County-Standard-Specifications-JULY-2025.pdf

Public Works Division

Standard Specifications

Last Revision

JULY 2025

Prepared by:

Greenville County Engineering & Maintenance Division

301 University Ridge, Suite S-3000

Greenville, SC 29601

(864) 467-7017

SITE CLEARING

SECTION 02110

RELATED DOCUMENTS: Attention is directed to related sections of the Specifications, as they pertain to to the guidelines, materials, and methods described in this section. Also, the General Provisions and Special Provisions of the Contract shall apply to all Sections of the Work.

1.0 SCOPE

a. General: This section includes furnishing all labor, materials, equipment, and all services necessary for any clearing, and/or clearing and grubbing required within the areas of operation.

b. Traffic Control: The Contractor shall be responsible for conducting all work in streets, roads and highways in accordance with any and all Regulatory Authorities current requirements. As a minimum, for any work in State

Highways, the Contractor shall meet the requirements of Traffic Controls for Street and Highway Construction

Part V of the South Carolina Manual on Uniform Traffic Control Devices for Streets and Highways - 1982, latest revision.

2.0 CLEARING AND GRUBBING

a. Clearing - On all areas where grading, excavating and filling are to be done, and on all border areas, clearing shall consist of cutting, removal and disposal of all trees, brush, debris and other objectionable material resting on or protruding above ground within the limits of grading.

b. Grubbing - Grubbing shall consist of the removal and disposal of stumps, roots, and other objectionable organic material within the limits of grading. Stumps shall be removed entirely. Roots and matted roots shall be grubbed out at least 18 inches below the existing surface.

c. Disposal of Materials - All materials removed as a result of clearing and grubbing operations shall be removed from and disposed of off-site.

d. Trees - Those trees that are indicated to be saved shall be carefully protected during grading operations. If the trees are damaged or destroyed due to the Contractor's negligence, they will be replaced at the fair market value determined by the County Engineer and paid for by the Contractor.

3.0 CERTIFICATION

The clearing and grubbing operations shall be certified by the County Engineer prior to rough grading, filling, or as required by Local Government Agencies.

END OF SECTION

EARTHWORK

SECTION 02200

RELATED DOCUMENTS: Attention is directed to related sections of the Specifications, as they pertain to the guidelines, materials, and methods described in this section. Also, the General Provisions and Special Provisions of the Contract shall apply to all Sections of the Work. For the purpose of these specifications, the "County Engineer" shall mean the County Engineer or the County Engineer's representative, which shall include the County project manager, project inspector, or private testing firm hired by the County to oversee the earthwork operations.

a. General: This section includes furnishing all labor, material, equipment, and all services necessary to complete the earthwork within the project site including but not limited to road right-of-way, trenches, fill and/or cut slopes as shown on the drawings and as herein specified. The scope of the project shall include but not be limited to the following:

1. Clearing and grubbing.

2. Backfilling and compaction.

3. Demolition of areas shown on drawings including but not limited to concrete, asphalt, walls, structures and pipe.

4. Provide and place any additional material if needed, to bring existing grades to new grades.

5. Temporary drainage of site.

6. Rock removal and replacement.

7. Trenching for utilities and drainage.

b. Contractor Verification: The Contractor shall visit the job site prior to the submission of the proposal to verify the actual conditions with those shown on the working drawings.

c. Limitations & Tolerances: Excavation and earthwork under this contract will be limited to rough grading the subgrade of roads in accordance with plans, details and specifications. Rough grading shall be within 0.1' (one-tenth of a foot) plus or minus making allowances for topsoil, road surfacing, etc.

d. Notification of Project Start: The Contractor shall notify the County Engineer seven (7) days prior to the beginning of grading operations.

e. Stockpiling of Topsoil: Topsoil shall be removed to its entire depth from all areas to be filled, excavated, or used for borrow and stockpiled at convenient locations approved by the County Engineer.

f. Maintenance of Reference Points: All reference points, property markers, right- of-way markers, etc., shall be carefully maintained. If disturbed or destroyed, the Contractor shall accurately replace same at his expense.

g. Protection of Existing Utility Lines: Existing utility lines shall be protected from damage during construction operations, and shall be repaired to the satisfaction of the Utility and County Engineer at the Contractor's expense, if damaged.

h. Traffic Control: The Contractor shall be responsible for conducting his work in streets, roads, and highways in accordance with the requirements of the applicable Regulatory Authorities. As a minimum, for any work in State

Highways, the Contractor shall meet the requirements of Traffic Controls for Street and Highway Construction and Maintenance Operations, Part V of the South Carolina Manual on Uniform Traffic Control Devices for

Streets and Highways - 1982, latest revision.

2.0 TESTING

a. Scheduling and Coordination: The Contractor shall arrange for soil compaction testing to be performed by an independent Geotechnical testing firm at the contractor's expense for any areas which are deemed questionable by the County Engineer.

b. Proof-rolling: Prior to paving, the Contractor shall proof-roll the roadway in the presence of the County

Engineer. A fully loaded tandem dump truck or water truck shall be used to identify any unstable areas of base material. The unstable base material shall be promptly removed, replaced with suitable material, and recompacted until the proof-roll is satisfactory.

c. Additional Testing: Additional tests will be paid for by the Contractor for materials which do not meet the specifications.

