ATT_02a_Division_32_Exterior_Improvements.pdf

1 Division 32 – Exterior Improvements

DIVISION 32 – EXTERIOR IMPROVEMENTS

SECTION 32119 - ASPHALT PAVEMENT MILLING AND TEXTURING

32119.01 DESCRIPTION. Remove existing pavement by milling and texturing.

32119.02 MATERIALS AND EQUIPMENT. Provide a power-operated, self-propelled milling machine capable of:

1) Removing asphalt pavement to the required depth, profile, cross slope, and surface texture;

2) Accurately establishing profile grades by referencing from either the existing pavement or from an independent grade control;

3) Controlling cross slope;

4) Applying sufficient down-pressure to plane the milled surface; and

5) Effectively removing cuttings from the pavement and preventing dust from escaping into the air.

Provide supplemental equipment as necessary to remove material adjacent to curbs, railroad crossings, and other areas that cannot be removed by the milling machine. Additionally, provide a mechanical sweeper.

32119.03 CONSTRUCTION.

When the Contract requires a bottom-of-rut cut, remove only the amount of material necessary to acceptably texture the bottom of the rut. Where there are no ruts, remove only the amount of material necessary to obtain an acceptable texture.

Remove the material in successive cuts of approximately 1 to 1 1/2 inches, measured at the edge of the cutting drum. Complete each cut over the entire length and width of the area. Do not begin the next cut until the Engineer examines the area and determines that additional cutting is necessary.

When maintaining public traffic is not necessary, the Department may allow deeper cuts, provided the final cut does not exceed 1 1/2 inches and satisfactory results are obtained.

Provide an average depth of 0.20 inch between the high and low points on the milled pavement.

After milling and texturing, ensure that the finished surface conforms to the required grade and cross section and provides a smooth riding surface free from gouges, ridges, oil film, and other imperfections of workmanship. Do not allow the elevation of the longitudinal edges of adjacent cuts to differ more than 1/8 inch. Unless the Engineer allows, do not leave vertical longitudinal faces during non-working hours in areas exposed to public traffic. Limit the vertical longitudinal faces to 1 1/2 inches in height, and taper them in a manner the Engineer approves to avoid creating a hazard for traffic.

Remove excess millings and fines that have collected at the vertical longitudinal faces and thoroughly sweep up all millings. Load and haul away all materials swept up.

Repair pavement that is gouged, torn, or otherwise damaged during milling operations, and repair damage done to any other property of any kind including utility frames, grates, and covers.

32119.03.01 Surface Tolerance. Ensure that the finished surface after the final cut does not deviate more than 1/8 inch from a 10-foot straightedge and that the cross slope does not deviate more than 3/8 inch in 10 feet. Correct all irregularities exceeding these limits.

32119.03.02 Approaches and Tapers. Mill approaches and tapers as required by, and to the satisfaction of, the COR. The COR will determine the length, width, and depth of cut on approaches and tapers. Match the approaches and tapers to the finished cut on the mainline, and transition them to the existing surface within 1/8 inch.

End of Section- 32119

2 Division 32 – Exterior Improvements

SECTION 32120- CRUSHED STONE

01 - SCOPE

The work covered by this section of the specifications consists of furnishing all plant, labor, equipment, and materials and in performing all operations in connection with the replacement of crushed stone.

02 - FINE AND COARSE AGGREGATES

a. General: All aggregates shall meet the following requirements unless otherwise noted.

1. Fine Aggregate: Fine aggregate shall include natural sand, crushed sand and conglomerate sand.

Natural sand shall consist of fine granular material resulting from the gradual deterioration of rock.

Crushed sand shall consist of fine granular material resulting from crushing of stone, gravel or slag.

Conglomerate sand shall consist primarily of natural materials which have been processed to the desired sizes without crushing. However, conglomerate sand may include some material which has been produced by crushing larger pieces of the natural materials. Fine aggregate (sands) shall meet the applicable requirements for Portland Cement Concrete covered under Section 804, Kentucky

Transportation Cabinet Department of Highways Standard Specifications for Road and Bridge

Construction, Latest Edition.

Gradation shall conform to the following table taken from the above specifications:

Sieve Size Percent Passing

3/8 inch 100

No. 4 90-100

No. 16 45-80

No. 50 5-25

No. 100 0-8

2. Coarse Aggregates: Coarse aggregates shall be crushed stone or slag, crushed or uncrushed gravel and lightweight aggregates when permitted and shall meet the applicable requirements for the intended use as covered in Section 805 of the above Kentucky Transportation Cabinet Department of Highways specifications. Crushed slag shall be air-cooled blast-furnace slag as defined in ASTM C 125-74, "The material resulting from solidification of molten blast-furnace slag under atmospheric conditions.

Subsequent cooling may be accelerated by application of water to the solidified surface." Coarse

3 Division 32 – Exterior Improvements aggregate gradations when indicated by number size in these Specifications or on the drawings shall conform to Table I listed in Section 805 of the Kentucky Transportation Cabinet Department of Highways

Specifications.

b. Pipe Bedding: For bedding aggregates, refer to detail sheets on the contract drawings.

