Specs.pdf

George Washington Memorial Parkway

TABLE OF CONTENTS

Historic Stone Masonry Wall Repair Page 1 of 1

TABLE OF CONTENTS

Division 1 - GENERAL REQUIREMENTS

01 11 00 Summary of Work 01 33 00 Submittals 01 50 00 Temporary Services, Facilities, Controls and Scaffolding 01 70 00 Project Closeout

Division 3 – CONCRETE

03 30 00 Concrete

DIVISION 4 - MASONRY

04 40 02 Stone Wall Repair And Cleaning

Attachment

Attachment 1 http://www.nps.gov/tps/standards/four-treatments Attachment 2 Character of George Washington Memorial Parkway Guidewalls/Guardwalls

END

SUMMARY OF WORK 01 11 00

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SECTION 01 11 00 – SUMMARY OF WORK

PART 1 GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, and other Division 01 Specification Sections, apply to this Section.

1.2 DESCRIPTION: This section covers the following:

A. Location and Description of Work B. Coordination C. Project Meetings D. Construction Facilities and Temporary Controls E. Materials and Equipment F. Quality Requirements G. Accident Prevention H. Archeological Protection

1.3 LOCATION AND DESCRIPTION OF WORK

A. The work of this contract is located at George Washington Memorial Parkway, Virginia and Clara Barton Parkway, Maryland.

1. Clara Barton Parkway: 4 locations

2. Northbound George Washington Memorial Parkway: 3 locations

3. Southbound George Washington Memorial Parkway: 1 locations

4. Pimmit Run Bridge(Median): 1 location

B. All means and methods must comply with the Secretary of lnterior's Standards for Treatment of Historic Properties, which can be viewed at the following website:

http://www.nps.gov/tps/standards/four-treatments (See attachment 1).

C. Follow the repair/replacement directions based on the attachment 2.

D. The work of this contract includes, but not limited to the following work, as detailed in the specification sections and as shown on the attached drawings:

1. Repair and replace-in-kind numerous and varied existing historic stone wall.

2. Repair existing concrete wall.

3. Recover missing stones from behind walls and over embankments where practical.

4. Use government furnished stone from storage area at Daingerfield Island storage area. COR will provide location of stone.

5. Remove all loose stones and mortar to provide a clean mortar bed.

6. The mortar mix for the repair needs to be developed to match the existing historic masonry in color and texture.

7. Remove debris, waste stone, waste mortar, mortar bags and trash.

8. Provide lane closure (one lane only), follow directions on Manual on Uniform

Traffic Control Devices (MUTCD) 2009 Edition Chapter 6 Temporary Traffic Control.

9. All work shall be directly supervised by a qualified stonemason.

1.4 COORDINATION

A. Coordinate construction operations included in various sections of these specifications to assure efficient and orderly installation of each part of the work.

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Coordinate construction operations included under different sections that depend on each other for proper installation, connection, and operation.

1. Schedule construction operations in the sequence required to obtain the best results where installation of one part of the work depends on installation of other components, before or after its own installation.

B. Administrative Procedures: Coordinate scheduling and timing of required administrative procedures with other construction activities to avoid conflicts and assure orderly progress of the work. Such administrative activities include, but are not limited to, the following:

1. Preparation of contractor’s construction schedule.

2. Installation and removal of temporary facilities.

3. Progress meetings.

4. Project closeout activities.

1.5 PROJECT MEETINGS

A. General: Contracting Officer’s Representative (COR) will schedule and conduct meetings and conferences at project site, unless otherwise indicated.

1. Attendees: Authorized representatives of Acquisition Division and park staff;

Contractor and its superintendent; major subcontractors and other concerned parties shall attend the conference shall be familiar with project and authorized to conclude matters relating to work.

B. Pre-Construction Conference: Contracting Officer’s Representative will schedule a

Pre-Construction Conference before starting construction, at a time convenient to park staff and contractor. The conference will be held at project site or another convenient location.

1. Agenda: Subjects to be discussed will include the following:

a. Correspondence – General Procedure.

b. Contracting Officer’s Authorized Representatives.

c. Changes.

d. Submittals for Approval (General).

e. Submittals for Approval (Shop Drawings and Samples).

f. Subcontractors.

g. Labor Standards.

h. Payroll Reports.

i. Working Hours

j. Plans and Specifications.

k. Accident Prevention.

l. Park Rules and Regulations.

m. Contractor Parking and Personnel Passes

n. Payments to Contractor.

o. Liquidated Damages – Construction.

p. Tentative Construction Schedule.

C. Pre-Installation Conferences: If required, conduct a pre-installation conference at project site before each construction activity that requires coordination with other construction.

D. Progress Meetings: If necessary, the Contracting Officer’s Representative will schedule and conduct progress meetings at designated intervals. Coordinate

Historic Stone Masonry Wall Repair Page 3 of 4 dates of meetings with preparation of payment requests.

1.6 CONSTRUCTION FACILITIES AND TEMPORARY CONTROLS (See Section 01 50 00)

A. References:

1. FAR Clause: 52.236-9 – Protection of Existing Vegetation, Structures, Equipment, Utilities, and Improvements

2. FAR Clause: 52.236-10 – Operations and Storage Areas

3. FAR Clause: 52.236-14 – Availability and Use of Utility Services

1.7 MATERIALS AND EQUIPMENT

A. Reference: FAR Clause: 52.236-5 – Material and Workmanship

1.8 QUALITY REQUIREMENTS

A. Testing and inspecting services may be required to verify compliance with requirements specified or indicated. These services do not relieve the Contractor of responsibility for compliance with the Contract requirements.

