Attchmt_7_Specifications_Volume_2_of_2.pdf

VOLUME 2 OF 2

LEWIS AND CLARK

NATIONAL HISTORIC SITE

Solicitation no. 140P8321R0002, Attachment no. 7

RENOVATE VISITOR CENTER, LEWI

FINAL

CONSTRUCTION DOCUMENTS

NATIONAL PARK SERVICE

PACIFIC WEST REGION

August 14, 2020

VOLUME 2 OF 2

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TABLE OF CONTENTS

DIVISION, SECTION & PARAGRAPH NUMBERING

Numbering and lettering of sections and paragraphs in this Project Manual are merely for identification.

Sections included are listed in this Table of Contents together with the number of pages in each section.

The Contractor shall check their copies of the Project Manual against this Table of Contents and confirm there are no missing pages or sections.

Number Title No. of Pages

DIVISION 02 – EXISTING CONDITIONS

02 41 00 Demolition & Abandonment

02 41 19 Selective Demolition

DIVISION 03 – CONCRETE

03 00 00 Cast-In-Place Concrete

03 30 01 Concrete Floor Slabs

03 30 02 Concrete Slab Preparation

03 54 13 Gypsum Cement Underlayment

DIVISION 05 – METALS

05 12 00 Structural Steel Framing

05 50 00 Metal Fabrications

DIVISION 06 – WOOD, PLASTICS, & COMPOSITES

06 10 00 Rough Carpentry

06 12 00 Structural Insulated Panels

06 15 16 Wood Roof Decking

06 16 00 Sheathing

06 20 13 Exterior Finish Carpentry

06 20 23 Interior Finish Carpentry

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DIVISION 07 – THERMAL & MOISTURE PROTECTION

07 01 50.19 Preparation for Reroofing

07 11 13 Bituminous Dampproofing

07 14 16 Cold Fluid-Applied Waterproofing

07 21 00 Thermal Insulation

07 25 00 Weather Barriers

07 41 13.16 Standing-Seam Metal Roof Panels

07 62 00 Sheet Metal Flashing & Trim

07 90 00 Joint Sealers

DIVISION 08 – OPENINGS

08 12 13 Hollow Metal Frames

08 14 16 Flush Wood Doors

08 31 13 Access Doors & Frames

08 41 13 Aluminum-Framed Entrances & Store Fronts

08 42 13 Aluminum-Framed Entrances

08 52 00 Wood Windows

08 71 00 Door Hardware

08 80 00 Glazing

08 83 00 Mirrors

DIVISION 09 – FINISHES

09 29 00 Gypsum Board

09 30 13 Ceramic Tiling

09 54 26 Acoustic Wood Ceiling Planks

09 68 00 Carpeting

09 74 13 Acoustic Wood Wall Panels

09 90 00 Paints & Coatings

DIVISION 10 – SPECIALTIES

10 28 00 Toilet & Miscellaneous Accessories

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DIVISION 22 – PLUMBING

22 00 00 Plumbing

22 01 00 Plumbing: General Requirements

22 05 00 Common Work Results for Plumbing

22 05 23 General Duty Valves for Plumbing Piping

22 02 29 Hangers & Supports for Plumbing Piping & Equipment

22 05 48 Vibration & Seismic Controls for Pluming Piping & Equipment

22 05 53 Identification for Pluming Piping & Equipment

22 11 16 Domestic Water Piping

22 13 13 Facility Sanitary Sewers

22 13 16 Sanitary Waste & Vent Piping

22 13 19 Sanitary Waste Piping Specialties

22 33 00 Electric Domestic Water Heaters

22 40 00 Plumbing Fixtures

DIVISION 23 – HEATING, VENTILATING, & AIR CONDITIONING (HVAC)

