Attachment J.23 Project Maual.pdf

PROJECT MANUAL

DISTRICT OF COLUMBIA COURTS

DC TO25 HEATING SYSTEM UPGRADE

Prepared for: DISTRICT OF COLUMBIA COURTS

ISSUED FOR BID

Project No: 15749

Issue date: JULY 3, 2025

Prepared by:

SMITHGROUP 15749 DISTRICT OF COLUMBIA COURTS

JULY 3, 2025 – ISSUED FOR BID

Table of Contents TOC - 1

TABLE OF CONTENTS

COVER SHEET

TABLE OF CONTENTS

NOTE: SECTIONS NOTED WITH ** ARE WRITTEN AND PROVIDED BY SMITHGROUP CONSULTANTS

DIVISION 02 - EXISTING CONDITIONS

SECTION 024119 - SELECTIVE STRUCTURE DEMOLITION

DIVISION 03 - CONCRETE

SECTION 033000 - CAST-IN-PLACE CONCRETE**

DIVISION 04 - MASONRY

SECTION 042200 - CONCRETE UNIT MASONRY

DIVISION 05 - METALS

SECTION 051200 - STRUCTURAL STEEL FRAMING**

SECTION 054300 - SLOTTED CHANNEL FRAMING

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

SECTION 061000 - ROUGH CARPENTRY

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

SECTION 070150 - CUTTING, PATCHING, AND REPAIRING OF EXISTING ROOFING

SECTION 076200 - SHEET METAL FLASHING AND TRIM

SECTION 078413 - PENETRATION FIRESTOPPING

SECTION 078443 - JOINT FIRESTOPPING

SECTION 079200 - JOINT SEALANTS

SECTION 079219 - ACOUSTICAL JOINT SEALANTS

DIVISION 08 - OPENINGS

SECTION 081113 - HOLLOW METAL DOORS AND FRAMES

SECTION 087100 - DOOR HARDWARE

SECTION 089116 – OPERABLE WALL LOUVERS

DIVISION 09 - FINISHES

SECTION 090190.52 - MAINTENANCE REPAINTING

SECTION 090561.13 - MOISTURE VAPOR EMISSION CONTROL

SECTION 092116.23 - GYPSUM BOARD SHAFT WALL ASSEMBLIES

SECTION 092216 - NON-STRUCTURAL METAL FRAMING

SECTION 092900 - GYPSUM BOARD

SECTION 095113 - ACOUSTICAL PANEL CEILINGS

SECTION 096513 - RESILIENT BASE AND ACCESSORIES

SECTION 096813 - TILE CARPETING

SECTION 099123 - INTERIOR PAINTING

DIVISION 21 - FIRE SUPPRESSION

SECTION 211313 – FIRE SPRINKLER SYSTEMS

JULY 3, 2025 – ISSUED FOR BID

Table of Contents TOC - 2

DIVISION 22 - PLUMBING

SECTION 220413 - COMMON SUBMITTAL REQUIREMENTS FOR PLUMBING

SECTION 220516 - EXPANSION FITTINGS AND LOOPS FOR PLUMBING PIPING

SECTION 220517 - SLEEVES AND SLEEVE SEALS FOR PLUMBING PIPING

SECTION 220519 - METERS AND GAGES FOR PLUMBING PIPING

SECTION 220523.12 - BALL VALVES FOR PLUMBING PIPING

SECTION 220523.13 - BUTTERFLY VALVES FOR PLUMBING PIPING

SECTION 220523.14 - CHECK VALVES FOR PLUMBING PIPING

SECTION 220529 - HANGERS AND SUPPORTS FOR PLUMBING PIPING AND EQUIPMENT

SECTION 220553 - IDENTIFICATION FOR PLUMBING PIPING AND EQUIPMENT

SECTION 220719 - PLUMBING PIPING INSULATION

SECTION 220800 - COMMISSIONING OF PLUMBING

SECTION 221116 - DOMESTIC WATER PIPING

SECTION 221119 - DOMESTIC WATER PIPING SPECIALTIES

SECTION 221316 - SANITARY WASTE AND VENT PIPING

SECTION 221319 - SANITARY WASTE PIPING SPECIALTIES

SECTION 221319.13 - SANITARY DRAINS

SECTION 221413 – FACILITY STORM DRAINAGE PIPING

SECTION 223500 - DOMESTIC-WATER HEAT EXCHANGERS

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

SECTION 230100 - COMMON WORK RESULTS FOR HVAC

SECTION 230413 - COMMON SUBMITTAL REQUIREMENTS FOR HVAC

SECTION 230513 - COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

SECTION 230516 - EXPANSION FITTINGS AND LOOPS FOR HVAC PIPING

SECTION 230517 - SLEEVES AND SLEEVE SEALS FOR HVAC PIPING

SECTION 230519 - METERS AND GAUGES FOR HVAC PIPING

SECTION 230523 - GENERAL-DUTY VALVES FOR HVAC PIPING

SECTION 230529 - HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

SECTION 230548.13 - VIBRATION CONTROLS FOR HVAC

SECTION 230553 - IDENTIFICATION FOR HVAC, PIPING AND EQUIPMENT

SECTION 230593 - TESTING, ADJUSTING, AND BALANCING FOR HVAC

SECTION 230713 - DUCT INSULATION

SECTION 230716 - HVAC EQUIPMENT INSULATION

SECTION 230719 - HVAC PIPING INSULATION

SECTION 230800 - COMMISSIONING OF HVAC

SECTION 230900 - INSTRUMENTATION AND CONTROL FOR HVAC

SECTION 231123 - FACILITY NATURAL-GAS PIPING

SECTION 232113 - HYDRONIC PIPING

SECTION 232116 - HYDRONIC PIPING SPECIALTIES

SECTION 232123 - HYDRONIC PUMPS

SECTION 232213 – STEAM AND CONDENSATE HEATING PIPING

SECTION 232213 – STEAM AND CONDENSATE HEATING PIPING SPECIALTIES

SECTION 232513 - WATER TREATMENT FOR CLOSED-LOOP HYDRONIC SYSTEMS

SECTION 232533 - HVAC MAKEUP-WATER FILTRATION EQUIPMENT

SECTION 233113 - METAL DUCTS

SECTION 233300 - AIR DUCT ACCESSORIES

SECTION 233400 - HVAC FANS

SECTION 233713.23 - AIR REGISTERS AND GRILLES

SECTION 235113.11 - DRAFT CONTROL FANS

SECTION 235123 - GAS VENTS

SECTION 235216 - CONDENSING BOILERS

