Solicitation_18-235-SOL-00005.pdf
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Solicitation 18-235-SOL-00005. Individual Wastewater Disposal Systems and Water Service Systems for Native Americans, San Diego, Riverside, and northwest Imperial Counties, CA.
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SECTION B
PRICING
SCHEDULE
ITEM DESCRIPTION
ESTIMATED
QUANTITY UNIT UNIT PRICE
TOTAL
COST
1 Imported Pipe Embedment 4 YD3
2 Paved Utility Road Crossing (Open Cut) 60 LF 3 Solid Rock Removal 5 YD3
4 4-Inch PVC Water Main - C900, CL 150 1000 LF 5 2-inch Flush Hydrant Assembly 2 EA
Gate Valve and Box 6 A. 2-Inch 1 LS 7 B. 4-Inch 1 LS 8 Air Release Combination Valve 1 LS 9 Connection to Existing Water Main 2 EA
Water Serviceline 10 A. 1-Inch PE 2500 LF 11 B. 1-inch PVC 150 LF 12 D. 2-inch PVC 2000 LF
Water Service Connection 13 A. 1-Inch 13 EA 14 B. 2-Inch 2 EA 15 Connection to Existing Utilities 6 EA 16 House Connection without PRV 8 EA 17 House Connection with PRV 12 EA 18 Water Meter and Box 20 EA
Septic Tank 19 A. 1200-Gallon 13 EA 20 B. 1500-Gallon 6 EA 21 C. 1200-Gallon Traffic Rated 1 LS 22 Connection to Existing Septic Tank 2 EA 23 Septic Tank Manhole Riser 3 EA 24 Septic Tank Abandonment 3 EA 25 4-Inch PVC Solid Sewer Pipe 2400 LF 26 4-Inch PVC Sewer Service Cleanout 20 EA 27 Chamber Drainfield 4200 LF 28 Distribution Box 14 EA 29 Flow Divider 6 EA 30 Diversion Valve 1 LS 31 Screened Baffle 1 LS 32 Potholing 80 HR 33 Community Sewer Connection 2 EA 34 Mobilization/Demobilization 30 HR 35 Water Service Connection Fees ** EA ** ** 36 Sewer Service Connection Fees ** EA ** **
SUBTOTAL
* Dewatering prices will be negotiated on a site specific basis.
** Do not bid on connection fees. The cost of these fees will be reimbursed as indicated on each delivery order at the actual cost of the connection or permitting fees.
PRICING SCHEDULE - BASE YEAR
The following Bid Schedule is based on estimated quantities required to meet the specifications. The total extended prices shall be used for bid evaluation purposes only. The actual amount to be paid by the Government under the contract shall be computed on the actual quantities installed at the unit bid prices awarded. Work performed under the contract will be ordered by issuance of delivery orders in accordance with clause 52.216-18 Ordering (See Section I). The designated ordering office is the Contracting Office, Indian Health Service Service/California Area Office, Sacramento, CA.
Riverside, San Diego and northwest Imperial Counties Base Year (From Contract Award to one Year from Date of Award)
PRICING SCHEDULE - OPTION YEAR 1
ITEM DESCRIPTION
ESTIMATED
QUANTITY UNIT UNIT PRICE
TOTAL
COST
101 Imported Pipe Embedment - TP 02200 4 YD3
102 Paved Utility Road Crossing (Open Cut) - TP 02228 60 LF 103 Solid Rock Removal - TP 02229 5 YD3
104 4-Inch PVC Water Main - C900, CL 150 - TP 02667 1000 LF 105 2-inch Flush Hydrant Assembly - TP 02667 2 EA
Gate Valve and Box - TP 02667 106 A. 2-Inch 1 LS 107 B. 4-Inch 1 LS 108 Air Release Combination Valve - TP 02667 1 LS 109 Connection to Existing Water Main - TP 02667 2 EA
Water Serviceline - TP 02668 110 A. 1-Inch PE 2500 LF 111 B. 1-inch PVC 150 LF 112 D. 2-inch PVC 2000 LF
Water Service Connection - TP 02668 113 A. 1-Inch 13 EA 114 B. 2-Inch 2 EA 115 Connection to Existing Utilities - TP 02668 6 EA 116 House Connection without PRV- TP 02668 8 EA 117 House Connection with PRV- TP 02668 12 EA 118 Water Meter and Box - TP 02668 20 EA
Septic Tank - TP 02740 119 A. 1200-Gallon 13 EA 120 B. 1500-Gallon 6 EA 121 C. 1200-Gallon Traffic Rated 1 LS 122 Connection to Existing Septic Tank 2 EA 123 Septic Tank Manhole Riser - TP 02740 3 EA 124 Septic Tank Abandonment - TP 02740 3 EA 125 4-Inch PVC Solid Sewer Pipe - TP 02740 2800 LF 126 4-Inch PVC Sewer Service Cleanout - TP 02740 20 EA 127 Chamber Drainfield - TP 02740 4200 LF 128 Distribution Box - TP 02741 14 EA 129 Flow Divider - TP 02740 6 EA 130 Diversion Valve - TP 02740 1 LS 131 Screened Baffle - TP 02740 1 LS 132 Potholing - TP 02200 80 HR 133 Community Sewer Connection 2 EA 134 Mobilization/Demobilization 30 HR 135 Water Service Connection Fees ** EA ** ** 136 Sewer Service Connection Fees ** EA ** **
SUBTOTAL
* Dewatering prices will be negotiated on a site specific basis.
** Do not bid on connection fees. The cost of these fees will be reimbursed as indicated on each delivery order at the actual cost of the connection or permitting fees.
