The length of the sun, so that the vertical component of the reaction hinge D was 6 kN when the intensity of the distributed load q = 6 kN / m and dimensions DE = AE = VS = CE.

you will get a solution to the problem 3.2.23 (Chapter 1 - statics topic - 3.2: Balance statically determinate system of bodies under the influence of a plane system of forces) on the theoretical mechanics of collection of short tasks Kep OE YA.A . Viba, OP Grapis, JA Svetinysh and others. Publishing Moscow / Graduate School / 1989, 2009, 2012. The task is made in the format word (typed or hand-written decision in a Word) or in manuscript form in the format gif, packed to the archive zip (open on any PC) .After checking the solutions would be very grateful if you leave your positive feedback.