SECTION 03 10 00 CONCRETE FORMWORK

TPW.027 – FAWCETT WMA 100% CD’s

03 10 00 - 1

CONCRETE FORMWORK

SECTION 03 10 00 CONCRETE FORMWORK

PART 1 - GENERAL 1.1 RELATED DOCUMENTS

A. Bidding and/or Negotiations Requirements,

B. General Conditions of the Contract,

C. Supplementary Conditions,

D. Pertinent portions of sections in Division 1 of the Project Specifications and the Drawings shall apply to the Work of this Section.

1.2 WORK INCLUDED

A. Scope: Provide all labor, materials, equipment and services necessary to provide the formwork, shoring, bracing, form removal, reshoring, etc., for cast-in-place concrete as indicated and/or specified.

B. Work Included: Formwork for cast-in-place concrete, with shoring, bracing, anchorage and as

follows:

1. Openings for other affected work. 2. Form accessories. 3. Stripping forms.

1.3 RELATED WORK

A. General: Following items of related work are included in other sections:

1. Concrete reinforcement: Section 03 20 00. 2. Cast-in-place concrete: Section 03 30 00.

1.4 SYSTEM DESCRIPTION

A. General: Design, engineer, and construct formwork, shoring, and bracing to meet design and code requirements, so that resultant concrete conforms to required shapes, lines, and dimensions.

1.5 QUALITY ASSURANCE

A. General: Construct and erect concrete formwork in accordance with ACI 301. 1.6 REFERENCES

A. General: Construct concrete formwork in accordance with requirements of following standards:

1. ACI 301 - Specifications for Structural Concrete for Buildings. 2. ACI 347 - Recommended Practice for Concrete Formwork. 3. PS-1 - Construction and Industrial Plywood.

1.7 SUBMITTALS


03 10 00 - 2

CONCRETE FORMWORK

A. Product Data: Submit manufacturer's technical data and application instructions. 1.8 SUBSTITUTIONS

A. General: For products specified herein, Bids shall be based on products named in Project Manual, or on items which Architect has designated as an "approved equal.” A product not named in Project Manual or that is not approved by Architect will only be acceptable when such product meets all other requirements of Project Specifications, including specifications of originally specified products' manufacturer as of date of Contract Documents.

B. Note: Architect's approval of an item for a previous project does not constitute approval for this

Project. 1.9 DELIVERY, STORAGE, AND HANDLING

A. General: Deliver, store, and handle materials in accordance with Uniform General Conditions. PART 2 - PRODUCTS 2.1 FORM MATERIALS

A. Plywood: PS-1, MDO grade, Class I.

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

2.2 FORMWORK ACCESSORIES

A. Form Ties: Snap-off metal of fixed or adjustable length; cone type; inch break back dimension; free of defects that will leave holes no larger than one inch in diameter in concrete surface.

B. Form Release Agent: Colorless material which will not stain concrete, absorb moisture, or impair natural bonding or color characteristics of coating intended for use on concrete; manufactured by Symon's Corp. or approved equal.

C. Fillets for Chamfered Corners: Wood strips type; 1 inch x 1 inch size.

D. Flashing Reglets: 26 gauge galvanized steel or Rigid PVC; longest possible lengths; release tape

sealed slots; with alignment splines for joints; securable to concrete formwork.

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

PART 3 - EXECUTION 3.1 INSPECTION

A. General: Verify lines, levels, and measurements before proceeding with formwork. 3.2 PREPARATION

A. Earth Forms: Hand-trim sides and bottoms of earth forms; remove loose dirt prior to placing concrete.

B. General: Minimize form joints. Symmetrically align joints and make watertight to prevent leakage of

mortar.


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CONCRETE FORMWORK

C. Arrangement of Forms: Arrange and assemble formwork to permit dismantling and/or stripping, so

that concrete is not damaged during its removal.

D. Note: Arrange forms to allow stripping without removal of principal shores, where required to remain in place.

3.3 ERECTION

A. General: Provide bracing to ensure stability of formwork. Strengthen formwork liable to be overstressed by construction loads.

