Long County Middle & Walker Elementary Phase I Grading

Transcription

1 SECTION BITUMINOUS CONCRETE PAVEMENT (SUPERPAVE) PART 1 - GENERAL 1.01 RELATED DOCUMENTS A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division-1 Specification sections, apply to work of this Section DESCRIPTION OF WORK A. Extent of asphalt concrete paving work shown on drawings. B. Prepared graded aggregate sub-base is specified in this section. C. Saw-cutting of edges of existing pavement is specified in this section QUALITY ASSURANCE A. Qualifications of Asphalt Concrete Producer: Producer engaged in acceptable operation of production of hot-mix hotlaid asphalt concrete for min. of 5 years. B. Codes and Standards: Comply with Department of Transportation, State of Georgia "Standard Specifications, Construction of Roads and Bridges", 2001 edition, hereinafter noted as "Standard Specifications" except for modifications or additions as specified herein. 1. Contractor keep current copy of Standard Specifications on file at site. 2. Where terms in Standard Specifications used, intent understood as follows (except for work on State Right-of- Way, for which the following terms shall have both the original and the modified meaning as follows): a. "State" = Owner. b. "Department" = Architect and/or Owner's representative. c. "Engineer" = Owner's representative. d. "Proposal Form" = Proposal, General or Special Conditions or Technical Specifications. 3. Modify Standard Specifications by deletion references to method of measurement and basis for payment in Section Comply with local governing regulations if more stringent than herein specified. C. Testing: By independent laboratory in accordance with ASTM E 329, approved and directed by Architect. 1. Payment: In accordance with Section Quality Control Services. 2. Areas found not in compliance corrected and retested at no cost to Owner. D. Training: Provide on site, at all times, at least one person who is thoroughly trained and experienced in skills required, who shall be completely familiar with design and application of work described, and who shall be present during progress of work herein specified and who shall direct work performed under this section. E. Allowable Tolerances: In-place pavement not to exceed following: 1. Thickness of Base Course: ½"+. 2. Thickness of Surface Course: ¼"+. 3. Surface Smoothness of Base Course: ¼" in 10'-0". 4. Surface Smoothness of Surface Course: 3/16" in 10'-0". Bituminous Concrete Pavement (Superpave)

2 1.04 SUBMITTALS A. Producer's Qualifications: Certification of asphalt concrete producer's qualifications. B. Manufacturer's Instructions: Standard application instructions for prime coats modified for specific project requirements. C. Submittal data to architect for review a min. of 45 days prior to beginning paving operation. D. Base Course 1. Origin of material and certification of material 2. Graduation of soil per testing requirements. One test is required per pit used 3. Soil Cement ratio design to be submitted prior to beginning stamped and signed by a Georgia Registered Engineer. E. Pavement Striping materials F. Job-Mix formula (Sampling and Testing): 1. Bituminous Plant Mix Surface Course: Applied in accordance with Standard Specifications. a. Roads: Type "12.5 mm Superpave". b. Parking Lots and their connecting drives: Type "9.5 mm Superpave". 2. Bituminous Pavement Mixture estimated at more than 300 tons, less than 1000 tons: Submit job-mix formula with pertinent laboratory and field test data to Architect for review and approval min. 45 days prior to beginning paving operation. 3. Sampling and Testing: Submit specified data, including Marshal test properties, for approval by Owner's representative. a. Laboratory to notify of satisfactoriness of proposed design mix prior to beginning of placement of pavement. b. Such data not required on mix estimated at 300 tons or less; see below. c. Contractor perform density tests of compacted base course, compacted bituminous binder and surfaces courses as directed, at no additional cost to Owner. 4. Bituminous Pavement Mixture estimated at 300 tons or less: Provide manufacturer's certificates of compliance for materials, job-mix formula and copies of tests of bituminous plant mixture furnished for project. a. Provide sampling and testing for job quality control as specified under Part 3 Article entitled "Testing" BONDS AND PERMITS A. Work Performed on Department of Transportation Right-of-Way: Where work indicated to be performed on Department of Transportation right-of-way the Owner will be responsible for: 1. Either placing money in an escrow account or obtain and pay for a bond in the amount required by the Department of Transportation. 2. Obtaining Department of Transportation Permit. B. Work Other Than in Department of Transportation Right-Of-Way: Where work performed in areas other than in Department of Transportation right-of-way the Contractor shall be responsible for all bonds and permits required by agencies having jurisdiction SITE CONDITIONS A. Manufacturer, transportation and application of materials to meet Industry Standards for job conditions at site. B. Provide subgrade for support of paving prepared and compacted as specified in Division-2 section "Earthwork". Bituminous Concrete Pavement (Superpave)

3 C. Do not begin paving work until all underground work of other subsurface system trades completed at designated elevations, including: 1. Adjacent curbs. 2. Curb and gutter. 3. Walks. 4. Valve boxes. 5. Manholes and inlet frames. D. Inspect job conditions preventing execution of work specified. 1. Verify that subgrades compacted as specified and to elevations and slopes indicated. 2. Do not proceed until unsatisfactory conditions corrected. E. Weather Limitations: 1. Apply prime and tack coats when ambient temperature above 50 o F. (10 o C.), and when temperature not below 40 o F. (1 o C.) for 12 hours prior to application. 2. Do not apply when base wet or contains excess of moisture. 3. Construct asphalt concrete surface course when atmospheric temperature above 40 o F. (4 o C.), and when base dry. 4. Place base course when min. air temperature above 30 o F. (-1 o C.) and rising. F. Grade Control: Establish and maintain required lines and elevations. PART 2 - PRODUCTS 2.01 MATERIALS A. General: Use only materials in accordance with requirements of Standard Specifications and as specifically referenced hereinafter. B. Base Course Construction 1. General a. Install type and thickness of base course as indicated on drawings. b. All base course materials shall meet or exceed requirements of the Georgia Department of Transportation. 2. Soil Base Material (Sand-Clay) a. This material shall be composed of natural or artificial mixtures of clay and soil binder or other aggregates. The mixture shall be free of injurious materials. b. Boulder larger than 2 shall be removed from the mixture. c. The fraction passing the N0. 40 Sieve shall meet the following: (1) Liquid Limit (LL) no more than 25. (2) Plastic Index (PI) of not more than 9. Bituminous Concrete Pavement (Superpave)

