Load Test of 120-ft Precast, Prestressed Bridge Girder*


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Title: Load Test of 120-ft Precast, Prestressed Bridge Girder*

Author(s): Fazlur R. Khan and Andrew J. Brown

Publication: Journal Proceedings

Volume: 55

Issue: 7

Appears on pages(s): 139-150

Keywords: no keywords

Date: 7/1/1958

General design data are given for four prestressed concrete highway bridges and two prestressed concrete railroad bridges, built at the U. S. Air Force Academy site. One full size 120-ft girder was tested in two stages, leading to final destruction, in order to check workmanship and validity of design assumptions. First the girder alone was loaded to cracking. Then a 9 ft wide and 7 in. thick slab was cast to form a composite unit which was loaded to failure. Results of both tests are discussed in detail.