I’m modeling a simply one span composite beam to learn how program works beacause it’s my first steps with Sofistik. Following the tutorial, I created the cross-section shown on the picture
Load of model is a line load of value 10 kN and beam have 10 m length. So i supposed that the correct displacement of this beam should equal 5/384*ql^4/EI = 0,34 mm.
But the result in program is diffrent and maximum displacment equal 0,445 mm.
What could i have done wrong? I will be very grateful for any suggestions.