JULY 3, 2025 – ISSUED FOR BID

Table of Contents TOC - 3

DIVISION 26 - ELECTRICAL

SECTION 260400 - COMMON WORK RESULTS FOR ELECTRICAL

SECTION 260413 - COMMON SUBMITTAL REQUIREMENTS FOR ELECTRICAL

SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

SECTION 260523 - CONTROL-VOLTAGE ELECTRICAL POWER CABLES

SECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

SECTION 260529 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

SECTION 260533 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

SECTION 260544 - SLEEVES AND SLEEVE SEALS FOR ELECTRICAL RACEWAYS AND CABLING

SECTION 260553 - IDENTIFICATION FOR ELECTRICAL SYSTEMS

SECTION 260573 - POWER SYSTEM STUDIES

SECTION 260800 - COMMISSIONING OF ELECTRICAL SYSTEMS

SECTION 260913 - ELECTRICAL POWER MONITORING AND CONTROL

SECTION 260923 – LIGHTING CONTROL DEVICES

SECTION 262213 - LOW-VOLTAGE DISTRIBUTION TRANSFORMERS

SECTION 262300 – LOW-VOLTAGE SWITCHGEAR

SECTION 262413 - SWITCHBOARDS

END OF TABLE OF CONTENTS

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JULY 3, 2025 - ISSUED FOR BID

SECTION 024119 - SELECTIVE STRUCTURE DEMOLITION

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Demolition and removal of selected portions of building or structure.

2. Demolition and removal of selected site elements.

3. Salvage of existing items to be reused or recycled.

1.2 DEFINITIONS

A. Remove: Detach items from existing construction, including associated attachments, supports, bracing, etc., and legally dispose of them off-site unless indicated to be removed and salvaged or removed and reinstalled.

B. Remove and Salvage: Carefully detach from existing construction, in a manner to prevent damage, and deliver to Owner ready for reuse.

C. Remove and Reinstall: Detach items from existing construction, prepare for reuse, and reinstall where indicated.

D. Existing to Remain: Existing items of construction that are not to be permanently removed and that are not otherwise indicated to be removed, removed and salvaged, or removed and reinstalled.

1.3 MATERIALS OWNERSHIP

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

B. Historic items, relics, antiques, and similar objects including, but not limited to, cornerstones and their contents, commemorative plaques and tablets, and other items of interest or value to Owner that may be uncovered during demolition remain the property of Owner.

1. Carefully salvage in a manner to prevent damage and promptly return to Owner.

1.4 PREINSTALLATION MEETINGS

A. Predemolition Conference: Conduct conference at Project site.

1. Inspect and discuss condition of construction to be selectively demolished.

2. Review structural load limitations of existing structure.

3. Review and finalize selective demolition schedule and verify availability of materials, demolition personnel, equipment, and facilities needed to make progress and avoid delays.

4. Review requirements of work performed by other trades that rely on substrates exposed by selective demolition operations.

5. Review areas where existing construction is to remain and requires protection.

1.5 INFORMATIONAL SUBMITTALS

A. 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.

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

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. 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.

C. Inventory: Submit a list of items to be removed and salvaged and deliver to Owner prior to start of demolition.

D. Predemolition Photographs or Video: Submit before Work begins.

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E. 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 according to EPA regulations. Include name and address of technician and date refrigerant was recovered.

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

1.6 CLOSEOUT SUBMITTALS

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

1.7 QUALITY ASSURANCE

A. Refrigerant Recovery Technician Qualifications: Certified by an EPA-approved certification program.

1.8 FIELD CONDITIONS

A. Owner will occupy portions of building immediately adjacent to selective demolition area. Conduct selective demolition so Owner's operations will not be disrupted.

B. Conditions existing at time of inspection for bidding purpose will be maintained by Owner as far as practical.

C. Notify Architect of discrepancies between existing conditions and Drawings before proceeding with selective demolition.