32120-01

c. Roads and Parking Areas or Their Bases: Dense Graded Aggregate (DGA) shall be used for streets, driving lanes and parking areas as illustrated on the contract drawings.

Section 32120- Crushed Stone Cont.

d. Walkways or Their Bases: Coarse aggregate for walkways or walkway bases under paving shall be

No. 68 or No. 78.

e. Temporary Walkway and Roadway Surfacing Over Trenches: Dense Graded Aggregate (DGA) shall be used for temporary walkway and roadway surfacing over trenches for pipelines and conduits.

f. Permanent Traffic Bound Surfacing Over Trenches: Dense Graded Aggregate (DGA) shall be used for permanent traffic bound surfacing over trenches for pipelines and conduits when paving is not required.

g. Permanent Traffic Bound Roadway Surface Maintenance: No. 610 traffic bound aggregate shall be used on streets and roads requiring overall surface maintenance unless otherwise specified or noted on

Drawings.

End of Section- 32120

4 Division 32 – Exterior Improvements

SECTION 32121- ASPHALT (BITUMINOUS) PAVING

1. WORK INCLUDED: This section includes all bituminous paving and base courses, from subgrade to finished surface, as shown on the drawings and specified herein.

2. WORK NOT INCLUDED: Rough grading of subgrade is specified under Section 31200.

3. GENERAL REQUIREMENTS

A. Bidders shall examine the site and become familiar with all conditions that might affect the work to be performed under this section.

B. The contractor shall lay out his own work and establish the lines and grades for same and shall furnish all engineering services and materials. Such elevations as established by the

Contractor shall be subject to checking and approval by the COR.

C. The paved areas shown on the drawings shall have bituminous concrete surfaces of medium fine, hot mixed, hot laid asphalt on dense graded aggregate base. Proof roll prepared subbase surface to check for unstable areas. Correct unstable or deficient areas before installing granular base to the satisfaction of the COR.

(1) All materials, methods of preparation and construction shall conform to the latest

Kentucky Department of Highways Standard Specifications hereinafter detailed.

(2) Paving construction shall be as detailed on the contract drawings.

(3) Patching of existing asphalt streets, if any, shall be in accordance with the Fort Knox

Standard requirements.

4. QUALITY ASSURANCE

A. At the Government’s discretion, the Contractor may be required to conduct a core sample(s) the installed asphalt to be tested at an independent laboratory.

B. Testing will be conducted at an independent laboratory at the Contractor’s expanse. Any retesting of rejected materials fir installed Work will be done at Contractor’s expense.

C. Three copies of the test reports will be submitted to MICC and forwarded to the PM for review.

5. MATERIALS

A. Aggregate for dense graded aggregate base shall be crushed limestone meeting the requirements of the Kentucky Department of Highways Specifications and shall be graded with or without blending, so as to produce a final mixture, in place, meeting the following gradation requirements.

Section 32121- Asphalt Paving Cont.

5 Division 32 – Exterior Improvements

B. Limestone dust, or other mineral filler approved by the COR and having plastic index of not more than 6.0 may be blended at the plant with the aggregate to compensate for any deficiency of the material passing the No. 200 sieve.

Sieve Size Square Opening Percent Passing

1" 100%

3/4" 70-100

3/8" 50-80

No. 4 35-65

No. 10 25-50

No. 40 15-30

No. 200 5-15

(1) The percent passing the No. 200 square sieve shall be less than two-thirds (2/3) of the percent passing the No. 40 sieve.

B. Water used shall be clean, clear and free from oils, acids, alkalies or organic materials.

C. Bituminous course (both surface and base) shall be Class 1, hot mixed, hot laid asphalt, medium texture in accordance with the Kentucky Department of Highways Specifications, Section 400. Weight of bituminous shall be 225 pounds per cubic foot. Thickness of bituminous course after compaction shall be as shown on the Contract Drawings.

6. CONSTRUCTION

A. The areas to be paved shall be shaped to line and grade, free from all loose rock, foreign material and shall be dry. All depressions shall be filled and the area compacted with a ten-ton roller. Approval of the COR must be obtained prior to the start of paving. Grading shall be done according to grades shown on the contract drawings. It shall be the responsibility of the

Contractor to grade in such a manner that no standing water will occur. Any inconsistencies shall be brought to the attention of the COR. All soft spots in subgrade shall be removed, replaced with suitable material, and be fully compacted, by the Contractor.

B. The dense graded aggregate shall be plant mixed and shall conform to the requirement herein set forth. The soils engineer shall certify that the granular base course has been placed and compacted in accordance with the Specifications. At least one field density test shall be made for every 2000 square feet of paved area. Copies of all field and laboratory tests results shall be forwarded to the COR.

C. Construction of paving shall not be started until all curbs, structures and sidewalk that is abutting the paving has been completed.

D. The graded aggregate and the water shall be delivered to the mixer simultaneously in such proportions as to give a final mixture containing optimum moisture as predetermined by Section

32121- Asphalt Paving Cont.

