B08_Att_2_Specifications_Div_2-49.pdf

REPLACE AND REHABILITATE DOCKS AT

FORT SUMTER, FORT MOULTRIE AND

LIBERTY SQUARE

FORT SUMTER AND FORT MOULTRIE

NATIONAL HISTORICAL PARK

FOSU PMIS NO. 318708 / 322870

CONSTRUCTION

SPECIFICATIONS

DIVISIONS 2-49

FOSU 318708 / 322870 TABLE OF CONTENTS

DIVISION 02: EXISTING CONDITIONS

02 41 00 Demolition (Marine) 02 41 19 Selective Demolition 02 41 20 Siltation Curtain/Debris Booms

DIVISION 03: CONCRETE

03 30 00 Cast-In-Place Concrete 03 30 10 Concrete Rehabilitation 03 45 33 Precast Structural Concrete

DIVISION 05: METALS

05 05 23.16 Structural Welding 05 12 00 Structural Steel 05 50 00 Metal Fabrications 05 50 10 Aluminum Walkway 05 50 13 Miscellaneous Metal Fabrications 05 50 20 Mooring Hardware 05 73 00 Decorative Metal Railings

DIVISION 06: WOOD, PLASTICS, & COMPOSITES

06 13 00 Timber Construction and Treatment 06 13 13 Pier Timberwork

DIVISION 09: FINISHES

09 95 00 Coatings

DIVISION 10: SPECIALTIES

10 14 26 Post and Panel Signage

DIVISION 22: PLUMBING

22 01 00 Basic Plumbing Requirements 22 05 10 Plumbing Demolition and Alterations 22 05 23 General-Duty Valves for Plumbing Piping 22 11 13 Facility Water Distribution Piping 22 40 00 Plumbing Fixtures

DIVISION 26: ELECTRICAL

26 01 00 Basic Electrical Requirements 26 05 19 Low-Voltage Electrical Power Conductors and Cable

FOSU 318708 / 322870 TABLE OF CONTENTS

26 05 26 Grounding and Bonding for Electrical Systems 26 05 33 Raceway and Boxes for Electrical Systems 26 05 53 Identification for Electrical Systems 26 24 16 Panelboards 26 27 26 Wiring Devices 26 50 00 General Lighting Provisions 26 56 00 Exterior Lighting Systems

DIVISION 31: EARTHWORK

31 23 00 Excavation and Fill 31 32 50 Watering 31 62 13.20 Precast/Prestressed Concrete Piles 31 62 17 Pile Load Test (Dynamic) 31 62 19.13 Timber Marine Piles 31 64 00 Pile Jacketing

DIVISION 32: EXTERIOR IMPROVEMENTS

32 01 19 Joints in Rigid Pavement 32 11 16 Base Course for Rigid and Subbases For Flexible Paving 32 12 17 Hot Mix Bituminous Paving 32 13 13.06 Portland Cement Concrete Paving 32 91 13 Soil Preparation 32 91 19 Topsoil 32 92 00 Turf and Grasses

DIVISION 35: WATERWAY AND MARINE CONSTRUCTION

35 42 13 Piles – Marine 35 51 13 Concrete Floating Dock 35 59 13.16 Extruded and Molded Marine Fenders

FOSU 318708 / 322870 02 41 00 –1

DEMOLITION (MARINE)

FOSU 318708 / 322870

SECTION 02 41 00 – DEMOLITION (MARINE)

PART 1 GENERAL

1.1 SUMMARY

A. The work under this section covers all marine demolition including, but not limited to, the removal of timber and concrete piles, concrete pile caps, concrete beams, concrete decks, timber wales, timber chocks, concrete floating docks, miscellaneous hardware, steel, timber, rubble and other material encountered within the limits as indicated on the plans and reference drawings. Note that the existing jib cranes at Fort Moultrie and Fort Sumter and all associated hardware will be removed and stored for future installation onto the new piers.

1.2 REFERENCES

A. The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN SOCIETY OF SAFETY ENGINEERS (ASSE/SAFE)

ASSE/SAFE A10.6 (2006) Safety Requirements for Demolition Operations

1.3 GENERAL REQUIREMENTS

A. Do not begin demolition or deconstruction until authorization is received from the Contracting

Officer. The work of this section is to be performed in a manner that maximizes the value derived from the salvage and recycling of materials. Remove rubbish and debris from the project site. The work includes demolition, deconstruction, salvage of identified items and materials, and removal of resulting rubbish and debris. Remove rubbish and debris from property daily, unless otherwise directed. Store materials that cannot be removed daily in areas specified by the Contracting Officer.

B. Provide a preconstruction survey locating all piles, batter piles, fender piles, guide piles, and corners of structures. Demolition to include the full removal of all structural members and appurtenances, including the full removal of piles.

1.4 ITEMS TO REMAIN IN PLACE

A. Take necessary precautions to avoid damage to existing items to remain in place or to be reused, including the existing jib crane. Repair or replace damaged items as approved by the

Contracting Officer. Coordinate the work of this section with all other work indicated.

Construct and maintain shoring, bracing, and supports as required. Ensure that structural

FOSU 318708 / 322870 02 41 00 –2

elements are not overloaded. Increase structural supports or add new supports as may be required as a result of any cutting, removal, deconstruction, or demolition work performed under this contract. Do not overload structural elements to remain. Provide new supports and reinforcement for existing construction weakened by demolition, deconstruction, or removal work. Repairs, reinforcement, or structural replacement require approval by the Contracting

Officer prior to performing such work.

