Structure:(Unit:mm)
Truss Type
Line arc
Span L:    
Height h: 
Width b:  
divided n:
arch height f:   
Materials:(Unit:KN,mm)
Upper diameter:  
Upper thickness: 
Lower diameter:  
Lower thickness: 
Middle diameter:
Middle thickness:
Elastic:

Support:
Node ID:
Support type fix roll
Direction: u v w                 
Loads:(Unit:KN,m)
Node ID: --
Magnitude: X Y Z