Attachment J1 - Project Manual.pdf

TABLE OF CONTENTS

Document Title No. of Pages

Bid Form

Supplemental Specifications and Special Provisions:

Standard Specifications For Highway Construction

Asphalt Pavement Reinforcement System

Concrete Deck Drainage System Concrete Work Erosion Control Fog Seal Grading of Existing Ditch Landscape Edging

Pavement Sections Sequence of Construction Tree Planting And Mulching Vegetation Control Water For Seeding And Solid Sodding

Wheel Stops

Proposal of

Address: Phone:

for the paving of the parking lot and roads, replacement of existing drainage structures, shaping of existing ditches, and other improvements at the National Center for Toxicological Research located in Jefferson, AR:

BID SCHEDULE

ITEM DESCRIPTION QTY. UNIT

UNIT

PRICE

PRICE

EXTENSION

1 Bonds and Insurance LS $ $

2 Erosion Control LS $ $

3 Removal and Disposal of Curb LS $ $

Removal and Disposal of Pipe

Culvert

EACH $ $

5 Removal and Disposal of Walks SQ.YD. $ $

Removal and Disposal of Junction

Box

EACH $ $

7 Storm Drain Backfill CU.YD. $ $

8 Grading Existing Ditch L.F. $ $

9 Fog Seal SQ. YD. $ $

10 Overlay of Concrete Driveway SQ. YD. $ $

Overlay with Leveling Pavement

Section

SQ.YD. $ $

12 Overlay Pavement Section SQ.YD. $ $

13 Reconstructed Pavement Section SQ.YD. $ $

ACHM Patching of Existing

Roadway

SQ.YD. $ $

15 Cold Milling SQ.YD. $ $

15” Reinforced Concrete Pipe Culverts (Class III)

L.F. $ $

18” Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

ITEM DESCRIPTION QTY. UNIT UNIT PRICE

PRICE

EXTENSION

24” Reinforced Concrete Pipe Culverts (Class III)

L.F. $ $

30” Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

36” Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

42” Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

22”X14" Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

29”X18" Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

36"X23" Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

15” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

18” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

24” Flared End Sections for Reinforced Concrete Pipe Culverts

EACH $ $

30” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

36” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

42” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

22"X14” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

29"X18” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

36”X23" Flared End Sections for Reinforced Concrete Pipe Culverts

EACH $ $

34 Area Drain EACH $ $

35 Area Drain Adjusted to Grade EACH $ $

36 Pavement Repair Over Culverts CU. YD. $ $

37 Solid Sodding SQYD $ $

EXTENSION

38 Concrete Curb L.F. $ $

39 Concrete Sidewalks SQYD $ $

40 Refl. Paint Pvmt. Mark. White (4") L.F. $ $

Refl. Paint Pvmt. Mark. White

(12") L.F. $ $

Refl. Paint Pvmt. Mark. Yellow

(4") L.F. $ $

43 Refl. Paint Pvmt. Mark. Blue (4") L.F. $ $

Refl. Paint Pvmt. Mark.

(WHLCHR)

EACH $ $

45 Refl. Paint Pvmt. Mark. (ARROW) EACH $ $

Refl. Paint Pvmt. Mark. (BIKE

EMB.)

EACH $ $

47 Pipe Bollard EACH $ $

48 Wheel Stop EACH $ $

49 Signs with Support Assembly EACH $ $

50 Valve Box EACH $ $

51 Flagpole EACH $ $

52 Spoils Area Grading LS $ $

53 Park Bench EACH $ $

54 Ginkgo Trees EACH $ $

55 Hardwood Mulch SQYD $ $

56 Deck-o-drain L.F. $ $

57 Metal Landscape Edging L.F. $ $

EXTENSION

Asphalt Reinforcement of Existing Patches

L.F. $ $

SUBTOTAL $

Mobilization/Demobilization

(UNIT BID AMOUNT MAY NOT

EXCEED 5% OF BASE BID

SUBTOTAL)

LS

ADDITIVE ALTERNATE NO. 1

Reconstructed Driveway Pavement

Section

SQ.YD. $ $

61 Storm Drain Backfill CU. YD. $ $

18” Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

24” Reinforced Concrete Pipe Culverts (Class III)

L.F. $ $

30” Reinforced Concrete Pipe

Culverts (Class III) L.F. $ $

18” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

30” Flared End Sections for

Reinforced Concrete Pipe Culverts

EACH $ $

67 Drop Inlet (Type E) EACH $ $

68 Solid Sodding SQYD $ $

TOTAL ADDITIVE ALTERNATE NO. 1 $

TOTAL $

Base Bid

Additive Alternative No. 1 – Building 85 Driveway

**NOTE: Prices indicating the total amount of the bid must be shown in both words and figures. Written prices will control in case of a discrepancy. Mobilization/Demobilization will be paid at bid price as long as it does not exceed 5% of the base bid subtotal even if alternates are bid and selected. Additive Alternate items unit price and Base Bid unit price to match. If Additive Alternate and Base Bid unit prices do not match, then the lower of the unit prices will be used to calculate Price Extension and bid.

CONTRACT & RELATED DOCUMENTS

NATIONAL CENTER FOR TOXICOLOGICAL RESEARCH

PAVEMENT AND DRAINAGE IMPROVEMENTS

3900 NCTR ROAD

JEFFERSON, AR 72079

MARCH 2020

IDIQ CONTRACT NO.: HHSF223201610018I

TASK ORDER: HHSF22301009T

TASK ORDER PROPOSAL REQUISITION: 1211764

2 IDIQ CONTRACT NO.: HHSF223201610018I

SPECIFICATIONS LISTING

IDIQ CONTRACT NO.: HHSF2232016100181

The following specifications are for this project. In case of conflict, the specifications shall govern.