3.0 STRIPPING

a. General Requirements: The entire area within the limits of grading shall be excavated to a depth sufficient to remove all vegetable matter, sod, muck, rubbish and other unsuitable material. Topsoil material from stripping operations shall be placed separate from other excavated materials and piled free of roots, stones, and other undesirable material for use in fine grading operations.

4.0 STOCKPILING TOPSOIL

a. General Requirements: Topsoil shall be removed to its entire depth from all areas to be filled, excavated, or used for borrow and stockpiled at convenient locations approved by the County Engineer.

5.0 PLACING TOPSOIL

a. General Requirements: Topsoil shall be placed on all shoulders, slopes, ditches and other earth areas to be grassed after grading. Topsoil shall be placed uniformly to a compacted depth of not less than 4". Soil material shall be free from clods, rocks, roots and other objectionable materials which might hinder subsequent grassing and mowing operations.

6.0 PREPARATION OF GROUND SURFACE FOR FILL

a. General Requirements: Sloped ground surfaces steeper than 1 vertical to 4 horizontal on which fill is to be placed shall be plowed, stepped or benched, or broken up as directed, in such manner that the fill material will bond with the existing surface. Prepared surfaces on which compacted fill is to be placed shall be wetted or dried as may be required to obtain the compaction specified.

7.0 PROOF ROLLING PRIOR TO FILLING

a. General Requirements: After any required clearing, grubbing and stripping of topsoil has been accomplished, and before beginning any earthwork operations, all areas to receive compacted fill, shall be proof rolled to detect any soft areas that may exist. A 4-wheel pneumatic tired roller of not less than 25 tons, or its equivalent, shall be used for this operation. At least 4 passes shall be made, (2) in each of the two directions at right angles. Any soft areas thus disclosed that do not harden up after successive passes of the roller shall be called to the attention of the County Engineer. The County Engineer may require the areas to be under cut and replaced with properly compacted material.

8.0 FILLING

a. Embankments: Approved material removed from the excavation shall be used in forming the fill. Fill material shall be free from roots, other organic material and trash, and from stones having a maximum dimension greater than 6 inches. No frozen material will be permitted in the fill. Soil material for fill shall be placed in successive horizontal layers of not more than 6 inches in loose depth for the full width of the fill embankment cross section.

Each layer of fill or embankment shall be compacted by rolling with an approved tamping roller, vibrating roller or other compaction equipment, whichever is best suited for the types of soil encountered.

b. Trenches: Place backfill in not more than 6" thick compacted lifts, except as specified otherwise, and each lift shall be compacted as specified hereinafter. Backfill adjacent to structural elements shall be placed, as far as practicable, as the adjacent structural elements have been completed and accepted. Backfilling against concrete walls shall be done only after the walls have been adequately shored or have cured to sufficient strength to withstand the soil pressure. Backfilling of trenches shall progress as rapidly as the construction, testing and acceptance of the work permits. In backfilling pipe trenches, compact fill in 6" thick compacted lifts to a depth of 12" over the top of the pipe; backfill and compact the remainder of the trench as specified hereinafter. For trenches excavated in paved areas, place the backfill in not more than 6" compacted lifts to the top of the trench.

For trenches excavated in unpaved areas place and compact backfill in 12" compacted lifts to the top of the trench.

c. Compaction: Each layer of fill or embankment shall be compacted to not less than 95% of maximum density at optimum moisture content. The upper 18" of fill under roads shall be compacted to 100% of this Specification.

1. The method of test for maximum density shall be in accordance with ASTM D-698 (Standard Proctor Test).

The material to be compacted shall be of the proper moisture content to obtain the prescribed density.

Wetting or drying of the material and manipulation to secure a uniform moisture content throughout each layer will be required.

2. When compaction is suspended for several days, before resuming operations, the existing soil surface shall be plowed if deemed necessary by the County Engineer. No allowance in payment will be made for this plowing.

9.0 FIELD CONTROL OF FILLING OPERATIONS

a. Testing: The Contractor shall retain the services of an independent testing laboratory to perform all tests required under this section. In areas where the density of the fill or embankment is specified, field density tests shall be performed in sufficient number to insure that the specified density is being obtained. Areas of the site in which testing reveals compaction below the specified density as stated hereinbefore shall be reworked by the

Contractor until satisfactory to the County Engineer. The cost of the initial test shall be paid for by the

Contractor unless other arrangements have been made; and subsequent tests required as a result of improper compaction shall be paid for by the Contractor.

10.0 EXCAVATION

a. General Requirements: Excavation of every description regardless of material encountered within the grading limits of the project shall be performed to the lines and grades indicated or necessary. Suitable excavated material shall be transported to and placed in fill areas within limits of the work. Surplus excavation material not required for fill shall become the responsibility of the Contractor and shall be removed from the site or disposed of as directed by the County Engineer. The construction, excavation and filling shall be performed in a manner and sequence that will provide drainage at all times. When required, the Contractor shall provide temporary drains, ditches, pumps, drainage lines, or other equipment to intercept, divert, or remove water which may affect the prosecution or condition of the work. Water shall be removed from the site to the satisfaction of the County

Engineer.

b. Classification: Excavation shall pertain to cuts and fills, and shall be classified as one of the following: site excavation, muck excavation, borrow excavation, stripping, surplus excavation, water course and ditch excavation, and rock excavation. Site excavation, stripping, surplus excavation, and water and ditch excavation shall be included in the unit prices for various other pay items, but will not be considered as individual pay items. Borrow excavation, muck excavation, and rock excavation will be treated as individual pay items. Rock excavation shall be such material which cannot be removed by means other than by explosives or air hammers.

