FERMO | Extensions - RIB Software

The best of both worlds

The combination of the prefabricated girder programs RTfermo and FETT is carried out in 2 stages through the successor program FERMO: RTfermo will be discontinued at the end of 2018 and FETT at the end of 2019. RTfermo will remain in product maintenance until 2019 and FETT until 2020.

The modular concept for FERMO corresponds in the broadest sense to the one of FETT, in which the use of high-performance concrete and the fire protection design was integrated into the reinforced concrete base module.

Module Design – bridge construction

basics for bridges according to EN 1990 appendix A2 and corresponding national basics for the general building construction, respectively, structural engineering according to EN 1990 appendix A1 and corresponding national annexes for DE, AT, SK/CZ and UK
live loads according to EN 1991-1
complete reinforced concrete and prestressed concrete design according to DIN 1045-1, EN 1992 1 and corresponding national annexes for DE, AT, SK/CZ and UK
specification of the longitudinal reinforcement as single or distributed reinforcement
annexes for DE, AT, SK/CZ and UK
bridge live loads according to EN 1991-2
complete reinforced concrete and prestressed concrete design according to DIN Fachbericht 102, EN 1992 2 and corresponding national annexes for DE, AT, SK/CZ and UK
input of the longitudinal reinforcement only as distributed reinforcement
damage equivalent coefficients for the fatigue load model for road bridges
main tensile stresses SL

Module design – building construction

basics for the general building construction, respectively, structural engineering according to EN 1990 appendix A1 and corresponding national annexes for DE, AT, SK/CZ and UK
live loads according to EN 1991-1
complete reinforced concrete and prestressed concrete design according to DIN 1045-1, EN 1992 1 and corresponding national annexes for DE, AT, SK/CZ and UK
specification of the longitudinal reinforcement as single or distributed reinforcement

with Module refurbishment – building construction

bearing capacity analysis for refurbishment with utilization levels for a specified longitudinal and shear reinforcement under consideration of possible corrosion damages
no design – only the utilization levels, respectively, residual safeties are being determined

Module post-tensioning

single-level prestressing
double-level prestressing, if stressing bed prestressing as 1. level
database with all common prestressing methods
quick and easy input of the tendons
multiple prestressing conditions – prestress, release, post-tension per side
anchorage with / without wedge slip
losses due to friction
prestressed concrete design under consideration of creep, shrinkage and relaxation

Module fatigue design

analysis against fatigue of the longitudinal reinforcement and the prestressing steel
analysis against fatigue of the shear reinforcement and stirrups
calculation of the fatigue strength by specifying the number of load cycles
consideration of the dynamic factor in building construction
consideration of the damage equivalent coefficients in bridge construction
main tensile stresses FLS