CORONA SOUTH MALL BUILDING "B"

IMPROVEMENT

725 S. MAIN ST.,

CORONA, CA 92882

PROJECT MANUAL

Prepared by

IDS GROUP

1 Peters Canyon Road, Suite 130

Irvine, CA 92606

Project No.24X084.01

Date: October 30, 2026

CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

TABLE OF CONTENTS

00 01 10 - 1

Division Section Title

SECTION G – GENERAL PROVISIONS

SPECIFICATIONS GROUP

Facility Construction Subgroup

DIVISION 02 - EXISTING CONDITIONS

02 41 19 SELECTIVE DEMOLITION

DIVISION 03 - CONCRETE

03 10 00 CONCRETE FORMS AND ACCESSORIES

03 20 00 CONCRETE REINFORCEMENT

03 30 00 CAST-IN-PLACE CONCRETE

03 35 43 POLISHED CONCRETE FINISHING

03 37 13 SHOTCRETE

DIVISION 04 - MASONRY

04 22 00 CONCRETE UNIT MASONRY

DIVISION 05 - METALS

05 12 00 STRUCTURAL STEEL FRAMING

05 40 00 COLD-FORMED METAL FRAMING

05 50 00 METAL FABRICATIONS

05 52 13 PIPE AND TUBE RAILINGS

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

06 10 00 ROUGH CARPENTY

06 16 00 SHEATHING

06 20 23 INTERIOR FINISH CARPENTRY

06 41 00 ARCHITECTURAL WOOD CASEWORK

06 64 00 PLASTIC PANELING

06 64 01 FRP PLASTIC PANELING

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 01 50.19 PREPARATION FOR REROOFING