D. Hazardous Materials: It is not expected that hazardous materials will be encountered in the Work.

1. Hazardous materials will be removed by Owner before start of the Work.

2. If suspected hazardous materials are encountered, do not disturb; immediately notify Architect and

Owner. Hazardous materials will be removed by Owner under a separate contract.

E. Storage or sale of removed items or materials on-site is not permitted.

F. Utility Service: Maintain existing utilities indicated to remain in service and protect them against damage during selective demolition operations.

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

1.9 WARRANTY

A. Notify warrantor on completion of selective demolition, and obtain documentation verifying that existing system has been inspected and warranty remains in effect. Submit documentation at Project closeout.

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/ASSE A10.6 and NFPA 241.

PART 3 - EXECUTION

3.1 EXAMINATION

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

B. Review record documents of existing construction provided by Owner. Owner does not guarantee that existing conditions are same as those indicated in record documents.

C. Survey existing conditions and correlate with requirements indicated to determine extent of selective demolition required.

D. When unanticipated mechanical, electrical, or structural elements that conflict with intended function or design are encountered, investigate and measure the nature and extent of conflict. Promptly submit a written report to Architect.

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E. Engage a professional engineer to perform an engineering survey of condition of building to determine whether removing any element might result in structural deficiency or unplanned collapse of any portion of structure or adjacent structures during selective building demolition operations.

1. Perform surveys as the Work progresses to detect hazards resulting from selective demolition activities.

2. Steel Tendons: Locate tensioned steel tendons and include recommendations for de-tensioning.

F. Survey of Existing Conditions: Record existing conditions by use of measured drawings preconstruction photographs .

1. Comply with requirements specified in Section 013233 "Photographic Documentation."

2. Inventory and record the condition of items to be removed and salvaged. Provide photographs of conditions that might be misconstrued as damage caused by salvage operations.

3. Before selective demolition or removal of existing building elements that will be reproduced or duplicated in final Work, make permanent record of measurements, materials, and construction details required to make exact reproduction.

3.2 UTILITY SERVICES AND MECHANICAL/ELECTRICAL SYSTEMS

A. Existing Services/Systems to Remain: Maintain services/systems indicated to remain and protect them against damage.

1. Comply with requirements for existing services/systems interruptions specified in Section 011000

"Summary."

B. Existing Services/Systems to Be Removed, Relocated, or Abandoned: Locate, identify, disconnect, and seal or cap off indicated utility services and mechanical/electrical systems serving areas to be selectively demolished.

1. If services/systems are required to be removed, relocated, or abandoned, provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to other parts of building.

2. Disconnect, demolish, and remove fire-suppression systems, plumbing, and HVAC systems, equipment, and components indicated 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. Equipment to Be Removed: Disconnect and cap services and remove equipment.

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

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

C. Refrigerant: Remove refrigerant from mechanical equipment to be selectively demolished according to 40 CFR 82 and regulations of authorities having jurisdiction.

3.3 PREPARATION

A. 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. Comply with requirements for access and protection specified in Section 015000 "Temporary

Facilities and Controls."

B. Temporary Facilities: 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. Temporary Shoring: 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.

SELECTIVE STRUCTURE DEMOLITION 024119 - 3

JULY 3, 2025 - ISSUED FOR BID

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

3.4 SELECTIVE DEMOLITION, GENERAL

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

1. Proceed with selective demolition systematically, from higher to lower level. Complete selective demolition operations above each floor or tier before disturbing supporting members on the next lower level.

2. 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, to minimize disturbance of adjacent surfaces. Temporarily cover openings to remain.

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

4. 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 fire watch and portable fire-suppression devices during 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.

9. Dispose of demolished items and materials promptly. Comply with requirements in Section

017419 "Construction Waste Management and Disposal."

B. Reuse of Building Elements: Project has been designed to result in end-of-Project rates for reuse of building elements as follows. Do not demolish building elements beyond what is indicated on Drawings without Architect's approval.

C. Removed and Salvaged Items:

1. Clean salvaged items.

2. Pack or crate items after cleaning. Identify contents of containers.

3. Store items in a secure area until delivery to Owner.

4. Transport items to Owner's storage area designated by Owner.

5. Protect items from damage during transport and storage.

D. Removed and Reinstalled Items:

1. Clean and repair items to functional condition adequate for intended reuse.

2. Pack or crate items after cleaning and repairing. Identify contents of containers.

3. Protect items from damage during transport and storage.

4. Reinstall items in locations indicated. Comply with installation requirements for new materials and equipment. Provide connections, supports, and miscellaneous materials necessary to make item functional for use indicated.

E. 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 during selective demolition and cleaned and reinstalled in their original locations after selective demolition operations are complete.

3.5 SELECTIVE DEMOLITION PROCEDURES FOR SPECIFIC MATERIALS

A. Concrete: Demolish in small sections. Using power-driven saw, cut concrete to a depth of at least 3/4 inch (19 mm) 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.