TABLE OF CONTENTS

STANDARD SPECIFICATIONS FOR HIGHWAY CONSTRUCTION

ASPHALT PAVEMENT REINFORCEMENT SYSTEM

CONCRETE DECK DRAINAGE SYSTEM

CONCRETE WORK

EROSION CONTROL

FOG SEAL

GRADING OF EXISTING DITCH

LANDSCAPE EDGING

PAVEMENT SECTIONS

SEQUENCE OF CONSTRUCTION

TREE PLANTING AND MULCHING

VEGETATION CONTROL

WATER FOR SEEDING AND SOLID SODDING

WHEEL STOPS

SUPPLEMENTAL SPECIFICATION

IDIQ CONTRACT NO.: HHSF223201610018I

STANDARD SPECIFICATIONS FOR HIGHWAY CONSTRUCTION

Description. The Standard Specifications for Highway Construction, Arkansas Department of

Transportation 2014 Edition shall apply for construction except where here in modified by project specific specifications.

The following list is of all project items with the governing specification:

Section Number Pay Item

Project Specification Bonds and Insurance

Project Specification Erosion Control

ARDOT 202 Removal and Disposal of Curb

ARDOT 202 Removal and Disposal of Pipe Culvert

ARDOT 202 Removal and Disposal of Walks

ARDOT 202 Removal and Disposal of Junction Box

ARDOT 210 Storm Drain Backfill

Project Specification Grading Existing Ditch

Project Specification Fog Seal

Project Specification Overlay of Concrete Driveway

Project Specification Overlay with Leveling Pavement Section

Project Specification Overlay Pavement Section

Project Specification Reconstructed Pavement Section

Project Specification ACHM Patching of Existing Roadway

ARDOT 412 Cold Milling Asphalt Pavement

ARDOT 606 15” Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 18” Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 24” Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 30” Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 36” Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 42” Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 22”X14" Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 29”X18" Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 36"X23" Reinforced Concrete Pipe Culverts (Class III)

ARDOT 606 15” Flared End Sections for Reinforced Concrete Pipe Culverts

ARDOT 606 18” Flared End Sections for Reinforced Concrete Pipe Culverts

ARDOT 606 24” Flared End Sections for Reinforced Concrete Pipe Culverts

ARDOT 606 30” Flared End Sections for Reinforced Concrete Pipe Culverts

ARDOT 606 36” Flared End Sections for Reinforced Concrete Pipe Culverts

ARDOT 606 42” Flared End Sections for Reinforced Concrete Pipe Culverts

ARDOT 606 22"X14” Flared End Sections for Reinforced Concrete Pipe Culverts

ARDOT 606 29"X18” Flared End Sections for Reinforced Concrete Pipe Culverts

ARDOT 606 36”X23" Flared End Sections for Reinforced Concrete Pipe Culverts

STANDARD SPECIFICATIONS FOR HIGHWAY CONSTRUCTION

Project Specification Area Drain

Project Specification Area Drain Adjusted to Grade

ARDOT 615 Pavement Repair Over Culverts (Concrete)

ARDOT 624 Solid Sodding

Project Specification Concrete Curb

Project Specification Concrete Sidewalks

ARDOT 718 Refl. Paint Pavement Marking White (4")

ARDOT 718 Refl. Paint Pavement Marking White (12")

ARDOT 718 Refl. Paint Pavement Marking Yellow (4")

ARDOT 718 Refl. Paint Pavement Marking Blue (4")

ARDOT 718 Refl. Paint Pavement Marking (WHLCHR)

ARDOT 718 Refl. Paint Pavement Marking (ARROW)

ARDOT 718 Refl. Paint Pavement Marking (BIKE EMB.)

Plan Detail Pipe Bollard

Project Specification Wheel Stop

ARDOT 726 & 729 Signs with Support Assembly

Plan Detail Valve Box

Plan Detail Flagpole

ARDOT 210 Spoils Area Grading

Project Specification Reconstructed Driveway Pavement Section

Plan Detail Park Bench

Project Specification Tree Planting and Mulching

Project Specification Concrete Deck Drainage System

Project Specification Landscape Edging

Project Specification Asphalt Reinforcement over Existing Patch

SUPPLEMENTAL SPECIFICATION

IDIQ CONTRACT NO.: HHSF223201610018I

ASPHALT PAVEMENT REINFORCEMENT SYSTEM

Description. Furnish and place a high strength asphalt reinforcement within the pavement structure as a moisture barrier and stress relieving interlayer. The HS Asphalt reinforcement must have an elastomeric polymer coating, bitumen coatings are not eligible for consideration.

Quality Control. Before installing the asphalt reinforcement, arrange a meeting at the site with the manufacturer’s representative and, where applicable, the asphalt reinforcement installer.

Notify the Engineer at least 5 days in advance of the time of the meeting.

A manufacturer’s representative must be present, at minimum, for the first day of installation of the engineered asphalt reinforcement and available thereafter upon request by the

Engineer.

Materials. (a) Asphalt Reinforcement. Provide asphalt reinforcement meeting the requirements in Table 1. Provide a copy of the manufacturer's specifications to the Engineer at the pre-construction meeting or no later than five working days prior to installation. Material must be certified manufactured in the USA.

Table 1

Asphalt Reinforcement Properties

Property Test Method Min Max

Asphalt Retention, L/m2 ASTM D 6140 0.46 -

Fabric Weight, g/m2 ASTM D 5261 237

Tensile strength, MD & CMD, kN/m ASTM D 5035 50

Strain at Maximum Load, % ASTM D 5035 - 5

Puncture Strength, N ASTM D 6241 1780

Melting Point, °C ASTM D 276 232

Permeability cm/sec ASTM D 5084 3.2X10-11

Recyclability without Screening % AASHTO T283-07 >95% of control

Reinforcement Fiberglass Strand Spacing Inches <0.25

(b) Storage and Handling. Store the asphalt reinforcement in accordance with the manufacturer's recommendations in a dry covered condition free from dust, dirt, and moisture.

(c) Tack Coat. Furnish AC-20-5TR that meets the requirements in Table 2. The rate will be shown on the plans and paid for separately.

