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194State 13: Included in original document is a list of bridges on the National Register forKansas. They are from 1861-1939 and consist of High Truss and Low Truss Structures. -Also another contact is included.State 18: Excellent reference: "Wrought iron - Its Manufacture Characteristics andApplications" Second Ed. A.M. Byers Company, Pittsburg PA, 1947 - James Aston andEdward B. Story.State 22: No welding for old steel structures, so No welding for wrought iron too.State 27: Ask the European Countries that have more of them. England has one.State 30: Most of the wrought iron is in structures that have tension members that areeyebars. These eyebars had to have been forged so therefore are wrought iron.State 31: If a more accurate allowable stress value is required, either for load rating or fordesigning a rehabilitation project, coupon samples of the iron are taken to establish thesevalues for the specific bridge.State 35: The bridges are not maintained by DOT and the local agencies maintain them.County 1: Have not had to do major repairs on the bridges -so don't know if heatstraightening, welding or riveting is permitted.County 5: The county maintains 5 covered bridges.County 7: Maintenance procedures, if any, are prepared by contractor.County 8: Both remaining bridges on federal - aid for repair (2002) and relocation (113)bridge (120) was relocated in 2001.County 12: Have not done any heat straightening or welding on the bridges.County 14: A bridge that was in this county was rehabilitated in 1996 through a stateproject.County 19: We probably will not rehabilitate any more steel trusses in our county.
195Appendix C. Supplementary Photographs of Experimental TestingThe following pages consist of supplementary photographs taken duringexperimental testing completed in this study. This testing consisted of micrographs,chemical analysis, hardness tests, tensile coupon tests, fatigue tests, charpy impact tests,and eyebar connection tests of wrought iron machined from members of two existinghistorical bridges in Indiana.
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Purdue UniversityPurdue e-PubsJTRP
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1. Report No. 2. Government Accessi
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epairing a bent wrought iron tensio
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vPageCHAPTER 3TEST PROCEDURES FOR M
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ixLIST OF FIGURESFigurePageFigure 1
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xiFigurePageFigure 3.30 Top View of
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xiiiFigurePageFigure 5.12 Typical T
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xvAppendix FigurePageFigure D.7 Ini
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viiiAppendix TablePageTable A.5 Det
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iiiThe authors would also like to t
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2but also what material properties
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4microstructure of the metal. The c
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62. LITERATURE SEARCHBefore experim
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8imperfections, the performance of
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10wrought iron. Adding the slag aft
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12method for manufacturing wrought
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14patents for their process and tra
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16This method of testing of structu
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18plot of this percent elongation d
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20significant variation in the perc
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22The practice of restoring histori
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24Elleby, Wallace W. Sanders, F. Wa
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26From all the surveys that were di
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28Table 2.1 Average Ultimate Streng
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30Figure 2.3 Wrought Iron “Sponge
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32Histogram of Kirkaldy Wrought Iro
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34Percent Occurance in Range - %45.
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3660Combined Wrought Iron BarsTensi
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38The Bell Ford Bridge consisted of
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40Two. These samples were taken fro
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42specimens were of constant cross
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44Along with rectangular tensile co
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46After the initial test loading wa
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483.6 Fatigue TestingTo develop a b
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50The final specimen category consi
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52This analysis was completed using
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54After the initial test was comple
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56completed, but before the surface
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58readings, load cell readings and
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60Figure 3.3 Donated Eyebars 4 and
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62Figure 3.7 Heated Areas in Blue o
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64Figure 3.11 Detail Used in Groove
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66900080007000y = 27.153xR 2 = 0.99
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68Figure 3.19 Charpy Impact Testing
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70Figure 3.23 Eyebar Connection in
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72Figure 3.27 Eyebar A After Filler
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74Figure 3.31 Side View of Finished
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76Figure 3.35 Front View of Eyebar
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78strength from the existence of pe
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80The carbon content present in the
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82value may not be very accurate bu
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84strengths was found to be 29,940
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86wrought iron bars were investigat
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88stresses are induced. These perma
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90toughness the material. The test
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92From the finite element analysis,
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94Table 4.1 Chemical Analysis of Ey
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96Table 4.3 Tensile Coupon Test Res
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98Table 4.5 Charpy Impact Test Resu
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100Table 4.7 Comparison of Strain G
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102Figure 4.1 Typical Micrograph of
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104Figure 4.5 Fracture Surface of D
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106Comparison of Tensile Strengthfo
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108Combined Wrought Iron Bar Histor
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110Figure 4.17 Macrograph of Weld u
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112Figure 4.21 Cleavage Fracture of
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Figure 4.25 Elongation of Hole in E
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116signs on or near the bridge that
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118testing of historic wrought iron
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120so that they would act in symmet
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122The reasons for the differences
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124The second corrosion pattern mod
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126Keating (1984) stated that the s
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128charcoal fire until it is red ho
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130Figure 5.3 Picture of Bottom Cho
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132Figure 5.7 Using Force After Usi
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134Figure 5.11 Reassembling a Pin C
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1366. SUMMARY, CONCLUSIONS AND IMPL
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138rectangular in shape. These eyeb
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140were joined together with a full
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1424. The Charpy impact energy of t
Page 164 and 165: 144connections are unsymmetrical, i
Page 166 and 167: 146LIST OF REFERENCESAASHTO (1998).
Page 168 and 169: 148Hodgkinson, Eaton (1840). Experi
Page 170 and 171: 150Appendix A. Data Collected From
Page 172 and 173: 152Table A.1 Wrought Iron Bar Tensi
Page 174 and 175: 154Table A.1 (continued) Wrought Ir
Page 176 and 177: 156Table A.2 (continued) Wrought Ir
Page 178 and 179: 158Table A.3 Wrought Iron Angle Ten
Page 180 and 181: 160Table A.4 (continued) Summary of
Page 182 and 183: 162Table A.4 (continued) Summary of
Page 184 and 185: 164Table A.5 (continued) Detailed I
Page 204 and 205: 184Table A.7 Tensile Strength Data
Page 206 and 207: 186Table B.1 Example Historic Wroug
Page 208 and 209: 188DepartmentofTransportationIf you
Page 210 and 211: 190CountyIf your organizationdoes m
Page 212 and 213: 192County 16: County bridge inspect
Page 216 and 217: 196Figure C.1 Diagrams Showing Loca
Page 218 and 219: 198Figure C.3 Heating of Eyebar fro
Page 220 and 221: 200Figure C.7 Double V Butt Joint u
Page 222 and 223: 202Figure C. 11 Welded Tensile Coup
Page 224 and 225: 204Figure C.15 Tensile Coupon from
Page 226 and 227: 206Figure C.19 Cooling Bath with Su
Page 228 and 229: 208Figure C.23 Side View of Eyebar
Page 230 and 231: 210Figure C.27 Eyebar End Connectio
Page 232 and 233: 212Appendix D. Welding Procedure fo
Page 234 and 235: 214D.2 Filler Weld for Eyebar Conne
Page 236 and 237: 216Figure D.1 Weld Joint Detail Use
Page 238 and 239: Figure D.5 Completed Weld Before Su
Page 240 and 241: 220Figure D.7 Initial Pass Pattern
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