Attachment_1_-_Pompeys_Pillar_Vault_Toilet_Specifications.pdf

Technical Specifications for

POMPEYS PILLAR VAULT TOILET REPLACEMENT

BUREAU OF LAND MANAGEMENT

BILLINGS FIELD OFFICE

5001 Southgate Dr

Billings, Montana 59101

JANUARY 2024

STATEMENT OF WORK

The Bureau of Land Management Pompeys Pillar National Monument has a need to replace 2 single vault toilets with a new double vault toilet. The vault toilets are located at Pompeys Pillar National Monument near Pompeys Pillar, MT.

The Pompeys Pillar Vault Toilet Replacement work location is approximately 30 miles east of Billings, Montana traveling east on Interstate 94 turning west on to Highway 312 and then north on BLM Pompeys Pillar Access Road to access the Pompeys Pillar National Monument location. The new vault toilet lines, grades, and orientation shall be staked according to the plans prior to commencement of the work.

The contractor shall be responsible for all utility locates both private and public prior to excavating. Notify the Government if any utilities conflict with the staked locations for the vault toilets. A site tour is recommended for the manufacturer to understand the existing site conditions. No monies will be added to the contract due to issues that arise from the Contractors lack of understanding of the existing site conditions.

The Contractor shall be responsible for all facets of the installation of the new vault toilets. This work shall be in accordance with the vault toilet manufacturers recommended installation procedures. This work includes but is not limited to clearing and grubbing, site grading, vault toilet removal, sidewalk removal, vault toilet pad preparation, vault toilet installation, constructing base materials, installing concrete sidewalk, and reclamation in accordance with these drawings and specifications.

The Contractor must work with the Government to establish a construction schedule to assure a smooth installation of the new vault toilet.

TABLE OF CONTENTS

TABLE OF CONTENTS

CONTRACT SPECIFICATIONS PAGES

MT-01009 General Information and Requirements.........1 of 5 MT-01505 Mobilization.................................1 of 1 MT-02213 Site Grading.................................1 of 4 MT-02233 Crushed Aggregate Base.......................1 of 3 MT-02410 Demolition...................................1 of 2 MT-02878 Miscellaneous Project Site Items.............1 of 3 MT-02933 Seeding......................................1 of 3 MT-03306 Minor Concrete ..............................1 of 7 MT-03400 Precast Concrete Vault Toilet................1 of 7

CONTRACT DRAWINGS

Cover Sheet...........................................1 of 6 Project Maps..........................................2 of 6 Demolition Plan.......................................3 of 6 Site Plan.............................................4 of 6 Vault Toilet Details..................................5 of 6 Concrete/Grading Details..............................6 of 6

SECTION MT-01009

GENERAL INFORMATION AND REQUIREMENTS

MT-01009-1

PART 1: GENERAL

1.1 SUMMARY:

A. Description of Work: Furnishing labor, equipment, supplies, and materials to install a double vault concrete toilet and concrete pavement at the Bureau of Land Management (BLM) Pompeys Pillar National Monument (PPNM) (location shown on Drawings). Work includes but is not limited to site grading, demolition, embankment, constructing base materials, installing double vault concrete toilet, and installing concrete sidewalk in accordance with these drawings and specifications.

B. Location: Work under this Contract is located at Pompeys Pillar National

Monument. Pompeys Pillar National Monument is located approximately 1 mile Northwest of I-94 Exit 23 off Hwy 312. The work location is shown on the drawings.

C. Work Schedule: Work to begin on October 1st, 2024. The Notice To Proceed will be issued on or before that date indicating that work will begin on October 1st, 2024.

D. Work Area: Work area is located at the BLM Pompeys Pillar National

Monument site. During the time of construction, the construction area will be closed to the public. The contractor is responsible for all necessary temporary barriers and signage to secure the work area and ensure the safety of the public using the site.

1.2 REFERENCES:

A. Referenced Specifications/Standards with Abbreviations and/or Acronyms:

Wherever the following acronyms are used in these specifications or on the drawings, they are to be construed the same as the respective expressions represented. Copies of the referenced specifications/standards referred to herein may be procured by the Contractor from the following:

AASHTO American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 225 Washington, DC 20001

ASTM American Society for Testing and Materials 1916 Race Street Philadelphia, PA 19103

Fed. Spec. Federal Specification/Standard General Services Administration Specifications Branch Room 6039, GSA Building

MT-01009-2

Seventh and D Streets, S.W.

Washington, DC 20407

MDT Standard Specifications for Road and Bridge Construction, 1995 Ed Montana Department of Transportation Contract Plans Section 2701 Prospect Avenue Helena, MT, 59620

MPW Montana Public Works Standard Specifications 1717 11th Ave.

PO Box 4519 Helena, MT 59604

MUTCD Manual on Uniform Traffic Control Devices for Streets and

Highways Superintendent of Documents Government Printing Office Washington, DC 20402

OSHA Occupational Safety and Health Administration's Standards U.S. Department of Labor Occupational Safety and Health Administration Denver Area Office 333 West Colfax Avenue Denver, CO 80204

*Federal Specifications and catalogs may be obtained at Business Service Centers of Regional Offices of the General Services Administration.

(Washington, DC; Boston, MA; New York, NY; Philadelphia, PA; Atlanta, GA;

Chicago, IL; Kansas City, MO; Fort Worth, TX; Denver, CO; San Francisco, CA;

and Auburn, WA.)

1.3 DEFINITIONS:

A. Approvals: Approval of the submittals is an indication that the

Contractor's submittals have been reviewed and that there are no objections, except as noted. Approval of deviations shall apply only to those deviations or omissions from the requirements of the drawings and specifications brought to the Contracting Officer's attention in writing.