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

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

SELECTIVE STRUCTURE DEMOLITION 024119 - 4

JULY 3, 2025 - ISSUED FOR BID

D. Resilient Floor Coverings: Remove floor coverings and adhesive according to recommendations in RFCI's "Recommended Work Practices for the Removal of Resilient Floor Coverings." Do not use methods requiring solvent-based adhesive strippers.

3.6 DISPOSAL OF DEMOLISHED MATERIALS

A. General: Except for items or materials indicated to be recycled, reused, salvaged, reinstalled, or otherwise indicated to remain Owner's property, remove demolished materials from Project site and legally dispose of them in an EPA-approved landfill.

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. Remove debris from elevated portions of building by chute, hoist, or other device that will convey debris to grade level in a controlled descent.

4. Comply with requirements specified in Section 017419 "Construction Waste Management and

Disposal."

B. Burning: Do not burn demolished materials.

C. Disposal: Transport demolished materials off Owner's property and legally dispose of them.

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

SELECTIVE STRUCTURE DEMOLITION 024119 - 5

SMITHGROUP 00015749 DISTRICT OF COLUMBIA COURTS

JULY 3, 2025 – ISSUED FOR BID

CAST-IN-PLACE CONCRETE 03 30 00 – 1

SECTION 033000 – CAST IN PLACE CONCRETE

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to the work of this Section.

1.2 SUMMARY

A. Section includes but is not limited to the following as shown on the drawings and as specified herein:

1. Equipment pads as required.

2. Furnishing and installing all required anchors and inserts.

3. Supply, fabricate and place all required reinforcing bars, mesh and other reinforcement for concrete where shown, called for, and/or required complete with proper supporting devices.

4. Finishing of all concrete work as hereinafter specified.

5. Curing and protection of all concrete work.

6. All other work and materials as may be reasonably inferred and needed to make the work of this section complete.

1.3 SUBMITTALS

A. Product Data: Submit data for proprietary materials and items, including the following:

1. Reinforcement

2. Admixtures

3. Patching compounds

4. Mechanical splice couplers.

5. Others items as requested by Architect.

B. Shop Drawings; Reinforcement: Submit original shop drawings for fabrication, bending, and placement of con-crete reinforcement. Comply with ACI 315 "Details and Detailing of Concrete Reinforcement" showing bar sizes, lengths, materials, grades, bar schedules, stirrup spacing, bent bar diagrams, bar arrangement, location of splices, lengths of lap splices, details of mechanical splice couplers, and supports for concrete reinforce-ment. Include special reinforcement required for openings through concrete structures. The shop drawings shall be prepared only by competent detailers, checked by the contractor prior to submission.

C. Scaling of the Architect’s or Engineer of Record’s drawings is not permitted. This applies to hard paper, electronic, and all other versions.

D. Laboratory Test Reports: Submit laboratory test reports for concrete materials, mix design test and microwave test.

E. Material Certificates: Provide materials certificates in lieu of materials laboratory test reports when permitted by Architect. Manufacturer and Contractor, certifying that each material item complies with, or exceeds, spec-ified requirements shall sign material certificates. Provide certification from admixture manufacturers that chloride content complies with specification requirements.

F. Certification that pozzolanic materials conforms to ASTM C 618-01 (noting class C or class F), ASTM C 989 or

ASTM C1240.

CAST-IN-PLACE CONCRETE 03 30 00 – 2

G. Certified recycled steel content. Provide cut sheets clearly indicating whether the rebar used meets the mini-mums for post-consumer OR post-industrial recycled contents. Or, if cut sheets are not available, obtain a written affidavit from the manufacturer stating the recycled content percentage and if the recycled content is post-consumer or post-industrial.

H. Formwork: Specify whether reusable, permanent, salvaged or new wood forms are to be used.

I. Recycled Aggregate: Provide laboratory reports indicating that aggregate conforms to ASTM C33 for structural concrete or ASTM D1241-00 for sub-base material. Provide cut sheets clearly indicating the source, total weight and volume of the recycled aggregate. If aggregate provided is a mix of virgin and recycled aggregates obtain a written affidavit from the manufacturer stating the recycled content percentage

J. VOC content for curing compounds, sealants and release agents: Provide a cut sheet and a Material Safety Data Sheet (MSDS) for each curing compound, sealant, hardener and release agent used highlighting VOC contents. VOC content must be less than or equal to limits stated under “PRODUCTS”.

1.4 QUALITY ASSURANCE

A. Installer Qualifications: A qualified installer who employs on Project personnel qualified as ACI-certified Flatwork Technician and Finisher and a supervisor who is an ACI-certified Concrete Flatwork Technician.

