Browse Forums Flooring & Floor Covering 1 Feb 22, 2020 11:30 am So I’ve got a slight issue with a sagging structural beam underneath the house. The beam spans 7.5m under the house and has one post at the 3.5m mark, leaving 4m on the other side. Long story short it roughly has a 23mm sag in the middle, resulting in a sagging of the lower floor above. Does anyone know what would be the cheapest most effective fix for this? Lift it and put in an additional post or additional beam, replace the beam? We’re wanting to put on laminate flooring but the slope of the floor is a bit of an issue. Was going to just use a bit of filler underneath The laminate but soon realised the bigger issue underneath. Any ideas or recommendations is greatly appreciated! Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: Sagging timber structural beam. 2Feb 22, 2020 8:07 pm Either adding or ‘sistering’ a new bearer adjacent to the existing bearer or adding a new post is ok. This is the problem of long spans and using the minimum size, they are designed to deflect 1/360 of the span, so this bearer will deflect about 12mm at best. Individual beams can deflect more depending on the grading system. Lvl timber is better since there is minimal variation between beams. I would probably add a new larger lvl adjacent to the old one, span tables are readily available. Use a bottle jack and a couple of acrow props to get the bend out over a few days. Then bolt the lvl to the old bearer with 12mm bolts staggered at 600 centres. Re: Sagging timber structural beam. 3Feb 24, 2020 9:06 am This is a problem resulting from incorrect design Since you are altering the structural beam you will need to contact your Local Council building Department They will recommend that you submit certified engineering drawings for checking. OT.. Just remember if it's non compliant the alterations may complicate future insurance claims Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Sagging timber structural beam. 4Feb 25, 2020 10:32 am If it is just that bearer it could be a localised load, bookcase or something else heavy causing the deflection. Technically council needs to be informed of structural renovations but this is well within the scope of a builder/carpenter and can all be done within engineered lvl span tables or AS1684 span tables. It doesn’t need an engineer as it is within the scope of AS1684. Re: Sagging timber structural beam. 5Feb 25, 2020 1:21 pm Pulse If it is just that bearer it could be a localised load, bookcase or something else heavy causing the deflection. Technically council needs to be informed of structural renovations but this is well within the scope of a builder/carpenter and can all be done within engineered lvl span tables or AS1684 span tables. It doesn’t need an engineer as it is within the scope of AS1684. Thanks For your advice Pulse, looking at the span guide it appears that it is a bit long and a new column should do it. Hello everyone, After some suggestions and ideas about how to put a concrete path around the drop edge beam area on our new build. We are required to have a concrete path… 0 12852 The distance between my DEBs varies from 4.1m at the narrowest to 8.1m at the widest. 5 27261 |