After approval of an item, the Contractor may submit a substitute for approval when the approved item cannot be purchased or delivered in time to avoid delay in completion of the project.

1.4 SUBMITTAL:

A. Scope: Submittal shall be based on the requirements listed in these contract sections.

B. Requirements: For required submittals, allow at least 3 working days for review. Submittal shall be delivered to the Government for review.

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C. Identification of Submittal: Completely identify each submittal by showing at least the following information:

1. Name and address of submitter, plus name and telephone number of the individual to contact for further information.

2. Name of project as it appears in these specifications.

3. Contract number, drawing number, and specification section number to which the submittal applies.

4. Whether this is an original submittal or re-submittal.

5. Each item shall note the manufacturer's name and address.

1.5 QUALITY ASSURANCE:

A. Codes and Standards: The work shall comply with codes and standards applicable to each type of work and as listed in the individual sections of these specifications. This Contract incorporates materials, applications, and tests by reference, with the same force and effect as when they were given in full text.

B. Conflict: Where a conflict occurs between reference documents and project specifications, the project specifications shall govern.

C. Measurements: See pay item details for described units and measurement methods.

1.6 DELIVERY, STORAGE, AND HANDLING:

A. Delivery: The Contractor shall protect products, incorporated into the work, from damage while in transit to the site. Products must be delivered in original unopened containers with manufacturer's name and brand designation and contents legibly indicated. The containers shall bear the referenced specification number, type, and class as applicable.

B. Storage: The Contractor shall provide temporary storage facilities for products complying with manufacturer's recommendations, which will protect them from damage until installation on the project and final acceptance.

The storage area shall permit access for inspection and handling.

C. Handling: The Contractor shall load and unload products in such a manner that protects them from damage until installation on the project.

1.7 PROJECT/SITE CONDITIONS:

A. Access to the Work: The work site access is provided by State and County

Road systems, as well as the Construction Access Route shown in the Drawings.

B. Environmental Considerations: The aesthetic values of the site and surrounding area are of prime importance. The Contractor shall take all care necessary to preserve all plant life and other natural features. Any surface damage outside the staked area shall be corrected by the Contractor at his expense. Any damage to existing State, County, or local

MT-01009-4

roads, used to transport materials to the project, shall be corrected by the Contractor at his expense.

C. Construction facilities: Do not park vehicles or equipment or store materials on private property without written permission from the property owner. Bureau of Land Management will permit a staging area located adjacent to the work location.

1.8 SEQUENCING AND SCHEDULING:

A. Work Schedule: The schedule shall be submitted at the pre-work conference. When requested, the Contractor shall submit an updated schedule within 3 calendar days.

PART 2: PRODUCTS

(There are no applicable requirements.)

PART 3: EXECUTION

3.1 PROJECT MEETINGS:

A. Pre-Work Conference:

1. Notification: A pre-work conference will be held prior to the start of work. The Contractor will be notified in advance of meeting time, date, and place. The purpose will be to review required work, project drawings and specifications, submittals, construction schedules, payroll and payments, and administrative provisions of the Contract.

2. Attendance: The Contractor, subcontractors, and the persons responsible for coordination of the work shall be present at the meeting.

3. Presentation: The Contractor shall be prepared to summarize and explain procedures planned for the project and present the submittals requested in the specifications.

B. Progress Meetings:

1. Location: Meetings shall be held at the project site or as determined by the Contracting Officer.

2. Notification: Meetings may be called by either the Government or the

Contractor. The request shall state who should attend.

C. Final Inspection:

1. Location: Meeting shall be held at the project site, or as determined by the Contracting Officer.

2. Notification: The Contractor shall notify the Government, in writing, at least 5 working days before the completion date so the Government can schedule final inspection.

MT-01009-5

3. Attendance: The Contractor shall require the superintendent to be present during this inspection.

3.2 CLEANUP:

A. Waste Removal: The Contractor shall at all times keep the premises free from accumulation of waste materials or rubbish caused by his employees or work. At the completion of the work, the Contractor shall remove all such materials from the work site. Excess concrete shall be removed from the project site.

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT:

A. Units: The work described in this section will not be measured for payment.

4.2 BASIS OF PAYMENT:

A. Payment: No direct payment for the work described under this section will be made. Consideration for this item shall be included in the bid price for other items of the Contract.

END OF SECTION

SECTION MT-01505

MOBILIZATION

MT-01505-1

A. Section Includes: Preparatory work and operations, including those necessary to the movement of personnel, equipment, supplies and incidentals to the project site; and for other work and operations which must be performed or costs incurred prior to beginning work on the various items on the project site.

(There are no applicable requirements.)

PART 3: EXECUTION

(There are no applicable requirements.)

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT:

A. Units: Progress payments will be made as follows:

1. When 5 percent of the original contract amount is earned from other bid items, 50 percent of the amount bid for mobilization or 5 percent of the original contract amount, whichever is lesser, will be paid.

2. When 10 percent of the original contract amount is earned from other bid items, 100 percent of the amount bid for mobilization or 10 percent of the original contract amount, whichever is lesser, will be paid.

3. Upon completion of work for the project, payment of the amount bid for mobilization in excess of 10 percent of the original contract amount, will be paid.

4. The total sum of all payments shall not exceed the original contract amount bid for mobilization, regardless of the fact that the contractor may have shut down the work on the project or moved equipment away from the project and then back again.