23 05 00 Common Results for HVAC

23 05 19 Meters & Gages for HVAC Piping

23 05 23 General Duty Valves for HVAC Piping

23 05 29 Hangers & Supports for HVAC Piping & Equipment

23 05 48 Vibration & Seismic Controls for HVAC

23 05 53 Identification for HVAC Piping & Equipment

23 05 93 Testing, Adjusting, & Balancing for HVAC

23 07 00 HVAC Insulation

23 09 23 Direct Digital Control Systems for HVAC

23 09 23.11 Control Valves

23 09 23.12 Control Dampers

23 11 23 Facility Natural Gas Piping

23 21 13 Hydronic Piping

23 21 16 Hydronic Piping Specialties

23 21 23 Hydronic Pumps

23 31 13 Metal Ducts

23 33 00 Air Duct Accessories

23 34 00 HVAC Fans

23 37 00 Air Outlets & Inlets

23 52 16 Condensing Boilers

23 73 00 Indoor Central-Station Air Handling Units

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DIVISION 26 – ELECTRICAL

26 00 00 Electrical General Requirements

26 05 00 Common Work Results for Electrical

26 05 19 Low Voltage Electrical Power Conductors & Cables

26 05 26 Grounding & Bonding for Electrical Systems

26 05 29 Hangers & Supports for Electrical Systems

26 05 33 Raceway & Boxes for Electrical Systems

26 05 48 Seismic Requirements for Electrical Systems

26 05 53 Identification for Electrical Systems

26 09 23 Lighting Control Devices

26 24 16 Panelboards

26 27 26 Wiring Devices

26 28 13 Fuses

26 28 16 Enclosed Switches & Circuit Breakers

26 43 13 Surge Protection for Low-Voltage Electrical Power Circuits

26 51 00 Interior Lighting

26 56 00 Exterior Lighting

DIVISION 31 – EARTHWORK

31 10 00 Site Clearing

31 22 13 Rough Grading

31 23 00 Excavation & Fill

31 23 17 Watering

31 23 33.2 Restoration of Surfaces

DIVISION 32 – EXTERIOR IMPROVMENTS

32 11 23 Aggregate Base Course

32 13 13.06 Portland Cement Concrete

32 15 00 Restoration of Surfaces

DIVISION 02

EXISTING CONDITIONS

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DEMOLITION & ABANDONMENT

SECTION 02 41 00

PART 1 - GENERAL

1.1 DESCRIPTIONS

A. The work of this Section includes all demolition, removal, salvage and disposal of existing structures, piping, and materials.

1.2 SUBMITTALS

A. As specified in Submittals – Section 01 33 23

B. Certifications and Testing consistent with Submittals – Section 01 33 23 and including:

C. Permit for transport and disposal of debris.

D. Proposed method of demolition, proposed schedule, sequence of work, and proposed method and schedule for removing, maintaining, and reestablishing facilities and utilities.

1.3 SITE CONDITIONS

A. Protection

1. Erect barriers, fences, guardrails, enclosures, chutes, and shoring around all construction activities to protect personnel, structures, and utilities remaining intact.

2. Protect designated trees and plants from damage.

B. Maintaining Traffic

1. Assure minimum interference with roads, streets, driveways, sidewalks, and adjacent facilities.

C. Utility Lines and Services

1. Keep existing structures to remain and adjacent structures intact and in operation.

2. Obtain permission to disrupt any utilities or services temporarily or permanently.

3. Coordinate with utility company for disconnecting existing service on structures to be demolished.

4. Coordinate with Park for services to be disconnected and schedule with utility company.

Schedule and coordinate with Park and utility company far enough in advance so as to not delay work.

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5. Prior to demolishing a utility or facility, notify the Project Manager three (3) days in advance, and plan the demolition such that the demolition will not create an unsafe condition or interfere with ongoing operations.

6. Where demolition must occur in such a sequence that a portion of this facility must remain operational, coordinate this aspect with the Project Manager.

7. Do not burn waste material. All organic material removed from the construction area must be properly chipped and recycled or removed from the Park and properly disposed.

8. Provide adequate fire protection. Keep area clear of hazardous substances and debris.

9. Maintain access to exits at all time.

10. Separate demolition area from building to remain with temporary dustproof partitions.

11. Provide temporary weather protection to prevent damage to structure and interior area.

12. Explosives are not permitted.

PART 2 - PRODUCTS

2.1 INSTALLATION/APPLICATION EQUIPMENT

A. An existing one and one-half (1½) story barn structure and associated concrete pad is to be demolished as part of this contract. The first floor area of the barn is approximately 1,352SF.

The area of the concrete pad is approximately one thousand, one hundred twenty-one (1,121) sf.

1. The barn is constructed of concrete footings; and stem walls extending approximately eighteen inches (18”) above grade. The ground floor is a concrete slab-on- grade the depth and width of which is unknown. The exterior walls consist of painted wood siding over 4x wood posts at forty-eight inches (48”) o.c with painted wood interior panels. The upper floor structure (loft) assembly is constructed of wood plank decking over dimensional wood joists and wood plank ceiling. The roof structure consists of pre-fabricated roofing over asphalt saturated paper over wood plank decking, dimensional wood joists and wood plank ceilings.

2. Native soils, stone, gravel, or sand, free from debris, frozen materials, and roots and other organic matter may be used for backfill of demolition areas that are not designated for new construction. Pieces of concrete and masonry smaller than one (1) square foot and suitably shaped for compaction may be used in backfill more than one (1) foot below finished grade.

3. Demolition on the existing barn may begin after twenty-one (21) days from the date of beneficial occupancy of the new Maintenance building.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that areas to be demolished are unoccupied and discontinued in use.

B. Do not commence work until conditions are acceptable to Project Manager.

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3.2 PREPARATION

A. Arrange for and verify termination of utility services to include capping lines.

B. Remove items scheduled to be salvaged and place in designated storage area.

3.3 DEMOLITION/ABANDONMENT

A. Fire Hydrant Abandonment Procedure

B. Below Grade Abandonment procedure:

1. Where hydrant lateral connects to main, cut fire hydrant lateral pipe and insert plug at main line connection designed for permanent underground installation on a pressurized water main.