PRICING SCHEDULE - OPTION YEAR 2
ITEM DESCRIPTION
ESTIMATED
QUANTITY UNIT UNIT PRICE
TOTAL
COST
201 Imported Pipe Embedment - TP 02200 4 YD3
202 Paved Utility Road Crossing (Open Cut) - TP 02228 60 LF 203 Solid Rock Removal - TP 02229 5 YD3
204 4-Inch PVC Water Main - C900, CL 150 - TP 02667 1000 LF 205 2-inch Flush Hydrant Assembly - TP 02667 2 EA
Gate Valve and Box - TP 02667 206 A. 2-Inch 1 LS 207 B. 4-Inch 1 LS 208 Air Release Combination Valve - TP 02667 1 LS 209 Connection to Existing Water Main - TP 02667 2 EA
Water Serviceline - TP 02668 210 A. 1-Inch PE 2500 LF 211 B. 1-inch PVC 150 LF 212 D. 2-inch PVC 2000 LF
Water Service Connection - TP 02668 213 A. 1-Inch 13 EA 214 B. 2-Inch 2 EA 215 Connection to Existing Utilities - TP 02668 6 EA 216 House Connection without PRV- TP 02668 8 EA 217 House Connection with PRV- TP 02668 12 EA 218 Water Meter and Box - TP 02668 20 EA
Septic Tank - TP 02740 219 A. 1200-Gallon 13 EA 220 B. 1500-Gallon 6 EA 221 C. 1200-Gallon Traffic Rated 1 LS 222 Connection to Existing Septic Tank 2 EA 223 Septic Tank Manhole Riser - TP 02740 3 EA 224 Septic Tank Abandonment - TP 02740 3 EA 225 4-Inch PVC Solid Sewer Pipe - TP 02740 2800 LF 226 4-Inch PVC Sewer Service Cleanout - TP 02740 20 EA 227 Chamber Drainfield - TP 02740 4200 LF 228 Distribution Box - TP 02741 14 EA 229 Flow Divider - TP 02740 6 EA 230 Diversion Valve - TP 02740 1 LS 231 Screened Baffle - TP 02740 1 LS 232 Potholing - TP 02200 80 HR 233 Community Sewer Connection 2 EA 234 Mobilization/Demobilization 30 HR 235 Water Service Connection Fees ** EA ** ** 236 Sewer Service Connection Fees ** EA ** **
SUBTOTAL
* Dewatering prices will be negotiated on a site specific basis.
** Do not bid on connection fees. The cost of these fees will be reimbursed as indicated on each delivery order at the actual cost of the connection or permitting fees.
ESTIMATE SUMMARY: TOTAL BASE YEAR:
TOTAL OPTION YEAR 1:
TOTAL OPTION YEAR 2:
TOTAL BID
Engineer's estimate based on the following assumptions 2 paved road crossing 20 homes served off of requirements (rest served TFA or tribal procurement)
150 feet of service line per home 120 feet of solid sewer pipe per home average of 210 feet of chamber per home
PRICING SCHEDULE NOTES
1. Prices must be submitted on all individual items of this CLIN schedule. Failure to do so may cause the proposal to be determined “unacceptable.”
2. If a modification to a price is submitted which provides for a lump sum adjustment to the total price, the application of the lump sum adjustment to each item in the CLIN schedule must be stated. If it is not stated, the Offeror/Bidder agrees that the lump sum adjustment shall be applied on a pro rata basis to every item in the CLIN schedule.
3. The Offeror/Bidder shall distribute his indirect costs (overhead, profit, bond, etc.) over all the items in the CLIN schedule. The Government will review all submitted schedules for any unbalancing of the items. Any submitted CLIN schedule determined to be unbalanced may cause the proposal to be determined “unacceptable.”
4. In the event, if there is a difference between a unit price and the extended total, the unit price will be held to the intended proposed price. If the Offeror/Bidder shows only the total price but fails to enter a unit price, the total divided by the estimated quantity will be held to be the intended unit price.
5. Arithmetic Discrepancies. For the purpose of bid evaluation, the Government will proceed on the assumption that the bidder(s) intends their bid to be evaluated based on unit prices, the totals arrived at by resolution of arithmetic discrepancies as provided below and the bid will be so reflected on the abstract of bids. These correction procedures shall not be used to resolve any ambiguity concerning which bid is low. For the purpose of initial evaluation, the following will be utilized in resolving arithmetic discrepancies found on the face of the CLIN schedule as submitted by the bidder.
a. Obviously misplaced decimal points will be corrected;
b. Discrepancy between unit price and extended price, the unit price will govern;
c. Apparent errors in extension of unit prices will be corrected;
d. Apparent errors in addition of lump sum and extended prices will be corrected.
6. Dewatering prices will be negotiated on a site specific basis – annotated on the Pricing
Schedule with **.
7. Water Service Connection Fees and Sewer Service Connection Fees. The cost of these fees will be reimbursed as indicated on each delivery order at the actual cost of the connection or permitting fees – annotated on the Pricing Schedule with **.
8. FAR 52.211-18 Variation in Estimated Quantities. The following line items are estimated quantities and fall under the guidelines of FAR 52.211-18: Line Item * - annotated on the Pricing Schedule with *.
SECTION C
TECHNICAL
SPECIFICATION
Technical Provisions
Section Number Title
02 30 00 Cutting and Patching
03 10 00 Concrete Forming and Accessories
03 20 00 Concrete Reinforcing
03 30 00 Cast-In-Place Concrete
31 10 00 Site Clearing
31 23 16 Excavation
31 23 17 Trenching
31 23 18 Rock Removal
31 25 13 Erosion Controls
32 11 23 Aggregate Base Courses
32 12 16 Asphalt Paving
32 13 13 Concrete Paving
32 91 19 Landscape Grading
32 92 19 Seeding
33 05 17 Precast Valve Vaults and Meter Boxes
33 11 13 Water Distribution Mains
33 11 16 Water Distribution Valves and Hydrants
33 12 13 Water Service Connections
33 13 00 Disinfection of Water Distribution
33 31 00 Individual Sanitary Sewerage Piping
33 31 13 Community Sewerage Piping
33 36 00 Septic Tank Systems
California Area Indian Health Service Revised 6/6/2017
Cutting and Patching 02 30 00 - 1 of 2
SECTION 02 30 00
CUTTING AND PATCHING
PART 1 GENERAL
1.1 SUMMARY
A. Section Includes:
1. Cutting and Patching
2. Special Procedures
B. Related Sections:
1. Section 31 10 00 - Site Clearing: Clearing outside periphery of structures.
PART 2 PRODUCTS
Not Used.
PART 3 EXECUTION
3.1 CUTTING AND PATCHING
A. Employ skilled and experienced installer to perform cutting and patching.
B. Submit written request in advance of cutting or altering elements affecting:
1. Structural integrity of element.
2. Integrity of weather-exposed or moisture-resistant elements.
3. Efficiency, maintenance, or safety of element.
4. Work of Owner or separate contractor.
C. Execute cutting, fitting, and patching including excavation and fill, to complete Work, and to:
1. Fit the several parts together, to integrate with other Work.
2. Uncover Work to install or correct ill-timed Work.
3. Remove and replace defective and non-conforming Work.
4. Provide openings in elements of Work for penetrations of mechanical and electrical Work.
D. Execute work by methods to avoid damage to other Work, and to provide proper surfaces to receive patching and finishing.