1. Specific quality-control requirements for individual construction activities as specified in the Sections may also cover production of standard products.

2. Requirements for Contractor to provide quality-control services as directed by

Contracting Officer’s Representative or authorities having jurisdictions are not limited by provisions of this Section.

B. Submittals

1. Delegated-Design Submittal: In addition to Shop Drawings, Product Data, and other required submittals, submit a statement, signed and sealed by the responsible design professional, for each product and system specifically assigned to Contractor to be designed or certified by a design professional, confirming that the products and systems are in compliance with performance and design criteria indicated. Include list of codes, loads, and other factors used in performing these services.

2. Reports: Prepare and submit certified written reports that include the following:

a. Date of issue.

b. Project title and number. Contract number.

c. Name, address, and telephone number of testing agency.

d. Dates and locations of samples and tests or inspections.

e. Names of individuals making tests or inspections.

f. Description of the Work and test and inspection method.

g. Identification of product and Specification Section.

h. Complete test or inspection data.

i. Test and inspection results and an interpretation of test results.

j. Ambient conditions at time of sample taking and testing and inspecting.

k. Comments or professional opinion on whether tested or inspected

Work complies with the Contract Document requirements.

l. Name and signature of laboratory inspector.

m. Recommendations on testing reinspecting.

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3. Permits, licenses, and Certificates: For Contracting Officer’s Representative’s records submit copies of permits, licenses, certifications, inspection reports, releases, jurisdictional settlements, notices, receipts for fee payments, judgments, correspondence, records, and similar documents, established for compliance with standards and regulations bearing on performance of the Work.

C. Quality Assurance

1. Installer Qualifications: A firm or individual experienced in installing, erecting, or assembling work similar in material, design, and extent to that indicated for this Project, whose work has resulted in construction with a record of successful in-service performance.

D. Quality Control

1. Contractor Responsibilities: Unless otherwise indicated, provide quality-control services specified and required by these contract documents.

a. Contractor shall engage a qualified-independent testing agency to perform these quality-control services.

2. Coordination: Coordinate sequence of activities to accommodate required quality-assurance and quality-control services with a minimum of delay and to avoid necessity of removing and replacing construction of accommodate testing and inspecting.

1.9 ACCIDENT PREVENTION

A. Reference: FAR Clause: 52.236-13 Alt. I – Accident Prevention

1.10 ARCHEOLOGICAL PROTECTION

A. Reference: DOI Clause: 1489.236-73 – Archeological Findings

1. Archeological Discovery: In the event that unanticipated archeological resources are uncovered during construction operations, the contractor will suspend operations at the discovery site, notify the Contracting Officer, who shall contact the Regional Archeologist or his representative, and continue operations in other areas, until such time as the National Park Service has completed its compliance responsibilities under Section 106 of the 1966 National Historic Preservation Act, as amended.

2. Anthropic Discovery: Should any human remains be encountered, excavations will stop and the Contracting Officer will be notified immediately. The Contracting Officer, in consultation with the Regional Archeologist or his representative, and the Park Superintendent shall determine the appropriate course of action, following the Department of the Interior’s guidelines on the treatment of human remains and appropriate Federal legislation.

PART 2 PRODUCTS (Not Applicable) PART 3 EXECUTION (Not Applicable)

END OF SECTION

SUBMUTTALS 01 33 00

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SECTION 01 33 00 - SUBMITTALS

A. Drawings and general provisions of the Contract, and other Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes administrative and procedural requirements for submittals required for performance of the Work, including the following:

1. Staff Names

2. Contractor's Construction Schedule

3. Quality Assurance Reports

4. Shop Drawings

5. Product Data

6. Samples

7. List of Subcontractors

B. Related Sections: The following Sections contain requirements that relate to this Section:

1. Division 01 Section 01 11 00 " Summary of Work " specifies requirements for submittal of inspection and test reports.

2. Division 01 Section 01 70 00 "Execution and Closeout Requirements" specifies requirements for submittal of Project Record Documents, Operations & Maintenance Manuals and warranties at project closeout.

1.3 SUBMITTAL PROCEDURES

A. Coordination: Coordinate preparation and processing of submittals with performance of construction activities. Transmit each submittal sufficiently in advance of performance of related construction activities to avoid delay.

1. Coordinate transmittal of different types of submittals for related elements of the Work so processing will not be delayed by the need to review submittals concurrently for coordination.

a. The Contracting Officer reserves the right to withhold action on a submittal requiring coordination with other submittals until all related submittals are received.

2. Processing: To avoid the need to delay installation as a result of the time required to process submittals, allow sufficient time for submittal review, including time for re-submittals.

a. Allow 2 weeks for initial review. Allow additional time if the Contracting Officer’s Representative (COR) must delay processing to permit coordination with subsequent submittals.

b. If rejected, allow 2 weeks for reprocessing each submittal.

c. No extension of Contract Time will be authorized because of failure to transmit submittals to the Contracting Officer sufficiently in advance of the Work to permit processing.

