16-Attachment B- Sidewalk Spec R3.pdf
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- Solicitation number
- IFB-26-00297
- Issued by
- Hillsborough County, Florida
About this file
This is a technical specification document for concrete work associated with Hillsborough County Engineering and Operations Department's Sidewalk Replacement and Repair - South (WORCS 2) project in Florida, an estimated $10,000,000 sidewalk replacement and repair initiative. The specification sections detail requirements for concrete forms (Section 03100), concrete accessories (Section 03150), and concrete reinforcement (Section 03200). Concrete formwork must comply with American Concrete Institute (ACI) standards, utilizing Grade A forms with plywood or metal construction lined with tempered hardboard for all exposed surfaces, with chamfered external corners of 3/4 inch by 3/4 inch by 45 degrees. All formwork must meet ACI 301 and ACI 318 standards, with bulges or depressions not exceeding 1/8 inch in 4 feet. Concrete accessories specifications require construction joints spaced no more than 75 feet apart for walls, with waterstops embedded approximately half on each side of joints using either rubber or PVC materials, with PVC preferred. Expansion joints for drives, pavements, and slabs on grade must utilize preformed non-extruding asphalt or bituminous fiber joint fillers set 1/8 inch below finished surface. Synthetic fibrous reinforcement is specified at 1.5 pounds per cubic yard using 100% virgin fully-oriented copolymer/polypropylene fibers, 1.5 inches in length, compliant with ASTM C-1116 and ASTM D-7508 standards, with the approved product being FORTA-FERRO macrosynthetic fiber.
The contractor must submit samples of patterned concrete form liners and form ties prior to work commencement, with all forms subject to inspection by the Engineer/Architect before concrete placement. Patterned concrete finishes must duplicate the surface appearance of cut limestone building panels with rustication beveled approximately 1 to 8 maximum for form release. The project incorporates an SBE (Small Business Enterprise) participation goal of 9% for subcontractors. Form removal must comply with ACI 318 requirements without damaging concrete, with shoring remaining in place until concrete safely supports its own weight plus any live loads. The fiber representative must be present during the first concrete placement to confirm proper dosage, with the contractor providing five days' notice and required submission of shop drawings for all fiber products used.
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Text version
01/22/25 TV/KT CONCRETE FORMS
03100-1
SPECLIB051404
SECTION 03100
CONCRETE FORMS
PART 1 GENERAL
1.1 Section Includes
General formwork, forms, form liners, and coatings, form ties.
1.2 Related Sections
Section 03150 - Concrete Accessories
1.3 References
A. American Concrete Institute (ACI) latest edition:
1. ACI 301 - Structural Concrete for Buildings
2. ACI 318 - Building Code Requirements for Reinforced Concrete
3. ACI 347 - Guide to Formwork for Concrete
4. ACI SP-4 - Formwork for Concrete
1.4 System Description
Provide formwork to produce members of the size, shape, and exterior finish required, for the structural adequacy of the forms to carry construction loads without excessive deflection, and for the safe use of forms in connection with completion of the concrete work. The Contractor shall be responsible for any injury or damage arising from inadequate forms or from premature removal of formwork.
1.5 Submittals
Submit samples of patterned concrete form liner panels and form ties.
PART 2 PRODUCTS
2.1 Formwork
A. Form ties shall be a watersealing snap-in type. For patterned concrete, use stainless steel snap ties.
B. Plywood forms and liners shall be minimum grade B-B High Density Overlay
Concrete Form Panels, Class I.
C. Formwork lumber shall be straight and clean. All nails shall be withdrawn and surfaces in contact with concrete shall be thoroughly cleaned before reuse
03100-2
D. Metal forms shall be in accordance with ACI SP-4.
2.2 Patterned Concrete Form Liners
A. The special liners shall be configured in such a manner as to produce patterned finish concrete that will duplicate the surface appearance of the cut limestone building panels. The location, extent, and configuration of the surface treatment shall be as indicated on the Drawings. In addition to form release agents, rustication may be slightly beveled, approximately 1 to 8 maximum, to facilitate form release.
B. Produce the patterned concrete with a smooth finish by using either plywood and/or tempered hardboard, complying with requirements for Grade A Forms, in conjunction with finished lumber, or approved fiberglass liners; or an approved equal liner. Liner joint marks shall not be apparent.
PART 3 EXECUTION
3.1 General
A. Coordinate with other trades and properly place and locate in position all necessary dowels, bolts, anchors, anchor slots, inserts, sleeves, openings, hangers, metal ties and other fastening devices required for attachment and support of adjacent work. Securely anchor all embedded items.
B. Formwork shall comply with ACI 347 and to shape, lines and dimensions of the members as indicated on the Drawings. Joints in forms shall be horizontal or vertical. Forms shall be properly braced or tied to maintain position and shape under all dead and live loads and to prevent leakage. Forms shall be assembled so their removal will not damage the concrete. Tolerances for formed surfaces shall be in compliance with ACI 301.
