RM Analyzer Help

Ultimate Load Check > Options

The actions UltLc and UltSup allow for performing different checks in detail. With the buttons and options the user governs the procedure to be applied.

Setting

Description

Functions

Setting	Description
Ultimate load check	The program performs an classical ultimate load check for the current cross section for the design forces. Only the cross-section geometry governs resistance, the cross-section development in longitudinal direction (effects of inclined chords) are not considered.
Reinforcement design	Dimensioning of mild steel reinforcement. The program tries to find equilibrium between the internal forces and design forces within the strain limits. If this is not possible, the reinforcement content of the relevant reinforcement group is increased until equilibrium is reached.
Tensile force	Calculation of the Tensile force for reduced primary pre-stressing forces (currently not available).

Switch 2D/3D

Setting	Description
2D	The program performs separate checks for My+Nx and Mz+Nx, with the other bending component set to zero in each case.
3D	The program performs a checks for the full 3-dimensional stressing state.

Options

Setting	Description
Ult (only for Ultimate load check)	Actual ultimate load check. The program iterates the strain plane until getting equilibrium between the internal forces and the design forces.
Nx (for Ultimate load check)	Calculation of the capacity limit with respect to normal force. The normal force is increased with moments being fix, until the limit state is reached.
My (for Ultimate load check)	Calculation of the capacity limit with respect to the bending moment My. My is increased with Nx and Mz being fix, until the limit state is reached.
Mz (for Ultimate load check)	Calculation of the capacity limit with respect to the bending moment Mz. Mz is increased with Nx and My being fix, until the limit state is reached.
Nx (for Tensile force)	Calculation of the tensile force when the capacity limit with respect to the normal force Nx is reached.
My (for ultimate load check)	Calculation of the tensile force when the capacity limit with respect to the bending moment My is reached.
Mz (for ultimate load check)	Calculation of the tensile force when the capacity limit with respect to the bending moment Mz is reached.