ASPHALT PAVEMENT REINFORCEMENT SYSTEM

Table 2

AC-20-5TR Properties

Property Test Procedure Min Max

Polymer TR

Polymer Content, % 5

Dynamic Shear, G*/sin δ, 64°C, 10 rad/s, kPA AASHTO T315 1.0 -

Viscosity, 140°F, poise AASHTO T202 2,000 -

Penetration, 77°F, 100g 5 sec. AASHTO T49 75 115

Elastic Recovery, 50°F, % Recovery, 1 hour ASTM D 6084 55 -

Softening Point, °F AASHTO T53 120 -

Flash point, C.O.C., °F AASHTO T48 425 -

Test on Residue from Thin-Film Oven Test: AASHTO T179

Retained Penetration Ratio, 77°F AASHTO T49 0.60 1.00

Tests on Residue from RTFO Aging and PAV: AASHTO R28

Creep Stiffness, S, -18°C, MPa AASHTO T313 - 300

Creep Stiffness, m-value, -18°C AASHTO T313 0.300 -

Construction. (a)Surface Preparation. Prepare the surface by removing raised pavement markers and objectionable material such as moisture, dirt, sand, leaves, and other loose impediments from the surface before placing any material. Remove vegetation from pavement edges. Mill rutted and low spots in the pavement or place a leveling course as shown on the plans.

Do not place asphalt binder or the asphalt reinforcement when weather conditions, in the judgment of the Engineer, are not suitable. Air and pavement temperatures must be sufficient to allow the tack coat to hold the asphalt reinforcement in place. The air temperature must be 50ºF and rising for placement of the asphalt tack coat.

(b) Tack Coat. Apply a uniform tack coat at the specified rate and at the manufacture’s recommended application temperature unless otherwise directed. Apply the tack coat in a uniform manner to avoid streaks and other irregular patterns. Apply a thin, uniform tack coat to all contact surfaces of curbs, structures, and all joints. Prevent splattering of tack coat when placed adjacent to curb, gutter, and structures. Roll the tack coat with a pneumatic-tire roller to remove streaks and other irregular patterns when directed. Apply tack coat to an area four inches wider than the asphalt reinforcement, and wide enough to cover any overlaps. Do not allow traffic on the tack coat.

(c) Asphalt Reinforcement Placement. Place the asphalt reinforcement promptly onto the tack coat with minimum folds or wrinkles. As directed by the Engineer, wrinkles or folds in excess of 1 in. must be slit and laid flat or pulled out and replaced. Apply additional tack coat as needed to repaired areas, or to any other areas as directed by the Engineer, to achieve adequate bond to the substrate. Remove and replace damaged asphalt reinforcement with cuts, tears, or any other apparent damage, in accordance with the manufacturer's recommendations, at the contractor's expense with the same type of material.

Pneumatic tire rolling must be used to remove air bubbles and to maximize asphalt reinforcement contact with the pavement surface, in accordance with the manufacturer's specifications and to the satisfaction of the Engineer. Longitudinal overlaps require 1-2 inches minimum. Transverse overlaps require 2-4 inches minimum.

ASPHALT PAVEMENT REINFORCEMENT SYSTEM

Broadcast clean sand or loose asphalt concrete mix to cover any excess tack coat that bleeds through the asphalt reinforcement under normal construction traffic. Remove any excess sand from the interlayer prior to placing the HMA overlay.

Do not allow traffic, except necessary construction traffic or emergency vehicles, on the asphalt reinforcement, unless approved by the Engineer. If traffic on the interlayer is approved by the Engineer, lightly broadcast clean sand over the asphalt reinforcement interlayer. Remove any loose sand prior to paving.

Closely follow placement of the asphalt reinforcement with the first lift of the HMA overlay. Place overlays on the same day, unless otherwise approved by the Engineer. In the event of rainfall on the asphalt reinforcement prior to the placement of the first lift of HMA overlay, allow the asphalt reinforcement to dry before the HMA is placed. Do not place mix at temperatures higher than the melting point of the asphalt reinforcement.

Method of Measurement. Asphalt Reinforcement Over Existing Patch will be measured by the square yard.

Asphalt reinforcement used in Overlay of Concrete Driveway or in Pavement Repair Over Culverts

(Concrete) will not be measured and paid for separately but is included in the unit price of these items.

Payment. The work performed and materials furnished in accordance with the item Asphalt

Reinforcement Over Existing Patch includes full compensation for cleaning the existing pavement, furnishing, preparing, hauling and placing all materials; for all manipulation, including rolling, and for all labor, tools, equipment and incidentals necessary to complete the work.

Payment will be made under:

Pay Item Pay Unit

Asphalt Reinforcement over Existing Patch Linear Foot

CONCRETE DECK DRAINAGE SYSTEM

Description. The concrete deck drainage system shall effectively collect and carry water away from sidewalk decks and other patio areas. The system shall resist wear and shall be non-corrosive.

Materials. The system shall be an easy to install drainage system made of PVC which resists wear and is non-corrosive. This section shall define a proprietary based specification for Deck-

O-Drain Drainage System by W.R. Meadows, Inc., or an equal product approved by the

Engineer. System must comply with Specifications Section for Submittal Procedures, submitting manufacturer’s product data and application instructions. Material parts may include:

1. Coupler - Deck-O-Drain PVC Coupler.

2. Adaptor - Deck-O-Drain PVC Adaptor.

3. Fitting - Deck-O-Drain PVC Fitting.

4. Joint Sealant - Deck-O-Seal Polysulfide Joint Sealant.

5. Backing Rod - Kool Rod Closed Cell Polyethylene Backer Rod.

6. Expansion Joint Filler - Deck-O-Foam Expansion Joint Filler.

7. Control Joint Filler - Deck-O-Joint Control Joint Filler.

Construction Requirements. Examine surfaces to receive membrane. Notify Engineer if surfaces are not acceptable. Do not begin installation until unacceptable conditions have been corrected. Install drainage system in accordance with manufacturer’s instructions. Along planned path for drain, drive short, 3 1 /2" wide stakes into the ground. Space stakes 30 inches apart.

