application, consolidation, finishing, curing, and protection of repair material from weather conditions.

d. Other specified requirements requiring coordination.

1.05 DELIVERY, STORAGE, AND HANDLING

A. Package repair mortar system products in moisture-resistant bags, pails, or moisture-resistant bulk bags.

B. Deliver, store, and handle repair materials in accordance with manufacturer’s printed instructions.

PART 2 PRODUCTS

2.01 REPAIR SYSTEM B – LOW-PRESSURE SPRAY MORTAR

A. Manufacturers and Products:

1. BASF Construction Chemicals, LLC - Building Systems, Shakopee, MN; MasterEmaco S 488CI.

2. Or equal.

B. Physical Characteristics:

1. One or two-component, cement based, fiber reinforced, shrinkage compensated, gray in color, with a minimum 30-minute working time.

2. Free of chlorides and other chemicals causing corrosion.

C. Functional Characteristics: Sprayable, extremely low permeability, sulfate resistant, easy to use and requiring only addition of water.

D. Performance Characteristics:

1. Cured materials mixed in accordance with manufacturer’s instructions shall conform to the following criteria:

a. Compressive Strength, ASTM C109/C109M at 28 Days: 6,000 psi minimum.

b. Flexural Strength, ASTM C348 at 28 Days: 1,100 psi minimum.

c. Slant Shear Bond Strength, ASTM C882/C882M Test Method

Modified with No Bonding Agent, at 28 Days: 3,000 psi minimum.

d. Splitting Tensile Strength, ASTM C496/C496M at 28 Days:

600 psi minimum.

e. Drying Shrinkage, ASTM C157/C157M Modified at 28 Days or ASTM C531: 0.1 percent maximum.

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f. Chloride Ion Permeability Based on Charge Passed, ASTM C1202: 1,000 coulombs maximum.

g. System shall not produce a vapor barrier.

h. Certified to meet requirements of NSF 61 for contact with potable water.

2.02 REPAIR SYSTEM C – POLYMER-MODIFIED REPAIR MORTAR

A. Manufacturers and Products:

1. Sika Corp., Lyndhurst, NJ; SikaTop 123 PLUS.

2. Or equal.

B. Physical Characteristics: Polymer-modified, one- or two-component, cementitious based, chloride resistant, flowable, gray in color, working time of 20 minutes minimum, surface renovation mortar.

C. Functional Characteristics: None.

D. Performance Characteristics:

1. Cured Mortar Properties:

a. Compressive Strength, ASTM C109/C109M at 28 Days: 7,000 psi minimum.

b. Flexural Strength, ASTM C348 at 28 Days: 1,200 psi minimum.

c. Slant Shear Bond Strength, ASTM C882/C882M Test Method

Modified with No Bonding Agent at 28 Days: 2,000 psi minimum.

d. Splitting Tensile Strength, ASTM C496/C496M at 28 Days:

500 psi minimum.

e. Drying Shrinkage, ASTM C596 at 28 Days: 0.12 percent maximum. Not required for small repair areas approximately 1 square foot in area or less.

f. Freeze Thaw Resistance, ASTM C666/C666M, at 300 Cycles:

90 percent RDM.

g. Chloride Ion Permeability Based on Charge Passed, ASTM C1202: 800 coulombs maximum for liquid holding and belowgrade repairs.

h. Certified to meet requirements of NSF 61 for contact with potable water.

2.03 WATER

A. Clean and free from oil, acid, alkali, organic matter, or other deleterious substances, meeting federal drinking water standards, as specified in Section 03 30 00 "Cast-in-Place Concrete."

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2.04 REINFORCEMENT

A. Deformed Steel Reinforcement: Per Section 03 21 00 "Steel Reinforcement."

B. Tie Wire: 16-gauge, galvanized.

2.05 CEMENTITIOUS BONDING AGENT AND REINFORCEMENT COATING

A. Manufacturers and Products:

1. Sika Corp., Lyndhurst, NJ; Sika Armatec 110 EpoCem.

2. Or equal.

B. Physical Characteristics:

1. Cementitious adhesive, specifically formulated for bonding plastic portland cement concrete or mortar to hardened portland cement concrete.

2. Compatible with and from same manufacturer as the repair system used.

C. Functional Characteristics: None

D. Performance Characteristics:

1. Mixed Bonding Agent Properties:

a. Pot Life: 75 minutes to 105 minutes.

b. Contact Time: 24 hours.

2. Cured Cementitious Adhesive Properties:

a. Splitting Tensile Strength, ASTM C496/C496M at 28 Days:

500 psi minimum.

b. Flexural Strength, ASTM C348: 1,000 psi minimum.

c. Slant Shear Bond Strength, ASTM C882/C882M at 14 Days:

1) 2-Hour Open Time: 2,500 psi minimum.

