ACCESSORY MATERIALS FOR CONCRETE PAVEMENT AND CONCRETE STRUCTURES METAL ACCESSORY MATERIALS FOR CONCRETE PAVEMENT AND CONCRETE STRUCTURES
931-1 Reinforcement Steel (for Pavement and Structures).
931-1.1 Steel Bars:
931-1.1 1 Carbon Steel Bars: Carbon steel bars for concrete reinforcement shall
conform to the requirements of ASTM A615 Grades 60 or 80.
931-1.1 2 Stainless Steel Bars: Stainless steel bars for concrete reinforcement
shall conform to the requirements of ASTM A955, Grades 60 or 75; or ASTM A276, UNS S31653 or S31803.
931-1.1 3 Low -Carbon Chromium Steel Bars: Low-carbon chromium steel bars
for concrete reinforcement shall conform to the requirements of ASTM A1035 Grade 100.
931-1.1 4 Special Requiremen ts: The following special requirements shall
apply:
1.Unless otherwise specified or shown in the Plans all reinforcing bars No. 3 and larger shall be deformed bars.
2.Twisted bars shall not be used.
3.Wherever in the Specifications the word “pu rchaser” appears it shall be taken to mean the Department.
931-1.1 5 Acceptance of Steel Bars: Acceptance of reinforcing steel shall be
based on the manufacturer being on the National Transportation Product Evaluation Program (NTPEP) list of compliant pr oducers, samples taken by the Department , and manufacturer’s certified mill analysis . The test results shall meet the specification limits of the ASTM or AASHTO designation for the size, grade and any additional requirements. The manufacturer’s certified m ill analysis for each heat, size, and grade per shipment of reinforcing steel shall be provided to the Engineer prior to use. The Engineer will select samples representing each LOT of reinforcing steel. A sample is defined as the reinforcing steel and t he certified mill analysis corresponding to the sample. A LOT is defined as the weight of all bars, regardless of size, grade or pay item in consecutive shipments of 100 tons or less. Samples shall be cut from bundled steel that is shipped to the jobsite. Projects with less than two tons of bars do not require Department sampling.
931-1.2 Wire Reinforcement:
931-1.2 1 Carbon Steel Wire Reinforcement: Plain and deformed carbon steel
wire reinforcement shall meet the requirements of ASTM A1064. Deformed carbon steel wire shall be Grade 75.
931-1.2 2 Stainless Steel Wire Reinforcement: Plain and deformed stainless
steel wire reinforcement shall meet the requirements of ASTM A276, UNS S30400.
931-1.2 3 Acceptance of Wire Reinforcement: Acceptance of wire
reinforcement shall be based on the manufacturer’s certified mill analysis certify ing that the test results meet the specification limits of the ASTM designation for the sizes and any additional FY 2023-24 Return to Table of Contents requirements. Prior to use, submit to the Engineer the manufacturer’s certified mill analysis for each heat and size per shipment.
931-1.3 Carbon Steel Welded Wire Reinforcement :
931-1.3 1 Carbon Steel Welded Wire Reinforcement: Welded wire reinforcing
steel shall meet the requirements of ASTM A1064.
931-1.3 2 Acceptance of Carbon Steel Welded Wire Reinforcement:
Acceptance of welded wire re inforcement shall be based on the manufacturer’s certified mill analysis certifying that the test results meet the specification limits of the ASTM designation for the sizes and any additional requirements. Prior to use, submit to the Engineer the manufact urer’s certified mill analysis for each heat and size per shipment.
931-1.4 Couplers for Steel Bars:
931-1.4 1 Approved Product List (APL): The couplers used shall be a product
included on the Department’s APL. Manufacturers seeking approval of their product shall demonstrate the performance of their product in accordance with the requirements in 931 -1.4.2 through 931 -1.4.4 as applicable and 931 -1.4.5.
931-1.4 2 Couplers for Carbon Steel Bars: Couplers for use with carbon steel
bars shall be fabrica ted from an alloy that is electrochemically compatible with bars that meet the requirements of 931 -1.1.1.
931-1.4 3 Couplers for Stainless Steel Bars: Couplers for use with stainless steel
bars shall be fabricated from an alloy that is electrochemically compatible with bars that meet the requirements of 931 -1.1.2.
931-1.4 4 Couplers for Low -Carbon Chromium Steel Bars: Couplers for use
with low-carbon chromium steel bars shall be fabricated from an alloy that is electrochemically compatible with bars tha t meet the requirements of 931 -1.1.3.