B. Existing Construction Limits and Protection - Do not disturb existing construction beyond the extent indicated or necessary for installation of new construction. Provide temporary shoring and bracing for support of building components to prevent settlement or other movement.

Provide protective measures to control accumulation and migration of dust and dirt in all work areas. Remove snow, dust, dirt, and debris from work areas daily.

C. Utility Service - Maintain existing utilities indicated to stay in service and protect against damage during demolition and deconstruction operations.

D. Facilities - Protect electrical and mechanical services and utilities. Ensure that no elements determined to be unstable are left unsupported and place and secure bracing, shoring, or lateral supports as may be required as a result of any cutting, removal, deconstruction, or demolition work performed under this contract.

1.5 BURNING

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

1.6 QUALITY ASSURANCE

A. Comply with federal, state, and local hauling and disposal regulations. In addition to the requirements of the "Contract Clauses," conform to the safety requirements contained in

ASSE/SAFE A10.6. Comply with the Environmental Protection Agency requirements specified. Use of explosives will not be permitted.

B. Dust and Debris Control - Prevent the spread of dust and debris and avoid the creation of a nuisance or hazard in the surrounding area. Do not use water if it results in hazardous or objectionable conditions such as, but not limited to, ice, flooding, or pollution.

1.7 PROTECTION

A. Protection of Personnel - Before, during and after the demolition work take immediate action to protect all personnel working in and around the project site.

1.8 RELOCATIONS

A. Perform the removal and reinstallation of relocated items as indicated with workmen skilled in the trades involved. Repair or replace items to be relocated which are damaged by the

Contractor with new undamaged items as approved by the Contracting Officer.

FOSU 318708 / 322870 02 41 00 –3

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

3.1 EXISTING FACILITIES TO BE REMOVED

A. Utilities and Related Equipment

1. General Requirements - Do not interrupt existing utilities, except when authorized in writing by the Contracting Officer.

3.2 DISPOSAL OF REMOVED MATERIALS

A. Regulation of Removed Materials - Dispose of debris, rubbish, scrap, and other non-salvageable materials resulting from removal operations with all applicable federal, state and local regulations. Storage of removed materials on the project site is prohibited.

B. Burning on Property - Burning of materials removed from demolished and deconstructed structures will not be permitted.

C. Removal from Property - Transport waste materials removed from demolished and deconstructed structures, except waste soil, from property for legal disposal. Dispose of waste soil as directed.

END OF SECTION 02 41 00

FOSU 318708 / 322870 02 41 00 –4

INTENTIONALLY LEFT BLANK

FOSU 318708 / 322870 02 41 19 - 1

SELECTIVE DEMOLITION

SECTION 02 41 19 - SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Demolition and removal of selected portions of railing.

2. Demolition and removal of selected site elements, including utilities.

3. Salvage of existing items to be reused or recycled.

1.3 DEFINITIONS

A. Remove: Detach items from existing construction and dispose of them off-site unless indicated to be salvaged or reinstalled.

B. Remove and Salvage: Detach items from existing construction, in a manner to prevent damage, and deliver to Government.

C. Remove and Reinstall: Detach items from existing construction, in a manner to prevent damage, prepare for reuse, and reinstall where indicated.

D. Existing to Remain: Leave existing items that are not to be removed and that are not otherwise indicated to be salvaged or reinstalled.

E. Dismantle: To remove by disassembling or detaching an item from a surface, using gentle methods and equipment to prevent damage to the item and surfaces; disposing of items unless indicated to be salvaged or reinstalled.

1.4 MATERIALS OWNERSHIP

A. Unless otherwise indicated, demolition waste becomes property of Contractor.

B. Refer to 01 35 13.22 Archeological Protection and 01 35 91 Historic Preservation Treatment Procedures for items that may be uncovered during demolition.

1. Carefully salvage in a manner to prevent damage and promptly return to Government.

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1.5 PREINSTALLATION MEETINGS

A. Predemolition Conference: Conduct conference at Project site.

1. Inspect and discuss condition of construction to be selectively demolished.

2. Review structural load limitations of existing structures.

3. Review and finalize selective demolition schedule and verify availability of materials, demolition personnel, equipment, and facilities needed to make progress and avoid delays.

4. Review requirements of work performed by other trades that rely on substrates exposed by selective demolition operations.

5. Review areas where existing construction is to remain and requires protection.

1.6 INFORMATIONAL SUBMITTALS

A. Proposed Protection Measures: Submit report, including Drawings, that indicates the measures proposed for protecting individuals and property, for environmental protection, for dust control and, for noise control. Indicate proposed locations and construction of barriers.

B. Schedule of Selective Demolition Activities: Indicate the following:

1. Detailed sequence of selective demolition and removal work, with starting and ending dates for each activity. Ensure Government's on-site operations are uninterrupted.

2. Interruption of utility services. Indicate how long utility services will be interrupted.

3. Coordination for shutoff, capping, and continuation of utility services.

4. Use of elevator and stairs.

5. Coordination of Governments’ continuing occupancy of portions of existing building and of Government's partial occupancy of completed Work.

C. Predemolition Photographs or Video: Show existing conditions of adjoining construction, including finish surfaces, that might be misconstrued as damage caused by demolition operations. Comply with Section 01 32 33 "Photo Documentation." Submit before Work begins.

D. Warranties: Documentation indicating that existing warranties are still in effect after completion of selective demolition.

