Attachment 1 - Specifications.pdf

NATIONAL FORESTS IN NORTH CAROLINA

ARRA PROJECT # CIM-0811-17F

UWHARRIE RANGER DISTRICT

DEFERRED MAINTENANCE

DECEMBER 2009

NFs in NC Engineering and Minerals Facilities Group

SPECIFICATION INDEX

DIVISION 1 - GENERAL REQUIREMENTS

01010 - Summary of Work 01050 - Field Engineering 01300 - Submittals

DIVISION 2 - SITE WORK

02110 – Clearing 02210 - Site Grading 02220 - Structural Excavation 02221 - Trenching, Backfilling and Compaction for Utilities 02250 - Compaction Control and Testing 02400 - Sheeting, Shoring, and Bracing 02540 – Erosion and Sedimentation Control 02821 - Seeding

DIVISION 3 - CONCRETE

03100 - Concrete Formwork 03200 - Concrete Reinforcement 03300 - Cast-in-Place Concrete 03310 - Concrete from Packaged Dry Mix for Minor Structures 03450 - Precast Concrete Vault Toilets

DIVISION 4 - MASONRY

04150 - Masonry Accessories 04220 - Concrete Unit Masonry 04410 - Stone Masonry

DIVISION 5 - METALS

05500 - Metal Fabrications

DIVISION 6 - WOOD AND PLASTICS

06100 – Rough Carpentry 06200 - Finish Carpentry

DIVISION 7 - THERMAL AND MOISTURE

07110 - Membrane Waterproofing 07210 - Building Insulation 07920 - Sealants and Caulking

DIVISION 8 - DOORS AND WINDOWS

08210 - Metal Doors 08710 - Finish Hardware 08840 - Glazing Plastics

DIVISION 9 - FINISHES

09330 - Floor Tile 09800 - Special Wall Covering 09900 - Painting

DIVISION 10 - SPECIALTIES

10800 - Toilet and Bath Accessories

DIVISION 15 - MECHANICAL

15060 - Pipe and Pipe Fittings 15100 - Valves 15254 - Pipe Insulation 15460 - Plumbing Fixtures and Trim

DIVISION 16 - ELECTRICAL

16010 - Basic Electrical Requirements 16100 – Basic Materials and Methods 16500 - Lighting

DIVISION 1 - GENERAL REQUIREMENTES

01010 - Summary of Work 01050 - Field Engineering 01300 - Submittals

SECTION 01010

SUMMARY OF WORK

PART 1 - GENERAL

A. The Contractor is to provide the complete construction of the bath-house as specified herein as shown on the drawings.

B. Permits

The Forest Service is not required to secure approval by the Montgomery County Health Department for the installation of the septic system. The Forest Service will take full responsibility for the inspection of the construction of the septic system.

C. Coordination

1. The installation of secondary electrical services shall be coordinated with Randolph

Electric Membership Corporation. Contact person is Joe Gollus, telephone number (336)-625-5177, or (800)-672-8212.

D. Storage of Materials

1. The Contractor may store materials and equipment at the work site at his own risk. All materials must be kept in an area designated by the C.O. and be neat and orderly.

2. The Contractor shall install barricades or tape barriers around all open excavations and storage areas.

E. Construction Schedule

1. A proposed schedule of work for the project construction shall be submitted to the C.O.

for approval 10 days prior to starting construction.

F. Existing Facilities

1. The Contractor may use the existing vault toilets.

2. The Contractor will be allowed to use electricity free of charge for the construction of this project only.

3. There is potable water at the job site. It is the responsibility of the Contractor to sequence the work so water is available for construction during the life of the Contract.

G. Safety

1. No trenches will be left open overnight.

2. Electrical switches will be locked in the “OFF ” position.

H. Project Closeout

1. Instruction of Government Personnel in Use of Facilities

It is the responsibility of the Contractor to see that the proper manufacturer's representative, subcontractors, contractor's superintendents, etc., are available at completion of the job and before occupancy to provide instructions in the use of all facilities and equipment and to train personnel in the proper use and maintenance of the building, equipment controls, switches, valves, etc.

2. Operating and Maintenance Manuals

The Contractor shall furnish the following:

a. Instructions for maintenance of all systems.

b. Copies of hardware schedule.

c. Shop drawings and brochures on all special items and equipment.

d. Three copies of the complete operating and maintenance manual for mechanical and electrical equipment. The bound manual shall contain the following:

(1) Word description of the systems.

(2) General operating instructions, including copies of posted specific instructions.

(3) Maintenance instructions, followed by tabulated manufacturer's descriptive literature, shop drawings, performance curves and rating data, spare parts lists, and maintenance manuals.

(4) Warranties.

SECTION 01050

FIELD ENGINEERING

A. The locations of all proposed new work relative to existing features are indicated on the construction drawings. Bench marks for vertical control are to be provided by the C.O. The Forest Service will be responsible to stake the building and establish finish floor elevation.

Other construction staking shall be the responsibility of the Contractor. Staking for any part of the work shall be approved by the C.O. prior to commencing construction on that part.

SECTION 01300

SUBMITTALS

A. The Contractor shall be required to furnish the following to the C.O. prior to commencing any work that relates to a respective submittal (three copies of all submittals required).

1. Septic Tank and Siphon Tank - shop drawings approved by Department of Human

Resources, Division of Health Services, Environmental Health Section.

2. Building Submittals:

a. Paints

b. Roofing

c. Finish Hardware

d. Floor and Wall Tile

e. Mechanical and Plumbing Equipment Data and Drawings.

f. Electrical Equipment Data and Drawings

3. Any other equipment that is a substitute for specified equipment.

B. The Contractor shall obtain approval in writing before installation of equipment.

DIVISION 2 - SITE WORK

02110 – Clearing 02210 - Site Grading 02220 - Structural Excavation 02221 - Trenching, Backfilling, and Compacting for Utilities 02250 - Compaction and Testing 02400 - Sheeting, Shoring, and Bracing 02540 – Erosion and Sedimentation Control 02821 - Seeding

SECTION 02110

CLEARING

A. The building will be located on a grass field and tree clearing is not required.

SECTION 02210

SITE GRADING

A. This section covers all required site grading, including excavation and the placement of interior and exterior fills and the final dressing of the site within the construction area.

