Sample_Task_Order__3_Specs.pdf

USDA FOREST SERVICE PROJECT SPECIFICATIONS

IDIQ FOR FACILITY MAINTENANCE AND CONSTRUCTION SECTION 00 01 50 - 1

SPECIFICATIONS

FOR

SAMPLE TASK ORDER #3

(KEOWN FALLS OBSERVATION DECK REPLACEMENT)

FACILITIES IDIQ

PREPARED BY: SUPERVISORS OFFICE

CHATTAHOOCHEE-OCONEE NATIONAL FORESTS

1755 CLEVELAND HIGHWAY

GAINESVILLE, GA 30501

IDIQ FOR FACILITY MAINTENANCE AND CONSTRUCTION SECTION 00 01 50 - 2

SECTION 00 01 50

SPECIFICATIONS INDEX

DIVISION 00 CONTRACTING REQUIREMENTS

00 01 15 List of Drawings Sheets 00 01 50 Specifications Index

DIVISION 01 GENERAL REQUIREMENTS

01 11 00 Summary of Work 01 16 00 Product Requirements 01 20 00 Price and Payment Procedures 01 30 00 Administrative Requirements 01 57 13 Temporary Erosion and Sedimentation Control

DIVISION 02 EXISTING CONDITIONS

02 41 00 Demolition

DIVISION 03 CONCRETE

03 10 00 Concrete Formwork 03 20 00 Concrete Reinforcement 03 30 00 Cast-in-Place Concrete

DIVISION 04 MASONRY

04 20 00 Unit Masonry 04 43 00 Stone Masonry for Site Features 04 43 13 Stone Masonry Veneer

DIVISION 05 METALS

05 12 00 Structural Steel 05 50 00 Metal Fabrications

DIVISION 06 WOOD, PLASTICS, AND COMPOSITES

06 10 00 Rough Carpentry 06 13 00 Heavy Timber Framing 06 15 00 Wood Decking

END OF SECTION

LIST OF DRAWINGS SHEETS 01 01 15 - 1

SECTION 01 01 15

LIST OF DRAWINGS SHEETS

TITLE SHEET 1 OF 8

PLAN VIEW 2 OF 8

CROSS SECTIONS 3 OF 8

DECKING PLAN 4 OF 8

CONNECTION DETAILS 5 OF 8

ENTRANCE DETAIL 6 OF 8

BENCH DETAIL 7 OF 8

CMU WALL DETAIL 8 OF 8

SUMMARY OF WORK 01 11 00 - 1

SECTION 01 11 00

SUMMARY OF WORK

PART 1 – GENERAL

A. DESCRIPTION OF WORK

The intent of this project is to provide a safer facility for public use. The existing deck is old and its hardware is starting to show its age: rust, shear contact are some of the concerns. The project consists of removing the existing 20' by 16' deck at Keown Falls. We are replacing the deck with a new wooden deck 20' by 16' in the same location and building a CMU wall to the north end to add stability to the structure. We are facing this wall with rock veneer to match existing rock columns (to be re-used) for aesthetics.

B. LOCATION

From I-75 Exit 320 near Resaca, GA, go west on highway 136 for 7 miles. At stop sign, turn right to stay on highway 136 for another 7 miles. Turn left on Pocket County Road and continue for 5 miles.

Turn right on Forest Service Road 702 and proceed 0.6 miles to picnic area.

C. PRICE RANGE

The Government price range is less than $25,000.

D. ENVIRONMENTAL

The Contractor is to dispose of all waste material off of National Forest System Lands in an appropriate manner, and location.

The Contractor SHALL NOT remove any merchantable timber from the project.

The Contractor SHALL NOT perform any equipment maintenance within 100 feet of any stream.

Contractor shall be extremely careful working around the north cliff.

E. CONTRACT TIME IS 60 DAYS

F. INSPECTION AND ACCEPTANCE

Periodic field inspections will be made by the Contracting Officer’s Representative (COR) or the COR’s designated inspector. Work not completed to the Contract Specifications shall be reworked without compensation to the contractor.

G. SPECIFCATIONS

The Contractor shall furnish the necessary personnel, material equipment, services and facilities (except as otherwise specified), to perform the description of work/Statement of Work reference in Section J.

PRODUCT REQUIREMENTS 01 16 00 - 1

SECTION 01 16 00

PRODUCT REQUIREMENTS

1.1 RELATED SECTIONS

A. None

1.2 SUBMITTALS

A. Proposed Products List: Submit list of major products proposed for use, with name of manufacturer, trade name and model number of each product.

1. Submit within 15 days after date of Agreement.

2. For products specified only by reference standards, list applicable reference standards.

B. Product Data Submittals: Submit manufacturer's standard published data. Mark each copy to identify applicable products, models, options, and other data. Supplement manufacturers' standard data to provide information specific to this Project.

C. Shop Drawing Submittals: Prepared specifically for this Project; indicate utility and electrical characteristic s, utility connection requirements, and location of utility outlets for service for functional equipment and appliances.

D. Sample Submittals: Illustrate functional and aesthetic characteristics of the product, with integral parts and attachment devices. Coordinate sample submittals for interfacing work.

1. For selection from standard finishes, submit samples of the full range of the manufacturer's standard colors, textures, and patterns.

PART 2 - PRODUCTS

2.1 EXISTING PRODUCTS

A. Do not use materials and equipment removed from existing premises unless specifically required or permitted by the Contract Documents.

B. Existing materials and equipment indicated to be removed, but not to be re-used relocated, reinstalled, delivered to the US FOREST SERVICE, or otherwise indicated as to remain the property of the US FOREST SERVICE, become the property of the Contractor; remove from site.

C. Specific Structures to be reused; Foundation (Columns)

2.2 NEW PRODUCTS

A. Provide new products unless specifically required or permitted by the Contract Documents.

B. Do not use products having any of the following characteristics:

1. Made outside the United States, its territories, Canada, or Mexico.

PRODUCT REQUIREMENTS 01 16 00 - 2

2.3 PRODUCT OPTIONS

A. Products Specified by Reference Standards or by Description Only: Use any product meeting those standards or description.

B. Products Specified by Naming One or More Manufacturers: Use a product of one of the manufacturers named and meeting specifications, no options or substitutions allowed.

C. Products Specified by Naming One or More Manufacturers with a Provision for Substitutions:

Submit a request for substitution for any manufacturer not named.