1.7 CLOSEOUT SUBMITTALS

A. Inventory: Submit a list of items that have been removed and salvaged.

1.8 FIELD CONDITIONS

A. Conduct selective demolition so Government's operations will not be disrupted.

1. Fort Sumter – Ferry tour operations will remain active during construction.

2. Fort Moultrie – Pierhead and construction areas will be closed to the public.

3. Liberty Square - Ferry tour operations will remain active during construction.

B. Notify Contracting Officer of discrepancies between existing conditions and Drawings before proceeding with selective demolition.

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C. Hazardous Materials: It is not expected that hazardous materials will be encountered in the Work.

1. If suspected hazardous materials are encountered, do not disturb; immediately notify

Contracting Officer and Government.

D. Utility Service: Maintain existing utilities indicated to remain in service and protect them against damage during selective demolition operations.

1.9 COORDINATION

A. Arrange selective demolition schedule so as not to interfere with Government's operations.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Regulatory Requirements: Comply with governing EPA notification regulations before beginning selective demolition. Comply with hauling and disposal regulations of authorities having jurisdiction.

B. Standards: Comply with ASSE A10.6 and NFPA 241.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that utilities have been disconnected and capped before starting selective demolition operations.

B. Review Project Record Documents of existing construction or other existing condition provided by Government. Government does not guarantee that existing conditions are same as those indicated in Project Record Documents.

C. Survey of Existing Conditions: Record existing conditions by use of preconstruction photographs or video and topographic and bathymetric surveys.

1. Comply with requirements specified in Section 01 32 33 "Photo Documentation."

2. Comply with requirements specified in Section 01 73 40 “Execution”.

3. Inventory and record the condition of items to be removed and salvaged. Provide photographs or video of conditions that might be misconstrued as damage caused by salvage operations.

4. Before selective demolition or removal of existing building elements that will be reproduced or duplicated in final Work, make permanent record of measurements, materials, and construction details required to make exact reproduction.

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3.2 UTILITY SERVICES AND MECHANICAL/ELECTRICAL SYSTEMS

A. Existing Services/Systems to Remain: Maintain services/systems indicated to remain and protect them against damage.

B. Existing Services/Systems to Be Removed, Relocated, or Abandoned: Locate, identify, disconnect, and seal or cap off utility services and mechanical/electrical systems serving areas to be selectively demolished.

1. Contractor shall arrange to shut off utilities with utility companies and the Government.

2. If services/systems are required to be removed, relocated, or abandoned, provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to other parts of building.

3. Disconnect, demolish, and remove plumbing systems, equipment, and components indicated on Drawings to be removed.

a. Piping to Be Removed: Remove portion of piping indicated to be removed and cap or plug remaining piping with same or compatible piping material.

b. Piping to Be Abandoned in Place: Drain piping and cap or plug piping with same or compatible piping material and leave in place.

c. Equipment to Be Removed: Disconnect and cap services and remove equipment.

d. Equipment to Be Removed and Reinstalled: Disconnect and cap services and remove, clean, and store equipment; when appropriate, reinstall, reconnect, and make equipment operational.

e. Equipment to Be Removed and Salvaged: Disconnect and cap services and remove equipment and deliver to Government.

3.3 PROTECTION

A. Temporary Protection: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.

1. Provide protection to ensure safe passage of people around selective demolition area and to and from occupied portions of building.

2. Provide temporary weather protection, during interval between selective demolition of existing construction on exterior surfaces and new construction, to prevent water leakage and damage to structure and interior areas.

3. Comply with requirements for temporary enclosures, dust control, heating, and cooling specified in Section 01 50 00 "Temporary Facilities and Controls."

B. Temporary Shoring: Design, provide, and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction and finishes to remain, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.

1. Strengthen or add new supports when required during progress of selective demolition.

C. Remove temporary barricades and protections where hazards no longer exist.

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3.4 TOPSOIL STRIPPING

A. Topsoil refers to the uppermost soil horizon, usually darker in color, in which the majority of roots grow.

B. Strip topsoil to whatever depths are encountered or 2-6 inches or where there is no darker layer.

1. Topsoil will be removed and returned to the same area.

2. Remove subsoil and non-soil materials from topsoil, including trash, debris, weeds, roots and other waste materials.

C. Stockpile topsoil materials away from edge of excavations without intermixing with subsoil.

Grade and shape stockpiles to drain surface water. Cover to prevent windblown dust.

1. Care will be taken to assure that topsoil and fill material are not mixed and are stockpiled in separate areas (i.e., topsoil to the right of the trench and fill to the left).

2. Limit height of topsoil stockpiles to 36 inches (900 mm) unless authorized by

Contracting Officer.

3. Do not stockpile topsoil within drip line of remaining trees.

4. Dispose of excess topsoil as specified for waste material disposal.

5. Stockpile surplus topsoil to allow for re-spreading a thicker layer of topsoil.

D. Topsoil Handling: Sections will be rehabilitated as soon as possible. Topsoil may not be stockpiled over the winter or for longer than (6) months in grass and tree dominated zones.

Any deviation must be approved by the Contracting Officer.

1. Topsoil may not be used as bedding material. Separate bedding material must be obtained from sources approved by the Contracting Officer.

2. All topsoil that is to be reused on-site is to be stockpiled on-site with erosion control surrounding the pile in the location established at the pre-demolition meeting.

3.5 SELECTIVE DEMOLITION, GENERAL

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. Proceed with selective demolition systematically.

