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SOLICITATION

DOCUMENT

American Consulate General Jeddah, Saudi Arabia Contracting and Procurement Office

CONSTRUCTION OF SIDEWALKS

Solicitation No. 19SA4026R0010

American Consulate General, Jeddah PO Box 149

Jeddah 21411 Saudi Arabia

Construction of Sidewalks Solicitation 19SA4026R0010

SECTION B - SERVICES AND PRICES/COSTS

B.1 SCOPE OF SERVICES

The Contractor shall provide personnel, materials and equipment for construction of sidewalks at the U.S.

Consulate General Compound at Mohammedia District in Jeddah, Saudi Arabia, as described in Section C, of this contract and exhibits attached in Section J.

B.2 TYPE OF CONTRACT

This contract is a firm fixed price contract payable in the currency indicated in the SF-1442. No additional sums will be payable on account of any escalation in the cost of materials, equipment or labor, or because of the Contractor's failure to properly estimate or accurately predict the cost or difficulty of achieving the results required by this contract. Nor will the contract price be adjusted on account of fluctuations in the currency exchange rates. Changes in the contract price or time to complete will be made only due to changes made by the Government in the work to be performed, or by delays caused by the Government.

B.3 PRICES/COSTS

The Contractor shall complete all work, including furnishing all labor, material, equipment and services required under this contract for the following firm fixed price. This price shall include all direct costs (labor, materials), indirect costs, overhead (including cost of Workers’ Compensation and War-Hazard Insurance, which shall not be a direct reimbursement), and profit.

B.3.1 VALUE ADDED TAX

Value Added Tax (VAT) is not included in the CLIN rates. Instead, it will be priced as a separate Line Item in the contract and on Invoices. Local law dictates the portion of the contract price that is subject to VAT. The full VAT amount is charged on all aspects of the contract and should be provided in a separate line item with a firm fixed priced amount.

B.3.2 PRICES

CLIN SERVICE

QTY

UNIT

UNIT

PRICE

TOTAL

PRICE

Construction of New Sidewalk NOB building. As per the detailed BOQ stated in DIV 5 and the provided Engineering Design

1 Lumpsum

Construction of New Sidewalk SDA building. As per the detailed BOQ stated in DIV 5 and the provided Engineering Design

1 Lumpsum

Construction of New Sidewalk UTL building. As per the detailed BOQ stated in DIV 5 and the provided Engineering Design

1 Lumpsum

Construction of New Sidewalk LES Parking. As per the detailed BOQ stated in DIV 5 and the provided Engineering Design

1 Lumpsum

Total

VAT

G. Total

SECTION C - DESCRIPTION/SPECIFICATIONS/WORK STATEMENT

DIVISION 1 – GENERAL REQUIREMENTS

1.1 GENERAL statement of work: The U.S. Consulate General in Jeddah seeks a qualified contractor to construct sidewalks at four separate locations. The scope of work includes, but is not limited to:

1.1.0 Excavation for the sidewalks

1.1.1. Formwork and rebar/dowels

1.1.2 Sub-base and compaction.

1.1.3. Cement Concrete Sidewalk.

1.1.4. Interlock pavers (for LES parking only)

1.2. Contractor’s quality control

1.2.0. The Contractor is responsible for quality and shall establish and maintain an effective quality control system. The contractor shall define the QC responsible person who is qualified to develop the quality control plan, perform frequent quality control inspections.

1.2.1 The Contractor shall submit the Quality Control Plan (QCP) to the Contracting Officer Representative (COR) within seven (7) calendar days after Contract Award.

1.2.2. The Contractor shall submit a Quality Control Report (QCR) to the Contracting Officer Representative (COR) daily. Reporting shall begin on the first day the contractor’s forces arrive on site and shall continue until the contractor’s forces have completely demobilized. Daily reports shall be submitted by 08:00am the following morning and shall include, at a minimum, the information discussed in this section. the report format shall be accepted by the COR prior to use.

1.2.3. The Quality Control Report (QCR) shall include the following as minimum:

a. Project title and project number.

b. Date of inspection

c. A procedure for inspection of work and materials.

d. A corrective action procedure for identifying and controlling site deficiencies from identification through corrective action and acceptance.

1.2.4. Daily inspections shall be carried out to ensure that control activities are providing continued compliance with contract requirements until completion of the feature of work.

Final inspections shall be conducted, and all deficiencies corrected prior to starting additional features of work which may be affected by the deficient work. The Contractor shall not build upon nor conceal deficient work.

1.2.5. Completion Inspection:

a. Punch-List Inspection: At completion of all work or any increment thereof, the contractor shall conduct joint inspections of the work with the government. The contractor shall record all deficiencies and work identified as not conforming to the plans and specifications, and a list of findings, by location, shall be submitted to the COR within two days after each joint inspection. The list of these findings shall constitute the punch-list. At completion of all punch-list work or any increment thereof, the contractor shall conduct a joint re-inspection with the COR to verify completion of the punch-list work. Both the contractor and the COR shall confirm mutual agreement of completion by signing the punch-list and indicating that each item on the punch-list is complete. The contractor shall submit two hardcopies of the signed punch-lit and electronic copy of the signed list in .pdf format.

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b. Final Acceptance Inspection: No later than one (1) week after substantial completion the contractor shall conduct the joint, final acceptance inspection with the COR. The contractor shall provide a minimum of 7-days advance written notice to the COR and certify the work shall be complete prior to commencing the final acceptance inspection.