2. Install concrete thrust block to reinforce plug.

3. Surface Abandonment Procedure:

4. Close Valve to hydrant

5. Remove valve box, riser, and appurtenances to a minimum of twelve (12) inches below grade.

6. Fill riser with clean sand and cap with minimum twelve (12) inches of concrete.

7. Remove hydrant, piping, and appurtenances to a minimum of twelve (12) inches below grade.

8. Fill pipe with clean sand and cap with minimum twelve (12) inches of concrete.

9. Fill and compact to ninety-five (95) percent of maximum density, backfill to grade.

10. Restore surface to match adjacent.

C. All debris from demolition and abandonment shall be removed off the Park and disposed of in a legal manner. Any material which the Project Manager may wish to save or reuse shall be stored per the Project Manager direction.

3.4 GENERAL

A. Dampen debris and use temporary enclosures as necessary to control dust.

B. Do not use water to the extent it causes flooding, contaminated runoff, or icing.

C. Break concrete and masonry into sections less than three (3) feet in any dimension and dispose of off-site.

D. Repair damage to adjacent structures.

E. Make neat saw cuts around areas of concrete to be removed, where remaining concrete is to be incorporated into new work.

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F. Remove existing exposed piping to the extent shown on the Drawings.

G. Remove buried piping to the extent shown on the Drawings.

H. All equipment to be removed or replaced shall be done so in a safe manner and such that the equipment and any associated piping or wiring is not damaged.

I. All debris from demolition and abandonment shall be removed off the Park and disposed of in a legal manner. Any material which the Project Manager may wish to salvage shall be cleaned and stored per the Project Manager’s direction and requirements of this specification.

3.5 HAZARDOUS MATERIALS

A. If suspected hazardous materials are encountered during demolition of existing facilities, all work is to be stopped immediately and the Project Manager is to be immediately notified.

3.6 DISPOSAL

A. Place demolition debris in debris boxes onsite for weekly removal.

B. Dispose of unsuitable and excess material off-site. Contractor shall recycle all recyclable demolished materials. Contractor shall submit names and contact information for proposed recyclers to the Project Manager prior to beginning demolition. Only materials not suitable for recycling shall be disposed of in a land fill.

C. Disposal of demolition material shall be in accordance with all EPA, OSHA, and Oregon requirements for materials disposal.

3.7 SALVAGE

A. Carefully remove items to be salvaged and delivered to Project Manager’s storage.

B. Store and protect items indicated to be salvaged.

C. Replace any items damaged through carelessness in removal, storage, or handling with new items of same type.

D. Do not reuse materials or equipment not specifically indicated or specified to be reused

E. Preparation of Equipment for Storage.

F. Identify each component with markings or tags to show its position in the assembly and the assembly of which it belongs.

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G. Place small parts in wooden boxes and clearly mark contents on the outside.

H. Thoroughly clean and dry equipment.

I. Coat unpainted surfaces with two (2) coats of rust-preventive compound.

J. Attach unit to suitable crate bottom.

K. Enclose unit in polyethylene film and seal all seams and the film to the base of the unit with tape.

L. Construct crate of wooden slats around top and sides of unit.

M. Attach permanent instruction tag to outside of crate stating, “This unit has been prepared for storage.”

END OF SECTION

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SELECTIVE DEMOLITION

SECTION 02 41 19

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 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 PREINSTALLATION MEETINGS

A. Pre-demolition Conference: Conduct conference at Project site.

1.4 INFORMATIONAL SUBMITTALS

A. Qualification Data: For refrigerant recovery technician.

B. Pre-demolition Photographs or Video: Submit before Work begins.

C. Statement of Refrigerant Recovery: Signed by refrigerant recovery technician.

1.5 CLOSEOUT SUBMITTALS

A. Landfill Records: Indicate receipt and acceptance of hazardous wastes by a landfill facility licensed to accept hazardous wastes.

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1.6 QUALITY ASSURANCE

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

1.7 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 CO or COR 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.

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.

1.8 WARRANTY

A. Existing Warranties: Remove, replace, patch, and repair materials and surfaces cut or damaged during selective demolition, by methods and with materials so as not to void existing warranties.

2.1 PEFORMANCE 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.

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3.1 EXAMINATION

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

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

C. 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 the CO and COR.

D. 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.

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

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 01 10 00 "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. Building manager will arrange to shut off indicated services/systems when requested by

Contractor.

2. Arrange to shut off indicated utilities with utility companies.

3. 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.

4. 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 Reinstalled: Disconnect and cap services and remove, clean, and store equipment; when appropriate, reinstall, reconnect, and make equipment operational.

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

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

f. Ducts to Be Abandoned in Place: Cap or plug 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 01 50 00

"Temporary Facilities & 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.

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.

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. 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.