2. Neatly cut openings and holes plumb, square, and true to dimensions required. Use cutting methods least likely to damage construction to remain or adjoining construction.

Use hand tools or small power tools designed for sawing or grinding, not hammering and chopping. Temporarily cover openings to remain.

3. Cut or drill from the exposed or finished side into concealed surfaces to avoid marring existing finished surfaces.

4. Do not use cutting torches until work area is cleared of flammable materials. At concealed spaces, such as duct and pipe interiors, verify condition and contents of hidden space before starting flame-cutting operations. Maintain portable fire-suppression devices during flame-cutting operations.

5. Maintain fire watch during flame-cutting operation and for a period of time after to ensure there are no threats of fire.

6. Maintain adequate ventilation when using cutting torches.

7. Remove decayed, vermin-infested, or otherwise dangerous or unsuitable materials and promptly dispose of off-site.

FOSU 318708 / 322870 02 41 19 - 6

8. Remove structural framing members and lower to ground by method suitable to avoid free fall and to prevent ground impact or dust generation.

9. Locate selective demolition equipment and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing.

10. Dispose of demolished items and materials promptly. Comply with requirements in Section 01 74 19 "Construction Waste Management and Disposal."

B. Site Access and Temporary Controls: Conduct selective demolition and debris-removal operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.

C. Work in Historic Areas: Selective demolition may be performed only in areas of Project that are not designated as historic. In historic spaces, areas, and rooms, or on historic surfaces, the terms "demolish" or "remove" shall mean historic "removal" or "dismantling" as specified in Section 024296 "Historic Removal and Dismantling."

D. Removed and Salvaged Items:

1. Clean salvaged items.

2. Pack or crate items after cleaning. Identify contents of containers.

3. Store items in a secure area until delivery to Government.

4. Transport items to Government's storage area designated by Government.

5. Protect items from damage during transport and storage.

E. Removed and Reinstalled Items:

1. Clean and repair items to functional condition adequate for intended reuse.

2. Pack or crate items after cleaning and repairing. Identify contents of containers.

3. Protect items from damage during transport and storage.

4. Reinstall items in locations indicated. Comply with installation requirements for new materials and equipment. Provide connections, supports, and miscellaneous materials necessary to make item functional for use indicated.

F. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by Contracting Officer, items may be removed to a suitable, protected storage location during selective demolition and reinstalled in their original locations after selective demolition operations are complete.

3.6 DISPOSAL OF DEMOLISHED MATERIALS

A. Remove demolition waste materials from Project site and recycle or dispose of them according to Section 01 74 19 "Construction Waste Management and Disposal."

1. Do not allow demolished materials to accumulate on-site.

2. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

3. Remove debris from elevated portions of building by chute, hoist, or other device that will convey debris to grade level in a controlled descent.

4. Comply with requirements specified in Section 01 74 19 "Construction Waste

Management and Disposal."

FOSU 318708 / 322870 02 41 19 - 7

B. Burning: Do not burn demolished materials.

3.7 CLEANING

A. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

END OF SECTION 024119

FOSU 318708 / 322870 02 41 20 - 1

SILTATION CURTAINS/DEBRIS BOOMS

SECTION 02 41 20 - SILTATION CURTAINS/DEBRIS BOOMS

PART 1 GENERAL

1.1 DESCRIPTION

A. Provide all labor, materials, equipment and supervision necessary to complete the work specified in this Section.

1.2 SCOPE OF WORK

A. The scope of the work, without limiting the generality thereof, consists of furnishing all labor, materials and equipment for the following items of work and all work incidental thereto as shown on the Drawings and as herein specified. Siltation curtain and debris boom installation and use shall conform to the requirements stated in permits, licenses, and by environmental agencies have jurisdiction/authority over the work.

1. Furnishing and Installation of floating siltation curtain to prevent the dispersion of sediments disturbed by demolition and construction activities.

2. Furnishing and Installation of floating debris boom to prevent the dispersion of construction materials from demolition and construction activities.

1.3 SUBMITTALS

A. Submit manufacturer's description, design (including calculations) and specifications of siltation curtain material.

B. Submit manufacturer's description, design (including calculations) and specifications of debris boom material.

PART 2 MATERIALS

2.1 SILTATION CURTAIN AND DEBRIS BOOM

A. Siltation curtain and debris boom shall be comprised of nonporous material and have sufficient tensile and puncture strength to perform continuously during the construction period.

PART 3 EXECUTION

3.1 ASSEMBLY

A. Siltation Curtain

1. The siltation curtain shall be continuously attached to the float over its entire length.

FOSU 318708 / 322870 02 41 20 - 2

SILTATION CURTAINS/DEBRIS BOOMS

2. The siltation curtain shall extend from the waterline, through the water column, and terminate at the mudline for all tide cycles. The bottom shall be weighted to ensure that it remains on the mudline at all times, taking into account waves, current, and tide cycle.

3. The siltation curtain shall be secured such that it prevents the dispersion of sediments disturbed by demolition and construction activities without being a hazard to navigation.

B. Debris Boom

1. The debris boom skirt shall be continuously attached to the float over its entire length.

2. The debris boom shall extend a minimum of 2 feet below the waterline. The bottom shall be sufficiently weighted to ensure stability, taking into account waves, current, and tidal cycle.

3. The debris boom shall be secured such that it prevents the dispersion of construction materials from demolition and construction activities without being a hazard to navigation.

