Analysis model features This section looks at analysis models (refered to in Tekla Structural Designer as solver models) and how they are affected by various property and setting choices. Click the links below to find out more: Solver models Sub models One-way and two-way load decomposition Work with meshed walls and slabs Diaphragm action in roof panels and slabs Rigid offsets and rigid zones in concrete members Cracked, partially cracked, and uncracked concrete members See alsoBackground to the Analysis/Design procedures (eLearning)