2) 24-Hour Open Time: 2,000 psi minimum.

3. Bonding agent shall not produce a vapor barrier.

2.06 EVAPORATION RETARDANT

A. As specified in Section 03 39 00 "Concrete Curing."

2.07 CURING COMPOUND

A. As specified in Section 03 39 00 "Concrete Curing."

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PART 3 EXECUTION

3.01 GENERAL

A. New Concrete Work: Repair deficiencies in new concrete structures constructed under this Contract with applicable repair system. Refer to Section 03 30 00 "Cast-in-Place Concrete."

B. Existing Concrete Work: Repair concrete as identified in Contract Documents.

3.02 APPLICATION

A. General:

1. Repair System B: Medium to large areas and number of repair areas.

2. Repair System C: Small and limited areas and number of repair areas.

3.03 PREPARATION

A. Identify unsound and deteriorated concrete by sounding techniques, or as directed by Contracting Officer's Representative, and review proposed extent of repair with Contracting Officer's Representative.

B. Remove unsound, honeycombed, deteriorated, or otherwise defective areas of concrete from work areas.

1. Use 8,000 psi minimum high-pressure water or abrasive blasting machine as required for Site conditions.

2. Remove concrete to abrade substrate concrete surfaces to a minimum amplitude roughness of 3/16 inch measured between high and low points with a 3-foot-long straightedge, in accordance with

ASTM D4259.

3. For existing structures, extent of concrete removal as shown on the Drawings.

4. Where final surface is required to be flush with existing adjacent surface remove existing concrete depth as required for application of minimum thickness of repair mortar.

C. Do not use power-driven jackhammers, chipping hammers, or scabblers unless water blasting is not permitted or practical because of Site conditions, or may cause other damage to equipment or facilities. In such cases where chipping hammers are required, limit size of chipping hammer to 16 pounds or lighter, or use small electric chipping hammer, to reduce formation of micro-fractures in substrate concrete surface.

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D. Following removal of unsound or deteriorated concrete, check substrate concrete surface by sounding techniques to identify unsound concrete remaining or resulting from use of chipping hammer.

E. Remove unsound concrete to satisfaction of Contracting Officer's Representative.

F. Square edges of patch areas by sawing or chipping to avoid tapered shoulders or featheredges. Avoid cutting embedded steel reinforcement. Roughen polished saw-cut edge by high-pressure water blasting or abrasive blasting.

G. Remove concrete adjacent to steel reinforcement to a minimum of 1-inch clearance around steel reinforcement for application and bonding of new repair mortar to circumference of exposed steel reinforcement if one or more of the following surface conditions exist:

1. 50 percent or more of circumference around steel reinforcement is exposed during concrete removal.

2. 25 percent or more of circumference around steel reinforcement is exposed during concrete removal and corrosion is present to extent that more than 25 percent loss of section has occurred.

3. Otherwise evident that bond between existing concrete and steel reinforcement has been destroyed or has deteriorated as determined by Contracting Officer's Representative.

H. Clean exposed steel reinforcement of loose rust and concrete splatter per recommendations of repair material manufacturer and in accordance with

ASTM D4258.

I. Keep areas from which concrete has been removed free of dirt, dust, and water blasting waste slurry. Remove laitance and other bond inhibiting contaminates from prepared areas.

J. Dampen repair areas at least 6 inches beyond area to receive repair mortar for at least 24 hours to provide saturated surface dry (SSD) condition without standing water at time of application of mortar as required by and in accordance with repair mortar manufacturer’s printed instructions.

K. Collect and dispose of spent water and concrete debris from removal operations offsite in manner and location acceptable to Contracting Officer's Representative.

3.04 REINFORCEMENT INSTALLATION

A. Coat exposed new and existing steel reinforcement and reinforcement mesh with cementitious reinforcement coating at same time as substrate concrete is

03 01 32 - 9 coated, as specified below, per repair mortar and cementitious reinforcement coating manufacturers’ printed instructions.

3.05 PROTECTION

A. If cementitious coating or bonding agent is used, protect adjacent surfaces from over application. Promptly remove bonding agent applied beyond repair area.

B. Protect adjacent surfaces, and equipment, from being damaged by overshooting, rebound, and dust, as applicable for repair mortar system used, from low-pressure spray mortar.

3.06 REPAIR SYSTEM B – LOW-PRESSURE SPRAY MORTAR PLACEMENT

A. Mix mortar in accordance with manufacturer’s printed instructions.

B. After priming prepared substrate concrete surface per manufacturer’s recommendations, apply mortar by low-pressure spraying equipment, unless noted otherwise.

C. Bonding Agent:

1. Use bonding agent when manufacture required for hand applied areas, in accordance with repair mortar manufacturer’s instructions.