During the joint, final acceptance inspection the contractor shall record all deficiencies and all work identified as not conforming to the plans and specifications. A list of the findings shall be submitted to the COR within two days after the inspection. the list of these contractor findings shall constitute the list of final acceptance defects. The contractor shall immediately complete all work on the list of final acceptance defects. At completion of all items on the list of final acceptance defects, the contractor shall conduct a joint re-inspection with the COR to verify completion. Both the contractor and COR shall confirm mutual agreement of completion by signing the list of final acceptance defects indicating that each item on the defects is complete. The contractor shall submit two hardcopies of the signed defects and electronic copy of the signed list in .pdf format.

1.2.6. Daily Reporting: The Contractor shall provide CQC Daily Reports that provide factual evidence that required quality control activities and/or tests have been performed. These records shall include the work of subcontractors and suppliers and shall be in acceptable form that includes, as a minimum, the following information:

A. Contractor/subcontractor and their area of responsibility.

b. Work performed each day, giving location, description, and by whom performed.

c. List deficiencies noted along with corrective action.

d. Quantity of materials received at the site with statement as to acceptability, storage.

1.3. Safety and occupational health

1.3.1. Summary: The purpose of this document is to ensure compliance with current safety regulations as well as the health and safety of personnel avoiding any damage or injury. The contractor will accept all legal requirements or regulations currently enforced that concern safety for staff and workers, as well as for the public who directly or indirectly may be affected by the work.

The latest edition of the U.S. Army Corps of Engineers Safety and Health Requirements Manual EM 385-1-1 will be used as the source of minimum standards for the safety and health program at post. Contractors are expected to develop hazard controls methods in accordance with EM 385-1-1, and comply with the requirements in this manual through the duration of the project.

(http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385 -1-1.pdf).

1.3.2. The contractor must submit an Accident Prevention Plan specifically for the activity, immediately after the site survey.

1.3.3. The contractor must submit a Risk Assessment/Activity Hazard Analysis (AHA) specifically for the activity, immediately after the site survey.

1.3.4. The contractor must demonstrate understanding of his/her responsibilities related to the safety requirements by addressing hazards in preplanning processes and meetings.

1.3.5. The contractor is expected to provide a “competent person” to implement Site health and safety plan and to oversee its compliance. A competent person is an individual who, by way of training and/or experience, is knowledgeable of applicable standards, is capable of identifying workplace hazards relating to the specific operation, is designated by the employer, and has authority to take appropriate actions.

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Construction of Sidewalks Solicitation 19SA4026R0010 http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385-1-1.pdf http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385-1-1.pdf

1.3.6. The contractor will conduct a safety briefing and ensure individuals working at the site are aware of potential hazards before starting daily work.

1.3.7. The contractor shall ensure that individuals working at the site are provided with proper safety equipment to prevent accidental injury in accordance with the requirements of the contract.

1.3.8. The contractor must ensure that all their workers are trained and certified to perform the job activity.

1.3.9. The contractor must submit all training records and certificates of their workers related to the project before commencement.

1.3.10. The contractor must submit all equipment and operator certificates that is related to the project before commencement.

1.3.11. The contractor must accept the safety standards set by the US Embassy, EM-385-1-1.

1.3.12. Smoking is prohibited at the work site and will be used only in designated area for smokers.

1.3.13. The contractor will report accidents to the COR who will pass the data to the POSHO or

Safety Coordinator.

1.3.14. The COR will work directly with the contractor ensuring all Safety Requirements are met as described in this document and in case it is needed the COR will report to the POSHO or Safety Coordinator any safety deficiency found before or during the execution of the project.

In case the COR identifies unsafe acts or conditions that could affect significantly the health or safety of Consulate personnel, contractors, subcontractors, third parties or government property, the work can be stopped by the COR until the condition is fixed. If different work conditions appear during the project, the COR can indicate further safety requirements to the contractor.

The COR may share safety related information with the POSHO and Safety Coordinator to guarantee personnel safety and government property conservation.

1.4. Waste Management: The intent of this Specification is to instruct the contractor to divert non-hazardous construction and demolition debris from disposal in landfills and incineration facilities, and to redirect recyclable and/or recoverable resources back to the manufacturing process and reusable materials to appropriate locations.

1.4.1. Waste Management Plan: The Contractor shall submit an Integrated Waste Management

Plan for non-hazardous waste and a sample of the Waste Removal Form(s) to document the method for reducing impact on the environment.

1.4.2. Waste Handling:

a. Designate a specific location on site to facilitate separation of materials for potential reuse, salvage, recycling, and charity donations.

b. Provide appropriate containers for the construction materials. Keep waste bins and pile areas neat and clean. Clearly mark bins for each category of waste. Do not commingle non-recyclable waste with materials designated for reuse or recycling.

c. Transport material in accordance with local rules and regulations

DIVISION2 – TECHNICAL SCOPE OF CONSTRUCTING NEW SIDEWALKS

2.1. Earthwork:

2.1.1. Preparing subgrade for sidewalks:

Definitions:

A. Backfill: soil material or controlled low-strength material used to fill an excavation.

B. Base Coarse: Coarse placed between the subbase course and cast-in-concrete.

C. Borrow soil: satisfactory soil imported from off-site for use as fill or backfill.

D. Drainage Coarse: Coarse supporting the slab-on-grade upward capillary.

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E. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated.