B. Submittal Transmittal: Package each submittal appropriately for transmittal and handling. Transmit each submittal from the Contractor to the Contracting Officer’s Representative using the NPS Transmittal Form 01 33 10. The Contracting Officer’s Representative will not accept submittals received from sources other than the Contractor.

1. On the transmittal, record relevant information and requests for data. On the

Historic Stone Masonry Wall Repair Page 2 of 5 form, or separate sheet, record deviations from Contract Document requirements, including variations and limitations. Include Contractor's certification that information complies with Contract Document requirements.

2. Transmittal Form: Use the sample form at the end of this Section for transmittal of submittals.

1.4 STAFF NAMES

A. No less than (14) fourteen days prior to of commencement of construction operations, submit a list of the contractor’s principal staff assignments, including the superintendent and other personnel in attendance at the project site. Identify individuals and their duties and responsibilities.

1.5 CONTRACTOR'S CONSTRUCTION SCHEDULE

A. Bar-Chart Schedule: Prepare a fully developed, horizontal bar-chart-type, contractor's construction schedule. Submit no less than (14) fourteen calendar days prior to commencement of work as mutually agreed and stated in the Notice To Proceed.

1. Provide a separate time bar for each significant construction activity. Schedule shall graphically indicate a period for contractor submittals (noting long lead items), Notice to Proceed, all critical components of work, and projected dates for Substantial Completion and Final Inspection.

2. Provide a continuous vertical line to identify the first working day of each week.

3. Schedule Updating: Revise the Schedule immediately after each meeting or other activity where revisions have been recognized or made.

4. The schedule shall be prepared using MS Project or MicroSoft compatible scheduling program.

5. Submit three (3) paper copies. Submission shall also be made electronically.

Transmit via email attachment to the COR. Submit in both .mpp and .pdf file formats.

1.6 QUALITY ASSURANCE REPORTS

A. Submit quality-control submittals, including design data, certifications, manufacturer's instructions, manufacturer's field reports, and other quality-control submittals as required under other sections of the Specifications.

B. Certifications: Where other sections of the Specifications require certification that a product, material, or installation complies with specified requirements, submit a notarized certification from the manufacturer certifying compliance with specified requirements.

1.7 PRODUCT DATA

A. Collect Product Data into a single submittal for each element of construction or system. Product Data includes information, such as manufacturer's installation instructions, catalog cuts, standard color charts, roughing-in diagrams and templates, standard wiring diagrams, and performance curves.

1. Product Data shall marked to show applicable choices and options. Where Product Data includes information on several products that is not required, mark to indicate the applicable information. Include the following information:

a. Manufacturer's printed recommendations.

b. Compliance with trade association standards.

c. Compliance with recognized testing agency standards.

d. Application of testing agency labels and seals.

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e. Notation of dimensions verified by field measurement.

f. Notation of coordination requirements.

2. Do not submit Product Data until compliance with requirements of the Contract Documents has been confirmed.

1.8 SAMPLES

A. Submit full-size, fully fabricated Samples cured and finished, as specified, and physically identical with the material or product proposed. Samples include partial sections of manufactured or fabricated components, cuts or containers of materials, color range sets, and swatches showing color, texture, and pattern.

1. Mount or display Samples in the manner to facilitate review of qualities indicated.

Prepare Samples to match the Government’s sample. Include the following:

a. Specification Section numbers and reference.

b. Generic description of the Sample.

c. Sample source.

d. Product name or name of the manufacturer.

e. Compliance with recognized standards.

f. Availability and delivery time.

2. Submit Samples for review of size, kind, color, pattern, and texture. Submit samples for a final check of these characteristics with other elements and a comparison of these characteristics between the final submittal and the actual component as delivered and installed.

a. Where variation in color, pattern, texture, or other characteristic is inherent in the material or product represented, submit at least 3 multiple units that show approximate limits of the variations.

b. Samples shall illustrate workmanship, fabrication techniques, and details of assembly, connections, operation, and similar construction characteristics.

c. On the transmittal, indicate special requests regarding disposition of Sample submittals. Samples not incorporated into the Work, or otherwise designated as the Owner's property, are the property of the Contractor and shall be removed from the site prior to Substantial Completion.

3. Maintain sets of Samples, as returned, at the Project Site, for quality comparisons throughout the course of construction.

1.9 CONTRACTING OFFICER’S ACTION

A. Except for submittals for the record or information, where action and return is required, the Contracting Officer’s Representative will review each submittal, mark to indicate action taken, and return promptly.

1. Compliance with specified characteristics is the Contractor's responsibility.

B. Action Stamp: Each submittal will receive a uniform, action stamp. The

Contracting Officer’s Representative will mark the stamp appropriately to indicate the action taken, as follows:

1. Approved: When the Contracting Officer’s Representative marks a submittal "Approved," the Work covered by the submittal may proceed provided it complies with requirements of the Contract Documents. Final payment depends on that compliance.

2. Approved As Noted: When the Contracting Officer’s Representative marks a submittal "Approved as Noted," the Work covered by the submittal may proceed provided it complies with notations or corrections on the submittal and requirements of the Contract Documents. Final payment depends on that compliance.

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3. Disapproved, Resubmit: When the Contracting Officer’s Representative marks a submittal "Disapproved Resubmit," do not proceed with Work covered by the submittal, including purchasing, fabrication, delivery, or other activity. Revise or prepare a new submittal according to the notations; resubmit without delay.

