Browse Forums DIY, Home Maintenance & Repair 1 May 27, 2019 4:23 pm I've recently built a pergola with posts that are 5.4m apart and the beam i used 240x45 mgp10 has started to sag in the middle. If i replace the beam with 240× 45 f17 kd hardwood beam would that fix the sagging issue or would I need additional structural support? Re: Sagging pergola beams 2May 28, 2019 11:10 am Hi DIYGuy99 More info, is the beam exposed to elements, also a sketch helps Try a 360 x 63 mm LVL Here LVL Span Table hth Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs THanks , l got a licensed building inspector to look at the rust, he said its just surface rust and it would take many years to become a problem because the beams are so… 22 28012 if l cannot get a sandblaster would a sander with sandpaper be better then a wire brush 4 7333 |