PART 2 - PRODUCTS

A. Fill Material

1. The material for the interior and exterior fills shall consist of surplus excavated material or imported fill consisting of a mixture of soil, gravel talus rock, disintegrated granite, semi-gravel, sand, caliche, shale, scoria, clinkers, cinders, or other suitable material.

2. The material shall be free from organic vegetative matter.

3. The maximum size of any particle shall not be greater than 3" in diameter.

4. Oversize material may either be removed or broken down to the specified dimension by any method which accomplishes reduction to that size.

5. The removal or the breakdown of oversize material to the specified size shall be done at the material source.

B. Bedding material under concrete slabs shall be NC DOT approved ABC stone.

PART 3 - EXECUTION

A. Strip all vegetation and the upper 8" of the topsoil from the area to be occupied by the building and stockpile.

B. The contractor shall supply all fill material.

C. Excavation shall produce surfaces to line and grade shown on drawings. All excavated areas shall drain.

D. The root structure of all existing trees that are to remain shall not be disturbed. Do not operate heavy equipment within 10' of trees that are to remain.

E. Exterior fills shall be constructed to sections and elevations indicated. Exterior fills shall drain.

F. Compact Earth Fills under all concrete slabs, ramps, and footings.

1. Compaction shall be in accordance with Section 02250, Compaction Control and Testing.

G. When all exterior earthwork is completed, the contractor shall give the entire site a final dressing to assure that all surfaces are in accordance with the elevations indicated on the drawings.

1. Finish grades adjacent to the building shall be sloped as shown on the drawings to provide surface drainage away from the building walls in all directions.

2. Use the topsoil previously stripped from the site for the upper layer of fill for finish grades.

SECTION 02220

STRUCTURAL EXCAVATION

A. This section consists of the necessary excavation for the buildings foundations, septic tanks, siphon manhole and ther structures.

PART 2 - PRODUCTS

A. Silt fence in accordance with Section 02540.

PART 3 - EXECUTION

A. Install silt fences or other means of silt entrapment around all structural excavations.

B. Trenches or foundation pits for structures or structure footings shall be excavated to the lines, grades, and elevations as shown on the drawings. They shall be of size to permit the placing of the full width and length of structure footings or tanks as shown on the drawings.

C. Boulders, logs, or other objectional material encountered in excavation shall be removed.

1. All rock or other hard foundation material shall be cleaned of all loose material, cut to a firm surface, either level, and stepped or serrated as shown on plans or specified herein.

2. All seams or crevices shall be cleaned out and grouted with neat cement grout.

3. All loose, disintegrated rock and thin strata shall be removed.

4. When concrete is to rest on a surface other than rock, special care shall be taken not to disturb the bottom of the excavation.

D. After each excavation is completed, the Contractor shall notify the C.O. to that effect. No concrete shall be placed until after the C.O. has approved the depth of the excavation and the character of the foundation material.

SECTION 02221

TRENCHING, BACKFILLING, AND COMPACTING FOR UTILITIES

A. Work included in this section covers all trenching, backfilling, and compacting for the installation of all utility lines.

PART 2 - PRODUCTS

A. Initial Backfill - imported sand.

B. Subsequent Backfill - excavated material free from rock larger than four inches in greatest dimension, clods, and debris.

C. Plastic identification tape shall be "Dectotape" as manufactured by:

Allen Systems, Inc.

799 Roosevelt Road Glen Ellyn, IL 60737 312/682-1400 or approved equal. All buried utilities shall be identified with appropriate tape.

PART 3 - EXECUTION

A. Trenches shall be excavated through any or all materials regardless of natural substances.

1. A firm, full-length support shall be formed for all underground pipe.

2. If the bottom of any excavation is taken out beyond the elevations shown on the plans, it shall be refilled at the Contractor's expense with initial backfill material compacted to the density of adjacent undisturbed material.

3. Where the excavated material is rock or other unsatisfactory bedding material, the trench shall be excavated below the final grade of the pipe invert a distance of four inches. The trench shall then be backfilled to the grade of the pipe with initial backfill material.

4. The Contractor shall take all precautions to assure that water does not accumulate in trenches while utility lines are being constructed.

5. Any pipe damaged by backfill operations shall be replaced by new pipe.

6. Trenches shall be bedded to the proper elevation for installing the pipe with initial backfill material. All backfill material within six inches of pipe shall be initial backfill material.

7. Initial backfill shall be deposited and compacted to a density equal to or greater than that of the existing soils for all piping. Subsequent backfilling shall not be compacted except for areas within roadways, parking or sidewalks.

8. Compaction shall be accomplished by the use of a mechanical vibrating tamper.

9. All trenches not within roadway areas shall be mounded 4 to 6 inches to allow for settlement.

B. Backfilling shall not be performed on any section of pipeline without prior approval by the

C.O..

C. Areas where utility lines are located within roads, camping sites, or trails shall be dressed and graded to a condition similiar to one prior to the installation of the utility. Restore all drainage structures.

SECTION 02250

COMPACTION CONTROL AND TESTING

A. This section covers all compaction for earth fills under footings, ramps, slabs, walkways, pump tanks, septic tanks, and other backfill as shown on the drawings and specified herein.

PART 2 - PRODUCTS

A. Material used for fills and backfills shall be as described in Section 02210, Site Grading.

PART 3 - EXECUTION

A. The ground on which the fill or backfill material is to be placed shall be firm, dry, unfrozen, and cleared of all debris.