Materials which can be removed by ripping shall not be considered rock excavation. Classification of excavation which is disputed shall be determined by the County Engineer. It shall be the Contractor's responsibility to notify the County Engineer when rock excavation or muck excavation is encountered.

c. Notification for Rock Excavation: It shall be the Contractor's responsibility to notify the County Engineer when rock excavation is encountered. The Contractor will not be credited for any rock quantities removed before such notice is given. The County inspector must measure rock quantities before the excavation is backfilled in order for credit to be given and payment to be made.

d. Insurance for Blasting: If conditions are such that blasting or any use of explosives is required, the Contractor, prior to blasting, shall submit to the County Engineer satisfactory evidence of blasting and explosive insurance in the amounts of bodily injury and property damage insurance required in the Special Conditions and shall provide to the satisfaction of the County Engineer the experience and capability of the Contractor's organization to safely handle and perform such operations.

e. Qualifications and Safety for Blasting: Handling and storing of blasting materials shall be performed only by qualified persons skilled in such work. Adequate precautions shall be taken to prevent accidents, injury to persons or damage to property. Qualifications of blasting operation personnel and safety precautions shall be in full compliance with all codes governing such operations and shall be approved by the County Engineer. Full responsibility for all blasting operations shall remain with the Contractor, and he shall make good any damage that may result.

f. Trenches: Excavate for trenches to depth indicated or required to establish indicated flow lines or invert elevations. Maintain uniform width required for particular item to be installed, including width to provide adequate working room and compaction or as directed by the Engineer. Rock shall be excavated to a depth of 6 inches below the invert and 12 inches on each side of all structures or utilities.

11.0 EXCESS MATERIAL AND BORROW

a. Disposal of Excess Material: Any excess material from excavation shall be disposed of by the Contractor at the

Contractor's expense.

b. Dumped Material: The dump shall be uniformly piled, with top flattened and edge sloped to present a neat appearance and permit drainage. Silt fencing shall be installed around the stockpile as necessary for erosion and sedimentation control.

c. Approval of Fill Material: The Contractor shall furnish all material required for fill work. Fill material shall be approved by the County Engineer prior to filling operations.

d. Offsite Borrow: When necessary to borrow material for filling, the Contractor shall obtain fill material from offsite unless directed otherwise by the County Engineer.

12.0 GRADING

a. General Requirements: Grading of all areas within the project including excavated and fill sections and adjacent transition areas shall be reasonably smooth, compacted and free from irregular surface changes. The Contractor shall protect newly graded areas from action of the elements. Any settlement or washing which occurs prior to acceptance of the work shall be repaired and grades re-established to required elevations and slopes. Fill to grade levels any areas where settlement occurs. This fill material shall be placed in accordance with the articles as previously described.

b. Spreading of Topsoil: Topsoil shall be uniformly spread to a minimum depth of 4" over all earthen areas disturbed during construction.

13.0 DRAINAGE

a. General Requirements: Drainage, both temporary and permanent, shall be constructed and maintained during the performance of the work. Existing drains, culverts, and ditches not interfering with new work shall be kept clean and operating during construction operations. The surface of unfinished fills shall be bladed smooth to a crown or grade at the conclusion of the day's work or before shutdown for any cause to permit water runoff. Fill that has become saturated with water because of improper drainage shall be removed to a depth determined by the

County Engineer. Such saturated fill shall be disposed of as directed by the County Engineer, or reconditioned to conform to these specifications. The Contractor shall control grading so that ground is pitched to prevent water from running into excavated areas and provide all pumping required to keep excavated areas free of water. Should springs or running water be encountered in excavation, the County Engineer shall be notified immediately. The Contractor shall provide free discharge of such water by providing trenching which shall drain to an appropriate point of disposal.

14.0 REMOVAL AND DISPOSAL OF UNSUITABLE MATERIAL

a. Definition: Unsuitable material shall be defined as any muck material or other objectionable excavated material which is deemed unsatisfactory for road construction purposes or pipe backfill, based on the judgment of the

County Engineer. Unsuitable material does not include stripping from clearing and grubbing operations or other excavated materials not intended for roadway fill or pipe backfill.

b. Removal and Disposal: Removal of unsuitable material shall include complete removal and disposal. If directed by the Engineer, unsuitable materials may be blended with suitable soils and used for non-structural fill in approved areas. All organic and otherwise objectionable materials removed as a result of stripping and removal of unsuitable material not intended for road construction or pipe backfill as described in this section shall become the responsibility of the Contractor and shall be removed without charging as muck excavation.

16.0 SUBGRADE ELEVATIONS

a. Finished Elevations: The grading elevations shown on the drawings are finished elevations.

b. Roadway Subgrade Elevations: In roadway sections, the subgrade elevations will be below finished elevations by the thickness of the paving.

17.0 EROSION AND SEDIMENTATION CONTROL

a. General Requirements: Erosion and sedimentation control measures as shown on the drawings or as required by local ordinances shall be installed and operational prior to starting any work on the project site.

EROSION CONTROL

SECTION 02270

RELATED DOCUMENTS: Attention is directed to related sections of the Specifications, as they pertain to to the guidelines, materials, and methods described in this section. Also, the General Provisions and Special Provisions of

a. General: The work includes the provision of temporary erosion control measures to prevent the pollution of air, water, and land. Installation of temporary erosion control features shall be coordinated with the construction of permanent erosion control features to assure effective and continuous control of erosion.

