Attachment 002 - Rev 1 Specifications.pdf

NATIONAL FORESTS IN NORTH CAROLINA

UWHARRIE NATIONAL FOREST

UWHARRIE RANGER DISTRICT

BADIN LAKE RECREATION AREA

UWHARRIE HUNTCAMP CAMPGROUND

CAMPGROUND RENOVATION

FEBRUARY 13, 2024

SPECIFICATION INDEX

DIVISION 1 - GENERAL REQUIREMENTS

01110 Summary of Work 01140 Construction Constraints 01270 Measurement and Payment 01330 Submittals 01420 Reference Standards 01450 Quality Control 01720 Construction Staking

DIVISION 2 - SITE WORK

02220 Selective Demolition 02230 Clearing 02240 Compaction Control and Testing 02310 Earthwork 02315 Structural Excavation for Minor Structures 02370 Erosion & Sediment Control 02720 Aggregate Base 02920 Permanent and Temporary Seeding

DIVISION 3 - CONCRETE

03100 Concrete Formwork 03200 Concrete Reinforcement

Division 15 – MECHANICAL

15100 Valves & Valve Boxes 15200 Hydrants 15213 Waterlines 15214 Disinfection of Waterlines

SECTION 01110

SUMMARY OF WORK

PART 1 GENERAL

1.01 PROJECT LOCATION

A. Location of work is at the Uwharrie Hunt Camp, 280 Reservation Rd., Troy, NC 27371. Uwharrie Hunt Camp is approximately 12 miles Northwest of the Uwharrie District Ranger Office.

1.02 DESCRIPTION

A. This work shall consist of the complete renovation of the Uwharrie Hunt Camp Campground. The work shall include the following: Demolition of two cast concrete bridges (approx. 7’x4’x2’) two existing yard hydrants, removal and replacement of two sets of wooden stairs, regrading and resurfacing of all tent pads, replacement of all camping pad timbers, minor earthwork and grading, installation of concrete ABA accessible ramp with ABA handrail, and construction of two timber pedestrian bridges, and associated per these drawings and specifications.

B. The Contractor shall furnish all labor, materials, equipment, tools, supplies, supervision and transportation and perform all of the work required AS SHOWN ON THE DRAWINGS AND SPECIFICATIONS.

1.03 STORAGE OF MATERIALS

A. 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 COR and be neat and orderly.

B. The Contractor shall install barricades or tape barriers around all open excavations.

1.04 EXISTING FACILITIES

A. There are currently two functioning water pumps/hydrants as well as two functioning vault toilets.

B. Electricity is not available at the site.

1.05 SAFETY

A. No trenches shall be left open overnight without proper barriers or flagging to identify open trench hazard during nonworking hours.

B. Construction fencing shall be used to limit access to the construction areas by the general public.

1.06 CONSTRUCTION SCHEDULING & CONSTRAINTS

A. A proposed schedule of work for the project construction shall be submitted to the COR for approval 10 days prior to starting construction.

PART 2 PRODUCTS

A. All timbers at camping pads are to be 6”x6” AWPA type C heavy duty, ground contact certified wood.

B. Posts and timbers for two stair sets will be AWPA type C heavy duty, ground contact certified wood.

C. Water hydrants will be U150W freeze-proof utility yard hydrants with a wheel handle, by Woodford or approved equal.

SECTION 01140

CONSTRUCTION CONSTRAINTS

1.01 DESCRIPTION

A. This specification covers the scheduling requirements and restrictions for this project.

1.03 TIME REQUIREMENTS

A. Uwharrie Hunt Camp will be closed until all work is completed.

SECTION 01270

MEASUREMENT AND PAYMENT

1.01 SUMMARY

A. The intent of this section is to explain, in general; what is and what is not included in a bid item; the limits or cut-off points where one bid item ends and another begins; and method of measurements and basis of payment for work items listed in the Bid Item Schedule.

B. Work:

1. Furnishing all labor, materials, equipment, and other incidentals necessary to successfully complete the project or any portion of it, and carrying out all duties and obligations imposed by the contract on the Contractor.

C. Payment:

1. For each individual item listed here and in the Schedule of Items, payment shall be full compensation for all work related to the particular item in accordance with these specifications, as shown on the drawings, and as staked in the field.