4 d. Graduation of soil shall meet the following: Requirements Percent by Weight Passing 2 inch sieve 100 Passing 1-1/2 inch sieve Passing 3/4 inch sieve Passing No. 10 sieve Material Passing No. 10 Sieve CLASS A CLASS B Passing No. 10 sieve Passing No. 60 sieve Passing No. 200 sieve Clay (8 minutes suspension on Elutriation test) Volume Change (% maximum) Maximum Density (#/CF) e. Testing: Method of testing shall be in accordance with the following: (1) Soil Graduation GDT4 (2) Volume Change GDT6 (3) Maximum Density GDT 7 or GDT67 (4) Liquid Limit AASHTO: T89 (5) Plastic Limit and Plastic Index AASHTO: T90 3. Soil Cement a. Soil Cement shall consist of selected soil, which meets the requirements of Georgia Department of Transportation for Roadway Materials Class I. (IA1, IA2, or IA3) b. Soil Cement design shall be developed and stamped by a Georgia Professional Engineer and submitted for approval prior to beginning. c. Fly Ash shall meet the requirements of AASHTO M 295 Class F or Class C d. Graduation of soil shall meet the following: Class I Roadway Material IA1 IA2 IA3 % Passing No. 60 Sieve % Passing No. 200 Sieve % Clay % Change Volume Maximum Dry Density* Maximum Dry Density in (lb/ft3) e. Testing: Method of testing shall be in accordance with the following: 1) Soil Graduation GDT: 4 2) Volume Change GDT: 6 3) Maximum Density GDT: 7 or GDT 67 Bituminous Concrete Pavement (Superpave)

5 4. Base Course Aggregate: a. Shall be obtained from a Georgia Department of Transportation approved pit. b. Course Aggregate shall be: Class A, Group I or II. c. Graduation Requirements: CLASS A Aggregate base Course Percent By Weight Sieve Size Group I Group II 2 Sieve /2 Sieve ¾ Sieve No. 10 Sieve * No. 60 Sieve No. 200 Sieve For Group I Aggregates having less than 37% passing the No. 10 sieve, a minimum of 9 % passing the N sieve is required d. Testing: Method of testing shall be in accordance with the following: 1) Soil Graduation GDT: 4 2) Liquid Limit AASHTO: T89 3) Plastic Limit and Plastic Index AASHTO: T90 e. Use of recycled base material or crushed concrete is prohibited. C. Bituminous Prime Coat: 1. Apply in accordance with Section 412 of Standard Specifications. 2. Prime Coat: Grade RC 30, MC 30, RC 70 or MC Application Rate: 0.20 to 0.30 gal./s.y. 4. Option: Emulsified asphalt if approved by Owner's representative. D. Bituminous Tack Coat: If prime coat not fresh, clean and free of traffic marks, apply tack coat immediately prior to application of surface course. 1. Apply in accordance with Section 413 of Standard Specification. 2. Tack Coat: Emulsified Asphalt Grade SS-1 3. Application Rate: 0.08 to 0.15 gal./s.y. 4. Option: Cutback Asphalt if approved by Owner's representative. E. Bituminous Hot Plant Mix Courses: 1. Surface and Binder Course: a. Asphaltic Concrete as listed below: 1) Composition: Asphaltic Concrete Coarse Aggregate Size 12.5mm Superpave 89 & Screenings 9.5 mm Superpave Level B 89 & Screenings 9.5 mm Superpave Level A 89 & Screening Asphalt Cement, Viscosity Grade MC-30 MC-30 MC-30 Bituminous Concrete Pavement (Superpave)

6 2) Approximate Job Mix Asphaltic Concrete: Sieve Size Percentage Passing Asphaltic Concrete 12.5mm Superpave 9.5 mm Superpave Level A 9.5 mm Superpave Level B 1 inch ¾ inch ½ inch ⅜ inch No No No No ) Additional Requirements: Design Parameter Design Criteria a. Percent of Maximum Specific Gravity (%G mm) at 96% the design number of gyrations, (N d) ( See Note 1) b. % G mm at the initial number of gyrations (Ni) Level A < 91.5% Level B < 90.5% c. Fines to Effective asphalt binder ratio (F/P be) 1) Asphaltic Concrete 9.5 mm Superpave (level A) )All Superpave mixtures exclude item d. Tensile Strength (GDT 66) 1) Ratio e. Retention of Coating 95% min. *Note 1 Maximum specific gravity (G mm) determined in accordance with AASHTO T209 **Note 2 A Tensile splitting ration of no less than 70% may be accepted so long as all individual test values exceed 100 psi (690kPa) Percent Voids in mineral aggregate (VMA) at N d Nominal Sieve size Minimum % VMA 1 in (25mm) 12 3/4 in (19mm) 13 1/2 in (12.5mm) 14 3/8 in (9.5 mm) 15 *VMA is to be determined based on effective specific gravity of the aggregate (G se). Percent Voids filled with asphalt (VFA) at N d Mix Design Range % VFA Minimum Maximum Level A Level B Level C Level D Bituminous Concrete Pavement (Superpave)

