Applied on pretension node K across entire pretension
section
13.179.1. Introduction
The element is used to represent a two or three dimensional section
for a bolted structure. The pretension section can carry a pretension load.
The pretension node (K) on each section is used to control and monitor the
total tension load.
13.179.2. Assumptions and Restrictions
The pretension element is not capable of carrying bending or torsion
loads.