1626 - ALUMINUM ALLOYS
1600-42 Welding is to be conducted accord ing to the recommendations of the ASTM standard that governs the
product or basis metal and in accord ance with the specifications and reco mmended procedures and practices of ANSI/AWS A5.10 and D1.2. 1626.3 TEST METHODS Conduct all tests required by the applic able ASTM or ANSI/AWS specification of subsection 1626.2b . 1626.4 PREQUALIFICATION Not applicable. 1626.5 BASIS OF ACCEPTANCE Receipt and approval of a Type B certification as specified in DIVISION 2600 . Inspection by field personnel of all products and components for compliance with dimensional and supplemental corrosion protection coating requirements when corrosion protection is specified, quality of workmanship and delivery condition. 1627 - ALUMINUM SIGNING MATERIALS
1600-43 Section 1627
ALUMINUM SIGN ING MATERIALS 1627.1 DESCRIPTION This specification covers aluminum alloy materi als and hardware items for fabricating signs. 1627.2 REQUIREMENTS
a.General. Provide materials that comply with the di mensions shown in the Contract Documents. Tolerances are as shown in the Contract Documents or as specified by ASTM or othe r referenced specifications. Provide aluminum alloys that comply with TABLE 1627-1 . TABLE 1627-1: ALUMINUM ALLOYS FOR SIGNS Material Test Method Alloy Fasteners Bolts and Screws ASTM B 211 Alloys 2024-T4* or 6061-T6 Nuts, ¼ inch tap and under ASTM B 211 Alloy 2024-T4* Nuts, 5/16 inch tap and over ASTM B 211 Alloys 6061-T6 or 6262-T9 Washers, Flat ASTM B 209 Alloy 2024 with 1230, T4 temper (Alclad 2024-T4) Washers, Spring Lock ASTM B 211 Alloy 7075-T6 Locknuts ASTM B 211 Alloy 2017-T4* Rivets, blind (Front entry, expanding) ASTM B 316 Alloys 2017-F* or 2117-F* Post Clips ASTM B 108 Alloys (cast) 356.0-T6, A356.0-T61 or 356.0-F Structural Panels ASTM B 209 Alloy 3003-H18 or 5052-H38 Structural Panel Stiffeners ASTM B 221 Alloy 6063-T6 Sign Blanks ASTM B 209 Alloys 6061-T6, 6063-T6, 5154-H38 or 5052-H38 Detachable Legend for Signing ASTM B 209 Alloy 3003-H14 * Anodize to produce an oxide coating not less than 0. 0002 inch thick and seal to decrease permeability. 1627.3 TEST METHODS As specified in the various ASTM standards referenced in TABLE 1627-1 1627.4 PREQUALIFICATION None Required. 1627.5 BASIS OF ACCEPTANCE Receipt and approval of a Type D certification as specified in DIVISION 2600 . Visual inspection at destination for condition and compliance with dimensional and other requirements. 1628 - HEADED REINFORCING ANCHORS
1600-44 Section 1628
HEADED REINFORCING ANCHORS 1628.1 DESCRIPTION This specification covers rebar with headed anchors a ttached to one or both ends of the bars for concrete reinforcement. Equivalent types of headed reinforcing anc hors may also be referred to as headed reinforcement, headed rebar, rebar end anchors, or rebar terminators. 1628.2 REQUIREMENTS
a.Mount anchors on bars that meet all requirements of SECTION 1601 including prequalified plant status.
b.Mount anchors on bars in a fabricator's shop prior to delivery to a project. Forging, swaging, and threading are acceptable methods of attaching the anchors on bars.
c.Unless otherwise shown, use only headed reinforcing anchors with heads having a net area of at least 9 times the area of the reinforcing bar.
d.Use anchors complying with the requirements of ASTM A 970, Class A with the following exception:
1.Rejection based on testing done at the KDOT in accorda nce with this specification may be reported at any time after the samples are delivered. Samples tested for prequalification which are rejected are not eligible for a rehearing. 1628.3 TEST METHODS Test according to the requirements of subsection 1628.2d . 1628.4 PREQUALIFICATION
a.Prepare 3 test specimens each bar size to be preq ualified and forward them to the Engineer of Tests along with the following information: Name, address and telephone number of the manufacturer. Include the name and e-mail address of the preferred contact person. Brand name of the anchor. Type and description of the anchor. Method of attachment of the reinforcing anchor to the rebar (forged, swaged, or threaded). Information regarding recommended usage and instructions. Material Safety Data Sheets (if applicable).