Place two (2) nailing clips per each 10-foot section. Attach snap-on nailing clips and place drain over the stakes. Use couplers to ensure a straight, even line. After carefully aligning, nail firmly to stakes. Insert adapters as necessary. These may be hooked to 1 1 /2" or 2" PVC pipe. Pipe can be adapted to any direction.

Method of Measurement. Concrete Deck Drainage System will be measured in linear feet.

Basis of Payment. The contract unit price shall be full compensation for furnishing all materials, site preparation, acceptable maintenance of the completed items, subsequent removal of the items when applicable, permanent stabilization and/or material replacement of the areas disturbed by the removal of these items, and all labor, equipment, tools, and incidentals necessary to complete the work.

Concrete Deck Drainage System Linear Foot

CONCRETE WORK

PART 1 GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of Contract, including General and Supplementary

Conditions apply to work of this section.

1.02 SUMMARY

A. This Section includes the following work:

1. Storm drainage concrete structures.

2. Sanitary sewer manholes.

3. Concrete parking lot paving.

4. Concrete curbs and gutters.

5. Sidewalks.

6. Pipeline anchors and blocking.

7. Site concrete retaining walls.

B. Related Sections:

1. Section 02200 “Earthwork”.

2. Section 02661 “Water Distribution System”.

3. Section 02720 “Storm Drainage System”.

4. Section 02735 “Sanitary Sewer Collection System”.

1.03 SUBMITTALS

A. Product Data: Submit data for proprietary materials and items, as requested by Engineer.

B. Laboratory Test Reports: Submit laboratory test reports for concrete materials and mix design test.

C. Material Certificates: Provide materials certificates in lieu of materials laboratory test reports when permitted by Engineer. Material certificates shall be signed by manufacturer and

Contractor, certifying that each material item complies with, or exceeds, specified requirements.

1.04 QUALITY ASSURANCE

A. Codes and Standards: Comply with provisions of following codes, specifications and standards, except where more stringent requirements are shown or specified:

1. ACI 301 "Specifications for Structural Concrete for Buildings".

2. ACI 318 "Building Code Requirements for Reinforced Concrete".

3. ACI 330.1 “Standard Specification for Plain Concrete Parking Lots”

4. Concrete Reinforcing Steel Institute (CRSI), "Manual of Standard Practice".

5. ASTM A615 - Specification for Deformed and Plain Billet Steel Bars for Concrete

Reinforcement.

6. ASTM C94 - Specification for Ready-Mix Concrete.

7. ASTM D994 - Specification for Preformed Expansion Joint Filler for Concrete

(Bituminous Type).

8. Arkansas Highway & Transportation Department Standard Specifications –

Division 500 “Rigid Pavement”

B. Concrete Testing Service: Engage a testing laboratory acceptable to Engineer to perform material evaluation tests and to design concrete mixes.

C. Materials and installed work may require testing and retesting at any time during progress of work. Tests, including retesting of rejected materials and installed work, shall be done at

Contractor's expense.

1.05 PROJECT CONDITIONS

A. Protection of footings against freezing: Cover completed work at footing level with sufficient temporary or permanent cover as required to protect footings and adjacent subgrade against possibility of freezing; maintain cover for time period as necessary.

B. Protect adjacent finish materials against splatter during concrete placement.

PART 2 PRODUCTS

2.01 FORM MATERIALS

A. Forms: Metal, 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.

Use flexible spring steel or laminated boards to form radius bends as required.

B. Form Coatings: Provide commercial formulation form coating compounds that will not bond with, stain nor adversely affect concrete surfaces, and will not impair subsequent treatments of concrete surfaces.

C. Form Ties: Factory fabricated, adjustable length, removable or snap off metal form ties, designed to prevent form deflection and to prevent spalling concrete upon removal. Provide units which will leave no metal closer than 1½" to surface.

2.02 REINFORCING MATERIALS

A. Reinforcing Bars: ASTM A 615, Grade 60, deformed.

B. Welded Wire Fabric: ASTM A 185, fabricated into flat sheets, not rolls, unless otherwise approved by the Engineer.

C. Joint Dowel Bars: ASTM A615, Grade 60. Cut bars true to length with ends square and free of burrs.

D. Supports for Reinforcement: Bolsters, chairs, spacers and other devices for spacing, supporting and fastening reinforcing bars and welded wire fabric in place. Use wire bar type supports complying with CRSI specifications.

2.03 CONCRETE MATERIALS

A. Portland Cement: ASTM C 150, Type I. Use one brand of cement throughout project, unless otherwise acceptable to Engineer.

B. Normal Weight Aggregates: ASTM C 33, and as herein specified. Do not use fine or coarse aggregates containing spalling causing or other deleterious substances.

Local aggregates not complying with ASTM C 33 but which have shown by special test or actual service to produce concrete of adequate strength and durability may be used when acceptable to Engineer.

C. Water: Potable.

D. Air Entraining Admixture: ASTM C 260, certified by manufacturer to be compatible with other required admixtures.

Available Products: "MB VR or MB AE"; MasterBuilders or equal.

E. Water Reducing Admixture: ASTM C 494, Type A, and contain not more than 0.1% chloride ions.

Available Products: "Pozzolith Normal; Master Builders or equal.

F. Water Reducing, Non-Chloride Accelerator Admixture: ASTM C 494, Type E, and containing not more than 0.1% chloride ions.

Available Products: "Pozzolith 500"; Master Builders or equal.

G. Water Reducing, Retarding Admixture: ASTM C 494, Type D, and contain not more than

0.1% chloride ions.

Available Products: "Pozzolith Retarder; Master Builders or equal.