3.2 MAINTENANCE

A. The contractor shall be responsible for continuous maintenance of both the siltation curtains and debris booms to ensure performance.

B. Construction materials retained by both the siltation curtain and debris boom shall be removed and disposed of daily.

C. The siltation curtain and debris booms shall be removed at the end of the construction period and remain the property of the Contractor.

End of Section 02 41 20

FOSU 318708 / 322870 03 30 00 - 1

CAST-IN-PLACE CONCRETE

SECTION 03 30 00 - CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.01 SCOPE OF WORK

A. Perform all work in accordance with ACI 318. Provide cast-in-place concrete for the construction of the pier top deck, curbs, ramps, and pile caps.

B. Provide all labor, materials, equipment and supervision necessary to complete work specified in this section including, but is not necessarily limited to, furnishing and installing the following:

1. Concrete pile caps, pier deck top, curbs, ramps, and all associated reinforcing steel.

1.02 REFERENCES

A. Except as noted, work must conform to the latest edition of the following codes, specifications, and standards:

1. American Society for Testing and Materials (ASTM)

2. American Concrete Institute (ACI):

a. "Building Code Requirements for Reinforced Concrete", ACI 318.

b. "Specifications for Structural Concrete for Buildings", ACI 301.

c. "Recommended Practice for Measuring, Mixing, and Placing Concrete", ACI 304.

d. "Recommended Practice for Cold (Hot) Weather Concreting", ACI 306 and ACI 307.

e. "Recommended Practice for Concrete Formwork", ACI 307.

3. Concrete Reinforcing Steel Institute (CRSI):

a. Reinforced Concrete - "A Manual of Standard Practice".

b. "Recommended Practice for Placing Reinforcing Bars".

c. "Recommended Practice for Placing Reinforcing Bars".

d. "Guidelines for Inspection and Acceptance of Epoxy-Coated Reinforcing Bars at the Job

Site."

FOSU 318708 / 322870 03 30 00 - 2

1.03 SUBMITTALS

A. Shop Drawings

1. Reinforcing steel shop drawings:

a. Shall be of such detail and completeness that all fabrication and placement at the site can be accomplished without the use of contract drawings for reference.

b. Shall include number of pieces, sizes, and grade of reinforcing steel, accessories, and any other information required for fabrication and placement.

c. Shall show joint layout and design.

2. Contractor shall check structural, and site drawings for anchor bolts, anchors, inserts, conduits, sleeves, and any other items which are required to be embedded in concrete, and shall make necessary provisions as required so that reinforcing steel will not interfere with the placement of such embedded items.

B. Concrete mix designs.

C. Grout manufacturer and catalog data, if required.

D. Name and address of Testing Laboratory for approval by Contracting Officer.

1.04 QUALITY ASSURANCE

A. Testing of Concrete

1. Test Specimens: The Contractor will be required to make, cure and have tested, a minimum of one set of four test specimens from the concrete of each day's pour and for each fifty cubic yards of concrete cast in accordance with ASTM Designations C172, C31 and C39. One cylinder shall be broken after seven days and three cylinders after twenty-eight day.

2. Slump: A slump test shall be made for each truckload of concrete in accordance with ASTM

Designation C143. Slumps greater than design mix limit will be grounds for rejection of the concrete.

3. Air Content: The Contractor shall make an air content test from each day's pour of concrete by the pressure method in accordance with ASTM Designation C231. Air contents above or below the limits specified will be grounds for rejection of the concrete.

4. Testing: All personnel and laboratories testing concrete shall be licensed by the State of South

Carolina.

5. In the event the compressive strength of the cylinders, when tested, is below the specified minimum, the Contracting Officer may require test cores of the hardened structure to be taken by the Testing Laboratory in accordance with ASTM C-42. If such test indicates that the core specimen is below the required strength, the concrete in question shall be removed and replaced without cost to the Contracting Officer. Any other work damaged as a result of this

FOSU 318708 / 322870 03 30 00 - 3

concrete removal shall be replaced with new materials to the satisfaction of the Contracting

Officer at no additional cost to the Contracting Officer. The cost of coring will be deducted from the contract amount. Where core cylinders have been taken by the Testing Laboratory and the concrete proves to be satisfactory, core holes shall be filled in a manner satisfactory to the Contracting Officer at no additional cost to the Contracting Officer.

B. The Contractor shall coordinate the date and location of tests with the Contracting Officer before any concrete work is started.

1.05 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Reinforcing steel shall be transported to the site, stored, and covered in a manner which will ensure that no damage shall occur to it from moisture, dirt, grease, or any other cause that might impair bond to concrete or chip protective epoxy coating. A sufficient supply of approved reinforcing steel shall be stored on the site at all times to ensure that there will be no delay of the work. Identification of steel shall be maintained after bundles are broken.

PART 2 - PRODUCTS

2.01 MATERIALS

A. Portland Cement: ASTM C 150, Type II of U.S. manufacture. Only one brand of cement shall be used on the project.

B. Aggregates:

1. Fine aggregate: ASTM C 33, clean and graded from 1/4 inch to fines.

2. Coarse aggregate: ASTM C 33, clean and graded from 1/4 inch to maximum sizes hereinafter specified.

C. Air Entraining Agent

Conforming to ASTM C 260 for Air-Entraining Admixtures for Concrete.

D. Water Reducing Agent

Conforming to ASTM C 494 Type A for Chemical Admixtures for Concrete.