b.The samples provided will be tested to destruction and test reports prepared. During testing, the Engineer of Tests will determine if operator prequalificati on is required for fabricator shop attachment, and enter that information on the test reports. The test reports and the information supplied will be reviewed by the Bureau Chief of Construction and Materials. The manufacturer will be advised as to whether or not the product is prequalified.
c.The Bureau of Construction and Materials will mainta in a list of prequalified anchors. Products on the list will be classified by the method of attachment to the bar as listed in subsection 1628.2b and the approved bar sizes. Products will remain prequalified as long as the manuf acturing processes remain unchanged, and field experience indicates that the product functions appropriately. Changes in manufacturing processes require new prequalification testing. Failure of the product to function appropriately in the field will be cause for removal from prequalified status. Products removed from prequalified status will be considered for requalification if the manufacturer can provide evidence that the cause of failu re has been positively identified, and necessary changes 1628 - HEADED REINFORCING ANCHORS
1600-45 and quality control measures have been implemented to elim inate that cause. Complete prequalification testing will
be required for products that have been removed from prequalified status. 1628.5 BASIS OF ACCEPTANCE Prequalification as specified in subsection 1628.4 . Receipt and approval of a Type C certification as specified in DIVISION 2600 . 1701 - BEARINGS AND PADS FOR STRUCTURES
1700-1 Section 1701
BEARINGS AND PADS FOR STRUCTURES 1701.1 DESCRIPTION This specification covers the following types of pads and bearings for use on bridge seats: Plain Elastomeric bearing pads are non-reinforced pads consisting of elastomer only. Steel reinforced elastomeric bearings consist of laye rs of elastomer restrained at their interfaces by bonded, non-elastic laminates. Provide bearings w ith the dimensions, material properties, elastomer grade and type of laminates shown in the Contract Documents. Polytetrefluoroethylene (PTFE)/elastomeric bearings co nsist of a stainless steel sliding plate and a steel reinforced elastomeric bearing. Bond a stainless steel or structural st eel back-up plate to the top of the steel reinforced elastomeric bearing. Bond the other side of the back-up plate with a layer of teflon. Steel bearings consist of rock er, roller and sliding bearings. Pot and disc bearings consist of a circular, non-reinforced neoprene, elastomer, or rubber pad, of relatively thin section. For a pot bearing, this pad is confined and sealed in a stell pot or hydraulic cylinder. For a disc bearing, this pad is not confined. Spherical bearings consist of bearing with spherical elements for unidirectional deflection rotation. 1701.2 REQUIREMENTS
a.General. Use only one type of pad throughout any one structure, unless otherwise noted in the Contract Documents. Provide the type(s) of bearings shown in the Contract Documents. Provide pads or bearings that comply with the Bear ings section requirements of AASHTO’s LRFD Bridge Design Specifications and LRFD Bridge Construction Specifications.
b.Plain Elastomeric Pads. Provide a virgin neoprene (Polychloroprene) pad. A Shore A Durometer hardness of 60 ± 5 and an AASHTO low temperature grade 3 elastomer is required, unless shown otherwise in the Contract Documents. Leveling pads used in Continuous Prestressed Beam Bridges are exempt from the low temperature grad e requirements.