H. Prohibited Admixtures: Calcium chloride thyocyanates or admixtures containing more than 0.1 percent chloride ions are not permitted.

2.04 RELATED MATERIALS

A. Granular Base: Evenly graded mixture of fine and coarse aggregates to provide, when compacted, a smooth and even surface below slabs.

B. Non-Shrink Grout: CRD C 621, factory premixed grout, non-metallic.

Available Products: "Set Grout"; Master Builders or equal.

C. Absorptive Cover: Burlap cloth made from jute or kenaf, weighing approximately 9 oz.

per sq. yd., complying with ASSHTO M 182, Class 2.

D. Moisture Retaining Cover: One of the following, complying with ASTM C 171.

Waterproof paper.

Polyethylene film, 6 mil minimum

Polyethylene coated burlap.

E. Bonding Compound: Polyvinyl acetate or acrylic base.

Available Products: "SBR Latex"; Euclid Chemical Co. or equal.

F. Joint Fillers and Sealants: See Drawing details.

2.05 PROPORTIONING AND DESIGN OF MIXES

A. Prepare design mixes for each type and strength of concrete by either laboratory trial batch or field experience methods as specified in ACI 301. If trial batch method used, use an independent testing facility acceptable to Engineer for preparing and reporting proposed mix designs.

B. Design mixes to provide normal weight concrete with the following properties, as indicated on Drawings and schedules:

4000 psi 28-day compressive strength; W/C ratio, 0.46 maximum (air entrained) for slabs on ground and paving.

3500 psi 28-day compressive strength; W/C ratio, 0.46 maximum (air-entrained) for drainage structures and sanitary sewer manholes.

3000 psi 28-day compressive strength; W/C ratio, 0.46 maximum (air entrained) for concrete anchors and blocking, sidewalks, curb and gutter.

C. Adjustment to Concrete Mixes: Mix design adjustments may be requested by Contractor when characteristics of materials, job conditions, weather, test results, or other circumstances warrant; at no additional cost to Owner and as accepted by Engineer. Laboratory test data for revised mix design and strength results must be submitted to and accepted by Engineer before using in work.

D. Admixtures:

1. Use water reducing admixture in concrete as required for placement and workability.

2. Use non chloride accelerating admixture in concrete slabs placed at ambient temperatures below 50°F (10°C).

3. Use air entraining admixture in exterior exposed concrete, unless otherwise indicated. Add air entraining admixture at manufacturer's prescribed rate to result in concrete at point of placement having total air content with a tolerance of plus or minus 1½% within following limits:

a. Concrete exposed to freezing and thawing, deicer chemicals 6.0%.

b. Other concrete (not exposed to freezing, thawing, or hydraulic pressure):

2% to 4% air.

4. Use admixtures for water reducing and set control in strict compliance with manufacturer's directions.

E. Slump Limits: Not less than 1" nor more than 4" at point of placement.

2.06 CONCRETE MIXING

A. Ready Mix Concrete: Comply with requirements of ASTM C 94, and as herein specified.

During hot weather, or under conditions contributing to rapid setting of concrete, a shorter mixing time than specified in ASTM C 94 may be required.

PART 3 EXECUTION

3.01 GENERAL

A. Coordinate the installation of joint materials and vapor retarders with placement of forms and reinforcing steel.

B. Coordinate with the various trades to install grates, frames, castings, inserts, sleeves, anchors, templates, conduits, box forms, hangers, supports, drains, plumbing, etc. to be built into concrete work and ensure that they have been secured into position prior to placing concrete.

3.02 FORMS

A. General:

1. Design, erect, support, brace and maintain formwork to support vertical and lateral static, and dynamic loads that might be applied until such loads can be supported by concrete structure. Maintain formwork construction tolerances complying with

ACI 347.

2. Design formwork to be readily removable without impact, shock or damage to cast in place concrete surfaces and adjacent materials.

3. Construct forms to sizes, shapes, lines and dimensions shown, and to obtain accurate alignment, location, grades, level and plumb work in finished structures.

Provide for openings, offsets, chamfers, blocking, anchorages and inserts, and other features required in work. Solidly butt joints and provide back up at joints to prevent leakage of cement paste.

4. Fabricate forms for easy removal without hammering or prying against concrete surfaces. Provide crush plates or wrecking plates where stripping may damage cast concrete sur-faces.

5. Chamfer exposed corners and edges ¾”, or as indicated, using wood, metal, PVC or rubber chamfer strips fabricated to produce uniform smooth lines and tight edge joints.

B. Curbs, Sidewalks, and Parking Lot Paving:

1. Construct forms to the shape, lines, grades, and dimensions called for on the

Drawings.

2. Stake wood or metal forms securely in place, true to line and grade.

3. Brace forms to prevent change of shape or movement in any direction resulting from the weight of the concrete during placement.

4. Construct short-radius curved forms to exact radius.

5. Tops of forms shall not depart from grade line more than 1/4 inch when checked with a 10-foot straightedge.

6. Alignment of straight sections shall not vary more than 1/4 inch in 10 feet.

7. Forms shall be cleaned and oiled thoroughly after each use and before concrete is placed.

3.03 PLACING REINFORCEMENT

A. Comply with Concrete Reinforcing Steel Institute's recommended practice for "Placing

Reinforcing Bars, for details and methods of reinforcement placement and supports, and as herein specified.

B. Clean reinforcement of loose rust and mill scale, earth, ice, and other materials which reduce or destroy bond with concrete.

C. Accurately position, support and secure reinforcement against displacement by formwork, construction, or concrete placement operations. Locate and support reinforcing by metal chairs, runners, bolsters, spacers, and hangers, as required.

D. Place reinforcement to obtain minimum coverages for concrete protection. Arrange, space and securely tie bars and bar supports to hold reinforcement in position during concrete placement operations. Set wire ties so ends are directed into concrete, not toward exposed concrete surfaces.