Repeat if necessary to obtain different action mark.

a. Do not use, or allow others to use, submittals marked "Disapproved Resubmit" at the Project Site or elsewhere where Work is in progress.

1.10 SCHEDULE OF VALUES

A. Coordination: Coordinate preparation of the Schedule of Values with preparation of Contractor's Construction Schedule.

1. Correlate line items in the Schedule of Values with other required administrative forms and schedules, including the following:

a. Application for Payment forms with Continuation Sheets.

b. Submittals Schedule.

c. Contractor's Construction Schedule.

2. Submit the preliminary Schedule of Values to COR within fifteen (15) days after award of the contract.

3. Submit finalized Schedule of values within ten (10) days from the approval date of the Overall Construction Schedule. Submit the finalized Schedule of Values within ten (10) days after the issuance of the Notice to Proceed.

B. Format and Content: Use the Construction Specification table of contents as a guide to establish line items for the Schedule of Values. Provide at least one line item for each Specification Section.

1. Identification: Include the following Project identification on the Schedule of Values:

a. Contract number.

b. PMIS number.

c. Park unit.

d. Project name and location.

e. Contractor's name and address.

f. Date of submittal.

2. Submit Schedule of Values using AIA Forms G702 and G703 or approved equivalent.

3. Provide a breakdown of the Contract Sum in enough detail to facilitate continued evaluation of Applications for Payment and progress reports. Coordinate with the Project Specification table of contents. Provide line items for principal subcontract amounts, where appropriate. Include separate line items for operation and maintenance manuals, punch list activities, Project Record Documents, and demonstration and training.

4. When the Contracting Officer requires substantiating information, submit data justifying line item amounts in question.

5. Round amounts to nearest whole dollar; total shall equal the Contract Sum.

6. Provide a separate line item in the Schedule of Values for each part of the Work where Applications for Payment may include materials or equipment purchased or fabricated and stored, but not yet installed.

a. Differentiate between items stored on-site and items stored off-site. If specified, include evidence of insurance or bonded warehousing.

7. Each item in the Schedule of Values and Applications for Payment shall be complete. Include total cost and proportionate share of general overhead and profit for each item.

a. Temporary facilities and other major cost items that are not direct cost of actual work-in-place may be shown either as separate line items in the Schedule of Values or distributed as general overhead expense, Historic Stone Masonry Wall Repair Page 5 of 5 at Contractor's option.

8. Schedule Updating: Update and resubmit the Schedule of Values before the next Applications for Payment when Change Orders or Construction Change Directives result in a change in the Contract Sum.

9. The equitable value of work deleted from a lump sum contract shall be determined from the approved Schedule of Values.

PART 3 EXECUTION (Not Applicable)

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Date To Contractor: NCR r6/13

SUBMITTAL FORM - NATIONAL PARK SERVICE

Park: PMIS No.: Contract No.: Date: Transmittal No.:

Sheet: 1 of:

Title: Date:

Contractor's Signature:

I hereby certify that this submittal has been reviewed for accuracy, completeness, and compliance with contract requirements (FAR 52.236-21)

Review Comments:

Action Submittal

Informational Submittal

Contractor: NPS ACTIONSubcontractor / Supplier:

Recommended by:

Date Received: Distribution: 1 copy each: COR, PM, PARK, CONTRACTOR.

Title: Date:

Title: Date:

Action by:

Approval of this submittal is subject to the provisions of the contract drawings and specifications. This action is for general concurrence only and the government is not responsible for errors or omissions

DSC TEMPLATE

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Review Comments

SUBMITTAL FORM CONTINUATION - NATIONAL PARK SERVICE

Park: PMIS No.: Contract No.: Date: Transmittal No.:

Sheet: of:

NCR r6/13

Contractor: Subcontractor / Supplier: NPS ACTION

TEMPORARY SERVICES, FACILITIES AND CONTROLS 01 50 00

SECTION 01 50 00 - TEMPORARY SERVICES, FACILITIES AND CONTROLS

1.1 DESCRIPTION

A. The work of this section consists of providing temporary services, facilities and controls.

B. Work also consists of furnishing, installing, and maintaining barriers to protect existing stone wall during non-working hours.

1.2 SUBMITTALS

A. As specified in Section 01 33 00.

PART 2 PART 2- PRODUCTS

2.1 GENERAL

A. Material may be new or used, but shall be suitable for intended purpose. Fences and barriers shall be structurally adequate and neat in appearance.

2.2 BARRIER TAPE

B. Banner Guard, imprinted with "CAUTION: CONSTRUCTION AREA", manufactured by Reef Industries, Inc., Houston, Texas, or approved equal.

PART 3 EXECUTION

3.1 BARRIERS

A. Protection of Public: Fence, barricade, or otherwise block off the immediate work area to prevent unauthorized entry.

B. Barrier Tape: Install where directed by Contracting Officer’s Representative

(COR). Keep a minimum of two rolls on site at all times.

C. Removal: Completely remove barriers no longer needed when approved by COR.

3.2 CONTRACTOR'S USE OF PREMISES

A. Coordinate with the COR in performing the work of this contract and the use of premises.

B. For sites where electricity is available, Government will pay cost of electricity used.

C. Provide and maintain adequate approved facilities, as required for safety and construction requirements, during progress of the work.

D. Sanitary Facilities:

1. Contractor shall provide and maintain temporary toilet facilities in accordance with the State or local Health Department and National Park Service requirements.