B. Camber: Camber slabs and beams to achieve ACI 301 tolerances.

C. Clean-Out Ports: Provide temporary ports in formwork to facilitate cleaning and inspection. Locate

openings at bottom of forms to allow flushing water to drain. Close ports with tight fitting panels, flush with inside face of forms, neatly fitted so that joints will not be apparent in exposed concrete surfaces.

D. Chamfer Strips: Provide chamfer strips on external corners of beams and columns.

E. Note: Do not displace or damage vapor barrier placed by Section 03300 - "Cast-In-Place Concrete."

F. Form Construction: Construct formwork to maintain tolerances in accordance with ACI 301.

3.4 APPLICATION OF FORM RELEASE AGENT

A. General: Apply form release agent on formwork in accordance with manufacturer's instructions. Apply prior to placing reinforcing steel, anchoring devices, and embedded items.

B. Note: Do not apply form release agent where concrete surfaces are scheduled to receive special

finishes which may be affected by agent. Soak contact surfaces of untreated forms with clean water. Keep surfaces wet prior to placing concrete.

3.5 INSERTS, EMBEDDED PARTS, AND OPENINGS

A. General: Provide formed openings where required for work embedded in or passing through concrete.

B. Coordination: Coordinate work of other sections in forming and setting openings, slots, recesses,

chases, sleeves, bolts, anchors, and other inserts.

C. Installation: Install accessories in accordance with manufacturer's instructions, level and plumb. Ensure items are not disturbed during concrete placement.

3.6 FORM REMOVAL

A. General: Do not remove forms until concrete has sufficient strength to support its own weight, and construction and design loads which may be imposed upon it. Remove load supporting forms when concrete has attained 75 percent of required 28 day compressive strength, provided construction is reshored.

B. Reshorings: Reshore structural members due to design requirements or construction conditions to

permit successive construction.

C. Form Removal: Remove formwork progressively so no unbalanced loads are imposed on structure.


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CONCRETE FORMWORK

D. Note: Do not damage concrete surfaces during form removal.

E. Storage of Forms: Store reusable forms for exposed architectural concrete to prevent damage to contact surfaces.

3.7 CLEANING

A. General: Clean forms to remove foreign matter as erection proceeds.

B. Clean-Out Ports: Ensure that water and debris drain to exterior through clean-out ports.

C. Note: During cold weather, remove ice and snow from forms. Do not use de-icing salts. Do not use water to clean out completed forms, unless formwork and construction proceed within heated enclosure. Use compressed air to remove foreign matter.

END OF SECTION 03 10 00


03 20 00 - 1

CONCRETE REINFORCEMENT

SECTION 03 20 00

CONCRETE REINFORCEMENT PART 1 - GENERAL 1.1 RELATED DOCUMENTS

A. General: Bidding and/or Negotiations Requirements, General Conditions of the Contract, Supplementary Conditions, pertinent portions of sections in Division 1 of the Project Specifications and the Drawings shall apply to the Work of this Section.

1.2 WORK INCLUDED

A. Scope: Provide concrete reinforcement as indicated on Drawings and specified herein. 1.3 RELATED WORK

A. General: Following items of related work are included in other sections:

B. Concrete: Section 03 30 00. 1.4 QUALITY ASSURANCE

A. Standard and Industry Specifications: Any material or operation specified by reference to a published specification of a manufacturer, American Society for Test and Materials (ASTM), American Concrete Institute (ACI), Concrete Reinforcing Steel Institute (CRSI) or other published standards, shall comply with requirement of such current specifications or standards listed.

B. Note: In case of conflict between referenced specification or standard and this Project Specification,

the Project Specification shall govern. 1.5 SUBMITTALS

A. General: Submit in accordance with requirements of Uniform General Conditions.

B. Product Data: Submit manufacturer's product data with application and installation instructions for proprietary materials and items, including reinforcement and forming accessories.

C. Reinforcement Shop Drawings: Submit shop drawings for fabrication, bending, and placement of

concrete reinforcement. Comply with ACI 315 "Manual of Standard Practice for Detailing Reinforced Concrete Structures" showing bar schedules, stirrup spacing, diagrams of bent bars, and arrangement of concrete reinforcement. Include special reinforcement required and openings through concrete structures.

D. Note: Do not fabricate and/or deliver reinforcing materials until shop drawings are approved, unless

such approval is waived in writing by Architect.