07 13 26 SELF-ADHERING SHEET WATERPROOFING

07 14 16 COLD FLUID-APPLIED WATERPROOFING

07 21 00 THERMAL INSULATION

00 01 10 - 2

07 25 00 WEATHER BARRIERS

07 26 00 UNDER-SLAB VAPOR BARRIER

07 27 26 FLUID-APPLIED MEMBRANE AIR BARRIERS

07 54 19 POLYVINYL-CHLORIDE (PVC) ROOFING

07 62 00 SHEET METAL FLASHING AND TRIM

07 71 00 ROOF SPECIALTIES

07 72 00 ROOF ACCESSORIES

07 84 13 PENETRATION FIRESTOPPING

07 84 43 JOINT FIRESTOPPING

07 92 00 JOINT SEALANTS

07 92 19 ACOUSTICAL JOINT SEALANTS

DIVISION 08 - OPENINGS

08 11 13 HOLLOW METAL DOORS AND FRAMES

08 11 16.13 INTERIOR ALUMINUM DOORS AND FRAMES

08 14 16 FLUSH WOOD DOORS

08 41 13 ALUMINUM-FRAMED ENTRANCES AND STOREFRONTS

08 62 00 UNIT SKYLIGHTS

08 71 00 DOOR HARDWARE

08 80 00 GLAZING

DIVISION 09 - FINISHES

09 22 16 NON-STRUCTURAL METAL FRAMING

09 24 00 CEMENT PLASTERING

09 29 00 GYPSUM BOARD

09 30 13 CERAMIC TILING

09 51 13 ACOUSTICAL PANEL CEILINGS

09 64 66 WOOD ATHLETIC FLOORING

09 65 13

09 67 23

RESILIENT BASE AND ACCESSORIES

RESINOUS FLOORING

09 84 36 SOUND-ABSORBING CEILING UNITS

09 91 13 EXTERIOR PAINTING

09 91 23 INTERIOR PAINTING

09 96 00 HIGH-PERFORMANCE COATINGS

DIVISION 10 - SPECIALTIES

10 14 23 PANEL SIGNAGE

10 14 23.16 ROOM-IDENTIFICATION PANEL SIGNAGE

10 21 13.19 PLASTIC TOILET COMPARTMENTS

10 26 00 WALL AND DOOR PROTECTION

10 28 00 TOILET, BATH, AND LAUNDRY ACCESSORIES

10 43 00 EMERGENCY AID SPECIALTIES

10 44 16 FIRE EXTINGUISHERS

00 01 10 - 3

DIVISION 11 – EQUIPMENT

11 40 00 FOOD SERVICE EQUIPMENT

11 66 23.63 COLUMN PADDING

DIVISION 12 - FURNISHINGS

12 36 61.16 SOLID SURFACING COUNTERTOPS

Facility Services Subgroup

DIVISION 21 - FIRE SUPPRESSION

21 05 17 SLEEVES AND SLEEVE SEALS FOR FIRE-SUPPRESSION PIPING

21 05 18 ESCUTCHEONS FOR FIRE-SUPPRESSION PIPING

21 05 23 GENERAL-DUTY VALVES FOR WATER-BASED FIRE-SUPPRESSION

21 05 29

PIPING

HANGERS AND SUPPORTS FOR FIRE-SUPPRESSION PIPING AND

21 05 48

EQUIPMENT

VIBRATION AND SEISMIC CONTROLS FOR FIRE-SUPPRESSION PIPING

21 05 53

AND EQUIPMENT

IDENTIFICATION FOR FIRE-SUPPRESSION PIPING AND EQUIPMENT

21 10 00 WATER-BASED FIRE-SUPPRESSION SYSTEMS

21 11 19 FIRE DEPARTMENT CONNECTIONS

21 12 00 FIRE SUPPRESSION STANDPIPES

21 13 13 WET-PIPE SPRINKLER SYSTEMS

DIVISION 22 - PLUMBING

22 05 00 COMMON WORK RESULTS FOR PLUMBING

22 05 14 COMMON MOTOR REQUIREMENTS FOR PLUMBING EQUIPMENT

22 05 17 SLEEVES AND SLEEVE SEALS FOR PLUMBING PIPING

22 05 18 ESCUTCHEONS FOR PLUMBING PIPING

22 05 19 METERS AND GAGES FOR PLUMBING PIPING

22 05 23 GENERAL-DUTY VALVES FOR PLUMBING PIPING

22 05 29 HANGERS AND SUPPORTS FOR PLUMBING PIPING AND EQUIPMENT

22 05 48 VIBRATION AND SEISMIC CONTROLS FOR PLUMBING PIPING AND

22 05 53

IDENTIFICATION FOR PLUMBING PIPING AND EQUIPMENT

22 07 16 PLUMBING EQUIPMENT INSULATION

22 11 16 DOMESTIC WATER PIPING

22 11 19 DOMESTIC WATER PIPING SPECIALTIES

22 11 23 FACILITY NATURAL GAS PIPING

22 13 16 SANITARY WASTE AND VENT PIPING

22 13 19 SANITARY WASTE PIPING SPECIALTIES

22 34 00 FUEL-FIRED, DOMESTIC-WATER HEATERS

22 40 00 PLUMBING FIXTURES

00 01 10 - 4

DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

23 05 00 COMMON WORK RESULTS FOR HVAC

23 05 29 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

23 05 48 VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND

23 05 53

IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC

23 09 00 INSTRUMENTATION AND CONTROL FOR HVAC

23 11 23 FACILITY NATURAL-GAS PIPING

23 31 13 METAL DUCTS

23 33 00 AIR DUCT ACCESSORIES

23 74 33 ROOFTOP PACKAGE UNITS

DIVISION 26 - ELECTRICAL

26 05 19 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

26 05 26 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

26 05 29 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

26 05 33 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

26 05 44 SLEEVES AND SLEEVE SEALS FOR ELECTRICAL RACEWAYS AND

26 05 48.16

CABLING

SEISMIC CONTROLS FOR ELECTRICAL SYSTEMS

26 05 53 IDENTIFICATION FOR ELECTRICAL SYSTEMS

26 05 72 OVERCURRENT PROTECTIVE DEVICE SHORT-CIRCUIT STUDY

26 05 73 OVERCURRENT PROTECTIVE DEVICE COORDINATION STUDY

26 05 74 OVERCURRENT PROTECTIVE DEVICE ARC-FLASH STUDY

26 08 00 COMMISSIONING OF ELECTRICAL SYSTEMS

26 09 23 LIGHTING CONTROL DEVICES

26 09 43.23 RELAY-BASED LIGHTING CONTROLS

26 22 13 LOW-VOLTAGE DISTRIBUTION TRANSFORMERS

26 24 13 SWITCHBOARDS

26 24 16 LOAD CENTERS AND SIGNAL TERMINAL CABINETS

26 24 16.01 PANELBOARDS

26 27 26 WIRING DEVICES

26 28 13 FUSES

26 28 16 ENCLOSED SWITCHES AND CIRCUIT BREAKERS

26 29 23 VARIABLE FREQUENCY DRIVES

26 29 33 CONTROLLERS FOR FIRE-PUMP DRIVERS

26 33 53 STATIC UNINTERRUPTIBLE POWER SUPPLY

26 33 53 EMERGENCY LIGHTING INVERTER

26 51 19 LED INTERIOR LIGHTING

26 80 00 ELECTRICAL VEHICLE SUPPLEMENTAL

00 01 10 - 5

DIVISION 27 – COMMUNICATIONS – NOT USED

Site and Infrastructure Subgroup

DIVISION 31 - EARTHWORK

31 10 00 SITE CLEARING

31 20 00 EARTH MOVING

31 50 00 EXCAVATION SUPPORT AND PROTECTION

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 12 16 ASPHALT PAVING

32 13 13 CONCRETE PAVING

32 13 73 CONCRETE PAVING JOINT SEALANTS

32 17 13 PARKING BUMPERS

32 17 23 PAVEMENT MARKINGS

32 17 26 TACTILE WARNING SURFACING

DIVISION 33 - UTILITIES

33 14 15 SITE WATER DISTRIBUTION PIPING

33 42 00 STORMWATER CONVEYANCE

33 46 00 SUBDRAINAGE

END OF TABLE OF CONTENTS

SELECTIVE DEMOLITION

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CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

SECTION 02 41 19 - SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 SUMMARY

A. The Work of this Section Includes:

1. Demolition and removal of selected portions of exterior or interior of building or structure and site elements.

B. Related Requirements:

1. Section 01 10 00 "Summary" for restrictions on use of the premises, Owner-occupancy requirements, and phasing requirements.

2. Section 01 56 39 "Temporary Tree and Plant Protection" for temporary protection of existing trees and plants that are affected by selective demolition.

3. Section 01 73 00 "Execution" for cutting and patching procedures.

1.2 DEFINITIONS

A. Remove: Detach items from existing construction and legally dispose of off-site unless indicated to be removed and salvaged or removed and reinstalled.

B. Remove and Salvage: Detach items from existing construction, in a manner to prevent damage, and deliver to Owner as indicated.

C. Remove and Reinstall: Detach items from existing construction, in a manner to prevent damage; prepare for reuse; and reinstall where indicated.

D. Existing to Remain: Existing items of construction that are not to be removed.

1.3 MATERIALS OWNERSHIP

A. Unless otherwise indicated, demolition waste becomes property of Contractor.

1.4 INFORMATIONAL SUBMITTALS

A. Qualification Statements: For refrigerant recovery technician.

B. Proposed Protection Measures: Submit report, including Drawings, that indicates the measures proposed for protecting individuals and property , for environmental protection , for dust control and , for noise control . Indicate proposed locations and construction of barriers.

C. Schedule of Selective Demolition Activities: Indicate the following:

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CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

1. Detailed sequence of selective demolition and removal work, with starting and ending dates for each activity. Ensure Owner's on-site operations are uninterrupted.

2. Temporary interruption of utility services. Indicate how long utility services will be interrupted.

3. Coordination for shutoff, capping, and continuation of utility services.

4. Use of elevator and stairs.

5. Coordination of Owner's continuing occupancy of portions of existing building and of Owner's partial occupancy of completed Work.