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 fire watch and portable fire-suppression devices during flame-cutting operations.

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

5. Dispose of demolished items and materials promptly.

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B. 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. Protect items from damage during transport and storage.

C. 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.

D. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by the CO, 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 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.

B. Burning: Do not burn demolished materials.

3.6 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.

DIVISION 03

CONCRETE

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CAST-IN-PLACE CONCRETE

SECTION 03 30 00

A. Section includes cast-in-place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

B. Design Mixtures: For each concrete mixture.

C. Steel Reinforcement Shop Drawings: Placing drawings that detail fabrication, bending, and placement.

D. Formwork Shop Drawings: Prepared by or under the supervision of a qualified professional engineer detailing fabrication, assembly, and support of formwork.

1.3 INFORMATIONAL SUBMITTALS

A. Material certificates.

B. Material test reports.

C. Floor surface flatness and levelness measurements.

1.4 QUALITY ASSURANCE

A. Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C 94/C 94M requirements for production facilities and equipment.

1. Manufacturer certified according to NRMCA's "Certification of Ready Mixed Concrete

Production Facilities."

B. Testing Agency Qualifications: An independent agency, acceptable to authorities having jurisdiction, qualified according to ASTM C 1077 and ASTM E 329 for testing indicated.

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

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

D. Concrete Testing Service: Engage a qualified independent testing agency to perform material evaluation tests and to design concrete mixtures.

E. Preinstallation Conference: Conduct conference at Project site.

PART 2 – PRODUCTS

2.1 FORM-FACING MATERIALS

A. Smooth-Formed Finished Concrete: Form-facing panels that will provide continuous, true, and smooth concrete surfaces. Furnish in largest practicable sizes to minimize number of joints.

B. Rough-Formed Finished Concrete: Plywood, lumber, metal, or another approved material.

Provide lumber dressed on at least two edges and one side for tight fit.

2.2 STEEL REINFORCEMENT

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

B. Bar Supports: Bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place. Manufacture bar supports from steel wire, plastic, or precast concrete according to CRSI's "Manual of Standard Practice.

2.3 CONCRETE MATERIALS

A. Cementitious Material: Use the following cementitious materials, of the same type, brand, and source, throughout Project:

1. Portland Cement: ASTM C 150, Type I. Supplement with the following:

a. Fly Ash: ASTM C 618, Class C.

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

B. Normal-Weight Aggregates: ASTM C 33, graded.

1. Maximum Coarse-Aggregate Size: 3/4 inch nominal.

2. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement.

C. Water: ASTM C 94/C 94M and potable.

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2.4 ADMIXTURES

A. Air-Entraining Admixture: ASTM C 260.

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

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

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

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

2.5 VAPOR RETARDERS

A. Sheet Vapor Retarder: ASTM E 1745, Class A Include manufacturer's recommended adhesive or pressure-sensitive tape.

B. Sheet Vapor Retarder: Polyethylene sheet, ASTM D 4397, not less than 10 mils thick.

2.6 CURING MATERIALS

A. Evaporation Retarder: Waterborne, monomolecular film forming, manufactured for application to fresh concrete.

B. Absorptive Cover: AASHTO M 182, Class 2, burlap cloth made from jute or kenaf, weighing approximately 9 oz./sq. yd. when dry.

C. Moisture-Retaining Cover: ASTM C 171, polyethylene film or white burlap-polyethylene sheet.

D. Water: Potable.

E. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C 309, Type 1, Class B, dissipating.

F. Clear, Solvent-Borne, Membrane-Forming Curing and Sealing Compound: ASTM C 1315, Type 1, Class A.

1. VOC Content: Curing and sealing compounds shall have a VOC content of 200 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

G. Clear, Waterborne, Membrane-Forming Curing and Sealing Compound: ASTM C 1315, Type 1, Class A.

1. VOC Content: Curing and sealing compounds shall have a VOC content of 200 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

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2.7 RELATED MATERIALS

A. Expansion- and Isolation-Joint-Filler Strips: ASTM D 1751, asphalt-saturated cellulosic fiber or ASTM D 1752

2.8 CONCRETE MIXTURES

A. Prepare design mixtures for each type and strength of concrete, proportioned on the basis of laboratory trial mixture or field test data, or both, according to ACI 301.

B. Cementitious Materials: Use fly ash, pozzolan, ground granulated blast-furnace slag, and silica fume as needed to reduce the total amount of Portland cement, which would otherwise be used, by not less than 40 percent.