1. Authorized Additional Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions as directed by the COR. Authorized additional excavation and replacement material will be paid for according to the Contract provisions for unit prices and changes in the work.

2. Bulk Excavation: Excavation is more than 3 meters in width and more than 9 meters in length.

3. Unauthorized Excavations: Excavation below subgrade or beyond indicated lines and dimensions without direction by the COR. Unauthorized Excavation, as well as remedial work direct by the COR, shall be without additional compensation.

F. Fill: Soil materials used to raise existing grades.

G. Subgrade: Surface or elevation remaining after completing excavation, or top surface of a fill or backfill immediately below subbase, drainage fill, or topsoil materials.

H. Utilities: On-site underground pipes, conduits, ducts, and cables, as well as underground services within buildings.

I. Bedding Coarse: Course placed over the excavated subgrade in a trench before laying pipe.

2.1.2. Products:

A. Satisfactory Soil: ASTM D 2487 soil classification. Third party qualified testing agency is required.

B. Subbase material: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940 or equivalent; with at least 90 percent passing a 37.5mm sieve and not more than 12 percent passing a 0.075mm.

C. Base course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940 or equivalent; with at least 95 percent passing a 37.5mm sieve and not more than 8 percent passing a 0.075mm.

D. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940 or equivalent; with at least 90 percent passing a 37.5mm sieve and not more than 12 percent passing 0.075mm.

E. Bedding course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940 or equivalent; with at least 100 percent passing a 25 mm sieve and not more than 8 percent passing a 0.075mm.

F. Drainage Course: Narrowly graded mixture of washed crushed stone or crushed or uncrushed gravel; ASTM D 448 or equivalent; coarse-aggregate grading size 57 approximately 20mm in size; with 100 percent passing a 37.5mm sieve and 0 to 5 percent passing a 2.36 (No. 8) sieve.

G. Sand: ASTM C33 or equivalent; fine aggregate, natural, or manufactured sand.

2.1.3. Preparation:

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earthwork operations.

B. Preparation of subgrade for earthwork operations including removal of vegetation, topsoil, debris, obstruction, and deleterious materials from ground surface.

2.1.4. Excavation: Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Excavated materials may include soil, gravel, obstruction, and plants. No changes in the contract sum or the contract time will be authorized for rock

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excavation or removal of the materials. Excavate Surfaces under sidewalks to indicated line, cross sections, elevations, and subgrade.

2.1.4.1. Subgrade Inspection: Notify the COR when excavation has reached required subgrade.

Compact the exposed surface using 10 overlapping passes using a non-vibratory roller with a minimum weight of 10 tons (or equivalent) to obtain improved subgrade.

2.1.4.2 Backfill: Place and compact backfill in excavations promptly, but not before completing the following:

scarify and recompact top 150 mm below fill subgrade and compact each layer of backfill or fill soil material to 92 percent or greater.

Places backfill and fill soil materials in layers not more than 300 mm in loose depth for material compacted by heavy compaction equipment. Loose depths of 100 to 150 mm should be used for material compacted by hand-operated tampers.

Places backfill and fill soil materials evenly on all sides of structures to required elevations, and uniformly along the full length of each structure.

2.1.4.3. Grading: Uniformly grade areas to a smooth surface, free of irregular surface changes.

Comply with compaction requirements and grade to cross sections, lines, and elevations indicated.

a. Provide smooth transition between adjacent existing grades and new grades.

b. cut out soft spots, fill low spots, and trim high spots to comply with required surface tolerances.

c. Slope grades to direct water away from buildings and to prevent ponding. Finish subgrades to required elevations within 25mm.

2.1.4.4. Subbase and Base courses:

a. Place subbase and base course on approved subgrades free of mud, loose soil, deleterious materials, etc.

b. On prepared subgrade, place subbase and base course under sidewalks as follow:

1. Place base course material over subbase course under concrete.

2. shape subbase and base course to required crown elevations and cross-slope grades.

3. Place subbase and base course 150 mm or less in compacted thickness in a single layer.

4. Place subbase and base course that exceeds 150 mm in compacted thickness in layers of equal thickness, with no compacted layer more than 150 mm thick or less than 75 mm thick.

5. Compact subbase and base course at optimum moisture content to required grades, lines, cross sections, and thickness to not less than 92 percent of maximum dry unit weight according to ASTM D 1557.

2.1.4.5 Protection

A. Protecting Graded Areas: Protect newly graded areas from traffic, and erosion. Keep free of trash and debris.

B. Repair and reestablish grades to specified tolerances were completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions.

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1. certify or remove and replace soil material to depth as directed by the Project Director; reshape and recompact.

2. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing.

3. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to greatest extent possible.

2.1.4.6. Disposal of Surplus and waste Material:

A. Disposal: Remove surplus satisfactory soil and rock and waste material, including unsatisfactory soil and rock, trash, and debris, and legally dispose of it off the Government's property as directed by the

COR.

B. Disposal: Transport surplus satisfactory soil to designated storage areas on the Government's property. Stockpile or spread soil as directed by the Project Director.

2.2. Cast-In-Place Concrete

Section includes cast-in-place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes for the sidewalks

2.2.1. Definitions

A. Cementitious Materials: Portland cement alone or in combination with one of blended hydraulic cement, fly ash and other pozzolans, ground granulated blast-furnace slag, or silica fume; subject to compliance with requirements.