E. Marking System: Identify various shipping pieces, units or groups by an approved marking system.

F. Test Reports: Furnish certified copies of tests on reinforcing materials to determine compliance with material requirements specified herein, if required by Architect.

1.6 SUBSTITUTIONS

A. General: For products specified herein, Bids shall be based on products named in Project Manual, or on items which Architect has designated as an "approved equal.” A product not named in Project Manual or that is not approved by Architect will only be acceptable when such product meets all other


03 20 00 - 2


requirements of Project Specifications, including specifications of originally specified products' manufacturer as of date of Contract Documents.

B. Note: Architect's approval of an item for a previous project does not constitute approval for this

Project. 1.7 DELIVERY, STORAGE AND HANDLING

A. Storage: Store reinforcing materials a minimum of 4 inches above ground level, under cover, protected from rusting, oil, grease and any other condition that might affect bonding. Protect reinforcing from distortion.

B. Note: Do not cover with polyethylene or other plastic sheets if subject to direct sunlight.

C. Handling: Remove from storage only reinforcement needed for immediate use. PART 2 - PRODUCTS 2.1 REINFORCING MATERIALS

A. Reinforcing Bars: ASTM A-615, Grade 60, deformed to ASTM A-305; clean and free of loose rust, mill scale and/or other coating that will reduce bonding.

B. Steel Wire: ASTM A-82, plain, cold-drawn steel.

C. Welded Wire Fabric: ASTM A-185, welded steel wire fabric.

D. Supports for Reinforcement: Provide accessories and supports for reinforcement including bolsters,

chairs, spacers and other devices required for spacing, supporting and fastening reinforcing bars and weld wire fabric in place. Use wire bar type supports complying with CRSI recommendations. Provide galvanized finish on accessories where legs will be exposed in finished concrete surface. Accessories fabricated from concrete, ceramic or plastic materials may be used if prior approval is obtained in writing from Architect.

PART 3 - EXECUTION 3.1 REINFORCING MATERIAL PLACEMENT

A. General: Conform to requirements of ACI 301 "Specifications for Structural Concrete for Buildings," and as specified herein, except as modified by General Notes on Structural Drawings.

B. Cleaning: Reinforcing materials shall be cleaned of loose rust and mill scale, earth, ice and other

materials which reduce or destroy bond with concrete.

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

D. Reinforcing Bars: Place reinforcement to obtain at least minimum coverage for concrete protection.

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

E. Welded Wire Fabric: Install welded wire fabric in as long lengths as practicable. Lap adjoining

pieces at least one full mesh and lace splices with wire. Offset end laps in adjacent widths to prevent continuous laps in either direction. Support welded wire fabric with metal chairs, runners, bolsters, spacers, and hangers as required.


03 20 00 - 3




03 30 00 - 1 CAST-IN-PLACE CONCRETE

SECTION 03 30 00 CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 SUMMARY

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

B. See Division 31 Section "Earth Moving" and Division 2 Section “Geotechnical Data” for drainage fill under slabs-on-grade.

1.2 SUBMITTALS

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

B. Design Mixtures: For each concrete mixture.

C. Shop Drawings: For steel reinforcement. Material test reports and certificates.


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. ACI Publications: Comply with the following unless modified by requirements in the Contract Documents: 1. ACI 301, "Specification for Structural Concrete," Sections 1 through 5. 2. ACI 117, "Specifications for Tolerances for Concrete Construction and Materials."

C. 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. Recycled Content of Steel Products: Provide products with an average recycled content of steel products so post-consumer recycled content plus one-half of pre-consumer recycled content is not less than 60 percent.

B. Reinforcing Bars: ASTM A615, Grade 60, deformed.

C. Plain-Steel Welded Wire Reinforcement: ASTM A185, plain, fabricated from as-drawn steel wire into flat sheets.

D. Deformed-Steel Welded Wire Reinforcement: ASTM A497, flat sheet.



E. Galvanized-Steel Welded Wire Reinforcement: ASTM A185, plain, fabricated from galvanized steel wire into flat sheets.

F. 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 C150, Type I or II. 2. Flyash and other pozzolans shall conform to ASTM C-618 and shall not make up more than 20

percent of the total cementitious materials by weight. Do not use flyash in concrete when the temperature during placement or curing is projected to fall below 50 deg. F.