2. Temporary toilet facilities shall be sufficiently sturdy, lighted, ventilated, weatherproof portable chemical toilet.

3. Place in approved locations secluded from public observation and convenient to work stations. Location to be approved by COR.

4. Relocate, as work progress requires.

5. Maintain and clean toilet facilities at least weekly.

6. Completely remove sanitary facilities on completion of work.

E. WATER:

1. For sites where potable water for construction is available, verify location for water hook up with COR. Contractor shall furnish all connections, temporary hook ups, and extensions. Government will pay costs for water used.

2. Contractor shall provide cool potable water for construction personnel and place in appropriate work locations for safe and convenient access.

F. Smoking is prohibited in the Work areas. Smoke only in a designated, approved area, kept clean at all times by the Contractor.

G. No telephone service is available on site for Contractor’s use.

H. Work Areas: The Contractor shall confine all operations to as small a space as required to complete the Work. The Contractor shall not change approved Work Areas without prior review by the COR.

I. Preservation of Historic Features: Confine all operations to the work limits of the project. Protect and prevent damage to historic features, finished, and surroundings. Restore damaged areas, repairing or replacing damaged materials, at no additional expense to the government.

J. Provide temporary barriers to protect existing materials.

1. Do not fasten ropes, cables, or guys to existing structure, features, or finishes.

2. Carefully supervise construction operations near the historic structure, features and finishes to prevent damage.

K. Preservation of Natural Features: Confine all operations to work limits of the project. Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

1. Provide temporary barriers to protect existing trees, plants and root zones.

2. Do not remove, injure, damage or destroy trees or other plants without prior approval from the Contracting Officer.

3. Do not fasten ropes, cables, or guys to existing trees or other plants.

4. Carefully supervise construction operations near trees and other plants to prevent damage.

L. Conduct of Operations: No signs or advertisements shall be displayed on the construction site or within the park except with approval of the Contracting Officer.

3.3 CONSTRUCTION PARKING

A. Parking areas shall be approved by COR. Parking permits will be issued by COR.

B. Control vehicular parking to preclude interference with Government operations or construction operations. Prohibit parking on or adjacent to access roads or in non-designated areas.

3.4 ENVIRONMENTAL CONTROLS

A. Take all necessary reasonable measures to reduce air and water pollution by any material or equipment used during construction.

B. Housekeeping and Rubbish Removal:

1. Keep project area neat, orderly, and in a safe condition at all times.

2. Provide refuse containers for collecting construction waste and debris.

Provide individually marked containers for recycling personal items, such as aluminum cans, newspapers, glass, plastic, corrugated cardboard, etc.

Recycling is highly encouraged, but not mandatory.

3. Location of container(s) larger than one cubic yard shall be proposed by the Contractor for review by COR. Contractor shall propose location(s) for container(s) to COR. Containers shall not be delivered to site until the location(s) is approved by COR.

4. Do not use National Park Service containers for collection or disposal of waste and trash resulting from Work.

5. Unless otherwise specified, refuse becomes the property of the Contractor and shall be disposed of outside the Park. Remove all debris and hazardous materials daily from the project site and take to a legal dumping area authorized to receive such materials.

6. All hazardous waste and materials shall be handled and disposed of in a proper and legal manner. Keep volatile wastes in covered containers.

7. The Contractor shall comply with all legal load regulations in the hauling of materials on public roads beyond the limits of the project site. Obtain information regarding rules and regulations for vehicular traffic and commercial vehicles from the State Department of Transportation.

C. Dust Control:

1. Provide positive methods and apply dust control materials to minimize raising dust from construction operations, and provide positive means to prevent air borne dust from dispersing into the atmosphere.

2. Wet down dry materials and rubbish to prevent blowing dust.

D. Pollution Control

1. Provide methods, means and facilities required to prevent contamination of soil, water or atmosphere by the discharge of noxious substances from construction operations.

2. Provide equipment and personnel to perform emergency measures required to contain any spillage, and to remove contaminated soils or liquids.

3. Take special measures to prevent harmful substances from entering public waters.

a. Prevent disposal of wastes, effluents, chemicals, volatile wastes, oils or other such substances in sanitary or storm sewers.

4. Provide systems for control of atmospheric pollutants.

b. Prevent toxic concentrations of chemicals.

c. Prevent harmful dispersal of pollutants into the atmosphere.

3.5 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Delivery:

1. Deliver materials in undamaged condition, in manufacturer’s original sealed and labeled containers or packaging, with identifying labels intact and legible.

Promptly inspect products, record shortages, and damaged or defective items.

2. Deliver materials in quantities required to allow for continuity of application, to minimize required storage and potential for inadvertent damage.

3. Coordinate delivery location and time with COR. Designate delivery dates for each product in the construction schedule. Materials requiring COR’s review shall not be delivered to project site until approved. Contractor’s workers shall be available to receive and unload materials and equipment delivered to site.

No materials or equipment shall be delivered to site unless workers are available.

B. Storage:

1. Coordinate storage locations, number and size of storage facilities with COR.

Structures shall be located to avoid interference with Work and Park operations. Move any stored products or storage facilities, under Contractor’s control, which interfere with operations of the Government or as required by progress of work with approval of COR.

2. Provide temporary sheds or other covered facilities for storage of materials subject to weather damage. If necessary, obtain and pay for the use of additional storage or work areas needed for operations.