931-1.4 5 Special Requirements: Couplers shall develop at least 125% of the
specified yield strength of the bar being spliced.
931-2 Metal Materials for Joints in Concrete Pavement.
931-2.1 Sheet Metal Bottom Strips : For concrete pavement using the special select soil
base option, the sheet metal strip for protecting the bottom and side edges of transverse expansion joints shall be composed of galvanized sheet metal of 0.0157 inches minimum thickness and shall confor m to the requirements of ASTM A653. The sheets shall be furnished in accordance with the dimensions shown in the Plans. They may be in one continuous piece, or spliced. When splicing is used the metal shall be lapped not less than 3 inches and securely fas tened, by welding or otherwise, in such manner as to leave the spelter undamaged and produce a smooth sliding surface in contact with the pavement slab. The splices shall be spaced not less than 10 feet apart and not less than 5 feet from either end. The complete sheet shall not vary from a straight line by more than 1 inch from end to end. The Contractor shall submit to the Engineer a certified mill analysis from the manufacturer of the sheet metal bottom strips including test results for thickness, dime nsion, grade, length, size, and spacing. Each certified mill analysis shall cover only one type of metal material for joints.
931-2.2 Bars and Chairs for Longitudinal Joints: Transverse reinforcing steel across
the joint shall be deformed steel bars confo rming to the requirements of 931 -1.1 except that the bars may be any grade shown in ASTM A615. FY 2023-24 Return to Table of Contents These bars, and the chairs to hold them in place, shall be of the type and spacing as indicated in the Plans.
931-2.3 Dowel Bars: Dowel bars must meet the req uirements of Table 931-1. They shall
be of the length, size and spacing as shown in the Plans. The Contractor shall submit to the Engineer a certified test report from the manufacturer of the dowel bars confirming that the requirements of this Section a re met. The certified test report shall conform to the requirements of Section 6 and include metallurgical mill analysis, grade, length and size. Each certification shall cover only one LOT for dowel bars.
931-2.4 Chairs and Metal Expansion Caps: The chairs and metal expansion caps shall
be of an approved type as shown in the Plans. Dowel bars for expansion joints shall have a metal cap on one end so placed to provide ample space for movement of the slab. Continuous sleeves covering one half of the length of the bar will not be permitted. Other fasteners may be approved. Dowel bars shall be coated with an approved material to break the bond.
931-3 Metal Dowel Bar Assemblies for Joints in Concrete Pavement.
931-3.1 Approved Product List (APL): The dowel b ars and basket assembly must meet
the requirem ents of Table 931-1 and shall be a product included on the Department’s APL. Manufacturers seeking evaluation of their product shall submit an application in accordance with Section 6 and shall submit product photo and drawings, technical data sheets, and certifications that demonstrate the performance of their products in accordance with the requirements in 931 -3.1 thru 931 -3.5. Table 931 -1 Material Requirement for Dowel Bar and Basket Assemblies Component Base Metal Coating Dowel Bar ASTM A615 ASTM A775 or SSPC Paint 2 0 Wire Basket Assembly ASTM A1064 ASTM A775 or SSPC Paint 20 or Primer with ≥ 40% Solids (by weight) Produce dowel bars coated in the shop. Wire basket assemblies may be coated in the shop or the field. For welded wire basket assemblies fabricated after coating, apply touch -up coating in the shop or field over all welded connections. All field applied coatings must have a volatile organic compound ( VOC) content ≤ 420g/L.
931-3.2 Rigidity: The dowel bars shall be supported by an approved welded assembly
possessing sufficient rigidity to hold the dowel bars in position to such accuracy that error or deviation from its required position in any bar in the entire installation a fter the pavement has been finished shall be no greater than 1/2 inch. The assembly shall have continuous parallel spacer bars and two continuous parallel bearing members of no less than 1/4 inch diameter wire. One spacer bar shall be located at or near each end of the dowel. Alternate ends of dowels shall be welded to a spacer bar in such a manner as to maintain the dowels parallel to each other and permit sliding movement in the joint. FY 2023-24 Return to Table of Contents The free ends of each dowel shall be retained securely in place by means of wire loops or metal tubes welded to the other spacer bar. An expansion cap shall be installed on one end of each bar if the dowels are being used in an expansion joint. Suitable struts or ties shall be provided to hold the assembly in correct position during installation. The assembly shall have an upright support welded to the spacer bar and continuous bearing member at the end of each dowel and a continuous bearing member. If the upright support consists of a single vertical wire, the support shall be no less than 5/16 inch diameter wire. Otherwise, the support shall be no less than 1/4 inches in diameter.