PART 3 - EXECUTION

3.1 SUBSTITUTION PROCEDURES

A. Instructions to Bidders specify time restrictions for submitting requests for substitutions during the bidding period. Comply with requirements specified in this SECTION.

B. US FOREST SERVICE will consider requests for substitutions only within 15 days after date of

Agreement.

C. Document each request with complete data substantiating compliance of proposed substitution with Contract Documents.

D. A request for substitution constitutes a representation that the submitter:

1. Has investigated proposed product and determined that it meets or exceeds the quality level of the specified product.

2. Will provide the same warranty for the substitution as for the specified product.

3. Will coordinate installation and make changes to other Work that may be required for the Work to be complete with no additional cost to US FOREST SERVICE.

4. Waives claims for additional costs or time extension that may subsequently become apparent.

E. Substitution Submittal Procedure:

1. Submit three copies of request for substitution for consideration. Limit each request to one proposed substituti on.

2. Submit shop drawings, product data, and certified test results attesting to the proposed product equivalence. Burden of proof is on proposer.

3. The US FOREST SERVICE will notify Contractor in writing of decision to accept or reject request.

3.2 TRANSPORTATION AND HANDLING

A. Coordinate schedule of product delivery to designated prepared areas in order to minimize site storage time and potential damage to stored materials.

B. Transport and handle products in accordance with manufacturer's instructions.

C. Transport materials in covered trucks to prevent contamination of product and littering of surrounding areas.

D. Promptly inspect shipments to ensure that products comply with requirements, quantities are correct, and products are undamaged.

E. Provide equipment and personnel to handle products by methods to prevent soiling, disfigurement, or damage.

F. Arrange for the return of packing materials, such as wood pallets, where economically feasible.

PRODUCT REQUIREMENTS 01 16 00 - 3

3.3 STORAGE AND PROTECTION

A. Designate receiving/storage areas for incoming products so that they are delivered according to installation schedule and placed convenient to work area in order to minimize waste due to excessive materials handling and misapplication.

B. Store and protect products in accordance with manufacturers' instructions.

C. Store with seals and labels intact and legible.

D. Store sensitive products in weather tight, climate controlled, enclosures in an environment favorable to product.

E. For exterior storage of fabricated products, place on sloped supports above ground.

F. Cover products subject to deterioration with impervious sheet covering. Provide ventilation to prevent condensation and degradation of products.

G. Prevent contact with material that may cause corrosion, discoloration, or staining.

H. Provide equipment and personnel to store products by methods to prevent soiling, disfigurement, or damage.

I. Arrange storage of products to permit access for inspection. Periodically inspect to verify products are undamaged and are maintained in acceptable condition.

PRICE AND PAYMENT PROCEDURES 01 20 00 - 1

SECTION 01 20 00

PRICE AND PAYMENT PROCEDURES

1.1 SECTION INCLUDES

A. Procedures for preparation and submittal of applications for progress payments.

B. Documentation of changes in Contract Price and Contract Time.

C. Change procedures.

D. Procedures for preparation and submittal of application for final payment.

1.2 SCHEDULE OF VALUES

A. Electronic media printout including equivalent information will be considered in lieu of standard form specified; submit sample to US FOREST SERVICE for approval.

B. Revise schedule to list approved Change Orders, with each Application For Payment.

1.3 APPLICATIONS FOR PROGRESS PAYMENTS

A. Payment Period: Submit at intervals stipulated in the Agreement.

B .Electronic media printout including equivalent information will be considered in lieu of standard form specified; submit sample to US FOREST SERVICE for approval.

C. For each item, provide a column for listing each of the following:

1. Item Number.

2. Description of work.

3. Scheduled Values.

4. Previous Applications.

5. Work in Place and Stored Materials under this Application.

6. Authorized Change Orders.

7. Total Completed and Stored to Date of Application.

8. Percentage of Completion.

9. Balance to Finish.

10. Retainage.

D. Execute certification by signature of authorized officer.

E. Submit three copies of each Application for Payment.

F. Include the following with the application:

1. Transmittal letter as specified for Submittals in SECTION 01 30 00.

2. Construction progress schedule, revised and current as specified in SECTION 01 30 00.

1.4 MODIFICATION PROCEDURES

A. For minor changes not involving an adjustment to the Contract Price or Contract Time, US FOREST SERVICE C.O.R. (Contracting Officer Representative) will issue instructions directly to Contractor.

B.F or other required changes, US FOREST SERVICE will issue a document signed by US FOREST SERVICE Contracting Officer instructing Contractor to proceed with the change, for subsequent inclusion in a Change Order.

PRICE AND PAYMENT PROCEDURES 01 20 00 - 2

1. The document will describe the required changes and will designate method of determining any change in Contract Price or Contract Time.

2. Promptly execute the change.

C. Computation of Change in Contract Amount: As specified in the Agreement and Conditions of the

Contract.

1. Change in contract amount shall be negotiated between Contracting Officer and Contractor.

D. Substantiation of Costs: Provide full information required for evaluation.

1. On request, provide following data:

a. Quantities of products, labor, and equipment.

b. Taxes, insurance, and bonds.

c. Overhead and profit.

d. Justification for any change in Contract Time.

e. Credit for deletions from Contract, similarly documented.

E. Execution of Change Orders: US FOREST SERVICE will issue Change Orders for signatures of parties as provided in the Conditions of the Contract.

1.5 APPLICATION FOR FINAL PAYMENT

A. Prepare Application for Final Payment as specified for progress payments, identifying total adjusted Contract Price, previous payments, and sum remaining due.

B. Application for Final Payment will not be considered until the following have been accomplished:

1. All closeout procedures specified in SECTION 01 70 00.

ADMINISTRATIVE REQUIREMENTS 01 30 00 - 1

SECTION 01 30 00

ADMINISTRATIVE REQUIREMENTS

PART 1 - GENERAL

A. Preconstruction meeting.

B. Construction progress schedule.

C. Submittals for review, information, and project closeout.

D. Number of copies of submittals.

E. Submittal procedures.

1.2 PROJECT COORDINATION

A. Cooperate with the Project COR in allocation of mobilization areas of site; for field offices and sheds, for ac-cess, traffic, and parking facilities.