D. Statement of Refrigerant Recovery: Signed by refrigerant recovery technician responsible for recovering refrigerant, stating that all refrigerant that was present was recovered and that recovery was performed in accordance with EPA regulations.

Include name and address of technician and date refrigerant was recovered.

E. Warranties: Documentation indicating that existing warranties are still in effect after completion of selective demolition.

1.5 CLOSEOUT SUBMITTALS

A. Inventory: Submit a list of items that have been removed and salvaged.

1.6 QUALITY ASSURANCE

A. Refrigerant Recovery Technician Qualifications: Type III certified by an EPA-approved certification program.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Regulatory Requirements: Comply with governing EPA notification regulations before beginning selective demolition. Comply with hauling and disposal regulations of authorities having jurisdiction.

B. Standards: Comply with ANSI/ASSP A10.6 and NFPA 241.

C. Sustainable Design Requirements for Building Reuse:

1. Maintain the existing building structure, envelope, and interior nonstructural elements of an abandoned or blighted building. Do not demolish such existing construction beyond indicated limits.

2. Maintain the existing building structural systems where indicated to remain. Do not demolish such existing construction beyond indicated limits.

3. Maintain the existing interior ceilings, interior partitions, and/or demountable walls where indicated to remain. Do not demolish such existing construction beyond indicated limits.

02 41 19 - 3

CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that utilities have been disconnected and capped before starting selective demolition operations.

B. Review Project Record Documents of existing construction or other existing condition and hazardous material information provided by Owner. Owner does not guarantee that existing conditions are same as those indicated in Project Record Documents.

C. Verify that hazardous materials have been remediated before proceeding with building demolition operations.

3.2 PREPARATION

A. Temporary Shoring: Design, provide, and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction and finishes to remain, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.

1. Strengthen or add new supports when required during progress of selective demolition.

B. Temporary Protection: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.

1. Provide protection to ensure safe passage of people around selective demolition area and to and from occupied portions of building.

2. Provide temporary weather protection, during interval between selective demolition of existing construction on exterior surfaces and new construction, to prevent water leakage and damage to structure and interior areas.

3. Protect walls, ceilings, floors, and other existing finish work that are to remain or that are exposed during selective demolition operations.

4. Cover and protect furniture, furnishings, and equipment that have not been removed.

5. Comply with requirements for temporary enclosures, dust control, heating, and cooling specified in Section 015000 "Temporary Facilities and Controls."

C. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by Architect, items may be removed to a suitable, protected storage location and reinstalled in their original locations after selective demolition operations are complete.

D. Refrigerant: Before starting demolition, remove refrigerant from mechanical equipment in accordance with 40 CFR 82 and regulations of authorities having jurisdiction.

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CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

3.3 UTILITY SERVICES AND BUILDING SYSTEMS

A. Existing Services/Systems to Remain: Maintain utilities and building systems and equipment to remain and protect against damage during selective demolition operations.

1. Maintain fire-protection facilities in service during selective demolition operations.

B. Existing Services/Systems to Be Removed, Relocated, or Abandoned: Locate, identify, disconnect, and seal or cap off utilities and building systems serving areas to be selectively demolished.

1. Owner will arrange to shut off indicated utilities when requested by Contractor.

2. Arrange to shut off utilities with utility companies.

3. If disconnection of utilities and building systems will affect adjacent occupied parts of the building, provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to those parts of the building.

4. Demolish and remove existing building systems, equipment, and components indicated on Drawings to be removed.

a. Piping to Be Removed: Remove portion of piping indicated to be removed and cap or plug remaining piping with same or compatible piping material.

b. Ducts to Be Removed: Remove portion of ducts indicated to be removed and plug remaining ducts with same or compatible ductwork material.

c. Equipment to Be Removed: Disconnect and cap services and remove equipment and components.

5. Abandon existing building systems, equipment, and components indicated on Drawings to be abandoned in place.

a. Piping to Be Abandoned in Place: Drain piping and cap or plug piping with same or compatible piping material and leave in place.

b. Ducts to Be Abandoned in Place: Cap or plug ducts with same or compatible ductwork material and leave in place.

6. Remove and reinstall/salvage existing building systems, equipment, and components indicated on drawings to be removed and reinstalled or removed and salvaged:

a. Equipment to Be Removed and Reinstalled: Disconnect and cap services and remove, clean, and store equipment and components; when appropriate, reinstall, reconnect, and make equipment operational.

b. Equipment to Be Removed and Salvaged: Disconnect and cap services and remove equipment and components and deliver to Owner.

3.4 SELECTIVE DEMOLITION, GENERAL

A. General: Demolish and remove existing construction only to extent required by new construction and as indicated. Use methods required to complete the Work within

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CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

limitations of governing regulations and as follows:

1. Neatly cut openings and holes plumb, square, and true to dimensions required.

Use cutting methods least likely to damage construction to remain or adjoining construction. Use hand tools or small power tools designed for sawing or grinding, not hammering and chopping. Temporarily cover openings to remain.

2. Cut or drill from the exposed or finished side into concealed surfaces to avoid marring existing finished surfaces.

3. Do not use cutting torches until work area is cleared of flammable materials. At concealed spaces, such as duct and pipe interiors, verify condition and contents of hidden space before starting flame-cutting operations. Maintain portable fire-suppression devices during flame-cutting operations.

4. Maintain fire watch during and for at least 2 hours after flame-cutting operations.

5. Maintain adequate ventilation when using cutting torches.

6. Remove decayed, vermin-infested, or otherwise dangerous or unsuitable materials and promptly dispose of off-site.

7. Remove structural framing members and lower to ground by method suitable to avoid free fall and to prevent ground impact or dust generation.

8. Locate selective demolition equipment and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing.

B. Site Access and Temporary Controls: Conduct selective demolition and debris-removal operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.

1. Do not close or obstruct streets, walks, walkways, or other adjacent occupied or used facilities without permission from Owner and authorities having jurisdiction.

Provide alternate routes around closed or obstructed trafficways if required by authorities having jurisdiction.