2.2.2. Submittals:

A. Product Data: For each type of manufactured material and product indicated.

B. Design Mixture: For each concrete mixture. Submit alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments. Use form in Attachment A to this Section

1. Submit written reports to Project Director/COR of each proposed mix prepared and sealed by professional engineer for each class of concrete at least 15 days prior to start of Work. Do not begin concrete production until Project Director/COR has approved proposed mix designs.

2. Indicate amounts of mixing water to be withheld for later addition at Project site.

C. Steel Reinforcement Shop Drawings: Certified Mill Test Reports: Submit Certified Mill Test Reports for each heat representing all reinforcing steel supplied to the project.

D. Placing drawings that detail fabrication, bending, and placement. Include bar sizes, lengths, material, grade, bar schedules, stirrup spacing, bent bar diagrams, bar arrangement, splices and laps, mechanical connections, tie spacing, hoop spacing, and support for concrete reinforcement

E. Formwork Shop Drawings: Prepared, signed and sealed by a professional engineer indicating fabrication and erection of forms of specific finished concrete surfaces. Show form

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construction including jointing, special form joints or reveals, location and pattern of form tie placement, and other items that affect exposed concrete visually. Show locations and detail construction joints for concrete work.

1. Shoring and Reshoring: Indicate proposed schedule and sequence of stripping formwork, shoring removal, and installing and removing reshoring.

2. Review is for general applications and features only. Designing formwork and shoring sequence for structural stability and efficiency is Contractor’s responsibility.

F. Material Certificates: Signed by manufacturers certifying that each of the following items complies with requirements, including where applicable, compatibility with other subsequent materials and finishes:

1. Cementitious materials and aggregates.

2. Form materials and form-release agents.

3. Steel reinforcement indicating physical and chemical analysis

4. Reinforcement accessories.

5. Fiber reinforcement.

6. Admixtures.

7. Water stops.

8. Curing and sealing materials.

9. Floor and slab treatments.

10. Bonding agents.

11. Adhesives.

12. Vapor barriers.

13. Epoxy joint filler.

14. Joint-filler strips.

15. Repair materials.

16. Other proprietary items.

2.2.3. Quality Assurance

A. Installer Qualifications: Experienced installer who has completed concrete Work similar in material, design, and extent to that indicated for this Project, and whose work has resulted in construction with record of successful in-service performance. As an example, installer who employs personnel on Project qualified as ACI-certified Flatwork Technician and Finisher and supervisor who is ACI-certified Concrete Flatwork Technician, or installer certified by ACI International Partner Associations as identified in Attachment D to this Section, is considered qualified.

B. Ready-Mix Concrete Manufacturer Qualifications: Firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C 94/C 94M requirements for production facilities and equipment.

1. Manufacturers certified according to NRMCA's "Certification of Ready Mixed Concrete Production Facilities" or similar certification program is demonstration of qualification.

C. Concrete Batch Plant Requirements: A site concrete batch plant that complies with ASTM C 94/C 94M requirements for production facilities and equipment.

D. Professional Engineer Qualifications: Professional engineer who is experienced in providing engineering services of kind indicated. Engineering services are defined as those performed for formwork and shoring/ reshoring installations similar to those indicated for this Project in material, design, and extent.

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E. Testing Agency Qualifications: Independent agency, acceptable to Project Director/COR, qualified according to ASTM C 1077 and ASTM E 329 for testing indicated.

1. Personnel conducting field tests shall be qualified as demonstrated by experience and appropriate certification such as ACI Concrete Field-Testing Technician, Grade 1, according to ACI CP-1 or equivalent certification program. Refer to Attachment D to this Section for listing of ACI International Partner Associations for equivalent international certification programs.

2. Personnel performing laboratory tests shall be qualified as demonstrated by experience and appropriate certification such as ACI-certified Concrete Strength Testing Technician and Concrete Laboratory Testing Technician - Grade I or equivalent certification program. Testing Agency laboratory supervisor shall be qualified as demonstrated by experience and appropriate certification such as ACI-certified Concrete Laboratory Testing Technician - Grade II. Refer to Attachment D to this Section for listing of ACI International Partner Associations for equivalent international certification programs.

F. Cementitious Material Source Limitations: Obtain each type or class of cementitious material of the same brand from the same manufacturer's plant, obtain aggregate from single source, and obtain admixtures from single source from single manufacturer.

G. Reinforcing Steel Mill Qualifications: Reinforcing bars shall be manufactured by OBO prequalified manufacturer listed in Attachment B to this Section, or by manufacturer approved by OBO based upon variance process identified in Section 1903 of the OBO Building Code.

H. Welding Qualifications: Qualify procedures and personnel according to AWS D1.4/D 1.4M, "Structural Welding Code - Reinforcing Steel."

I. ACI Publications: Comply with the following codes and standards unless modified by requirements in the Contract Documents:

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

2. ACI 117, "Specifications for Tolerances for Concrete Construction and Materials."

3. ACI 211.1, “Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass

Concrete.”