E. Cut masonry and concrete materials using masonry saw or core drill.
F. Restore Work with new products in accordance with requirements of Contract Documents.
G. Fit Work tight to pipes, sleeves, ducts, conduit, and other penetrations through surfaces.
H. Maintain integrity of wall, ceiling, or floor construction; completely seal voids.
Cutting and Patching 02 30 00 - 2 of 2
I. At penetrations of fire rated walls, partitions, ceiling, or floor construction, completely seal voids with fire rated material in accordance with Contract specifications to full thickness of penetrated element.
J. Refinish surfaces to match adjacent finishes. For continuous surfaces, refinish to nearest intersection; for assembly, refinish entire unit.
K. Identify hazardous substances or conditions exposed during the Work to Engineer for decision or remedy.
3.2 SPECIAL PROCEDURES
A. Materials: As specified in product sections: match existing with new products for patching and extending work.
B. Employ skilled and experienced installer to perform alteration work.
C. Cut, move, or remove items as necessary for access to alterations and renovation Work. Replace and restore at completion.
D. Remove unsuitable material not marked for salvage, including rotted wood, corroded metals, and deteriorated masonry and concrete. Replace materials as specified for finished Work.
E. Close openings in exterior surfaces to protect existing work from weather and extremes of temperature and humidity.
F. Remove, cut, and patch Work in manner to minimize damage and to permit restoring products and finishes to original condition.
G. Refinish existing visible surfaces to remain in renovated rooms and spaces, to renewed condition for each material, with neat transition to adjacent finishes.
H. Where new Work abuts or aligns with existing, provide smooth and even transition. Patch Work to match existing adjacent Work in texture and appearance.
I. When finished surfaces are cut so that smooth transition with new Work is not possible, terminate existing surface along straight line at natural line of division and submit recommendation to Engineer for review.
J. Where change of plane of ¼ inch or more occurs, submit recommendation for providing smooth transition to Engineer for review.
K. Trim existing doors to clear new floor finish. Refinish trim to original condition.
L. Finish surfaces as specified in individual product sections.
END OF SECTION
California Area Indian Health Service Revised 7/27/2017
Concrete Forming and Accessories 03 10 00 - 1 of 6
SECTION 03 10 00
CONCRETE FORMING AND ACCESSORIES
PART 1 GENERAL
1.1 SUMMARY
A. Section Includes:
1. Formwork for cast-in place concrete.
2. Shoring, bracing, and anchorage.
3. Form accessories.
4. Form stripping.
B. Related Sections:
1. Section 03 20 00 - Concrete Reinforcing.
2. Section 03 30 00 - Cast-In-Place Concrete.
3. Section 04 20 00 - Unit Masonry: Product requirements for masonry accessories for placement by this Section.
1.2 REFERENCES
A. American Concrete Institute:
1. ACI 301 - Specifications for Structural Concrete.
2. ACI 318 - Building Code Requirements for Structural Concrete.
3. ACI 347 - Guide to Formwork for Concrete.
1.3 DESIGN REQUIREMENTS
A. Design, engineer and construct formwork, shoring and bracing in accordance with ACI 347, to conform to design and applicable code requirements to achieve concrete shape, line and dimension as indicated on Drawings.
1.4 SUBMITTALS
A. Section 01 33 00 - Submittal Procedures: Requirements for submittals.
B. Shop Drawings, if required in specifications:
1. Submit formwork, shoring, and reshoring shop drawings.
2. Indicate the following:
a. Pertinent dimensions, openings, methods of construction, types of connections, materials, joint arrangement and details, ties and shores, location of framing, studding and bracing, and temporary supports.
1.5 QUALITY ASSURANCE
A. Perform Work in accordance with ACI 301.
03 10 00 - 2 of 6
1.6 DELIVERY, STORAGE, AND HANDLING
A. Section 01 60 00 - Product Requirements: Products storage and handling requirements.
B. Deliver void forms and installation instructions in manufacturer's packaging.
C. Store off ground in ventilated and protected manner to prevent deterioration from moisture.
1.7 COORDINATION
A. Section 01 30 00 - Administrative Requirements: Coordination and project conditions.
B. Coordinate this Section with other sections of work, requiring attachment of components to formwork.
PART 2 PRODUCTS
2.1 WOOD FORM MATERIALS
A. Form Materials: At discretion of Contractor.
2.2 FORMWORK ACCESSORIES
A. Spreaders: Standard, non-corrosive metal form clamp assembly, of type acting as spreaders and leaving no metal within 1 inch of concrete face. Wire ties, wood spreaders or through bolts are not permitted.
B. Form Anchors and Hangers:
1. Do not use anchors and hangers exposed concrete leaving exposed metal at concrete surface.
2. Symmetrically arrange hangers supporting forms from structural steel members to minimize twisting or rotation of member.
3. Penetration of structural steel members is not permitted.
C. Form Release Agent: Colorless mineral oil that will not stain concrete, or absorb moisture.
1. Manufacturers:
a. Nox-Crete Company Nox-Crete Form Coating.
b. Substitutions Permitted: Section 01 60 00 - Product Requirements
D. Vapor Retarder: Where indicated on Drawings, 8 mil thick polyethylene sheet.
E. Nails, Spikes, Lag Bolts, Through Bolts, Anchorages: Size, strength and character to maintain formwork in place while placing concrete.
PART 3 EXECUTION
3.1 EXAMINATION
A. Section 01 30 00 - Administrative Requirements: Coordination and project conditions.
03 10 00 - 3 of 6
B. Verify lines, levels, and centers before proceeding with formwork. Verify dimensions agree with Drawings.
C. When formwork is placed after reinforcement resulting in insufficient concrete cover over reinforcement before proceeding, request instructions from Engineer.
3.2 INSTALLATION
A. Earth Forms:
1. Earth forms are not permitted, unless required to ensure native soil bearing on exposed concrete face.
B. Formwork - General:
1. Provide top form for sloped surfaces steeper than 1.5 horizontal to 1 vertical to hold shape of concrete during placement, unless it can be demonstrated that top forms can be omitted.
2. Construct forms to correct shape and dimensions, mortar-tight, braced, and of sufficient strength to maintain shape and position under imposed loads from construction operations.
3. Camber forms where necessary to produce level finished soffits unless otherwise shown on
Drawings.
4. Carefully verify horizontal and vertical positions of forms. Correct misaligned or misplaced forms before placing concrete.
5. Complete wedging and bracing before placing concrete.
C. Forms for Smooth Finish Concrete:
1. Use steel, plywood or lined board forms.
2. Use clean and smooth plywood and form liners, uniform in size, and free from surface and edge damage capable of affecting resulting concrete finish.