B. Compacted earth fills under concrete slabs, ramps, footings, and walkways shall be placed in approximately 12" lifts and be compacted to a uniform density until no visible settlement occurs.

C. Backfill around structures and supports shall be done in 8" lifts and compacted to a uniform density until no visible settlement occurs.

D. Compaction shall be accomplished by the use of a mechanical compaction equipment and shall continue untion no visual displacement occurs.

E. Compaction testing shall not be required.

SECTION 02400

SHEETING, SHORING, AND BRACING

A. Scope: Includes additional support that the sides of a trench or excavation may require to remain stable during construction operations.

PART 2 - PRODUCTS

A. Timber or metal members used by the Contractor shall provide adequate support of the soils during his work. The Contractor shall be responsible for selection of proper materials to maintain adequate support.

PART 3 - EXECUTION

A. Excavations and sides of trenches shall be supported with adequate materials as necessary for the safety of personnel and protection of the pipeline or sewerage tanks before backfilling.

B. The installation and removal of all lagging, sheeting, shoring, piling, and bracing shall be such to maintain the required trench or excavated section and to maintain the undisturbed state of the soils at and below the bottom of excavation.

C. Sheet piling and timbers in trench excavations shall be withdrawn in a manner to prevent damage to the pipe or tanks.

D. All sheeting and shoring shall be removed when safe to do so.

SECTION 02540

EROSION AND SEDIMENTATION CONTROL

A. This work consists of temporary and permanent measures specified herein, to prevent and control soil erosion and sedimentation.

B. Related Specifications:

1. 02821 – Seeding

PART 2 - PRODUCTS

A. Silt fences shall be prefabricated with 1-1/2" square, hardwood posts, Mirafi Silt Fence, or approved equal.

PART 3 - EXECUTION

A. Prior to the start of construction, the Contractor shall submit to the C.O. for approval, a schedule for temporary and permanent control work for each phase of work.

B. The Contractor shall monitor the performance of all erosion and sediment control practices and make minor adjustments as needed on a day-to-day basis. Silt fences shall be inspected after each rainfall and sediments deposits must be removed when they reach a maximum of 1/3 the height of the fence. Deteriorated or damaged fabrics must be replaced immediately.

C. Temporary controls shall be dismantled and disposed of after the disturbed soil has been re-vegetated.

SECTION 02821

SEEDING

A. This section covers the seeding of all disturbed areas within the construction limits. The work shall include fine grading of the areas, soil preparation, and application of lime, fertilizer, seed, and mulch.

B. Temporary Seeding shall be required between October 1 and March 30. Seeding shall be done in strict accordance with Section 6.10 Temporary Seeding of the NC Erosion and Sedimentation Control Field Manual.

PART 2 - PRODUCTS

A. Temporary Seeding

1. German Millet or Sudangrass, 50 lbs / acre. (May 1 – August 15).

2. Annual Rye applied at 30 lbs / acre. (August 15 – December 31).

B. Permanent Seeding: (April 1 – September 30)

1. Tall Fescue applied at 80 lbs / acre.

2. Centipedegrass, German Millet, Rye Grain applied at 25 lbs / acre.

C. Fertilizer - 10-10-10 mix applied at a rate of 800 – 1200 lbs / acre.

D. Mulching shall be straw applied at a rate of 1-2 tons per acre.

PART 3 - EXECUTION

A. Seeding operations shall be carried out in a timely manner following any and all backfill completion as directed by the C.O..

1. Permanent seeding dates shall be April 1 to September 30.

2. No work requiring erosion and sedimentation controls will be allowed to start until necessary controls for that particular phase of work have been installed as required.

B. All disturbed areas to be seeded shall be graded, leveled, and prepared to receive the grass seed.

C. Application of Lime and Fertilizer - following the grading and leveling operation, lime and fertilizer shall be spread uniformly over the area to be seeded.

D. Seed shall be uniformly sown over the area at the rate specified by hand sowing. The

Contractor may use a hydro-seeding method if approved by the C.O.

E. Pine straw or pine needles shall be uniformly spread over the area at the rate specified.

DIVISION 3 - CONCRETE

03100 - Concrete Formwork 03200 - Concrete Reinforcement 03300 - Cast-in-Place Concrete 03310 - Concrete from Packaged Dry Mix for Minor Structures 03450 - Precast Concrete Vault Toilets

SECTION 03100

CONCRETE FORMWORK

A. This section covers all formwork, expansion joints, and related accessories.

PART 2 - PRODUCTS

A. Forms shall be wood, plywood, hardboard, or metal and shall be approved by the C.O..

B. Form oil shall be nonstaining type.

C. Expansion joint filler shall be pressure treated Southern Yellow Pine boards. Treatment shall be “ground contact”.

PART 3 - EXECUTION

A. Forms shall be built tight, in proper alignment and adequate to resist the stresses of concrete placement without deformation.

B. Forms shall be constructed to produce the required concrete surface.

C. Expansion and contraction joints shall be formed as indicated on the drawings.

D. Control joints shall be saw cut at the locations shown on the drawings. Joints shall be 1/5 the depth of the slab.

SECTION 03200

CONCRETE REINFORCEMENT

A. This section covers all concrete reinforcement and its accessories.

B. The latest editions of the following specifications and codes shall govern.

1. ACI 301, Specifications for Structural Concrete for Buildings.

2. ASTM A615

3. ASTM A185

PART 2 - PRODUCTS

A. Reinforcing steel shall comply with ASTM A615, intermediate grade 40, unless otherwise shown.

B. Reinforcing mesh shall comply with STM A185 and shall be gauge and mesh indicated.

C. Fibermesh shall be “Commercial Grade”.

A. Reinforcement bars and mesh shall conform to the sizes and spacings as shown.

B. Field bending and cutting will be permitted if performed in accordance with above listed code.

C. Reinforcement shall be free from dirt, oil, paint, grease, mill scale, and loose or thick rust when concrete is placed.

