| Matrix or Vector | Shape Functions | Integration Points | 
|---|---|---|
| Stiffness, Mass, and Stress Stiffness Matrices; and Thermal Load Vector | Equation 11–184, Equation 11–185, and Equation 11–186 | 4 | 
| Pressure Load Vector | Equation 11–184, Equation 11–185, and Equation 11–186 specialized to the face | 6 | 
| Load Type | Distribution | 
|---|---|
| Element Temperature | Same as shape functions | 
| Nodal Temperature | Same as shape functions | 
| Pressure | Linear over each face | 
Reference: Zienkiewicz([39])
Structures describes the derivation of structural element matrices and load vectors as well as stress evaluations. General Element Formulations gives the general element formulations used by this element.