3. Install form lining with close-fitting square joints between separate sheets without springing into place.
4. Use full size sheets of form lines and plywood wherever possible.
5. Tape joints to prevent protrusions in concrete.
6. Use care in forming and stripping wood forms to protect corners and edges.
7. Level and continue horizontal joints.
8. Keep wood forms wet until stripped.
D. Framing, Studding and Bracing:
1. Space studs at 16 inches on center maximum for boards and 12 inches on center maximum for plywood.
2. Size framing, bracing, centering, and supporting members with sufficient strength to maintain shape and position under imposed loads from construction operations.
3. Construct beam soffits of material minimum of 2 inches thick.
4. Distribute bracing loads over base area on which bracing is erected.
5. When placed on ground, protect against undermining, settlement or accidental impact.
E. Erect formwork, shoring, and bracing to achieve design requirements, in accordance with requirements of ACI 301.
F. Arrange and assemble formwork to permit dismantling and stripping. Do not damage concrete during stripping. Permit removal of remaining principal shores.
03 10 00 - 4 of 6
G. Obtain Engineer’s approval before framing openings in structural members not indicated on Drawings.
H. Install void forms in accordance with manufacturer's recommendations.
I. Do not reuse formwork more than three times for concrete surfaces to be exposed to view. Do not patch formwork.
3.3 APPLICATION - FORM RELEASE AGENT
A. Apply form release agent on formwork in accordance with manufacturer's recommendations.
B. Apply prior to placement of reinforcing steel, anchoring devices, and embedded items.
C. Do not apply form release agent where concrete surfaces are indicated to receive special finishes that are affected by agent. Soak inside surfaces of untreated forms with clean water. Keep surfaces coated prior to placement of concrete.
D. Reuse and Coating of Forms: Thoroughly clean forms and reapply form coating before each reuse. For exposed work, do not reuse forms with damaged faces or edges. Apply form coating to forms in accordance with manufacturer’s specifications. Do not coat forms for concrete indicated to receive “scored finish”. Apply form coatings before placing reinforcing steel.
3.4 INSTALLATION - INSERTS, EMBEDDED PARTS, AND OPENINGS
A. Install formed openings for items to be embedded in or passing through concrete work.
B. Locate and set in place items required to be cast directly into concrete.
C. Coordinate with Work of other sections in forming and placing openings, slots, recesses, sleeves, bolts, anchors, other inserts, and components of other Work.
D. Install accessories straight, level, and plumb. Ensure items are not disturbed during concrete placement.
E. Install water stops continuous without displacing reinforcement.
F. Provide temporary ports or openings in formwork where required to facilitate cleaning and inspection. Locate openings at bottom of forms to allow flushing water to drain.
G. Close temporary openings with tight fitting panels, flush with inside face of forms, and neatly fitted so joints will not be apparent in exposed concrete surfaces.
H. Form Ties:
1. Use sufficient strength and sufficient quantity to prevent spreading of forms.
2. Place ties at least 1 inch away from finished surface of concrete.
3. Leave inner rods in concrete when forms are stripped.
4. Space form ties equidistant, symmetrical and aligned vertically and horizontally unless otherwise shown on Drawings.
03 10 00 - 5 of 6
I. Arrangement: Arrange formwork to allow proper erection sequence and to permit form removal without damage to concrete.
J. Construction Joints:
1. Install surfaced pouring strip where construction joints intersect exposed surfaces to provide straight line at joints.
2. Just prior to subsequent concrete placement, remove strip and tighten forms to conceal shrinkage.
3. Show no overlapping of construction joints. Construct joints to present same appearance as butted plywood joints.
4. Arrange joints in continuous line straight, true and sharp.
K. Embedded Items:
1. Make provisions for pipes, sleeves, anchors, inserts, reglets, anchor slots, nailers, water stops, and other features.
2. Do not embed wood or uncoated aluminum in concrete.
3. Obtain installation and setting information for embedded items furnished under other
Specification sections.
4. Securely anchor embedded items in correct location and alignment prior to placing concrete.
5. Verify conduits and pipes, including those made of coated aluminum, meet requirements of
ACI 318 for size and location limitations.
L. Openings for Items Passing Through Concrete:
1. Frame openings in concrete where indicated on Drawings. Establish exact locations, sizes, and other conditions required for openings and attachment of work specified under other sections.
2. Coordinate work to avoid cutting and patching of concrete after placement.
3. Perform cutting and repairing of concrete required as result of failure to provide required openings.
M. Screeds:
1. Set screeds and establish levels for tops of concrete slabs and levels for finish on slabs.
2. Slope slabs to drain where required or as shown on Drawings.
3. Before depositing concrete, remove debris from space to be occupied by concrete and thoroughly wet forms. Remove freestanding water.
N. Screed Supports:
1. For concrete over waterproof membranes and vapor retarder membranes, use cradle, pad or base type screed supports which will not puncture membrane.
2. Staking through membrane is not be permitted.
O. Cleanouts and Access Panels:
1. Provide removable cleanout sections or access panels at bottoms of forms to permit inspection and effective cleaning of loose dirt, debris and waste material.
2. Clean forms and surfaces against which concrete is to be placed. Remove chips, saw dust and other debris. Thoroughly blow out forms with compressed air just before concrete is placed.
03 10 00 - 6 of 6
3.5 FORM CLEANING
A. Clean forms as erection proceeds, to remove foreign matter within forms.
B. Clean formed cavities of debris prior to placing concrete.
C. Flush with water or use compressed air to remove remaining foreign matter. Ensure that water and debris drain to exterior through clean-out ports.
D. During cold weather, remove ice and snow from within forms. Do not use de-icing salts. Do not use water to clean out forms, unless formwork and concrete construction proceed within heated enclosure. Use compressed air or other means to remove foreign matter.
3.6 FORM REMOVAL
A. Do not remove forms or bracing until concrete has gained sufficient strength to carry its own weight and imposed loads and removal has been approved by Engineer.
B. Loosen forms carefully. Do not wedge pry bars, hammers, or tools against finish concrete surfaces scheduled for exposure to view.
C. Store removed forms in manner that surfaces to be in contact with fresh concrete will not be damaged. Discard damaged forms.
D. Leave forms in place for minimum 7 days. Forms may be removed in fewer number of days as specified in ACI 347 with approval of Engineer.
3.7 ERECTION TOLERANCES
A. Construct formwork to maintain tolerances required by ACI 301.
3.8 FIELD QUALITY CONTROL
A. Section 01 40 00 - Quality Requirements and 01 70 00 - Execution and Closeout Requirements:
Field inspecting, testing, adjusting, and balancing.