D. Woven wire mesh shall be hooked and/or supported during the placement of concrete slabs to ensure proper embedment as detailed.

E. Anchorage and accessories shall be accurately placed as shown and held rigidly in position during placing of concrete.

F. Depth of cover, radius of bends, and deformations shall be in accordance with ACI 318.

SECTION 03300

CAST-IN-PLACE CONCRETE

A. This section covers cast-in-place concrete, including curing and finishing of concrete.

B. The latest editions of the following specifications and recommended practices shall govern:

1. ACI 301 - Specifications for Structural Concrete for Buildings.

2. ACI 306 - Recommended Practice for Winter Concrete

3. ACI 305 - Recommended Practice for Hot Weather Concrete

C. Notify C.O. 48 hours prior to placing concrete.

PART 2 - PRODUCTS

A. Aggregate shall conform to the requirements of Federal Specification SS-A-281, Classes 1 and 2, and shall be well graded from fine to coarse within designated limits.

B. Portland, Cement, shall comply with ASTM C150, Type 1. Supplier shall provide mill certification of compliance with specification.

C. Water shall be clean, fresh, and free from injurious amounts of minerals or foreign substances.

D. Additives, air entrainment agents shall comply with ASTM C-260.

E. Concrete Mix Design

1. All concrete shall have a minimum "compressive strength" of 3000 psi at 28 days.

2. Concrete shall be air-entrained and shall contain not less than 3% and not more than 6% entrained air determined by test procedure AASHTO T 152.

3. The design of the concrete mixture shall be the responsibility of the Contractor.

F. Slump shall not exceed 3 inches for vibrated concrete or 5 inches for non-vibrated concrete.

PART 3 - EXECUTION

A. "Ready-Mixed Concrete" may be employed if the time interval between mixing at the plant and discharge into the form does not exceed 1-1/2 hours.

B. All concrete shall be placed within 1-1/2 hours from the time of mixing.

1. No concrete shall be placed after it has started its initial set.

2. No concrete with a temperature above 90ºF shall be placed.

C. Concrete shall be placed in such a manner as to avoid segregation of the mixture.

1. Concrete shall be spread in horizontal layers when practicable.

2. No concrete shall be freely dropped more than 5 feet.

3. Depositing a large quantity of concrete and flowing or working it along the forms will not be permitted.

D. Mechanical vibrators shall be used for consolidation of concrete.

1. Concrete shall be consolidated within 15 minutes after placement.

2. If consolidation of concrete with mechanical vibrators is impractical, hand tamping, rodding, and spading will be permitted.

3. A minimum of two vibrators, in working order, shall be on the job during concrete placement.

E. Concrete shall be placed and protected as specified for temperature conditions.

F. Concrete plant standards and truck mixer and agitator standards shall be as recommended by the National Ready Mix Association.

G. Finishing

1. All finishes shall be made without use of cement or other dusting materials.

2. Concrete shall be struck to proper grade and surface finished with float trowels.

3. At all exposed form surfaces, remove all ties, fill all form tie holes and imperfections

(i.e., "honeycombing") with dry cement mortar, remove all lines, and then "sack" or finish to match adjacent surfaces.

4. Interior floor shall be steel trowel finished. Slope all interior floors to positively slope towards the drains.

5. Exterior sidewalks shall be light broom finished.

H. Concrete shall be protected against rapid drying and kept moist for seven days by covering with curing paper with edges sealed.

I. Sampling and Testing

1. Sampling and testing shall be the responsibility of the Contractor, through an approved testing laboratory. The Contractor shall test for strength, air content and slump.

2. Sampling and testing shall be done in accordance with the following test methods:

--Sampling Fresh Concrete....................................AASHTO T-141 --Making and Curing Concrete Compression Test Specimens.............................AASHTO T-23 --Compressive Strength of Concrete Cylinders.....AASHTO T-22 --Percent Entrained Air (Pressure Method)...........AASHTO T-152 --Consistency (Slump) of Concrete.......................AASHTO T-119

3. Testing frequency shall be one sample or test per every 10 c.y. or truck load.

4. Submit copy of test results to Contracting Officer.

SECTION 03310

CONCRETE FROM PACKAGED

DRY MIX FOR MINOR STRUCTURES

PART 1 - GENERAL

A. Consists of constructing small concrete structures requiring one-half cubic yard or less in accordance with the details shown on the drawings and in conformance with the requirements of this specification.

A. Forms: Plywood, hardboard, wood, metal or other approved material to yield the required finish.

B. Dry Mix: The prebagged concrete mix shall be made using a dry preportioned blended mix meeting the requirements of ASTM C-387 for 28 days, 3,500 psi concrete.

C. Water: Water shall be clean and free from alkali and other deleterious materials. Water shall be added to each bag as recommended by the manufacturer.

D. Welded Wire Fabric: AASHTO M-32 and M-55.

PART 3 - EXECUTION

A. Job Mixing: The dry concrete mix and water shall be thoroughly mixed as recommended by the manufacturer. Mixing must be done in either a mechanical mixer or in a wheelbarrow.

Concrete shall be mixed and placed while fresh. Any concrete in which initial set has begun shall be wasted. In any case, the elapsed time from placement of the first batch to placement of the last batch necessary to complete a specific concrete item shall not exceed one hour.

B. Placing and Finishing: The fresh concrete shall be placed in the forms and rodded as necessary to remove the air pockets. The exposed surfaces of the concrete shall receive a medium trowel finish.

C. Protection from Cold: The Contractor shall ensure that the air surrounding the fresh concrete be kept at a temperature above 50 degrees F for a period of five days after the concrete is placed.