B. Normal-Weight Aggregates: ASTM C33, graded, 1 inch nominal maximum coarse-aggregate size. 1. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement.

C. Water: ASTM C94 and potable.

D. Air-Entraining Admixture: ASTM C260.

E. 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 C494, Type A. 2. Retarding Admixture: ASTM C494, Type B. 3. Water-Reducing and Retarding Admixture: ASTM C494, Type D. 4. High-Range, Water-Reducing Admixture: ASTM C494, Type F. 5. High-Range, Water-Reducing and Retarding Admixture: ASTM C494, Type G. 6. Plasticizing and Retarding Admixture: ASTM C1017, Type II.

2.4 VAPOR RETARDERS

A. Refer to Section 07 10 00 – Waterproofing and Dampproofing.

2.5 CURING MATERIALS

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

B. Absorptive Cover: AASHTO M182, Class 2, burlap cloth made from jute or kenaf, weighing approximately 9 oz./sq. yd. when dry.

C. Moisture-Retaining Cover: ASTM C171, polyethylene film or white burlap-polyethylene sheet.

D. Water: Potable.

E. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C309, Type 1, Class B, dissipating.

F. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C309, Type 1, Class B, non-dissipating, certified by curing compound manufacturer to not interfere with bonding of floor covering.

G. Clear, Solvent-Borne, Membrane-Forming Curing and Sealing Compound: ASTM C1315, Type 1, Class A.

H. Clear, Waterborne, Membrane-Forming Curing and Sealing Compound: ASTM C1315, Type 1, Class A.



2.6 RELATED MATERIALS

A. Expansion- and Isolation-Joint-Filler Strips: ASTM D1751, asphalt-saturated cellulosic fiber or ASTM D1752, cork or self-expanding cork.

2.7 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. Proportion normal-weight concrete mixture as indicated on design drawings.

C. Contractor through his concrete supplier, shall submit concrete mix design data to the Architect for review and approval PRIOR to construction. Any concrete placed without approval by the Architect shall be at the risk of the contractor and subject to removal.

2.8 FABRICATING REINFORCEMENT

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

2.9 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C94, and furnish batch ticket information. 1. When air temperature is between 85 and 90 deg F (30 and 32 deg C), reduce mixing and delivery

time from 1-1/2 hours to 75 minutes; when air temperature is above 90 deg F (32 deg C), reduce mixing and delivery time to 60 minutes.

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. Plastic Vapor Retarders: Place, protect, and repair vapor retarders according to ASTM E1643 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 Architect.

C. Contraction Joints in Slabs-on-Grade: Form weakened-plane contraction joints, sectioning concrete into areas as indicated. 1. Grooved Joints: Form contraction joints after initial floating by grooving and finishing each edge of

joint to a radius of 1/8 inch. Repeat grooving of contraction joints after applying surface finishes. Eliminate groover tool marks on concrete surfaces.

2. 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 approved by Architect.

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 approved by Architect.

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.

3. Cork-Floated Finish: Wet concrete surfaces and apply a stiff grout. Mix one part portland cement and one part fine sand with a 1:1 mixture of bonding agent and water. Add white portland cement in amounts determined by trial patches so color of dry grout will match adjacent surfaces. Compress grout into voids by grinding surface. In a swirling motion, finish surface with a cork float.

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. Building slab to be polished conrete: Refer to Specification 03 35 43 – Polished Concrete Finishing.

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 approved by architect. 2. Finish and measure surface so gap at any point between concrete surface and an unleveled,

freestanding, 10-foot long straightedge resting on 2 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 approved by architect. While concrete is still plastic, slightly scarify surface with a fine broom. 1. Comply with flatness and levelness tolerances for trowel finished floor surfaces.

E. Broom Finish: Apply a broom finish to exterior concrete platforms, steps, and 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 (300 mm), 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. 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 Architect. Remove and replace concrete that cannot be repaired and patched to Architect's approval.

3.11 FIELD QUALITY CONTROL

A. Testing and Inspecting: Owner will engage a qualified independent testing and inspecting agency to perform field tests and inspections and prepare test reports. 1. Testing Services: Tests shall be performed according to ACI 301.