6 Division 32 – Exterior Improvements

A.A.S.H.O. Method T-99, and the quantity of admixture required. The mixer shall be twin pugmill type or approved equivalent. Materials thus combined shall be mixed to produce a homogeneous mixture meeting gradation and proportioning requirements.

E. The plant mixed material shall be transported in such a manner as to deliver the mix to the project without loss or segregation.

F. The mixture shall be placed, spread to a stringline, and shaped without segregation by the use of power equipment operated so as to produce the desired compacted depth to the line and grade. Any unevenness at the edge of paving is unacceptable.

G. The plant mixed, spread, and shaped material shall be compacted to produce a density throughout the base courses equal to or greater than 90% of solid volume.

H. Pneumatic tampers shall be used for compacting the base in areas inaccessible to power equipment. The tamper shall weigh not less than 50 pounds and shall have an area of tamping surface of not more than 100 square inches.

I. Bituminous base course shall be constructed over the prepared dense graded aggregate base in strict accordance with the standard specification referred to herein.

J. In the construction of the dense graded aggregate course and bituminous surface course, extreme care shall be exercised to avoid damage of any kind to other work. Any work so damaged shall be replaced as directed by the COR at no expense to the Government. Traffic over the entire area of the bituminous paving construction shall be regulated at all times as required to preclude damage to paving.

K. Saw cut and patch all damaged areas. Joints between new and existing paving shall be neat, straight and thoroughly sealed. Saw cut existing paving where it is joined by new work.

7. CLEANING: Maintain site in neat condition during paving operations. Avoid accumulations of stored or excess materials.

End of Section- 32121

7 Division 32 – Exterior Improvements

SECTION 32131- CONCRETE PAVING

1. WORK INCLUDED: This section includes the furnishing, forming, placing, curing and finishing of all concrete work, such as concrete walks, paving, curbs, sign, etc., as shown on the contract drawings and specified herein.

2. RELATED WORK: Work related to this section, but specified in other sections, is as follows:

(1) Preparation of Rough Subgrade - Section 31200

(2) Bituminous Concrete Paving - Section 32121

3. MATERIALS

A. All concrete shall have a minimum 28 day compressive strength of 3500 psi, and be air-entrained 5 to 7%.

B. Reinforce all concrete as detailed in the contract drawings or standard details.

Reinforcing steel shall have raised deformations with a yield strength of 40,000 PSI.

C. Maximum slump shall be three inches (3").

D. Expansion joint material shall be 1/2" thick and formed of expanded polyethylene which is compatible with sealant specified. Material impregnated with oil, bitumen or similar material shall not be used.

4. CONCRETE WALKS AND PAVING

A. On compacted earth subgrade, place a minimum 4" of compacted crushed stone fill, prior to concrete placement.

B. Forms shall be of wood or steel, straight, of sufficient strength to resist springing during depositing and consolidating concrete, and of a height equal to the full depth of the finished paving. Wood forms shall be surfaced plank, 2" nominal thickness. Steel forms shall be of approved section with a flat top surface. Forms shall be set with the upper edge true to line and grade and shall be held rigidly in place, by stakes placed at internals not to exceed 4 feet.

Forms shall be coated with form oil prior to concrete placement. Wood forms may, instead, be thoroughly wetted with water before concrete is placed, except that with probable freezing temperature, oiling is mandatory. Side forms shall remain in place for at least 12 hours after finishing has been completed.

C. Work to spot elevations given on the contract drawings or as required for proper drainage. Connection to other work shall be in same plane and made with a straight expansion joint. If needed to achieve a good joint, saw cut existing where new and existing meet.

8 Division 32 – Exterior Improvements

Section 32131- Concrete Paving Cont.

D. Concrete shall be placed in the forms in one layer of such thickness that when compacted and finished the paving will be a minimum of 4" thick. After the concrete has been placed in the forms, a strike-off guided by the side forms shall be used to bring the surface to the proper section to be compacted. The concrete shall be tamped and consolidated with a suitable wood or metal tamping bar, and the surface shall be finished to grade with a wood float. The final surface finish shall be steel troweled and then brushed (perpendicular to traffic) with a soft-bristled broom. Scoring and tooling of concrete, as specified below, shall follow the brooming operation. The finished surface shall not vary more than 3/16" from the testing edges of a 10-foot straight edge. Irregularities exceeding the above shall be satisfactorily corrected.

The surface shall be divided into rectangular areas by means of contraction joints. The contraction joints shall be formed in the fresh concrete by cutting a groove in the top portion of the slab to a depth of at least one-fourth of the slab thickness with a jointer. The completed surface shall be uniform in color and free of surface blemishes and tool marks.

E. Install transverse expansion joints where shown on the contract drawings or standard details and against all walls or previous pours, and a maximum of 30' on center. Joints filler shall be placed with top edge 1" below the surface. Immediately after finishing operations are completed, joint edges shall be rounded with an edging tool, and concrete over the joint filler shall be removed. Expansion joints shall be framed about existing structures. The filler shall be installed in such a manner as to form a complete, uniform separation between the structure and pavement. At the end of the curing period, the expansion joint shall be carefully cleaned and sealed with an approved sealant.

