Lateral Strength of Mulled and/or Stacked Window Frames
Lateral Strength of Mulled and/or Stacked Window Frames
(OP)
Mulling and/or Stacking of residential window frames seems to be a relatively common thing to do. (mulling = tieing multiple window frames together horizontally) (stacking = tieing window frames together vertically). Obviously, this reduces the strength of the assembly to resist wind pressures. However, I never see contractors hiring engineers to make sure these types of window systems meet any sort of code pressures. Is anyone familiar with this issue and how it might be regulated?






RE: Lateral Strength of Mulled and/or Stacked Window Frames
RE: Lateral Strength of Mulled and/or Stacked Window Frames
Great in theory, but we test a lot of windows and they flex and leak from the beginning!