7 Superpave Gyratory Compaction Criteria Mix Design Number of Gyrations Level A 6 50 Level B 7 75 Level C Level D F. Recycled Asphalt Pavement: 1. Limit the percentage of recycled asphalt pavement allowed in recycled mixes so that the overall amount of alluvial gravel does not exceed 5% of the total mix. 2. Process recycled asphalt material so that 100 percent will pass the 2 in (50mm) sieve. G. Herbicide Treatment: 1. Commercial chemical for weed control, registered by Environmental Protection Agency. 2. Provide granular, liquid, or wettable powder form. 3. Manufacturers: Subject to compliance with requirements, provide products of one of following: a. Allied Chemical Corp. b. Achem Products, Inc. c. Ciba-Geigy Corp. d. Dow Chemical U.S.A. e. E.I. DuPont De Nemours & Co., Inc. f. FMC Corp. g. Thompson-Hayward Chemical Co. h. U.S. Borax and Chemical Corp. H. Pavement markings 1. Lane Marking Paint: Chlorinated rubber-alkyd type, a. AASHTO M 248 (FS TT-P-115), Type II. b. Manufactures 1) Glidden 2) Sherwin Williams 3) Dulux 2. Thermoplastic pavement markings: Shall be in accordance with Georgia Dot Specification section 653 a. Physical requirements: ASTM D476, Type II Rutile b. Color, ASTM D 4960 c. Color retention ASTM D 620 d. Water absorption: No more than 0.5% (ASTM D570) e. Glass Beads ASTM D1155 I. Plastic Pavement Markers (Reflective road markers) 1. Plastic pavement markers shall be a minimum of 4 x4 and shall be installed in accordance with the Manual on Uniform Traffic Control Devices 2. All devises shall be constructed to reflect light form headlights on two sides. Reflector shall be prismatic. 3. Provide Standard Colors as required by other markings: a. White b. Yellow c. White/red d. Yellow/red 4. All reflectors shall be installed using two part epoxy or bituminous adhesive. J. Wheel Stops: Precast of 3,500 psi air-entrained concrete, approximately 6" high, 9" wide, and 7'0" long, with chamfered corners and drainage slots on underside. N i N d Bituminous Concrete Pavement (Superpave)

8 PART 3 - EXECUTION 3.01 GENERAL A. Construct bituminous paving including graded aggregate base course, prime coat, tack coat, bituminous overlay and/or bituminous binders and/or wearing surface in accordance with applicable sections of Standard specifications and details shown on drawings. B. Perform work on D.O.T. Right-of-Way according to plans and specifications except where otherwise required by D.O.T. 1. Permit supersedes plans and specifications. 2. Interpretations of Permit and other directions by Authorized D.O.T. officials shall govern INSPECTION A. Examine the areas and conditions under which work of this Section will be installed. Correct conditions detrimental to proper and timely completion of the Work. Do not proceed until unsatisfactory conditions have been corrected. B. Proceeding with work identified in this section shall be construed as acceptance of conditions as being acceptable for work herein specified PREPARATION A. Complete the grading of sub-grades to the lines shown on the drawings and parallel to the finished elevations of the paved area, with allowances made for the thickness of the work to follow. B. Compact sub-grade using heavy equipment as recommended by geo-technical laboratory. a. Upon completion of fill, compacting and grading, the sub-grade shall be compacted to 98% of its standard maximum dry density; unless noted or detailed otherwise SUBGRADE PREPARATION A. Contractor shall test Subgrade for clay content in soils. B. Remove loose material from compacted subbase surface immediately before applying herbicide treatment or prime coat. C. Construct Subgrade in accordance with Department of Transportation specification section 209. D. Contractor is responsible for any aeration and/or compaction necessary to obtain specified compaction of 100% of maximum dry density at optimum moisture in accordance with ASTM D-698. E. Proof roll prepared subbase surface to check for unstable areas and areas requiring additional compaction. F. Notify Contractor of unsatisfactory conditions; do not begin paving work until deficient subbase areas corrected and ready to receive paving. G. Herbicide Treatment: a. Apply chemical weed control agent in strict compliance with manufacturer's recommended dosages and application instructions. b. Apply to compacted, dry subbase prior to application of prime coat. Bituminous Concrete Pavement (Superpave)

9 3.05 BASE COURSE A. General a. Install type and thickness of base course as indicated on drawings. b. Compact using rollers or hand tamps as necessary to bond and compact entire depth of base coarse to a 100% of maximum dry density at optimum moisture in accordance with ASTM D-698. B. Soil Bases Material (Sand clay) a. All Soil base material shall be natural or mixed in place, transported, placed and compacted in accordance with Georgia Department of transportation Standards. b. Soil shall be approved prior to placement. c. One layer shall not exceed 6 inches. C. Soil Cement a. All Soil Cement shall be mixed in place or plant mixed, transported, placed and compacted in accordance with Georgia Department of transportation Section 301 b. Minimum Strength of Soil cement shall be as follows: Thickness (inches) Strength psi 8 300psi psi psi c. Contractor shall NOT Plow, Harrow or blade mix. d. Mixing shall not begin unless air temperature is above 40 degrees F. and rising and soil temperature in the subgrade shall be above 50 degrees F. e. Soil Cement to be spread using a metered spreader in accordance with GDOT requirements. f. One layer not to exceed 8 inches. D. Graded aggregate Base Course a. Install graded aggregate base course to thickness indicated; if not indicated to minimum thickness as follows: b. Drives and parking areas other than those defined below: 8" thick after compaction. c. Service drives, kitchen drive, bus drive and parking: 8" thickness after compaction. d. Thickness to be placed 1. Minimum thickness of 4 thick 2. Maximum thickness of 8 thick 3.06 ASPHALT PREPARATION A. Prime Coat: a. Apply at rate of 0.20 to 0.30 gal./s.y., over compacted sub-grade. b. Apply material to penetrate and seal, but not flood, surface. c. Cure and dry long as necessary to attain penetration and evaporation of volatile materials. B. Tack Coat: a. Apply to contact surfaces of previously constructed asphalt or portland cement concrete and surfaces abutting or projecting into asphalt concrete pavement. b. Clean existing and contact surface prior to installing tack coat. c. Distribute at rate of 0.08 to 0.15 gal./s.y. of surface. c. Allow to dry until at proper condition to receive paving. d. Exercise care in applying bituminous materials to avoid smearing of adjoining concrete surfaces. e. Remove and clean damaged surfaces. Bituminous Concrete Pavement (Superpave)