B. Inspect erected formwork, shoring, and bracing to ensure that work is in accordance with formwork design, and that supports, fastenings, wedges, ties, and items are secure.
C. Notify Engineer after placement of reinforcing steel in forms, but prior to placing concrete. Refer to Section 03 20 00 for required minimum concrete cover over reinforcement.
D. Schedule concrete placement to permit formwork inspection before placing concrete.
Concrete Reinforcing 03 20 00 - 1 of 4
SECTION 03 20 00
CONCRETE REINFORCING
PART 1 GENERAL
1.1 SUMMARY
A. Section Includes:
1. Reinforcing bars.
2. Welded wire fabric.
3. Reinforcement accessories.
B. Related Sections:
1. Section 03 10 00 - Concrete Forming and Accessories.
2. Section 03 30 00 - Cast-In-Place Concrete.
1.2 REFERENCES
A. American Concrete Institute:
1. ACI 301 - Specifications for Structural Concrete.
2. ACI 318 - Building Code Requirements for Structural Concrete.
3. ACI 530.1 - Specifications for Masonry Structures.
4. ACI SP-66 - ACI Detailing Manual.
B. ASTM International:
1. ASTM A82 - Standard Specification for Steel Wire, Plain, for Concrete Reinforcement.
2. ASTM A185 - Standard Specification for Steel Welded Wire Reinforcement, Plain, for
Concrete.
3. ASTM A496 - Standard Specification for Steel Wire, Deformed, for Concrete
Reinforcement.
4. ASTM A497 - Standard Specification for Steel Welded Wire Fabric, Deformed, for
Concrete Reinforcement.
5. ASTM A615 - Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete
Reinforcement.
6. ASTM A704 - Standard Specification for Welded Steel Plain Bar or Rod Mats for Concrete
Reinforcement.
7. ASTM A706 - Standard Specification for Low-Alloy Steel Deformed and Plain Bars for
Concrete Reinforcement.
8. ASTM A775 - Standard Specification for Epoxy-Coated Steel Reinforcing Bars.
9. ASTM A884 - Standard Specification for Epoxy-Coated Steel Wire and Welded Wire
Reinforcement.
C. American Welding Society:
1. AWS D1.4 - Structural Welding Code - Reinforcing Steel.
D. Concrete Reinforcing Steel Institute:
1. CRSI - Manual of Standard Practice.
03 20 00 - 2 of 4
2. CRSI - Placing Reinforcing Bars.
1.3 SUBMITTALS
A. Section 01 33 00 - Submittal Procedures.
B. Shop Drawings, if required in specifications: Indicate bar sizes, spacings, locations, and quantities of reinforcing steel and welded wire fabric, bending and cutting schedules, and supporting and spacing devices.
1.4 QUALITY ASSURANCE
A. Perform Work in accordance with CRSI - Manual of Standard Practice and ACI 301.
B. Prepare shop drawings in accordance with ACI SP-66.
PART 2 PRODUCTS
2.1 REINFORCEMENT
A. Reinforcing Steel: ASTM A615, 60 ksi yield grade, plain or deformed billet bars, uncoated or epoxy coated finish.
B. Plain Bar Mats: ASTM A704; fabricated from ASTM A615 or ASTM A706; 60 ksi yield strength, steel bars, unfinished or epoxy coated finish.
C. Deformed Wire: ASTM A496; unfinished or epoxy coated finish.
D. Plain Wire: ASTM A82; unfinished or epoxy coated finish.
E. Welded Deformed Wire Fabric: ASTM A497; in flat sheets or coiled rolls; unfinished or epoxy coated finish.
F. Welded Plain Wire Fabric: ASTM A185; in flat sheets or coiled rolls; unfinished or epoxy coated finish.
2.2 ACCESSORY MATERIALS
A. Tie Wire: Minimum 16 gage annealed type.
B. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for strength and support of reinforcement during concrete placement conditions. Must be manufactured products used as recommended by manufacturer. Stones, rebar pieces or other materials are not acceptable replacements.
C. Special Chairs, Bolsters, Bar Supports, Spacers Adjacent to Weather Exposed Concrete Surfaces:
Plastic tipped steel type; size and shape to meet Project conditions.
03 20 00 - 3 of 4
D. Reinforcing Splicing Devices (where required): Exothermic welding type; full tension and compression; sized to fit joined reinforcing.
E. Epoxy Coating Patching Material: Type as recommended by coating manufacturer.
2.3 FABRICATION
A. Fabricate concrete reinforcement in accordance with CRSI Manual of Practice.
B. Form standard hooks for 180 degree bends, 90 degree bends, stirrup and tie hooks, and seismic hooks as indicated on Drawings.
C. Form reinforcement bends with minimum diameters in accordance with ACI 318.
D. Fabricate column reinforcement with offset bends at reinforcement splices.
E. Form spiral column reinforcement from minimum 3/8 inch diameter continuous plain or deformed bar or wire.
F. Form ties and stirrups from the following:
1. For bars No. 10 and Smaller: No. 3 deformed bars.
2. For bars No. 11 and Larger: No. 4 deformed bars.
G. Where required, weld reinforcement in accordance with AWS D1.4.
H. Galvanized and Epoxy-Coated Reinforcement: Where required, clean surfaces, weld and re-protect welded joint in accordance with CRSI.
I. Locate reinforcement splices not indicated on Drawings, at point of minimum stress.
2.4 SHOP FINISHING
A. Epoxy Coated Finish for Steel Bars: ASTM A775.
B. Epoxy Coated Finish for Steel Wire: ASTM A884; Class A using ASTM A775.
PART 3 EXECUTION
3.1 PLACEMENT
A. Place, support and secure reinforcement against displacement. Do not deviate from required position beyond specified tolerance.