B. During construction, coordinate use of site and facilities through the Project COR

C. Comply with Project COR's procedures for intra-project communications; submittals, reports and records, sched-ules, coordination drawings, and recommendations; and resolution of ambiguities and conflicts.

D. Comply with instructions of the Project COR for use of temporary utilities and construction facilities.

E. Coordinate field engineering and layout work under instructions of the Project COR.

F. Make the following types of submittals to US FOREST SERVICE through the Project COR:

1. Requests for interpretation.

2. Requests for substitution.

3. Shop drawings, product data, and samples.

4. Test and inspection reports.

5. Manufacturer's instructions and field reports.

6. Applications for payment and change order requests.

7. Progress schedules.

PART 2 - PRODUCTS ( NOT USED)

PART 3 – EXECUTION

3.1 PRECONSTRUCTION MEETING

A. US FOREST SERVICE will schedule a meeting after Notice of Award.

B. Attendance Required:

1. US FOREST SERVICE Contracting Officer.

2. US FOREST SERVICE COR and inspector

3. Contractor and any sub-contractor

C. Agenda:

1. Distribution of Contract Documents.

2. Submission of list of Subcontractors, list of Products, schedule of values, and progress schedule.

3. Designation of personnel representing the parties to Contract, and US FOREST SERVICE.

4.

ADMINISTRATIVE REQUIREMENTS 01 30 00 - 2

5. Procedures and processing of field decisions, submittals, substitutions, applications for pay-ments, proposal request, Change Orders, and Contract closeout procedures.

6. Scheduling.

D. Record minutes and distribute copies within two days after meeting to participants, with two copies to US Forest Service, US Forest Service, participants, and those affected by decisions made.

3.2 PROGRESS PHOTOGRAPHS

A. Submit photographs with each application for payment, taken not more than 3 days prior to sub-mission of an a pplication for payment.

3.3 SUBMITTALS FOR REVIEW

A. When the following are specified in individual SECTION s, submit them for review:

1. Product data.

2. Shop drawings.

3. Samples for selection.

4. Samples for verification.

B. Submit to US FOREST SERVICE COR for review for the limited purpose of checking for con-formance with information given and the design concept expressed in the contract documents.

C. Samples will be reviewed only for aesthetic, color, or finish selection.

3.4 SUBMITTALS FOR INFORMATION

A. When the following are specified in individual SECTION s, submit them for information:

1. Design data.

2. Certificates.

3. Test reports.

4. Inspection reports.

5. Manufacturer's instructions.

6. Manufacturer's field reports.

7. Other types indicated.

3.5 NUMBER OF COPIES OF SUBMITTALS

A. Documents for Review:

1. Small Size Sheets, Not Larger Than 8-1/2 x 11 inches: Submit the number of copies that Contractor requires, plus two copies that will be retained by US FOREST SERVICE.

B. Documents for Information: Submit two copies.

C. Samples: Submit the number specified in individual specification SECTION s; one of which will be retained by US FOREST SERVICE.

1. After review, produce duplicates.

2. Retained samples will not be returned to Contractor unless specifically so stated.

3.6 SUBMITTAL PROCEDURES

A. Transmit each submittal with AIA Form G810.

B. Sequentially number the transmittal form. Revise submittals with original number and a sequential al-phabetic suffix.

ADMINISTRATIVE REQUIREMENTS 01 30 00 - 3

C. Identify Project, Contractor, Subcontractor or supplier; pertinent drawing and detail number, and spec-ification SECTION number, as appropriate on each copy.

D. Apply Contractor's stamp, signed or initialed certifying that review, approval, verification of Products required, field dimensions, adjacent construction Work, and coordination of information is in ac-cordance with the requirements of the Work and Contract Documents.

E. Deliver submittals to US FOREST SERVICE COR at business address.

F. Schedule submittals to expedite the Project, and coordinate submission of related items.

G. For each submittal for review, allow 15 days excluding delivery time to and from the Contractor.

H. Identify variations from Contract Documents and Product or system limitations that may be detri-mental to successful performance of the completed Work.

I. Provide space for Contractor and US FOREST SERVICE review stamps.

J. When revised for resubmission, identify all changes made since previous submission.

K. Distribute copies of reviewed submittals as appropriate. Instruct parties to promptly report any ina-bility to comply with requirements.

TEMPORARY EROSION AND SEDIMENTATION CONTROL 01 57 13 - 1

SECTION 01 57 13

TEMPORARY EROSION AND SEDIMENTATION CONTROL

A. Prevention of erosion due to construction activities.

B. Prevention of sedimentation of waterways, open drainage ways, and storm and sanitary sewers due to construction activities.

C. Restoration of areas eroded due to insufficient preventive measures.

D. Compensation of US FOREST SERVICE for fines levied by authorities having jurisdiction due to non- compliance by Contractor.

1.2 PERFORMANCE REQUIREMENTS

A. Comply with all requirements of U.S. Environmental Protection Agency for erosion and sedimentation control, as specified for the National Pollutant Discharge Elimination System (NPDES), Phases I and II, under requirements for the 2003 Construction General Permit (CGP), whether the project is required by law to comply or not.

B. Best Management Practices Standard: Federal Highway Administration Best Management Practices for Erosion and Sediment Control.

C. Develop and follow an Erosion and Sedimentation Prevention Plan and submit periodic inspection reports.

D. Timing: Put preventive measures in place as soon as possible after disturbance of surface cover and before precipitation occurs.

E. Storm Water Runoff: Control increased storm water runoff due to disturbance of surface cover due to construction activities for this project.

1. Prevent runoff into creek, storm and sanitary sewer systems, including open drainage channels, in excess of actual capacity or amount allowed by authorities having jurisdiction, whichever is less.

2. Anticipate runoff volume due to the most extreme short term and 24- hour rainfall events that might occur in 25 years.

E. Erosion On Site: Minimize wind, water, and vehicular erosion of soil on project site due to construction activities for this project.

1. Control movement of sediment and soil from temporary stockpiles of soil.

2. Prevent development of ruts due to equipment and vehicular traffic.

3. If erosion occurs due to non-compliance with these requirements, restore eroded areas at no cost to US FOREST SERVICE.

G. Erosion Off Site: Prevent erosion of soil and deposition of sediment on other properties caused by water leaving the project site due to construction activities for this project.