2. Measurement and payment for contract work shall be made only for and under those pay items included in the Schedule of Items. All other work and materials shall be considered incidental or as included in the payment for items shown.

1.02 DETERMINATION OF QUANTITIES

A. The contractor shall perform, or cause to be performed, all measurement of quantities of materials incorporated into the work processes that are to be measured under the provisions of the contract.

B. Quantity Measurements:

1. The Contractor shall make all measurements for computation of quantities for all work items except those specified for payment by Contract Quantity (CQ) or Lump Sum Quantity (LSQ).

2. The contractor shall compute the quantities for periodic progress payments; the Contracting Officer shall compute the quantities for the final payment based on measurements taken by the Contractor.

3. All Contractor measurements are subject to verification.

4. The Contractor shall submit all field notes, calculation sheets, and other data used to determine quantities.

5. The Contractor shall certify in writing as to the accuracy of the measurements and computations submitted.

C. The following measurements and calculations are used to determine contract quantities.

1. For individual construction items, longitudinal and lateral measurements for area computations shall be made horizontally or corrected to horizontal measurement unless otherwise specified.

Measurements for geotextiles, netting and erosion control blankets shall be along slope lines.

2. The average end area method shall be used to compute volumes of excavation or embankment.

However, if in the judgment of the Contracting Officer (CO), the average end area method is impractical, measurement shall be made by volume in hauling vehicles or by other three-dimensional methods.

3. Structures shall be measured according to neat lines shown on the drawings or as altered by the CO, in writing, to fit field conditions.

4. For items that are measured by the linear foot, such as pipe culverts, fencing, guardrail, and underdrains, measurements shall be made parallel to the base or foundation upon which the structures are placed. Pipes shall be measured along center of invert.

5. For aggregates weighed for payment, the tonnage shall not be adjusted for moisture content, unless otherwise provided for.

6. For standard manufactured items--such as fence, wire, plates, rolled shapes, pipe conduits--identified by gauge, weight, section dimensions, and so forth, such identifications shall be considered the nominal weights or dimensions. Unless controlled by tolerances in cited specifications, manufacturer's tolerances shall be accepted.

1.03 UNITS OF MEASUREMENT

A. Payment shall be by units defined and determined according to U.S. Standard measure and by the following:

B. Cubic Yard: A measurement computed by one of the following methods:

1. Excavation, Embankment, or Borrow. The measurement computed by the average end area method from measurements made longitudinally along a centerline or reference line.

2. Material in Place or Stockpile. The measurement computed using the dimensions of the in-place material.

3. Material in the Delivery Vehicle. The measurement computed using measurements of material in the hauling vehicles at the point of delivery. Vehicles shall be loaded to at least their water level capacity. Leveling of the loads may be required when vehicles arrive at the delivery point.

C. Each: One complete unit, which may consist of one or more parts.

D. Linear Foot: Linear feet measured horizontally.

SECTION 01330

SUBMITTALS

1.01 REQUIREMENTS INCLUDED

A. Procedures B. Manufacturers Instructions C. Manufacturers Certificates

1.02 PROCEDURES

A. Submittals shall be furnished before ordering, purchasing, or fabrication occurs. All submittals shall be evaluated and either approved or rejected by the COR within 14 days after their receipt. One digital copy of the submittals is required. The following products shall require submittals.

a. Pressure treated lumber

b. Gravel & crushed stone

c. Valves and Valve Boxes

d. Pressure Reducer and Check Valve

e. Waterlines and Fittings

B. If the Contractor intends to provide or install an item that is an "or equal" or differs from that which is specified or shown on the drawings, he/she shall submit all product data, revised drawings or new drawings to the COR for approval prior to ordering/purchase. Information provided shall include:

1. Product name and model number

2. Manufacturer

3. Product description

4. Technical data

1.03 MANUFACTURER’S CERTIFICATES

A. The Contractor shall provide all guarantees, certificates of performance, material of workmanship or warranties provided by the manufacturer or required by the specifications to the COR.

SECTION 01450

QUALITY CONTROL

1.01 WORK INCLUDED

A. The work shall consist of providing quality control to ensure compliance with the drawings, specifications, and provisions of the contract. The Contractor shall provide all personnel, equipment, tests, and reports to meet the requirements of this specification.