10 f. Allow adequate time for drying and curing prior to placement of asphaltic mix PLACING MIX A. General: a. Place asphalt concrete mixture on prepared surface, spread and strike-off. b. Spread mixture at minimum temperature of 225 o F. (107 o C.). c. Place inaccessible and small areas by hand. d. Place each course to required grade, cross-section, and compacted thickness. e. Paving thickness to be as indicated; if not indicated minimum thickness after compaction to be 2" for 'light duty' pavement and 2-1/2" for 'heavy duty' pavement. C. Paver Placing: a. Place in strips min. 10' wide, unless otherwise acceptable to Architect. b. After first strip placed and rolled, place succeeding strips and extend rolling to overlap previous strips. c. Complete base course for section before placing surface course. d. Joints: 1. Make joints between old and new pavements or between successive days' work, to ensure continuous bond between adjoining work. 2. Construct joints with same texture, density and smoothness as other sections of asphalt concrete course. 3. Clean contact surfaces and apply tack coat ROLLING A. General: a. Begin rolling when mixture bears roller weight without excessive displacement. b. Compact mixture with hot hand tampers or vibrating plate compactors in areas inaccessible to rollers. B. Breakdown Rolling: 1. Accomplish breakdown or initial rolling immediately following rolling of joints and outside edge. 2. Check surface after breakdown rolling, and repair displaced areas by loosening and filling, if required, with hot material. C. Second Rolling: 3. Follow breakdown rolling soon as possible, while mixture hot. 4. Continue second rolling until mixture thoroughly compacted. D. Finish Rolling: 5. Perform finish rolling while mixture still warm enough for removal of roller marks. 6. Continue rolling until roller marks eliminated and course attained maximum density. E. Patching: 7. Remove and replace paving areas mixed with foreign materials and defective areas. 8. Cut-out such areas and fill with fresh, hot asphalt concrete. 9. Compact by rolling to max. surface density and smoothness. F. Protection: 10. After final rolling, permit no vehicular traffic on pavement until cooled and hardened. 11. Erect barricades to protect paving from traffic until mixture cooled enough not to mark. Bituminous Concrete Pavement (Superpave)

11 3.09 REMOVAL OF EXISTING PAVEMENT A. Where new pavement abuts existing pavement, remove existing as necessary using saw-cutting methods to obtain a straight and uniform line. a. DO NOT use percussion removal methods. b. Contact surfaces to be thoroughly cleaned. Apply tack coat to contact surface prior to application of asphalt mix HANDICAPPED PARKING; TRAFFIC AND LANE MARKINGS A. Cleaning: Sweep and clean surface to eliminate loose material and dust. B. Paint directional signage, arrows, lane dividers, parking space borders (stripping), handicapped symbols, as shown on drawings. If not shown on drawings, provide as a minimum: 1. Entrance and exit directional arrows at each entrance and exit. 2. Stop Bars, lane division and other markings required at intersections 3. Striping of Decel and Acel Lanes to comply with Georgia DOT Requirements 4. Lane divider lines on paved roadways where two way traffic will exist. 5. Parking space boarder stripping at each parking space. 6. Universal Handicapped symbol at each handicapped parking space. 7. Handicapped curb cuts to comply with ADA. C. Striping (on site): Use chlorinated-rubber base traffic lane-marking paint, factory-mixed, quick-drying, and non-bleeding unless specified otherwise. 1. Colors: a. White, except as otherwise indicated. b. Yellow at danger zones and as indicated. c. Blue to mark handicap areas indicated. 2. Line Width: 4" minimum except as otherwise indicated. 3. Do not apply traffic and lane marking paint until layout and placement verified with Architect. 4. Apply paint with mechanical equipment to produce uniform straight edges. 5. Apply in minimum of 2 coats at manufacturer's recommended rates. Paint coverage to be adequate to prevent bleed-thru of paving color. Additional coats may be required if black is visible through paint. D. Striping (off site): Use thermoplastic traffic lane markings in all public right-of-ways and where specified on site. 1. Colors: a. White, except as otherwise indicated. b. Yellow at danger zones and as indicated. 2. Line Width: 4" minimum except as otherwise indicated. 3. Lane markings in public right-of-way shall conform to Georgia Department of Transportation striping standards. E. Plastic pavement Markings (Reflective Road markers) 1. Provide color to match lane striping or as designated by Georgia Department of Transportation. 2. Provide adequate amount of adhesive to secure marker to pavement surface WHEEL STOPS A. Secure wheel stops to asphalt concrete surface with min. two 3/4" dia. galvanized steel dowels embedded in precast concrete at 1/3 points. a. Size length of dowel to penetrate min. 6" into asphalt concrete. b. Drill placement holes oversize and embed dowels in hot bituminous grout material. Bituminous Concrete Pavement (Superpave)