4. ACI 303.1, “Standard Specification for Cast-in-Place Architectural Concrete.”

5. ACI 304R, “Guide for Measuring, Mixing, Transporting, and Placing Concrete.”

6. ACI 305.1, “Specification for Hot Weather Concreting.”

7. ACI 306.1, “Standard Specification for Cold Weather Concreting.”

8. ACI 308.1, “Standard Specification for Curing Concrete.”

9. ACI 309R, “Guide for Consolidation of Concrete.”

10. ACI 318M, “Building Code Requirements for Structural Concrete.”

11. ACI 347, “Guide to Formwork for Concrete.”

12. ACI 336.1, “Specification for Construction of Drilled Piers.”

13. ACI 350, “Code Requirements for Environmental Engineering Concrete Structures.”

J. CRSI Publication: Comply with Concrete Reinforcing Steel Institute (CRSI) “Manual of Standard Practice, except where more stringent requirements are indicated or specified.

K. Concrete Testing Service: Engage qualified independent testing agency to perform material evaluation tests and to design concrete mixtures. Approved OBO independent testing labs are those labs accredited by International Accreditation Services, Inc. (IAS), or inspected by Cement and Concrete Reference Laboratory (CCRL), or labs at OBO prequalified reinforcing steel mills, or labs at approved State Department of Transportation labs. See Attachment C to this Section.

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L. Mockups: Cast concrete slab-on-grade [and formed-surface] panels to demonstrate typical joints, surface finish, texture, tolerances, floor treatments, and standard of workmanship.

M. Welding Qualifications: Qualify procedures and personnel according to AWS D1.4/D 1.4M, "Structural Welding Code - Reinforcing Steel."

N. ACI Publications: Comply with the following codes and standards unless modified by requirements in the Contract Documents:

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

2. ACI 117, "Specifications for Tolerances for Concrete Construction and Materials."

3. ACI 211.1, “Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass

Concrete.”

4. ACI 303.1, “Standard Specification for Cast-in-Place Architectural Concrete.”

5. ACI 304R, “Guide for Measuring, Mixing, Transporting, and Placing Concrete.”

6. ACI 305.1, “Specification for Hot Weather Concreting.”

7. ACI 306.1, “Standard Specification for Cold Weather Concreting.”

8. ACI 308.1, “Standard Specification for Curing Concrete.”

9. ACI 309R, “Guide for Consolidation of Concrete.”

10. ACI 318M, “Building Code Requirements for Structural Concrete.”

11. ACI 347, “Guide to Formwork for Concrete.”

12. ACI 336.1, “Specification for Construction of Drilled Piers.”

13. ACI 350, “Code Requirements for Environmental Engineering Concrete Structures.”

O. CRSI Publication: Comply with Concrete Reinforcing Steel Institute (CRSI) “Manual of Standard Practice, except where more stringent requirements are indicated or specified.

P. Concrete Testing Service: Engage qualified independent testing agency to perform material evaluation tests and to design concrete mixtures. Approved OBO independent testing labs are those labs accredited by International Accreditation Services, Inc. (IAS), or inspected by Cement and Concrete Reference Laboratory (CCRL), or labs at OBO pre-qualified reinforcing steel mills, or labs at approved State Department of Transportation labs. See Attachment C to this Section.

Q. Mockups: Cast concrete slab-on-grade [and formed-surface] panels to demonstrate typical joints, surface finish, texture, tolerances, floor treatments, and standard of workmanship.

2.2.4. DELIVERY, STORAGE, AND HANDLING

A. Store cement, aggregate, admixture, water, embedded items and reinforcing them in a manner to prevent deterioration or intrusion of any foreign matter. Do not use damaged or deteriorated materials.

B. Deliver, store, and handle steel reinforcement to prevent bending and damage.

1. Avoid damaging coatings on steel reinforcement.

2. Repair damaged epoxy coatings on steel reinforcement according to ASTM D 3963/D 3963M.

2.2.4.1 Form Materials

A. Forms for Exposed Finish Concrete: Plywood, metal-framed plywood faced, or other acceptable panel-type materials to provide continuous, straight, smooth, exposed surfaces.

Furnish in largest practicable sizes to minimize number of joints or as shown on drawings.

B. Forms for Unexposed Finish Concrete: Plywood, lumber, metal, or another acceptable material. Provide lumber dressed on at least two edges and one side for tight fit.

C. Chamfer Strips: Wood, metal, PVC or rubber strips, 20 mm by 20 mm.

D. Form Release Agent: Provide commercially formulated form release agent with a maximum of 450 mg/l volatile organic compounds (VOCs) that will not bond with, stain, or adversely affect concrete surfaces and will not impair subsequent treatments of concrete surfaces.

E. Form Ties: Factory-fabricated, adjustable-length, removable or snap-off metal form ties designed to prevent form deflection and to prevent spalling of concrete upon removal.

Provide units that will leave no metal closer than 40 mm to the plane of the exposed concrete surface.

1. Provide ties that, when removed, will leave holes not larger than 25 mm in diameter in the concrete surface.

2.2.4.2. STEEL REINFORCEMENT: 10mm coated steels rebars.

2.2.4.3. Concrete Materials:

A. Portland Cement: ASTM C 150, Type I or Type I / II for above grade concrete; Type V for below grade concrete.

1. At Contractor’s option may use Type III for above grade concrete.

2. Use one brand of cement throughout Project unless otherwise acceptable to COR.

B. Fly Ash: ASTM C 618, Class F.

C. Ground Granulated Blast-Furnace Slag (GGBF): ASTM C 989, Grade 100 or 120.

D. Silica Fume: ASTM C 1240.

E. Normal-Weight Aggregate: ASTM C 33, uniformly graded, and as follows:

1. Coarse aggregate size for concrete in walls, columns, beams, and structural slabs shall not exceed 20 mm.

2. Coarse Aggregates: (a) General Use: 25 mm to 4.75 mm; (b) Walls, Columns, Beams, and Structural Slabs: 20 mm to 4.75 mm; (c) Tight Placement: 12.5 mm to 4.75 mm.