4.2 BASIS OF PAYMENT:

A. Payment: Prices and payment will be full compensation for the work described in this section. No modification and adjustments shall be allowed for costs and changes to mobilization despite changes in fuel or transportation costs. Payment will be made under:

Pay Item Pay Unit

MT-01505(1) Mobilization . . . . . . . . . . . . . . . . . . . . . Lump Sum

SECTION MT-02213

SITE GRADING

MT-02213-1

A. Section Includes: All Earthwork required to complete the subgrade sections of the project including clearing and grubbing, excavation, embankment, grading, dig-out, and compacting related work to prepare and restore the site as indicated and as shown on the drawings.

A. American Association of State Highway and Transportation Officials

AASHTO T 99-86 Moisture-Density Relations of Soils Using a 5.5-lb (2.5

kg) Rammer and a 12-inch (305 mm) Drop

AASHTO T 239-86 Moisture Content of Soil and Soil-Aggregate in Place by

Nuclear Methods (Shallow Depth)

1.3 DEFINITIONS:

A. Site Grading: All Earthwork required to complete subgrade sections of the

New Vault Toilet Pad and the New Concrete Sidewalk.

B. Excavation: All excavation materials shall be considered as unclassified excavation, regardless of its nature.

C. Embankment: Shall be mineral soil, free from peat, frozen material, brush, trees, roots over 2 inches in diameter, and rocks over 6 inches in greatest diameter, and be obtained from on-site during excavation.

D. Topsoil: Shall be organic soil (identified by the Government) excavated from the New Concrete Sidewalk and New Vault Toilet construction area.

Topsoil shall be stockpiled for reclamation use. Topsoil shall be placed in accordance with these contract specifications and drawings.

E. Waste Excavation: Excavation that is not used for construction of embankments or classified as Topsoil, will be retained by the Government on site, as directed by the Government.

1.4 QUALITY ASSURANCE:

A. Failure Criteria: Not limited to the following:

1. Formation of pools of moisture where positive drainage is indicated on the drawing.

2. Settlement of embankment.

MT-02213-2

3. Flow of moisture toward, or entrapment against, building foundations.

1.5 PROJECT/SITE CONDITIONS:

A. Excess Material:

1. Excavated material suitable for embankment or topsoil shall be stockpiled as directed by the Government. Excess material will be retained by the Government.

2. Excavated material unsuitable for embankment or topsoil shall be wasted at designated waste areas designated by the Government.

3. All oversized rocks removed below subgrade elevations shall be brought back to the original subgrade elevation using excavated material before the use of imported borrow material. Borrow wasting is not permitted.

4. Rocks and boulders greater than 2 feet in diameter shall be separated and set aside at the direction of the Government. All rock removal is considered incidental to site grading.

B. Elevations: Verify the grade elevations existing on the site. Notify the Government immediately if adjustments are required to provide finish elevations indicated or compliance with the Architectural Barriers Act (ABA). Site drainage shall be considered of prime importance.

C. Environmental Conditions: Do not attempt to grade saturated material.

Water dry material to prevent dust.

2.1 MATERIALS:

A. General: See definitions.

PART 3: EXECUTION

3.1 CLEARING AND GRUBBING:

A. Requirements: The area to be excavated shall be thoroughly cleared and stripped of objectionable vegetative matter, brush, trees, stumps, roots, and rocks and shall be removed and disposed of offsite by the Contractor at their expense.

3.2 SCARIFYING:

A. Requirements: Sod and vegetation shall be removed from the surface upon which the fill shall be placed, and the cleared surface shall be completely broken up by scarifying to a minimum depth of 6 inches.

Scarifying furrows shall be a maximum of 3 feet apart and shall be parallel to the center line of the fill. No embankment materials shall be

MT-02213-3

placed until the surface upon which the embankment material shall be placed has been approved.

3.3 PREWATERING:

A. Requirements: Excavation areas may be prewatered before excavating the material. The area to be excavated shall be moistened to the full depth from the surface to the bottom of the excavation. The application of water shall be controlled so that the excavated material will be near the optimum moisture content as specified in paragraph 3.7 A below. When necessary, prewatering shall be supplemented to assure that embankment material and backfill material moisture content comply with paragraph 3.7 A below.

3.4 EXCAVATION:

A. Requirements: Excavation shall be performed in a manner that allows the

Contractor to sort the three excavation classifications Topsoil, Embankment, and Waste. Excess excavation shall be stockpiled.

3.5 INSTALLATION:

A. Topsoil: Excavated and stockpiled.

B. Grades: Grades not otherwise indicated shall be level, or uniform slopes between points where elevations are given, or between such points and existing finished grades. Abrupt change in slopes shall be rounded.

C. Earthfill Placement: Embankment materials used to construct the new sidewalk alignment shall be spread over the full width of the cross section of the embankment to a maximum loose thickness of 6 inches and shall be compacted as specified in paragraph 3.7 A and B before the next layer is spread. The Contractor shall use compaction equipment suitable to the type and depth of material being compacted to obtain the required degree of compaction. The in-place materials shall be free of lenses, pockets, streaks, or layers of materials differing substantially in texture or gradation from the surrounding materials.

D. Disposal of Materials: Excess excavation (Waste Excavation) shall be stockpiled on site as directed by the Government.

E. Use of Subbase Borrow Material: Do not use subbase imported borrow material until after the materials obtained from the required excavation have been placed in the fill, unless otherwise directed by the Government. Imported borrow material shall be placed and compacted according to MT-02233 Subbase Borrow Fill Material.

3.6 FINISHING:

MT-02213-4

A. The new concrete sidewalk and vault toilet pad subgrade shall be finished with equipment capable of shaping and grading the finished surface within the tolerance specified below.

