Regarding Tension cable design for Skylight (Horizontal cable)


I need to design a Skylight which is having  Segmented  two way Tension rods system (Please see attached PDF).  But I am not getting whats element to be used for these tension rods.  If I am using Tension rod I cannot do Second order analysis and If I am using cable with zero tension then its showing thousands of warnings. I tried with beam element releasing moment but this also showing compression in tension rods which is not correct.Please suggest something to resolve this issue.