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45 TABLE 8 Comparisons of selected design database reinforcement requirements for inflection point regions, as an infrastructure of tools for making this type of evaluation shown by the results for Number 5 in Table 8, effectively by providing access to databases of bridge structures. It con- illustrates this point. sists of three main components: (1) Generating input data for various design programs; (2) Collecting and Displaying the output on a common viewer (post-processing); and (3) Cre- 3.8 UTILIZATION OF NCHRP PROCESS 12-50 ating access to the archived data through the World Wide Web. The NCHRP report on Process 12-50 provides sample Code developers wish to be able to accurately assess the codes written in Visual Basic, Visual C++, and FORTRAN effect of changes in specifications on the safety and economy that developers can use to generate input data. It also presents of the transportation infrastructure. NCHRP Process 12-50 is a common viewer program that enables the developers to find
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46 problems with their codes or programs by comparing results. calculations, was developed. The Design Database intro- Process 12-50 uses XML format, in which output data can be duced in Appendix H includes those newly created members. distributed. In addition, creating the database was achieved either man- Process 12-50 was used in this project to input the design ually or by using spreadsheets to encompass the large range of database. The existing NCHRP bridge database was design stress levels or sectional shapes being used in practice. reviewed. However, it was found to not contain the range in The NCHRP Viewer program can be used to display the out- member types and shear design stress levels suitable for com- put including the required amount of shear reinforcement. This paring required amounts of shear reinforcement by different post-process program allows display of basic member data and design code provisions. In addition, the information in the comparison of the results obtained by various design methods. NCHRP database was not sufficient for shear design calcu- The Design Database is available in the accompanying CD. lations in accordance with other than AASHTO LRFD Directions for viewing the data, as well as the description of specifications. Thus, a new set of members, suitable for shear the database, are provided in Appendix I.