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l.onghJdinal SECTION A-A onalmclion Jolnl 100’ Anchor Slab (Cast) EJdstlngc2oncmle Pnmnrnt PeMmlssiMe czonstNction JolIlt DETAIL - RAISED KEY CONSTRUCTION JOINT FIGURE 2 - Lug Anchor Treatment
(3) Transverse Construction Joints FHWA TECHNICAL ADVISORY T 5050.14 June 5, 1990 (a) A construction joint is formed by placing a slotted headerboard across the pavement to allow the longitudinal steel to pass through the joint. The longitudinal steel through the construction joint is increased a minimum of one-third by placing 3-foot long shear bars of the same nominal size between every other pair of longitudinal bars. No longitudinal steel splice should fall within 3 feet of the stopping side nor closer than 8 feet from the starting side of a construction joint. Refer to paragraph 4b(l)(e) for recommended splicing patterns. If it becomes necessary to splice within the above limits, each splice should be reinforced with a 6-foot bar of equal size. Extra care is needed to ensure both concrete quality and consolidation at these joints. If more than 5 days elapse between concrete pours, the adjacent pavement temperature should be stabilized by placing insulation material on it for a distance of 200 feet from the free end at least 72 hours prior to placing new concrete. This procedure should reduce potentially high tensile stresses in the longitudinal steel. (b) Special provisions for the protection of the headerboard and adjacent rebar during construction may be necessary. f. Leave-Outs Temporary gaps in CRCPs should be avoided. The necessity for leave-outs is minimized by giving proper consideration to the paving schedule during project design. The following precautions can be specified to reduce distress in the leave-out portion of the slab in the event a leave-out does become necessary. '. (1) Leave-outs require 50 percent more longitudinal deformed bars of the same nominal size as the regular reinforcement. The additional reinforcement should be spaced evenly between every other normal pavement reinforcing bar and should be bonded at least 3 feet into the pavement ends adjacent to the leave-outs. All regular longitudinal reinforcement should extend into the leave-out a minimum of 8 feet. Required slices should be made the same as those in normal construction. (2) Leave-outs should be paved during stable weather conditions when the daily temperature cycle is small. Because of the closeness of the steel extreme care should be exercised in placing and consolidating the concrete to prevent honeycombing or voids under the reinforcement 3.6.9
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3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9
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h. The most common types of pavemen
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Fidh'X TECHSiC.AL .AL1L~!SC!?'r' T
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F!-ih'.A TECHN1C.U XDI'IS3RY T 5010
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TABLE 3. MAXIMUM RECOMMENDED TIEBAR
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?%‘.4 TECHWIC.4L ADVISORY T 3040.
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. C ‘i!\‘*A . . T’ECHSIC4L .U
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CH!\‘.?l TECZSIC'.AL ADVISORY T 5
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TIEBAR PULL-OUT TESTS Proper consol
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'1iK.A TECHNICAL XDVISCIRY T 5040.3
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TECHNICAL PAPER 89-03 -- Benefits o
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critical, as the restraint forces d
Page 28 and 29: TECRWICAL PAPER 89-04 -- PREFORMED
Page 30 and 31: maximum expansion. This will allow
Page 32 and 33: When sealing a width of two lanes o
Page 34 and 35: BXAHPLB B: The State elects to chan
Page 36 and 37: References 1. l'Design and Control
Page 38 and 39: Based on Kansas Standard Plan 707.2
Page 41 and 42: SlJbJect- Dowel Bar Inserters Date
Page 43 and 44: Dowel Bar Placement: pechanical Ins
Page 45 and 46: TABLE OF CONTENTS Abstract . . . .
Page 47 and 48: In July of 1988 this need for addit
Page 49 and 50: _i -. Corinu Procedure: A metal det
Page 51 and 52: PLACEMENT TOLERANCE SPECIFICATIONS
Page 53 and 54: placing dowels in a satisfactory cl
Page 55 and 56: ar inserter. On the first inserter
Page 57 and 58: extensive searches if a problem is
Page 59 and 60: SUMMARY AND CONCLUSIONS (continued)
Page 61 and 62: TABLE 1. DESCRIPIIOR OF PROJECYS IW
Page 63 and 64: TABLE 3. RANDOM SAMPLING SEQUENCE F
Page 65 and 66: .FICURE 1. COWEURAT?ON AND NuMBml;
Page 67: : __ APPENDIX A. DETAILED DATA FOR
Page 70 and 71: FHWA TECHNICAL ADVISORY T 5080.14 J
Page 74 and 75: FHWA TECiNICAL ADVISORY T 5080.14 J
Page 83: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. REFE
Page 86 and 87: CASE STUDY - CONTINUOUSLY REINFORCE
Page 88 and 89: serve as a leveling course, to corr
Page 90 and 91: v. Details of Field Review It was n
Page 92 and 93: practice, chloride contents above 1
Page 94 and 95: pavement is constructed, we also re
Page 96 and 97: Sing1 e Lane Longitudfnal Bat CRCP
Page 99 and 100: LATERAL LOAD DISTRIBCTION AND THE L
Page 101 and 102: PURPOSE This paper summarizes data
Page 103 and 104: .A thxd study was ?e?ormed 5~ :he S
Page 105 and 106: __. Table 2. Encroachments on outsi
Page 107 and 108: The results presented by Ezery :\*e
Page 109 and 110: from the siab edge. The number of t
Page 111 and 112: -1 5 13 19 25 31 37 43 49 55 51 6i
Page 113 and 114: .A ::cleoier:Cai ?'.'3iU2::0:: Oi 5
Page 116 and 117: .M~&$iU~eTle~t!S and eStZbliSkfXl t
Page 118 and 119: Photos 5 k 6 - Two examples of wide
Page 120 and 121: 0 ,A KC pavement that is widened 18
Page 122 and 123: 13. Gordon K. Ray, ‘Concrete Shou
Page 125 and 126: I-60 Lmqitudinal CrackFnq - l988 in
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ill operatfms were cm@etM by July 1
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US. Deparmenr ol Transpoftarxx Fede
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FHWA TECHNICAL ADVISORY T 5080.17 J
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FHWA TECHKICAL ADVISORY T 5080.17 J
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L 2 R'RWA TECEXICAL ADVISORY T 5080
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FFIWA TECHNICAL ADVISORY T 5080.17
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FHwA TECHNICAL ADVISORY T 5080.17 J
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7i%iA TZCHKICAL ADVISCRY T 5C80.17
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1. Platerials FHWA TECHNICAL ADVISO
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3. Mixins B. Batchers (1) (2) (3) (
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1. 2. 3. 4. 5. FHWA TECHNICAL ADVIS
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8. TEMPERATURE CONTROL FHWA TECHNIC
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1. SUBBASE TRIYMING FHWA TECHNICAL
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12. 13. 14. TRUCK REGUIREMENTS FHWA
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16. THICKNESS TEST FHWA TECHNICAL A
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25. 26. (cl (d) FHWA TECHNICAL ADVI
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IO IS 20 25 x> Air temp., OC To use
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FHWA TECHNIC= ADVISORY T 5080.17 ju
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FHWA TECHNICti ADVISORY T 5080.17 J
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RSQUIREMENTS 1’. General Retireme
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48Cl Sum&y of State Highway Practic
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Quotatims (con’t~ (30); &lignment
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We recognize that some States have
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