1. Prevent windblown soil from leaving the project site.

2. Prevent tracking of mud onto public roads outside site.

3. Prevent mud and sediment from flowing onto sidewalks and pavements.

4. If erosion occurs due to non-compliance with these requirements, restore eroded areas at no cost to US FOREST SERVICE.

TEMPORARY EROSION AND SEDIMENTATION CONTROL 01 57 13 - 2

H. Sedimentation of Waterways On Site: Prevent sedimentation of waterways on the project site, including rivers, streams, lakes, ponds, open drainage ways, storm sewers, and sanitary sewers.

1. If sedimentation occurs, install or correct preventive measures immediately at no cost to US

FOREST SERVIC

E; remove deposited sediments; comply with requirements of authorities having jurisdiction.

2. If sediment basins are used as temporary preventive measures, pump dry and remove deposited sediment after each storm.

I. Sedimentation of Waterways Off Site: Prevent sedimentation of waterways off the project site, including rivers, streams, lakes, ponds, open drainage ways, storm sewers, and sanitary sewers.

1. If sedimentation occurs, install or correct preventive measures immediately at no cost to US FOREST SERVICE; remove deposited sediments; comply with requirements of authorities having jurisdiction.

J. Open Water: Prevent standing water that could become stagnant.

K. Maintenance: Maintain temporary preventive measures until permanent measures have been established.

1.3 SUBMITTALS

A. See SECTION 01 30 00 Administrative Requirements, for submittal procedures.

B. Erosion and Sedimentation Control Plan:

1. Submit within 2 weeks after Notice to Proceed.

2. Obtain the approval of the Plan by US FOREST SERVICE.

PART 2 - PRODUCT REQUIREMENTS

2.1 RELATED SECTIONS

A. SECTION 01 16 00 Products Requirements

3.1 EXAMINATION

A. Examine site and identify existing features that contribute to erosion resistance; maintain such existing features to greatest extent possible.

3.2 PREPARATION

A. Schedule work so that soil surfaces are left exposed for the minimum amount of time.

3.3 MAINTENANCE

A. Inspect preventive measures weekly, within 24 hours after the end of any storm that produces

0.5 inches or more rainfall at the project site, and daily during prolonged rainfall.

B. Repair deficiencies immediately.

C. Clean out temporary sediment control structures weekly and relocate soil on site.

D. Place sediment in appropriate locations on site; do not remove from site.

TEMPORARY EROSION AND SEDIMENTATION CONTROL 01 57 13 - 3

3.4 CLEAN UP

A. Remove temporary measures after permanent measures have been installed, unless permitted to remain by US FOREST SERVICE C.O.R.

B. Clean out temporary sediment control structures that are to remain as permanent measures.

C. Where removal of temporary measures would leave exposed soil, shape surface to an acceptable grade and finish to match adjacent ground surfaces.

DEMOLITION 02 41 00 - 1

SECTION 02 41 00

DEMOLITION

PART 1 - GENERAL

A. Complete demolition of built observation deck site elements, including all deck supports and superstructure.

Note: Re-use existing foundation (columns)

1.2 REFERENCES

A. 29 CFR 1926 U.S. Occupational Safety and Health Standards;

current edition.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.1 GENERAL PROCEDURES AND PROJECT CONDITIONS

A. Comply with applicable codes and regulations for demolition operations and safety of adjacent structures and the public.

1. Obtain required permits.

2. Use of explosives is not permitted.

3. Take precautions to prevent catastrophic or uncontrolled collapse of structures to be removed; do not allow worker or public access within range of potential collapse of unstable structures.

4. Provide, erect, and maintain temporary barriers and security devices.

5. Conduct operations to minimize effects on and interference with adjacent structures and occupants.

6. Do not close or obstruct roadways or sidewalks without C.O.R. permission.

B. Do not begin removal until receipt of notification to proceed from US FOREST SERVICE.

C. Protect existing structures and other elements that are not to be removed.

1. Provide bracing and shoring.

2. Prevent movement or settlement of adjacent structures.

3. Stop work immediately if adjacent structures appear to be in danger.

D. If hazardous materials are discovered during removal operations, stop work and notify US

FOREST SERVICE and US FOREST SERVICE; hazardous materials include regulated asbestos containing materials, lead, PCB's, and mercury.

3.2 DEBRIS AND WASTE REMOVAL

A. Remove debris, junk, and trash from site.

B. Leave site in clean condition, ready for subsequent work.

C. Clean up spillage and windblown debris from public and private lands.

CONCRETE FORMWORK 03 10 00 - 1

SECTION 03 10 00

CONCRETE FORMWORK

A. Formwork for cast-in-place concrete, with shoring, bracing and anchorage.

B. Form stripping.

1.2 REFERENCES

A. ACI 117 Standard Specifications for Tolerances for Concrete Construction and Materials;

2006. B.ACI 301 Specifications for Structural Concrete for Buildings; American Concrete Institute International; 2005.

B. Product Data: Provide data on void form materials and installation requirements.

1.4 DELIVERY, STORAGE, AND PROTECTION

A. Deliver void forms and installation instructions in manufacturer's packaging.

B. Store void forms off ground in ventilated and protected manner to prevent deterioration from moisture.

2.1 FORMWORK - GENERAL

A. Provide concrete forms, accessories, shoring, and bracing as required to accomplish cast-in-place concrete work.

B. Design and construct to provide resultant concrete that conforms to design with respect to shape, lines, and dimensions.

C. Comply with applicable State and local codes with respect to design, fabrication, erection, and removal of formwork.

2.2 PREFABRICATED FORMS

A. Void Forms: Moisture resistant treated paper faces, biodegradable, structurally sufficient to support weight of wet concrete mix until initial set; 2 inches thick. Provide forms manufactured by Sonotube or approved equal.

A. Verify lines, levels and centers before proceeding with formwork. Ensure that dimensions agree with drawings.

3.2 EARTH FORMS

A. Earth forms are not permitted.

CONCRETE FORMWORK 03 10 00 - 2

3.3 ERECTION FORMWORK

A. Erect formwork, shoring and bracing to achieve design requirements, in accordance with requirements of ACI 301.

B. Provide bracing to ensure stability of formwork. Shore or strengthen formwork subject to overstressing by construction loads.

C. Install void forms in accordance with manufacturer's recommendations. Protect forms from moisture or crushing.

3.4 FORM REMOVAL

A. Do not remove forms or bracing until concrete has gained sufficient strength to carry its own weight and imposed loads.