E. Install welded wire fabric in as long lengths as practicable. Lap adjoining pieces at least one full mesh and lace splices with wire. Offset end laps in adjacent widths to prevent continuous laps in either direction.

3.04 INSTALLATION OF EMBEDDED ITEMS

A. General: Set and build into work anchorage devices and other embedded items required for other work that is attached to, or supported by, cast in place concrete.

3.05 PREPARATION OF FORM SURFACES

A. Clean re used forms of concrete matrix residue, repair and patch as required to return forms to acceptable surface condition.

B. Coat contact surfaces of forms with a form coating compound before reinforcement is placed.

3.06 CONCRETE PLACEMENT

A. Preplacement Inspection: Before placing concrete, inspect and complete formwork installation, reinforcing steel, and items to be embedded or cast in. Moisten wood forms immediately before placing concrete where form coatings are not used.

B. General: Comply with ACI 304 "Recommended Practice for Measuring, Mixing, Transporting, and Placing Concrete", and as herein specified.

Deposit concrete continuously or in layers of such thickness that no concrete will be placed on concrete which has hardened sufficiently to cause the formation of seams or planes of weakness.

Deposit concrete as nearly as practicable to its final location to avoid segregation.

C. Placing Concrete in Forms: Deposit concrete in forms in horizontal layers not deeper than

24" and in a manner to avoid inclined construction joints. Where placement consists of several layers, place each layer while preceding layer is still plastic to avoid cold joints.

1. Consolidate placed concrete by mechanical vibrating equipment supplemented by hand spading, rodding or tamping. Use equipment and procedures for consolidation of concrete in accordance with ACI 309.

2. Do not use vibrators to transport concrete inside forms. Insert and withdraw vibrators vertically at uniformly spaced locations not farther than visible effectiveness of machine. Place vibrators to rapidly penetrate placed layer and at least 6" into preceding layer. Do not insert vibrators into lower layers of concrete that have begun to set. At each insertion limit duration of vibration to time necessary to consolidate concrete and complete embedment of reinforcement and other embedded items without causing segregation of mix.

3. Concrete for manholes shall be vibrated to eliminate entrapped air voids and rock pockets. Special care shall be taken to vibrate around all pipes, however, exercise caution to prevent excessive vibration. Do not use vibrators to transport concrete inside forms.

D. Cold Weather Placing: Protect concrete work from physical damage or reduced strength which could be caused by frost, freezing actions, or low temperatures, in compliance with ACI

306 and as herein specified.

When air temperature has fallen to or is expected to fall below 40°F (4°C), uniformly heat water and aggregates before mixing to obtain a concrete mixture temperature of not less than 50°F

(10°C), and not more than 80°F (27°C) at point of placement.

1. Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade or on subgrade containing frozen materials.

2. Do not use calcium chloride, salt and other materials containing antifreeze agents or chemical accelerators, unless otherwise accepted in mix designs.

E. Hot Weather Placing: When hot weather conditions exist that would seriously impair quality and strength of concrete, place concrete in compliance with ACI 305 and as herein specified.

1. Cool ingredients before mixing to maintain concrete temperature at time of placement below 90°F (32°C). Mixing water may be chilled or chopped ice may be used to control temperature provided water equivalent of ice is calculated to total amount of mixing water. Use of liquid nitrogen to cool concrete is Contractor's option.

2. Use water reducing retarding admixture (Type D) when required by high temperatures, low humidity, or other adverse placing conditions.

3.07 CURB AND GUTTER CONSTRUCTION

A. Construct curbs to line and grade shown or established by the Engineer and conform to the details shown on Drawings.

B. Place, process, finish, and cure concrete in conformance with this Section and the applicable requirements of ACI 614. Wherever requirements differ, the more stringent shall govern.

C. Cast in uniform lengths of approximately 10 to 20 feet, except at closures where lengths may not be less than 6 feet.

D. Placement of Preformed Expansion Joints:

1. At intervals not exceeding 40 feet.

2. Beginning and end of curved portions of the curb.

3. Connections to existing curbs and at the perimeter of all structures.

E. Contraction Joints:

1. Place at intervals not exceeding 10 feet when used in conjunction with flexible street pavement.

2. Place to match street paving joints when used in conjunction with portland cement concrete pavement.

3. Open type joint.

4. Provide by inserting thin, oiled steel sheet vertically in fresh concrete to full depth of curb to force coarse aggregate away from joint.

5. After initial set has occurred in the concrete and prior to removing the front curb form, steel sheet shall be removed with a sawing motion.

F. As soon as concrete has set sufficiently to support its own weight, remove the front form and finish all exposed surfaces.

1. Finish top of curb with a steel trowel.

2. Finish edges with a steel edging tool.

3. Rub formed faces with burlap sack or similar device to produce a uniformly textured surface, free from marks, honeycomb, and other defects.

G. Curing:

1. Upon completion of finishing, apply approved curing compound to exposed surfaces of curb.

2. Curing shall continue for a minimum of 5 days.

H. Backfilling Curb: Upon completion of curing period, but not before 7 days has elapsed since pouring the concrete, backfill the curb as specified in Section 02200 “Earthwork”.

I. Adjusting:

1. Finished curb shall present a uniform appearance for both grade and alignment.

2. Remove curb sections showing abrupt changes in alignment or grade or which are more than ¼ inch away from location as staked or which are defective for any reason.

3. Construct new curb at Contractor’s expense.

3.08 SIDEWALK CONSTRUCTION

A. Thickness of sidewalks and ditch paving shall be a minimum of 4 inches or as shown on the Drawings. Concrete shall be placed true to grade to ensure that ponding of water will not occur.

B. Place, process, finish, and cure concrete in conformance with this Section and the applicable requirements of ACI 614. Where the requirements differ, the more stringent shall govern.