3.5 SELECTIVE DEMOLITION PROCEDURES FOR SPECIFIC MATERIALS

A. Concrete:

1. Demolish in small sections. Using power-driven saw, cut concrete to a depth of at least 3/4 inch at junctures with construction to remain. Dislodge concrete from reinforcement at perimeter of areas being demolished, cut reinforcement, and then remove remainder of concrete. Neatly trim openings to dimensions indicated.

2. Demolish in sections. Cut concrete full depth at junctures with construction to remain and at regular intervals using power-driven saw, and then remove concrete between saw cuts.

B. Masonry: Demolish in small sections. Cut masonry at junctures with construction to remain, using power-driven saw, and then remove masonry between saw cuts.

C. Concrete Slabs-on-Grade: Saw-cut perimeter of area to be demolished, and then break up and remove.

D. Resilient Floor Coverings: Remove floor coverings and adhesive in accordance with

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CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

recommendations in RFCI's "Recommended Work Practices for the Removal of Resilient Floor Coverings." Do not use methods requiring solvent-based adhesive strippers.

E. Roofing: Remove no more existing roofing than what can be covered in one day by new roofing and so that building interior remains watertight and weathertight. See Section 07 54 13 " Keytone Ethylene Ester (KEE) Roofing " for new roofing requirements.

1. Remove existing roof membrane, flashings, copings, and roof accessories.

2. Remove existing roofing system down to substrate.

3.6 DISPOSAL OF DEMOLISHED MATERIALS

A. Remove demolition waste materials from Project site and recycle or dispose of them in accordance with Section 017419 "Construction Waste Management and Disposal."

1. Do not allow demolished materials to accumulate on-site.

2. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

3. Comply with requirements specified in Section 01 74 19 "Construction Waste

Management and Disposal."

B. Burning: Do not burn demolished materials.

3.7 CLEANING

A. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

END OF SECTION 02 41 19

CONCRETE FORMS AND ACCESSORIES

03 10 00 - 1

CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

SECTION 03 10 00

PART 1 - GENERAL

1.1 SUMMARY

A. Provisions of Division 01 apply to this section.

B. Section Includes:

1. Formwork for cast-in-place concrete as indicated.

2. Installation of items to be embedded in concrete, such as anchor bolts, inserts, embeds, and sleeves.

C. Related Sections:

1. Division 01 – General Requirements.

2. Section 03 20 00: Concrete Reinforcement.

3. Section 03 30 00: Cast-In-Place Concrete.

1.2 SYSTEM DESCRIPTION

A. Regulatory Requirements: Except as otherwise specified herein, Work of this section shall be in accordance with CBC, Chapter 19, Concrete.

1.3 SUBMITTALS

A. Shop Drawings: Submit Shop Drawings indicating locations of forms, joints, embedded items, and accessories.

B. Product Data: Submit manufacturer's Product Data for form materials and accessories.

1.4 QUALITY ASSURANCE

A. Comply with the following as a minimum requirement:

1. Conform to ACI 347R-14 (or latest edition) - Guide to Formwork for

Concrete.

2. Wood Structural Panel: Conform to tables for form design and strength in

APA Form V 345.

B. Mock-ups: Provide mock-ups for architectural exposed finishes; 100 square feet minimum size. Locate as required by the Architect.

03 10 00 - 2

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PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

PART 2 - PRODUCTS

2.1 GENERAL

A. Form materials may be reused during progress of the Work provided they are completely cleaned and reconditioned, recoated for each use, capable of producing formwork of required quality, and are structurally sound.

B. Form Lumber: WCLIB Construction Grade or Better, WWPA No. 1 or Better.

C. Wood Structural Panel: PS 1-19, Group I, Exterior Grade B-B Plyform or better, minimum 5-ply and 3/4 inch thick for exposed locations and at least 5/8 inch thick for unexposed locations, grade marked, not mill oiled. Furnished wood structural panel with medium or high density overlay is permitted.

D. Coated Form Wood Structural Panel: For exposed painted concrete, plastic overlaid wood structural panel of grade specified above, factory coated with a form coating and release agent Noxcrete", or equal.

E. Tube Forms: Burke "SmoothTube,” Sonoco "Seamless Sonotubes,” or Alton Building Products "Sleek Seamless Standard Wall,” of the type leaving no marks in concrete, one-piece lengths for required heights.

F. Joist Forms: Code recognized steel or molded plastic types as required.

G. Special Forms: For exposed integrally-colored concrete, wood structural panel as above with high density overlay, wood structural panel with integral structural hardboard facing or fibrous glass reinforced plastic facing, providing specified finish.

H. For Exposed Concrete Finish:

1. Wood Structural Panel: New, waterproof, synthetic resin bonded, exterior type Douglas fir or Southern pine wood structural panel manufactured especially for concrete formwork and conforming to NIST PS 1, BB grade, class I.

2. Glass-Fiber-Fabric Reinforced Plastic Forms: Matched, tight fitting, stiffened to support weight of concrete without deflection detrimental to structural tolerances and appearance of finished concrete surfaces.

3. Steel: Minimum 16 gage sheet, well matched, tight fitting, stiffened to support weight of concrete, without deflection detrimental to tolerances and appearances of finished concrete surfaces.

4. Wood Structural Panel: "Finland Form,” or "Combi Form" distributed by North American Plywood Corporation. The material shall be furnished with hard smooth birch face veneers with phenolic resin thermally fused onto panel sides. Edges shall be factory sealed.

I. Form Ties: Prefabricated rod, flat band, wire, internally threaded disconnecting type, not leaving metal within 1-1/2 inch of concrete surface.

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PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

J. Form Coating: Non-staining clear coating free from oil, silicone, wax, not grain-raising, "Formshield" by A.C. Horn, Inc., "Release" by Burke Concrete Accessories, or "Cast-Off" by Sonneborn Building Products. Where form liners are furnished, provide form coatings recommended by form liner manufacturer.