E. Water

Clean and potable, free of impurities detrimental to concrete.

F. Reinforcing Bars

New, deformed billet steel bars, conforming to ASTM A 615, Grade 60, with Epoxy-Coating conforming to ASTM A775/A775M.

FOSU 318708 / 322870 03 30 00 - 4

G. Accessories

Reinforcement accessories, consisting of spacers, chairs, ties, and similar items shall be provided as required for spacing, assembling, and supporting reinforcement in place. All accessories shall be dielectric coated steel or approved plastic accessories, conforming to the applicable requirements of the CRSI Standards hereinbefore specified.

H. Tie wire for reinforcement shall be 16 gauge or heavier dielectric coated steel or approved plastic accessories, conforming to the applicable requirements of ASTM A-82.

I. Form Ties and Spreaders

Standard metal form clamp assemble and plastic cone, of type acting as spreaders and leaving no metal within 1 inch of concrete face. Inner tie rod shall be left in concrete when forms are removed.

No wire ties or wood spreaders will be permitted. Use 1/2" x 1" C.T. plastic cones for sinkages.

J. Form Coatings

Non-grain raising and non-staining type that will not leave residual matter on surface of concrete or adversely affect proper bonding of subsequent application of other material applied to concrete surface. Coating containing mineral oils or non-drying ingredients are not be permitted.

K. Grout (if required)

A high strength non-shrink grout with salt water resistance.

2.02 CONCRETE STRENGTHS AND PROPORTIONS

A. Cast-in-place concrete shall have the following minimum compressive strength at 28 days and shall be proportioned within the following limits:

Minimum Maximum

Strength at Size of W/C

Class 28 days Aggregate Ratio

Concrete for Pier 5000 psi 3/4" .40

B. The exact proportions for the mix, including amounts admixture (if any), and water, shall be determined by the concrete supplier.

C. The proportions of aggregate to cement for any concrete shall be such as to produce a mixture which will work readily into the corners and angles of the forms and around reinforcement, but without permitting the materials to segregate or excess free water to collect on the surface.

D. Air-Entrainment

The air content in all concrete shall be maintained at 6 to 8 percent.

FOSU 318708 / 322870 03 30 00 - 5

PART 3 - EXECUTION

3.01 CAST-IN-PLACE CONCRETE

A. Falsework for Forms

1. The contractor shall build and maintain necessary falsework for the forms.

B. Construction of Forms

1. General

a. Wood forms shall be constructed of sound material, shall be of the correct shape and dimensions, mortar tight, of sufficient strength, and so braced and tied together that the movement of men, equipment, materials, or placing and vibrating the concrete will not throw them out of line or position.

2. Embedded Items

a. Provisions shall be made for pipes, sleeves, anchors, inserts, reglets, anchor slots, nailers, waterstops, and other features. No wood other than necessary nailing blocks shall be embedded in concrete. Complete cooperation shall be extended suppliers of embedded items in their installation. Secure information for embedded items from other trades as required. All embedded items shall be securely anchored in correct location and alignment prior to placing concrete.

3. Openings for Items Passing Through Concrete

a. Contractor shall establish exact locations, sizes, and other conditions required for openings and attachment of work specified under other sections. Contractor shall be held responsible for proper coordination of all work of this nature in order that therewill be no unnecessary cutting and patching of concrete. Any cutting and repairing to concrete required as a result of failure to provide for such openings shall be paid for by the

Contractor at no additional expense to the Contracting Officer.

C. Removing Forms and Falsework

1. Wood forms shall not be removed for at least 72 hours after concrete has been placed.

2. Forms shall not be removed until the concrete has attained sufficient strength to insure stability.

D. Reinforcing Steel

1. General: Reinforcing steel shall be placed in accordance with the drawings and approved shop drawings and the applicable requirements of the "Codes and Standards" here-in-before specified. Install reinforcement accurately and secure against movement, particularly under the weight of workmen and the placement of concrete.

2. Reinforcing Steel Supports: Bars shall be supported on approved plastic or dielectric-coated

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metal chairs or spacers, accurately placed and securely fastened to forms or steel reinforcement in place. Additional bars shall be supplied, whether specifically shown on the drawings or not, where necessary to securely fasten reinforcement in place. Support legs of accessories in forms without embedding in form surface. Spacing of chairs and accessories shall conform to CRSI's "Recommended Practice for Placing Bar Support". Hooping and stirrups shall be accurately spaced and wired to the reinforcement. No wood will be permitted inside forms. Lifting of welded wire fabric into proper position while concrete is being poured rather than supporting fabric on chairs will not be permitted.

3. Placing and Tying: All reinforcement shall be set in place, spaced, and rigidly and securely tied or wired with tie wire at all splices and at all crossing points and intersections in the positions shown, or as directed. Rebending of bars on the job to accommodate the job to accommodate existing conditions will not be permitted without the written approval of the

Contracting Officer. Point ends of wire ties away from forms.

4. Spacing: Minimum center to center distance between parallel bars shall be in accordance with the details on the drawings, or, where not shown, the clear spacing shall be 2 times the bar diameter but in no case less than 1-1/2 inches or less than 1-1/2 times the maximum size aggregate.

