Attachment 1 - Specifications.pdf

NATIONAL FORESTS IN NORTH CAROLINA

NANTAHALA NATIONAL FOREST

VAULT TOILET REPLACEMENT PROJECT

ARRA # CIM-0811-14F

January 4 2010

National Forests in NC Engineering/Recreation/Heritage Facilities

SPECIFICATION INDEX

DIVISION 1 - GENERAL REQUIREMENTS

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

DIVISION 2 - SITE WORK

02110 - Clearing 02200 - Building Demolition 02210 - Site Grading 02220 - Structural Excavation 02250 - Compaction Control and Testing 02400 - Sheeting, Shoring, and Bracing 02540 - Erosion and Sedimentation Control 02600 – Pavement 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 5 - METALS

05500 - Metal Fabrications

DIVISION 6 - WOOD AND PLASTICS

06100 - Rough Carpentry

DIVISION 7 - THERMAL AND MOISTURE

07110 - Membrane Waterproofing 07920 - Sealants and Caulking

DIVISION 10 - SPECIALTIES

10800 - Toilet and Bath Accessories

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 vault toilet buildings as specified herein as shown on the drawings.

B. The Forest Service has not obtained and is not required permits from the Health Department for the construction of these systems The installation of the systems will not be inspected by the County.

C. 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 safety fences around all open excavations, storage areas and around the perimeter of the new building sites.

D. Coordination with Others

1. There will be another Contractor working at the campground during the life of this Contract. The other contract is for the replacement of the existing water system. Both Contractors must coordinate their activities to minimize conflicts and maximize flow of work.

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.

2. Notice to proceed will be issued as soon as possible. Work must start within 10 days of Notice to Proceed.

3. Contract time is 120 calendar days and includes inclement weather days. The Contractor will be ordered by the Contracting Officer to provide additional manpower at no cost to the Government to meet the Construction Schedule if work progress is determined to be unsatisfactory.

4. The Contractor will be required to start construction in the following sequence:

1- Wayah Bald 2- Hurrciane Creek 3- Ammons Branch

5. The Contractor will be allowed to use a campsite adjacent to two of the site, Ammons and

Hurricane Creek. No camp site will be provided at Wayah Bald.

G. Existing Facilities

1. The Contractor must keep the existing vault toilets open and accessable until the new vault are complete and open. If the contract submits a plan to support each site with portable toilets special approal may be granted until the final vault are complete.during the life of the Contract.

2. The Contractor will not be provided electricity for the construction of this project.

3. Potable water will not be made available for construction either. These site are very remote and will require the contractor to supply all necessary supplies.

H. Safety

1. No trenches will be left open overnight.

I. 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. The contractor shall stake all building and the project COR will approve and determine finish floor elevations.

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. Erosion Control Plan

2. Complete proposal of proposed vault

3. Building Submittals:

a. Colors

b. Building Style, size, materials.

c. All hardware

d. And as required by section 03450

4. 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 02200 – Building Demolition 02210 – Site Grading 02220 – Structural Excavation 02250 – Compaction and Testing 02400 – Sheeting, Shoring, and Bracing 02540 – Erosion and Sedimentation Control 02720 – Aggregate Base 02740 – Plant Mix Bituminous Pavement 02760 – Pavement Markings 02821 – Seeding, Fertilizing and Mulching

SECTION 02110

CLEARING

A. Work included in this section covers clearing, grubbing, and removal of all vegetation within the construction area as shown on the drawings or specified herein for the construction of the buildings and installation of new site utilities.

PART 2 – PRODUCTS

A. None

PART 3 - EXECUTION

A. Clearing and grubbing shall consist of clearing the area of all trees marked to be removed, brush and other vegetation, rubbish and all objectionable material, and shall include grubbing stumps that may interfere with the installation of utility lines or building foundations.

B. All logs, brush, stumps and debris shall become the property of the Contractor and shall be hauled-off

Government land.

1. Brush may be chipped on-site and scattered as directed by the Contracting Officer.

C. Trees shall be felled so as not to damage trees outside of the construction area or trees that are to remain.

D. Trees that are damaged will be painted with tree wound dressing on all cuts and wounds.

SECTION 02200

BUILDING DEMOLITION

PART 1 – GENERAL

Work included in this section covers the removal of the existing toilet buildings.