5. CONCRETE CURB: Concrete curb shall be as detailed on the contract drawings.

Provide 1/2" thick premolded joint filler where shown on the contract drawings, at connections with existing curbs or at connection to previous pours. Saw-cut existing curbs where joined by new curbs. Expansion joint shall be at 50 foot maximum intervals. At joints, provide smooth dowels designed and installed to allow movement. Round corners to 1/4" radius. Fill any honeycomb areas with 1:2 mortar and give exposed surfaces a smooth wood float finish.

6. CURING: Immediately after the finishing operation, cover concrete with polyethylene coated burlap or polyethylene sheeting. Polyethylene sheeting and poly film bonded to burlap shall be not less than 4 mils thick. The curing medium shall be not less than 18" wider than the concrete surface to be cured, and shall be securely weighted down by heavy wood planks, or by placing a bank of moist earth along edges and laps in the sheets. Sheets shall be satisfactorily repaired or replaced if torn or otherwise damaged during curing. The curing medium shall remain on the concrete surface to be cured for not less than 7 days.

7. PROTECTION: The completed concrete shall be protected from damage until accepted. The contractor shall repair damaged concrete and clean concrete discolored during construction. Concrete that is damaged shall be removed and reconstructed for the entire length between joints, not by patching and/or refinishing the damaged portion. Existing concrete that is

9 Division 32 – Exterior Improvements damaged by any construction operation shall be restored to its original conditions.

End of Section- 32131

10 Division 32 – Exterior Improvements

SECTION 32174- PAVEMENT MARKINGS

Permanent Pavement Striping

MATERIALS

Paint - The paint shall be ready-mixed, one- component, 100% waterborne acrylic striping paint suitable for application on such traffic- bearing surfaces as Portland cement concrete, bituminous cement concrete, asphalt, tar, and previously painted areas of these surfaces. Select durable waterborne acrylic paint that conforms to the composition requirements below.

PAINT COMPOSITION

Property and Test Method Yellow White Daytime Color (CIELAB)

Spectrophotometer using illuminant D65 at 45º illumination and 0º viewing with a 2º observer

L* 81.76 a* 19.79 b* 89.89

Maximum allowable variation 4.0∆E*

L* 93.51 a* -1.01 b* 0.70

Maximum allowable variation 4.0∆E* Nighttime Color (CIELAB)

Spectrophotometer using illuminant A at 45º illumination and 0º viewing with a 2º observer

L* 86.90 a* 24.80 b* 95.45

Maximum allowable variation 4.0∆E*

L* 93.45 a* -0.79 b* 0.43

Maximum allowable variation 4.0∆E* Heavy Metals Content Comply with 40 CFR 261 Comply with 40 CFR 261

Titanium Dioxide

ASTM D 4764

NA 10% by weight of pigment min.

VOC

ASTM D 2369 and D 4017

1.25 lb/gal max. 1.25 lb/gal max.

Contrast Ratio

(at 15 mils wft)

0.97 0.99

Glass Beads - Use for application to reflective pavement markings. Conform to AASHTO M 247, moisture resistant specifications with the following additional requirements for gradation and percentage of rounds.

Gradation: Sieve Size Percent Passing

No. 20 98-100

No. 30 70-90

No. 40 —

11 Division 32 – Exterior Improvements

No. 50 0-20

No. 80 0-5

Rounds: 70% minimum for + 50 beads

Section 32174- Pavement Markings Cont.

APPLICATION EQUIPMENT

Road Lines. Use a self-propelled striper capable of heating the paint to provide uniform flow.

Ensure that the striper has a guide boom or optical pointer to attain smooth and straight lines.

Ensure that the equipment maintains proper application pressures for paint and beads at all times.

Provide equipment capable of applying a single line or parallel lines of the specified width and in any combination of a skip line and a solid line in one pass.

Provide equipment with a paint cutoff device to provide clean, square marking ends of the paint lines.

Equip the paint pots or tanks with an agitator that will keep the paint thoroughly mixed.

Provide equipment with bead dispensers, minimum of one for each paint spray gun, placed such that the beads are applied to the paint almost instantly as the paint is being placed on the roadway surface.

Design and align the bead dispensers so that beads are applied under air pressure uniformly to the entire surface of the paint lines. Equip the bead dispensers with cutoff controls synchronized with the cutoff controls for the paint spray guns.

Intersection Markings, Crosswalks & Symbols. Intersection markings, crosswalks, parking stall lines, symbols & special markings shall be placed with any industry standard equipment.

12 Division 32 – Exterior Improvements

CONSTRUCTION. Provide all markings indicated on Attachment 2 – Bid Schedule.

