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@RonnyRaygun, never too late buddy. No probs, calcs are attached. @jeds, just waiting on someone to calculate current overall deflection. Will let you know soon.

@cdbe, I will definitely query with SE. @jeds, the inner beam has deflected more than the outer beam. The inner beam deflection is 1.5mm greater than the outer beam. The beams have been installed for 3+ months, that said there are currently no live loads. It's a complete empty house...

Thanks for the replies guys. 2nd SE also noted that in practice the inner beam will take most of the load. Would that in practice increase the deflection on the inner beam? as the current deflection calculation is based on the point load being spread across both beams. If so what would be the...

Hi Jeds, Beams have been ordered and already installed. I only recently picked up on the miscalculation as it was pointed out to me by another SE who I went to advice for. Unfortunately changing the beams is not an option. I'm most likely to rebuild a portion of the wall removed to reduce the...

Hi Tony, Correct, B2 beams are 203 x 133 x 30. Correct again, the SE has assumed the beams will work together, please see attached load calculation. The SE has assumed that the beams will work together. Not sure if this has any bearing but the beam span is 5.1, which include 250mm each side to...

Hi Tony, Just to add to the above. The figures relate to the total load. Figures for beam B2 below. Deflection LL deflection = 51.3 x 1e8/(2 x 210,000 x 2,900) = 4.2 mm (L/1211) OK TL deflection = 221.4 x 1e8/(2 x 210,000 x 2,900) = 18.2 mm (L/281)

Hi Tony, Your response confirms my suspicions that something wasn't quite right. The outside wall B2 is supporting has a pitched roof attached (via, wall plate & roof hangers). Due to the increased deflection calculated @ 18.2mm, do you think the increase deflection may cause an issue with the...

Hi guys, SE originally provided calculations for 2 steel beams. B1 supporting an interior wall, B2 support the rear side of the house. B1 is bolted to the centre of B2 so the steels forms a T shape (pic attached). The SE forgot to add the point load of B1 on B2. I have now installed the steels...
9. ### is RSJ correctly supported?

Cheers Freddie, I've checked and the steel is as should be.
10. ### is RSJ correctly supported?

Thanks for all the responses guys Had someone out today to quote and the work can be fixed, approx. 2/3 days to complete. My final concern would be that the builder under specced the steel. The large steels should be 203 X 133 X 30. I know they are 203 X 133 as I have measured, does anyone know...
11. ### is RSJ correctly supported?

Thanks for all the advice. Loud alarms bells have been ringing for some time. I checked with SE and they have confirmed no revised calcs have been issued. Obviously builder was trying to fob me off. BC is being done by a private company, expect it's someone he is familiar with. He also mentioned...
12. ### is RSJ correctly supported?

Hi Woody, Thanks for the quick reply. Any chance you would know if it is normal that Building Control want to see the work fully plastered? The builder responded by saying they have confirmed works through photos.
13. ### is RSJ correctly supported?

Hi Woody, It doesn't. The builder has told me not to worry as he's clarified the way the steel has been installed with the engineer. Originally the column is specified to be 340x340. The builder also said he's informed BC of the way it has been installed. But that they will only come out to...
14. ### is RSJ correctly supported?

Guys, I have a builder in doing some work for me. He put up an RSJ where there was previously a load bearing wall. Can you comment on the photos? I'm not 100% confident in what's been done. New RSJ spans 5 metres and also supports smaller pre-existing RSJ. Areas of concern, - Pad stone 80mm...