C. Admixtures: Use admixtures according to manufacturer's written instructions.

1. Use water-reducing or plasticizing admixture in concrete, as required, for placement and workability.

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

D. Proportion normal-weight concrete mixture as follows:

1. Minimum Compressive Strength: 4000 psi at 28 days.

2. Maximum Water-Cementitious Materials Ratio: 0.40.

3. Slump Limit: 4 inches before adding water-reducing admixture or plasticizing admixture, plus or minus 1 inch.

4. Air Content: 6 percent, plus or minus 1.5 percent at point of delivery for 3/4-inch nominal maximum aggregate size.

5. Air Content: Do not allow air content of trowel-finished floors to exceed 3 percent.

2.9 FABRICATING REINFORCEMENT

A. Fabricate steel reinforcement according to CRSI's "Manual of Standard Practice."

2.10 CONCRETE MIXING

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

1. When air temperature is between 85 and 90 deg F, reduce mixing and delivery time from

1-1/2 hours to 75 minutes; when air temperature is above 90 deg F, reduce mixing and delivery time to 60 minutes.

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PART 3 – EXECUTION

3.1 FORMWORK

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

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

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

3.2 EMBEDDED ITEMS

A. Place and secure anchorage devices and other embedded items required for adjoining work that is attached to or supported by cast-in-place concrete. Use setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

3.3 VAPOR RETARDERS

A. Sheet Vapor Retarders: Place, protect, and repair sheet vapor retarder according to

ASTM E 1643 and manufacturer's written instructions.

1. Lap joints 6 inches and seal with manufacturer's recommended tape.

3.4 STEEL REINFORCEMENT

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

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

3.5 JOINTS

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

B. Construction Joints: Install so strength and appearance of concrete are not impaired, at locations indicated or as approved by CO or COR.

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C. Contraction Joints in Slabs-on-Grade: Form weakened-plane contraction joints, sectioning concrete into areas as indicated. Construct contraction joints for a depth equal to at least one-fourth of concrete thickness as follows:

1. Sawed Joints: Form contraction joints with power saws equipped with shatterproof abrasive or diamond-rimmed blades. Cut 1/8-inch-wide joints into concrete when cutting action will not tear, abrade, or otherwise damage surface and before concrete develops random contraction cracks.

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

3.6 CONCRETE PLACEMENT

A. Before placing concrete, verify that installation of formwork, reinforcement, and embedded items is complete and that required inspections have been performed.

B. Deposit concrete continuously in one layer or in horizontal layers of such thickness that no new concrete will be placed on concrete that has hardened enough to cause seams or planes of weakness. If a section cannot be placed continuously, provide construction joints as indicated.

Deposit concrete to avoid segregation.

1. Consolidate placed concrete with mechanical vibrating equipment according to ACI 301.

C. Cold-Weather Placement: Comply with ACI 306.1.

D. Hot-Weather Placement: Comply with ACI 301.

3.7 FINISHING FORMED SURFACES

A. Rough-Formed Finish: As-cast concrete texture imparted by form-facing material with tie holes and defects repaired and patched. Remove fins and other projections that exceed specified limits on formed-surface irregularities.

1. Apply to concrete surfaces not exposed to public view.

B. Smooth-Formed Finish: As-cast concrete texture imparted by form-facing material, arranged in an orderly and symmetrical manner with a minimum of seams. Repair and patch tie holes and defects. Remove fins and other projections that exceed specified limits on formed-surface irregularities.

1. Apply to concrete surfaces exposed to public view.

2. Retain rubbed finish in first paragraph below with smooth-formed finish in paragraph above.

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C. Rubbed Finish: Apply the following to smooth-formed finished as-cast concrete where indicated:

1. Smooth-Rubbed Finish: Not later than one day after form removal, moisten concrete surfaces and rub with carborundum brick or another abrasive until producing a uniform color and texture. Do not apply cement grout other than that created by the rubbing process.

2. Grout-Cleaned Finish: Wet concrete surfaces and apply grout of a consistency of thick paint to coat surfaces and fill small holes. Mix one part Portland cement to one and one-half parts fine sand with a 1:1 mixture of bonding admixture and water. Add white

Portland cement in amounts determined by trial patches so color of dry grout will match adjacent surfaces. Scrub grout into voids and remove excess grout. When grout whitens, rub surface with clean burlap and keep surface damp by fog spray for at least 36 hours.

D. Related Unformed Surfaces: At tops of walls, horizontal offsets, and similar unformed surfaces adjacent to formed surfaces, strike off smooth and finish with a texture matching adjacent formed surfaces. Continue final surface treatment of formed surfaces uniformly across adjacent unformed surfaces unless otherwise indicated.

3.8 FINISHING FLOORS AND SLABS

A. General: Comply with ACI 302.1R recommendations for screeding, restraightening, and finishing operations for concrete surfaces. Do not wet concrete surfaces.

B. Scratch Finish: While still plastic, texture concrete surface that has been screeded and bull-floated or darbied. Use stiff brushes, brooms, or rakes to produce a profile amplitude of 1/4 inch in one direction.

1. Apply scratch finish to surfaces to receive mortar setting beds for bonded cementitious floor finishes.

C. Trowel Finish: After applying float finish, apply first troweling and consolidate concrete by hand or power-driven trowel. Continue troweling passes and restraighten until surface is free of trowel marks and uniform in texture and appearance. Grind smooth any surface defects that would telegraph through applied coatings or floor coverings.

