The best replacement for beams is girders.

The best alternatives to beams are rated as following:
★★★★★  girders
★★★★★  3sgte
★★★★★  joists
★★★★★  wood beams
★★★★  h beams
★★★★  sidebottom
★★★★  cannons
★★★  trusses
★★  steel beams
★★  low beams
★★  columns
★★  low beams in fog
★★  brights
★  i beams
★  high beams in fog
★  a-arms
★  fog lights
★  lvl
★  turrets
  3sge
  rectangular beams
  high beams
  fan coils
  vav

Your alternative for beams is not listed? Suggest!
Speaking about beams, one probably shouldn't forget about particle beams.

Other search terms related to beams and their ratings are:
★★★★★ particle beams
★★ lights
You have in mind a companion for beams and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of beams in all years. Click on graph for more.
beams
girders
3sgte