B. The contractor or their representative shall be onsite at all times that work is ongoing.

C. The contractor or their representative shall maintain a complete set of construction drawings and specifications onsite at all times.

D. The COR shall be the sole determiner of workmanship and sufficiency.

D. All timbers at camping pads are to be 6”x6” AWPA Use Category System (U1) for use category 4B, ground contact – heavy duty (UC4B).

E. Posts and timbers for two stair sets will be AWPA Use Category System (U1) for use category 3B, above ground exposed – (UC3B).

F. Water hydrants will be U150W freeze-proof utility yard hydrants with a wheel handle, by Woodford or approved equal.

PART 3 EXECUTION

3.01 QUALITY CONTROL SYSTEM

A. The Contractor shall provide and maintain a quality control system that will ensure that all services, supplies, and construction required under this contract conform to the contract requirements. The Contractor shall perform, or cause to be performed, the sampling, inspection, and testing required to substantiate that all supplies, services, and construction conform to the contract requirements.

3.02 CLEANUP

A. The contractor shall leave the site clean and ensure no trash or debris is left behind.

B. Contractor shall use a magnetic roller to retrieve any nails that may have fallen on the ground.

3.03 INSPECTION & ACCEPTANCE

A. The COR or inspector may inspect any and all work at anytime during this project.

E. Any work that does not meet contract specifications shall be corrected by the contractor with no additional pay.

3.04 SAMPLING & TESTING

A. The Contractor shall provide and maintain appropriate measuring and testing devices, equipment, and supplies to accomplish the required measurement, testing and inspection in a timely manner. The Contractor shall take samples and perform inspections and tests necessary to achieve the quality of construction required by the contract. Sampling and testing frequency for specific items shall be as defined in the specifications.

3.05 RECORDS

A. The Contractor shall maintain current records of all inspections and tests performed.

B. The Contractor shall certify in writing that all inspections were performed in accordance with specifications. All testing and inspection records shall be submitted to the COR upon completion of the project

3.06 CERTIFICATIONS & MEASUREMENTS

A. Offsite Produced Materials. The Contractor shall furnish certificates executed by the manufacturer, supplier, or vendor, stipulating that all offsite produced materials incorporated into the work meet the applicable requirements as shown on the drawings or specifications.

B. Quantity Measurement. The Contractor shall make all measurements for computation of quantities for all work items except those specified for payment by Designed Quantity (DQ). The Contractor shall compute the quantities for periodic progress payments; the COR will compute the quantities for final payment based on measurements taken by the Contractor. All measurements are subject to verification. The Contractor shall submit all field notes, calculation sheets, and other data used to determine quantities.

The Contractor shall certify in writing as to the accuracy of the measurements and computations submitted.

3.07 BASIS OF PAYMENT

Quality Control shall be considered incidental to the bid items and no additional payment will be made.

SECTION 01720

CONSTRUCTION STAKING

PART 1 - GENERAL

A. The locations of all proposed new work relative to existing features are indicated on the construction drawings. Benchmarks for vertical control and centerline station stakes for all utilities and locations of camp site pads will be provided by the COR.

B. Construction staking shall be the responsibility of the contractor. Staking for any part of the work shall be approved by the COR prior to commencing construction on that part.

SECTION 02220

SELECTIVE DEMOLITION

A. This work shall consist of the removal and legal disposal of concrete pavement, camping site timbers, waterline, waterline appurtenances and other items as shown on the drawings and specified herein.

B. Disconnect existing waterline at location shown on plans. Cap existing waterline in direction of well house and abandon/remove the remainder as shown on plans.

PART 2 - PRODUCTS

2.01 REPAIR MATERIALS

A. Use repair materials identical to existing materials unless otherwise specified on the drawings or in the project specifications.

B. If identical materials are unavailable or cannot be used for exposed surfaces, use materials that visually match existing adjacent surfaces to the fullest extent possible.

C. Use materials whose installed performance equals or surpasses that of existing materials.

PART 3 - EXECUTION

3.01 PREPARATION

A. Site Access and Temporary Controls: Conduct selective demolition and debris-removal operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.

A. Do not close or obstruct streets, walks, walkways, or other adjacent occupied or used facilities without permission from CO and authorities having jurisdiction. Provide alternate routes around closed or obstructed traffic ways if required by governing regulations.