Pavement Surface Preparation. Clean grease, oil, mud, dust, dirt, grass, loose gravel, or other deleterious material from the surface where pavement markings are to be applied. The Contractor shall provide a separate sweeping unit powerful enough to remove normal highway dirt and debris. This unit shall not be a part of the striper. All pavement surfaces shall be swept prior to striping and the cleaning operation shall be far enough in advance of the striping operation to prevent any dust from the cleaning operation from mixing with the paint. The sweeper must maintain contact with the roadway.

Paint Application. Roadways and parking lots shall be marked with lines and special markings as indicated in the Attachment 2 – Bid Schedule. The four-inch line shall not be less than four inches nor more than five inches in width. The twelve-inch line shall not be less than twelve inches nor more than thirteen inches in width. The centerline of all newly applied lines shall be within one inch of the centerline of the existing stripe.

Section 32174- Pavement Markings Cont.

All lines shall have distinct, clean edges with proper bead distribution across the entire width and length of the line.

Passing zones and lane lines shall be installed as a 15’ segment of paint with a 25’ gap. The length of the

15’ segment shall not be less than 15’ nor longer than 15 feet 6 inches. The stripegap cycle shall not be less than 39 feet 6 inches and no longer than 40 feet 6 inches.

Apply paint, in a single pass, following application rates below:

Material Paint Application Rate Glass Bead

Application

Rate

4 inch waterborne paint Min. of 16.5 gallons/mile Min. of 6 pounds/gallon

6 in waterborne paint Min. of 24.8 gallons/mile Min. of 6 pounds/gallon

6 inch durable waterborne paint

Min. of 36 gallons/mile Min. of 6 pounds/gallon

The Contractor shall be responsible for protecting the painted line from traffic until dry in order to eliminate tracking.

If the Government determines that the quality of the striping applied by the Contractor is unsatisfactory with regard to retroreflectivity, bead distribution, paint thickness, overspray, accuracy of retracing, line

13 Division 32 – Exterior Improvements width, consistency, tracking, etc., the Government may stop the striping operation immediately until the

Contractor can demonstrate that the problem has been corrected. If it is determined by the

Government that the striping is not applied at the specified application rate, restriping will be required at no additional cost to the Government. Striping errors shall be handled as below.

Retroreflectivity Requirements. The minimum retroreflectivity requirements are as follows:

White: 300 mcd/lux/square meter

Yellow: 225 mcd/lux/square meter

Restriping will be required for striping that fails to meet the minimum retroreflectivity requirements.

Marking Removal. Remove all markings made in error to include tracking and markings that do not conform to given specifications. Do not paint with asphalt binder or other material to obliterate the markings. Remove pavement striping, temporary or permanent, from asphalt or concrete pavement using ultra-high pressure water. Marking removal totaling 1,000 linear feet or less may be removed by an abrasive method to the satisfaction of the Engineer. Vacuum all marking material and removal debris concurrently with the marking removal operation.

Do not damage the pavement in any way and protect all joint seals. If damage is observed, stop the removal process until the operation can provide an acceptable marking removal. Repair any damage to the pavement as a result of the marking removal. Removal of marking will not be measured for payment.

Upon notification of a striping error by the Government, the Contractor shall be required to begin the process of correcting the striping error within five working days and shall work continuously to complete the corrective work prior to striping any other section of roadway included in this contract. The

Contractor shall be responsible for all necessary cleanup of any paint or other material that is spilled onto the pavement or elsewhere as a result of his operations.

PAINT ON VEHICLES. The Contractor shall be responsible for addressing disputes with the public regarding paint on vehicles that occur as a result of his operations. All complaints from the public shall be addressed in a timely manner and the Contractor must demonstrate a “good faith” attempt to resolve disputes to the satisfaction of the citizen. However, the Contractor shall have the right to

14 Division 32 – Exterior Improvements dispute fault and refuse settlement in cases where the Contractor feels that paint on the vehicle was a result of negligence on the part of the citizen. Unresolved disputes involving paint on vehicles shall be handled through the legal system. The Government shall not be held responsible for paint on vehicles under any circumstances.

SCHEDULING

The Contractor shall coordinate the daily striping schedule, one week in advance, with the assigned

Government Inspector.

All Parking Lot striping shall be done on weekends. Dates shall be coordinated and approved by

Government Inspector and building occupant 1 week prior to work.

TRAFFIC CONTROL

Traffic shall be maintained in accordance with the MUTCD, and the Standard

Specifications for Road and Bridge Construction.

Any temporary traffic control items, devices, materials, and incidentals shall remain the property of the

Contractor, unless otherwise addressed, when no longer needed.

The Contractor's vehicles shall always move with and not across or against the flow of traffic. These vehicles will not be permitted to make U-turns at any location. The striper will not be permitted to stop and back down the road or ramps to stripe turn lanes. Vehicles shall enter or leave work areas in a manner that will not be hazardous to, or interfere with, normal traffic flow. Vehicles shall not park or stop except within designated work areas. Personal vehicles will not be permitted to park within the right-of-way.