1. Apply a trowel finish to surfaces to be covered with resilient flooring, carpet, ceramic or quarry tile set over a cleavage membrane, paint, or another thin-film-finish coating system.

2. Finish and measure surface so gap at any point between concrete surface and an unleveled, freestanding, 10-ft.-long straightedge resting on two high spots and placed anywhere on the surface does not exceed 1/8 inch.

D. Trowel and Fine-Broom Finish: Apply a first trowel finish to surfaces where ceramic or quarry tile is to be installed by either thickset or thin-set method. While concrete is still plastic, slightly scarify surface with a fine broom.

1. Comply with flatness and levelness tolerances for trowel-finished floor surfaces.

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E. Broom Finish: Apply a broom finish to exterior concrete platforms, steps, ramps, and elsewhere as indicated.

3.9 CONCRETE PROTECTING AND CURING

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures. Comply with ACI 306.1 for cold-weather protection and ACI 301 for hot-weather protection during curing.

B. Evaporation Retarder: Apply evaporation retarder to unformed concrete surfaces if hot, dry, or windy conditions cause moisture loss approaching 0.2 lb/sq. ft. x h before and during finishing operations. Apply according to manufacturer's written instructions after placing, screeding, and bull floating or darbying concrete, but before float finishing.

C. Cure concrete according to ACI 308.1, by one or a combination of the following methods:

1. Moisture Curing: Keep surfaces continuously moist for not less than seven days.

2. Moisture-Retaining-Cover Curing: Cover concrete surfaces with moisture-retaining cover for curing concrete, placed in widest practicable width, with sides and ends lapped at least 12 inches and sealed by waterproof tape or adhesive. Cure for not less than seven days. Immediately repair any holes or tears during curing period using cover material and waterproof tape.

3. Curing Compound: Apply uniformly in continuous operation by power spray or roller according to manufacturer's written instructions. Recoat areas subjected to heavy rainfall within three hours after initial application. Maintain continuity of coating and repair damage during curing period.

a. Removal: After curing period has elapsed, remove curing compound without damaging concrete surfaces by method recommended by curing compound manufacturer unless manufacturer certifies curing compound will not interfere with bonding of floor covering used on Project.

4. Curing and Sealing Compound: Apply uniformly to floors and slabs indicated in a continuous operation by power spray or roller according to manufacturer's written instructions. Recoat areas subjected to heavy rainfall within three hours after initial application. Repeat process 24 hours later and apply a second coat. Maintain continuity of coating and repair damage during curing period.

3.10 CONCRETE SURFACE REPAIRS

A. Defective Concrete: Repair and patch defective areas when approved by CO or CO. Remove and replace concrete that cannot be repaired and patched to the CO and COR’s approval.

3.11 FIELD QUALITY CONTROL

A. Testing and Inspecting: Owner will engage a qualified testing and inspecting agency to perform field tests and inspections and prepare test reports.

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CONCRETE FLOOR SLABS

SECTION 03 30 01

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of contract, including Division 1 Specification Sections apply to work of this Section.

1.2 SECTION INCLUDES

A. Formwork, reinforcing, placement, finishing and curing for concrete floor slabs.

B. Shoring and bracing

C. Underslab vapor retarder sheet

1.3 REFERENCES

A. All reference shall be the latest adopted edition.

B. ACI 211.1 - Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass

Concrete; American Concrete Institute International

C. ACI 301 - Specifications for Structural Concrete for Buildings; American Concrete Institute

International

D. ACI 302.1R - Guide for Concrete Floor and Slab Construction; American Concrete Institute

International

E. ACI 304R - Guide for Measuring, Mixing, Transporting, and Placing Concrete; American

Concrete Institute International

F. ACI 305R - Hot Weather Concreting; American Concrete Institute International

G. ACI 306R - Cold Weather Concreting; American Concrete Institute International

H. ACI 318 - Building Code Requirements for Reinforced Concrete and Commentary; American

Concrete Institute International

I. ASTM C33 - Standard Specification for Concrete Aggregates

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J. ASTM C94 - Standard Specification for Ready-Mixed Concrete

K. ASTM C150 - Standard Specification for Portland Cement

L. ASTM C260 - Standard Specification for Air-Entraining Admixtures for Concrete

M. ASTM C494 - Specification for Chemical Admixtures for Concrete

N. ASTM C1059 - Standard Specification for Latex Agents for Bonding Fresh to Hardened

Concrete

O. ASTM C1107 - Standard Specification for Packaged Dry, Hydraulic-Cement Grout (Non-shrink)

P. ASTM D1751 - Standard Specification for Preformed Expansion Joint Filler for Concrete

Paving and Structural Construction (Non-extruding and Resilient Bituminous Types)

1.4 SUBMITTALS

A. Refer to Division 1 of the specifications for submit procedures.

B. Product Data:

1. Submit product data for concrete design mix(s) from concrete supplier for each different floor slab condition.

2. Under slab vapor retarder.

C. Design Mixes: For each concrete mix, submit proposed mix designs a minimum of fifteen (15) days in advance of placing operations for each type of concrete. The submitted mix designs shall include the following:

1. Supporting test data for mixes that is not more than twelve (12) months old. Include a sufficient number of tests and conduct a statistical analysis in compliance with ACI 301.