3. Fine Aggregates: Fineness modulus shall not be less than 2.3 nor more than 3.1.

4. Combined Aggregate Gradation: Well graded from coarsest to finest with not more than 18 percent and not less than 8 percent retained on an individual sieve, except that less than 8 percent may be retained on coarsest sieve, on the No. 50 (0.300 mm) sieve, and the No. 100 (0.150 mm) sieve.

5. Materials that contain particles that will discolor the surface shall not be used for any exposed concrete.

6. Provide aggregates from a single source for exposed concrete.

7. Do not use aggregates containing chloride ions in excess to the requirements of ACI for concrete construction in corrosive environments.

F. Water: Potable and/or Non-Potable complying with ASTM C 94.

2.2.4.4. Admixtures:

A. A. Air-Entraining Admixture: ASTM C 260.

B. Chemical Admixtures: Provide admixtures certified by manufacturer to be compatible with other admixtures and that will not contribute water-soluble chloride ions exceeding those permitted in hardened concrete. Do not use calcium chloride or admixtures containing calcium chloride.

1. Water-Reducing Admixture: ASTM C 494/C 494M, Type A.

2. Retarding Admixture: ASTM C 494/C 494M, Type B.

3. Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type D.

4. High-Range, Water-Reducing Admixture: ASTM C 494/C 494M, Type F.

5. High-Range, Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type G.

6. Plasticizing and Retarding Admixture: ASTM C 1017/C 1017M, Type II.

C. Set-Accelerating Corrosion-Inhibiting Admixture: Commercially formulated, anodic inhibitor or mixed cathodic and anodic inhibitor; capable of forming a protective barrier and minimizing chloride reactions with steel reinforcement in concrete and complying with ASTM C 494/C 494M, Type C.

1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. Axim Italcementi Group, Inc.; CATEXOL CN-CI.

b. BASF Construction Chemicals - Building Systems; Rheocrete CNI.

c. Euclid Chemical Company (The), an RPM company; [ARRMATECT] [EUCON BCN]

[EUCON CIA].

d. Grace Construction Products, W. R. Grace & Co.; DCI.

e. Sika Corporation; Sika CNI.

D. Non-Set-Accelerating Corrosion-Inhibiting Admixture: Commercially formulated, non-set-accelerating, anodic inhibitor or mixed cathodic and anodic inhibitor; capable of forming a protective barrier and minimizing chloride reactions with steel reinforcement in concrete.

2. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. BASF Construction Chemicals - Building Systems; Rheocrete 222+.

b. Cortec Corporation; MCI- [2000] [2005NS].

c. Grace Construction Products, W. R. Grace & Co.; DCI-S.

d. Sika Corporation; FerroGard 901.

2.2.4.5. Water stops:

A. Flexible Rubber Waterstops: CE CRD-C 513, for embedding in concrete to prevent passage of fluids through joints. Factories fabricate corners, intersections, and directional changes.

1. Profile: Flat, dumbbell with center bulb.

2. Dimensions: 150mm by 10mm thick.

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B. Flexible PVC Waterstops: CE CRD-C 572, for embedding in concrete to prevent passage of fluids through joints. Factories fabricate corners, intersections, and directional changes.

1. Profile: Flat, dumbbell with center bulb.

2. Dimensions: 150mm by 10mm thick.

C. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Rubber Waterstops:

a. Greenstreak.

b. Progress Unlimited Inc.

c. Westec Barrier Technologies; Div. of Western Textile Products, Inc.

2. PVC Waterstops:

a. Greenstreak.

b. Meadows: W. R. Meadows, Inc.

c. Murphy: Paul Murphy Plastics Co.

d. Progress Unlimited Inc.

e. Vinylex Corporation.

f. Sika Corporation.

D. Self-Expanding Strip Waterstops: Manufactured rectangular or trapezoidal strip, sodium bentonite or other hydrophylic material for adhesive bonding to concrete.

1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, the following:

a. Volclay Waterstop-RX; Colloid Environmental Technologies Co.

b. Conseal CS-231; Concrete Sealants Inc.

c. Swellseal Joint; De Neef Construction Chemicals (U.S.) Inc.

d. Superseal; Tremco Incorporated.

e. Hydrotite; Greenstreak.

2.2.4.6. Concrete Mixes:

A. Prepare design mixes for each type and strength of concrete determined by laboratory trial batch method as specified ACI 211.1, ACI 301 and ACI 318M. Use an independent testing agency acceptable to the Project Director and Quality Control Manager for preparing and reporting proposed mix designs. Do not use the same testing agency for field quality control testing.

B. Submit written reports to the Project Director of each proposed mix prepared and sealed by a professional engineer for each class of concrete at least 15 days prior to start of Work. Do not begin concrete production until the Project Director has approved proposed mix designs.

C. Cementitious Materials: Limit percentage, by weight, of cementitious materials other than portland cement in concrete as follows:

1. Limit use of fly ash and ground granulated blast furnace (GGBF) slag to not exceed 20 percent of cementitious content by weight.