1. Do not weld crossing reinforcement bars for assembly.
B. Do not displace or damage vapor retarder.
C. Accommodate placement of formed openings.
03 20 00 - 4 of 4
D. Space reinforcement bars with minimum clear spacing of one bar diameter, but not less than 1 inch.
1. Where bars are indicated in multiple layers, place upper bars directly above lower bars.
E. Maintain concrete cover around reinforcement in accordance with ACI 318 as follows:
Reinforcement Location Minimum Concrete Cover
Footings and Concrete Formed Against Earth 3 inches
Concrete exposed to earth or weather
No. 6 bars and larger 2 inches
No. 5 bars and smaller 1-1/2 inches
Supported Slabs, Walls, and Joists
No. 14 bars and larger 1-1/2 inches
No. 11 bars and smaller 3/4 inches
F. Splice reinforcing in accordance with splicing device manufacturer’s instructions.
3.2 ERECTION TOLERANCES
A. Section 01 40 00 - Quality Requirements: Tolerances.
B. Install reinforcement within the following tolerances for flexural members, walls, and compression members:
Reinforcement Depth Depth Tolerance Concrete Cover Tolerance
Greater than 8 inches plus or minus 3/8 inch minus 3/8 inch
Less than 8 inches plus or minus 1/2 inch minus 1/2 inch
C. Install reinforcement within the tolerances specified in ACI 530.1 for foundation walls.
3.3 FIELD QUALITY CONTROL
A. Sections 01 40 00 - Quality Requirements and 01 70 00 - Execution and Closeout Requirements:
Field inspecting, testing, adjusting, and balancing.
B. Reinforcement Inspection: Inspect for correct materials, fabrication, sizes, locations, spacing, concrete cover, and splicing.
Cast-In-Place Concrete 03 30 00 - 1 of 11
SECTION 03 30 00
CAST-IN-PLACE CONCRETE
PART 1 GENERAL
1.1 SUMMARY
A. Section includes cast-in-place concrete for the following:
1. Foundation walls.
2. Supported slabs.
3. Slabs on grade.
4. Control, expansion and contraction joint devices.
5. Equipment pads.
6. Thrust blocks.
7. Manholes.
B. Related Sections:
1. Section 03 10 00 - Concrete Forming and Accessories: Formwork and accessories.
2. Section 03 20 00 - Concrete Reinforcing.
3. Section 03 35 00 - Concrete Finishing.
4. Section 03 39 00 - Concrete Curing.
1.2 REFERENCES
A. American Concrete Institute:
1. ACI 301 - Specifications for Structural Concrete.
2. ACI 305 - Hot Weather Concreting.
3. ACI 306.1 - Standard Specification for Cold Weather Concreting.
4. ACI 308.1 - Standard Specification for Curing Concrete.
5. ACI 318 - Building Code Requirements for Structural Concrete.
6. ACI 347 - Guide to Formwork for Concrete.
B. ASTM International:
1. ASTM A82 - Standard Specification for Steel Wire, Plain, for Concrete Reinforcement.
2. ASTM A185 - Standard Specification for Steel Welded Wire Reinforcement, Plain, for
Concrete.
3. ASTM A496 - Standard Specification for Steel Wire, Deformed, for Concrete
Reinforcement.
4. ASTM A497 - Standard Specification for Steel Welded Wire Fabric, Deformed, for
Concrete Reinforcement.
5. ASTM A615 - Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete
Reinforcement.
6. ASTM A704 - Standard Specification for Welded Steel Plain Bar or Rod Mats for Concrete
Reinforcement.
7. ASTM A706 - Standard Specification for Low-Alloy Steel Deformed and Plain Bars for
Concrete Reinforcement.
03 30 00 - 2 of 11
8. ASTM C31 - Standard Practice for Making and Curing Concrete Test Specimens in the Field.
9. ASTM C33 - Standard Specification for Concrete Aggregates.
10. ASTM C39 - Standard Test Method for Compressive Strength of Cylindrical Concrete
Specimens.
11. ASTM C94 - Standard Specification for Ready-Mixed Concrete.
12. ASTM C143 - Standard Test Method for Slump of Hydraulic Cement Concrete.
13. ASTM C150 - Standard Specification for Portland Cement.
14. ASTM C171 - Standard Specification for Sheet Materials for Curing Concrete.
15. ASTM C172 - Standard Practice for Sampling Freshly Mixed Concrete.
16. ASTM C173 - Standard Test Method for Air Content of Freshly Mixed Concrete by the
Volumetric Method.
17. ASTM C260 - Standard Specification for Air-Entraining Admixtures for Concrete.
18. ASTM C309 - Standard Specification for Liquid Membrane-Forming Compounds for
Curing Concrete.
19. ASTM C494 - Standard Specification for Chemical Admixtures for Concrete.
20. ASTM C618 - Standard Specification for Coal Fly Ash and Raw or Calcined Natural
Pozzolan for Use as a Mineral Admixture in Concrete.
21. ASTM C1017 - Standard Specification for Chemical Admixtures for Use in Producing
Flowing Concrete.
22. ASTM C1064 - Standard Test Method for Temperature of Freshly Mixed Hydraulic-Cement
Concrete.
23. ASTM C1107 - Standard Specification for Packaged Dry, Hydraulic-Cement Grout
(Nonshrink).
24. ASTM D1751 - Standard Specification for Preformed Expansion Joint Filler for Concrete
Paving and Structural Construction (Nonextruding and Resilient Bituminous Types).
25. ASTM D6690 - Standard Specification for Joint and Crack Sealants, Hot Applied, for
Concrete and Asphalt Pavements.
26. ASTM E119 - Standard Test Methods for Fire Tests of Building Construction and Materials.
C. Concrete Reinforcing Steel Institute:
1. CRSI - Manual of Standard Practice.
2. CRSI - Placing Reinforcing Bars.
1.3 SUBMITTALS
A. Section 01 33 00 - Submittal Procedures: Submittal procedures.
B. Design Data:
1. Submit concrete mix design for each concrete strength. Submit separate mix designs when admixtures are required for the following:
a. Hot and cold weather concrete work.
b. Air entrained concrete work.
2. Identify mix ingredients and proportions, including admixtures.
3. Identify chloride content of admixtures and whether or not chloride was added during manufacture.
4. Identify minimum and maximum allowable slump for submitted concrete mix design.
03 30 00 - 3 of 11
C. Product Data: Submit data on curing compounds, mats, paper, film, compatibilities, and limitations.
1.4 CLOSEOUT SUBMITTALS
A. Section 01 70 00 - Execution and Closeout Requirements: Closeout procedures.
B. Project Record Documents: Accurately record actual locations of embedded utilities and components concealed from view in finished construction.