1. The surface will be checked for the required grades with tolerances being ± 5 hundredths of a foot.

3.7 FIELD QUALITY CONTROL:

A. Moisture Content: During watering and compacting of the embankment subgrade, the optimum moisture content (-4 percent to +2 percent), as determined by AASHTO T 99 and AASHTO T 239, shall be maintained by wetting or drying. Contractor is responsible for obtaining a third party to perform tests and submit the results to the Government as directed by the Government, to ensure compliance with this requirement.

B. Compaction: The embankment subgrade, borrow material, and all crushed aggregate base course materials, shall be compacted to a minimum density of 95 percent of the maximum dry density obtained by AASHTO T 99.

Contractor is responsible for obtaining a third party to perform tests and submit the results to the Government as directed by the Government, to ensure compliance with this requirement.

A. Units:

1. Include all materials, labor, equipment and supplies needed to perform all earthwork required to complete subgrade sections of the new concrete sidewalk and vault toilet pad including clearing and grubbing, excess material and stockpiling, excavation, embankment, backfill, and borrow if needed. The work described in this section will be measured and paid for on a lump sum basis for Site Grading.

2. Crushed Aggregate Materials and 3 Inch Minus Pit Run Material installed will be paid for under separate pay items.

4.2 BASIS OF PAYMENT:

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

MT-02213(1) Site Grading. . . . . . . . . . . . . . . . . . . . .Lump Sum

SECTION MT-02233

CRUSHED AGGREGATE BASE

MT-02233-1

A. Section Includes: This work shall include furnishing, placing, and compacting aggregate base course materials on the prepared subgrade of the BLM Pompeys Pillar National Monument new sidewalk alignment to these specifications and to the lines, grades, and thickness as shown on the drawings or as staked in the field.

1.2 REFERENCES

A. American Association of State Highway and Transportation Officials:

AASHTO T 99-86 Moisture-Density Relationship of Soils Using a 5.5-lb

(2.5 kg) Rammer and a 12-inch (305 mm) Drop

AASHTO T 239-86 Moisture Content of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth)

1.3 CERTIFICATE OF CONFORMANCE:

A. Certification: Contractor to submit written certification from the supplier that the Contractor-furnished material to be used on this project conforms to the requirements of this specification section.

Contractor shall include in the submittal, test results from a Certified

Geotechnical Laboratory: Samples shall be obtained from the stockpile of material to be used on this project at the time of Construction for the Crushed Aggregate Base.

1. Sieve Analysis according to AASHTO T 99.

2. Standard Proctor according to AASHTO T 99.

3. Atterburg limits according to ASTM D 4318

4. Percentage of Mechanically Fractured Particles according to Montana Department of Transportation (MDT), MT-217.

2.1 MATERIALS: Shall be in conformance with the following requirements:

A. General: Aggregate material shall consist of hard, durable particles or fragments of slag, stone, or gravel crushed of the required size and grading. Shall be visually free from organic matter and lumps or balls of clay and shall meet the requirements for the grading given.

MT-02233-2

B. Crushed Aggregate Base: Shall meet the following gradation and requirements including added binder or blending material:

Sieve Size Percent Passing

1 inch 100 percent No. 4 30-60 percent No. 10 25-55 percent No. 200 4-20 percent

1. The Maximum liquid limit for the material passing the No. 40 sieve is

35.

2. The Plasticity Index for the material passing the No. 40 sieve may vary between 0 and 6.

3. At least 35 percent by weight of the aggregate retained on the No. 4 sieve must have at least one mechanically-fractured face. Test for determining percentage of mechanically fractured particles shall be according to MDT, MT-217.

3.1 PREPARATION:

A. The subgrade shall be prepared in accordance with Section MT-02213 - Site

Grading.

3.2 INSTALLATION:

A. All aggregate material shall be placed and spread either on the prepared subgrade or prepared subbase in a uniform layer not exceeding 6 inches in compacted depth. The method of dumping and spreading shall be determined by the Contractor. The spread material shall be free of segregation.

3.3 COMPACTION:

A. Each layer of aggregate base shall be compacted to the full width by means of compaction equipment suitable to the type and depth of material being compacted. Compaction of each layer shall continue until density of not less than 95 percent of the maximum dry density determined in accordance with AASHTO T 99, or other approved method, has been achieved.

Contractor is responsible for performing moisture-density tests as needed to ensure compliance with this requirement.

3.4 FINISHING:

A. The final layer of each aggregate base course material shall be finished with equipment capable of shaping and grading the finished surface within the tolerance specified below.

MT-02233-3

1. The surface will be checked for the required grades specified on the drawings with tolerances being ± 3-hundredths of a foot.

1. Crushed Aggregate Base: The work described in this section for this item will be measured and paid for as follows:

a. Crushed Aggregate Base will be measured and paid for by lump sum.

A. Payment: The accepted quantities will be paid for by lump sum. Price and payment shall be full compensation for furnishing and placing all materials, including all labor, equipment, tools, and incidentals necessary to complete the work described in this section. Payment will be made under:

Payment Pay Unit

MT-02233(1) 3/4” Crushed Aggregate Base. . . . . . . . . . . . . . Lump Sum

End of Section

SECTION MT-02410

DEMOLITION

DEMOLITION

MT-02410-1

A. Section Includes: The removal and disposal of two existing vault toilets, existing sidewalk, and other obstructions shown on the drawings, disposal of items indicated, and backfilling cavities left after removal is complete.

1.2 MATERIALS OWNERSHIP:

A. Unless otherwise indicated, demolition waste becomes property of Contractor. It is the responsibility of the contractor to properly dispose of the demolition waste in an approved landfill. Any costs associated with the disposal of the demolition waste are included in the Vault Toilet Removal/Sidewalk Demolition pay item.

B. Historic items, relics, antiques, and similar objects including, but not limited to, cornerstones and their contents, commemorative plaques and tablets, and other items of interest or value to Government that may be uncovered during demolition remain the property of Government.

