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bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members

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Page 1: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 2: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 3: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 4: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 5: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 6: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 7: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 8: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 9: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 10: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 11: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 12: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 13: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 14: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 15: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 16: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 17: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 18: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 19: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 20: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 21: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members
Page 22: bridges1914 - The Baltimore & Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt, as a mod Of the Howe truss. In this type of truss the vert Ical web members