The paint supply truck shall not be allowed to operate as one of the traffic control vehicles. If one of the required traffic control vehicles experiences mechanical problems or for some other reason is not available to remain in position, the striping operation shall cease until all required vehicles are in place.

Striping may not be permitted on any roadway during the peak times of the day, holiday periods, or special events as determined by the Engineer.

15 Division 32 – Exterior Improvements

On two-lane, two-way roads, the Contractor shall make provisions to the satisfaction of the Government to periodically allow traffic to safely pass the train of vehicles in the striping operation.

End of Section- 32174

16 Division 32 – Exterior Improvements

SECTION 32175 - SIGNAL SYSTEMS

32175.01 DESCRIPTION. Furnish, install, and connect traffic control devices, with accessories according to the Scope of Work.

32175.02 MATERIALS. This section defines minimum acceptable design and operational standards for traffic control devices. Materials shall be approved before being installed. Once approval is given for a product, substitutions will only be permitted with written permission from the Engineer

32175.02.01 Loop Wire. Provide loop wire that is 14 AWG, stranded, copper and conform s to IMSA spec 51-7.

32175.02.02 Loop Lead-In Cable. Provide loop lead-in cable that is 14 AWG, stranded, copper, paired conductors, electrically shielded and conforms to IMSA spec 19-2.

32175.02.03 TRAFFIC LOOP ENCAPSULANT. Provide a non-shrink, non-stringing, moisture cure, one-part, polyurethane traffic loop encapsulate suitable for use in both asphalt and concrete pavements. Ensure it provides a void-free encapsulation for detector loop wires and adequate compressive yield strength and flexibility to withstand heavy vehicular traffic and normal pavement movement. The COR may reject the product if any physical property renders the material unsuitable.

Ensure that the cured encapsulate has the following properties:

TRAFFIC LOOP ENCAPSULANT REQUIREMENTS

AND PRICE ADJUSTMENT SCHEDULE

Test Specification 100% 90% Pay 80% Pay 70% Pay 50%

Hardness

(ASTM D 2240)

35-65

30-70

25-29

71-75 20-24

76-80 15-19

81-85 ≤ 14

≥ 86

Tensile Strength, (ASTM D 412)

150 min.

min.

140-144

135-139

130-134

≤ 129

Elongation, % (2)

(ASTM D 412)

125 min.

min.

115-119

110-114

105-109

≤ 104

Density, lb/gal

(ASTM D 1875)

9.00-11.00

8.50-

8.30-8.49

11.51- 8.20-8.29

11.61- 8.10-8.19

11.71- ≤ 8.09

≥ 11.81

Tack-free Time, (ASTM C 679)

24 max.

24.5

24.6-25.0

25.1-25.5

25.6-26.0

≥ 26.1

Complete Dry hours (KM 64-447)

30 max.

30.5

30.6-31.0

31.1-31.5

31.6-32.0

≥ 32.1

Chemical

(KM 64-446)

Motor Oil

Deicing Chemicals

Gasoline

Hydraulic Brake

No Effect

Slight

Section 32175- Signal System Cont.

17 Division 32 – Exterior Improvements

32175.03 CONSTRUCTION. Perform the work according to:

1) the Contract,

2) Kentucky Department of Highways, Standard Drawings,

3) National Fire Protection Association (NFPA) 70: National Electrical Code,

4) Institute of Electrical and Electronic Engineers (IEEE), National Electrical

Safety Code,

5) AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals, 2009 edition,

6) AASHTO Roadside Design Guide,

7) Manual on Uniform Traffic Control Devices for Streets and Highways, current

Edition, and

8) the standards of the utility company serving the installation.

32175.03.01 Loop Installation. Twist unshielded loop wire (IMSA 51-7) with three to five turns per foot before placing in saw slots, conduits, junction boxes, or cabinets. Extend loop wires splice-free to poles, pedestals, or junction boxes. Splice loop wires (IMSA 51-7) to loop lead-in cable (IMSA 19-2) in poles, pedestals, or junction boxes as shown on the Plans. Extend loop lead-in cable splice-free from the pole, pedestal, or junction box to the controller. Provide an extra 1 foot of loop wire and loop lead-in past the installed conduit in poles, pedestals, and junction boxes. Make splices accessible from the handholes of poles. On projects involving new asphalt pavement, install loops in the base course of asphalt pavement before the final surface in constructed. Coordinate the installation of the loops with the COR.

32175.03.02 Acceptance and Inspection Requirements. Energize traffic control device as soon as it is fully functional and ready for inspection. Ensure that the traffic control device remains operational until the Post Maintenance Contractor has provided written acceptance of the work. After the work has been completed, conduct an operational test demonstrating that the system operates in accordance with the Plans in the presence of the COR. Post Maintenance Contractor will conduct an inspection of the installation prior to calling the job complete. The inspection will include, but not limited to:

1. Induction loop conductors shall test free of shorts and unauthorized grounds and shall have an insulating resistance of at least one hundred megaohms when tested with a 500 volt direct current potential in a reasonably dry atmosphere between conductors and ground.