C. Placement of Preformed Expansion Joints:

1. Where sidewalk ends.

2. Around posts, poles, or other objects protruding through the sidewalk.

3. At maximum intervals of 50 feet.

D. Contraction Joints:

1. Install transversely to the walks spaced at intervals equal to the sidewalk width.

2. Saw cut weakened plane joints shall be straight and at right angles to the surface of the walk. Saw cuts shall be constructed midway between expansion joints to a depth of 25 percent of slab thickness. All saw cuts shall be performed within 24 hours of placement.

E. Reinforcing:

1. 6” x 6” – W1.4 x W1.4 WWR shall be installed.

F. Finish:

1. Broom surface with fine hair broom at right angles to length of walk and tool at all edges, joints, and markings.

2. All walks are to be scored at no less than intervals equal to walk width and within

24 hours of concrete placement.

3. Where colored concrete is required, finish with steel trowel and lightly sandblast surface.

G. Curing:

1. Upon completion of finishing, apply an approved curing compound to exposed surfaces.

2. Protect sidewalk from damage for period of 7 days.

3.09 PARKING LOT PAVING

A. Remove loose material from compacted subbase surface immediately before placing concrete.

B. Where proposed pavement is to tie into existing pavement, existing pavement shall be evenly saw cut to full depth of existing pavement and existing pavement shall be removed and disposed of to a point that proposed pavement shall be full depth over total area and meet existing grades without bumps or depressions.

C. Proof roll prepared subbase surface to check for unstable areas and need for additional compaction. Do not begin paving work until such subbase deficiencies have been corrected.

D. Subbase and forms shall be checked for line and grade prior to placing concrete. Moisten subbase if required to provide a uniform dampened condition at time concrete is placed. Adjust manholes or other structures to proper elevation and alignment prior to placing concrete.

E. Use bonding agent at locations where fresh concrete is placed against hardened or partially hardened concrete surfaces.

F. Deposit and spread concrete in a continuous operation between transverse joints as far as possible.

G. Joints:

1. When joining existing structures, place transverse joints to align with previously placed joints, unless otherwise indicated, including at curbs and gutters.

2. Construction joints: Install at locations where placement operations are interrupted for more than 30 minutes and at ends of placement, except where placements terminate at expansion joints.

a. Construct joints as shown on the Drawings, or if not shown, use standard metal keyway section forms.

b. Where load transfer-slip dowel devices are used, install so that one end of each dowel bar is free to move.

3. Expansion joints: Provide premolded joint filler for expansion joints abutting concrete curbs, catch basins, manholes, inlets, structures, walks and other fixed objects, unless otherwise indicated.

a. Locate expansion joints at 150 feet o.c. for each pavement lane unless otherwise indicated.

b. Furnish joint fillers in on-piece lengths for full width being placed wherever possible. Where more than one length is required, lace or clip joint filler sections together.

c. Protect top edge of joint filler during concrete placement with a metal cap or other temporary material. Remove protection after concrete has been placed on both sides of joint.

4. Joint fillers and sealants: See Drawing details.

5. Finishing: Broom concrete surface with a steel or fiber broom to produce corrugations between 1/16 and 1/8 inch deep. Broom perpendicular to nearest edge of pavement. Broom all areas of a panel in the same direction.

6. Curing: Apply membrane-forming curing compound to all exposed surfaces at a maximum coverage rate of 200 square feet per gallon. Apply curing compound immediately after final surface texture has been obtained and water sheen has disappeared. Apply curing compound to pavement edges after forms have been removed.

7. Repairs and protections:

a. Repair or replace broken or defective concrete, as directed by Engineer.

b. Drill test cores where directed by Engineer when necessary to determine magnitude of cracks or defective areas. 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. Exclude traffic from pavement for at least 14 days after placement. When construction traffic is permitted, maintain pavement as clean as possible by removing surface stains and spillage of materials as they occur.

3.10 CONCRETE CURING AND PROTECTION

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures.

1. Start initial curing as soon as free water has disappeared from concrete surface after placing and finishing. Weather permitting, keep continuously moist for not less than 7 days.

2. Begin final curing procedures immediately following initial curing and before concrete has dried. Continue final curing for at least 7 days in accordance with ACI

301 procedures. Avoid rapid drying at end of final curing period.

B. Curing Methods: Perform curing of concrete by moist curing, by moisture retaining cover curing, and by combinations thereof.

C. Curing Formed Surfaces: Cure formed concrete surfaces by moist curing with forms in place for full curing period or until forms are removed. If forms are removed, continue curing by methods, as applicable.

D. Curing Unformed Surfaces: Cure unformed surfaces by application of appropriate curing method.

3.11 REMOVAL OF FORMS

A. Formwork not supporting weight of concrete, may be removed after cumulatively curing at not less than 50°F (10°C) for 24 hours after placing concrete, provided concrete is sufficiently hard to not be damage by form removal operations, and provided curing and protection operations are maintained.

B. Formwork supporting weight of concrete, may not be removed in less than 14 days and until concrete has attained design minimum compressive strength at 28 days. Determine potential compressive strength of in place concrete by testing field cured specimens representative of concrete location or members.

3.12 RE USE OF FORMS

A. Clean and repair surfaces of forms to be re used in work. Slit, frayed, delaminated or otherwise damaged form facing material will not be acceptable for exposed surfaces. Apply new form coating compound as specified for new formwork.

B. When forms are extended for successive concrete placement, thoroughly clean surfaces, remove fins and laitance, and tighten forms to close joints. Align and secure joint to avoid offsets.

Do not use "patched" forms for exposed concrete surfaces, except as acceptable to Engineer.

3.13 MISCELLANEOUS CONCRETE ITEMS

A. Filling In: Fill in holes and openings left in concrete structures for passage of work by other trades, unless otherwise shown or directed, after work of other trades is in place. Mix, place and cure concrete, as herein specified, to blend with in place construction. Provide other miscellaneous concrete filling shown or required to complete work.

3.14 CONCRETE SURFACE REPAIRS

A. Patching Defective Areas: Repair and patch defective areas with cement mortar immediately after removal of forms, when acceptable to Engineer.