CONCRETE REINFORCEMENT 03 20 00 - 1

SECTION 03 20 00

CONCRETE REINFORCEMENT

A. SECTION 03 10 00 Concrete Forms and Accessories.

B. SECTION 03 30 00 Cast in Place Concrete.

A. ACI 301 Specifications for Structural Concrete for Buildings; American Concrete Institute International;

2005.

B. ACI SP66 ACI Detailing Manual; American Concrete Institute International; 2004.

C. ASTM A 82/A 82M Standard Specification for Steel Wire, Plain, for Concrete Reinforcement; 2005a.

D. ASTM A 996/A 996M Standard Specification for Rail Steel and Axle-Steel Deformed Bars for Concrete Reinforcement; 2006a.

A. See SECTION 01 30 00, Administrative Requirements, for submittal procedures.

B. Shop Drawings: Comply with requirements of ACI SP- 66. Include bar schedules, shapes of bent bars, spacing of bars, and location of splices.

C. Manufacturer's Certificate: Certify that reinforcing steel and accessories supplied for this project meet or exceed specified requirements.

PART 2 – PRODUCTS

2.1 REINFORCEMENT

A. Reinforcing Steel: Deformed bars, ASTM A 996/A 996M Grade 40 (280), Type A.

B. Stirrup Steel: ASTM A 82/A 82M steel wire, unfinished.

C. Reinforcement Accessories:

1. Tie Wire: Annealed, minimum 16 gage.

3.1 PLACEMENT

A. Place, support and secure reinforcement against displacement. Do not deviate from required position.

CAST-IN-PLACE CONCRETE 03 30 00 - 1

SECTION 03 30 00

CAST-IN-PLACE CONCRETE

A. Concrete reinforcement.

B. Joint devices associated with concrete work.

C. Concrete curing.

A. ACI 211.1 -Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete; American Concrete Institute International; 1991 (Reapproved 2002).

B. ACI 301 -Specifications for Structural Concrete for Buildings; American Concrete Institute International; 2005.

C. ACI 304R -Guide for Measuring, Mixing, Transporting, and Placing Concrete; American

Concrete Institute International; 2000.

D. ACI 308R Guide to Curing Concrete; American Concrete Institute International; 2001.

E. ACI 318 -Building Code Requirements for Structural Concrete and Commentary; American Concrete Institute International; 2005.

F. ASTM A 615/A 615M -Standard Specification for Deformed and Plain Billet-Steel Bars for

Concrete Reinforcement; 2007.

G. ASTM C 33 Standard Specification for Concrete Aggregates; 2003.

H. ASTM C 39/C 39M -Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens; 2005.

I. ASTM C 150 Standard Specification for Portland Cement; 2005.

J. ASTM C 173/C 173M -Standard Test Method for Air Content of Freshly Mixed Concrete by the

Volumetric Method; 2001.

K. ASTM C 260 Standard Specification for Air Entraining Admixtures for Concrete; 2006.

L. ASTM C 330 Standard Specification for Lightweight Aggregates for Structural Concrete; 2005.

M. ASTM C 685/C 685M -

Standard Specification for Concrete Made by Volumetric Batching and Continuous Mixing; 2001.

N. ASTM C 881/C 881M Standard Specification for Epoxy Resin Base Bonding Systems for Concrete; 2002.

O. ASTM C 1107/C 1107M -Standard Specification for Packaged Dry, Hydraulic-Cement Grout (Nonshrink);

2007.

CAST-IN-PLACE CONCRETE 03 30 00 - 2

B. Product Data: Submit manufacturers' data on manufactured products showing compliance with specified requirements.

1.4 QUALITY ASSURANCE

A. Perform work of this SECTION in accordance with ACI 301 and ACI 318.

2.1 FORMWORK

A. Comply with requirements of SECTION 03 10 00.

2.2 REINFORCEMENT

A. Reinforcing Steel: ASTM A 615/A 615M Grade 60 (420).

1. Type: Deformed billet steel bars.

2. Finish: Unfinished, unless otherwise indicated.

B. Reinforcement Accessories:

1. Tie Wire: Annealed, minimum 16 gage.

2. Chairs, Bolsters, Bar Supports, and Spacers: Sized and shaped for adequate support of reinforcement during concrete placement.

3. Provide stainless steel, galvanized, plastic, or plastic coated steel components for placement within 1--1/2 inches of weathering surfaces.

2.3 CONCRETE MATERIALS

A. Cement: ASTM C 150, Type I Normal Portland type.

B. Fine and Coarse Aggregates: ASTM C 33.

C. Lightweight Aggregate: ASTM C 330.

D. Water: Clean and not detrimental to concrete.

2.4 CHEMICAL ADMIXTURES

A. Do not use chemicals that will result in soluble chloride ions in excess of 0.1 percent by weight of cement.

B. Air Entrainment Admixture: ASTM C 260.

2.5 ACCESSORY MATERIALS

A. Chemical Hardener: Fluosilicate solution designed for densification of cured concrete slabs.

B. NonShrink Grout: ASTM C 1107/C 1107M; premixed compound consisting of non-metallic aggregate, cement, water reducing and plasticizing agents.

1. Minimum Compressive Strength at 48 Hours: 2,400 psi.

2. Minimum Compressive Strength at 28 Days: 7,000 psi.

2.6 BONDING AND JOINTING PRODUCTS

A. Epoxy Bonding System: Complying with ASTM C 881/C 881M and of Type required for specific application.

CAST-IN-PLACE CONCRETE 03 30 00 - 3

2.7 CONCRETE MIX DESIGN

A. Proportioning Normal Weight Concrete: Comply with ACI 211.1 recommendations.

B. Concrete Strength: Establish required average strength for each type of concrete on the basis of field experience or trial mixtures, as specified in ACI 301.

1. For trial mixtures method, employ independent testing agency acceptable to US FOREST

SERVICE for preparing and reporting proposed mix designs.