D. Curing: If determined necessary by the C.O., exposed surfaces shall be covered with plastic sheeting after the concrete has taken its initial set.

SECTION 03450

PRECAST CONCRETE VAULT TOILET

1.0 SCOPE

This specification covers the construction and placing of one Single and one Double Rocky Mountain precast concrete single and double vault toilet buildings.

2.0 SPECIFICATIONS

PCI MNL 116 Quality Control for Plants and Production of Precast Prestressed

Concrete Products

3.0 MANUFACTURER

A. Manufacturer must show four examples of Sweet Smelling Technology designed precast concrete vault toilet facilities produced, installed, and in use as an example of their ability to perform on this contract.

Manufacturer is:

CXT, Incorporated Spokane Industrial Park 3808 North Sullivan Road, Building 7 Spokane, WA 99216 Phone: 800-696-5766 / 800-663-5789

4.0 MATERIALS

A. Concrete - General

The concrete mix design will be designed to ACI 211.1 to produce concrete of good workability.

1. Concrete will contain a minimum of 610 pounds of cement per cubic yard.

Cement will be a low alkali type I or III conforming to ASTM C-150.

2. Coarse aggregates used in the concrete mix design will conform to ASTM C33 with the designated size of coarse aggregate #67.

3. Minimum water/cement ratio will not exceed .45. Slump will not exceed 4”.

4. Air-entraining admixtures will conform to ASTM C260. Water reducing admixtures will conform to ASTM C494, Type A. Other admixtures will not be used without customer approval.

B. Colored Concrete

1. Color additives will conform to ASTM C979. A 12”x12”x1” color sample in the customers choosen texture will be available for customer approval.

2. The following will contain colored concrete:

a. Toilet building roof panels

b. Building walls

c. Screen panels

3. The same brand and type of color additive will be used throughout the manufacturing process.

4. All ingredients will be weighed and the mixing operation will be adequate to ensure uniform dispersion of the color pigment throughout the concrete mix.

C. Cold Weather Concrete

1. Cold weather concrete placement will be in accordance with ACI 306.

2. Concrete will not be placed if ambient temperature is expected to be below 35 degrees F. during the curing period unless heat is readily available to maintain the surface temperature of the concrete at least 45 degrees F.

3. Materials containing frost or lumps of frozen materials will not be used.

D. Hot Weather Concrete

The temperature of the concrete will not exceed 80 degrees F. at the time of placement and when the ambient reaches 90 degrees F. the concrete will be protected with a moist covering.

E. Concrete Reinforcement

1. All reinforcing steel will conform to ASTM A615. All welded wire fabric will conform to ASTM A185.

2. All reinforcement will be new, free of dirt, oil, paint, grease, loose mill scale and loose or thick rust when placed.

3. Details not shown of drawings or specified will be to ACI318.

4. Steel reinforcement will be centered in the cross-sectional area of the walls and will have at least 1” of cover on the under surface of the floor and roof.

5. The maximum allowable variation for center-center spacing of reinforcing steel will be ½”.

6. Full lengths of reinforcing steel will be used when possible. When splices are necessary on long runs, splices will be alternated from opposite sides of the components for adjacent steel bars. Lap bars #4 or smaller a minimum of 12”.

Lap bars larger than #4 a minimum of 24 bar diameters.

7. Reinforcing bars will be bent cold. No bars partially embedded in concrete will be field bent unless approved by the customer.

F. Sealers and Curing Compounds

1. Curing compounds, if used, will be colorless, complying with ASTM C309, type I or 1-D.

2. Weatherproofing sealer for exterior of building will be a clear water repellent penetrating sealer.

G. Caulking, Grout, Adhesive and Sealer

1. All caulking will remain flexible and non-sag at temperatures from -40 to +140 degrees Fahrenheit.

2. Interior joints will be caulked with a paintable polyurethane sealant.

3. Exterior joints will be caulked with a tripolymer sealant caulk which compliments the exterior color.

4. Grout will be a non-shrink type and will be painted to match the color of surrounding concrete as nearly as possible.

5. Epoxy concrete adhesive will be two component, rigid, non-sag gel adhesive for bonding to dry or damp surfaces, moisture insensitive.

6. Cement base coating is formulated with a very fine aggregate system and a built in bonding agent.

H. Paint

1. All paints and materials will conform to all Federal specifications or be similar “top-of-the-line-components”. Paints will not contain more than .06 percent by weight of lead.

2. Type of paints for toilets

a. Inside concrete surfaces

I Interior floors will be a 1-part water based epoxy with a silica sand suspension to provide uniform texture. The color will be gray.

II Interior walls and ceilings will be a modified acrylic, water repellent penetrating stain. The color will be white.

b. Metal surfaces both inside and out

I DTM ALKYD

c. Exterior concrete surfaces

I Exterior slab will be clear sealer

II Exterior walls and roof will be a water repellent penetrating stain in the same color as the walls or roof followed by a clear acrylic anti-graffiti sealer.

I. Grab bars

Grab bars will be 18 gauge, type 304 stainless steel with 1-1/2” clearance. Grab bars will each be able to withstand 300 pound top loading.

J. Toilet Paper Dispenser

Dispenser will be constructed of ¼” thick, type 304 stainless steel. Dispenser will be capable of holding two (2) standard rolls of toilet paper. Toilet paper holder fastening system will be able to withstand 300 pound top loading.

K. Fiberglass Doors

1. Doors will be flush panel type 1-3/4” thick, Fiberglass.

2. Door frames will be, single rabbet, extruded pvc , width to suit wall thickness.

Three (3) rubber door silencers will be provided on latch side of frame.

L. Door Hinges

Door hinges will be 3 per door with dull chrome plating 4-1/2”x4-1/2”, adjustable tension, automatic-closing for each door.