2. Limit use of silica fume to not exceed 10 percent of cementitious content by weight.

D. Design mixes to provide normal weight concrete with properties as indicated herein and on the Structural Drawings.

1. Perimeter Walls: Proportion normal-weight concrete mix as follows:

a. Compressive Strength (28 Days): 25 MPa minimum.

b. Maximum Slump: 125 mm

2. Slab on Grade, Suspended Slabs, and Building Frame Members: Proportion normal-weight concrete mix as follows:

a. Compressive Strength (28 Days): 30 MPa minimum.

b. Maximum Slump: 125 mm.

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c. Maximum Slump for Concrete Containing High-Range, Water-Reducing Admixture: 200 mm after Admixture is added to concrete with 50 mm to 75 mm slump.

3. Mud Slabs:

a. Compressive Strength (28) days: 20 MPa minimum

b. Maximum Slump: 125 mm

E. Water-Cementitious Materials Ratio: Provide concrete for following conditions with maximum water-cementitious materials (W/C) ratios as follows:

1. Unless noted otherwise: Maximum W/C = 0.50.

2. Maximum Water-Cementitious Materials Ratio: 0.45 for concrete subject moderate sulfate exposure or required to have low water permeability or subject to freeze and thawing while moist.

3. Maximum Water-Cementitious Materials Ratio: 0.40 for concrete subject to severe or very severe sulfate exposure or for corrosion protection of steel reinforcement in concrete exposed to chlorides from deicing chemicals, salt, saltwater, brackish water, seawater, or spray from these sources.

G. Minimum Cementitious Content: For concrete subject sulfate exposure (per ACI 318M

Table 4.3.1) including foundations protected with two layers of bituminous dampproofing:

1. Moderate Sulfate Exposure: 334 kg/m3 minimum cementitious content.

2. Severe Sulfate Exposure: 362 kg/m3 minimum cementitious content.

3. Very Severe Sulfate Exposure: 390 kg/m3 minimum cementitious content.

G. Limit water-soluble, chloride ion content in hardened concrete to 0.15 percent by weight of cement.

H. Admixtures: Use admixtures according to manufacturer’s written instructions.

1. Use water-reducing admixture or high-range water-reducing admixture (superplasticizer) in concrete, as required, for placement and workability.

2. Use water-reducing and retarding admixtures when required by high temperatures, low humidity, or other adverse placement conditions.

3. Use high range water-reducing admixture in pumped concrete as required for pumpability and workability and concrete required to be watertight, and concrete with a water-cementitious materials ratio below 0.50.

4. Use corrosion-inhibiting admixture in concrete mixes where indicated. Corrosion inhibiting admixture is to be added at the Project site.

a. Provide corrosion-inhibiting admixture with a minimum dosage of 15 liters per cubic meter of concrete for all below grade concrete.

2.2.4.7. LIQUID FLOOR TREATMENTS

A. Coordinate with Architectural Finish Schedule.

B. Penetrating Liquid Floor Treatment: Clear, chemically reactive, waterborne solution of inorganic silicate or siliconate materials and proprietary components; odorless; that penetrates, hardens, and densifies concrete surfaces.

1.Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. ChemMasters; Chemisil Plus.

b. ChemTec Int'l; ChemTec One.

c. Conspec by Dayton Superior; Intraseal.

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d. Curecrete Distribution Inc.; Ashford Formula.

e. Dayton Superior Corporation; Day-Chem Sure Hard (J-17).

f. Edoco by Dayton Superior; Titan Hard.

g. Euclid Chemical Company (The), an RPM company; Euco Diamond Hard.

h. Kaufman Products, Inc.; SureHard.

I. L&M Construction Chemicals, Inc.; Seal Hard.

j. Meadows, W. R., Inc.; LIQUI-HARD.

k. Metalcrete Industries; Floorsaver.

l. Nox-Crete Products Group; Duro-Nox.

m. Symons by Dayton Superior; Buff Hard.

n. US SPEC, Division of US Mix Products Company; US SPEC Industraseal.

o. Vexcon Chemicals, Inc.; Vexcon StarSeal PS Clear.

C. Penetrating Liquid Floor Treatments for Polished Concrete Finish: Clear, waterborne solution of inorganic silicate or siliconate materials and proprietary components; odorless; that penetrates, hardens, and is suitable for polished concrete surfaces.

1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

2.2.4.8. Concrete mixing

A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C 94/C 94M[ and ASTM C 1116/C 1116], and furnish batch ticket information.

1. When air temperature is between 30 deg C and 32 deg C, reduce mixing and delivery time from 90 minutes to 75 minutes, and when air temperature is above 32 deg C, reduce mixing and delivery time to 60 minutes.

B. Project-Site Mixing: Measure, batch, and mix concrete materials and concrete according to ASTM C 94/C 94M. Mix concrete materials in appropriate drum-type batch machine mixer.

1. For mixer capacity of 0.75 cu. m or smaller, continue mixing at least 1-1/2 minutes, but not more than 5 minutes after ingredients are in mixer, before any part of batch is released.

2. For mixer capacity larger than 0.75 cu. m, increase mixing time by 15 seconds for each additional

0.75 cu. m.

3. Provide batch ticket for each batch discharged and used in the Work, indicating Project identification name and number, date, mixture type, mixture time, quantity, and amount of water added. Record approximate location of final deposit in structure.

