## A Treatise on the Strength of Bridges and Roofs: With Practical Applications and Examples for the Use of Engineers and Students |

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added added to Eq affected amount angles apply bears becomes belongs borne braces centre changed compression consequently considered constant-load counterbraces depth determined distance divided double truss end panel equal equation example feet figure following table form the following full load given gives greater greatest half Hence horizontal chord horizontal strain inclined braces length less load extends longitudinal strain lower chord maximum measured ment movable load moving load multiplied number of panels obtain opposite panel end panel load panel points partial load passing points of Simple proportion rafter reaction represent right abutment segment shown Simple Truss sion Strains in Tons struts Substituting the values tension uniform unloaded abutment upper chord Values vertical component vertical strain weight whence

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