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

Government.

PART 2: PROJECT CONDITIONS

2.1 WORK LIMITS:

A. Work limits shall be staked by the contractor and control points established by the Government.

2.2 ENVIRONMENTAL CONSIDERATIONS:

A. Use means necessary to prevent dust becoming a nuisance to the public, to neighbors, and to other work being performed on or near the site.

Watering for dust control shall be at no additional cost to the Government.

A. Units: Demolition will be measured and paid for on a lump sum basis.

4.2 BASIS OF PAYMENT:

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

MT-01505(1) Vault Toilet Removal/Sidewalk Demolition . . . . . . . Lump Sum

MT-01505-2

SECTION MT-02878

MISCELLANEOUS PROJECT SITE ITEMS

MT-02878-1

1.1 SUMMARY:

A. Section Includes: Construction staking, excavation, backfill, and compaction for contractor supplied vault toilet, and other appurtenances and miscellaneous work in accordance with the drawings and specifications as staked in the field, and as directed by the Government.

1.2 PROJECT/SITE CONDITIONS:

A. Construction Stipulation:

(There are no applicable requirements).

1.3 SUBMITTALS:

A. Requirements: Contractor shall submit the Manufacturer's Certificate of

Compliance for all Contractor supplied materials. Submittals shall be in accordance with Section 01009 - General Information and Requirements.

2.1 CONTRACTOR-FURNISHED MATERIALS:

A. Concrete Vault Toilet:

1. Double vault concrete toilet, conforming to the requirements of Section MT-03400 Precast Concrete Vault Toilet.

1. Vault Bedding: Shall conform to the requirements of Section MT-02233

Crushed Aggregate Base Materials.

2. Timber Sills: Shall be 4” x 12” x 12’ DF rough sawn timber.

3. Vault Backfill: Shall conform to the embankment material requirements set forth in Section MT-02213 Site Grading.

3. Finish Material: The materials used to finish around the toilet buildings shall be topsoil with grass seed as shown on the drawings and meeting the requirements of Section MT-02933 Seeding.

A. Construction Staking

MT-02878-2

1. It is the responsibility of the contractor to stake the project according to the drawings. There will be at least one control point provided by the Government for the contractor to base the staking. A coordinate point table of the design will be provided by the

3.2 INSTALLATION:

A. Excavation:

1. Concrete Vault Toilet: Perform excavation to the lines, grades, and elevations indicated on the drawings and as staked in the field to allow for safety, placing and inspection. Provide proper depth with allowance made for crushed aggregate base bedding.

B. Bedding:

1. Concrete Vault Toilet: Bedding shall be 3/4-inch crushed aggregate base course in accordance with Section MT-02233 Crushed Aggregate Base Materials. Bedding shall be placed to the depth as shown on the drawings and compacted to 95 percent of the maximum dry density as determined by AASHTO T 99.

a. Timber Sills: Place timber sills in bedding as shown on the drawings, screed level and compact bedding material.

C. Backfill:

1. Concrete Vault Toilet Backfill: Place backfill around vault toilet in compacted lifts no greater than 6 inches thick using native embankment material. Embankment material shall conform to MT-02213 Site Grading.

Backfilling method shall continue until embankment has reached the required elevation.

D. Finishing:

1. Concrete Vault Toilet:

a. Finish slopes around the finished elevation of the concrete slab with 6 inches of topsoil according to the drawings and specifications. Hand rake as necessary to remove excess material and smooth out areas inaccessible to construction equipment and as directed by the Government in the field for a quality, finished appearance.

b. Clean concrete slab of gravel material after finishing; wash and sweep structure prior to final inspection

3.3 PROTECTION:

MT-02878-3

A. Concrete Vault Toilet: Any damage to the toilet structure by the Contractor during backfilling and finishing operations shall be repaired or replaced at no additional cost to the Government.

A. Units: All work required to excavate and construct the subgrade of the toilet pad and vault pit, installation of the timber sills and any other work needed to prepare for the placement of the vault toilet shall be included in this pay item and will be paid for as lump sum under Toilet Pad Preparation.

B. Units: Quantities for the Crushed Aggregate Base Materials used to construct the concrete vault toilet bedding, backfilling and finishing materials are included in the Crushed Aggregate Base Course Materials, and will be paid for under bid item MT-02233 3/4-Inch Crushed Aggregate Base.

C. Units: All work and materials required for staking the project according to the drawings and specifications shall be paid for as lump sum under Construction Staking.

described in this section. Payment will be made under:

MT-02878(1) Toilet Pad Preparation . . . . . . . . . . . . . Lump Sum MT-02878(2) Construction Staking. . . . . . . . . . . . . . . Lump Sum

SECTION MT-02933

SEEDING

MT-02933-1

1.1 SUMMARY:

A. Section Includes: Furnishing labor, equipment, supplies and materials to apply topsoil and native seed to the cut and/or fill slopes of the concrete sidewalk, vault toilet pad, and waste areas.

A. Federal Specifications:

Fed. Spec. JJJ-S-181B Seeds, Agricultural

1.3 SUBMITTALS:

A. General: Submittals shall be according to Section MT-01009 - General

Information and Requirements.

Certificates of Conformance: Submit one copy of written certification from the supplier that they conform to the requirements of this specification section for the following:

1. Imported Topsoil: Contractor shall include test results from a

Certified Geotechnical Laboratory. Sample shall be taken from stockpile of topsoil being used at the time of construction:

a. A loose wet density and a loose dry density of the material according to Jigging method ASTM C 29.

b. Topsoil Composition

PART 2: PRODUCTS

2.1 MATERIALS:

A. Imported Screened Topsoil: Import screened topsoil from off-site sources.

Obtain topsoil from naturally well-drained sites where topsoil occurs at least 4 inches deep; do not obtain from bogs or marshes. Imported screened topsoil shall meet the following requirements in “Screened Topsoil Composition.”