C. Lumber formwork may be used for surfaces which will not be exposed to view.
Use plywood or metal forms for exposed surfaces.
D. Provide temporary openings at the base of forms greater than 4 feet high, if necessary, to facilitate cleaning and inspection immediately before depositing concrete.
E. All external corners of concrete exposed to view shall be chamfered by using 3/4 inch by 3/4 inch by 45 degree wood stripping, except as otherwise indicated on the Drawings.
3.2 Grade A Forms
A. Unless otherwise indicated, Grade A forms shall be used for all exposed concrete.
03100-3
B. Grade A forms shall consist of steel forms lined with 3/16 inch thick tempered hardboard or 1/4 inch thick plywood, or by using plywood forms.
C. Full sized sheets shall be used wherever possible. The edges of all sheets shall be straightened to insure tight, close fitting joints. Bulges or depressions more than 1/8 inch in 4 feet will not be permitted. Open joints which would permit leakage shall be sufficient cause for rejection of forms. Other tolerances shall be as allowed by ACI 347.
3.3 Grade B Forms
A. Use lumber, plywood or metal forms. All joints shall be solidly backed, aligned and made leakproof.
B. Unless otherwise indicated, Grade B Forms are intended for use where concrete will not be exposed to view, such as below grade, below normal liquid levels in water-retaining structures, or inside manholes, boxes, vaults, etc.
3.4 Surface Treatment of Formwork
The inside surface of lumber forms shall be soaked with clean water prior to placing concrete. All other forms shall be treated with an approved form oil or lacquer. If oil is used, all excess oil shall be wiped off.
3.5 Inspection of Formwork
Concrete shall not be placed until the forms have been inspected by the E/A to assure surfaces in conformance with the Drawings and Specifications. The inspection of formwork by the E/A does not relate to the structural adequacy or the safety of the formwork.
3.6 Removal of Forms
Forms shall be removed in accordance with requirements of ACI 318, without damaging the concrete. Leave shoring in place until concrete will safely support its own weight plus any live loads that may be placed upon it.
END OF SECTION
01/22/25 TV/KT
CONCRETE ACCESSORIES
03150-1
SECTION 03150
Construction joints, anchors and inserts, waterstops
1.2 Related Sections
A. Section 03100 - Concrete Forms
B. Section 07900 - Joint Sealants
1.3 References
A. American Society for Testing and Materials (ASTM) latest edition:
1. ASTM D1751 - Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types)
2. ASTM D1752 - Preformed Sponge Rubber and Cork Expansion Joint Fillers for Concrete Paving and Structural Construction
1.4 Submittals
Provide samples and certif ications of all proposed materials.
2.1 Joint Fillers
A. Joint fillers shall be products of the following manufacturers, or equal
1. W. R. Meadows, Inc., Elgin, Illinois
2. W. R. Grace and Co., Cambridge, Massachusetts
B. Preformed sponge rubber joint filler shall conform to ASTM D1752, Type I.
C. Preformed cork joint filler shall conform to ASTM D1752, Type II.
D. Preformed bituminous fiber joint filler shall be non_extruding type conforming to
ASTM D1751.
E. Control joint strips shall have a minimum depth of 25 percent of slab thickness and a minimum thickness of 1/8 inch.
03150-2
2.2 Joint Sealants
Sealants for joints shall be in accordance with Section 07900.
2.3 Waterstop
A. Waterstop shall be either rubber (SBR or Neoprene) or PVC and shall be dense, homogeneous and uniform. PVC is preferred. Holes and imperfections shall be cause for rejection
B. Waterstops for construction joints shall be 4 inch by 3/16 inch minimum split waterstop or 6 inch by 3/8 inch minimum with hollow center bulb. Waterstops for expansion joints shall be 9 inch by 3/8 inch with 3/4 inch hollow center bulb.
Multiple rib type of waterstop is preferred, if available. Where size and type of waterstop are not indicated, 6 inch by 3/8 inch minimum with hollow center bulb shall be used.
C. Provide prefabricated tees, crosses, and other configurations as required for all intersections of waterstop.
3.1 Preparation
Remove existing concrete and provide openings for installation of new work as indicated on Drawings. Repair all damage to existing work caused by concrete removal.
3.2 General
A. Arrange construction joint bulkheads to allow concrete to be placed between construction joints in one continuous operation.
B. Provide construction joints with shear transfer keyways and waterstops as indicated. Unless otherwise indicated on the Drawings, spacing of construction joints for walls shall not exceed 75 feet.
C. Erect bulkheads where shown on the Drawings or where approved by the E/A.
Bulkheads shall be at right angles to the main reinforcement and shall produce a tongue and grooved joint of the configuration indicated on the Drawings. Install waterstop as indicated.