2.0 CONSTRUCTION

a. Gravel Construction Entrance: Provide as indicated, a minimum of 6 inches thick, at points of vehicular entrance and exit on the construction site. Gravel shall be as specified in S.C. Highway Department, "Standard

Specifications for Highway Construction", Section 305 for Composite Mixture Macadam Base Course.

b. Dust Suppression: ASTM D-98 calcium chloride, magnesium chloride, or other standard manufacturer's products designed for dust suppression. Apply dust suppressors in accordance with manufacturer's instruction. Protect treated surfaces from traffic for a minimum of 2 hours after treatment. Repeat application of dust suppressors as required to control dust emissions.

c. Sediment Fence: Install posts at the spacing indicated, and at an angle between 2 degrees and 20 degrees towards the potential silt load area. Do not attach filter fabric to existing trees. Secure filter fabric to the post and wire fabric using staples, wire, or hog rings. Imbed the filter fabric into the ground as indicated. Splice filter fabric into the ground as indicated. Splice filter fabric at the support pole using a 6 inch overlap and security seal. Top of the filter fabric shall have a 1 inch tuck or a reinforced top end section. Preassembled silt fences may be used as approved by the County Engineer.

1. Posts: 4 inch by 4 inch wood posts, minimum 3 inch diameter wood, or 1.33 pound per linear foot steel posts.

Posts shall be minimum 5 feet long.

2. Wire Fabric: ASTM A-185, 6 by 6, minimum 14 gage.

3. Filter Fabric: A woven or nonwoven polypropylene, nylon, or polyester containing stabilizers and/or inhibitors to make the fabric resistant to deterioration from ultraviolet light. Filter cloth shall be of the type recommended by its manufacturer for the intended application.

4. Straw Bales: Constructed from grain straw or hay with each bale bound together with binding wire or twine.

Posts shall be ASTM A-615, 1-1/2 inch diameter wood posts or 1.0 pound per linear foot steel posts. Imbed the bottom row of bales in a 4 inch deep trench and place straw bales tightly abutting each other. Bales shall be placed so the bindings are horizontally oriented around the bales, wire adjoining bales together. Anchor each bale with two stakes, driving the first stake towards the previously laid bale. Wedge straw in gaps between bales. After the bales are staked, the excavated soil from the trench shall be backfilled against the straw bales to ground level on the downhill side and to 4 inches above ground level on the uphill side.

d. Gravel Dam and Silt Trap: Provide as indicated, adjusting dimensions as directed by the County Engineer to fit grading and location.

1. Riprap: SCHD "Standard Specifications for Highway Construction", Section 804, Stone for Hand Placed

Riprap and ranging in size from 3 inches to 6 inches.

2. Filter Stone: #5 Washed Stone.

e. Erosion Control Matting: Jute, excelsior, straw, or paper matting that has not been bleached or dyed. Provide matting in minimum 4 foot widths. Staples for anchoring the matting shall be minimum throat width of 1 inch minimum length of 6 inches after forming. Place matting in the direction of the flow of water. The up channel matting end shall be placed in a narrow trench a minimum of 5 inches deep. Where one roll of matting ends and a second roll begins, the end of the upper roll shall be brought over the buried end of the second roll to provide a 6 inch overlap. Where matting widths are laid side by side, the overlap between matting shall be 4 inches.

Provide check slots every 50 feet longitudinally in the matting. Construct check slots by providing a narrow trench 5 inches deep and folding the matting down into the trench, across the bottom of the trench, and then back up the trench to the existing ground. Backfill and compact the trench using the excavated material from the trench. Staple matting ends, junctions, and check slots at 10 inches on center. Staple matting outer edges, overlaps and the center of each matting strip at 3 feet on center. Install excelsior matting with the woven fabric on top.

f. Temporary Seeding: Within 48 hours after attaining the grading increment specified herein, provide seed, fertilizer, and mulch on graded areas when any of the following conditions occur:

1. Grading operations stop for an anticipated duration of 30 days or more.

2. Provide on the slopes of cuts and fill slopes for every 5 foot increment of vertical height of the cut or fill.

3. When it is impossible or impractical to bring an area to finish grade so that permanent seeding operations can be performed without serious disturbance from additional grading.

4. When an immediate cover is required to minimize erosion, or when erosion has occurred.

5. Provide on erosion control devices constructed using soil materials.

g. Temporary Seeding Operations: Temporary seeding operations shall consist of the following:

1. Procedure: Loosen subgrade to a minimum depth of 4 inches. Uniformly apply the seed, fertilizer, and mulch at the specified rates. Roll the seeded area after applying seed and fertilizer. Do not seed or fertilize when the County Engineer determines conditions are unfavorable. Provide water to promote turf growth.

2. Seed: Provide certified seed type and quantity (pounds per acre) as follows:

SEED TYPE MAY 1 - SEPT. 1 SEPT. 1 - MAY 1

Annual Rye 100 lbs/Ac 150 lbs/Ac

Common Bermuda 50 lbs/Ac ---

3. Fertilizer: Apply 10-10-10 fertilizer at the rate of 1000 pounds per acre.

4. Mulch: Spread hay or straw mulch at the rate of 1.5 tons per acre and anchor by crimping mulch with a disc.

Provide in an air dried condition for placement with commercial mulch blowing equipment.