931-3.3 Sand Plates: Sand plates, if required, shall be made from no less than 3/8 inch
sheet steel. Each plate shall have no less than 0.1 square feet of bearing area. The plates shall be furnished in sufficient number to provide uniform support for the complete assembly. They may be furnished separate from the assembly units or attached thereto by welding, suitable clips, or other approved means.
931-3.4 Welds: The welds of the assembly shall be made securely. A broken weld will
be cause for rejection of the length of section of the assembly where it occurs.
931-3.5 Assembly Placement: When the dowel bar assembly is in place, it shall act as a
rigid unit with each component part securely held in position relative to the other member of the assembly. The entire assembly shall be held securely in place during placing, consolidating, and finishing the concrete by means of metal pins. Pins used on granular subbase or cold mixed bituminous stabilized subbase shall penetrate at least 12 inches below the dowel bar assembly. The pins shall be of no less than 1/4 inch diameter wire and shall be provided with a hook or arm welded to the pin in such a manner that it shall secure the assembly in place. Nail securing systems may be used as an anchoring device on hot bituminous stabilized subbase. The nail shall be no less than 1/8 inch in diameter, no less than 2 inches in length and the nail head or attached washer shall be not less than 1/2 inch outside diameter. The nail shall be driven through both ends of a metal strap after it has been placed around one of the lower transverse bars on the dowel bar assembly. At least eight pins or nails shall be used for each 12 foot section (a lane width) of assembly. Sand plates, if required, shall be drilled to receive the pins. The Contractor shall provide the equipment and personnel necessary to verify dowel bar location after the concrete is placed and has received the initial screeding.
931-4 Wire for Site Cage Machines .
The wires for site cage machines shall meet the requirements of ASTM A1064 or ASTM A706. FY 2023-24 Return to Table of Contents SECTION 932 NONMETALLIC ACCESSORY MATERIALS FOR CONCRETE PAVEMENT AND CONCRETE STRUCTURES
932-1 Joint Materials.
932-1.1 Preformed Joint Filler for Pavement and Structures: Preformed joint filler
shall meet the requirements of AASHTO M 153, ASTM D8139, AASHTO M 213, or cellulose fiber types meeting all the requirements of AASHTO M 213 (except for the asphalt content) is acceptable provided they contain minimums of 0.2% zinc borate as a preservative and 1.5% waterproofing wax. For AASHTO M 153, unless a particular type is specified, either Type I, Type II or Type III may be used. Preformed joint fillers shall have a thickness equal to the width of the joint required, and sha ll be furnished in lengths equal to the widths of the slabs in which they are to be installed, except strips which are of a length not less than the distance between longitudinal joints, or between longitudinal joint and edge, may be used if laced or clipp ed together in a manner approved by the Engineer. The depth and shape of the joint filler shall conform to the dimensions shown in the Plans. For doweled joints, proper provision shall be made for the installation of the dowels.
932-1.1 1 Certification: The Contractor shall submit to the Engineer a
certification confirming that the preformed joint filler meets the requirements of this Section. The certification shall conform to the requirements of Section 6.
932-1.2 Joint Sealer for Pavement and Structur es:
932-1.2 1 General: This Specification covers joint sealer intended for use in
sealing joints in asphaltic concrete pavement and portland cement concrete pavement. These materials may also be used to seal joints in portland cement concrete bridges and other structures.
932-1.2 2 Material: The joint sealant shall be composed of a mixture of
materials, typically but not limited to bituminous based, that will melt when heated for application and then solidify to form a resilient and adhesive compound ca pable of sealing joints in portland cement concrete and asphaltic concrete against the infiltration of moisture and foreign materials throughout normal pavement conditions and at ambient temperatures. The manufacturer shall have the option of formulating t he material according to their Specifications. However, the requirements delineated in this Specification shall apply regardless of the type of formulation used. The material shall cure sufficiently to not flow from the joint or be picked up by vehicle tir es after 3 hours at 77°F. The material shall be capable of a uniform application consistency suitable for filling joints without the inclusion of large air holes or discontinuities and without damage to the material. Materials for pavement joints shal l be tested according to ASTM D5329.
932-1.2 2.1 Physical Requirements of Joint Sealants for Portland
Cement Concrete Only: FY 2023-24 Return to Table of Contents
Source: Florida Standard Specifications for Road and Bridge Construction, 2024 Edition. Pages 1037–1040 of 1,299.