PART 2 – PRODUCTS

A. None

PART 3 – EXECUTION

A. Disconnect electrical service to the buildings prior to demolition.

1. Typically the vaults contain rocks, rags, woody materials and other trash.

2. Vault may be leaking and have solids in the vaults that may have crusted over.

3. The pumping contractor will be required to furnish water as needed to liquefy the contents of the vaults as needed to facilitate pumping in order to remove all the materials within the tanks.

4. The vault may have to be pumped more than once in order to remove the solids.

5. The typical 3 inch residential hose may not function for this operation.

6. The contractor must furnish a pump truck similar to the equipment used by the municipalities to open plugged sewer mains to accomplish this work.

B. Dispose of all refuse at a State Approved facility.

1. Building materials that can be recycled should be recycled on this project.

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 vault construction, sidewalks, etc as shown on the drawings related to the vault buildings.

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 02250

COMPACTION CONTROL AND TESTING

A. This section covers all compaction for earth fills under building footings, ramps, slabs, walkways, utility 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 8" loose lifts and be compacted to 95% of AASHTO T-99-97.

1. Check every compacted layer at two random locations with a nuclear density gauge.

C. Backfill around structures and supports shall be done in 12" 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.

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.

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 as shown on the drawings and as 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 02720

AGGREGATE BASE

PART 1 GENERAL

A. WORK INCLUDED

1. This item shall consist of furnishing, hauling, and placing one or more courses of aggregate on an approved sub grade or base.

PART 2 PRODUCTS

A. AGGREGATE

1. Aggregate base course shall be NC DOT approved ABC.

2. The commercial source shall provide a statement from a certified testing facility stating that aggregate from this source meets the requirements of these specifications and the designated gradation.

PART 3 EXECUTION

A. HANDLING & STORAGE

1. Aggregate shall be handled in such a manner as to minimize segregation.

2. Any method of stockpiling aggregate which allows the stockpile to become contaminated with foreign matter or causes excessive degradation of the aggregate shall not be permitted.

B. PREPARATION

1. The sub grade shall conform to the grades and lines shown on the drawings and shall be approved in writing by the COR before placing the base course.

C. MIXING & PLACING

1. Water shall be added to the aggregate in an amount necessary to provide a moisture content suitable for compaction. The moisture content of the aggregate shall be uniform throughout.

2. The aggregate shall be spread in a uniform layer, with no segregation of size, and to a loose depth that shall have the required thickness when compacted. If the required compacted depth of any aggregate base or surface course exceeds 6 inches, it shall be placed in two or more layers of approximate equal thickness.

3. Hauling equipment shall be dispersed over the surface of the previously constructed layer to minimize rutting or uneven compaction.

The surface of each layer shall be bladed during the compaction operations to remove irregularities and produce a smooth even surface that will drain.

4. The thickness of the compacted base shall not vary more than 1/2 inch from the required thickness shown on the drawings. The compacted thickness shall not be consistently below the specified thickness.

5. The aggregate shall be compacted with construction or compaction equipment until shall continue until no visual displacement occurs.

SECTION 02740

PLANT MIX BITUMINOUS PAVEMENT

1. This work consists of the production, delivery, placement, and compaction of asphalt plant mixed surface as shown on the drawings and specified herein.

B. REFERENCES

AASHTO M 156-89 Requirements for Mixing Plants for Hot- Mixed, Hot-Laid Bituminous Paving Mixtures

NCDOTSS North Carolina Department of Transportation Standard Specifications for Roads & Structures

C. SUBMITTALS

1. The asphalt mix formula proposed for use by the subcontractor shall be a mix formula that has been previously certified by NC DOT as meeting the requirements of this specification. The subcontractor shall submit a letter of certification from the proposed asphalt mix supplier that verifies the intended formula meets said requirements.

2. The Contractor shall furnish with each shipment 2 copies of a delivery ticket. Both copies shall accompany the shipment and be delivered to the COR at the destination. The delivery ticket shall contain the following information: Delivery ticket number, date shipped, project or purchase order number, State Laboratory assigned batch number, destination, name of consignee, trailer or car number, supplier's storage tank or batch number, quantity loaded (pounds or gallons), specific gravity or pounds per gallon at 60°F., loading temperature, and net gallons at 60°F.

3. Certified reports of Inspections and laboratory tests as required by this specification shall be prepared by an independent testing laboratory.