K. Form Liner: Rigid or resilient type by L.M. Scofield, Labrado Forms, Symons, or Greenstreak

L. Void Forms: Manufactured by SureVoid Products, Inc, or equal. Forms shall be "WallVoid" for temporary support of concrete walls and grade beams spanning between supports, and "SlabVoid" for creating gaps between concrete slabs or steps and underlying soils. Void forms shall be fabricated of corrugated paper with moisture resistant exterior, and shall be capable of withstanding working load of 1,500 psf. Provide accessories as required.

PART 3 - EXECUTION

3.1 GENERAL

A. Forms shall be constructed so as to shape final concrete structure conforming to shape, lines and dimensions of members required by Drawings and Specifications, and shall be sufficiently tight to prevent leakage of mortar. They shall be properly braced or tied together to maintain position and shape. Forms and their supports shall be designed so that previously placed structures will not be damaged. Forms shall be true to line within the tolerances set forth in ACI 347 and ACI 117, whichever is stricter, unless otherwise directed by the Architect.

3.2 ERECTION

A. Wood structural panel shall be installed with horizontal joints level, vertical joints plumb and with joints tight. Back joints by studs or solid blocking, and fill where necessary for smoothness. Reused wood structural panel shall be thoroughly cleaned, damaged edges or surfaces repaired and both sides and edges oiled with colorless form oil. Nail wood structural panel along edges, and to intermediate supports, with common wire nails spaced as necessary to maintain alignment and prevent warping.

B. Openings for Cleaning: Provide temporary openings at points in formwork to facilitate cleaning and inspection. At base of walls and wide piers, bottom form board on one face for entire length shall be omitted until form has been cleaned and inspected.

3.3 REMOVAL OF FORMS

A. Forms shall not be removed until concrete has sufficiently hydrated to maintain its integrity and not be damaged by form removal operations. The contractor shall

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CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

remain fully and solely responsible for structure condition and integrity in relation to decisions regarding time of form removal. The preferred method of determining form removal time is the assessment of sufficient concrete strength based on tests of field cured specimens per 3.3B; however, at the contractor’s option and sole responsibility, the contractor may refer to Section 5.7 of ACI 347R-14 for minimum elapsed times and associated footnotes and provisions.

Shoring shall not be removed until member has acquired sufficient strength to support its weight, load upon it, and added load of construction.

B. Compressive strength of in-place concrete shall be determined by testing field-cured specimens representative of concrete location or members, as specified in Section 03 30 00: Cast-In-Place Concrete.

3.4 PROTECTION

A. Protect the Work of this section until Substantial Completion.

3.5 CLEAN UP

A. Remove rubbish, debris and waste materials and legally dispose of off the Project site.

END OF SECTION 03 10 00

CONCRETE REINFORCEMENT

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CORONA SOUTH MALL, BUILDING "B" CORE AND SHELL IMPROVEMENT

PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

SECTION 03 20 00 - CONCRETE REINFORCEMENT

PART 1 - GENERAL

1.1 SUMMARY

A. Provisions of Division 01 apply to this section.

B. Section Includes:

1. Concrete steel reinforcement as indicated.

C. Related Sections:

1. Division 1 – General Requirements.

2. Section 03 10 00: Concrete Formwork and Accessories.

3. Section 03 30 00: Cast-In-Place Concrete.

4. Section 04 22 00: Concrete Unit Masonry.

1.2 REFERENCES

A. ACI 117 - Specification for Tolerances for Concrete Construction and Materials.

B. ACI 301 – Specifications for Structural Concrete.

C. ACI 315 – Details and Detailing of Concrete Reinforcing.

D. ACI 318-19 – Building Code Requirements for Structural Concrete and Commentary.

E. ACI SP-66 – ACI Detailing Manual.

F. ACI A184/A184M – Standard Specification for Welded Deformed Steel Bar Mats for Concrete Reinforcement

G. ASTM A615/A615M – Standard Specification for Deformed and Plain Carbon – Steel Bars for Concrete Reinforcing.

H. ASTM A706/A706M – Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement.

I. ASTM A1064/A1064M – Standard Specification for Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete.

J. AWS D1.4/D1.4M -18 – Structural Welding Code – Reinforcing Steel.

K. CRSI (MSP) – Manual of Standard Practice.

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PROJECT NO. 24X084.01 | CLIENT: CITY OF CORONA

L. CRSI – Placing Reinforcing Bars.

1.3 SYSTEM DESCRIPTION

A. Regulatory Requirements: Fabrication and placement of reinforcing shall be in accordance with requirements of CBC, Chapter 19.

1.4 SUBMITTALS

A. Shop Drawings: Submit steel reinforcement Shop Drawings in accordance with ACI 318 and ACI 315. Include assembly diagrams, bending charts and slab plans. Indicate lengths and location of splices, size and lengths of reinforcing steel. All reinforcement shop drawings shall be submitted in electronic format

(PDF).

B. Manufacturer’s Certificate and Product Data: Certify that reinforcing steel and accessories supplied for this Project meet or exceed specified requirements.

C. Welding Reports and Certificates: Submit welders certificates and test/inspection reports for required testing and inspection.

D. Closeout Submittals: Record exact locations of reinforcing that vary from Shop Drawings.

1.5 QUALITY ASSURANCE

A. Comply with the following as a minimum requirement:

1. CBC, Chapter 19, Concrete.

2. American Concrete Institute (ACI).

3. Concrete Reinforcing Steel Institute (CRSI) Manual of Standard Practice.

4. American Welding Society (AWS).

B. Source Quality Control: Refer to S-003 for general requirements and to following paragraphs for specific procedures. Testing laboratory retained by the Owner shall perform following conformance testing, select test Samples of bars, ties, and stirrups from the material at the Project site or from the place of distribution, with each Sample consisting of not less than two 18 inch long pieces, and perform the following tests according to ASTM A 615 and ASTM A706.

1. Identified Bars: If Samples are obtained from bundles as delivered from the mill, identified as to heat number, accompanied by mill analyses and mill test reports, and properly tagged with the identification certificate so as to be readily identified, perform one tensile and one bend test for each 10 tons or fraction thereof of each size of bars. Submit mill reports when Samples are selected.