2.3. Execution:

2.3.1. Formwork

A. Design, erect, shore, brace, and maintain formwork, according to ACI 301, to support vertical, lateral, static, and dynamic loads, and construction loads that might be applied, until structure can support such loads.

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B. Construct formwork so concrete members and structures are of size, shape, alignment, elevation, and position indicated, within tolerance limits of ACI 117.

C. Limit concrete surface irregularities, designated by ACI 347 as abrupt or gradual, as follows:

1. Class A, 3 mm for smooth-formed finished surfaces.

2. Class B, 6 mm for rough-formed finished surfaces and Parking Structures.

3. [Class C, 12 mm] [Class D, 25 mm] for rough-formed finished surfaces of foundations elements and grade beams.

D. Construct forms tight enough to prevent loss of concrete mortar.

E. Fabricate forms for easy removal without hammering or prying against concrete surfaces. Provide crush or wrecking plates where stripping may damage cast concrete surfaces. Provide top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical.

1. Install keyways, reglets, recesses, and the like, for easy removal.

2. Do not use rust-stained steel form-facing material.

F. Set edge forms, bulkheads, and intermediate screed strips for slabs to achieve required elevations and slopes in finished concrete surfaces. Provide and secure units to support screed strips; use strike-off templates or compacting-type screeds.

G. Provide temporary openings for cleanouts and inspection ports where interior area of formwork is inaccessible. Close openings with panels tightly fitted to forms and securely braced to prevent loss of concrete mortar. Locate temporary openings in forms at inconspicuous locations.

H. Chamfer exterior corners and edges of permanently exposed concrete.

I. Form openings, chases, offsets, sinkages, keyways, reglets, blocking, screeds, and bulkheads required in the Work. Determine sizes and locations from trades providing such items.

J. Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.

K. Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and maintain proper alignment.

Coat contact surfaces of forms with form-release agent, according to manufacturer's written instructions, before placing reinforcement.

2.3.2. Steel reinforcement:

A. General: Comply with CRSI's "Manual of Standard Practice" for placing reinforcement.

1. Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before placing concrete.

B. Install in accordance with steel reinforcement placement shop drawings that have been reviewed by the Project Director.

C. Clean reinforcement of loose rust and mill scale, earth, ice, and other foreign materials.

D. Accurately position, support, and secure reinforcement against displacement. Locate and support reinforcement with bar supports to maintain minimum concrete cover as approved by the Project Director.

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1. Shop- or field-welding reinforcement according to AWS D1.4, where indicated.

2. Welding of reinforcing bars not permitted unless indicated on the structural drawings.

E. Set wire ties with ends directed into concrete, not toward exposed concrete surfaces.

F. Install welded wire fabric in longest practicable lengths on bar supports spaced to minimize sagging. Lap edges and ends of adjoining sheets at least one mesh spacing. Offset laps of adjoining sheet widths to prevent continuous laps in either direction. Secure overlaps with wire.

2.3.3. Joints

A. General: Construct joints true to line with faces perpendicular to surface plane of concrete.

B. Construction Joints: Install so strength and appearance of concrete are not impaired, at locations indicated or as approved by COR. Indicate locations and show details on shop drawing submittals.

1. Place joints perpendicular to main reinforcement. Continue reinforcement across construction joints, unless otherwise indicated. Do not continue reinforcement through sides of strip placements of floors and slabs.

2. Form from preformed galvanized steel, plastic keyway-section forms, or bulkhead forms with keys, unless otherwise indicated. Embed keys at least 40 mm into concrete.

3. Locate joints for beams, slabs, joists, and girders in the middle third of spans. Offset joints in girders a minimum distance of twice the beam width from a beam-girder intersection.

4. Locate horizontal joints in walls and columns at underside of floors, slabs, beams, and girders and at the top of footings or floor slabs.

5. Space vertical joints in walls as indicated. Locate joints beside piers integral with walls, near corners, and in concealed locations where possible.

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

C. Contraction (Control) Joints in Slabs-on Grade: Construct contraction joints in slabs-on-grade to form panels of patterns as shown. Use saw cuts 3 mm wide by one-fourth of the slab depth or inserts 6 mm wide by one-fourth of slab depth, unless otherwise indicated.

1. Form contraction joints by inserting premolded plastic, hardboard, or fiberboard strip into fresh concrete until top surface of strip is flush with slab surface. Tool slab edges round on each side of insert. After concrete has cured, remove inserts and clean groove of loose debris.

2. Contraction joints in unexposed floor slabs may be formed by saw cuts as soon as possible after slab finishing as may be safely done without dislodging aggregate.

3. If joint pattern is not shown, provide joints not exceeding 4.5 meters in either direction and located to be conform to bay spacing wherever possible (at column centerlines, half bays, third bays).

4. Discontinue reinforcing through joint only as shown on the drawings.

D. Isolation Joints in Slabs-on-Grade: After removing formwork, install joint-filler strips at slab junctions with vertical surfaces, such as column pedestals, foundation walls, grade beams, and other locations, as indicated.

1. Extend joint-filler strips full width and depth of joint, terminating flush with finished concrete surface, unless otherwise indicated.

2. Terminate full-width joint-filler strips not less than 12 mm or more than 25 mm below finished concrete surface where joint sealants, specified in Division 7 Section "Joint Sealants," are indicated.

3. Install joint-filler strips in lengths as long as practicable.