TPW.027 – FAWCETT WMA 03 35 00-1 100% CD’S CONCRETE FINISHING

SECTION 03 35 00 CONCRETE FINISHING

PART 1 - GENERAL 1.1 SUMMARY

A. Section Includes: 1. Finishing concrete slabs and formed surfaces. 2. Floor sealer/hardener.

1.2 REFERENCES

A. American Concrete Institute (ACI): 1. 301 - Structural Concrete for Buildings. 2. 302.1 - Guide for Concrete Floor and Slab Construction.

B. ASTM International (ASTM):

1. C309 - Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete. 1.3 SUBMITTALS

A. Submittals for Review: 1. Product Data: Descriptive data for sealer/hardener.


A. Installer Qualifications: Minimum five years experience in work of this Section.

PART 2 - PRODUCTS 2.1 MATERIALS

A. Concrete Materials: Specified in Section 03 30 00.

B. Floor Sealer/Hardener: Water soluble, magnesium-flurosilicate based, reactive with free lime in concrete, non-film forming.

2.2 MIXES

A. Patching Mortar: 1. Use same proportions as concrete except omit coarse aggregate. 2. Add minimum water required for handling and placing.

B. Mortar Slurry: 1 part Portland cement and 1-1/2 part damp, loose sand, by volume.

PART 3 - EXECUTION 3.1 FINISHING FORMED SURFACES

A. Concealed Surfaces: Leave texture imparted by forms.

B. Exposed Surfaces: 1. While concrete is still green, patch voids over 1/2 inch in diameter or depth. 2. Chip away defective concrete; form edges perpendicular to surface. Wet area to be patched with

clean water. 3. Apply bonding agent in accordance with manufacturer's instructions.

TPW.027 – FAWCETT WMA 03 35 00-2 100% CD’S CONCRETE FINISHING

4. Press mortar into place; strike off slightly higher than surrounding surface. Allow initial shrinkage to occur before finishing.

5. Finish to match texture and color of adjacent surfaces. 6. Remove fins and other protrusions by rubbing with carborundum stone while concrete is still green. 7. After patching and while concrete is still green, spread mortar slurry over dampened surface. 8. Apply using burlap pads or sponge rubber floats. Remove surplus material, then rub with clean

burlap. 9. Keep surfaces damp for 7 days minimum.

3.2 FINISHING INTERIOR FLOOR SURFACES

A. Finish concrete floor surfaces in accordance with ACI 301 and ACI 302.1.

B. Steel trowel surfaces to be exposed. Apply sealer/hardener in accordance with manufacturer's instructions.

C. In areas with floor drains, maintain design floor elevation at walls; slope surfaces uniformly to drains at

1/8 inch per foot.

D. Tolerances: 1. Maximum variation of surface flatness for exposed concrete floors: 1/4 inch in 10 feet. 2. Correct defects by grinding or removal and replacement of defective work. Re-measure corrected

areas by same process.

E. Refer to Room Finish Schedules for each individual building for verification of required floor finishes.

F. Where floor finish is to be polished concrete, refer to Specification 03 35 43 – Polished Concrete Finishing.

3.3 FINISHING EXTERIOR SLAB SURFACES

A. Finish concrete slab surfaces in accordance with ACI 301.

B. Steel trowel and broom finish surfaces unless otherwise indicated. Steel trowel and crossrake ramp surfaces.

D. Tolerances:

1. Maximum variation of surface flatness: 1/4 inch in 10 feet. 2. Correct defects by grinding or removal and replacement of defective work. Re-measure corrected

areas by same process.



03 35 43 - 1 POLISHED CONCRETE FINISHING

SECTION 03 35 43 POLISHED CONCRETE FINISHING

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 this Section.

1.2 SUMMARY

A. Section includes polished concrete finishing.

1. Concrete for polished concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, initial finishing, and curing is specified in Section 03 30 00 "Cast-in-Place Concrete."

B. Related Requirements:

1. Section 03 30 00 "Cast-in-Place Concrete" for concrete not designated as polished concrete.

1.3 DEFINITIONS

A. Design Reference Sample: Sample designated by Architect in the Contract Documents that reflects acceptable surface quality and appearance of polished concrete.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Polishing Schedule: Submit plan showing polished concrete surfaces and schedule of polishing operations for each area of polished concrete before start of polishing operations. Include locations of all joints, including construction joints.