B. Erect temporary protection, such as walks, fences, railings, canopies, and covered passageways, where required by authorities having jurisdiction.

C. Protect existing site improvements, appurtenances, and landscaping to remain.

D. Temporary Facilities: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.

3.02 SELECTIVE DEMOLITION

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations.

1. Neatly cut openings and holes plumb, square, and true to dimensions required. Use cutting methods least likely to damage construction to remain or adjoining construction.

3.03 REPAIRS

A. Repair all existing site features to previously existing condition.

1. Concrete walks to be repaired per Sections of Division 3 – CONCRETE.

2. Asphalt surfaces shall be repaired to match existing structural section.

3. Disturbed landscaped areas shall be seeded as specified within the plans within 15 days of final

4. Gravel parking areas disturbed during construciton activities shall be graded to prior condition following completion of work.

3.05 DISPOSAL

A. All other demolished structures shall become the property of the Contractor. All demolition refuse and construction debris shall be removed and disposed of legally off of USDA Forest Service lands.

SECTION 02230

CLEARING

A. Work included in this section covers clearing within the work limits as specified herein for the reconstruction and leveling of the camping pads, and installation of the ABA wheelchair ramp.

None

3.01 CLEARING

A. Clearing shall be limited to pruning or removing designated trees that interfere with the reconstruction of existing camping pad footprints. All logs, branches, stumps, and debris may be disposed on Forest Service property beyond treeline and outside of the construction site/Uwharrie Hunt Camp recreational area.

B. Limb all trees and buck trunks to a maximum 8’ lengths. Scatter debris such that pieces do not overlap and debris does not exceed 4’ height.

C. No tree clearing shall be permitted without prior approval from COR.

3.02 BASIS OF PAYMENT

A. Clearing and grubbing will be paid with Clearing and Demolition as a lump sum pay item.

SECTION 02240

COMPACTION CONTROL AND TESTING

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

PART 2 – PRODUCTS

2.01 FILL

A. Material used for fills and backfills shall be as described in Section 02310, Earthwork.

3.01 FILL & BACKFILL

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 until no visual displacement occurs.

E. Compaction testing shall not be required.

SECTION 02310

EARTHWORK

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.

1.02 DEFINITIONS

A. Borrow: Satisfactory soil imported from off-site for fill or backfill.

B. Unclassified Excavation: Excavation to subgrade elevation and to lines and dimensions indicated regardless of the character of surface and subsurface conditions encountered, including rock, soil materials, and obstructions.

2.01 BACKFILL AND FILL MATERIAL

A. 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.

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

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

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

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

3.01 EXCAVATION

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

B. 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.

3.02 EMBANKMENT

A. The contractor shall use cut materials for any necessary fill, unless otherwise specified in drawings, specification package, or by the COR.

3.03 COMPACTION

A. Compact earth fills under all concrete slabs, ramps, and footings.

B. Compaction shall be in accordance with Section 01460, Compaction Control and Testing.

3.04 FINISHING

A. All slopes shall be rounded.

B. 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.

SECTION 02315

TRENCHING, BACKFILLING, AND COMPACTING FOR UTILITIES

PART 1 – GENERAL

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

1.02 DEFINITIONS

A. Backfill: Soil materials used to fill an excavation or as pipe bedding.

B. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe.

C. Subsequent Backfill: Backfill placed over initial backfill to fill a trench.

D. Aggregate Base Course: Layer placed between the subgrade and asphalt paving, concrete slab, concrete walk or structure.

E. Bedding: Layer placed over the excavated subgrade in a trench before laying pipe.

F. Utilities include on-site underground waterlines and underground electric.

2.01 BACKFILL

A. Bedding and Initial Backfill – Imported sand.

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

2.03 SUBBASE

A. Naturally or artificially graded mixture or natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least 90 percent passing a 1-1/2 – inch (38 mm) sieve and not more than 12 percent passing a No. 200 (0.075 mm) sieve.

2.02 IDENTIFICATION TAPE

A. Detectable Warning Tape: Acid- and alkali-resistant polyethylene film warning tape manufactured for marking and identifying underground utilities, minimum 3 inches (75 mm) wide and 4 mils (0.1 mm) thick, continuously inscribed with a description of utility, with metallic core encased in a protective jacket for corrosion protection, detectable by metal detector when tape is buried up to 30 inches (750 mm) deep;

colored as follows:

Red: Electric.