2. Application of repair mortar over bonding agent shall be completed within time frame recommended by bonding agent manufacturer.

3. Consult with manufacturer for optimum and minimum acceptable degrees of surface tackiness of coat.

D. Work mortar firmly and quickly into repair area.

E. Finish repair mortar to match adjacent concrete surface.

F. Cure as specified in Article Curing.

3.07 REPAIR SYSTEM C – POLYMER-MODIFIED REPAIR MORTAR

PLACEMENT

A. Mix mortar in accordance with manufacturer’s printed instructions.

B. Bond Coat: Apply to prepared substrate concrete surface before application of mortar in accordance with repair mortar manufacturer’s printed instructions.

Do not apply more bond coat than can be covered with mortar before bond coat dries. Do not retemper bond coat.

03 01 32 - 10

C. Place mortar by hand or low-pressure spray and trowel to specified surface finish, in accordance with requirements of repair material’s printed instructions.

D. Finish repair mortar to smooth even surface to match adjacent concrete surface.

E. Cure as specified in Article Curing, and in accordance with manufacturer’s printed instructions.

3.08 CURING

A. Prior to curing, apply water fog to repair mortar system in accordance with repair mortar system manufacturer’s printed instructions.

B. Cure in accordance with repair mortar manufacturer’s printed instructions.

C. Where permitted by repair mortar manufacturer’s printed instructions, commence water or continue water fog curing after repair mortar system application and when curing will not cause erosion of mortar.

D. Continuously water or fog cure repair mortar system for a period of 7 days.

E. Do not cure using curing compound or membrane, unless method is part of repair mortar system manufacturer’s printed instructions and approval is obtained from Contracting Officer's Representative.

F. Cure intermediate layers of repair mortar in accordance with repair mortar manufacturer’s printed instructions.

G. Where curing compound is permitted by repair mortar system manufacturer, apply curing compound in accordance with Section 03 39 00 "Concrete Curing."

3.09 FIELD QUALITY CONTROL

A. Sounding for Hollow Areas:

1. Light hammer tap repaired areas listening for hollow sound to determine areas that have not properly bonded to substrate concrete.

2. Mark hollow areas for removal and replacement.

B. Compression Strength Test:

1. Test in accordance with ASTM C109/C109M, except modified by making samples using repair mortar.

03 01 32 - 11

2. Obtain production samples of mixed wet mortar materials from nozzle, or mixer, during construction for compliance with Specifications for testing at 7 days, and 28 days.

3. Provide a minimum of three samples for each 200 square feet of mortar repair, and a minimum of three samples in total, whichever is greater, for testing.

4. Record location where repair mortar is being applied at time production samples are obtained.

C. Direct Tension Bond Test:

1. Only where required by Contracting Officer's Representative for specific repair location.

2. In Situ Bond Testing: Perform tension bond test in accordance with

ASTM C1583/C1583M.

3. Record locations on in situ bond tests on each type of applied repair mortar.

D. Testing laboratory retained by Contractor must provide the following:

1. Compression Strength Test:

a. Testing will follow a “modified” ASTM C109/C109M.

b. A minimum of three production samples of mixed material will be obtained from each 200 square feet of mortar repair, and a minimum of three samples in total, whichever is greater, for testing at 7 days, and 28 days.

c. Record location where repair mortar is being applied at time production samples are obtained.

2. Direct Tension Bond Test:

a. Only where required by Contracting Officer's Representative for specific repair location.

b. Two core samples will be obtained and tested for each

2,000 square feet of repair work.

c. Cores will be 2-1/2-inch or 3-inch diameter to a total depth equal to at least 2.5 times repair mortar thickness.

d. Bond Strength of Repair Mortar to Substrate Concrete: 300 psi minimum in direct tension without failure or movement.

e. Record locations of Bond Tests on each type of applied repair mortar tested.

E. Retest mortar repairs that do not meet test requirements.

F. Repair and fill holes using same repair mortar where core samples have been removed.

03 01 32 - 12

3.10 MORTAR REPAIR FAILED TEST

A. Remove and replace unacceptable Work.

B. Hollow Sounding Areas: Saw cut hollow sounding areas to a new square edge. Remove unsound mortar repair. Prepare substrate surface and reapply repair mortar as specified herein above.

C. Failed Compression Strength Test: Remove affected areas of repair mortar represented by failed compression strength test results. Prepare substrate surface and reapply repair mortar as specified herein above.

D. Failed Bond Tests: Remove affected areas of repair mortar represented by failed bond test results. Prepare substrate surface and reapply repair mortar as specified herein above.

E. Retest areas where repair mortar was removed and replaced, in accordance with test requirements specified herein above.