D. Obtain the E/A's approval if it becomes necessary to eliminate or relocate construction joints shown on the Drawings.
E. Tops of edge forms, bulkheads and screeds shall be set to the finished elevations and to provide uniform pitch to drains as indicated on Drawings.
3.3 Horizontal Joints
03150-3
Provide methods of achieving a leakproof joint. No horizontal construction joints will be permitted in slabs, beams, or girders
3.4 Vertical Joints
Joints in reinforced slabs, beams, and girders shall be perpendicular to the axis or plane of the members joined.
3.5 Expansion Joints
A. Provide expansion joints and waterstops where indicated. Joint fillers shall be placed on each side of waterstops.
B. Unless otherwise indicated, provide preformed sponge rubber or preformed cork filler. Allow for installation of two component traffic grade polyurethane sealant in compliance with Section 07900.
C. For drives, pavements, parking areas, walks and slabs on grade, provide preformed non-extruding asphalt strip or bituminous fiber joint filler set 1/8_inch below finished surface unless otherwise indicated. Tool concrete edges on each side of joint. No sealant is required.
D. Unless otherwise indicated, provide preformed sponge rubber or cork filler with allowance for installation of two-component polysulfide sealant in compliance with Section 07900.
E. Unless otherwise indicated, provide preformed sponge rubber or cork filler with allowance for installation of two component polysulfide sealant in compliance with Section 07900.
3.6 Waterstops
A. Provide continuous waterstops where so indicated on the Drawings
B. Embed approximately half of the waterstop on each side of the joint. Field splice and joint PVC waterstop by heat sealing butt joints. Rubber waterstop shall be spliced or jointed with solid web rubber unions and the manufacturer's approved cold applied cement.
C. All splices and joints shall be in accordance with the manufacturer's recommendations to produce a water-tight joint. Lap splices will not be permitted. Support and protect the waterstop during construction. Repair or replace all damaged waterstop.
END OF SECTION
CONCRETE REINFORCEMENT
03200-4
SECTION 03200
Reinforcement for concrete, not including reinforcement for masonry.
1.2 References
A. American Concrete Institute (ACI) latest edition:
1. ACI 315 - Standard Practice for Detailing Reinforced Concrete Structures
2. ACI 318 - Building Code Requirements for Reinforced Concrete
B. American Society for Testing and Materials (ASTM) latest edition:
1. ASTM A36 - Carbon Structural Steel
2. ASTM A185 - Steel Welded Wire Reinforcement, Plain, for Concrete
3. ASTM A615- Deformed and Plain Billet-Steel Bars for
Concrete Reinforcement
C. Concrete Reinforcing Steel Institute (CRSI) latest edition:
1. Manual of Standard Practice for Reinforced Concrete Construction
1.3 Submittals
A. Certif ications for reinforcement
2.1 General – Not Used
3.1 Preparation
A. On porous subgrade or beddings, provide vapor barrier.
B. Coordinate with other trades and properly place and locate in position all necessary reinforcement, dowels, bolts, anchors, anchor slots, inserts, hangers, metal ties, and other fastening devices required for attachment and support to adjacent work. Securely anchor all f ixtures and embedded items.
03200-5
3.2 General – Not Used
3.3 Splices, Laps, and Dowels – Not Used
3.4 Fabric Reinforcement for Slabs – Not Used
3.5 Reinforcement for Formed Concrete – Not Used
3.6 SYNTHETIC FIBROUS REINFORCEMENT for Formed Concrete
A. Configuration – Fiber should be a macrosynthetic synergistic combination of a twisted-bundle non-fibrillating monofilament and a fibrillating network fiber system.
B. Chemistry – Fiber shall be made of 100% virgin materials in the form of fully- oriented copolymer/polypropylene, gray in color.
C. Contents – Fiber shall be used at a dosage rate of 1.5 pounds per cubic yard
D. Correct Length – Fiber Length shall be 1.5 - Inches
E. Compliance: Fibers shall comply with A.S.T.M. C-1116 “Standard Specification for Fiber Reinforced Concrete and Shotcrete” and A.S.T.M. D-7508 “Standard Specification for Polyeolefin Chopped Strands for Use in Concrete”. The approved product is FORTA-FERRO® macrosynthetic fiber as manufactured by FORTA Corporation, Grove City, PA, U.S.A. Phone: 1-800-245-0306.
F. The fiber product name and addition rate per cubic yard is required to be on each concrete delivery ticket.
G. The fiber representative is required to be present for the first placement of concrete to confirm the amount of fiber used per cubic yard and that the manufacturer’s recommendations are followed. The contractor is required to provide 5 days notice.
H. The Contractor shall submit shop drawing for fiber to be used
END OF SECTIO
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