5. Rebar lap splices shall be in accordance with the following:

a. Maximum 50% of rebar spliced occurring within lap length.

b. Top bars where more than 12” of fresh concrete is cast below the bar being developed shall be 1.3 times values given in 3.D.5.c.

c. Lap Splice lengths

#4 bars 16 inches

#5 bars 20 inches

#6 bars 24 inches

#7 bars 35 inches

#8 bars 40 inches

#9 bars 51 inches

6. Protective Concrete covering: Except where shown otherwise on drawings, the minimum concrete coverage for steel reinforcement shall conform with the applicable revisions of the

"Codes and Standards" here-in-before specified.

E. Mixing of Concrete

1. All concrete shall be ready-mixed concrete shall be mixed and delivered in accordance with the "Specification for Ready-Mixed Concrete", ASTM C-94. The batch plant of the concrete producer shall be certified for compliance with the standards established by the National

Ready-Mixed Concrete Association.

2. In the event concrete is mixed at a central batching plant, the delivery shall be arranged so that intervals between batches are kept to a minimum, and in any event not more than thirty (30) minutes. Trucks shall be in first class condition and kept in constant rotation during delivery.

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3. Concrete shall be placed within 90 minutes after cement has been mixed with aggregate or 45 minutes after addition of water and admixtures.

4. No admixtures, except those mentioned in paragraph 2.1 shall be used. Calcium chloride will not be permitted.

5. Truck delivery slips of all concrete delivered to the job shall indicate the quantity and quality of concrete, additives, date and time of batching and delivery, and the location of placement.

Delivery slips shall be forwarded to the Contracting Officer at the end of each week.

F. Cold Weather Requirements:

1. Concrete shall not be mixed or placed when the temperature is below 40 degrees F., or when conditions indicate that the temperature will fall below 40 degrees F. within 72 hours unless precautions are taken to protect the concrete.

2. Concrete temperature shall be maintained, when deposited, at not less than 60 degrees F.

Reinforcement, forms, and ground which concrete will contact must be completely free of frost.

3. Concrete and formwork must be kept at a temperature of not less than 50 degrees F. for not less than 96 hours after placing.

4. Calcium chloride shall not be used.

G. Hot Weather Requirements:

1. The maximum temperature of the concrete, when deposited, shall be 85 degrees F. If the weather causes the placing temperature to exceed 85 degrees F., the mix shall be cooled by appropriate methods if approved by the Contracting Officer.

2. No concrete shall be deposited when the air temperature is greater than 90 degrees F.

H. Conveying and Placing Concrete

1. Notification

a. Before placing concrete, forms shall be thoroughly inspected. All chips, dirt, etc., shall be removed, all temporary bracing and cleats taken out, all openings for pipes, etc., properly boxed, all forms properly secured in their correct position and made tight, all reinforcement, anchors, and embedded items secured in their proper places.

Concrete which may be on the forms or reinforcement, and which is set and dry, shall be cleaned off, and the forms and steel washed off before proceeding. Remove all foreign matter from forms and excavations.

2. Water shall be removed from place of deposit before concrete is placed unless otherwise per-mitted by the Contracting Officer. Any flow of water into an excavation shall be diverted through proper side drains into a sump or shall be removed by other approved methods which will avoid washing away the freshly deposited concrete.

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3. Anchors and Embedded Items

a. Anchors, bolts, sleeves, inserts, wood blocking, and any other items to be embedded in concrete shall be accurately secured in position before the concrete is placed.

Aluminum shall not be embedded in concrete.

4. Handling and Depositing

a. Before any concrete is placed, the Contractor shall notify all whose work is in any way connected with or influenced by the concrete work and give them reasonable time to complete all portions of their work that must be completed before concrete is deposited.

b. Immediately before concrete is placed, the Contractor shall inspect all forms. Be sure that they are in proper position, sufficiently rigid, thoroughly clean, properly oiled and free from foreign materials, and that all reinforcement is in proper position.

c. Concreting, once started, shall be carried on as a continuous operation until the section of approved size and shape is completed.

d. Concrete shall be conveyed as rapidly as practicable from the mixer to the place of final deposit by methods which prevent the separation or loss of ingredients. It shall be deposited, as nearly as practicable, in its final position to avoid rehandling or flowing.

e. Concrete shall not be dropped freely where reinforcement will cause segregation, nor shall it be dropped freely more than six(6) feet. Concrete shall be deposited to maintain a plastic surface approximately horizontal.

f. Concrete that has partially hardened shall not be deposited in the work.

5. Pumping

a. Concrete may be placed by pumping if first approved in writing by the Contracting

Officer for the location proposed.

b. Equipment for pumping shall be of such size and design as to ensure a practically continuous flow of concrete at the delivery end without separation of materials.

c. The concrete mix shall be designed to the same requirements as herein before specified and may be richer in lubricating components in order to allow proper pumping.

d. Concrete shall not be pumped through aluminum pipes.

e. All pumping operations must have full-time inspection by a recognized testing laboratory approved by the Contracting Officer and paid for by the Contractor. The cost of this full-time inspection shall be included in the contractor's bid proposal if the option of pumping is elected.