C. Samples for Initial Selection: For each type of product requiring color selection.

D. Samples for Verification: For each type of exposed color.

1.5 INFORMATIONAL SUBMITTALS

A. Qualification Data: For Installer.

B. Material Certificates: For each of the following, signed by manufacturers:

1. Repair materials. 2. Liquid floor treatments.




A. Field Sample Panels: After approval of verification sample and before casting concrete, produce field sample panels to demonstrate the approved range of selections made under Sample submittals. Produce a minimum of three sets of full-scale panels, approximately 48 by 48 inches minimum, to demonstrate the expected range of finish, color, and appearance variations.

1. Locate panels as indicated or, if not indicated, as directed by Architect. 2. Maintain field sample panels during construction in an undisturbed condition as a

standard for judging the completed Work. 3. Demolish and remove field sample panels when directed.

B. Mockups: Before casting concrete, build mockups to verify selections made under Sample submittals and to demonstrate typical joints, surface finish, tolerances, and standard of workmanship. Build mockups to comply with the following requirements, using materials indicated for the completed Work:

1. Build mockups in the location and of the size indicated or, if not indicated, as directed by Architect.

2. Demonstrate curing, finishing, and protecting of polished concrete. 3. Subject to compliance with requirements, approved mockups may become part of the

completed Work if undisturbed at time of Substantial Completion.

1.7 FIELD CONDITIONS

A. Traffic Control: Maintain access for vehicular and pedestrian traffic as required for other construction activities.

PART 2 - PRODUCTS

2.1 LIQUID FLOOR TREATMENTS

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

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Advanced Floor Products. b. ARDEX Americas. c. AWRC Corporation. d. Euclid Chemical Company (The); an RPM company. e. L&M Construction Chemicals, Inc. f. PROSOCO, Inc.

http://www.specagent.com/Lookup?ulid=11249

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PART 3 - EXECUTION

3.1 POLISHING

A. Polish: Level 3: High sheen, 1500 grit.

B. Apply polished concrete finish system to cured and prepared slabs to match accepted mockup.

1. Machine grind floor surfaces to receive polished finishes level and smooth. 2. Apply reactive stain for polished concrete in polishing sequence and according to

manufacturer's written instructions. 3. Apply penetrating liquid floor treatment for polished concrete in polishing sequence and

according to manufacturer's written instructions, allowing recommended drying time between successive coats.

4. Continue polishing with progressively finer-grit diamond polishing pads to gloss level, to match approved mockup.

5. Control and dispose of waste products produced by grinding and polishing operations. 6. Neutralize and clean polished floor surfaces.


TPW.027 – FAWCETT WMA SECTION 03 40 00 - 1 OF 6 100% CD’s CONSTRUCTION JOINTS AND WATERSTOPS

SECTION 03 40 00

CONSTRUCTION JOINTS AND WATERSTOPS

PART 1 GENERAL

1.1 SUMMARY

A. Install construction joints, expansion joints, and place waterstops where shown on the Drawings, as specified herein, and as needed for a complete and proper installation.

1.2 SUBMITTALS

A. Product data: Within 30 calendar days after the Contractor has received the Owner's

Notice to Proceed, submit:

1. Materials list of items proposed to be provided under this Section;

2. Manufacturer's specifications and other data needed to prove compliance with the specified requirements.

1.3 QUALITY ASSURANCE:

A. Use adequate numbers of skilled workmen who are thoroughly trained and experienced

in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

PART 2 PRODUCTS

2.1 POLYVINYL PLASTIC WATERSTOP

A. Waterstops shall be installed in all construction joints with water or other liquid on one

side of joint and at other locations as required by the Plans.

B. All waterstops shall be continuous throughout their length.

C. Pre-molded expansion joint filler strips shall be non-extruding type conforming to current AASHTO Designation M153.

D. The waterstops shall be heavy duty polyvinyl waterstop conforming to Corps of

Engineers Specification CRD-C-572, latest edition, as manufactured by:

1. Serviced Products Division of W.R. Grace and Company;

2. Vinylstops by Sonneborn-Contech; W.R. Meadows, Inc.;

3. Vinylex Corporation;

4. or an approved equal of the same type and material and approximately equal in dimensions and weight but not necessarily of exactly the same shape.