3. Contractor shall assume full responsibility for the protection and safe keeping of products, materials, and equipment stored on the site under this contract.

4. Store material(s) out of direct exposure to the elements. Store products up off the ground on blocking or skids. Store all materials in accordance with manufacturer’s recommendations with seals and labels accessible for inspection. Cover all materials subject to damage or deterioration with impervious sheet coverings; provide adequate ventilation to avoid condensation.

5. Store loose granular material(s) in a well drained area on solid surface to prevent mixing with foreign matter.

6. Storage areas shall be left clean after completion of Work and all areas restored to their conditions at commencement of Work to satisfaction of the

COR.

C. Damaged Material: Any materials that are found to be damaged or stored in any manner other than stated above will be automatically rejected, removed and replaced at the Contractor’s expense.

D. Protection after Installation: Provide adequate coverings as necessary to protect installed materials from damage resulting from natural elements, traffic, & subsequent construction. Remove protective coverings when no longer needed.

E. Hauling Restrictions: Comply with all legal load restrictions in the hauling of materials. Load restrictions on park roads are identical to the state load restrictions with such additional regulations as may be imposed by the park superintendent. A special permit will not relieve Contractor of liability for damage which may result from moving of equipment.

1. Comply with motor vehicles regulations found in the States of Virginia and Maryland and all posted regulations found in the park.

2. Commercial Trucks: EXAMPLE: All commercial trucks using the George Washington Memorial Parkway and Memorial Avenue require a NPS permit.

Permit applications for George Washington Memorial Parkway will be made available by the Contracting Office.

3.6 FIRE PREVENTION AND PROTECTION

A. Responsible person: A capable and qualified person shall be placed in charge of fire protection.

B. Hazard Control: Take all necessary precautions to prevent fire during construction.

C. Provide and maintain extinguisher(s) having a minimum UL rating of 2-A:10-B:C.

D. Spark Arresters: Utilize spark arrestors on power equipment. Determinations of periods and areas of potential fire hazard will be as determined by the park superintendent.

E. Service and Refueling Areas: Locate areas a minimum of 50 feet from buildings.

Shut down equipment before refueling.

3.7 REMOVAL

A. Remove temporary materials, equipment, services and construction prior to Substantial Completion inspection.

B. Clean and repair damage caused by installation or use of temporary facilities.

EXECUTION AND CLOSEOUT REQUIREMENTS 01 70 00

Historic Stone Masonry Wall Repair Page 1 of 1

SECTION 01 70 00 – EXECUTION AND CLOSEOUT REQUIREMENTS

A. Drawings and general provisions of the Contract and other Division 01 Specification Sections apply to this Section.

1.2 SUMMARY

A. This Section includes administrative and procedural requirements for contract closeout including, but not limited to, the following:

1. Final cleaning.

1.3 INSPECTION PROCEDURES

A. Submit written certification that project is substantially complete, and request in writing a final inspection. The Contracting Officer’s Representative (COR) will make an inspection within 10 days of receipt of request.

1. When work is determined to be substantially complete, Contracting Officer will prepare a list of deficiencies to be corrected before final acceptance and issue a Letter of Substantial Completion. Contractor shall complete the work described on the list of deficiencies within a timeframe to be determined by the Contracting Officer. If the Contractor fails to complete the work within this time frame, the Contracting Officer may replace, repair, or remedy the work with an appropriate reduction in the contract price.

2. If work is not determined to be substantially complete, the Contracting Officer will notify the Contractor in writing. After completing work, the Contractor shall resubmit certification and request a new final inspection.

3. After all deficiencies have been corrected, a Letter of Acceptance will be issued.

PART 3 EXECUTION

1.4 FINAL CLEANING

A. Cleaning: Clean each surface or unit to the condition expected in a normal, commercial building cleaning and maintenance program. Comply with manufacturer's instructions. Consult with the COR and park staff to discuss appropriate cleaning materials and techniques. Employ experienced workers or professional cleaners for final cleaning.

B. Site Cleaning: Clean site of all debris, trash, surplus materials, construction equipment, containers and appurtenances. Dispose of all refuse outside the Park at a legal dumping area authorized to receive such materials. Restore pavements, grass areas etc. within the Limits of Disturbance (LOD).

CAST-IN-PLACE CONCRETE 03 33 00

SECTION 03 33 00 - CAST-IN-PLACE CONCRETE

PART 1 GENERAL

1 .1 REFERENCES

A. The publications listed below form a part of this section to the extent referenced:

1. AMERICAN CONCRETE INSTITUTE (ACI)

a. ACI 117 (1990) Standard Specification for Tolerances for Concrete Construction and Materials