1.5 QUALITY ASSURANCE
A. Perform Work in accordance with ACI 301. Perform curing in accordance with ACI 318.
B. Conform to ACI 305 when concreting during hot weather.
C. Conform to ACI 306.1 when concreting during cold weather.
D. Acquire cement and aggregate from one source for Work.
E. Fire Rated Floor Construction: Rating as indicated on Drawings.
1. Tested Rating: Determined in accordance with ASTM E119.
1.6 ENVIRONMENTAL REQUIREMENTS
A. Section 01 60 00 - Product Requirements: Environmental conditions affecting products on site.
B. Maintain concrete temperature after installation at minimum 50 degrees F for minimum 7 days.
C. Maintain high early strength concrete temperature after installation at minimum 50 degrees F for minimum 3 days.
PART 2 PRODUCTS
2.1 CONCRETE MATERIALS
A. Cement: ASTM C150, Type I or IA – Normal or Type II or IIA – Moderate, unless otherwise specified in Drawings.
B. Normal Weight Aggregates: ASTM C33.
1. Coarse Aggregate Maximum Size: In accordance with ACI 318.
C. Water: ACI 318; potable, without deleterious amounts of chloride ions.
2.2 ADMIXTURES
A. Air Entrainment: ASTM C260.
B. Chemical: ASTM C494.
03 30 00 - 4 of 11
1. Type A - Water Reducing.
2. Type B - Retarding.
3. Type C - Accelerating. Chloride-based accelerators are not permitted.
4. Type D - Water Reducing and Retarding.
5. Type E - Water Reducing and Accelerating. Chloride-based accelerators are not permitted.
C. Fly Ash or Calcined Pozzolan: ASTM C618. Must be used in quantities not to exceed those specified in ACI C318.
D. Plasticizing: ASTM C1017.
E. Integral Waterproofing Admixtures: ASTM C494, Type S; complex catalyzed hydrous silicate, water and vapor proofing liquid admixture.
1. Basis of design product: Subject to compliance with requirements, provide Moxie
International, Moxie Shield 1800 Admixture, or equal.
2. Properties:
a. Water/Cement Ratio: Maximum 0.52.
b. Water Vapor Transmission: Less than 0.1 perms.
2.3 ACCESSORIES
A. Bonding Agent: Two component modified epoxy resin, Non-solvent two component polysulfide epoxy, Mineral filled polysulfide polymer epoxy, or Mineral filled polysulfide polymer epoxy resin.
B. Non-Shrink Grout: ASTM C1107; premixed compound consisting of non-metallic aggregate, cement, water reducing and plasticizing agents; capable of developing minimum compressive strength of 2,400 psi in 48 hours and 7,000 psi in 28 days.
2.4 JOINT DEVICES AND FILLER MATERIALS
A. Joint Filler Type A: ASTM D1751; Asphalt impregnated fiberboard or felt, ¼ inch or ½ inch thick; tongue and groove profile.
B. Expansion and Contraction Joint Devices: ASTM B221 alloy, extruded aluminum; resilient elastomeric filler strip with Shore A hardness of 35 to permit plus or minus 25 percent joint movement with full recovery.
C. Sealant: ASTM D6690, Type I.
2.5 WOOD FORM MATERIALS
A. Form Materials: At discretion of Contractor.
2.6 FORMWORK ACCESSORIES
A. Spreaders: Standard, non-corrosive metal form clamp assembly, of type acting as spreaders and leaving no metal within 1 inch of concrete face. Wire ties, wood spreaders or through bolts are not permitted.
03 30 00 - 5 of 11
2.7 REINFORCEMENT
A. Reinforcing Steel: ASTM A615, 60 ksi yield grade, plain or deformed billet bars, uncoated.
B. Plain Wire: ASTM A82; unfinished.
C. Welded Plain Wire Fabric: ASTM A185; in flat sheets or coiled rolls; unfinished.
2.8 REINFORCEMENT ACCESSORY MATERIALS
A. Tie Wire: Minimum 16 gage annealed type.
B. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for strength and support of reinforcement during concrete placement conditions. Must be manufactured products used as recommended by manufacturer. Stones, rebar pieces or other materials are not acceptable replacements.
2.9 CONCRETE MIX
A. Select proportions for concrete in accordance with ACI 318 trial mixtures.
B. Provide concrete to the following criteria:
Material and Property Measurement
Compressive Strength (7 day) 2,500 psi
Compressive Strength (28 day) 4,000 psi
Cement Type ASTM C150
Aggregate Type Normal weight
Aggregate Size (maximum) 1/5 of narrowest dimension between forms, or 2/3 of minimum clear spacing between reinforcing bars or between reinforcing bars and forms, whichever is smaller.
Air Content 4.0 percent plus or minus 2.0 percent
C. Admixtures: Include admixture types and quantities indicated in concrete mix designs only when approved by Engineer.
1. Use accelerating admixtures in cold weather. Use of admixtures will not relax cold weather placement requirements.
2. Do not use calcium chloride nor admixtures containing calcium chloride.
3. Use set retarding admixtures during hot weather.
4. Add air entrainment admixture to concrete mix for work exposed to freezing and thawing.
D. Ready Mixed Concrete: Mix and deliver concrete in accordance with ASTM C94.
03 30 00 - 6 of 11
E. Site Mixed Concrete: Mix concrete in accordance with ACI 318.
2.10 CURING MATERIALS
A. Membrane Curing Compound Type A: ASTM C309, Type 1, Class A.
1. Manufacturers:
B. Non-Membrane Forming Curing Compound Type B: Liquid, penetrating siliconate based type;
combination curing, hardening and dustproofing compound.
C. Absorptive Mats Type C: ASTM C171, burlap-polyethylene, minimum 9 oz/sq yd bonded to prevent separation during handling and placing.
D. Waterproof Paper Type D: ASTM C171, curing paper treated to prevent separation during handling and placing.
E. Water: Potable, not detrimental to concrete.
PART 3 EXECUTION
3.1 EXAMINATION
A. Section 01 30 00 - Administrative Requirements: Coordination and project conditions.
B. Verify requirements for concrete cover over reinforcement.
C. Verify anchors, seats, plates, reinforcement and other items to be cast into concrete are accurately placed, positioned securely, and will not interfere with placing concrete.
3.2 PREPARATION
A. Prepare previously placed concrete by cleaning with steel brush and applying bonding agent.
Remove laitance, coatings, and unsound materials.
B. In locations where new concrete is doweled to existing work, drill holes in existing concrete, insert steel dowels and pack solid with non-shrink grout.
C. Remove debris and ice from formwork, reinforcement, and concrete substrates.
D. Remove water from areas receiving concrete before concrete is placed.
3.3 FORMWORK
A. Earth Forms:
1. Earth forms are not permitted, unless required to ensure native soil bearing on exposed concrete face.
B. Formwork - General:
03 30 00 - 7 of 11
1. Construct forms to correct shape and dimensions, mortar-tight, braced, and of sufficient strength to maintain shape and position under imposed loads from construction operations.