12 3.12 APPEARANCE OF ASPHALT A. Asphalt shall only be accepted only if appearance is acceptable. 1. Appearance of asphalt should appear smooth and uniform across entire paving area. 2. The following conditions are not acceptable: a. Marking from machinery. b. Damaged asphalt from stored construction materials. c. Locations in asphalt holding water. d. Differential joints in asphalt. e. Locations where asphalt has loose particles and appears non consistent. f. Excessive cutting and patching to repair non conforming asphalt. g. Grade shall be level with surrounding structures manholes, curbs, turndowns. 3. In cases where appearance is not acceptable the contractor shall be required remove and resurface entire area SAMPLING A. Contractor take samples at start of paving operation and at intervals throughout paving operations. B. Contractor to take samples of plant mixture from truck and test to determine conformance to specified pavement test properties, bitumen content, and gradation requirements. a. One sample each 500 tons or portion thereof; min. one sample. C. Contractor to obtain samples of finished pavement including that which spans longitudinal joint. a. Obtain samples of size adequate to determine density, thickness and other specified requirements. b. Cut one core per 100 tons; min. 3 cores, max. 5 cores per day's operation. D. Contractor responsible for tests. a. Furnish power saw or core drill and labor for cutting samples. b. Backfill holes with fresh paving mixture and thoroughly compact to finished surface and grade TESTING A. Tests required of samples taken as specified in "Sampling" paragraph above and for control testing as specified below. a. Submit copies of all test reports to Owner's representative. b. Immediately report to Owner's representative any test failing to meet specified requirements and recommended corrective action. 4. Control Testing: a. Comply with minimum number and types of field tests listed below for project control: Type of Test Stability, flow, unit weight percent voids, total mix, and percent voids filled. Number of Tests Determine from set of three Marshall specimens prepared from each four (4) hours of plant operation. Mechanical Marshall i. hammer may be used, provided it is ii. periodically calibrated against the results iii. obtained by the hand hammer. In-place density and thickness From set (three (3) sawed or cored samples) for iv. each four (4) hours of plant operation; one- Bituminous Concrete Pavement (Superpave)

13 half (½) v. should be obtained at joints. Extractions (ASTM D 2172) Sieve analysis (ASTM C 136) Percent of fractured faces of aggregate Two (2) per day. One (1) per shipment. One (1) per shipment. b. Frequency of tests increased by Owner's representative if proper control of bituminous plant and placing operation not being maintained with minimum number of tests specified FIELD QUALITY CONTROL A. General: During construction maintain established system of quality control to assure compliance with contract requirements and record of all materials, equipment and construction operations including, but not limited to, the following: a. Condition of existing surface. b. Gradation of aggregates. c. Percentage of fractured faces of aggregate. d. Mix design properties - Marshall tests complete. e. Safety requirements. f. Application of herbicides. g. Grade control. h. Preparation of bituminous mixes. i. Density and thickness of compacted mixes. j. Straightedge requirements. k. Test of plant mixtures. l. Determination of quantities. m. Correction of defective pavement. n. Surface preparation for application of traffic paint. o. Application of traffic markings. p. Installation of Wheel Stops. 5. Prior to acceptance of work covered under this Section, furnish Owner's representative copy of all records and test data and record of corrective action taken. END OF SECTION Bituminous Concrete Pavement (Superpave)

14 SECTION WALK, ROAD AND PARKING APPURTENANCES PART 1 - GENERAL 1.01 DESCRIPTION OF WORK A. Extent of walkway, roadway and parking appurtenances shown on drawings. B. Types of walkway, roadway and parking appurtenances include: 1. Traffic and directional signage. 2. Wheel stops 3. Pipe Bollards. 4. Sleeves B. Related Work Specified Elsewhere: 1. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division-1 Specification sections, apply to work of this Section. 2. Playing Courts and equipment specified in other sections. 3. Traffic Painting specified in other sections QUALITY CRITERIA A. Industry Standards: Industry standards as follows applies to work except as noted herein or otherwise indicated on drawings 1. Contractor keep current copy of Standard Specifications on file at site. 2. Conform to requirements of Department of Transportation, State of Georgia "Standard Specifications, Construction of Roads and Bridges", latest edition, hereinafter noted as "Standard Specifications" except for modifications or additions as specified herein. a. Where terms in Standard Specifications used, intent understood as follows: (1) "State" = Owner. (2) "Department" = Architect and/or Owner's representative. (3) "Engineer" = Owner's representative. (4) Proposal Form" = Proposal, General or Special Conditions or Technical Specifications. 3. Modify Standard Specifications by deletion references to method of measurement and basis for payment in Section Comply with local governing regulations if more stringent than herein specified SUBMITTALS A. Product Data: Submit manufacturer's or fabricator's specifications and installation instructions for products specified in this section, including finishes, anchorage requirements and setting diagrams. B. Shop Drawings: Submit shop drawings for each fabricated or manufacturer item specified in this section, showing types, sizes, location, construction, finish, anchorage, and other pertinent information. C. Samples: Submit two representative sample of each finish required for factory finished products if specified or requested by Architect. Walk, Road & Parking Appurtenances

15 PART 2 - PRODUCTS 2.01 TRAFFIC AND DIRECTIONAL SIGNAGE A Provide signs of type, size, location and text shown on drawings and specified in this Section. 1. Signs shall be aluminum 2. Minimum Size a. Regulatory Signs 24 x 24 b. Handicap and parking 12 x Minimum Gauge of material Signs shall have Protective Coating against dirt and graffiti 5. Paint shall be reflectorized for high visibility 6. Use only aluminum fasteners galvanized steel supports 7. Posts a. Galvanized or green coating b. Meet ASTM A123 c. Weight #3 lbs. per ft. A. Provide international shapes and symbols unless otherwise indicated. B. Comply with Georgia DOT Standard Specifications and Manual Uniform Traffic Control Devices as applicable for type, style, and sign installation WHEEL STOPS A. Provide precast concrete parking bumpers of shape and size shown on drawings. 1. Construct of concrete having 28 day compressive strength of 3000 psi, reinforced with 2 #3 deformed steel bars. 2. Cast in holes for anchors as indicated PIPE BOLLARDS A. Fabricate pipe bollards from Schedule 80 steel pipe. i. Cap bollards with 1/4" min. thickness steel plate. B. Fabricate sleeves for bollard anchorage from steel pipe with 1/4" thick steel plate welded to bottom of sleeve SLEEVES ( For Future Use) A. Sleeves : All sleeves shall be 6 in diameter. B. Provide number of sleeves on plans. If sleeves are not indicated provide sleeves to all islands and under all roadway and sidewalks every 500 minimum. All roadways and sidewalks shall have at least one sleeve. C. Sleeves shall be SDR35, C900 or Schedule 40 PVC piping. All fittings shall match pipe materials. D. Pipes shall be placed at a minimum depth of 3-0 below walks and 5-0 below roadway. E. Pipes shall be width of roadway or sidewalk plus 10 on each side. F. All sleeves shall be turned 90 degrees toward surface. At surface piping shall extent above ground a minimum of 2-0. G. Last joints at ends or elbow up shall not be glued. PART 3 - EXECUTION 3.01 INSTALLATION A. Anchor each item securely as shown on drawings or, as recommended by manufacturer if not shown. B. Set members straight, true and plumb. C. Where anchorage in concrete, brace well until concrete set. Walk, Road & Parking Appurtenances