M. Lockset

1. Lockset will meet ANSI A156.2 Series 4000, Grade 1 cylindrical lockset for exterior door.

2. Lever handle both inside and out

3. Either handle operates latch unless outside handle is locked by inside push-button.

4. Push-button will automatically release when inside lever handle is turned or door is closed.

5. Emergency slot on exterior so door can be unlocked from the outside with a coin, screwdriver and etc.

6. Inside lever always active.

7. U.S. 26D finish.

N. Optional Dead Bolt

Deadbolt will be a Lori Lock standard model with a double cylinder, 2 ¾” backset, and US26D finish. The cylinder will be a standard 11/8” Schlage Mortise cylinder with compression ring and 626 finish.

O. Door Stop

Doorstop will have a cast metal base, U.S. 26D finish with gray rubber 2-7/16” diameter bumper with a 1” projection.

P. Double Coat Hook

Coat hook will be 304 stainless steel 16 gauge (1.5mm), formed construction with a satin finish and have 3/16”x 7/8” nail in anchor. Upper hook will extend at least 2- 1/2” inches from the wall. Lower hook will extend at least 1-1/4” from the wall.

Q. Door Sweep

Door sweep will be provided at the bottom of door and will be an adjustable brush type.

R. Wall Vent

1. The units’ frame will be C3 x 4.1 316 grade channel stainless steel. The louver frame will be 3/16” x #3 flat stainless steel bar. The louver will be inverted Y, no vision 2x2x1/8” angle. There will be an insect screen between louvers.

2. See drawing for wall vents orientation.

S. Clean-out Covers

1. Plate for vault cleanout cover will be ¼” thick diamond plate 316 grade stainless steel. Lid will be hinged and configured so that it can be locked with a padlock. A neoprene gasket will be provided around the entire perimeter of the lid to provide an airtight seal.

T. Window Frames

1. Window Frames will be constructed from 316 grade stainless steel

U. Weld Plates

1. Weld plates will be 3”x6” 316 grade stainless steel.

V. Vault Liner

The vault liner shall be made from a single sheet black ABS/752 virgin plastic. The initial sheet thickness shall be a minimum .375. Final stamped thickness shall be a minimum .060. The vault liner shall have molded dovetail embeds to attach the liner to the concrete walls of the vault. The vault liner shall have two J-rails to attach the liner to the bottom of the vault. Vaults with the ABS liner shall be warranted against leaks for a period of seven years into or out of the vault itself.

W. Optional Roof Insulation – Required all Buildings.

Insulation is FT-108 on ½” plywood + 2” polyurethane foam + skin of resin and veil mesh. Approximately R-19.

6.0 MANUFACTURE

A. Mixing and Delivery of Concrete

Mixing and delivery of concrete will be in accordance with ASTM C94, section 10.6 through 10.9 with the following additions:

1. Aggregate and water will be adjusted to compensate for differences in the saturated surface-dry condition.

2. Concrete will be discharged as soon as possible after mixing is complete. This time will not exceed 30 minutes.

B. Placing and Consolidating Concrete

Concrete will be consolidated by the use of mechanical vibrators. Vibration will be sufficient to accomplish compaction but not to the point that segregation occurs.

C. Finishing Concrete

1. Interior floor and exterior slabs will be floated and troweled. A light broom finish will be applied to the exterior slabs.

2. All exterior top portions of the building walls and exterior screen walls will be a board & batt horizontal lap siding texture. The bottom section of the walls will be a field stone textured stone finish.

3. All exterior surfaces of the roof panels will be cast to simulate a cedar shake roof. The underside of the overhang will have a smooth finish (other roof textures available upon request).

D. Cracks and Patching

1. Cracks in concrete components which are judged to affect the structural integrity of the building will be rejected.

2. Small holes, depressions and air voids will be patched with a suitable concrete material. The patch will match the finish and texture of the surrounding surface.

3. Patching will not be allowed on defective areas if the structural integrity of the building is affected.

E. Curing and Hardening Concrete

1. Concrete surfaces will not be allowed to dry out from exposure to hot, dry weather during initial curing period.

7.0 FINISHING AND FABRICATION

A. Structural Joints

1. Wall components will be joined together with two welded plate pairs at each joint. Each weld plate will be 6” long and located one pair in the top quarter and one pair in the bottom quarter of the seam. Weld plates will be anchored into the concrete panel and welded together with a continuous weld. The inside seams will be a paintable caulk. The outside seams will use a caulk in a coordinating building color or clear.

2. Walls and roof will be joined with weld plates, 3”x 6”, at each building corner.

3. The joint between the floor slab and walls will be joined with a grout mixture on the inside, a matched colored caulk on the outside and two weld plates 6” long per wall.

B. Painting/Staining

1. An appropriate curing time will be allowed before paint is applied to concrete.

2. Some applications may require acid etching. A 30% solution of hydrochloric acid will be used, flushed with water and allowed to thoroughly air dry.

3. Painting will not be done outside in cold, frosty or damp weather.

4. Painting will not be done outside in winter unless the temperature is 50 degrees

F. or higher.

5. Painting will not be done in dusty areas.

6. Schedule of finishes

a. Inside concrete surfaces

I Inside floors will be 1 coat of 1-part water based epoxy with a silica sand suspension to provide uniform texture.

II Interior walls and ceilings will be 2 coats of a modified acrylic, water repellent penetrating stain, followed by 1 coat of clear sealer.

b. Metal surfaces both inside and out

I 2 coats of DTM ALKYD

c. Exterior concrete surfaces

I Exterior slab will be 1 coat of clear sealer

II Exterior walls will be 2 coats of water repellent penetrating stain in the same color as the walls or roof followed by 1 coat of clear acrylic anti-graffiti sealer.

8.0 TESTING

A. The following tests will be performed on concrete used in the manufacture of toilets.

All testing will be performed in the CXT (PCI certified) laboratories. Testing will only be performed by qualified individuals who have been certified ACI Technician Grade 1. Sampling will be in accordance with ASTM C172.

