ATT3 SPECS.docx

NATIONAL FORESTS IN NORTH CAROLINA

GRANDFATHER RANGER DISTRICT

CATAWBA FALLS RECREATION AREA

TRAILHEAD PARKING LOT CONSTRUCTION

MAY 2011

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 02250 - Compaction Control and Testing 02540 – Erosion and Sedimentation Control 02720 – Aggregate Base 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

ATTACHMENT 3

SECTION 01010

SUMMARY OF WORK

PART 1 - GENERAL

A. The Contractor is to provide the complete construction of the parking lot as specified herein and as shown on the drawings.

B. Permits

The Forest Service shall be responsible for applying for and obtaining a Sedimentation & Erosion Control Permit from the NC Department of Natural Resources.

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 must furnish and maintain a portable toilet.

2. The Contractor must furnish electrical generators as needed.

3. There is no potable water at the site. The contractor must furnsh his own potable water for construction and personnel use.

G. Safety

1. No trenches will be left open overnight.

SECTION 01050

FIELD ENGINEERING

PART 1 - GENERAL

A. The locations of all proposed new work relative to existing features are indicated on the construction drawings.

B. The Contractor shall be responsible for field layout and construction staking of all items of work.

1. The layout and construction staking shall be done by a Licensed Surveyor.

2. The Contractor must furnish the C.O.R. with a copy of all field notes.

3. The Forest Service must approve the field layout and grading plan before construction can proceed.

SECTION 01300

SUBMITTALS

PART 1 - GENERAL

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. Concrete mix design.

2. Corrugated Metal Pipe

3. Geotextiles

4. Crushed Aggregate

5. Signs

6. Bulletin Board Directories

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

8. Precast concrete vault toilet

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

SECTION 02110

CLEARING

PART 1 - GENERAL

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 road, parking lot, trails and buildings.

PART 2 - PRODUCTS

A. All cleared material including logs and stumps shall become property of the Contractor and shall be removed from the site.

PART 3 - EXECUTION

A. Clearing and grubbing shall consist of clearing the area of all trees approved to be removed, brush and other vegetation, rubbish and all objectionable material, and shall include grubbing stumps inside the limits of the road and parking lot.

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 02210

SITE GRADING

PART 1 - GENERAL

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

PART 2 - PRODUCTS

A. Roadway and parking lot base material shall be NC DOT approved ABC stone.

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

C. Gathering area and trail surfacing shall be rock dust.

C. Filter fabric shall be Mirafi 140NL (sediment retention pond).

D. Embankment spillway riprap shall be Class B eroson control stone.

PART 3 - EXECUTION

A. Clear, grub, and strip the roadway, parking lot, trail and gathering area of all vegetation and root matt. Remove all surface soil containing high amounts of organic matter and dispose of it as directed by the COR. Haul all objectionable material to an on-site disposal area designated by the COR.

B. The Contractor shall supply all fill and base 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 gravel fills under all concrete slabs 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.

SECTION 02220

STRUCTURAL EXCAVATION

PART 1 - GENERAL

A. This section consists of the necessary excavation for the bulletin board foundation and other 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 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

PART 1 - GENERAL

A. This section covers all compaction for earth fills under footings, slabs, walkways, 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, and walkways shall be placed in approximately 6" 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

PART 1 - GENERAL

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

PART 1 - GENERAL

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. North Carolina Sedimentation Control Law::

1. The Forest Service will be responsible for submitting and securing approval of an erosion and sedimentation control plan.

2. Any changes to the approved plan must be reviewed and approved by the State before they are implemented.

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

C. Pre-Construction Conference:

1. It shall be the responsibility of the Contractor to coordinate a pre-construction conference with the State Inspector and the C.O., or his Representative at least five days before starting construction.

PART 2 - PRODUCTS

A. Silt fences shall be pre-fabricated with 1-½” square, hardwood posts, Mirafi Silt Fence, or approved equal.

B. Filter stone shall be ½ to ¾ inch aggregate NCDOT #57 or #5 washed stone.

C. Standard size hay or staw bales with 2” x 2” x 36” long stakes.

PART 3 - EXECUTION

A. The Contractor must follow all the requirements of the Erosion and Sediment control plan.

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

C. The Contractor shall monitor the performance of all erosion and sediment control practices and make minor adjustment as needed on a day-to-day basis.

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

END OF SECTION

SECTION 02720

AGGREGATE BASE

PART 1 GENERAL

A. 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 base course shall be NC DOT approved ABC.

B. 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. Aggregate shall be handled in such a manner as to minimize segregation. 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. The subgrade shall conform to the grades and lines shown on the drawings and shall be approved in writing by the Contracting Officer’s Representative before placing the base course.

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

C. 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 approximately equal thickness.

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

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

F. 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.

G. The aggregate shall be compacted with construction equipment until all visible settlement ceases.

END OF SECTION

SECTION 02821

SEEDING

PART 1 - GENERAL

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. Annual Rye, 50 lbs. / acre (January 1 – May 1).

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. Kentucky 31 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.

SECTION 03100

CONCRETE FORMWORK

PART 1 - GENERAL

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 0.4 lbs/cf of approved treatment.

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

PART 1 - GENERAL

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

PART 1 - GENERAL

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. 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 shall not be required.

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.

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 TOILET

1.0 SCOPE

This specification covers furnishing and installating one Double Rocky Mountain with Chase precast concrete vault toilet building as produced by CXT Incorporated.

2.0 Manufacturer is:

3.0 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 emperature 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. Metal Doors and Frames

1. Doors will be flush panel type 1-3/4” thick, 16 ga. galvanized metal..

2. Door frames shall be 2” wide jambs & header, 16 ga. Galvanized metal.

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.

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.

5.0 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.

6.0 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.

7.0 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.

8.0 INSTALLATION

A. Scope of Work

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

B. Materials

1. Bedding material to be ABC stone.

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 6” leveling course beneath the toilet vault.

3. Finish floor elevation shall be as shown on the drawings. The project COR may change the finish floor elevation to match actual site conditions after clearing and rough grading operations are completed.

4. No excavation will be left open more than 24 hours unless otherwise approved by the COR.

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 six 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 ABC aggregate bedding material for leveling course. Compact leveling course with one pass with a whacker-type mechanical tamper or equivalent approved by the COR. 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 COR.

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.

2. Install solar powered vent fans in accordance with the manufacturers instructions. The solar panel must be faced due South.

9.0 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.