3.11 CLEANING

A. Remove overshot low-pressure spray, Repair System B repair mortar and rebound materials as the Work proceeds. Remove waste materials, unsound material from concrete surfaces, material chipped from structure, and water used in preparation of or repair areas, finishing, and curing, and dispose offsite at an approved disposal site.

YOSE 228647 REPAIR OF HORIZONTAL

03 01 33 - 1

SECTION 03 01 33

REPAIR OF HORIZONTAL CONCRETE SURFACES

PART 1 GENERAL

1.01 REFERENCES

A. The following is a list of standards which may be referenced in this section:

1. American Association of State Highway and Transportation Officials (AASHTO): T277, Standard Method of Test for Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration.

2. ASTM International (ASTM):

a. A82/A82M, Standard Specification for Steel Wire, Plain, for

Concrete Reinforcement.

b. A185/A185M, Standard Specification for Steel Welded Wire

Reinforcement, Plain, for Concrete.

c. A615/A615M, Standard Specification for Deformed and Plain

Carbon-Steel Bars for Concrete Reinforcement.

d. A706/A706M, Standard Specification for Low-Alloy Steel

Deformed and Plain Bars for Concrete Reinforcement.

e. C42/C42M, Standard Test Method for Obtaining and Testing

Drilled Cores and Sawed Beams of Concrete.

f. C78/C78M, Standard Test Method for Flexural Strength of

Concrete (Using Simple Beam with Third-Point Loading).

g. C109/C109M, Standard Test Method for Compressive Strength of

Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens).

h. C157/C157M, Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete.

i. C348, Standard Test Method for Flexural Strength of Hydraulic- Cement Mortars.

j. C469, Standard Test Method for Static Modulus of Elasticity and Poisson's Ratio of Concrete in Compression.

k. C496/C496M, Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens.

l. C666/C666M, Standard Test Method for Resistance of Concrete to Rapid Freezing and Thawing.

m. C779/C779M, Standard Test Method for Abrasion Resistance of Horizontal Concrete Surfaces.

n. C882/C882M, Standard Test Method for Bond Strength of Epoxy- Resin Systems Used with Concrete by Slant Shear.

o. C928/C928M, Standard Specification for Packaged, Dry, Rapid- Hardening Cementitious Materials for Concrete Repairs.

REPAIR OF HORIZONTAL YOSE 228647

03 01 33 - 2

p. C1012/C1012M, Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution.

q. C1202, Standard Test Method for Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration.

r. C1583/C1583M, Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull-off Method).

s. D638, Standard Test Method for Tensile Properties of Plastics.

t. D695, Standard Test Method for Compressive Properties of Rigid

Plastics.

u. D4258, Standard Practice for Surface Cleaning Concrete for

Coating.

v. D4259, Standard Practice for Abrading Concrete.

w. E699, Standard Practice for Evaluation of Agencies Involved in

Testing, Quality Assurance, and Evaluating of Building Components.

3. NSF, International (NSF): 61, Standard for Drinking Water System Components – Health Effects.

1.02 DEFINITIONS

A. Abrasive Blasting: Surface preparation method that uses compressed air intermixed with an abrasive medium to clean surface of substrate concrete, exposed steel, and steel reinforcement. Compressed air and abrasive medium is projected at high speed through a nozzle directly at the surface. Method is used to remove corrosion by-products, laitance, or other materials that may inhibit bond of repair concrete.

B. Defective Area: As defined in Section 03 30 00 "Cast-in-Place Concrete."

C. High-Pressure Water Blasting (sometimes referred to as hydro-demolition):

Uses water that may contain an abrasive medium, projected under high pressure and high velocity. Used for demolition, cutting, partial or full depth removal, cleaning, scarifying, or roughening of concrete surfaces, or removing existing coatings, for preparation of substrate concrete surfaces.

D. New Concrete: As defined in Section 03 30 00 "Cast-in-Place Concrete."

1.03 SUBMITTALS

A. Action Submittals:

1. Product data sheets for each material supplied.

2. Drawings supplemented by photographs indicating location, size, estimated quantity, and proposed repair mortar system for each repair location in concrete.

03 01 33 - 3

3. Drawings indicating results of sounding for hollow areas including location, size, estimated quantity, of hollow-sounding areas for each repair location.

B. Informational Submittals:

1. Repair Mortar System: Manufacturer's preparation and installation instructions.

2. Written description of equipment proposed for concrete removal and surface preparation.

3. Certificates:

a. Manufacturer's Certificate of Compliance, in accordance with

Section 01 67 00 "Product Requirements", that repair mortar systems are prepackaged, shrinkage compensated, specially designed for use on horizontal surfaces that are exposed to weather, potable water, or receive traffic.

b. Mortar Manufacturer's Certificate of Proper Installation: As specified in Section 01 67 00 "Product…