End of Section 32175

18 Division 32 – Exterior Improvements

SECTION 32222- SUBGRADE PREPARATION for ROADS, DRIVES, and PARKING

AREAS

A. Related Work:

1. Division 2, Section “Clearing, Grading, and Excavation

B. Summary:

1. After earthwork has been substantially completed and related work has been completed, the subgrade shall be brought to the lines, grades, and typical cross-section indicated, and finished in accordance to directives.

C. Execution:

1. All soft and yielding material, boulders, loose stones or any other unsuitable material in the subgrade which will not compact readily will be removed and replaced with suitable material.

2. The subgrade for roads and drives shall be rolled as required by ESD the entire length of the project with a 10-ton or heavier three-wheel power-drive roller. During the rolling of the subgrade, the density will be maintained at a density of 95% Standard

Proctor Maximum Density in accordance with ASTM C-698.

End of Section- 32222

19 Division 32 – Exterior Improvements

SECTION 32513- PAVEMENT and AGGREGATE BASE COURSE

A. Quality Assurance:

1. Thickness of asphalt shall be as directed. Thickness given is on a compacted basis.

2. All materials will comply with Kentucky Department of Highways Standard

Specifications for Road and Bridge Construction, and the American Association of

State Highway Transportation Officials (AASHTO).

B. Aggregate:

1. Aggregate base course will consist of 8” crushed stone/crushed gravel compacted

100%, or flowable fill, and shall conform to the requirements of latest AASHTO specifications and Kentucky Department of Highways Standard Specifications for

Road and Bridge Construction.

C. Pavement:

1. Road, Bridge, and Site Construction- All asphaltic pavement, site concrete, bridge and related work will comply with Kentucky Department of Highways Standard

Specifications for Road and Bridge Construction. Details of construction will be provided for review in the individual project scope of work. Specifications are located at the following website:

http://transportation.ky.gov/Construction/Pages/Kentucky-Standard-

Specifications.aspx

2. Tack Coat- Tack coat will consist of 0.20 to 0.50 gallons per square yards of medium curing asphalt; grade CRS-1, meeting the latest AASHTO specifications for that grade.

3. Prime Coat- Prime coat will consist of 0.20 to 0.50 gallons per square yards of medium curing asphalt. Prime coat will be accordance with KYDOT and latest AASHTO specifications.

4. Asphaltic Concrete Surface Coarse- Asphaltic concrete surface course will consist of plant mix asphalt layered to a compacted thickness. Mix will be in accordance with

KYDOT Standard specifications for Roads and Structures for Class 1-Bituminous

Surface Course Type I-2. Composition of mixture that would include recycled asphalt pavement will be as per KYDOT Specifications.

5. The mixture will be placed by means of a mechanical self-powered paver, capable of spreading the mixture true to the proper line, grade, and crown.

6. Immediately after the placing of a layer, The Contractor will begin machining and compacting the layer. The final layer of the base material will be shaped to conform to the lines, grade, and a typical section established by ESD. Provide crown or slope in base course and/or placement of asphalt to provide positive drainage to gutters or edge of pavement if gutters are not in the work.

Section 32513- Pavement and Aggregate Base Course Cont.

http://transportation.ky.gov/Construction/Pages/Kentucky-Standard-Specificat http://transportation.ky.gov/Construction/Pages/Kentucky-Standard-Specificat

20 Division 32 – Exterior Improvements

D. Pavement Marking:

1. Apply pavement marking paint with mechanical equipment to produce pavement markings of dimensions indicated with uniform, straight edges. Apply manufacturer’s recommended rates to provide a minimum wet film thickness of 15 mils.

2. Securely attach wheel stops into pavement with not less than 2 galvanized steel dowels embedded in precast concrete at 1/3 points. Firmly bond each wheel stop to pavement.

3.

End of Section- 32513

21 Division 32 – Exterior Improvements

SECTION 32920- TURF AND GRASSES

1. WORK INCLUDED: This section includes all labor and materials required for the soil improvements, seeding, and lawn maintenance, as specified herein, including the following:

(1) Include soil improvement operations as specified herein in all areas to be sodded and seeded.

(2) Sod a 2 foot wide strip adjacent to all hard surfaces and on all slopes steeper than 3:1. Seed shall be applied on all other areas.

2. EXAMINING THE SITE: Examine all areas to be sodded or seeded. Report unsatisfactory conditions to the Engineer. Proceeding with seeding shall indicate acceptance of conditions under which the work will be done.

3. MATERIALS:

3.1 Biodegradable Netting and Seeding:

a. Install netting and seed, seed mix as described in the Section, directly adjacent to and out from building a distance of 8’-0”.

3.2 Hydroseeding and Stabilizer:

a. Install Hydroseeding/Stabilizer slurry in open areas and up to within 8’0” of building.

b. Slurry to meet ASTM 6523-00 requirements.

c. Installation window as recommended by Manufacturer.

3.3 Basis-of-Design: the following product is the basis of design. Available manufacturers subject to compliance with requirements.

a. Biodegradable Netting: Curlex as manufactured by A.M. Leonard Supply Co., (800) 543-

8955.