5. Alternate Bid: Temporary seeding shall be bid as an alternate bid item to be provided only as required above.

h. Maintenance and Inspection: Inspect erosion control devices after each rainfall and daily during prolonged rainfall. Remove sediment deposits after each rainfall or when sediment reaches approximately one-half the barrier height or storage capacity. Immediately repair damaged erosion control devices and damaged areas around and underneath the devices. Maintain erosion control devices to assure continued performance for their intended function. Modify the erosion control plan as required to control problem areas noticed after each inspection.

i. Clean Up: At the completion of the job, or when directed by the County Engineer, erosion control devices shall be removed. Erosion control devices and areas immediately adjacent to the device shall be filled (where applicable), shaped to drain and to blend into the surrounding contours, and grassed or landscaped as specified.

STORM DRAINAGE

SECTION 02720

RELATED DOCUMENTS: Attention is directed to Divisions A (Bidding Requirements), B (Contract

Documents), and 1 (General Requirements), which are binding in their entirety on this portion of the work and in particular to paragraphs concerning materials, workmanship, and substitutions.

General Conditions of the Contract and Special Conditions of the Contract shall apply to all Sections of the Work.

a. General Requirements: This section includes furnishing all labor, materials, and equipment for the installation of all drainage lines, including headwalls, inlets, catch basins, and other special appurtenances and structures as required for this project, shown on the drawings and specified herein.

b. Pipe Layout and Elevations: The layout of underground lines and invert elevations at governing points are shown on the drawings.

c. Inspection Required Before Backfilling: All pipe shall be inspected by the County inspector prior to backfilling operations.

d. Invert Elevations: All grades shown as pipe elevations are to the bottom of inside of pipe, unless otherwise noted.

e. Connections and Changes in Direction: All connections and changes of direction shall be made at inlets as shown.

f. Material Specifications: Where more than one material for an item is specified, the material used shall be as noted on the drawings or specified elsewhere in the Contract Documents.

g. Traffic Control: The Contractor shall be responsible for conducting all work in streets, roads, and highways in accordance with any and all Regulatory Authorities' current requirements. As a minimum, for any work in State

Highways, the Contractor shall meet the requirements of Traffic Controls for Street and Highways Construction and Maintenance Operations, Part V of the South Carolina Manual on Uniform Traffic Control Devices for

Streets and Highways - 1982, latest revision.

2.0 MATERIALS

Note: All ASTM references shall be the latest version for the specific product.

a. Concrete: Concrete shall be 3000 psi mix using Portland Cement ASTM C-50 Type 1, sand ASTM C-33 and coarse aggregate ASTM C-33.

b. Rebar: Reinforcing bars shall conform to ASTM A 615, new billet steel, intermediate grade.

c. Water: Water shall be clean, free from oils, acids, alkalis, or organic or deleterious substances.

d. Reinforced Concrete Pipe (RCP): Reinforced concrete pipe shall be Tongue-and-Groove, Class III-Wall B, unless otherwise indicated on the drawings and shall conform to requirements of ASTM C-76.

e. Gray Iron Castings: Frames, solid covers and grates for drainage structures shall be gray iron conforming to

ASTM A-48, size as indicated, free from blow holes, porosity, hard spots, shrinkage distortion or other defects, well cleaned and coated with asphalt paint which shall result in smooth coating, tough and tenacious when cold, not tacky and not brittle. Bearing surface between frame and cover or grate shall be machined to prevent rocking and rattling.

f. Steps: Steps for manholes and drainage structures more than 4' deep shall be manufacturer's standard, spaced and embedded per OSHA requirements and approved by the Owner/Engineer.

g. Welded Wire Fabric: Welded wire fabric shall conform to ASTM A-185.

h. Masonry: Masonry materials for drainage structures are detailed on plans as concrete brick. Concrete manhole block and precast sections are equally acceptable, subject to design approval by the Owner/Engineer.

1. Concrete Brick: Concrete brick for storm inlets and catch basins shall be standard size, ASTM C-90, Class

A.

2. Concrete Block: Concrete block for storm drainage manholes shall comply with ASTM C-139.

3. Precast Manholes: Precast concrete manhole sections shall be 4000 psi concrete, tongue and groove, steel fabric reinforced, cement mortar joints bitumastic sealed, in accordance with ASTM C-478. Precast manholes shall have a conical top, coursed with brick. Precast bottoms are permissible. Handling holes shall be plugged with mortar or stoppers.

4. Portland Cement: Portland Cement shall be by an approved manufacturer, ASTM C-150, Type I.

5. Sand: Sand shall comply with ASTM C-144.

6. Lime: Lime shall be hydrated, ASTM C-207, Type N.

7. Water: Water for masonry materials shall be potable, free of suspended matter, injurious amounts of acids, or alkalis, and containing no industrial or domestic wastes.

8. Mortar: Mortar for drainage structures shall be 1 part of Portland Cement, 10% hydrated lime, 2 parts sand by volume, mixed with sufficient water to form a plastic mortar.

9. Flexible Butyl Resin Sealant: Flexible Butyl Resin Sealant shall comply with AASHTO specification M-198

B, similar to Butyl Tite or ConSeal or approved equal.

i. PVC Pipe:

1. Polyvinyl Chloride (PVC) Pipe and Fittings (10-Inch Diameter and Smaller): ASTM D-3033 or ASTM D-

3034, SDR 35, with ends suitable for either solvent cement or elastomeric gasket joints.