2. Camber forms where necessary to produce level finished soffits unless otherwise shown on Drawings.
3. Carefully verify horizontal and vertical positions of forms. Correct misaligned or misplaced forms before placing concrete.
4. Complete wedging and bracing before placing concrete.
C. Install formed openings for items to be embedded in or passing through concrete work.
D. Locate and set in place items required to be cast directly into concrete.
E. Coordinate with Work of other sections in forming and placing openings, slots, recesses, sleeves, bolts, anchors, other inserts, and components of other Work.
F. Install accessories straight, level, and plumb. Ensure items are not disturbed during concrete placement.
G. Embedded Items:
1. Make provisions for pipes, sleeves, anchors, inserts, reglets, anchor slots, nailers, water stops, and other features.
2. Do not embed wood or uncoated aluminum in concrete.
3. Obtain installation and setting information for embedded items furnished under other
Specification sections.
4. Securely anchor embedded items in correct location and alignment prior to placing concrete.
5. Verify conduits and pipes, including those made of coated aluminum, meet requirements of
ACI 318 for size and location limitations.
H. Do not remove forms or bracing until concrete has gained sufficient strength to carry its own weight and imposed loads and removal has been approved by Engineer.
I. Loosen forms carefully. Do not wedge pry bars, hammers, or tools against finish concrete surfaces scheduled for exposure to view.
3.4 REINFORCEMENT PLACEMENT
A. Place, support and secure reinforcement against displacement. Do not deviate from required position beyond specified tolerance.
1. Do not weld crossing reinforcement bars for assembly.
B. Accommodate placement of formed openings.
C. Space reinforcement bars with minimum clear spacing of one bar diameter, but not less than 1 inch.
1. Where bars are indicated in multiple layers, place upper bars directly above lower bars.
D. Maintain concrete cover around reinforcement in accordance with ACI 318 as follows:
03 30 00 - 8 of 11
Reinforcement Location Minimum Concrete Cover
Footings and Concrete Formed Against Earth 3 inches
Concrete exposed to earth or weather
No. 6 bars and larger 2 inches
No. 5 bars and smaller 1-1/2 inches
E. Splice reinforcing in accordance with splicing device manufacturer’s instructions.
3.5 PLACING CONCRETE
A. Notify Engineer and testing laboratory minimum 48 hours prior to commencement of operations.
B. For concrete thrust blocks, use solid, undisturbed earth at the sides and bottom of the trench excavation for bearing concrete thrust blocking. Shape blocking to avoid obstruction of weep holes or access to joints and pipe fittings.
C. Ensure reinforcement, inserts, embedded parts, formed expansion and contraction joints are not disturbed during concrete placement.
D. Reinforcement bar supports and spacers shall be sized and shaped for strength and support of reinforcement during concrete placement. Must be manufactured products used as recommended by manufacturer. Stones, rebar pieces or other materials are not acceptable replacements.
E. Separate slabs on grade from vertical surfaces with ½ inch thick joint filler.
F. Place joint filler in floor slab pattern placement sequence. Set top to required elevations. Secure to resist movement by wet concrete.
G. Extend joint filler from bottom of slab to within ¼ inch of finished slab surface.
H. Install construction joint devices in coordination with floor slab pattern placement sequence. Set top to required elevations. Secure to resist movement by wet concrete.
I. Install joint device anchors. Maintain correct position to allow joint cover to be flush with floor finish.
J. Install joint covers in longest practical length, when adjacent construction activity is complete.
K. Deposit concrete at final position. Prevent segregation of mix.
L. Place concrete in continuous operation for each panel or section determined by predetermined joints.
M. Consolidate concrete.
N. Maintain records of concrete placement. Record date, location, quantity, air temperature, and test samples taken.
03 30 00 - 9 of 11
O. Place concrete continuously between predetermined expansion, control, and construction joints.
P. Do not interrupt successive placement; do not permit cold joints to occur.
Q. Screed floors and slabs on grade level, maintaining surface flatness of maximum ¼ inch in 10 ft.
3.6 CONCRETE FINISHING
A. Finish concrete floor surfaces to requirements of Section 03 35 00.
B. Steel trowel surfaces which are indicated to be exposed.
C. In areas with floor drains, maintain floor elevation at walls; pitch surfaces uniformly to drains at ¼ inch per foot nominal unless otherwise indicated on drawings.
3.7 CURING AND PROTECTION
A. Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury.
1. Protect concrete footings from freezing for minimum 5 days.
B. Maintain concrete with minimal moisture loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete.
C. Ponding: Maintain 100 percent coverage of water over floor slab areas continuously for 7 days.
D. Spraying: Spray water over floor slab areas and maintain wet for 7 days.
E. Absorptive Mat: Spread cotton fabric over floor slab areas. Spray with water until mats are saturated, and maintain in saturated condition for 7 days.
F. Absorptive Mat: Saturate burlap-polyethylene and place burlap-side down over floor slab areas, lapping ends and sides; maintain in place for 7 days.
G. Membrane Curing Compound: Apply curing compound in one coat.
H. Non-Membrane Forming Curing Compound: Apply curing compound in one coat. Scrub compound into surface. Maintain surface wet with curing compound, without ponding for time recommended by manufacturer.
I. For curing vertical concrete surfaces:
1. Spraying: Spray water over surfaces and maintain wet for 7 days.
2. Membrane Curing Compound: Apply compound in two coats with second coat applied at right angles to first.
3. Non-Membrane Forming Curing Compound: Apply curing compound in one coat. Scrub compound into surface. Maintain surface wet with curing compound, without ponding for time recommended by manufacturer.
03 30 00 - 10 of 11
3.8 FIELD QUALITY CONTROL
A. Sections 01 40 00 - Quality Requirements and 01 70 00 - Execution and Closeout Requirements:
Field inspecting, testing, adjusting, and balancing.
B. Submit proposed mix design of each class of concrete to testing firm for review prior to commencement of Work.
C. Concrete Inspections:
1. Continuous Placement Inspection: Inspect for proper installation procedures.
2. Periodic Curing Inspection: Inspect for specified curing temperature and procedures.
D. Strength Test Samples:
1. Sampling Procedures: ASTM C172.
2. Cylinder Molding and Curing Procedures: ASTM C31, cylinder specimens, standard cured.
3. Sample concrete and make one set of three cylinders for every 150 cu yds or less of each class of concrete placed each day and for every 5,000 sf of surface area for slabs and walls.
4. When volume of concrete for any class of concrete would provide less than 5 sets of cylinders, take samples from five randomly selected batches, or from every batch…
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