B. 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.

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

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

1. District of Columbia Building Code, Latest Edition

2. ACI 117 “Standard Specifications for Tolerances for Concrete Construction and Materials and Com-mentary.”

3. ACI 211.1 “Standard Practice for Selecting Proportions for Normal, Heavyweight and mass concrete.”

4. ACI 211.2, “Standard Practice for Selecting Proportions for Structural Lightweight Concrete.”

5. ACI 214R, “Evaluation of Strength Test Results of Concrete.”

6. ACI 232.2R, “Use of Fly Ash in Concrete.”

7. ACI 233R, “Guide to Use of Slag Cement in Concrete and Mortar.”

8. ACI 234, “Guide for the Use of Silica Fume in Concrete.”

9. ACI 301 “Specifications for Structural Concrete.”

10. ACI 302.1R “Guide for Concrete Floor and Slab Construction.”

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

12. ACI 305R “Hot Weather Concreting.”

13. ACI 306R-10 “Guide to Cold Weather Concreting.”

14. ACI 308.1 “Standard Specification for Curing Concrete.”

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

16. ACI 311.4R, “Guide for Concrete Inspections.”

17. ACI 315, “Details and Detailing of Concrete Reinforcement.”

18. ACI 318 “Building Code Requirements for Structural Concrete and Commentary.”

19. ACI 347 “Guide to Formwork of Concrete.”

20. Concrete Reinforcing Steel Institute, (CRSI) “Manual of Standard Practice.”

21. CRSI-WCRSI, “Placing Reinforcing Bars.”

22. AWS D1.4, “Structural Welding Code Reinforcing Steel.”

23. The ACI Field Reference Manual, SP-15 shall be kept at the job site, and the practices set forth therein shall be strictly adhered to.

CAST-IN-PLACE CONCRETE 03 30 00 – 3

24. ASTM Standards as applicable in the building code of the local jurisdiction and as noted in this speci-fication.

25. AASHTO T 318, “Standard Method of Test for Water Content of Freshly Mixed Concrete Using Micro-wave Oven Drying.”

E. Concrete Testing Service: Owner will engage a testing laboratory acceptable to Architect and Engineer of Record to perform material evaluation tests and to design concrete mixes.

F. Materials and installed work may require testing and retesting at anytime during progress of work. Tests, including retesting of rejected materials for installed work, shall be done at Contractor's expense.

1.5 PROJECT CONDITIONS

A. The Contractor, before commencing work, shall examine all adjoining work on which this work is in any way dependent for proper installation and workmanship according to the intent of this specification, and shall report to the Architect or Engineer of Record any condition which prevents this contractor from performing first class work.

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

C. Provide all barricades and safeguards at all pits, holes, shaft and stairway openings, etc., to prevent injury to workmen and others within and about the premises. Also provide all safeguards as required by the Building Code, OSHA, or any other departments having jurisdiction. Take full responsibility for all safety precautions and methods.

D. Procedure of Work: The contractor shall keep themself constantly informed as to the progress of the work in the field, materials and workers ready to start work immediately when conditions of preceding work are avail-able or ready, wholly or in part, so as not to delay the progress of building work or to interfere with the progress of work of other contractors, and in any event the contractor shall, within 24 hours after notice from the Owner, proceed with such work as directed to maintain the uninterrupted progress of the work.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Steel Reinforcement: Deliver, store, and handle steel reinforcement to prevent bending and damage. Avoid damaging coatings on steel reinforcement.

B. Waterstops: Store waterstops under cover to protect from moisture, sunlight, dirt, oil, and other contaminants.

PART 2 - PRODUCTS

2.1 REINFORCING MATERIALS

A. Reinforcing Bars: ASTM A615/A615M, Grade 60 deformed. All reinforcing bars shall be Grade 60 unless oth-erwise noted. Provide Grade 75, Grade 80, or Grade 100 reinforcing bars where indicated on the contract documents.

B. Mechanical Splice Couplers: ACI 318/ACI 318M, same material of reinforcing bar being spliced. Provide me-chanical couplers as an alternate to standard tension lap splices where indicated on the contract documents and in areas of rebar congestion. A mechanical splice coupler shall develop in tension or compression, as required, at least 1.25 times the yield strength of the bar being spliced.

C. Steel Wire and Welded Wire Reinforcement: ASTM A 1064. Galvanized at exterior locations, conditions per-manently exposed to weather and/or water, and where noted on drawings (plan and/or sections).

CAST-IN-PLACE CONCRETE 03 30 00 – 4

D. Cement: Portland cement (ASTM C 150, Types I, II, or I/II) or Portland limestone cement (ASTM C 595). Total percentage of Portland Cement is NOT to exceed 75% of the cementitious content of each mix, except mixes assigned to exposure class F3. Use one brand of cement throughout project, unless otherwise acceptable to Architect. Provide supplementary cementitious materials in mixes per sections below.

a. Fly Ash: Cast-in-place concrete shall incorporate fly ash as a replacement for at least 25% (by weight) of the Portland cement. All design mixes must be reviewed and approved by the Engi-neer of Record. Where concrete is assigned to exposure class F3, limit the replacement of Portland cement with fly ash (by weight) to 25% max.

b. Ground Granulated Blast Furnace Slag (GGBF): Cast-in-place concrete shall incorporate GGBF as a replacement for at least 40% (by weight) of the Portland cement. All design mixes must be reviewed and approved by the Engineer of Record. Where concrete is assigned to exposure class F3, limit the replacement of Portland cement with GGBF slag (by weight) to 50% max.

c. Post-Consumer Recycled Ground Glass Pozzolan (GGP): Cast-in-place concrete shall incor-porate GGP as a replacement for at least 25% (by weight) of the Portland cement. All design mixes must be reviewed and approved by the Engineer of Record.

d. Pozzolans and Slags: These must be completely accounted for in the design mix. Mix design must meet minimum design requirements set in the contract documents. Additional admixtures may be required to meet early strength requirements and alternative cementitious material goals. If a "blended cement" is used which already contains a certain percentage of Pozzolans or Slags this content may offset or entirely satisfy the minimum percentage required.