C. Admixtures: Add acceptable admixtures as recommended in ACI 211.1 and at rates recommended by manufacturer.

D. Normal Weight Concrete:

1. Compressive Strength, when tested in accordance with ASTM C 39/C 39M at 28 days: 3,000 psi.

2. WaterCement Ratio: Maximum 40 percent by weight.

3. Total Air Content: 4 percent, determined in accordance with ASTM C 173/C 173M.

4. Maximum Slump: 3 inches.

5. Maximum Aggregate Size: 5/8 inch.

E. Structural Lightweight Concrete:

2.8 MIXING

A. On Project Site: Mix in drum type batch mixer, complying with ASTM C 685. Mix each batch not less than 1-1/2 minutes and not more than 5 minutes.

A. Verify lines, levels, and dimensions before proceeding with work of this SECTION.

A. Formwork: Comply with requirements of ACI 301. Design and fabricate forms to support all applied loads until concrete is cured, and for easy removal without damage to concrete.

B. Verify that forms are clean and free of rust before applying release agent.

C. Coordinate placement of embedded items with erection of concrete formwork and placement of form accessories.

D. Where new concrete is to be bonded to previously placed concrete, prepare existing surface by cleaning with steel brush and applying bonding agent in accordance with manufacturer's instructions.

1. Use epoxy bonding system for bonding to damp surfaces, for structural load-bearing applications, and where curing under humid conditions is required.

E. In locations where new concrete is doweled to existing work, drill holes in existing concrete, insert steel dowels and pack solid with non-shrink grout.

3.3 INSTALLING REINFORCEMENT

A. Comply with requirements of ACI 301. Clean reinforcement of loose rust and mill scale, and accurately position, support, and secure in place to achieve not less than minimum concrete coverage required for protection.

3.4 PLACING CONCRETE

A. Place concrete in accordance with ACI 304R.

CAST-IN-PLACE CONCRETE 03 30 00 - 4

B. Notify US FOREST SERVICE COR not less than 24 hours prior to commencement of placement operations.

C. Ensure reinforcement, inserts, water stops, embedded parts, and formed construction joint devices will not be disturbed during concrete placement.

D. Install joint devices in accordance with manufacturer's instructions.

3.5 CONCRETE FINISHING

A. Repair surface defects, including tie holes, immediately after removing formwork.

B. Unexposed Form Finish: Rub down or chip off fins or other raised areas 1/4 inch or more in height.

C. Exposed Form Finish: Rub down or chip off and smooth fins or other raised areas 1/4 inch or more in height. Provide finish as follows:

3.6 CURING AND PROTECTION

A. Comply with requirements of ACI 308. Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury.

B. Maintain concrete with minimal moisture loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete.

1. Normal concrete: Not less than 7 days.

2. High early strength concrete: Not less than 4 days.

3.7 DEFECTIVE CONCRETE

A. Defective Concrete: Concrete not conforming to required lines, details, dimensions, tolerances or specified requirements.

B. Repair or replacement of defective concrete will be determined by the US FOREST SERVICE.

The cost of additional testing shall be borne by Contractor when defective concrete is identified.

C. Do not patch, fill, touch-up, repair, or replace exposed concrete except upon express direction of US FOREST SERVICE for each individual area.

3.8 SCHEDULE CONCRETE TYPES AND FINISHES

A. Wall: 3,000 psi 28 day concrete, form finish with honeycomb filled surface.

UNIT MASONRY 04 20 00 - 1

SECTION 04 20 00

UNIT MASONRY

A. Concrete Block.

B. Mortar and Grout.

C. Reinforcement and Anchorage.

D. Lintels.

E. Accessories.

1.2 RELATED REQUIREMENTS

A. Section 04 43 00 Stone Masonry Veneer: Stone bonded to masonry backup.

B. Section 05 50 00 Metal Fabrications: Loose steel lintels.

C. Section 07 90 05 Joint Sealers: Backing rod and sealant at control and expansion joints.

1.3 REFERENCE STANDARDS

A. ACI 530/ASCE 5/TMS 402 Building Code Requirements for Masonry Structures; American

Concrete Institute International; 2005.

B. ASTM A 82/A 82M Standard Specification for Steel Wire, Plain, for Concrete Reinforcement;

2007.

C. ASTM A 153/A 153M Standard Specification for Zinc Coating (Hot Dip) on Iron and Steel

Hardware; 2005.

D. ASTM A 615/A 615M Standard Specification for Deformed and Plain Billet Steel Bars for

Concrete Reinforcement; 2007.

E. ASTM C 90 Standard Specification for Loadbearing Concrete Masonry Units; 2006b.

F. ASTM C 91 Standard Specification for Masonry Cement; 2005.

G. ASTM C 144 Standard Specification for Aggregate for Masonry Mortar; 2004.

H. ASTM C 150 Standard Specification for Portland Cement; 2007.

I. ASTM C 207 Standard Specification for Hydrated Lime for Masonry Purposes; 2006.

J. ASTM C 270 Standard Specification for Mortar for Unit Masonry; 2007a.

K. ASTM C 404 Standard Specification for Aggregates for Masonry Grout; 2007.

L. ASTM C 476 Standard Specification for Grout for Masonry; 2008.

M. ASTM C 780 Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry; 2008a.

N. IMIAWC (CW) Recommended Practices & Guide Specifications for Cold Weather

Masonry Construction; International Masonry Industry All-weather Council; 1993.

O. IMIAWC (HW) Recommended Practices & Guide Specifications for Hot Weather

Masonry Construction; International Masonry Industry All-weather Council; current edition.

1.4 SUBMITTALS

A. See Section 01 30 00 Administrative Requirements, for submittal procedures.

B. Product Data: Provide data for masonry units, fabricated wire reinforcement, and mortar.

UNIT MASONRY 04 20 00 - 2

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver, handle, and store masonry units by means that will prevent mechanical damage and contamination by other materials.

1.6 ENVIRONMENTAL REQUIREMENTS

A. Cold and Hot Weather Requirements: Comply with requirements of ACI 530.1/ASCE

6/TMS 602 or applicable building code, whichever is more stringent.

2.1 CONCRETE MASONRY UNITS

A. Concrete Block: Comply with referenced standards and as follows:

1. Size: Standard units with nominal face dimensions of 16 x 8 inches and nominal depth of 8 inches.

2. Load Bearing Units: ASTM C 90, normal weight.

a. Hollow block.