2. Polyvinyl Chloride (PVC) Perforated Pipe and Fittings: ASTM D-2729 with one-half inch diameter holes 5 to 8 inches on center, 120 degrees apart.

j. 2.17 Corrugated Aluminum Pipe and Fittings: Fed. Spec. WW-P-402 or AASHTO M-196, Class I or II, circular and arched; minimum thickness of metal shall be 18 gage.

k. 2.18 Corrugated Steel Pipe and Fittings: Fed. Spec. WW-P-405 and AASHTO M-36, Class I or II, circular and arched. Minimum thickness of metal shall be 18 gage. Pipe with annular corrugations shall be fully bituminous coated, half paved, for pipe diameters 18 inches and less. Pipe with helical corrugations shall be fully bituminous coated for pipe diameters 18 inches and less. Pipe larger than 18 inches diameter shall be fully bituminous coated and fully paved. Helical-corrugated pipe and fittings, when used with pipe joints, shall have a minimum of two factory-rolled annular corrugations at each end.

l. Corrugated Metal Watertight Joints: Fed. Spec. WW-P-405 for steel pipe and WW-P-402 for aluminum pipe. The circumference of the coupling bands shall be provided with a 3 inch lap minimum. For tightening each coupling band, provide four 1/2 inch galvanized steel bolts. Gaskets shall be cylindrical in shape, fabricated of 3/8 inch thick by 6-1/2 inch minimum width rubber conforming to ASTM D-1056. Diameter of cylindrical gasket shall be 10 percent less than the nominal pipe diameter. On riveted pipe and fittings, omit the longitudinal seam rivets which would be under the coupling band and weld that portion of the seam. Coupling bands shall be of one or two piece construction and bituminous coated when specified for the pipe.

m. Filter Fabric: Woven or nonwoven polypropylene, nylon or polyester containing stabilizers and/or inhibitors to make the fabric resistant to deterioration from ultraviolet light. Filter cloth shall be of the type recommended by its manufacturer for the intended application.

n. Course Aggregate: The aggregate shall consist of washed crushed stone or gravel conforming to SCHD

"Standard Specifications for Highway Construction", Section 406.09.

o. Rip Rap:

1. Material Quality: Stones shall be hard quarry of field stone and shall be of such quality that they will not disintegrate on exposure to water weathering. The stone shall be suitable in all respects for the purpose intended and shall conform with SCHD "Standard Specifications for Highway Construction", Section 804 except as modified herein.

2. Hand Placed Rip Rap: Stone for hand placing to a thickness of 12 inches shall range in weight from a minimum of 25 pounds to a maximum of 150 pounds. At least 50 percent of the stone pieces shall weigh more than 60 pounds. The stone pieces, except spalls, shall have a minimum dimension of at least 12 inches.

Stone for hand placing to a thickness of 6 inches shall be no less than 3 inches in one dimension and no less than 6 inches in another dimension.

3. Dumped Rip Rap: Stone used in dumped rip rap shall be a quarried stone of reasonably uniform grading from the larger to the smaller pieces with the larger pieces preferable not above 24 inches in size.

4. Grouted Rip Rap: Grouted rip rap stone shall conform to the requirements for hand placed rip rap. The mortar for grout shall be composed of one part Portland Cement and three parts sand. The water content of the grout shall be such as to permit gravity flow into the interstices or voids with limited spading and brooming.

3.0 PIPE TRENCH EXCAVATION

a. Classification: Excavation shall be classified as defined in Section 02200.

b. Required Trench Dimensions: The trench shall be excavated by an approved method, to a depth to permit installation of the pipe along the lines and grades shown on the drawings. All side slopes for trench excavations shall be sloped by the Contractor to provide for safe working conditions by all personnel. The width of the trench shall be sufficient to allow thorough compacting of the backfill under and around the pipe. Where rock is encountered, the rock shall be removed to a depth below grade of at least 6 inches (6"), and the trench shall be refilled to grade with earth, sand, gravel, crushed stone or other suitable material as per the details on the drawings, firmly compacted to provide proper bedding for the pipe. Payment for rock will be to a depth of 6 inches below the invert and 12 inches on each side of the outside wall of the pipe.

c. Removal of Unsuitable Material: If directed by the Owner/Engineer, soft, mucky, or otherwise unstable or unsuitable material in the trench bottom shall be removed and replaced with crushed stone, or stabilized with crushed stone.

d. Notification of Rock or Muck Excavation: The Contractor shall notify the Owner/Engineer immediately if "Rock

Excavation" or "Muck Excavation" is encountered. Rock removal or backfill shall not proceed until directed by the Owner/Engineer. Section 02200, Article 10 Excavation shall apply to "Rock Excavation" in trenches.

4.0 BRACING AND SHEETING

a. General Requirements: The sides of all trenches and excavations shall be adequately braced and sheeted to protect personnel, structures and property from slides, cave-ins, or settlement and to maintain the work clear of all obstructions. Bracing, shoring and sheeting shall comply with all applicable safety regulations governing the work. Full responsibility for the design, type and strength of shoring, sheeting and bracing shall rest with the

Contractor.

5.0 DEWATERING

a. General Requirements: The Contractor shall do all pumping necessary for dewatering trenches and to provide safe, proper work conditions for installation of pipe and appurtenances. Pipe shall be installed on dry, stable trench bottoms.