Blue: Water systems.

PART 3 – EXECUTION

3.01 PROTECTION

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

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

3.02 EXCAVATION

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

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

C. 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.

D. 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.

3.03 BEDDING & BACKFILL

A. 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.

B. 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.

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

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

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

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

G. Bury I.D. Tape a minimum of 6 inches and a maximum of 18 inches below ground level. Follow tape manufacturer’s instructions.

SECTION 02370

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.

2.01 SILT FENCE

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

B. Straw bales shall be approximately 36 inches in length, rectangular shape and weigh approximately 65 pounds.

2.02 EROSION CONTROL MAT

A. Erosion control mat shall be high strength, fully biodegradable 700 Gram erosion control matting. LM700 Coir Mat or Approved Equal.

3.01 INSTALLATION

A. All erosion control devices shall be installed prior to commencing clearing & grubbing operations.

B. Install silt fence and coir matting in accordance with manufacturer’s instructions. Caution shall be used when installing along streams and creeks. Install at locations as directed by the COR.

3.02 MONITORING

A. 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.

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

3.03 BASIS OF PAYMENT

PAY ITEM PAY UNIT

Erosion and Sedimentation Control ………...……….………..…………...…Lump Sum

SECTION 02720

AGGREGATE BASE

A. This work consists of furnishing and placing aggregate base between backfill and asphalt paving, concrete slab, concrete walk, or structure.

2.01 AGGREGATE

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

B. Pad surfacing shall be #78 washed crushed stone.

3.01 HANDLING & STORAGE

A. Aggregates shall be handled in such a manner as to minimize segregation.

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

3.02 CONSTRUCTION

A. The aggregate base course shall be spread in a uniform layer, and to a loose depth that shall have the required thickness when compacted. The aggregate shall be moistened or dried to a uniform moisture content suitable for compaction. The compaction equipment shall be operated over the full width of each layer until visual displacement ceases, but not fewer than three passes.

B. The thickness of the compacted base shall not vary more than 1/2 inch from the required thickness shown on the drawing.

SECTION 02920

PERMANENT AND TEMPORARY SEEDING

A. This section covers the requirements for permanent and temporary seeding of areas of disturbance within the project area.

2.01 PERMANENT SEEDING – Spring and Summer (February 1st. to Aug 1st.)

B. Seeding mix of 8-10 lbs /acre. Use a nurse crop with the mix, 2-4 lbs/acre of annual ryegrass or 20-25 lbs of oats.

2.03 FERTILIZER

A. Fertilizer shall be 17% Nitrogen, 17% Phosphorus, 17% Potassium

2.04 MULCH

A. Mulch shall be grain straw applied at a rate of 2 tons per acre.

3.01 APPLICATION

A. Temporary seeding shall be applied to any areas of disturbance that shall be left uncovered for more than 10 days or as directed by the COR.

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

C. Seed shall be uniformly sown over the area at the rate specified by means of a drop-type spreader.

3.02 BASIS OF PAYMENT

Incidental to Erosion and Sedimentation Control.

Plant Type % of Mix Virginia Wild Rye Elymus virginicus Grass 20 Upland Bent Grass Agrostis perennans Grass 5

Little Bluestem Schizachyrium scoparium

Grass 35

Indian Grass Sorghastrum nutans

Grass 15

Roundhead Lespedeza Lespedeza capitata

Legume 10

Partridge Pea Chamaecritsa fasciculata

Annual legume 15

SECTION 03100

CONCRETE FORMWORK

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

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

B. Form oil shall be nonstaining type.

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.

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

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

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

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.

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

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.

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.

SECTION 15100

VALVES & VALVE BOXES

A. This work includes furnishing and installing all valves and associated fittings at the locations shown on the drawings.

2.01 VALVES

A. All valves shall be designed to a minimum working pressure of 200 psi.

B. Valves shall be Mueller 300 Ball Curb valve with 110 connection.

2.02 VALVE BOXES

A. Valve boxes shall be provided for all valves installed below grade. All valve boxes shall be cast iron screw type with a base to fit the valve yoke with a removable cover and the word “water” cast theron.