1. Screened Topsoil Composition: Topsoil shall be fertile, friable, free-draining, sandy or silty loam soil. Topsoil shall be screened and free of subsoil, roots, brush, weeds, rocks or stones larger than 2-inches, and other substances detrimental to the development of vegetative growth; topsoil shall be free of contamination by heavy metals including lead and zinc. Moisture content shall not exceed 6 percent. Material shall conform to the following:

MT-02933-2

pH 5.5 to 8.0 Organic Matter, AASHTO 267 3 - 10% Silt 25 - 50% Clay 10 - 30% Sand 20 - 35% Nitrate N (micrograms/gram) Not less than 6.0 Lead Content SW-846 6010 (ICP) Maximum 100 ppm Zinc Content SW-846 6010 (ICP) Maximum 200 ppm

C. Seed Mix: Sun and shade tolerant grass seed, as approved by the

PART 3: EXECUTION

3.1 PREPARATION:

A. Site: Upon completion of construction operations, remove rock, debris, and clods that are 3 inches in diameter or larger within the seeded areas.

3.2 APPLICATION:

A. Topsoil: Spread to a depth of 6 inches over area to be seeded and harrow in areas with a hand rake or as otherwise directed by Government.

B. Grass Seed: Sun and shade tolerant, as approved by the Government.

Contractor to supply and broadcast sun and shade tolerant grass seed as directed by Government in the field.

A. Units: Imported Screened Topsoil will be measured and paid for as follows:

1. Imported Screened Topsoil will be measured and paid for by lump sum.

B. Units: The seed work described in this section will be measured and paid for as follows:

1. Seed will be measured and paid for by lump sum.

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MT-02933(1) Imported Screened Topsoil . . . . . . . . . . . Lump Sum MT-02933(2) Seeding . . . . . . . . . . . . . . . . . . . . Lump Sum

MINOR CONCRETE

MT-03306-1

SECTION MT-03306

A. Section Includes: Concrete, reinforcement, formwork, and joints for the entire project, as specified herein and as shown on the drawings.

B. Related Sections

General Information and Requirements Section MT-01009 Site Grading Section MT-02213 Crushed Aggregate Base Section MT-02233

1.2 SUBMITTALS:

A. Requirements: Contractor shall submit the Manufacturer's Certificate of

Compliance for materials. Submittals shall be in accordance with Section MT-01009 - General Information and Requirements.

B. Mix Design: Submit one copy of the design mix and strength test results for the strength, class, and type of proposed concrete to be used. Mix designs and strength test results shall be prepared by a certified testing laboratory.

C. Certificates of Conformance: Submit one copy of written certification for each load of concrete mix delivered to the job site, certifying that the batch conforms to the requirements of this specification.

D. Product Data: Provide data on the following materials:

1. Portland Cement

2. Aggregates

3. Reinforcing Steel

4. Curing Compound

5. Expansion Joint

6. Admixtures

1.3 QUALITY ASSURANCE:

A. Concrete Work Requirements: All concrete work, including forming and finishing shall be done by a licensed individual or company in the state of Montana for Concrete Services.

B. Perform work in accordance with ACI 302 and ACI 318.

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1. Maintain one copy of each document on site.

C. Obtain cementitious materials from same source throughout.

D. Follow recommendations of ACI 306R when concreting during cold weather.

E. Causes for Rejection: Concrete may be rejected for, but not limited to, the following reasons:

1. Freezing within the first 3 days of placement.

2. Excessive or inadequate slump.

3. Segregation of aggregate or over-vibration resulting in excessive water in the surface of the concrete.

4. Honeycomb over 25 percent of the surface.

5. Voids larger than 2 inches across.

6. Exposed reinforcing steel.

7. Misalignment of concrete.

8. Substandard aggregate in the mix.

F. Test Requirements:

1. Contractor shall make arrangements with a private testing laboratory for samples of concrete to be taken and have tests and reports of the same made and distributed to the Government. A minimum of one set of test cylinders (each set will consist of four cylinders) shall be provided each day concrete is placed. An additional set of test cylinders shall be provided on days the placement exceeds 15 cubic yards. The test cylinders shall be made and cured per ASTM C 31.

Twenty-four hours after pouring, cylinders shall be carefully transported to the testing laboratory for moisture curing. Expense of original sets of tests will be borne by the Contractor. The concrete placement locations of the test cylinders shall be determined by the Government. Test cylinders shall be identified with symbols to indicate the location where the concrete was obtained for the test.

2. Test two cylinders to failure at 7 days and two cylinders to failure at 28 days, per ASTM C 39.

3. A minimum of one Slump, Air Entrainment, and Temperature test shall be conducted for every concrete truck that delivers concrete to the site.

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4. When initial tests show that materials or workmanship did not comply with these specifications, Contractor shall pay for additional testing that may be required to ensure compliance.

