Working With Beam Calculations > Beam Loads > Live Load Reduction

To prevent frustration from unneeded steps during calculation launches, beams and girders are pre-screened to determine if they are eligible for live load reduction. Beam and girder elements must meet at least one the following criteria to be eligible for live load reduction during calculation launch:

•Beams:

oSupports a non-hosted point load of case Live (LL) or Roof Live (LR)

oSupports a non-hosted line load of case Live (LL) or Roof Live (LR)

oSupports a hosted line load of case Live (LL) or Roof Live (LR)

oSupports a floor with hosted area loads of case Live (LL) or Roof Live (LR)

•Girders:

oMeets any beam criteria listed above

oSupports a point load reaction of case Live (LL) or Roof Live (LR) hosted to a tributary beam

oSupports a “Load-Linking” reactions of case Live (LL) or Roof Live (LR) from a tributary beam

The use of the above restrictions permit ENERCALC for Revit to clearly determine whether the code provisions for reduction of live and roof live loads are applicable. If none of the above criteria are met, then options for LL reduction will not be presented during the beam calculation launch.

ENERCALC for Revit permits only one factor for floor live load (LL) reduction and one factor for roof live load (LR) reduction on a particular beam calculation. These reduction factors will be applied uniformly to all live loads (LL) or all roof live loads (LR) found on the beam. ENERCALC for Revit does not support the ability to reduce individual loads of the same case by differing factors within a single calculation. As a result, if code provisions limit or prohibit the reduction of any specific live load found on the beam, this restriction will necessarily be applied uniformly to all live loads found on the beam.

Live Load Reduction Limitations