1. The slump of the concrete will be performed on the first batch of concrete in accordance with ASTM C143. This slump will be in the 3”- 4” range.

2. The air content of the concrete will be checked per ASTM C231 on the first batch of concrete. The air content will be in the range of 5.5% +/- 1%.

3. The compressive strength of the cylinders will be tested to ASTM C39. We will make one (1) cylinder for release, one (1) for 7 days and one (1) for 28 days. The release must be a minimum strength of 2500 psi, the 7-day must be a minimum of 4500 psi and the 28-day must be a minimum of 5000 psi.

4. A copy of all test reports will be available to the customer as soon as 28-day test results are available.

9.0 INSTALLATION

A. Scope of Work

Work specified under this Section includes excavation, backfill and placement of precast concrete vault toilet.

1. Installation of all precast concrete buildings shall be by CXT or a sub-contractor working for CXT

B. Materials

1. Bedding material to be sand or 3/8” minus crushed or screened aggregate.

2. Caulking between vault and toilet floor to be 1”x1” Butyl tape designed specifically to bond precast concrete to precast concrete.

C. Location

It’s the responsibility of the prime contractor to:

1. Provide exact location by stakes or other approved method.

2. Provide clear and level site free of overhead and/or underground obstructions.

3. Provide access to the site for truck delivery and sufficient area for the crane to install and the equipment to perform the contract requirements.

D. Access to Site

Delivery to site made on normal highway trucks and trailers. If at the time of delivery conditions of access are hazardous or unsuitable for truck and equipment due to weather, physical constraints, roadway width or grade, CXT may require an alternate site with better access provided to ensure a safe and quality installation.

E. Excavation and Elevation

1. Comply with all applicable OSHA Standards for excavation.

2. Excavate for the installation of the toilet vault to a depth that will allow the structure site to be free draining after installation is completed. Allow for a 2” leveling course beneath the toilet vault. Stockpile topsoil in a separate pile at sites.

3. Finish floor elevation will be 4-6 inches above natural grade measured at the front (entrance) of the exterior slab unless otherwise approved by the C.O.R.

The prime contractor will specify a finish floor elevation for the buildings at some sites. The contractor will install buildings at these sites with the floor elevation within a plus or minus 0.05 feet of the specified floor elevation.

4. No excavation will be left open more than seven days unless otherwise approved by the customer.

5. All excavations left open overnight will be fenced with wire mesh or plastic mesh fence secured to steel posts all around the excavation.

a. The bottom of the fence will generally follow the contour of the ground.

b. Maximum spacing of the steel posts will be ten feet.

c. Minimum height of the fence will be 36 inches.

F. Backfill and Compaction

1. Compact the natural ground at the bottom of the vault excavation with a minimum of three passes with a whacker-type mechanical compactor or equivalent approved by the customer.

2. Install sand or aggregate bedding material for leveling course. Compact leveling course with one pass with a whacker-type mechanical tamper or equivalent approved by the customer. Grade leveling course so there will be no high spots in the middle of the vault bottom. Compact with a second pass with a whacker or approved equivalent tamper.

3. Set vault in place and check for level. Backfill around the vault structure. Use excavated material for backfill except that rocks larger than six inches in maximum dimension which shall not be placed within six inches of the exterior vault walls.

4. Fill, adjacent to the building entry, will have excavated material placed in eight inch loose lifts and compacted with a minimum of two passes with a whacker-type mechanical compactor of equivalent approved by the customer.

G. Finish Grading

1. Spread excess excavated material from the vault around structure. Intended final grade is flush with the top of the front slab. Allow for placement of topsoil to reach that grade. Grade backfill away from structure at maximum slope of five (5) percent unless otherwise approved by the customer.

2. Spread stockpiled topsoil as final layer after rough grading is completed.

Areas disturbed by excavation, backfilling and stockpiling of excavated materials will be hand raked to remove exposed rocks over one inch in maximum dimension. Oversized rocks removed from the surface shall be disposed of in a designated area within 200 feet of the site.

H. Vault Toilet Riser and Accessories

1. Silicone caulk will be applied between toilet riser flange and concrete floor before the toilet riser is installed.

I. Exhaust Pipe Installation

1. After exhaust pipe is installed, seal around pipe at top and underside of roof with silicone caulk. Seal around pipe at top of floor slab will be accomplished by using silicone caulk.

10.0 WARRANTY—PRECAST DIVISION

CXT warrants that all goods sold pursuant hereto will, when delivered, conform to specifications set forth above. Goods shall be deemed accepted and meeting specifications unless notice identifying the nature of any non-conformity is provided to CXT in writing within one (1) year of delivery. CXT, at its option, will repair or replace the goods or issue credit for the customer provided CXT is first given the opportunity to inspect such goods. It is specifically understood that CXT’s obligation hereunder is for credit, repair or replacement only, F.O.B. CXT’s manufacturing plant, Spokane, Washington and does not include shipping, handling, installation or other incidental or consequential costs unless otherwise agreed to in writing by CXT.

This warranty shall not apply to:

1. Any goods which have been repaired or altered without CXT’s express written consent, in such a way as in the reasonable judgement of CXT, to adversely affect the stability or reliability thereof;

2. To any goods which have been subject to misuse, negligence, acts of God or accidents or

3. To any goods which have not been installed to manufacturer’s specifications and guidelines, improperly maintained, or used outside of the specifications for which such goods were designed.

DIVISION 4 - MASONRY

04150 - Masonry Accessories 04220 - Concrete Unit Masonry 04410 - Stone Masonry

SECTION 04150

MASONRY ACCESSORIES

A. This section covers all masonry accessories as shown on the drawings and as specified herein.

PART 2 - PRODUCTS

A. Vertical and horizontal reinforcing steel shall be of sizes and configuration shown on drawings.

1. Reinforcing steel shall comply with ASTM Designation A-615, intermediate grade 40.

B. Horizontal joint reinforcement shall be Dur-O-Wall, conforming to requirements of ASTM

A-82.