2.2 MORTAR AND GROUT MATERIALS

A. Masonry Cement: ASTM C 91, Type M.

B. Portland Cement: ASTM C 150, Type I.

1. Hydrated Lime: ASTM C 207, Type S.

2. Grout Aggregate: ASTM C 404.

C. Water: Clean and potable.

D. Accelerating Admixture: Non-chloride type for use in cold weather.

2.3 REINFORCEMENT AND ANCHORAGE

A. Manufacturers of Joint Reinforcement and Anchors:

1. DurOWal: www.durowal.com.

2. Substitutions: See Section 01 16 00 Product Requirements.

B. Reinforcing Steel: ASTM A 615/A 615M Grade 60 (420) deformed billet bars; uncoated.

C. Single Wythe Joint Reinforcement: Truss type; ASTM A 82/A 82M steel wire, hot dip galvanized after fabrication to ASTM A 153/A 153M, Class B; 0.1483 inch side rods with

0.1483 inch cross rods; width as required to provide not more than 1 inch and not less than 1/2 inch of mortar coverage on each exposure.

2.4 ACCESSORIES

A. Preformed Control Joints: Rubber material. Provide with corner and tee accessories, fused joints.

B. Cleaning Solution: Nonacidic, not harmful to masonry work or adjacent materials.

2.5 MORTAR AND GROUT MIXES

A. Mortar for Unit Masonry: ASTM C 270, using the Proportion Specification.

1. Masonry below grade and in contact with earth: Type S.

2. Exterior, loadbearing masonry: Type N.

B. Grout: ASTM C 476. Consistency required to fill completely volumes indicated for grouting;

http://www.durowal.com/

UNIT MASONRY 04 20 00 - 3

fine grout for spaces with smallest horizontal dimension of 2 inches or less; coarse grout for spaces with smallest horizontal dimension greater than 2 inches.

C. Mixing: Use mechanical batch mixer and comply with referenced standards.

A. Verify that field conditions are acceptable and are ready to receive masonry.

B. Verify that related items provided under other sections are properly sized and located.

C. Verify that built-in items are in proper location, and ready for roughing into masonry work.

A. Direct and coordinate placement of metal anchors supplied for installation under other sections.

B. Provide temporary bracing during installation of masonry work. Maintain in place until building structure provides permanent bracing.

3.3 COURSING

A. Establish lines, levels, and coursing indicated. Protect from displacement.

B. Maintain masonry courses to uniform dimension. Form vertical and horizontal joints of uniform thickness.

C. Concrete Masonry Units:

1. Bond: Running.

2. Coursing: One unit and one mortar joint to equal 8 inches.

3. Mortar Joints: Concave.

3.4 PLACING AND BONDING

A. Lay solid masonry units in full bed of mortar, with full head joints, uniformly jointed with other work.

B. Lay hollow masonry units with face shell bedding on head and bed joints.

C. Buttering corners of joints or excessive furrowing of mortar joints is not permitted.

D. Remove excess mortar and mortar smears as work progresses.

E. Interlock intersections and external corners.

F. Do not shift or tap masonry units after mortar has achieved initial set. Where adjustment must be made, remove mortar and replace.

G. Perform job site cutting of masonry units with proper tools to provide straight, clean, unchipped edges. Prevent broken masonry unit corners or edges.

3.5 WEEPS/CAVITY VENTS

A. Install weeps in cavity walls at 24 inches on center horizontally above through wall flashing.

3.6 CAVITY MORTAR CONTROL

A. Do not permit mortar to drop or accumulate into cavity air space or to plug weep/cavity vents.

UNIT MASONRY 04 20 00 - 4

3.7 REINFORCEMENT AND ANCHORAGE GENERAL

A. Unless otherwise indicated on drawings or specified under specific wall type, install horizontal joint reinforcement 16 inches on center.

3.8 REINFORCEMENT AND ANCHORAGE SINGLE WYTHE MASONRY

A. Install horizontal joint reinforcement 16 inches on center.

B. Place continuous joint reinforcement in first and second joint below top of walls.

C. Lap joint reinforcement ends minimum 6 inches.

3.9 GROUTED COMPONENTS

A. Support and secure reinforcing bars from displacement. Maintain posit ion within 1/2 inch of dimensioned position.

B. Place and consolidate grout fill without displacing reinforcing.

3.10 CONTROL AND EXPANSION JOINTS

A. Install pre-formed control joint device in continuous lengths. Seal butt and corner joints in accordance with manufacturer's instructions.

3.11 BUILT-IN WORK

A. Leave Blank

3.12 TOLERANCES

A. Maximum Variation from Unit to Adjacent Unit: 1/16 inch.

B. Maximum Variation from Plane of Wall: 1/4 inch in 10 ft and 1/2 inch in 20 ft or more.

C. Maximum Variation from Level Coursing: 1/8 inch in 3 ft and 1/4 inch in 10 ft; 1/2 inch in 30 ft.

D. Maximum Variation of Joint Thickness: 1/8 inch in 3 ft.

3.13 CUTTING AND FITTING

A. Obtain approval prior to cutting or fitting masonry work not indicated or where appearance or strength of masonry work may be impaired.

3.14 CLEANING

A. Remove excess mortar and mortar droppings.

B. Replace defective mortar. Match adjacent work.

C. Clean soiled surfaces with cleaning solution.

3.15 PROTECTION

A. Without damaging completed work, provide protective boards at exposed external corners that are subject to damage by construction activities.

STONE MASONRY FOR SITE FEATURES 04 43 00 - 1

SECTION 04 43 00

STONE MASONRY FOR SITE FEATURES

A. Section includes the following applications of stone masonry:

1. Adhered to unit masonry backup.

A. Product Data: For each type of product indicated.

1. For stone varieties proposed for use on Project, include test data indicating compliance with physical properties required by referenced ASTM standards.

B. Samples:

1. For each stone type indicated.

2. For each color of mortar required.

1.3 PROJECT CONDITIONS

A. Protection of Stone Masonry: During construction, cover tops of walls, projections, and sills with waterproof sheeting at end of each day's work.

B. Cold Weather Requirements: Do not use frozen materials or materials mixed or coated with ice or frost. Do not build on frozen substrates. Comply with cold weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.

1. Cold Weather Cleaning: Use liquid cleaning methods only when air temperature is 40 deg F

(4 deg C) and above and will remain so until masonry has dried.

C. Hot Weather Requirements: Comply with hot weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.

2.1 MORTAR MATERIALS

A. Portland cement: ASTM C 150, Type I or II, except Type III may be used for cold weather construction. Provide natural color as required to produce mortar color indicated.

