Descriptions of Reinforcement Results in RFEM 5

The descriptions of the reinforcement in the Results navigator are defined as follows:

A_{s,-z (top)}

• Upper longitudinal reinforcement; that is, all longitudinal reinforcement that is above the centroidal axis of the cross-section (see Image 01)
  

  1 Concrete Cross-Section with Reinforcement and Centroidal Axis

A_{s,+z (bottom)}

• Bottom longitudinal reinforcement; that is, all longitudinal reinforcement that is below the centroidal axis of the cross-section

A_s,T

• Total longitudinal reinforcement of the cross-section that is required due to torsion

A_{s,-z (top)} + A_s,T/2

• Upper longitudinal reinforcement (see above) plus one-half of the required longitudinal reinforcement from torsion

A_{s,+z (bottom)} + A_s,T/2

• Bottom longitudinal reinforcement (see above) plus one-half of the required longitudinal reinforcement from torsion

a_sw,T,stirrup

• Stirrup reinforcement from torsion
• Always single-leg, which means: reinforcement content from one leg on one stirrup member
• Resulting from the theoretical assumption of a spiral stirrup reinforcement

a_sw,V,stirrup

• Stirrup reinforcement from shear force
• Two-, three-, or four-leg, which means: reinforcement content from one leg on two, three, or four stirrup members
• Setting the number of legs under stirrup parameters, Window "1.6 Reinforcement", "Stirrups" tab; see Image 02
  

  2 Stirrup Parameters: Number of Sections

2*a_sw,T,stirrup + a_sw,V,stirrup

• Total stirrup reinforcement from torsion and shear force
• In this case, two-leg for torsion, therefore Factor 2 before a_sw,T,stirrup, shear reinforcement according to the setting from Image 02.