1. 8" concrete block - #8 Dur-O-Wall Truss.

2. 6” concrete block - #6 Dur-O-Wall Truss.

3. 4" concrete block - #4 Dur-O-Wall Truss.

C. Anchor bolts shall be of the size and type shown on the drawings.

PART 3 - EXECUTION

A. Reinforcing steel shall be installed as shown on the drawings. All concrete block cells containing reinforcing steel shall be filled solid with concrete.

B. Horizontal masonry reinforcement shall be installed in accordance with manufacturer's recommendations.

SECTION 04220

CONCRETE MASONRY UNIT

A. Work included in this section covers concrete block masonry and related items.

B. References

1. Standards of the Concrete Masonry Association, latest edition.

2. Concrete Masonry Handbook, Portland Cement Association

PART 2 - PRODUCTS

A. Mortar shall comply with ASTM C-270, Type M.

B. Concrete Masonry Units shall be stream-cured hollow loadbearing units meeting

ASTM C-90.

1. Faces shall be uniform in texture and free of defects which would impair finished appearance.

2. Units shall not vary from designated size more than 1/6".

3. Typical units 7-5/8" high x 15-5/8" long x 3-5/8”, 5-5/8”, and 7-5/8" wide, two or three cell type.

4. All blocks shall be Grade A units made with expanded slag or shale aggregate.

PART 3 - EXECUTION

A. All masonry walls shall be true and plumb and built to dimensions, bond, and pattern as indicated on the drawings.

1. Joints shall be 3/8" wide.

B. Provide all bond beams and special blocks where required or shown on the drawings.

C. Cores that contain vertical reinforcing steel shall be cleaned through the top of the cell by hand and filled with concrete.

1. The concrete shall be vibrated or rodded.

D. Reinforcing bars shall be installed in the cores and bond beams and anchored into concrete as shown on the drawings.

1. Cores with reinforcing steel and bond beams shall be filled with concrete.

E. All blocks shall be "buttered" on all contact surfaces with mortar.

1. Tight full mortar joints shall be placed between concrete and masonry.

2. There shall be full mortar coverage of the block face shells in both horizontal and vertical joints.

F. All exposed wall surfaces shall be kept clean and free of mortar or concrete splotches.

1. Wall and all joints shall be pointed and masonry cleaned.

2. Completed walls shall be cleaned with a detergent cleaner containing no muriatic acid.

G. No placing of masonry shall be done in freezing weather. (Below 40 degrees F.)

H. In hot or dry weather, the masonry shall be protected from the sun and shall be kept wet for a period of three days after completion.

SECTION 04410

STONE MASONRY

A. General

1. This section shall consist of furnishing and installing all stone masonry as called for on the plans or specified herein. The masonry shall be constructed on the prepared foundation in accordance with these specifications and in conformity with the lines, grade, sections, and dimensions shown on the drawings.

PART 2 - MATERIALS

A. Veneer Stone shall match the toilets located at the Canebrake Horse Camp.

1. The source for the stone is Jacobs Creek Quarry.

B. Prior to commencing stone work, the Contractor shall confer with the C.O. and shall erect a small sample wall approximately 4'0" long x 3'0" high for the C.O.'s approval as to color, size, texture, joints, and pattern. this work shall not be a part of the structure, and the final approved sample shall remain in place until the structure is completed and accepted at which time it shall be torn down and removed from site.

C. Schedule deliveries to avoid delays and to greater accumulations than can be suitably stored at site.

D. Store stone on wood supports clear of ground. Protect edges and exposed faces from damage and from staining. Stack stone in same position as intended position in finished work.

E. Arrange storage in approximate order of use to avoid excessive rehandling.

F. Mortar

1. Non-staining Cement: (Approved by C.O.)

2. Fine Aggregate: ASTM C 144, natural, pass 6 mesh screen. Sand for pointing mortar, pass No. 12 sieve.

3. Water: Potable quality

4. Hydrate Lime: ASTM C 207, Type S.

G. Workmanship

1. Placing Stone

When the masonry is to be placed on a prepared foundation bed, the bed shall be firm and normal to, or in steps normal to, the face of the wall before any stone is placed. When it is to be placed on foundation masonry, the bearing surface of this masonry shall be cleaned thoroughly and wetted immediately before the mortar bed is spread.

All masonry shall be constructed by qualified Masons with a minimum of 5 years experience.

Care shall be taken to prevent the bunching of small stones or stones of the same size.

Large stones shall be used for the bottom courses and the number of large selected stones shall decrease in the corners. In general, the stones shall decrease in size from the bottom of the top of work.

All stones shall be cleaned thoroughly and wetted immediately before being set, and the bed which is to receive them shall be cleaned and moistened before the mortar is spread.

They shall be laid with their longest faces horizontal in full beds of mortar, and the joints shall be flushed with mortar. The exposed faces of individual stones shall be parallel to the faces of the walls in which the stones are set.

At least 80% of the face area of the finished wall shall consist of stones laid on a horizontal bed so that a stable and horizontal appearance results. Stones shall be laid in a full bed of mortar. Care shall be exercised to keep exposed faces free of mortar. The maximum and minimum projections of rock faces beyond the surface plane shall not vary from each other by more than 2 inches.

The stones shall be so handled as not to jar or displace the stones already set. Suitable equipment shall be provided for setting stones larger than those that can be handled by two men. The rolling or turning of stones on the wall will not be permitted. If a stone is loosened after the mortar has taken initial set, it shall be removed, the mortar cleaned off, and the stone relaid with fresh mortar.

2. Bed and Joints

Bed surfaces of face stone shall be approximately normal to the faces…