2. Unidentified Bars: When positive identification of reinforcing bars cannot be performed and when random Samples are obtained, perform tests for

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each 2.5 tons or fraction thereof, one tensile and one bend test from each size of bars.

C. Certification of Welders: Shop and Project site welding shall be performed by certified welding operators.

1.6 DELIVERY, STORAGE AND HANDLING

A. Avoid exposure to dirt, moisture or conditions harmful to reinforcing.

B. Reinforcing steel bars, wire, and wire fabric shall be stored on the Project site to permit easy access for examination and identification of each shipment. Material of each shipment shall be separated for size and shape.

PART 2 - PRODUCTS

2.1 GENERAL

A. Provide reinforcing of sizes, gages and lengths indicated, bent to indicated shapes.

2.2 MATERIALS

A. Steel Reinforcing Bars: ASTM A615 or ASTM A706 deformed grade 60 billet steel unless otherwise specified or indicated.

B. Bars or Rod Mats: ASTM A184.

C. Deformed Bar Anchors: ASTM A1064.

D. Tie Wire: ASTM A1064, Black, soft-annealed, 16 gage minimum.

E. Chairs, Spacers, Supports, and Other Accessories: Standard manufacture conforming to ACI-315 fabricated from steel wire of required types and sizes. For reinforcement supported from grade, provide properly sized dense precast blocks of concrete.

2.3 FABRICATION OF REINFORCING BARS:

A. Comply with CRSI Manual of Standard Practice for Reinforced Concrete Construction for fabrication of reinforcing steel.

B. Bending and Forming: Fabricate bars of the indicated sizes and bend and form to required shapes and lengths by methods not injurious to materials. Do not heat reinforcement for bending. Bend bars No. 6 size and larger in the shop only.

Bars with unscheduled kinks or bends are not permitted. Provide only tested and permitted bar materials.

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C. Welding: Provide only ASTM A706 steel where welding is indicated. Perform welding by the direct electric arc process in accordance with AWS D1.4 and specified low-hydrogen electrodes. Preheat 6 inches each side of joint. Protect joints from drafts during the cooling process; accelerated cooling is not permitted.

Do not tack weld bars. Clean metal surfaces to be welded of loose scale and foreign material. Clean welds each time electrode is changed and chip burned edges before placing welds. When wire brushed, the completed welds must exhibit uniform section, smooth welded metal, feather edges without undercuts or overlays, freedom from porosity and clinkers, and good fusion and penetration into the base metal. Cut out welds or parts of welds deemed defective, using chisel, and replace with proper welding. Prequalification of welds shall be in accordance with CBC requirements.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Bars shall be bent cold. Bars partially embedded in concrete shall not be field bent except as indicated on reviewed Shop Drawings. Before installation, clean reinforcing of loose scale, rust, oil, dirt and any coating that could reduce bond.

B. Accurately position, install, and secure reinforcing to prevent displacement during the placement of concrete.

C. Provide metal chairs to hold reinforcement the required distance above form bottoms. In beams and slab construction, provide chairs under top slab reinforcement as well as under bottom reinforcement. Space chairs so that reinforcement will not be displaced during installation. Provide metal spacers to secure proper spacing. Stirrups shall be accurately and securely wired to bars at both top and bottom. At slabs, footings, and beams in contact with earth, provide concrete blocks to support reinforcement at required distance above grade.

D. Install and secure reinforcement to maintain required clearance between parallel bars and between bars and forms. Lapped splices shall be installed wherever possible in a manner to provide required clearance between sets of bars.

Stagger lapped splices. Dowels and bars extending through construction joints shall be secured in position against displacement before concrete is installed and subsequently cleaned of concrete encrustations while they are still soft.

E. Do not install reinforcing in supported slabs and beams until walls and columns have been installed to underside of slabs and beams or until construction joints have been thoroughly cleaned. Reinforcing shall be inspected before placement of concrete and cleaned as required.

F. Use deformed bars unless otherwise indicated, except for spiral reinforcement.

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3.2 CLEAN UP

A. Remove rubbish, debris and waste materials and legally dispose of off the Project site.

3.3 PROTECTION

A. Protect the Work of this section until Substantial Completion.

END OF SECTION 03 20 00

CAST-IN-PLACE CONCRETE

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SECTION 03 30 00 - CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 SUMMARY

A. Provisions of Division 01 apply to this section.

B. Section Includes:

1. Cast-in-place concrete placement and finishing.

C. Related Sections:

1. Division 1 – General Requirements.

2. Section 03 10 00: Concrete Forms and Accessories.

3. Section 03 20 00: Concrete Reinforcement.

4. Section 03 37 13: Shotcrete

5. Section 07 26 20: Under-Slab Vapor Barrier.

1.2 SUBMITTALS

A. Shop Drawings: Submit shop drawings indicating locations of cast-in-place concrete Work and accessory items such as vapor barriers. Include details and locations of reinforcing, embedded items, and interfacing with other Work. All shop drawing submittals shall be in electronic format (PDF).

B. Product Data:

1. Mix Design: Submit a concrete mix design for each mix that will be provided for the Work. Indicate where each mix will be used. Include water/cement ratio, size of coarse aggregate and amount of any admixture. Predict minimum compressive strength in accordance with the strength requirements shown in the drawings and/or specifications, maximum slump and air content percentage. Mix designs shall be prepared and stamped by a licensed California Civil Engineer.

2. Manufacturer of ready-mixed concrete shall deliver to the project inspector a certificate with each mixer truck. Certificate shall bear the signature of representative of the testing laboratory, and shall state quantity of cement, water, fine and coarse aggregate and admixtures.