1) Coal Fly Ash: ASTM C 618 (Class C or Class F): ASTM C 618 (Note: Class F fly Ash will require higher amounts or air entraining ad-mixtures than class C).

2) Blast Furnace Slag: ASTM C989

3) Ground Glass Pozzolan: ASTM C1866

4) Silica Fume: ASTM C 1240

5) Rice Hull (or “husk”) Ash: ASTM C 618 Blended hydraulic cement, as defined by ASTM

C 595 or ASTM C 1157

E. Normal Weight Aggregates: ASTM C 33, and as herein specified. Provide aggregates from a single source for exposed concrete.

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

2. Normal weight Fine Aggregate: washed, inert, natural or manufactured or combination thereof, sand conforming ASTM C33 gradation.

3. Normal weight Coarse Aggregate: well graded crushed stone or washed gravel conforming to ASTM C33, sizes 57 for foundations and 67 for slabs and structure.

a. Recycled crushed concrete aggregate in concrete mixes is only to be used with approval of Engineer of Record. Recycled aggregate shall be used only as a substitute for coarse aggre-gate and must also be washed and well-graded, conforming to ASTM C33.

b. For sub-base, slabs on grade and non-structural applications and Recycled Aggregate Materi-als are NOT required to meet the ASTM C 33 standard. In addition to concrete rubble, glass, porcelain, and tire chips can be used as filler material. Any inert material conforming to ASTM D1241 is acceptable for the applications described in this paragraph.

F. Water: Free from oils, acids, alkali, organic matter and other deleterious material to conform to ASTM C94.

ASTM C94 for gray water use in the production of ready mixed concrete per approval by the Engineer of Record.

G. Air Entraining Admixture: ASTM C 260.

1. Liquid air entrainment: Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. “Air Mix” Euclid Chemical Co.

b. “AEA-92” Euclid Chemical Co.

CAST-IN-PLACE CONCRETE 03 30 00 – 5

c. “Darex AEA” GCP Applied Technologies

d. “MasterAir AE200” Master Builders Solutions

H. Water-Reducing Admixture: ASTM C 494.

1. Products: Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. “MasterPolyheed 997” Master Builders Solutions

b. “Eucon MR” Euclid Chemical Co.

c. “WRDA 64” GCP Applied Technologies

I. Prohibited Admixtures: Calcium chloride, thyocyanates or admixtures containing more than 0.05 percent chlo-ride ions are not permitted.

J. Certification: Written conformance to the above-mentioned requirements and the chloride ion content of ad-mixtures will be required from the admixture manufacturer prior to mix design review by the Engineer of Rec-ord.

K. Contractor will be required to provide information demonstrating successful use in prior placement involving all admixtures.

2.2 GROUT

A. Non-Shrink, Non-Metallic Grout: The non-shrink grout shall be a factory pre-mixed grout and shall conform to ASTM C1107, "Standard Specification for Packaged Dry, Hydraulic-Cement Grout (Non-Shrink)." In addition, the grout manufacturer shall furnish test data from an independent laboratory indicating that the grout when placed at a fluid consistency shall achieve 95% bearing under a 4' x 4' base plate.

1. Products: Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. "NS Grout" Euclid Chemical Co.

b. "Five Star Grout" Five Star

c. "Masterflow 713" Sika Chemical Co.

B. High Flow Grout: Where high fluidity and/or increased placing time is required, use high flow grout. The factory pre-mixed grout shall conform to ASTM C1107, "Standard Specification for Packages Dry, Hydraulic-Cement Grout (Non-shrink)." In addition, the grout manufacturer shall furnish test data from an independent laboratory indicating that the grout when placed at a fluid consistency shall achieve 95% bearing under a 18" x 36" base plate.

1. Products: Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. "Hi-Flow Grout" Euclid Chemical Co.

b. "Masterflow 928" Sika Chemical Co.

c. “Five Star Fluid Grout 100” Five Star

2.3 RELATED MATERIALS

A. Absorptive Cover: Burlap cloth made from jute or kenaf, weighing approximately 9 oz. per sq. yd., complying with AASHTO M 182, Class 2.

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

CAST-IN-PLACE CONCRETE 03 30 00 – 6

1. Products: Subject to compliance with requirements, provide one of the following:

a. Waterproof paper

b. Polyethylene film

c. Polyethylene-coated burlap

C. Curing Compounds: The compound shall conform to ASTM C 309. Limit VOC content to 130 g/L. Use water-based curing compound. For surfaces receiving both a curing compound and additional flooring, verify that the curing compound and additional flooring are compatible.

1. Products: Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. “SealTight 1100” W.R. Meadows

b. “Kurez W VOX” Euclid Chemical Co.

D. Curing & Sealing Compounds: Only specify for slabs that will remain exposed, i.e. will not receive additional flooring. The compound shall conform to ASTM C1315. Limit VOC content to 130 g/L. Use water-based curing compound.