B. Hydrated Lime: ASTM C 207, Type S.

C. Masonry Cement: ASTM C 91.

D. Mortar Pigments: Natural and synthetic iron oxides and chromium oxides, compounded for use in mortar mixes. Use only pigments with a record of satisfactory performance in stone masonry mortar.

1. Products: Subject to compliance with requirements, provide one of the following:

a. Davis Colors; True Tone Mortar Colors.

b. Lanxess Corporation; Bayferrox Iron Oxide Pigments.

c. Solomon Colors; SGS Mortar Colors.

d. Substitutions: See 01 60 00 product requirements.

E. Colored Cement Product: Packaged blend made from Portland cement and lime or masonry cement and mortar pigments, all complying with specified requirements, and containing no other ingredients.

STONE MASONRY FOR SITE FEATURES 04 43 00 - 2

1. Formulate blend as required to produce color indicated or, if not indicated, as selected from manufacturer's standard colors.

2. Products: Subject to compliance with requirements, provide one of the following:

a. Colored Portland cement Lime Mix: 1) Holcim (US) Inc.; Rainbow Mortamix Custom Color Cement/Lime. 2) Lafarge North America; Eaglebond. 3) Lehigh Cement Company; Lehigh Custom Color Portland/Lime Cement. 4) Substitutions: See 01 60 00 product requirements.

b. Colored Masonry Cement: 1) Essroc, Italcementi Group; BrixmentinColor. 2)

Holcim (US) Inc.; Rainbow Mortamix Custom Color Masonry Cement. 3) Lafarge North America; Magnolia Masonry Cement. 4) Lehigh Cement Company; Lehigh Custom Color Masonry Cement. 5) Substitutions: See 01 60 00 product requirements.

F. Aggregate: ASTM C 144 and as follows:

1. For pointing mortar, use aggregate graded with 100 percent passing No. 16 (1.18mm) sieve.

2. White Aggregates: Natural white sand or ground white stone.

3. Colored Aggregates: Natural colored sand or ground marble, granite, or other sound stone; of color necessary to produce required mortar color.

G. Latex Additive: Manufacturer's standard water emulsion, serving as replacement for part or all of gaging water, of type specifically recommended by latex additive manufacturer for use with field mixed Portland cement mortar bed, and not containing a retarder.

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Boiardi Products Corporation.

b. Bonsal.

c. Bostik Findley Inc.

d. CCure.

e. Custom Building Products.

f. DAP Inc.

g. Laticrete International, Inc.

h. MAPEI Corp.

i. Summitville Tiles, Inc.

j. TEC Specialty Construction Brands; H. B. Fuller Company.

k. Substitutions: See 01 60 00 product requirements.

H. Water: Potable.

2.2 VENEER ANCHORS

A. Materials:

1. Hot Dip Galvanized Steel Wire: ASTM A 82, with ASTM A 153/A 153M, Class B2.

B. Wire Veneer Anchors: Wire ties formed from W1.7 or 0.148inch (3.8mm) diameter, hot dip galvanized steel wire.

C. Corrugated Metal Veneer Anchors: Not less than 0.030inch(0.76mm) thick by 7/8inch(22mm) wide hot dip galvanized steel sheet with corrugations having a wavelength of 0.3 to 0.5 inch (7.6 to 13 mm) and an amplitude of 0.06 to 0.10 inch (1.5 to 2.5 mm).

2.3 MISCELLANEOUS MASONRY ACCESSORIES

A. Weep Hole/Vent Products: Use one of the following unless otherwise indicated:

STONE MASONRY FOR SITE FEATURES 04 43 00 - 3

1. Wicking Material: Absorbent rope, made from cotton or Resistant synthetic fiber, 1/4 to 3/8 inch (6 to 10 mm) in diameter, in length required to produce 2inch (50mm) exposure on exterior and 18 inches (450 mm) in cavity behind stone masonry. Use only for weep holes.

2. Round Plastic Tubing: Medium density polyethylene, 3/8inch (10mm) OD by thickness of stone masonry.

B. Cavity Drainage Material: Free draining mesh, made from polymer strands that will not degrade within the wall cavity.

1. Provide one of the following configurations:

a. Strips, full depth of cavity and 10 inches (250 mm) wide, with dovetail shaped notches 7 inches (175 mm) deep.

b. Strips, not less than 11/2 inches (38 mm) thick and 10 inches (250 mm) wide, with dimpled surface designed to catch mortar droppings.

c. Sheets or strips full depth of cavity and installed to full height of cavity.

d. Sheets or strips not less than 3/4 inch (19 mm) thick and installed to full height of cavity with additional strips 4 inches (100 mm) high at weep holes and thick enough to fill entire depth of cavity.

2. Products: Subject to compliance with requirements, provide one of the following:

a. Advanced Building Products Inc.; Mortar Break Mortar Break II.

b. CavClear/Archovations, Inc.; CavClear Masonry Mat.

c. DurOWal, a Dayton Superior Company; Polytite MortarStop.

d. Mortar Net USA, Ltd.; Mortar Net.

e. Substitutions: See 01 60 00 product requirements.

2.4 MASONRY CLEANERS

A. Proprietary Acidic Cleaner: Manufacturer's standard strength cleaner designed for removing mortar and grout stains, efflorescence, and other new construction stains from stone masonry surfaces without discoloring or damaging masonry surfaces; expressly approved for intended use by cleaner manufacturer and stone producer.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. Diedrich Technologies, Inc.

b. Dominion Restoration Products.

c. EaCo Chem, Inc.

d. Hydrochemical Techniques, Inc.

e. Prosoco, Inc.

f. Substitutions: See 01 60 00 product requirements.

2.5 MORTAR MIXES

A. General: Do not use admixtures unless otherwise indicated.

1. Do not use calcium chloride.

2. Limit cementitious materials in mortar to Portland cement and lime.

3. Mixing Pointing Mortar: Thoroughly mix cementitious and aggregate materials together before adding water. Then mix again, adding only enough water to produce a damp, unworkable mix that will retain its form when pressed into a ball. Maintain mortar in this dampened condition for one to two hours. Add remaining water in small portions until mortar reaches desired consistency. Use mortar within 30 minutes of final mixing; do not re-temper or use partially hardened material.

STONE MASONRY FOR SITE FEATURES 04 43 00 - 4

B.