6.0 BACKFILLING

a. General Requirements: Immediately after the pipes have been laid and checked, the trench shall be backfilled around the barrel of the pipe with fine materials, free, from large stones deposited in level layers no more than 6 inches (6") in depth, each layer to be thoroughly tamped and compacted before the next layer is deposited. Care should be exercised to avoid any wedging action or eccentric action upon or against any pipe or structure and to avoid any disturbance or damage to the work.

b. Backfilling in Traffic Areas: In roads, across sidewalks and driveways and at other places subject to vehicular traffic or other superimposed loads, trench backfilling material as specified above shall be compacted in 6 inch

(6") layers for the full depth of the trench and consolidated in such a manner to provide an unyielding foundation for vehicular traffic. Unless otherwise shown on the plans or required by governing authorities, the compaction density shall be equal to the density of the original adjacent material. However, the minimum compaction density shall be 95% of maximum density according to ASTM D-698, except that the upper 18 inches (18") under the roadway and parking lots shall be compacted to 100% of maximum density.

c. Backfilling in Other Areas Subject to Superimposed Loads: Material for the lower portion of the trench, above required pipe bedding material, shall consist of fine, loose earth, free of large clods, stones, vegetable matter, debris, and/or other objectionable material. It shall have a moisture content suitable for thorough compaction. It shall be deposited in horizontal layers not to exceed 6 inches (6") in thickness (before compaction) on each side of the pipe. Each layer shall be thoroughly tamped or rammed around the pipe with approved hand or power driven tools until enough material has been placed and compacted to provide a cover of not less than 18 inches

(18") over the top of the pipe, or as otherwise shown on the plans or as directed by the County Engineer.

Minimum compaction shall be 95% of maximum density according to ASTM D-698.

d. Backfilling in Areas Not Subject to Superimposed Loads: In all other areas not subject to superimposed loads, trench backfill may be placed from the level 18 inches (18") above the top of the pipe upward in 12 inch (12") layers with light compaction by mechanical tampers, and without damage to the pipe. Such backfill may contain coarser material than specified in Paragraph 6 (c) above, but shall be free from brush, trash, perishable matter, or stones larger than 6 inches (6") in any dimension.

e. Maximum Stone Size: No rock or boulders shall be used in the backfill for at least one foot (1') above the top of the pipe and in the upper 18 inches (18"). No stone larger than six inches (6") in its greatest dimension shall be used in the backfilling.

f. Insufficient Fill Quantity: Any deficiency in the quantity of material for backfilling the trenches, or for filling depressions caused by settlement, shall be supplied by the Contractor as part of the Scope of Work.

7.0 DRAINAGE LINE CONSTRUCTION

a. Installation of Pipe

1. General Requirements: Under no circumstances shall pipe be laid in water, on rock, or when trench conditions of weather is unsafe or unsuitable for such work. Each pipe shall be carefully examined by the

Contractor before being laid, and any defective or damaged pipe shall be removed from the site. Proper equipment shall be provided for lowering sections of pipe into trenches. The pipe shall be laid true to line and grade, beginning at the lowest point with the spigot end pointing in the direction of flow, with uniform bearing upon the pipe bed for the full length of its barrel. Raising the pipe off the subgrade (bridging) to obtain the proper elevation will not be allowed. Each section shall be securely attached to the adjoining sections by the method required for the type of joint used. When laying concrete pipe, all joints shall be thoroughly wetted with water and then filled with a stiff mortar composed of one part Portland Cement and two parts sand. The mortar shall be placed so as to form a durable water tight joint. The lower portion of the hub or groove of each section of pipe laid shall be thoroughly wetted and plastered on the inside with cement mortar of sufficient thickness to bring the inner surfaces of the abutting pipes flush and even. As each section of the pipe is put in place, the remainder of the joint so formed shall be thoroughly wetted and filled with mortar, and sufficient additional mortar shall be used to form a bead along the outside of the joint. The inside of the joint shall be wiped and finished smoothly. After the initial set, the mortar on the outside shall be protected from the air and sun with thoroughly wetted earth or burlap cover.

2. Optional Joint Sealant: As an option, each joint connection of pipe shall be made watertight using a flexible

Butyl Resin Sealant according to the manufacturer's specification.

3. Reinstallation of Substandard Pipe: Any pipe which is not in true alignment, is damaged, or which shows undue settlement after laying shall be removed and reinstalled without extra compensation.

4. Joint and Fitting Installation: Pipe joints and fittings shall be made up in strict accordance with the manufacturer's directions.

5. Laser Alignment Control: Laser beams shall be used for grading pipe trenches and placing pipe.

b. Drainage Structures

1. General Requirements: Drainage structures shall be constructed as shown on the drawings, walls of brick, plumb and true, bottoms of concrete.

2. Brickwork: All brick shall be wet before being laid in warm weather. Brick shall not be laid in freezing weather. The Contractor shall protect all brick work from the weather when storming or freezing; and at all times when necessary during the progress of the work.

3. Setting Frames: Cast iron frames shall be set in a full bed of mortar and to the elevation established by the

Owner/Engineer.

4. Backfilling: Backfilling around drainage structures shall be accomplished by methods and requirements as specified for backfilling pipe trenches.

c. Headwalls

1. General Requirements: Headwalls shall be constructed at locations indicated on the drawings, with the headwall details. Concrete and reinforcing bars shall be as specified.

d. Subdrain System

1. Procedure: Refill excavations cut below indicated depth with granular fill during placement of granular fill.

Trenches for underdrain shall be excavated to a width equal to 3 times the outside diameter of the pipe and to a depth as required to lay the pipe at the desired grade. Provide granular fill a minimum of one pipe diameter on each side of the pipe and on the bottom of the pipe. Place in 6 inch lifts up to the level indicated or directed by the Landscape Architect. The pipe shall be placed in the center of the trench and bedded firmly on the bottom course of aggregate. If bell and spigot type is used, the bell end shall be laid upstream.