4. In either case no asphalt materials shall be delivered to the job site prior to said certifications being received and/or accepted by the COR.

D. QUALITY PROGRAM REQUIREMENTS

1. The asphalt mixing plant shall meet the requirements of NCDOTSS , Section 610-5, Asphalt Mixture Production.

A. ASPHALTIC CONCRETE - SURFACE COURSE

1. NCDOT Type S9.5B shall be used as a surface course and placed over the prepared aggregate base course as shown on the drawings.

A. GENERAL

1. The asphalt plant mix shall be produced, transported to the site, placed, and compacted in accordance with the applicable sections of NCDOTSS 610, Asphalt Plant Mix Pavements.

B. Conditioning of Existing Surface

1. Immediately before placing the bituminous mixture, the existing surface shall be cleaned of loose or deleterious material.

2. Contact surfaces of curbing, gutters, manholes, and other structures shall be painted with a thin, uniform coating of bituminous material prior to placing bituminous mixture against them.

3. The surfaces of adjacent structures shall be protected from spattering or marring during placement.

C. AGGREGATE SUBGRADE PREPARATION

1. All areas to receive new asphalt paving shall be graded to ensure continuous drainage.

1. Aggregate subgrade shall be approved in writing by the COR before asphalt paving begins.

D. ASPHALT PAVEMENT

1. Surface smoothness tolerances shall conform to NCDOTSS, Section 610-13 Surface Requirements.

2. Do not apply asphalt mixtures to a wet or frozen surface or when the air temperature is below 45 degrees F or when weather conditions are otherwise unfavorable. Any exceptions to these restrictions shall require written permission from the COR.

E. JOINTS

1. When the laying of the mixture is to be suspended long enough to permit the mixture to become chilled, a transverse joint shall be constructed.

2. A butt joint will be permitted, provided proper compaction is achieved. The joint shall be constructed square to the lane alignment and all excess material shall be discarded.

3. Before paving operations are resumed, the exposed edge of the previously constructed pavement shall be lightly coated with tack coat.

F. COMPACTION

1. Asphalt shall be uniformly compacted by rolling before the asphalt has cooled below 185 degrees F. Compaction equipment shall meet the requirements of NCDOTSS Section 610-10.

2. Asphalt shall be compacted to a density of at least 90% of the maximum specific gravity (density) as determined according to AASHTO T209 as part of the job-mix formula.

G. TESTING & INSPECTION

1. Not required.

SECTION 02760

PAVEMENT MARKINGS

1. This item shall consist of furnishing and applying the individual lines for roadways, parking stalls, cross walks, directional arrows, letters, numerals, or signs on the roads for the control of traffic, at locations as shown on the drawings, marked in the field, or as directed by the COR.

B. PAINT

1. Traffic paint shall be the alkyd resin type, ready-mixed white or yellow, Type III, meeting the requirements of AASHTO M 248. The paint color shall be as shown on the drawings.

Colors:

Road centerline – yellow

Road edges – white

Parking stall lines - blue

International symbol of accessibility - white on blue background.

Directional arrows - white

C. PREPARATION

1. The area to be painted shall be dry, clean, and free of loose particles. The paint machine shall be of the spray type, capable of uniformly applying the paint under pressure through nozzles spraying directly upon the pavement. Each machine shall be capable of simultaneously applying three separate stripes, either solid or skip. Each paint tank shall be equipped with a mechanical agitator. Each nozzle shall be equipped with cutoff valves that will apply broken or skip lines automatically. A mechanical bead dispenser that will distribute the beads in a uniform pattern at the rate specified shall be located directly behind and synchronized with the spray nozzle. Each nozzle shall also be equipped with line guides consisting of metallic shrouds or air blasts.

D. APPLICATION

1. The Contractor shall be responsible for preliminary spotting of the lines to be painted and approval by the COR must be obtained before striping may begin.

2. Stripes shall be 4 inches wide.

3. The paint shall be thoroughly mixed prior to application, and shall be applied when the air temperature is above 40oF.

4. The rate of application for 4 inch wide solid traffic stripes shall be at least 19.2 but not more than 21.1 gallons per miles. For broken traffic striping the rate of application shall be at least 4.8 but not more than 5.3 gallons per mile.

5. For narrower or wider striping, paint shall be applied at a rate in proportion with the 4 inch stripes.

6. Glass beads shall be applied at a minimum rate of 5 pounds of beads for each gallon of paint and shall be applied by dropping on the fresh paint.