1. Cut out honeycomb, rock pockets, voids over ¼" in any dimension, and holes left by tie rods and bolts, down to solid concrete but, in no case to a depth of less than

1". Make edges of cuts perpendicular to the concrete surface. Thoroughly clean, dampen with water and brush coat the area to be patched with specified bonding agent. Place patching mortar after bonding compound has dried.

B. Repair of Formed Surfaces: Remove and replace concrete having defective surfaces if defects cannot be repaired to satisfaction of Engineer. Surface defects, as such, include cracks, spalls, honeycomb, rock pockets, fins and other projections on surface. Flush out form tie holes, fill with dry pack mortar, or precast cement cone plugs secured in place with bonding agent.

Repair concealed formed surfaces, where possible, that contain defects that affect the durability of concrete. If defects cannot be repaired, remove and replace concrete.

C. Repair of Unformed Surfaces: Test unformed surfaces, such as monolithic slabs, for smoothness and verify surface plane to tolerances specified for each surface and finish. Correct low and high areas as herein specified. Test unformed surfaces sloped to drain for trueness of slope, in addition to smoothness using a template having required slope.

1. Repair finished unformed surfaces that contain defects which affect durability of concrete. Surface defects, as such, include crazing, cracks in excess of 0.01" wide or which penetrate to reinforcement or completely through non reinforced sections regardless of width, spalling, pop outs, honeycomb, rock pockets and other objectionable conditions.

2. Correct low areas in unformed surfaces during, or immediately after completion of surface finishing operations by cutting out low areas and replacing with fresh concrete. Finish repaired areas to blend into adjacent concrete. Proprietary patching compounds may be used when acceptable to Engineer.

3. Repair defective areas, except random cracks and single holes not exceeding 1" diameter, by cutting out and replacing with fresh concrete. Remove defective areas to sound concrete with clean, square cuts and expose reinforcing steel with at least

¾" clearance all around. Dampen concrete surfaces in contact with patching concrete and apply bonding compound. Mix patching concrete of same materials to provide concrete of same type or class as original concrete. Place, compact and finish to blend with adjacent finished concrete. Cure in same manner as adjacent concrete.

D. Repair methods subject to acceptance of Engineer.

3.15 QUALITY CONTROL TESTING DURING CONSTRUCTION

A. The Contractor shall employ a testing laboratory to perform tests and to submit test reports. The Owner may at any time during construction require the Contractor to furnish test cylinders. Contractor shall furnish sets of three (3) standard concrete cylinders for testing.

B. Sampling and testing for quality control during placement of concrete may include the following, as directed by Engineer.

1. Sampling Fresh Concrete: ASTM C 172, except modified for slump to comply with ASTM C 94.

a. Slump: ASTM C 143; one test at point of discharge for each day's pour of each type of concrete; additional tests when concrete consistency seems to have changed.

b. Air Content: ASTM C 173, volumetric method for lightweight or normal weight concrete; ASTM C 231 pressure method for normal weight concrete;

one for each day's pour of each type of air entrained concrete.

c. Concrete Temperature: Test hourly when air temperature is 40°F (4°C) and below, and when 80°F (27°C) and above; and each time a set of compression test specimens are made.

d. Compressive Strength Tests: ASTM C 39; one set for each day's pour exceeding 5 cu. yds. plus additional sets for each 50 cu. yds. over and above the first 25 cu. yds. of each concrete class placed in any one day; one specimen tested at 7 days, one specimen tested at 28 days, and one specimen retained in reserve for later testing if required.

Strength level of concrete will be considered satisfactory if averages of sets of three consecutive strength test results equal or exceed specified compressive strength, and no individual strength test result falls below specified compressive by more than 500 psi.

C. Test results will be reported in writing to Engineer, Owner and Contractor within 24 hours that tests are made. Reports of compressive strength tests shall contain the project identification name and number, date of concrete placement, name of concrete testing service, concrete type and class, location of concrete batch in structure, design compressive strength at 28 days, concrete mix proportions and materials; compressive breaking strength and type of break for both 7 day tests and 28 day tests.

D. Additional Tests: The testing service will make additional tests of in place concrete when test results indicate specified concrete strengths and other characteristics have not been attained in the structure, as directed by Engineer. Testing service may conduct tests to determine adequacy of concrete by cored cylinders complying with ASTM C 42, or by other methods as directed.

E. Contractor shall pay for such tests conducted, and any other additional testing as may be required, when unacceptable concrete is verified.

EROSION CONTROL

Description. Item covers all erosion control measures identified in the plans not already covered by separate pay items. Contractor is responsible for maintaining site and providing sufficient

BMP’s in accordance with NPDES general permit #ARR150000 including, but not limited to, ditch checks, inlet protection, silt fence, concrete washouts, construction entrance/exit, sediment removal, temporary sanitary facilities, etc.

Construction Requirements. This work shall be completed as required by the contract documents and subject to the Owner’s approval. The contractor shall prepare an erosion control site plan showing the location of all expected BMP’s before work begins. During the course of the project the plan is to be updated with the date areas are disturbed and stabilized; method of stabilization; date BMP’s are installed, maintained, and removed; any noted changes to the plan;

etc. At the end of the project the contractor will submit the as built erosion control site plan to the

Owner.

Method of Measurement. Erosion Control will be measured as a complete unit.

Basis of Payment. The contract unit price shall be full compensation for furnishing erosion control site plan; for furnishing all materials; for site preparation; for acceptable maintenance of the completed items; for subsequent removal of the items when applicable; for permanent stabilization of the areas disturbed by the removal of these items, and for all labor, equipment, tools, and incidentals necessary to complete the work.

Erosion Control Lump Sum

FOG SEAL

Description: This work shall consist of the application of a water-based asphalt emulsion product used primarily as a fog seal by means of a bituminous distributor.

Materials: The material shall be emulsified asphalt for use in a fog seal…