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| View Original: | Bending steel girders officials steel industry.tif (10021x7985) | |||
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| Keywords: Bending steel girders officials steel industry.tif Photograph en Bending huge steel girders Washington D C Sept 23 At the U S Bureau of Standards officials were witnessing the testing of rigid steel frame knees that are used in grade eliminations such as over-passes under-passes bridges etc This photo shows the girder or knee placed into the huge 600 000 lb testing machine in preparation for the test This welded rigid steel frame knee which was designed to withstand 50 000 pounds had a maximum load of 153 600 lbs placed on it before it buckled Harris Ewing photographer 1937 September 23 LOC-image hec 23410 accession number LC-DIG-hec-23410 digital file from original negative Call Number LC-H22- D-2403 P P Rights Advisory No known restrictions on publication Title from unverified caption data received with the Harris Ewing Collection Date from related adjacent neg LC-H22-2404 Gift; Harris Ewing Inc 1955 General information about the Harris Ewing Collection is available at http //hdl loc gov/loc pnp/pp hec Temp note Batch five Bending huge steel girders jpg PD-Harris-Ewing National Bureau of Standards Uploaded with UploadWizard | ||||