1.4 REFERENCES:

A. American Association of State Highway and Transportation Officials

AASHTO T 26 Test for Quality of Water to Be Used in Concrete

B. American Concrete Institute ACI 211.1-97 Standard Practice for Selecting Proportions for

Normal, Heavyweight, and Mass Concrete ACI 302.1R-96 Guide for Concrete Floor and Slab Construction

ACI 305R-99 Hot Weather Concreting ACI 306R-88 Cold Weather Concreting ACI 308-01 Standard Practice for Curing Concrete ACI 315-02 Details and Detailing of Concrete Reinforcement ACI 318-02 Building Code Requirements for Reinforced Concrete ACI 347-78 Recommended Practice for Concrete Formwork

C. American Society for Testing and Materials

ASTM A 185 Standard Specification for Steel Welded Wire

Reinforcement ASTM A 615-82 Deformed and Plain Billet-Steel Bars for Concrete Reinforcement ASTM C 31-83 Making and Curing Concrete Test Specimens in the Field

ASTM C 33-01a Concrete Aggregates ASTM C 39-01 Compressive Strength of Cylindrical Concrete Specimens ASTM C 94-00 Ready-Mixed Concrete ASTM C 143-00 Slump of Portland Cement Concrete ASTM C 150-02 Portland Cement ASTM C 260-01 Air-Entraining Admixtures for Concrete ASTM C 309-98a Liquid Membrane-Forming Compounds for Curing Concrete ASTM D 1751-99 Standard Specification for Preformed Expansion Joint

Filler for Concrete (Nonextruding and Resilient Bituminous Types)

2.1 MATERIALS:

A. Cement: Portland cement, Type IIA, according to ASTM C 150. The use of caked or hardened cement will not be permitted.

B. Water: Potable water shall be used for mixing concrete.

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C. Aggregates: The aggregate shall be hard, durable, uncoated rock according to ASTM C 33.

1. The coarse aggregate shall have a maximum size of 1 inch, and not over 5 percent passing the No. 4 sieve.

2. The fine aggregate shall completely pass the No. 4 sieve with no more than 5 percent passing the No. 100 sieve. The fine aggregate shall contain no silt, loam, clay or organic particles.

D. Concrete Color: Davis Colors, Sandstone #5237

E. Air-Entraining Admixture: ASTM 260. The amount of air shall be 4 to 6 percent when maximum aggregate size is 3/4-inch, and 4.5 to 7.5 percent when maximum aggregate size is 3/8-inch. A variation of plus or minus 1 percent is allowable.

F. Rebar: #4 Rebar, Unit weight: 0.668 pounds per foot, Nominal diameter: 0.5 inches, Nominal area: 0.2 square inches, Grade 60.

G. Dowels: 1/2 inch smooth, Unit weight: 0.668 pounds per foot.

H. Isolation Joint Materials: Preformed filler strips shall be according to

ASTM D 994 and shall be the full width and depth of the joint. Unless otherwise indicated, the material shall be 1/2-inch thick.

2.2 MIXES - CONCRETE:

A. Concrete: Design of mixed concrete shall be according to ASTM C 94 and be designed for a 28-day compressive strength of 4000 psi, and a slump of 2 to 4 inches as determined by ASTM C 143. Concrete shall have pigment admixtures: Davis Sandstone #5237

B. Mixing Materials: Concrete shall be machine mixed. Mixers shall be batched according to their capacity and not overloaded. Mixing of ingredients shall continue for at least 3 minutes. The concrete shall be placed as soon as possible after mixing to prevent cold joints.

2.3 SOURCE QUALITY CONTROL

A. Concrete Testing: Shall be conducted each day there is a pour in the presence of the Government who shall be given 48-hours notice before any test is to be conducted. The Contractor shall pay all fees associated with and make arrangements for a certified, independent testing laboratory to perform the air content tests, compression tests of 3 cylinders and slump tests to substantiate mix designs. Record and distribute the results.

2.4 FORMING:

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Design and construct formwork for exposed concrete surfaces with plywood, metal-framed plywood-faced, or other panel-type materials to provide continuous, straight, smooth, as-cast surfaces. Furnish formwork in largest practicable lengths to minimize the number of joints. Form material shall be of sufficient thickness to withstand pressure of newly placed concrete without bowing or deflection.

2. Concrete surfaces that will be unexposed in the finished structure may be formed with plywood, lumber, metal, or other materials acceptable to the Contracting Officer’s Representative. Provide lumber that is dressed on at least two edges and one side for tight fit.

A. Clearing: Shall be according to Site Grading in Section MT-02213.

B. Subbase Preparation: Subbase and earth walls to be in contact with concrete shall be undisturbed or compacted according to Section MT-02213.

C. Form Construction: ACI 347R. Construct forms to the sizes, shapes, lines, and dimensions shown on the drawings and Manufacturer’s installation instructions, to obtain accurate alignment, location, grades, and level and plumb surfaces in finished structures. The Contractor shall provide construction aids and imbedded items such as anchor bolts.

Fabricate forms for easy removal without hammering or prying against the concrete surfaces. Provide crush plates or wrecking plates if stripping may damage the concrete. Form oil may be applied to facilitate removal of forms. Forms and subbase shall be wet before placement of concrete.

D. Form Inspection: Notify the Contracting Officer Representative 48 hours in advance of concrete placement to allow for inspection of forming and placement of items to be imbedded in the concrete. Excess water shall be removed from the forms before concrete placement.

E. Reinforcing Steel: Accurately position, support, and secure reinforcement steel against displacement. Locate and support reinforcement with bar supports to maintain minimum concrete cover. Workmen are not to walk on reinforcing steel during placement of concrete. Reinforcement shall be inspected by the Contracting Officer prior to concrete being placed.

F. Doweled Joints: Install dowel bars and support assemblies at joints where indicated. Lubricate or asphalt coat one-half of dowel length to prevent concrete bonding to one side of joint.

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3.2 CONCRETE PLACEMENT

A. Mix Design: Concrete shall not be placed until the mix design has been approved by the Contracting Officer Representative.