E. Waterstops shall be "Rib Type" with a center bulb, 4-inches wide, capable of resisting a maximum pressure load of 65 feet of water, unless otherwise shown on Plans.

F. "Expansion Type" waterstops shall be of ribbed construction, 6-inches wide, with a

capacity for 1-inch of movement.

G. All waterstops shall be installed so that ½ its width will be embedded on one side of the joint and ½ on the other.

H. The Contractor shall employ a method of holding the waterstop in position for the first

pour that is satisfactory to the Engineer.

I. The method selected must insure that the waterstop will be held securely in true vertical or horizontal position and in straight alignment in the joint.

J. Care shall be exercised to insure that the waterstop is completely encompassed in good

mortar.

PART 3 EXECUTION

3.1 JOINTS IN WATERSTOPS

A. All waterstops shall be continuous and so joined at all points of contact in the same plane, or at intersections with waterstops in different planes, as to form a complete barrier to the passage of water through any construction, contraction, or expansion joint.

B. Joints in the waterstops, whether made for the purpose of continuity in a straight strip or

for the purpose of securing a watertight junction between strips in different planes, shall be made by heat welding as hereinafter specified.

C. Joints in PVC waterstops shall be made by heating the two surfaces to be jointed until the

material has softened to the point where it is just short of being fluid and then bringing the two softened surfaces together with a slight rubbing motion followed by firmly pressing them together so that a solid and tight bond is made.

D. The joints in strips of waterstop made in the above manner shall be such that the entire

cross section of the joint shall be dense, homogenous and free of all porosity. All finished joints shall have a tensile strength of not less than 75 percent of the material of the strip as extruded.

E. The heating of the surfaces to be joined shall be done by means of an electric splicing iron

designed for the specified purpose and controlled by means of a voltage regulator.

F. In use, the heat of the hot plate shall be so regulated as to prevent too rapid melting and accompanying charring of the waterstop material.

G. The use of makeshift hot plates will not be permitted nor will other means of heating the

strips to be joined be allowed except in a case of emergency, as determined by the Engineer.


H. The Contractor shall provide such jigs as will assist in making the joints in a proper and workmanlike manner and in holding the strips so that the alignment of jointed strips is correct and angles are true to those required.

I. Prior to embedment, all joints in the waterstop strips will be inspected by the Engineer

and any found defective shall be remedied without delay.

3.2 PROTECTION OF WATERSTOP BETWEEN POURS

A. The Contractor shall take such steps as are necessary to protect exposed waterstops in the interim period between concrete pours.

3.3 EXPANSION JOINTS

A. Expansion joints of the size and type shown on the Plans, or specified herein, shall be

placed in concrete pavement or structure as shown on the Plans.

B. Preformed Asphalt Fiber Joint Material:

1. Asphalt fiber sheet filler shall consist of preformed strips of inert material impregnated with asphalt.

2. It shall be of the thickness shown on the Plans or indicated in these Specifications.

C. The sheet filler shall conform to the requirements of AASHTO Specification M-59 with the

following additional provisions.

D. The sheet filler shall be of such character that it will not be deformed by ordinary handling during hot weather nor become hard and brittle in cold weather. It shall be of a tough, resilient, durable material not affected by weathering.

E. Hot Poured Rubberized Tar Joint Sealer:

1. Hot poured rubberized mastic sealer shall consist of a mixture of durable, elastic

rubber, coal tar pitch, and other materials which will form a resilient and adhesive compound capable of effectively sealing concrete joint surfaces against repeated expansion and contraction.

2. The material shall be installed in accordance with the manufacturer's directions.

3.4 CONSTRUCTION JOINTS

A. Location of all construction joints shall be approved by the Engineer.

B. Maximum length of wall pours shall be 40 feet.

C. Maximum height of wall pours shall be 18 feet.

D. In water tight structures, continuous PVC waterstop shall be provided in the construction

joints or as shown on the plans.