C. Material Samples: Submit Samples illustrating concrete finishes, minimum 12 inches x 12 inches in size.

D. Certificates: Submit a notarized certificate that each of following conforms to the latest standards indicated:

1. Aggregates – ASTM Standard C33

2. Admixtures - ASTM Standard C260

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3. Curing materials - ASTM Standard C171

1.3 QUALITY ASSURANCE

A. Comply with the following as a minimum requirement.

B. California Building Code (CBC) Chapter 19, applicable edition as determined by the governing regulatory authority.

C. American Concrete Institute (ACI) Publications, latest editions or as applicable as determined by the governing regulatory authority:

1. ACI 211 - Recommended Practice for Selecting Proportions of Concrete.

2. ACI 301 - Specifications for Structural Concrete for Buildings.

3. ACI 304 - Recommended Practice for Measuring, Mixing, Transporting and

Placing Concrete.

4. ACI 305 - Recommended Practice for Hot Weather Concreting.

5. ACI 306 - Recommended Practice for Cold Weather Concreting.

6. ACI 308 - Recommended Practice for Curing Concrete.

7. ACI 309 - Recommended Practice for Consolidation of Concrete.

8. ACI 318-19 – Building Code Requirements for Structural Concrete.

D. American Society for Testing and Materials (ASTM) Standards, latest editions:

1. ASTM C31/C31M – Standard Practice for Making and Curing Concrete Test

Specimens in the Field.

2. ASTM C33/C33M – Standard Specification for Concrete Aggregates.

3. ASTM C39/C39M – Standard Test Method for Compressive Strength of

Cylindrical Concrete Specimens.

4. ASTM C88 – Standard Test Method for Soundness of Aggregates by use of

Sodium Sulphate or Magnesium Sulphate.

5. ASTM C94/C94M – Standard Specification for Ready-Mixed Concrete.

6. ASTM C143/C143M – Standard Test Method for Slump of Hydraulic Cement

Concrete.

7. ASTM C150/C150M – Standard Specification for Portland Cement.

8. ASTM C171 – Standard Specification for Sheet Materials for Curing Concrete.

9. ASTM C172/C172M – Standard Practice for Sampling Freshly Mixed Concrete.

10. ASTM C173/C173M – Standard Test Method for Air Content of Freshly Mixed

Concrete by the Volumetric Method.

11. ASTM C227 – Standard Test Method for Potential Alkali Reactivity of Cement

Aggregate Combinations (Mortar-Bar Method).

12. ASTM C231/C231M – Standard Test Method for Air Content of Freshly Mixed

Concrete by the Pressure Method.

13. ASTM C260/C260M – Standard Specification for Air-Entraining Admixtures for

Concrete.

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14. ASTM C289 – Standard Test Method for Potential Alkali Silica Reactivity of Aggregates (Chemical Method).

15. ASTM C330/C330M – Standard Specification for Lightweight Aggregates for Structural Concrete.

16. ASTM D 1751 – Standard Specification for Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types).

E. Continuous inspection per CBC Section 1705.3.3 shall be provided at the batch plant and for transit-mixed concrete to run check sieve analysis of aggregate, check moisture content of fine aggregate, check design of mix, check cement being used with test reports, check loading of mixer trucks, and certify to quantities of materials placed in each mixer truck.

F. Inspection shall be performed by a representative of a testing laboratory selected by the Owner. Owner will pay for inspection costs. Notify the laboratory 24 hours in advance of time concrete is to be mixed. Notify the laboratory of postponement or cancellation of mixing within at least 24 hours of scheduling time.

G. Continuous batch plant inspection requirement may be waived in accordance with the CBC Section 1705.3.3.1. Waiver shall be in writing, including approval by the enforcement agency.

H. Strength Test of Concrete: Refer to S-003.

1.4 DELIVERY, STORAGE AND HANDLING

A. Mixing and Placing Concrete: Refer to ACI 318-19 and S-003.

B. Ready-mix concrete shall be mixed and delivered in accordance with ASTM C94, CBC and CBC Standards, as well as ACI 318. Each batch of concrete delivered to the project site shall be accompanied by a time slip bearing departure time and signature of batch plant supervisor. Concrete placement shall be completed, and concrete placed into its final position as shown on the drawings within 90 minutes after start of mixing.

Start of mixing time and completion of concrete placement time shall be documented in writing for all concrete pours.

C. Store cements and aggregate materials so as to prevent their deterioration or intrusion by foreign matter. Deteriorated or contaminated materials shall not be furnished.

1.5 JOB CONDITIONS

A. Cold Weather Requirements:

1. Adequate equipment shall be provided for heating concrete materials and protecting concrete during freezing or near-freezing weather. Surfaces, in which concrete is to come in contact with, shall be free from frost or ice. No frozen materials or materials containing ice shall be furnished.

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2. When placing concrete during freezing or near-freezing weather the mix shall have a temperature of at least 50 degrees F., but not more than 90 degrees F.

when cement is added. Concrete shall be maintained at a temperature of at least 50 degrees F. for at least 72 hours after placing or until it has thoroughly hydrated. When necessary, concrete materials shall be heated before mixing.

Special precautions shall be provided for protection of transit-mixed concrete.

B. Hot Weather Requirements:

C. During hot weather, proper attention shall be provided for ingredients, production methods, handling, placing, protection and curing, to prevent excessive concrete temperatures or water evaporation which could impair required strength or durability.

PART 2 - PRODUCTS

2.1 GENERAL

A. Ready-Mixed Concrete: Mix and deliver in accordance with the requirements of CBC and ACI 318.

B. Normal Weight Concrete:

1. Compressive Strength, when tested in accordance with ASTM C39/C39M at 28 days: As indicated on drawings.

2. Fly Ash Content: Maximum 25 percent of cementitious materials by weight.

3. Water-Cement Ratio: Maximum percent by weight as indicated on drawings.

4. Maximum Aggregate Size: 1 inch or as indicated on drawings.

C. Strength of Concrete: Provide concrete to the following criteria unless shown otherwise on the drawings.

Min 28 day Max Max Size Max Element Strength PSI Slump Aggregate Type W/C Ratio

Footings, Foundations 4,000 4 inch 1 inch Normal wt. Concrete 0.45

Walls 4,000 4 inch 1 inch Normal wt. Concrete 0.40

Slabs on grade 4,000 4 inch 1 inch Normal wt. Concrete 0.45

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MATERIALS

D. Cement: ASTM C150, Type V. Furnished cement shall be as selected and reviewed for concrete proportioning.

E. Aggregates: Aggregates shall conform to ASTM C33, ASTM C227, ASTM C330 and CBC 1903.5 except as modified herein. Any suitable individual grading of coarse aggregate may be furnished, provided such grading results in a mix that conforms to all requirements of this specification and the drawings. The gradings shown below are typical industry values for maximum aggregate sizes from ¾” to 1-1/2”. Since this project limits maximum aggregate size to 1”, the 1-1/2” gradation information does not apply. If a smaller maximum aggregate size is used, for example 3/8”, the contractor shall submit an appropriate gradation.