2. Gradation of fine and coarse aggregates not more than ninety (90) days old showing compliance with ASTM C33.

3. Proportions of all ingredients, including all admixtures added either at the time of batching or at the job site. Aggregate weights shall be based upon saturated surface dry conditions.

4. Water/cement ratio.

5. Slump as measured according to ASTM C143. Provide slump test for each mix.

6. Air content of freshly mixed concrete as measured according to ASTM C231.

7. Strength measured at seven (7) and twenty-eight (28) days. Provide strength test for each mix at a frequency of both the seventh (7th) and twenty-eighth (28th) day.

8. Certifications that all ingredients in each mix are compatible.

9. Locations or intended use of each mix design.

10. Source of all materials.

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D. Material Certificates: Signed by manufacturer’s certifying that each of the following items complies with the requirements:

1. Cementitious materials and aggregates. Include mill certificates for cement.

2. Form-release agents.

3. Steel reinforcement and reinforcement accessories.

4. Admixtures.

5. Curing materials.

E. Steel Reinforcement Shop Drawings: Details of fabrication, bending, and placement prepared according to ACI 315, “Details and Detailing of Concrete Reinforcement.”

1. Include material, grade, bar schedules, stirrup spacing, bent bar diagrams, arrangement, and supports of concrete reinforcement.

2. Include special reinforcement required for openings through concrete structures.

3. Provide placement details for all specific reinforcing intersections and clearance conditions not shown by the typical details on the structural drawings.

4. Prepare drawings in sufficient detail to resolve all reinforcing intersections.

1.5 QUALITY ASSURANCE

A. Perform work of this section in accordance with ACI 301 and ACI 318.

B. Acquire cement from same source and aggregate from same source for entire project.

C. Follow recommendations of ACI 305R when concreting during hot weather.

D. Follow recommendations of ACI 306R when concreting during cold weather.

1.6 CONTRACTOR RESPONSIBILITY

A. Contractor is responsible for designing and engineering the formwork along with the associated bracing and shoring to withstand all imposed construction forces.

B. Contractor is responsible for coordinating and controlling the installation and protection of the entire concrete slab assembly including the Underslab capillary break selection, selection of concrete design mix conforming to design criteria, control of water added to concrete on the site, placement of concrete, slab finishing methods, slab curing methods and dry-out of the concrete slabs so as to achieve a crack-free slab with surface finish, vapor emission rate, moisture content and pH level required for and by the floor covering manufacturer(s) for successful application of their products.

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2.1 FORMWORK MATERIALS

A. Form Materials (Except at concrete exposed to view): Provide per ACI 347R at discretion of

Contractor.

B. Form Material for Concrete Exposed to View: APA rated B-B High Density Concrete Form

Overlay plywood, Class I, conforming to PS 1.

1. Plywood shall be new, or used once with face free of defects and nail holes filled.

C. Form Release Agent: Colorless, non-staining, low or no VOC, will not adversely affect surface coatings or waterproofing.

D. Accessories:

1. Nails, Spikes, Lag Bolts, Through Bolts, Anchorages: Sized as required, of sufficient strength and character to maintain formwork in place while placing concrete.

2.2 INSERTS & EMBEDS

A. Inserts And Embeds: Steel or ductile iron as specified on Structural Drawings, type and configuration suitable for intended load/connection and rated for intended load with generous margin of safety.

B. Anchor bolts: As specified on Structural Drawings.

2.3 REINFORCEMENT

A. Reinforcing Steel and Welded Wire Mesh: As specified in General Notes on the Structural

Drawings.

B. Welded Wire Mesh: As specified on General Notes on the Structural Drawings.

C. Reinforcement Accessories:

1. Tie Wire: Annealed, minimum sixteen (16) gage.

2. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for adequate support of reinforcement during concrete placement.

a. Where reinforcement is installed over underslab vapor retarder, provide metal or concrete support pads that will not damage the vapor retarder.

b. Provide stainless steel or plastic components for placement within one and one-half inch (1-1/2”) of weathering surfaces.

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D. Fabrication:

1. Fabricate concrete reinforcing in accordance with CRSI (DA4) - Manual of Standard

Practice.

2. Welding of reinforcement is permitted only with the specific approval of CO or COR.

Perform welding in accordance with AWS D1.4.