B. Valve boxes shall be Tyler Union Screw type or approved equal.

A. Install valve boxes with all buried valves as shown on the drawings.

B. Valve boxes shall be supported such that the yoke does not rest directly on the waterline.

SECTION 15200

HYDRANTS

PART 1 – GENERAL

1.01 WORK INCLUDED

A. This section includes furnishing and installing yard hydrants.

2.01 YARD HYDRANTS

A. Yard hydrants shall be Woodford Model U34.

3.02 INSTALLATION

A. Install all fixtures to the details shown on the drawings and in accordance with manufacturer’s recommendations.

SECTION 15213 WATERLINES

A. This work includes furnishing and installing buried waterlines as shown on the drawings.

2.01 PIPE

A. Plastic pipe shall be SCH. 40 PVC glued joints.

2.02 FITTINGS

A. Fittings shall be of the same type and manufacture as the pipe being jointed.

B. All plastic fittings requiring threading shall be Schedule 40 PVC, female threads.

2.03 UNDERGROUND DETECTION AND MARKING TAPE

A. Section 02315.

A. Pipe and fittings shall be installed in accordance with the manufacturer's installation guide for the type being installed and as shown on the drawings.

B. Waterlines shall be buried a minimum of 30” deep. Where 30” of cover cannot be maintained, pipe sleeving shall be installed. Pipe sleeve shall be same material as waterline, but of larger size.

C. Trenching and backfill shall be in accordance with Section 02315.

3.02 TESTING

A. The waterline shall be tested at the test pressure specified herein.

B. Pressure tests shall be run after thoroughly flushing the waterline.

C. Air testing shall not be allowed.

D. Procedure

1. The test section shall be partially backfilled or otherwise held in place sufficiently to stabilize pipe under a pressure test. Joints shall remain uncovered until testing is satisfactorily completed.

2. Slowly fill each valved or plugged test section of pipe with water and apply a water test pressure of 100 psi.

3. Maintain the approved test pressure for a minimum of two hours. The COR shall be present during the testing period.

4. Inspect all joints for leakage.

5. If leaks occur, replace defective pipe as required and repeat the pressure test until no leakage is evident.

6. No paints, asphalts, tars, enamels, or other types of pipe compounds shall be used to eliminate leaks.

7. Necessary apparatus required for testing including pump, auxiliary tank, pipe connections, gauges, and meters shall be furnished by the Contractor.

3.03 BACKFILLING

A. Contractor shall not backfill any trenches until approved by the COR. Backfilling shall meet the requirements of Section 02315.

SECTION 15214

DISINFECTION OF WATERLINES

A. This section covers disinfection requirements for new potable water systems or existing systems extended, damaged, repaired, broken, or otherwise altered due to construction activities.

PART 2 – PRODUCTS

2.01 MATERIALS

A. Chlorine Compounds

1. Gaseous Chlorine - this form of chlorine shall not be permitted.

2. Hypochlorites - liquid or powder form.

3. Chloramines - liquid form.

4. Chlorinated Dimethylhydantoin - powder form.

5. Other liquid or power chlorine compounds approved by the COR.

PART 3 - EXECUTION

3.01 DISINFECTION

A. Disinfection shall be performed after flushing and pressure testing are completed and approved by the COR.

1. Dosage - disinfecting material shall be placed in the system, at a location approved by the COR, to provide approximately 100 mg/1 of total chlorine in the water system.

2. Procedure - the entire system including storage tanks where applicable shall be filled with the disinfecting solution. All taps, hydrants, and other outlets shall be opened and left open until a strong odor of chlorine is noticeable in the water coming from each other, after which, the taps, hydrants, and other outlets shall be closed.

3. Test Period - chlorinated water shall remain in the system a minimum of 24 hours.

4. Bacteriological Examination - after the system has been disinfected and flushed to 2 ppm residual, two (2) bacteriological water samples shall be taken by the contractor or their representative from tap points at opposite sides of the system. The samples shall be tested at a laboratory certified by the State of North Carolina for potable water Bacteriological Testing. The results of both samples must be negative (free of coliform organisms) to obtain acceptance. The COR shall be proved with copies of all test results forms.

5. The contractor shall pay all transportation and laboratory costs associated with the bacteriological examination