Perforated pipe shall be laid with the perforations on the underside of the pipe. Lateral connections shall be made with suitable tee, wye, bend, reducer, or increaser fittings as required. The upstream end not terminating in a structure shall be capped, plugged, or fitted as directed by the Landscape Architect

2. Wrapping Perforated Pipe: Wrap PVC perforated pipe when indicated, with one layer of filter cloth, overlapping 6 inches at the longitudinal joint of the filter cloth. Wrap the filter cloth such that the edge of the outer layer points towards the bottom of the trench at the longitudinal joint and is in direct contact with the inner layer of the filter cloth. Obtain approval of filter cloth installation before placing fill. Place fill in a manner to prevent filter cloth damage or displacement.

3. Wrapping Drainage Trench: Provide a layer of filter cloth around the perimeter of the drainage trench. Filter cloth joints placed on the side of the drainage trench shall have the inner layer of filter cloth pointing towards the bottom of the trench. Unless specified otherwise, overlap filter cloth at joint a minimum of one foot. Repair damaged filter cloth by placing an additional layer of filter cloth over the damaged area, overlapping one foot in all directions.

e. Placing Rip Rap

1. Hand Placed Rip Rap: The thickness of hand placed rip rap shall be no less than that specified, measured perpendicular to the slope. The slope upon which this rip rap is to be placed shall conform with the cross section shown on the plans or as directed by the Landscape Architect. Depressions that may be filled in trimming and shaping shall be properly compacted. Rip Rap shall be firmly imbedded against the slope and the adjoining piece with the sides in contact and with well broken joints. The spaces between the larger pieces shall be filled with spalls of suitable size which shall be thoroughly rammed into place. The finished surface shall present an even, tight surface true to line, grade and section.

2. Dumped Rip Rap: Before placing of rip rap, the slopes and foundation trenches shall be constructed as necessary. The stone shall be handled or dumped into place so to produce a compact, well graded mass with a minimum percentage of voids. The material shall be placed to its full course thickness of 2 feet minimum, measured perpendicular to the slope, in one operation and in such manner that the slopes will be disturbed as little as possible. The larger pieces shall be well distributed and the finished layer of rock shall contain no segregated pockets of small pieces or groups of large pieces which would cause large open voids.

Rearranging of the individual pieces by mechanical equipment, or by hand, may be required to the extent necessary to obtain a reasonably well graded distribution of sized as specified above. The surface of the completed rip rap shall be reasonably uniform in appearance, free from excessive humps or depressions.

3. Grouted Rip Rap: The aggregate, and method of placing the rip rap for grouted rip rap shall be as specified for hand placed rip rap. After the rip rap has been placed and approved, all interstices or voids between the stone shall be filled with mortar to a depth of not less than 4 inches below the surface of the stone. The face or surface of the stones shall be left reasonably free of grout. Plastering of the rip rap will not be permitted.

The spaces between the stones shall be reasonably free of sand or other material and shall be wet during the placing of the grout.

f. Cleaning, Inspection and Testing

1. General Requirements: All storm lines, and drainage structures upon completion or at such time as directed shall be cleaned, inspected, and tested. The storm drain system shall have a true grade and line and shall be entirely clean and ready for use.

8.0 SITE CLEAN UP

a. General Requirements: The Contractor shall remove all excess material from excavations to points designated by the Owner/Engineer, and clean the site of the work of all debris collected during the construction.

FENCING AND GATES

SECTION 02830

RELATED DOCUMENTS: Attention is directed to related sections of the Specifications, as they pertain to the guidelines, materials, and methods described in this section. Also, the General Provisions and Special Provisions of

1.0 SCOPE OF WORK:

a. General Requirements: Furnishing all labor, materials, equipment and service required for the complete installation of new 4 foot high chain link fence surmounted with 3 strands of barbed wire as shown on the drawings and specified herein.

2.0 MATERIALS:

a. Fence Material: All fence material shall be hot dipped galvanized to produce a coating not less than 1.2 oz. Per square foot of base3 surface. Additionally, the fencing shall be 4’ high with green vinyl coating to match the existing sections.

b. Fabric: Fabric shall conform to the applicable requirements of ASTM A 392 for 2 inch mesh and No. 9 gauge.

End finish of fabric shall be twisted and barbed at both selvages.

c. Posts: Line posts shall be 2-1/2” O.D. standard pipe (Wt. 2/27 lbs. Per foot) or 2-1/4” x 1-7/8” High Carbon H-

Beams or C Post with minimum material thickness of .121”.

d. Rails: Top rail shall be 1-5/8” O.D. standard pipe (Wt.2/27 lbs. Per foot) or 1.625” x 1.25” channel section and shall be furnished in random lengths averaging not less than 20 ft., joined with extra long pressed steel sleeves, making a rigid connection but allowing for expansion and contraction.

e. Wire: Tension wire shall be No. 7 gauge galvanized coiled wire securely fastened to line and terminal posts.

f. Ties: Fabric Ties for attaching fabric to line posts and top rail shall be aluminum strip or wire.

g. End Posts: End and corner…