B. Placement and Consolidation: Concrete shall be placed in lifts with a maximum depth of 18 inches. Each lift shall be adequately vibrated, rodded, or spaded into place to fill voids. Where more than one lift is placed, a vibrator shall be used to consolidate the concrete by penetrating through the upper lift and at least 6 inches into the lower lift. Vibrators shall not be used next to the form or to move concrete.

Concrete shall be deposited as nearly as practical to its final position to avoid flow causing segregation of the aggregate. Concrete shall not be dropped more than 5 feet vertically without the use of a tremie or similar device.

C. Bonding to Existing Concrete: When a bond is desired between a fresh pour of concrete placed against concrete which has set, the surface of the in-place concrete shall be thoroughly cleaned of loose material, and the in-place concrete soaked with water. When no bond is desired, the surface of the existing concrete shall be painted with asphalt or other material to prevent bonding.

D. Concrete Placement Under Adverse Conditions: During hot weather, refer to

ACI 305R. During cold weather, refer to ACI 306R. Materials required for protection shall be on the jobsite before concrete work is started. Do not place concrete on a frozen subgrade or against surfaces having deposits of frost, snow, or ice.

3.3 CONCRETE FINISHING:

A. Concrete Surface Finishes: The top surface of walls and exterior slabs shall be given a wood-float finish after screeding. Concrete requiring skid-resistant finishes shall be broom-finished with horsehair or straw brooms. Interior slabs shall be given a steel-trowel finish unless otherwise indicated on the drawings. Power-trowels may be used. Brooms shall have a minimum width of 18 inches and shall be applied perpendicular to the centerline. Joints and panel borders shall be edged with a metal tool to leave a smooth border on the concrete.

B. Form Removal: Formwork not supporting concrete may be removed after curing at not less than 50 degrees F for 24 hours after placing the concrete, and when curing and protection procedures are followed as specified. The concrete should be sufficiently hard so as not to be damaged by form removal.

C. Concrete Finish Patching: Immediately after form removal, remove minor bulges and projections on exposed concrete by chipping or tooling, and rub or grind the surface. Chip honeycombed or other defective areas to solid

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concrete, cutting edges to right angles with the surface. Brush cavities with a grout of cement and water, and paint with portland cement mortar.

Cure repairs the same as the concrete.

3.4 FIELD QUALITY CONTROL:

A. Testing: Testing shall be conducted in the presence of the Contracting Officer Representative who shall be given 48-hours notice before any test is to be conducted. The Contractor shall make arrangements for a certified, independent testing laboratory to perform the air content tests, 3 - 28-day cylinders, and slump tests to substantiate each days pour. Record and distribute the results.

3.5 PROTECTION:

A. Requirements: During the curing period, protect concrete from load stresses, shock loads, or vibration. Protect surfaces from damage by equipment, other materials, running water, or rain.

3.6 TOLERANCES:

B. Maximum Variation of Surface Flatness: 1/4 inch in 10 feet.

C. Maximum Variation of True Position: 1/4 inch vertical and 1 inch horizontal.

1. Concrete Sidewalk: The work described in this section will be measured and paid for by lump sum. Include the cost of all materials, labor, reinforcing steel, etc., in the unit cost for Concrete Sidewalk.

described in this section. Payment will be made under:

MT-03306(1) Concrete Sidewalk . . . . . . . . . . . . . . . . . .Lump Sum

PRECAST CONCRETE VAULT TOILET

MT-03306-1

SECTION MT-03306

1.1 SECTION REQUIREMENTS:

A. Submittals: Product Data and Shop Drawings.

B. Manufacturer Qualifications:

1. ISO 9001 certified.

2. PCI certified.

3. All drawings to be stamped by professional engineer prior to acceptance.

1.2 REFERENCES:

ASTM C33 Concrete Aggregates ASTM C39 Method of Test for Compressive Strength of Cylindrical Concrete

Specimen ASTM C94 Standard Specification for Ready-Mixed Concrete ASTM C143 Method of Test for Slump of Concrete ASTM C150 Standard Specification for Portland Cement ASTM C172 Standard Practice for Sampling Freshly Mixed Concrete ASTM A185 Standard Specification for Steel Welded Wire Reinforcement, Plain, or Concrete ASTM C192 Method of Making and Curing Test Specimens in the Laboratory ASTM C231 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method ASTM C309 Standard Specifications for Liquid Membrane-Forming Compounds for

Curing Concrete ASTM C494 Standard Specification for Chemical Admixtures for Concrete ASTM A615 Standard Specification for Deformed and Plain Carbon-Steel bars for Concrete Reinforcement ASTM C618 Standard Specification for Coal Fly Ash and Raw or Calcined

Natural Pozzolan for Use in Concrete ASTM C979 Standard Specification for Pigments for Integrally Colored

Concrete ASTM D1557 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort ACI 211.1 Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete ACI 306 Cold Weather Concreting ACI 318 Building Code Requirements Structural Concrete and Commentary

(includes Errata) PCI MNL 116 Quality Control for Plants and Production of Precast

Prestressed Concrete Product

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2.1 PERFORMANCE REQUIREMENTS:

A. Basis of Design: CXT Double Rocky Mountain Double Vault, or approved equal.

B. General: Building shall be manufactured using precast concrete, including for the roof. Structure and accompanying foundation shall be suitable to the region and properties associated with its final placement. Design shall meet Architectural Barriers Act Standards, as well as all other governing accessibility and building code requirements. Vault buildings shall adhere to the following structural load restrictions.

C. Structural Requirements

1. Snow Load: 350 psf.

2. Floor Load: 400 psf.

3. Wind Load: Built to withstand the effects of a 150 miles per hour (3-second gust) wind exposure C.

4. Seismic: Built to withstand a category E earthquake.

D. Additional Design Standards

1. Structure shall incorporate…