Question: The forces shown are the resultant downward loads on sections of the flat roof of a building because of accumulated snow. If the snow represented

The forces shown are the resultant downward loads on sections of the flat roof of a building because of accumulated snow. If the snow represented by the 580-kN force is shoveled so that the this load acts at E, determine a and b knowing that the point of application of the resultant of the four loads is then at B.

The forces shown are resultant downward building because

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