16 3.02 INSTALLATION OF BOLLARDS A. Anchor bollards in concrete by means of pipe sleeves preset and anchored into concrete. 1. After bollards inserted into sleeves, fill annular space between bollard and sleeve solid with nonshrink, nonmetallic grout, mixed and placed to comply with grout manufacturer's directions INSTALLATION OF TRAFFIC AND DIRECTIONAL SIGNAGE A. Posts shall be installed with a 3:1 cement sand mix. B. Posts shall be placed as close to vertical as possible. C. Sign Location 1. On road side 5 edge of pavement 2. At parking stalls 3 behind parking space or behind sidewalk if applicable 3. Other areas per location on plans. D. Height of signs 1. Handicap - 7 from bottom of sign to ground surface 2. Regulatory and parking 5 from bottom of sign to ground 3.04 ADJUST AND CLEAN A. Touch-Up Painting: Cleaning and touch-up painting of field welds, bolted connections and abraded areas of shop paint on ferrous metal specified in Division 9 sections. B. Galvanized surfaces: Clean field welds, bolted connections and abraded areas, apply 2 coats of galvanizing repair paint. C. Restore wood finishes damaged during shipment or installation of work. D. Protect from damage during course of construction and repair or replace if damage occurs, at no additional cost to Owner. E. Provide protective coverings, retain intact and remove simultaneously from similarly finished items to preclude nonuniform oxidation and discoloration. END OF SECTION Walk, Road & Parking Appurtenances

17 SECTION PLAIN CEMENT CONCRETE PAVEMENT PART 1 - GENERAL 1.01 RELATED DOCUMENTS A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division-1 Specification sections, apply to work specified in this Section DESCRIPTION OF WORK A. Extent of plain cement concrete paving shown on drawings, including curbs, gutters, and pavement. B. Sidewalks specified in Section C. Prepared sub-base specified in Section "Earthwork". D. Concrete and related materials specified E. Joint fillers and sealers as specified 1.03 QUALITY ASSURANCE A. Codes and Standards: Comply with local governing regulations if more stringent than herein specified. B. Contractor to provide testing of concrete in accordance with requirements of Section 03300, Cast-In-Place-Concrete. Provide as a minimum the following: 1. Slump test; One set per truck. 2. Compression Tests; One set per pour SUBMITTALS A. Furnish samples, manufacturer's product data, test reports, and materials certifications required in referenced sections for concrete and joint fillers and sealers JOB CONDITIONS A. Traffic Control: Maintain access for vehicular and pedestrian traffic as required for other construction activities. B. Utilize flagmen, barricades, warning signs and warning lights as required. PART 2 - PRODUCTS 2.01 MATERIALS A. Forms: Steel, wood, or other suitable material of size and strength to resist movement during concrete placement and retain horizontal and vertical alignment until removal. 1. Use straight forms, free of distortion and defects. 2. Use flexible spring steel forms or laminated boards to form radius bends as required. 3. Coat forms with non-staining form release agent not discoloring or defacing surface of concrete. Plain Cement Concrete Pavement

18 B. Welded Wire Mesh: Welded plain cold-drawn steel wire fabric, ASTM A Furnish in flat sheets, not rolls, unless otherwise acceptable to Architect. C. Reinforcing Bars: Deformed steel bars, ASTM A 615, Grade 40. D. Joint Dowel Bars: Plain steel bars, ASTM A 615, Grade Cut bars true to length with ends square and free of burrs. E. Metal Expansion Caps: Furnish for one end of each dowel bar in expansion joints. 1. Design caps with one end closed and min. length of 3" to allow bar movement min. of 1", unless otherwise indicated. F. Hook Bolts: ASTM A 307, Grade A bolts, internally and externally threaded. 1. Design hook bolt joint assembly to hold coupling against pavement form and in position during concreting operations, and to permit removal without damage to concrete or hook bolt. G. Concrete Materials: Comply with requirements of applicable Division 3 sections for concrete materials, admixtures, bonding materials, curing materials, and others as required. H. Expansion Joint Materials: Comply with requirements of applicable Division 7 sections for preformed expansion joint fillers and sealers. 1. Metal Keyway not permitted as expansion materials. I. Anti-Spalling Compound: 50% (by volume) boiled linseed oil and 50% (by volume) mineral spirits, complying with AASHTO M-233. J. Liquid-Membrane Forming Curing Compound: 1. Complying with ASTM C 309, Type I, Class A unless other type acceptable to Architect. 2. Max. moisture loss of 0.55 gr./sq. cm. when applied at 200 s.f./gal. 3. Products: Subject to compliance with requirements, provide one of following: a. "Masterseal"; Master Builders. b. "A-H 3 Way Sealer"; Anti-Hydro Waterproofing Co. c. "Ecocure"; Euclid Chemical Co. d. "Clear Seal"; A.C. Horn. e. "J-20 Acrylic Cure"; Dayton Superior. f. "Sure Cure"; Kaufman Products Inc. g. "Spartan-Cote"; The Burke Co. h. "Sealkure"; Toch Div. - Carboline. i. "Kure-N-Seal"; Sonneborn-Contech. j. "Polyclear"; Upco Chemical/USM Corp. k. "L&M Cure"; L & M Construction Chemicals. l. "Klearseal"; Seton Industries. m. "LR-152"; Protex Industries. K. Bonding Compound: Polyvinyl acetate or acrylic base, rewettable type. 1. Products: Subject to compliance with requirements, provide one of the following: a. "J-40 Bonding Agent"; Dayton Superior Corp. b. "Weldcrete"; Larsen Products. c. "Everbond"; L & M Construction Co. d. "Hornweld"; A.C. Horn. e. "Sonocrete"; Sonneborn-Contech. f. "Acrylic Bondcrete"; The Burke Co. Plain Cement Concrete Pavement