b. ACI 302.1R (1996) Guide for Concrete Floor and Slab Construction

c. ACI 308 (1992) Standard Practice for Curing Concrete

d. ACI 315 (1992) Details and Detailing of Concrete Reinforcement

e. ACI 318 (1989; 318R-02) Building Code Requirements for

Reinforced Concrete

f. ACI 347 (1989) Formwork for Concrete

2. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

a. ASTM A 615/A 615M (2001b) Standard Specification for Deformed and

Plain Billet-Steel Bars for Concrete Reinforcement

b. ASTM C 143/C 143M (2000) Standard Test Method for Slump of

Hydraulic Cement Concrete

c. ASTM C 172 (1999) Standard Practice for Sampling Freshly Mixed

Concrete

d. ASTM C 183 (1997) Standard Practice for Sampling and the Amount of

Testing of Hydraulic Cement

e. ASTM C 260 (2001) Standard Specification for Air-Entraining

Admixtures for Concrete

f. ASTM C 309 (1998a) Standard Specification for Liquid Membrane-

Forming Compounds for Curing Concrete

g. ASTM C 39/C 39M (2001) Standard Test Method for Compressive

Strength of Cylindrical Concrete Specimens

h. ASTM C 494/C 494M (1999ae1) Standard Specification for Chemical

Admixtures for Concrete

i. ASTM C 618 (2001) Standard Specification for Coal Fly Ash and Raw or

Calcined Natural Pozzolan for Use as a Mineral Admixture in Concrete

j. ASTM C 94/C 94M (2000e2) Standard Specification for Ready-Mixed

Concrete

k. ASTM C 989 (1999) Standard Specification for Ground Granulated

Blast-Furnace Slag for Use in Concrete and Mortars

l. ASTM E 1155/E 1155M (1996) Standard Test Method for

Determining Floor Flatness and Floor Levelness Numbers

1 .2 GENERAL

A. All work shall be in accordance with ACI 318.

1 .3 QUALITY ASSURANCE

A. In addition to field reference required by ACI 301-99, provide a copy of ASTM C33-93.

All references shall be available at the jobsite for use by the Contacting Officer before beginning concrete work.

B. The Contractor shall be responsible for all concrete testing, including testing identified as being the responsibility of the "Owner" in ACI 301-99. Testing services specified in Article 1.6.4.2 are required.

1 .4 SUBMITTALS

A. The following shall be submitted in accordance with Section 01330, "Submittal Procedures," in sufficient detail to show full compliance with the specification:

1. Design Data

a. Mix design data shall be submitted in accordance with the paragraph entitled, "Ready-Mix Concrete," of this section.

2. Test reports shall be in accordance with tests as described in the paragraph entitled, "Field Testing," of this section for the following items:

a. Slump Tests

b. Air-Entrainment Tests

c. Compressive Strength Tests

d. Measurement of Floor Tolerances

3. Certificates

a. Bill of Landing for Ready-Mix Concrete deliveries.

4. Certificates of compliance shall be provided showing conformance with referenced standards contained in this section for the following:

a. Proposed Ready-Mix Concrete

b. Fly Ash

c. Air-Entraining Admixtures

d. Steel Reinforcement

e. Curing Compound

1 .5 INSTALLATION DRAWINGS

A. Installation drawings for Concrete Placement Steel Reinforcement shall show locations, dimensions, and arrangement, and indicated locations of expansion, contraction, and control joints for cast-in-place concrete sections.

PART 2 PRODUCTS

2 .1 READY-MIX CONCRETE

A. Concrete shall be ready-mix concrete and mix design data shall conform to ASTM C 94/C 94M, minimum Compressive Strength 4000 psi at 28 days.

B. Slump shall be between 4 and 6 inches, according to ASTM C 143/C 143M.

C. Chloride Ion Content: Chlorides are not permitted.

D. One brand and type of cement shall be used for formed concrete having exposed-to-view finished surfaces.

E. Air-Entraining Admixtures shall conform to ASTM C 260.

F. Water-reducing admixtures, retarding admixtures, accelerating admixtures, water-reducing and accelerating admixtures, and water-reducing and retarding admixtures shall conform to ASTM C 494/C 494M.

G. Fly Ash is required as an admixture and shall conform to ASTM C 618, Class C or F with 4 percent maximum loss on ignition and between 15 to 35 percent maximum cement replacement by weight.

H. Ground granulated blast furnace slag used as an admixture and shall conform to ASTM C 989, Grade 120 with between 25 to 50 percent maximum cement replacement by weight.

2 .2 FORMS

A. Forms shall be of wood, steel, or other approved material and shall conform to ACI 318.

B. Form release shall conform to ACI 347.

2 .3 ACCESSORIES

A. Curing Compound shall conform to ASTM C 309.

PART 3 EXECUTION

3 .1 FORM WORK

A. Formwork shall be in accordance with ACI 318.

B. Preparation of Form Surfaces: Forms shall be true to line and grade, mortar-tight, and sufficiently rigid to prevent objectionable deformation under load. Form surfaces for permanently exposed faces shall be smooth, free from irregularities, dents, sags, or holes. Exposed joints and exposed edges shall be chamfered. Internal ties shall be arranged that when the forms are removed, the form ties will be not less than 2 inches from concrete surfaces permanently exposed to view or exposed to water on the finished structure.

C. Form Coating: Forms for exposed surfaces shall be coated with a non-staining form release coating which shall be applied shortly before concrete is placed. Forms for unexposed surfaces may be wetted in lieu of coating immediately before the placing of concrete, except that in freezing weather form release coating shall be used.

D. Removal of Forms: Forms shall be removed carefully to prevent damage to the concrete.

3 .2 BILL OF LANDING

A. Bill of Lading for each ready-mix concrete delivery shall be in accordance with ASTM C 94/C 94M.

3 .3 CONCRETE CONVEYING

A. Concrete shall be conveyed from mixers to forms as rapidly as practical by methods that will prevent segregation or loss of ingredients.