1. Products: Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. “Super Diamond Clear VOX” Euclid Chemical Co.

b. “VOCOMP-25” W.R. Meadows

E. Curing, Sealing, & Hardening Compounds: For use on concrete surfaces that will remain exposed. Slabs that will receive additional flooring do not require sealing or hardening. Sealers and hardeners must not yellow under ultra violet light after 500 hours of test in accordance with and have a maximum moisture loss of 0.039 grams per sq. cm. when applied at a coverage rate of 250 sq. ft. per gallon. Limit VOC content to 130 g/L. Use water- or vegetable-based product.

1. Products: Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. “Kure-N-Harden” BASF

F. For concrete floors subjected to heavy vehicular traffic use a Liquid Sealer/Densifier: The product must be a high performance, deeply penetrating concrete densifier conforming to ASTMC836; odorless, colorless, VOC

- compliant, non-yellowing siliconate based solution designed to harden, dustproof and protect and to resist black rubber tire marks on concrete surfaces. The compound must contain a minimum of 20% solids content of which 50% is siliconate

G. Evaporation Retardant:

1. Products Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. "Eucobar" Euclid Chemical Co.

b. "MasterKure ER 50" Master Builders Solutions

H. Certify that all curing compounds, sealers and hardeners are compatible with all adhesive products intended for attaching co-lateral floor material. In conformance with ASTM F 710, coordination with flooring manufac-turer is required to insure concrete coatings will not obstruct the bond between the concrete and the adhesive.

Insure coatings and adhesives are “benignly compatible” -- in other words, do not combine substances whose constituents are reactive. Reactivity releases VOCs and /or other toxic fumes.

CAST-IN-PLACE CONCRETE 03 30 00 – 7

I. Bonding Admixture: The compound shall be a latex, non-rewettable type.

1. Products: Subject to compliance with requirements, provide one of the following or equal approved by Engineer of Record:

a. "Flex-Con" Euclid Chemical Co.

b. "SBR Latex" Euclid Chemical Co.

J. High Strength Polymer Repair Mortar: For form and pouring or large horizontal repairs, provide the flowable on-part, high strength repair mortar.

1. Products: subject to compliance with requirements, provide the following or equal approved by Engineer of Record:

a. "Eucocrete or EucoRepair SCC" Euclid Chemical Co.

b. "Euco Speed MP" (Cold Weather) Euclid Chemical Co.

c. “Emaco R” Master Builders Solutions

K. Bonding Agent: ASTM C 1059/C 1059M, Type II, non-redispersible, acrylic emulsion or styrene butadiene.

a. “Daraweld C” GCP Applied Technologies

b. “Acrylic Bonding Agent J40” Dayton Superior

c. Eucoweld 2.0 Euclid Chemical Co.

L. Epoxy Bonding Adhesive: ASTM C 881, two-component epoxy resin, capable of humid curing and bonding to damp surfaces, of class suitable for application temperature and of grade to suit requirements, and as follows:

1. Type IV for bonding hardened concrete to hardened concrete, and Type V for bonding freshly mixed concrete to hardened concrete.

M. Water: Potable.

2.4 PROPORTIONING AND DESIGN OF MIXES

A. Preparation of Design Mixes

1. All mix designs shall be proportioned in accordance with Section 26.4.3.1(b) of ACI 318 and prepared by a licensed testing laboratory approved by the owner, but paid for by the contractor. Submit mix designs on each class of concrete for review.

2. If previously used mixes are submitted, all materials shall be from the same sources and with the same brand names as the previously utilized mix.

3. If trial batches are used, the mix design shall be prepared by an independent testing laboratory and shall achieve an average compressive strength 1200 psi higher than the specified strength. This over-design shall be increased to 1.10f’c+700 psi when concrete strengths greater than 5000 psi are used.

4. The proposed mix designs shall be accompanied by complete standard deviation analysis or trial mix-ture test data.

B. Submit each proposed mix to the Architect and Structural Engineer for review at least 5 days prior to the pre-concrete conference. Do not begin concrete production until Architect and Engineer of Record has reviewed and approved mixes.

1. Submit Test reports for any pozzolans or slags indicating compliance with ASTM C 618, ASTM C 989, or ASTM C1866 respectively.

CAST-IN-PLACE CONCRETE 03 30 00 – 8

2. Provide cut sheets clearly indicating the percentages of pozzolans or slags used in the mix design as replacement for Portland cement. Or, if cut sheets are not available, obtain a written affidavit from the manufacturer stating the percentage.

3. Test reports for recycled aggregate indicating compliance with ASTM C 33. Provide cut sheets clearly indicating the percentage of aggregates used that are recycled. Or, if cut sheets are not available, obtain a written affidavit from the manufacturer stating the recycled content percentage and source or sources of the material.

4. Provide cut sheets clearly indicating the percentage of sub-base and filler aggregate materials that are recycled. Or, if cut sheets are not available, obtain a written affidavit from the manufacturer stating the recycled content percentage and source or sources of the material.

C. Design mixes to provide concrete with strength as indicated on drawings and schedules.

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

E. Admixtures:

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

2. Use non-corrosive, non-chloride accelerating admixture in concrete slabs placed at ambient tempera-tures below 50F (10C).