19 L. Epoxy Adhesive: 1. ASTM C 881, two component material suitable for use on dry or damp surfaces. 2. Provide material "Type", "Grade", and "Class" to suit project requirements. 3. Products: Subject to compliance with requirements, provide one of the following: a. "Epoxtite"; A.C. Horn. b. "Edoco 2118 Epoxy Adhesive"; Edoco Technical Prod. c. "Silkadur Hi-Mod"; Sika Chemical Corp. d. "Euco Epoxy 463 or 615"; Euclid Chemical Co. e. "Patch and Bond Epoxy"; The Burke Co. f. "Sure-Poxy"; Kaufman Products Inc CONCRETE MIX, DESIGN AND TESTING A. Comply with requirements of applicable Division 3 sections for concrete mix design, sampling and testing, and quality control, and as herein specified. 1. Design mix to produce standard-weight concrete consisting of portland cement, aggregate, air-entraining admixture and water to produce following properties: a. Slump Range: 2-4"; unless noted. b. Air Content: 5% to 8%. c. W-C Ratio: 0.45 to Minimum compressive strength of concrete to be as follows: a. Drives: 3500 psi. at 28 days, unless otherwise indicated. b. Curbs and Gutters: 3500 psi. at 28 days, unless otherwise indicated. c. Service Area Slabs: 4000 psi. at 28 days, unless otherwise indicated. PART 3 - EXECUTION 3.01 GENERAL A. Minimum concrete thickness shall be the following: 1. Kitchen service yards 8 minimum thickness with #4 rebar 12 on center each way. 2. High school lab service yards 8 minimum thickness with #4 rebar 12 on center each way. 3. Curb and Gutter see detail for size 4. Concrete flumes and swales 6 minimum thickness with #4 rebar 18 on center each way 3.02 SURFACE PREPARATION A. Compact sub-base at areas to receive concrete paving (Walks, Drives, Curbs and Gutters) and 10'-0" beyond limits of paving as described herein. B. Compact sub-base to 98% of Standard Proctor Maximum Dry Density (ASTM D698) to a minimum depth of 3'-0". 1. Compaction shall be accomplished through use of vibratory compaction equipment. 2. Moisten soil as required to obtained specified densities. C. Compact surface to 100% of Standard Proctor Maximum Dry Density (ASTM D698). 1. Compaction shall be accomplished through use of static rolling equipment. 2. Moisten soil as required to obtained specified densities. D. Remove loose material from compacted surface immediately before placing concrete. Plain Cement Concrete Pavement

20 3.03 FORM CONSTRUCTION A. Set forms to required grades and lines, rigidly braced and secured. 1. Install sufficient forms to allow continuous progress of work and so forms can remain in place min. 24 hours after concrete placement. 2. Check completed formwork for grade and alignment to following tolerances: a. Top of forms max. 1/8" in 10'. b. Vertical face on longitudinal axis, max. 1/4" in 10'. 3. Clean forms after each use, and coat with form release agent often as required to ensure separation from concrete without damage REINFORCEMENT A. Locate, place and support reinforcement as specified in Division 3 sections, unless otherwise indicated CONCRETE PLACEMENT A. General: Comply with requirements of Division 3 sections for mixing and placing concrete, and as herein specified. B. Do not place concrete until sub-base and forms checked for line and grade. 1. Moisten sub-base if required to provide uniform dampened condition at time concrete placed. 2. Do not place concrete around manholes or other structures until at required finish elevation and alignment. C. Place concrete using methods preventing segregation of mix. 1. Consolidate concrete along face of forms and adjacent to transverse joints with internal vibrator. 2. Keep vibrator away from joint assemblies, reinforcement, or side forms. 3. Use only square-faced shovels for hand-spreading and consolidation. 4. Consolidate with care to prevent dislocation of reinforcing, dowels, and joint devices. D. Use bonding agent at locations where fresh concrete placed against hardened or partially hardened concrete surface. E. Deposit and spread concrete in continuous operation between transverse joints, far as possible. 1. If interrupted for more than 1/2-hour, place construction joint. F. Curbs and Gutters: Automatic machine used for curb and gutter placement at Contractor's option. 1. If machine placement used, submit revised mix design and laboratory test results, which meet or exceed minimums specified. 2. Machine placement must produce curbs and gutters to required cross-section, lines, grades, finish, and jointing as specified for formed concrete. 3. If results not acceptable remove and replace with formed concrete as specified JOINTS A. General: 1. Construct expansion, weakened-plane (contraction), and construction joints true-to-line with face perpendicular to surface of concrete. 2. Construct transverse joints at right angles to centerline, unless otherwise indicated. 3. When joining existing structures, place transverse joints to align with previously placed joints, unless otherwise indicated. Plain Cement Concrete Pavement