7. The painted area shall be protected from traffic until the paint is thoroughly dry.

8. All markings shall present a clean-cut, uniform appearance. All markings which fail to have a uniform appearance, either day or night, shall be corrected by the Contractor.

SECTION 02821

SEEDING, FERTILIZING, AND MULCHING

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.

A. Fertilizers shall be spread on the ground surface at the following rates.

Grade 18/46/0 600 lb/acre

B. Seed shall be spread on the ground surface in the following amounts.

Winter 90 lbs/acre

C. All dates shown are guidelines. If weather conditions are abnormal, the CO shall consult with

Forest Service Soil Scientist and/or Botanist for additional seeding times.

Permanent Seeding – Spring (2/1 to 5/1):

Fungus Free Tall Fescue (Kentucky 31 is not acceptable): 20 lbs/acre Virginia Wild Rye: 10 lbs/acre Creeping Red Fescue: 6 lbs/acre Red Clover: 12 lbs/acre Rye (cereal small grain): 30 lbs/acre

Permanent Seeding – Summer (5/1 to 8/1):

Creeping Red Fescue: 10 lbs/acre Little Bluestem: 10 lbs/acre Indian Grass: 10 lbs/acre Partridge Pea: 6 lbs/acre

Temporary Seeding:

Foxtail (German) Millet: 30 lbs/acre Partridge Pea: 5 lbs/acre

D. Assure that mulch used on the project is certified noxious weed free by the appropriate authority in the jurisdiction of use.

E. Moisten seeding areas before seeding and maintain the moisture until 3 days after germination.

F. Apply fertilizer by the following methods:

1. Dry method. Incorporate the fertilizer into the upper portion of the seedbed before seeding.

2. Apply seed and fertilizer at rates specified.

3. Apply seed by the following methods:

a. Dry method. Apply the seed with approved power driven seeders, drills, or other mechanical equipment. Hand-operated seeding methods are satisfactory on areas inaccessible to mechanical equipment.

4. Apply mulch within 48 hours after seeding by the following methods:

a. Dry method. Spread all mulch material, except wood and grass cellulose fibers, by a mulch spreader utilizing forced air to blow the mulch material onto the seeded area.

Apply straw mulch at designated rate. Anchor the mulch material with an approved stabilizing emulsion tackifier or approved mechanical method. Do not mark or deface structures, pavements, utilities, or plant growth with tackifier. Apply wood fiber or grass straw cellulose fiber mulch at the designated rate. Apply bonded fiber matrix hydraulic mulch at the designated minimum rate. Apply so no hole in the matrix is greater than 0.04 inches. Apply so that no gaps exist between the matrix and the soil.

b. Mulch by hand areas inaccessible to mulching equipment.

5. Protect and care for seeded areas including watering when needed until final acceptance.

Repair all damage to seeded areas by reseeding, refertilizing, and remulching. Apply supplemental applications of seed, mulch, fertilizer, lime, or ammonium nitrate.

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

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 COR.

E. Pine straw or hay 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

0.21bs/cf of treatment (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.

PART 3 - EXECUTION

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 floors 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.

5. Sampling and Testing applies to building foundations and slabs only.

SECTION 03310

CONCRETE FROM PACKAGED DRY MIX FOR MINOR STRUCTURES

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.

PART 2 - PRODUCTS

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 TOILETS

1.0 SCOPE

This specification covers the construction and complete instalation of TWO Double Rocky Mountain w/ Chase and Marine Package vault toilet buildings. Also included is ONE single vault unit Rocky Moutain as shown in the drawings. Colors of these units shall be Toasted Almond horizontal lap siding with Mountain Blend Napa Valley Rock/ The roof shall be Java Brown cedar shake texture.

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. Galvanized Doors

1. Doors will be flush panel type 1-3/4 thick, 16 guage Galvanized steel. Top painted with DTM ALKYD. Stainless Steel kick plates shall be each side of the door.

Door frames will be knockdown or welded type, single rabbet, minimum 16 gauge prime coated steel top painted with DTM ALKYD, 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. Dead Bolt

Deadbolt will be Yale 1152 cylinder for the National Forests in North Carolina.

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. 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.

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 buildingsas he works with the COR to determine the elevations at each of these buildings. 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…