3. Use high-range water-reducing admixture in pumped concrete, architectural concrete, parking struc-ture slabs, fiber concrete, concrete required to be watertight, concrete with ultimate strength of 5,000 psi or more, and concrete with water/cement ratios below 0.50.

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

F. Water-Cement Ratio: Provide concrete for following conditions with maximum water-cement (W/C) ratios as follows:

1. Concrete for architecturally exposed structural elements or architecturally exposed surfaces: W/C 0.40.

2. All other concrete: no maximum W/C ratio.

3. Refer to the concrete mix design table in the structural drawings for other W/C ratio requirements based on exposure class, element type, etc.

4. Refer to the requirements for concrete by exposure class in ACI 318 for balance of info related to maximum W/C ratios, minimum f’c values, and additional requirements.

G. Slump Limits: Proportion and design mixes to result in concrete slump at point of placement as follows:

1. Ramp slabs and sloping surfaces: Not more than 3".

2. Reinforced foundation systems, including mud slabs below hydrostatic slabs: Not less than 1" and not more than 3".

3. Concrete containing HRWR admixture (superplasticizer): Not more than 9" unless otherwise approved by the architect.

4. Other Concrete: Not less than 1" or more than 4".

H. Chloride Ion Level: Chloride ion content shall be tested by the laboratory making the trial mixes. The total chloride ion content of the mix including all constituents shall not exceed the limitations set forth in Table

19.3.2.1 of ACI 318.

2.5 CONCRETE MIXING

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

CAST-IN-PLACE CONCRETE 03 30 00 – 9

B. Provide batch ticket for each batch discharged and used in work, indicating project identification name and number, date, mix type, mix time, quantity, and amount of water introduced.

C. During hot weather, or under conditions contributing to rapid setting of concrete, a shorter mixing time than specified in ASTM C 94 may be required. When air temperature is between 85F (30C) and 90F (32C), reduce maximum mixing and delivery time from 1-1/2 hours to 75 minutes, and when air temperature is above

90F (32C), reduce maximum mixing and delivery time to 60 minutes.

D. No water shall be added after mixing to concrete containing HRWR (Superplasticizer). If loss of slump occurs, the concrete treated with HRWR may be redosed as long as a "flash set" has not occurred. Redosage proce-dures must be discussed and approved by the Engineer of Record and the manufacturer.

PART 3 - EXECUTION

3.1 GENERAL

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

3.2 INSPECTION

A. Examine all work prepared by others to receive work of this section and report any defects affecting installation to the Contractor for correction. Commencement of work will be construed as complete acceptance of pre-paratory work by others.

3.3 CONCRETE

A. Concrete shall develop the minimum compressive strengths shown on drawings at 28 days when sampled and tested in accordance with ASTM C 31 and C 39 with the maximum slump in accordance with the approved mix design.

B. Concrete shall be in accordance with the requirements and specifications of "Building Code Requirements for Structural Concrete" as modified by the building code noted above.

C. Fly Ash Concrete & Slag Concrete: Concrete mixes containing high volumes of fly ash or Slag have slower set times and may take up to 56 days to reach full strength. The Engineer of Record, agency responsible for concrete mix design, the architect and the concrete subcontractor must coordinate to ensure that the form stripping schedule is consistent with the ability of the structure to support itself and all imposed construction loads.

3.4 INSTALLATION TOLERANCES

A. Comply with ACI 117

3.5 INSTALLATION OF EMBEDDED ITEMS

A. General: Set and build into work anchorage devices and other embedded items required for other work that is attached to, or supported by, cast-in-place concrete. Use setting drawings, diagrams, instructions and di-rections provided by suppliers of items to be attached thereto.

CAST-IN-PLACE CONCRETE 03 30 00 – 10

3.6 CONCRETE PLACEMENT

A. Ready-mix concrete shall comply with the requirements of ASTM C 94 and ACI 304. All plant and transporting equipment shall comply with the concrete plant standards and truck mixer and agitator standards of the Na-tional Ready Mix Concrete Association.

B. Cold weather mixing procedures shall be submitted to the architect for approval.

C. Placement of structural concrete with a least dimension greater than or equal to 4 feet shall be considered “mass concrete” per ACI definition. Contractor shall adhere to mass concrete procedures and recommenda-tions of ACI 301 and ACI 211.

D. Notify Architect and Owner’s Inspector at least 36 hours (1 1/2 regular working days) before each pour so that forms and reinforcing may be examined. Do not place concrete until inspection has been made or waived.

E. Preplacement Inspection: Before placing concrete, inspect and complete formwork installation, reinforcing steel, and items to be embedded or cast-in. Notify other crafts to permit installation of their work; cooperate with other trades in setting such work. Moisten wood forms immediately before placing concrete where form coatings are not used.

1. Apply temporary protective covering to lower 2' of finished walls adjacent to poured floor slabs and similar conditions, and guard against spattering during placement.

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

1. Deposit concrete continuously or in layers of such thickness that no concrete will be placed on concrete which has hardened sufficiently to cause the formation of seams or planes of weakness. If a section cannot be placed continuously, provide construction joints as herein specified. Deposit concrete as nearly as practicable to its final location to avoid segregation.

G. Placing Concrete in Forms: Deposit concrete in forms in…