21 B. Weakened-Plane (Contraction) Joints: 1. Provide weakened-plane (contraction) joints, sectioning concrete into areas shown on drawings, if not indicated as follow: a. At maximum of 5'-0" on center each way. 2. Construct weakened-plane joints for min. depth equal to 1/4 concrete thickness, as follows: a. Tooled Joints: Form weakened-plane joints in fresh concrete by grooving top portion with recommended cutting tool and finishing edges with jointer. 3. Saw-Cut joints of any type are NOT acceptable. C. Construction Joints: 1. Place construction joints at end of placements and at locations where placement operations stopped for period of more than 1/2-hour, except where such pours terminate at expansion joints. 2. Construct joints as shown or, if not shown, use removable wood keyway-sections to form keyway. 3. Where load transfer-slip dowel devices are used, install so that one end of each dowel bar free to move. D. Expansion Joints: 1. Provide premolded joint filler for each expansion joint. 2. Provide expansion joints where concrete abuts buildings, curbs, catch basins, manholes, inlets, structures, fixed objects and other locations indicated. 3. Provide expansions joints in pavement (drives, curb and gutter) as follows: a. Locate expansion joints at a maximum of 30' o.c. along length of pavement, unless otherwise indicated. b. Where concrete over 30'-0" wide, provide at 30'-0" on center along width of pad or walk. c. Curb and gutter to have expansion joints at every change of direction. 4. Extend joint fillers full-width and depth of joint, and min. of 1/2" or max. of 1" below finished surface where joint sealer indicated; if no joint sealer, place top of joint filler flush with finished concrete surface. 5. Furnish joint fillers in one-piece lengths for full width being placed, wherever possible. a. Where more than one length required, lace or clip joint filler sections together. 6. Protect top edge of joint filler during concrete placement with a metal cap or other temporary material; remove protection after concrete placed on both sides of joint. E. Fillers and Sealants: Comply with the requirements of applicable Division 7 sections for preparation of joints, materials, installation, and performance. 1. Seal all exterior expansion joints with sealant CONCRETE FINISHING A. Screeding and Floating: 1. After striking-off and consolidating concrete, smooth surface by screeding and floating. 2. Use hand methods only where mechanical floating not possible. 3. Adjust floating to compact surface and produce uniform texture. 4. After floating, test surface for trueness with 10' straightedge. 5. Distribute concrete as required to remove surface irregularities, and refloat repaired areas to provide continuous smooth finish. 6. Work edges of slabs, gutters, back top edge of curb, and formed joints with an edging tool, and round to 1/2" radius, unless otherwise indicated. 7. Eliminate tool marks on concrete surface. Plain Cement Concrete Pavement

22 B. Finishing: After completion of floating and troweling when excess moisture or surface sheen disappears, complete surface finishing, as follows: 1. Broom Finish: a. Draw fine-hair broom across concrete surface, perpendicular to line of traffic. b. Repeat operation if required to provide a fine line texture acceptable to Architect. c. Inclined Slab Surfaces: Provide coarse, non-slip finish by scoring surface with stiff-bristled broom, perpendicular to line of traffic. C. Form Removal: 1. Do not remove forms for 24 hours after concrete placed. 2. After form removal, clean ends of joints and point-up any minor honeycombed areas. 3. Remove and replace areas or sections with major defects, as directed by Architect CURING A. Protect and cure finished concrete paving, complying with applicable requirements of Division 3 sections. B. Use membrane-forming curing and sealing compound or approved moist-curing methods. C. Anti-Spalling Treatment: 1. Use second coat of curing and sealing compound or, if moist curing methods used, apply anti-spalling compound over concrete. 2. Apply compounds to concrete surfaces no sooner than 28 days after placement, to clean, dry concrete free of oil, dirt, and other foreign material. 3. Apply curing and sealing compound at max. coverage rate of 300 s.f./gal. 4. Apply anti-spalling compound in two sprayed applications. a. First application rate: 40 s.y./gal. b. Second application rate: 60 s.y./gal. c. Allow complete drying between applications REPAIRS AND PROTECTIONS A. Repair or replace broken or defective concrete, as directed by Architect. B. Drill test cores where directed by Architect, when necessary to determine magnitude of cracks or defective areas. 1. Fill drilled core holes in satisfactory pavement areas with portland cement concrete bonded to pavement with epoxy adhesive. C. Protect concrete from damage until acceptance of work. 1. Exclude traffic from pavement for min. 14 days after placement. 2. When construction traffic permitted, maintain pavement clean as possible by removing surface stains and spillage of materials as they occur. D. Sweep concrete pavement and wash free of stains, discolorations, dirt and other foreign material just prior to final inspection. END OF SECTION Plain Cement Concrete Pavement

23 PART 1 - GENERAL 1.01 WORK INCLUDED A. Extent of concrete walks shown on drawings RELATED WORK SECTION SIDEWALKS A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division-1 Specification sections, apply to work of this Section. B. Earthwork and prepared subbase is specified in sections C. Concrete and related materials as specified sections. D. Joint Fillers and Sealers are specified sections QUALITY ASSURANCE A. Codes and Standards: Comply with local governing regulations if more stringent than herein specified SUBMITTALS A. Submit samples, manufacturer's product data, test reports and material certification as required in referenced sections of concrete work and joint fillers and sealers JOB CONDITIONS A. Traffic Control: Maintain access for vehicular and pedestrian traffic as required for other construction activities. 1. Provide flagmen, barricades, warning signs and warning lights for movement of traffic and cause least interruption of work. PART 2 - PRODUCTS 2.01 MATERIALS A. Forms: Steel, wood, or other suitable material of size and strength to resist movement during concrete placement and to retain horizontal and vertical alignment until removal. Use straight forms, free of distortion and defects. 1. Use flexible spring steel forms or laminated boards to form radius bends as required. 2. Coat forms with non-staining form release agent that will not discolor or deface surface of concrete. B. Welded Wire Mesh: Welded cold-drawn steel wire fabric complying with ASTM A 185. C. Concrete Materials: Comply with requirements of applicable Division 3 sections for concrete materials, admixtures, bonding materials, curing materials, and others as required. D. Expansion Joint Materials: Comply with requirements of Division-7 sections for preformed expansion joint fillers and sealers. Sidewalks