GRADING OF COMBINED AGGREGATE

Sieve Number or 1-1/2" 1" 3/4" Size in Inches Maximum Maximum Maximum Passing a 2" ------ ------ ------ Passing a 1-1/2" 95-100 ------ ------ Passing a 1" 70-90 90-100 ------ Passing a 3/4" 50-80 70-95 90-100 Passing a 3/8" 40-60 45-70 55-75 Passing a No. 4 35-55 35-55 40-60 Passing a No. 8 25-40 27-45 30-46 Passing a No. 16 16-34 20-38 23-40 Passing a No. 30 12-25 12-27 13-28 Passing a No. 50 2-12 5-15 5-15 Passing a No. 100 0-3 0-5 0-5

F. Fly Ash: ASTM C618, Class F

G. Water: Water shall be potable and free from deleterious matter.

H. Admixtures: Add acceptable admixtures as recommended in ACI 211.1 and at rates recommended or required by manufacturer.

1. Do not use chemicals that will result in soluble chloride ions in excess of 0.1 percent by weight of cement.

2. Air Entrainment Admixture: ASTM C260/C260M.

3. High Range Water Reducing and Retarding Admixture:

ASTM C494/C494M Type G

4. High Range Water Reducing Admixture: ASTM C494/C494M Type F.

5. Water Reducing and Accelerating Admixture: ASTM C494/C494M Type E.

6. Water Reducing and Retarding Admixture: ASTM C494/C494M Type D.

7. Accelerating Admixture: ASTM C494/C494M Type C.

8. Retarding Admixture: ASTM C494/C494M Type B.

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9. Water Reducing Admixture: ASTM C494/C494M Type A.

I. Grout: ASTM C1107, non-shrink type, pre-mixed compound consisting of non-metallic aggregate, cement, water reducing and plasticizing additives, capable of developing a minimum compressive strength of 7,000 psi at 28 days; of consistency suitable for application and a 30-minute working time.

J. Curing Paper and Liquid Curing Compounds:

1. Curing Paper: A standard brand conforming to ASTM C171, Type 1 - Regular.

2. Liquid Curing Compounds: A standard brand, clear liquid conforming to ASTM

C309, Master Builders, Grace, Antihydro.

K. Expansion Joint Fillers: Preformed strips, non-extruding and resilient bituminous type, of thickness indicated, conforming to ASTM D1751.

L. Underlayment: Latex underlayment for filling low spots in concrete shall be Tile-Tex by Flintkote Co., Webtex #60 or Fixallatex by Dowman Products Co.

M. Vapor Barrier: See Section 07 26 00 Under-Slab Vapor Barrier.

PART 3 - EXECUTION

3.1 GENERAL

A. Time of Placing: Do not place concrete until reinforcement, conduits, outlet boxes, anchors, hangers, sleeves, bolts, and other embedded materials are securely fastened in place. Contact the IOR at least 24 hours before placing concrete; do not place concrete until inspected by the IOR.

B. Pouring Record: A record shall be kept on the Project site of time and date of placing concrete in each portion of structure. Such record shall be maintained on the project site until substantial completion and shall be available for examination by all project team members, including the design team, inspectors and Owner.

3.2 PREPARATION

A. Vapor Barrier: Refer to Specification 07 26 00 Under-Slab Vapor Barrier.

B. Reglets and Rebates:

1. Form reglets and rebates in concrete to receive flashing, frames and other equipment as detailed and required. Coordinate dimensions and locations required with other related Work.

2. If concrete slabs on grade adjoin a wall or other perpendicular concrete surface, form a reglet in wall to receive and carry horizontal concrete Work. Reglet shall be full thickness of the slab and shall be 3/4 inch wide, unless otherwise

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indicated. Requirement does not apply to exterior walks, unless specifically indicated.

C. Screeds: Install screeds accurately and maintain at required grade or slab elevations after steel reinforcement has been installed, but before starting to place concrete.

Install screeds adjacent to walls and in parallel rows not to exceed 8 feet on centers.

3.3 INSTALLATION

A. Conveying and Placing:

1. Concrete shall be placed only under direct observation of the project inspector.

Do not place concrete outside of regular working hours unless the project inspector has been notified at least 48 hours in advance.

2. Concrete shall be conveyed from mixer to location of final placement by methods which will prevent separation or loss of materials.

3. Concrete shall be placed as nearly as practicable to its final position to avoid segregation due to re-handling or flowing. No concrete that has partially hydrated or has been contaminated by foreign materials shall be placed, nor shall re-tempered concrete or concrete which has been remixed after initial set be placed.

4. In placing concrete in columns, walls or thin sections, provide openings in forms, elephant trunks, tremies or other recognized devices, to prevent segregation and accumulation of partially hydrated concrete on forms or metal reinforcement above level of concrete being placed. Such devices shall be installed so that concrete will be dropped vertically. Unconfined vertical drop of concrete from end of such devices to final placement surface shall not exceed 6 feet.

5. Concrete shall be placed as a continuous operation until placing of panel or section is completed. Top surfaces of vertically formed lifts shall be level unless noted otherwise on the drawings.

6. Concrete shall be thoroughly consolidated during placement, and shall be worked around reinforcement and embedded fixtures with mechanical…