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6. Vibrating and Compacting

a. All concrete shall be thoroughly consolidated and compacted by suitable means during the operation of placing, and shall be thoroughly worked around reinforcement, embedded items, and into the corners of the forms. All concrete against forms shall be thoroughly spaded. Internal vibrators shall be used under experienced supervision and shall be kept out of contact with reinforcement and wood forms. Vibrators shall not be used in a manner that forces mortar between individual form members.

b. Vibrators shall be flexible electric type or approved compressed air type, adequately powered and capable of transmitting to the concrete not less than seven thousand

(7,000) impulses per minute. Vibration shall be sufficiently intense to cause the concrete to flow or settle readily into place without separation of the ingredients. A sufficient number of vibrators shall be employed so that complete compaction is secured throughout the entire volume of each layer of concrete. At least one (1) vibrator shall be kept in readiness as a spare for emergency use. Vibrators shall be such that the concrete becomes uniformly plastic with their use.

c. Vibration shall be close to the forms but shall not be continued at one spot to the extent that large areas of grout are formed or the heavier aggregates are caused to settle. Care shall be taken to not disturb concrete which has its initial set.

d. Where conditions make compacting difficult, or where the reinforcement is congested, batches of mortar containing the same proportions of cement to sand as used in the concrete shall first be deposited in the forms, to a depth of at least on inch.

e. The responsibility for providing fully filled out, smooth, clean, and properly aligned surfaces free from objectionable pockets shall rest entirely with the Contractor.

I. Construction Joints

Construction joints shall be located as shown on the contract plans. If for any reason a change is necessary, the Contractor shall prepare a placing plan for any construction joints and submit it to the

Contracting Officer for approval. Where a joint is to be made, the surface of the concrete shall be sandblasted or thoroughly picked, thoroughly cleaned, and all laitance removed. In addition to the foregoing, joints shall be thoroughly wetted, but not saturated, and slushed with a coat of grout immediately before the placing of new concrete. Approved keys shall be used at all joints, unless detailed otherwise. Forms shall be retightened before placing of concrete is continued. There shall be an interval of at least 48 hours between adjacent pours.

J. Expansion and Contraction Joints

Expansion joints as indicated on the contract drawings. Contraction joints as indicated on the contract drawings.

K. Patching

Immediately after stripping forms, patch minor defects, form-tie holes, honeycombed areas, etc., before concrete is thoroughly dry. Repair gravel pockets by cutting out to solid surface, form key, FOSU 318708 / 322870 03 30 00 - 10 and thoroughly wet before placing patching mortar consisting of 1 part cement to 2 parts fine sand;

compact into place and neatly finish. Honeycombed areas or gravel pockets which, in the

Contracting Officer's opinion are too large and unsatisfactory for mortar patching as described above, shall be cut out to solid surface, keyed, and packed solids with matching concrete to produce firm bond and surface.

1. The Contractor shall do all the cutting as required by himself or other trades. All such work shall be of the minimum size required. No excessive cutting will be permitted, nor shall any structural members or reinforcement be cut.

2. The Contractor shall do all patching after work by other trades has been installed, where required, using Portland Cement Mortar 1:2 mix.

L. Protection and Curing

1. Protect concrete from injurious action of the elements and defacement of any nature during construction operations.

2. Keep concrete in a thoroughly moist condition from the time it is placed until it has cured, for at least three (3) days.

3. Carefully protect exposed concrete corners from damage.

4. Allow no slabs to become dry at any time until curing operations are complete. In general, slabs shall be cured with non-staining curing paper, hosing or fog spray; vertical surfaces shall be curing with burlene or fog spray or an approved curing compound. Protect fresh concrete from drying winds, rain, damage, or spoiling. Curing paper shall be lapped 4 inches minimum at joints and sealed with waterproof tape.

M. Concrete Finishes

1. Unexposed Surfaces

a. All unexposed surfaces shall have any form finish, at the Contractor's option.

2. Wearing Surface Finish

a. Float the surface by hand using a wooden or magnesium float. Finish with a flexible bristle broom. Permit surface to harden sufficiently to retain the scoring or ridges. Broom transverse to traffic or parallel to the slope of the slab.

3. Addition of Material

a. The addition of cement, sand, water, or mortar to slab surfaces while finishing concrete is strictly prohibited.

N. Defective Work

1. The following concrete work shall be considered defective and may be ordered by the

Contracting Officer to be removed and replaced at Contractor's expense:

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a. Incorrectly formed.

b. Not plumb or level.

c. Not specified strength.

d. Containing rock pockets, voids, honeycomb, or cold joints.

e. Containing wood or foreign matter.

f. Otherwise not in accordance with the intent of the Drawings and Specifications.

END OF SECTION 03 30 00

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FOSU 318708 / 322870 03 30 10 - 1

CONCRETE REHABILITATION

SECTION 03 30 10 - CONCRETE REHABILITATION

A. Provide all labor, materials, equipment and supervision necessary to complete the work specified in this section.

B. Scope of work under this section includes but is not limited to:

1. Placement of concrete on the portions of the existing shoreline platform as indicated on the drawings and as specified herein.

2. Chipping of existing deteriorated concrete to sound concrete.

3. Cleaning and replacing steel reinforcement as specified herein.

1.2 QUALITY ASSURANCE

A. American Society for Testing and Materials (ASTM)

B. American Concrete Institute (ACI), Standard "Recommended Practice for Shotcreting", ACI-

506.

C. American Concrete Institute (ACI), Concrete Repair Manual.

D. American Concrete Institute (ACI), “Placing Concrete by Pumping Methods”, ACI304.2R.

E. American Concrete Institute (ACI), “Guide to Shotcrete”, ACI506.2.

F. Manufacturer's printed recommendations.

A. Submit catalog cuts means and methods for cleaning and repairing damaged concrete.

B. Submit catalog data on all admixtures, coatings, and curing compounds.

C. Submit concrete repair and injection grout pumping plans.

D. Submit concrete mix and admixture data.

E. Submit manufacturer’s data on reinforcing…