3. Locate reinforcing splices not indicated on drawings at point of minimum stress.

2.4 CONCRETE MATERIALS

A. Cement: As specified in General Notes on the Structural Drawings.

B. Slag Or Flyash:

1. LEEDTM Requirement: Recycled Content Credit MRc4.1 & MRc4.2: Pre- consumer recycled content based on amount of slag or flyash in the concrete mix; select either slag or flyash (not both) as follows:

a. Slag: Replace a minimum of twenty-three percent (23%) up to a maximum of thirty percent (30%) of cement content with slag.

b. Flyash: Replace a minimum of eighty (80) lbs. up to a maximum of one hundred

(100) lbs. per cubic yard of cement with flyash.

2. Slag Or Flyash - Select One Only:

a. Slag: Ground granulated blast furnace slag conforming to ASTM C989 Grade 100 or 120.

b. Flyash: Conform to ASTM C618, Class F.

c. Manufacturers:

1) Boral Material Technologies, Inc.

2) Full Circle Solutions, Inc.

3) Headwater Resources, Inc.

4) Holcim US, Inc.

5) Lafarge North America

6) Mineral Resources Technologies, LLC

7) Mineral Solutions, Inc.

8) The SEFA Group

C. Aggregates:

1. Aggregates: Conform to the requirements of ASTM C33 and subject to the approval of the structural engineer.

a. Do not use high alkaline content aggregates that would prevent slab surface from achieving a pH of 9 or less after curing and dehydration.

D. Water: Potable and complying with ASTM C94

2.5 ADMIXTURES

A. Admixtures: As specified in General Notes on the Structural Drawings.

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B. Water-Reducing Admixture – Super Plasticizer: Conform to ASTM C494, Type F, provide water reducing, super-plasticizing admixture to concrete mix as required to maintain the water/cement ratio specified herein and improve workability and slump required for proper placement, consolidation and finishing.

2.6 CONCRETE MIX DESIGN

A. Proportioning Normal Weight Concrete: Provide concrete mix design that will result in concrete as specified in the General Notes on the Structural Drawings and this Section. Comply with ACI 211.1 recommendations. Conform with the following special requirements:

1. Special Requirements: In addition to the requirements of the General Notes on the

Structural Drawings, conform to the following:

a. Water/Cement Ratio: 0.40 or less; add water-reducing admixture as required to achieve.

b. Concrete shall not contain high alkaline content aggregates that would prevent slab surface from achieving a pH of nine (9) or less after curing and dehydration.

2.7 MIXING

A. Transit Mixers: Comply with ASTM C94.

2.8 CONCRETE ACCESSORIES

A. Bonding Agent: ASTM C1059, Type II acrylic non-redispersable type.

B. Non-Shrink Grout: As specified in General Notes on the Structural Drawings.

2.9 UNDERSLAB VAPOR RETARDER FOR SLAB ON GRADE

A. Vapor Retarder: Ten (10) mil polyolefin or HD polyethylene film manufactured from virgin resins; conforming to ASTM E1745 Class A; 0.3 perms or less when tested in accordance with

ASTM E96 and F1269; the following products are acceptable:

1. Similar to: Griffolyn 10 Mil Green manufactured by Reef Industries Phone: (800) 231-

2. Similar to: Moistop Ultra 10 manufactured by Fortifiber Phone: (800) 773-4777

3. Similar to: Perminator 10 Mil manufactured by WR Meadows, Inc. Phone: (800) 342-

4. Similar to: Stego Wrap 10 Mil manufactured by Stego Industries, LLC Phone: (877)

464-7834

5. Similar to: Viper VaporCheck II 10-mil manufactured by Insulation Solutions, Inc.

Phone: (866) 698-6562

6. Similar to: Viper VaporCheck 10 manufactured by Insulation Solutions, Inc. Phone:

(866) 698-6562

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B. Accessories For Underslab Vapor Retarder:

1. Seam Tape: Provide manufacturer’s recommended tape for sealing seams.

2. Mastic/Sealant: Vapor retardant mastic or sealant recommended by vapor retarder manufacturer for sealing vapor retarder to perimeter walls and sealing seams.

3. Boots At Pipe/Conduit Penetrations: Construct pipe boots from vapor retarder material and seam tape or mastic in accordance with manufacturer’s instructions.

C. Bonding Agent: ASTM C1059, Type II acrylic non-redispersable type.

D Non-Shrink Grout: As specified in General Notes on the Structural Drawings.

2.10 CONSTRUCTION & CONTROL JOINT ACCESSORIES

A. Sealant Filled Control Joints – Slabs Exposed To View: Rigid expansion joint filler conforming with ASTM D1751 or D1752 as required by sealant manufacturer.

1. Removable Top: Similar to W.R. Meadows Snap-Cap plastic removable top.

2. Joint Width: One half (½) inch.

B. Control Joints – Slabs Concealed From View: T-shaped vinyl control joint.

1. W.R. Meadows Speed-E-Joint

2. Zip Strip

3. Or similar

2.11 SCREED SYSTEM

A. Contractor shall select a screed…