1. Biodegrades within 90-120 days.

b. Hydroseeding/Stabilizer: BioCover as manufactured by Profile Products, (800) 508-8681.

1. Seed component mix as described in this Section, in slurry mix.

3.4 Fertilizer shall be a complete commercial fertilizer l0-l0-l0 formula or as specified by the Testing

Laboratory. Fertilizer shall be delivered to the site in unopened containers bearing a guaranteed analysis.

3.5 Water used in this work shall be suitable for irrigation and free from ingredients harmful to plant life.

3.6 Grass seed at turf netting shall be mixed and guaranteed by the dealer to be as follows:

Common Proportion Purity Germination by Weight

Perennial Rye 10% 92 85%

Creeping Red Fescue 30% 95 85%

Falcon Fescue 60% 95 85%

22 Division 32 – Exterior Improvements

Seed to be applied at 4 lbs. per 1000 S.F.

Section 32920- Turf and Grasses Cont.

3.7 Sod shall be at least 98% Falcon Fescue; strongly rooted, and free of pernicious weeds. It shall be mowed to a height not to exceed two inches before lifting and shall be of uniform thickness with not over 1-1/4 inches or less than one inch of soil. The Engineer shall be notified of the location of the place from which the sod is taken so that he may inspect the sod. Do not remove sod until approval is received.

4. SOIL IMPROVEMENT:

The entire area to be seeded shall have commercial fertilizer applied at the rate of twenty-five

(25) pounds per l000 square feet; and agricultural limestone applied at the rate of one hundred

(100) pounds per l000 square feet. These materials shall be thoroughly incorporated into the soil by use of a mechanical tiller or other approved method. During the preparation of the soil as above described, all sticks, stones over two inches in any dimension, and other debris shall be removed. Tilling shall continue until the soil is thoroughly pulverized, and areas shall then be hand raked until it is smooth, loose, and free from hollows or depressions, conforming to the grade satisfactory to the Board.

When this operation has been completed, no heavy objects except lawn rollers shall be taken over or upon these areas at any time unless they are adequately protected.

5. SEEDING: Where noted and upon completion of the soil bed preparation, seeding shall be applied at the rate of 4 pounds per l000 square feet of surface area, and shall be sown in accordance with approved procedure of cultivation, sowing, etc. After seeding cover the seeded area with straw.

6. SODDING:

A. Where required and upon completion of the soil bed preparation, sod shall be placed by hand with close joints and no overlapping. All spaces between sections of sod, openings at angles, and similar gaps shall be plugged with sod. After laying, the sod shall be sprinkled thoroughly and then tamped with approved sod tamper or rolled with a lawn roller weighing not more than 300 pounds to incorporate the sod with the sod bed and insure tight joints between the sections of strips. Any voids, openings, or inter-splices still left after rolling or tamping shall be filled with screened soil. Upon completion of the work, 23 Division 32 – Exterior Improvements the surface of the sodded areas shall coincide with the finished grade, and shall meet the established grade around the buildings.

B. Sod on slopes steeper than three to one shall be held in place with steel pins (a minimum of six inches long) driven through the sod until flush with the top of the sod.

C. Sodding operation shall be performed under favorable weather conditions from March 1 to

May 15 or from September 1 to October 15, unless other seasons are approved by the

Engineer.

7. MAINTENANCE:

A. Lawns shall be adequately protected against trespass and damage of any kind. Damaged or washed out areas shall be properly renewed.

Section 32920- Turf and Grasses Cont.

B. The operations of maintenance shall begin immediately after each portion of lawn is seeded and shall continue for thirty (30) days thereafter and as long as is necessary to establish a uniform stand of grass and until acceptance.

C. All lawns shall be kept in a healthy growing condition by watering, weeding, mowing, trimming, and by any other necessary operation of maintenance. At the conclusion of the maintenance period, all lawns shall have a close stand of the grass, and shall be free of weeds. If not, the maintenance period shall be continued until these requirements are met.

D. Maintenance of the lawn areas will be assumed by the property owners after all work under this Specification has been completed and accepted.

E. For the purpose of establishing an acceptable standard, scattered bare spots, none of which is larger than one square foot will be allowed up to a maximum of 3% of any lawn area.

8. SEDIMENT CONTROL: The Contractor shall exercise every reasonable precaution at all times to prevent water pollution by the deposition of sediment in streams, lakes and reservoirs.

Contractor shall conduct and schedule their operations so as to avoid or minimize the muddying or siltation of areas adjacent to the construction site including streets, storm sewers, vacant lots, etc. The Contractor shall comply with the applicable provisions of KRS Chapters 220 and 224 of the State Water Pollution Control Laws and other applicable statues relating to the prevention or abatement of water pollution. Where specified or required by applicable laws, silt fence shall be installed, inspected, maintained and removed in accordance with industry standards. Silt fence temporarily removed to facilitate construction activities shall be replaced immediately following completion of such activity.

End of Section- 32920