c.Steel Reinforced Elastomeric Bearings . Except as modified by th e material, testing and acceptance requirements of this specification, pr ovide steel reinforced elastomeric bear ings that satisfy the requirements of AASHTO M 251. Provide a virgin neoprene (polychloroprene) elastomer. A Shore A Durometer hardness of 60 ± 5 and an AASHTO low temperature Grade 3 elastomer is required, unless shown otherwise in the Contract Documents. Provide laminates for the bearings that comply with ASTM A 36, AASHTO M 270 (ASTM A 709) Grade 36, ASTM A 1011 SS Grade 36 or A 1008 SS Grade 40, unless otherwise specified in the Contract Documents. Refer to the Contract Documents for the design method used:
1.For steel reinforced elastomeric bearings desi gned using Design Method A, provide bearings that conform to and are tested according to the requirements of AASHTO M 251, sections 8.6 and 8.8.2, and Appendices X1 and X2. The testing requirements of section 8.8.1 w ill apply if a maximum value for compressive strain is shown in the Contract Documents. Follow the test proced ure described in section 8.8.2, except load the sampled bearing to 1500 psi. (2) For steel reinforced elastomeric bearings designed using Design Method B, provide bearings that conform to and are tested in accordance with AASHTO M 25 1, sections 8.6 and 8.8, including the shear modulus test of section 8.8.4. Report the test method used to determine shear modulus. The testing requirements of section 8.8.1 will apply if a maximum value for compressive strain is shown in the Contract Documents. Report the percent creep at 25 years (section 8. 8.3) if an allowable value is shown in the Contract Documents. Follow the test procedure described in section 8.8.2, except load the sampled bearing to 2400 psi. For sampling and testing of finished bearings, a lot is defined as being of the same size, thickness, design, and type - manufactured in a reasonably continuous manner for a single bridge. 1701 - BEARINGS AND PADS FOR STRUCTURES
1700-2 d. PTFE/Elastomeric Sliding Bearings. Provide an elastomeric portion satisfying subsection 1701.2(c) .
Provide a sliding surface for the PTFE that is chromi um-nickel stainless steel sheet or plate that complies with ASTM A 240, UNS S316 00 or UNS S30400. Polish the surface to an 8 micro-inch RMS (#8 mirror) finish. Provide special bearing quality polytetrafluoroethyle ne (PTFE) unfilled sheets having a static loading coefficient of friction of not more th an 0.03 at a bearing pressure of 3.0 ksi or greater and a temperature of 68 F.
e.Steel Bearings . Face the bearing surfaces of the bearings as required by DIVISION 700 . When specified on the Contract Documents, provide structural steel that is hot dip galvanized in accordance with ASTM A 123. When specified on the Contract Documents, pain t the surfaces of the bearings as required by DIVISION 700.
f.Pot Bearings. Provide an elastomeric portion satisfying subsection 1701.2c. except that the nominal hardness will lie between 50 and 60 on the Shore A scale. Fabricate the pot and piston of structural steel that complies with AASHTO M 270 Grade 36, 50 or 70 as shown in the Contract Documents. Do not use weathering steel for any of these components. Pr ovide brass seal rings that comply with ASTM B 36 for rectangular cross- sections or Federal Specification QQB62 Composite 2 for circular cross-sections.
g.Disc Bearings. Provide PTFE and stainless steel materials satisfying subsection 1701.2d . Construct disc from polyether urethane with a Shore A Durometer hardness of 55 ± 10. Provide steel satisfying subsection 1701.2f . Do not use weathering steel for any of these components. Design and use materials consistent with limitations and criteria from AASHTO’s "L RFD Bridge Construction Specifications".
h.Speherical Bearings. Use woven PTFE material. Do not us e weathering steel for any of these components. Design and use materials consistent with limitations and criteria from AASHTO’s "LRFD Bridge Construction Specifications".
i.Anchor Bolts . Provide AASHTO M 314 Grade 36 or Gr ade 55 anchor bolts that comply with
Division 1600 — When specified on the Contract Documents, provide anchor bolts, nuts, and washers that have
been hot dip galvanized in accordance with ASTM F 2329. 1701.3 TEST METHODS As specified in the various AASHTO and AS TM standards cited in this specification. 1701.4 PREQUALIFICATION None required. 1701.5 BASIS OF ACCEPTANCE
a.Plain Elastomeric Pads . Receipt and approval of a Type D certification as specified in DIVISION 2600 .
b.Bearings (all types except Steel) Accepted on the basis of the following:
1.Receipt and approva l of a Type A certification as specified in DIVISION 2600 .
2.Receipt and approval of a certif ication from the bearing producer de scribing the results of a visual examination by QC personnel performed during the testing of AASHTO M 251, section 8.8.2. Reject bearings having cracks exceeding the criteria of section 8.8.2, having bulging that sugg est poor laminate bond, or bulging patterns that imply laminate placement doe s not meet the tolerance requirements of M 251, section 6. Include the following with the certification:
a.A statement certifying the bearings confor m to the design, material, and manufacturing requirements of this specification.
b.High resolution pictures of all four sides of the loaded bearing. Take the pictures from an angle and distance, using appropriate lighting, to clearly indicate the amount of bulging and bulging patterns.
Source: Kansas Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 787–792 of 978.