E. Bottom slabs and wall footings for concrete structures that will hold water shall be poured monolithically without cold joints or other discontinuities or weakened areas.

F. Radial control joints consisting of ½ inch to ¾ inch wide troweled grooves shall be required

at 60° increments in circular slabs.

G. Such joints shall be caulked with epoxy joint sealer after the concrete is cured and prior to placement of grout topping if required.

H. All cracks greater than 0.05-inches wide not located in control joints shall be sealed by

cutting a bevel groove on the water side of the crack ½ inch to ¾ inch wide and caulking with epoxy sealant.

I. Crack widths shall be measured at the concrete surface.

1. Construction joints shall be formed as indicated on the Drawings or as approved

or directed by the Engineer.

2. Where indicated or required, dowel rods shall be used.

3. All concrete at the joints shall have been in place not less than 12 hours, and longer if so directed by the Engineer, before concrete resting thereon is placed.

4. Before placing is resumed or commenced, excess water and laitance shall be

removed and concrete shall be cut away where necessary to insure a strong, dense concrete at the joint.

5. In order to secure adequate bond, the surface of concrete already in place shall

be cleaned, roughened, and then spread with a ½” layer of mortar of the same cement-sand ratio as is used in the concrete, immediately before the new concrete is deposited.

6. The unit of operation is not to exceed 50 feet in any horizontal direction, unless

otherwise required by the Drawings or herein specified.

7. Construction joints, if required, shall be located near the mid-point spans for slabs, beams, or girders.

8. Joints in columns or piers shall be made at the underside of the deepest beam or

girder at least 5 hours before any overhead work is placed thereon.

9. Joints not shown or specified shall be so located as to least impair strength and appearance of work.

10. Vertical joints in wall footings shall be reduced to a minimum.

11. Placement of concrete shall be at such a rate that surfaces of concrete not carried

to joint levels will not have attained initial set before additional concrete is placed thereon.


12. Girders, beams, and slabs shall be placed in one operation. 13. To insure a level, straight joint in exposed vertical surfaces, a strip of dressed

lumber may be tacked to the inside of the forms at the construction joint.

14. The concrete shall be poured to a point 1” above the underside of the strip.

15. The strip shall be removed 1 hour after concrete has been placed, and any irregularities in the joint line leveled off with a wood float and all laitance removed.

3.5 ADHESIVE WATERSTOP

A. Adhesive waterstop shall be used only where specifically shown on the Plans, and is not

considered an acceptable alternative to PVC waterstop.

B. Preformed plastic waterstop shall meet or exceed all requirements of Federal Specification SS-S-00210, "Sealing Compound, Preformed Plastic for Expansion Joints", Type I or Type II.

1. Such plastic waterstop shall be equal to SYNKO-FLEX as manufactured by Synko-

Flex Products, Inc. Houston, Texas or equal and shall meet the following requirements.

C. The plastic waterstop shall be produced from blends of refined hydrocarbon resins and

plasticizing compounds reinforced with inert mineral filler, and shall contain no solvents, irritating fumes or obnoxious odors.

1. The plastic waterstop shall not depend on oxidizing, evaporating or chemical

action for its adhesive or cohesive strength.

2. It shall be supplied in extruded form of suitable cross-section and of a size to seal the joint areas of concrete sections.

3. The plastic waterstop shall be protected by a suitable removable two-piece

wrapper.

4. The two-piece wrapper shall be so designed that 2 may be removed longitudinally without disturbing the other half, to facilitate application of the sealing compound.


5. The flexible plastic waterstop shall also meet the requirements as stated in the following table:

Composition

Bitumen (petroleum plastic content)

Test Method

ASTM D 4

Min

50

Max

70 Ash-Inert Mineral Matter AASHTO T 111 30 50 Volatile Matter ASTM D 6 -- 2.0

Property Test Method Min Max

Specific Gravity @ 77°F. ASTM D 71 1.20 1.30 Ductility @ 77°F. (cm) ASTM D 113 5.0 -- Softening Point ASTM D 36 320°F -- Penetration 77°F. (150 gms) 5 sec. ASTM D 217 50 120

END OF SECTION

SECTION 03 10 00 CONCRETE FORMWORK

Documents

Transcript of SECTION 03 10 00 CONCRETE FORMWORK