3 .4 CONCRETE PLACING

A. General Placing Requirements

1. Concrete shall be placed in accordance with ACI 318.

2. Concrete shall be worked into the corners and angles of the forms and around reinforcement and embedded items without permitting the materials to segregate.

Concrete shall be placed within 90 minutes after it has been mixed. It shall be placed on clean, damp surfaces free from water, ice, frost, mud, debris, or objectionable coatings. Concrete shall be consolidated with the aid of mechanical vibrating equipment supplemented by handspading and tamping. Vibrating equipment shall be of the internal type.

3 .5 FINISHING

A. Defective concrete, voids shall be repaired immediately after the removal of forms.

3 .6 CURING AND PROTECTION

A. Concrete shall be cured in accordance with ACI 308.

B. Curing shall be accomplished by moist curing, by moisture-retaining cover curing, by membrane curing, or by combinations thereof.

C. Moist curing shall be accomplished by keeping surface of concrete wet or by covering with absorptive cover saturated with water and kept wet.

D. Moisture-retaining cover curing shall be accomplished by covering concrete surfaces with moisture-retaining cover for curing concrete.

E. Membrane curing shall be accomplished by applying specified membrane-forming curing compound to damp concrete surfaces as soon as moisture film has disappeared.

3 .7 FIELD TESTING

A. Testing shall conform to ASTM C 39/C 39M. Quality-control during construction shall be by the Contractor.

B. Specimens shall be tested for Compressive Strength at 7 days and at 28 days for each design mix.

C. Test frequency according to ASTM C 183 and ASTM C 172.

STONE WALLS 04 40 02

Historic Stone Masonry Wall Repair Page 1 of 6

SECTION 04 40 02

STONE WALL REPAIR AND CLEANING

1.1 GENERAL REQUIREMENTS

A. Work of this Section, as shown or specified, shall be in accordance with the requirements of the Contract Documents.

1.2 SECTION INCLUDES

A. Work of this Section includes all labor, materials, equipment and services necessary to complete the stone wall repair as shown on the drawings and/or specified herein, including but not limited to, the following:

1. Masonry Conservation Testing materials and methods used in the masonry restoration.

2. Removal of general soiling, biological growth, paint residue and other staining as indicated.

3. Repointing mortar joints on stone walls.

1.3 ALLOWANCES

A. Quantities for stone wall repair are as indicated on the drawings. Allowances are not included in this contract. Project is a lump sum bid.

1. Prior to beginning restoration work, each wall will be inspected by the

Contractor to verify the scope of work. Any discrepancies between the site conditions and the specified scope of work shall be brought to the attention of the COR immediately.

2. See elevation drawings for number of masonry unit replacements for missing stone. Allow an additional 10% above the quantity shown for estimating purposes. Work items may be switched out upon discussion with and approval by COR.

3. Perform work that exceeds contracted quantities only as authorized by Change Orders.

1.4 DEFINITIONS

A. Repointing: The process of raking out (removing) mortar and replacing it with new mortar.

B. Pointing: The process of placing new mortar in existing joint spaces, which have previously been raked out. This term does not include the raking out process.

C. Tuck-pointing: The process of touching up existing mortar joints by filling in recesses with new mortar, without first raking out the joints.

D. Repair: The process of returning an item or building component to whole full performance and appearance without replacement.

E. Prepare: The process of making ready the area at which the work will occur. Remove all material as required for the work.

F. Clean: The process making a surface free from dirt or discoloration in the work.

G. Match: The process producing a result that in the opinion of the COR, exhibits exactly the same material, type, species, color, pattern, profile and surfacing.

H. Remove: The process whereby item or building component is dismantled or taken out of location and set aside on site for possible reuse, salvage or disposal at the direction of the

COR.

I. Replace: The process whereby item or building component removed or missing is filled in with new matching item or component.

J. Salvage: The process of saving material from being disposed of and preparing it for reuse or storage.

K. Patch: The process of making a physically and aesthetically compatible repair to a small area in lieu of replacement.

L. Rebuild: The process whereby a building system or component is dismantled and reassembled using viable original components supplemented by new matching components to yield whole full performance and appearance. May involve dismantling, Historic Stone Masonry Wall Repair Page 2 of 6 remove, repair, replacement and modifications in various combinations. Viability of components shall be in the opinion of the COR.

M. Dismantle: The process whereby a building system or component is disassembled or unbuilt by effectively reversing the order in which it was assembled. Elements dismantled shall be set aside and protected on site for possible reuse, salvage or disposal at the direction of the COR.

1.5 SUBMITTALS

A. General: Submit the following according to the Conditions of the Contract.

1. Product data for each product indicated including recommendations for their applications and use. Include test reports and certifications substantiating that products comply with requirements.

a) Products shall include masonry conservation materials, stone mortar, and shall match existing in appearance. Performance of these materials, such as absorption rates, shall be of up-to-date technical standards.

b) Contractor shall receive samples of existing masonry and mortars at the direction of the COR.

B. Samples for verification purposes prior to erecting the mock-up, of the following:

1. Each new exposed masonry material to be used for replacing existing materials. Include in each set of samples the full range of colors and textures to be expected in the completed Work.

2. Each type of sand used for pointing mortar. Identify source, both supplier and quarry.

3. Each type of mortar for pointing and masonry rebuilding and repair in the form of sample mortar strips 6 inches long by ½ inch wide set in aluminum or plastic channels.

a) Include with…