rsj

  1. O

    Placing a RSJ on a 3.6N AERATED CONCRETE BLOCK (Thermalite)

    Hi, I am taking a corner out of the kitchen on the ground floor which will be supported by a 'T' RSJ section. The largest RSJ (203 x 203 x52) has a span of 5m. One end will be on the original 9inch brick pier and the other will be on a new 300mm wall (inner leaf - 100mm). The builder has built...
  2. D

    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...
  3. T

    Loft conversion questions

    Hello, sorry if this isn’t the right place, it’s my first time posting. I have a couple of question, both things I’m a little uneasy about. I have a builder working on a loft conversion and it has a large steal going across the ridge, my concern is it looks like that steal is only supported on...
  4. H

    Cracking in brickwork where extension meets building, SUBSIDENCE??

    Hi, I am a new member here, in the process of buying a 3 bed 2 storey 1970's house and have noticed cracking in the masonry where the rear (single storey) extension meets the building. The cracks are stepped and go through both the bricks and the mortar. The extension itself is around 15 years...
  5. V

    Simple pinned connection or moment resisting?

    Hi everyone, sorry for the second post in one day. I am currently looking to install an RSJ and steel column in my house in place of a load bearing wall. My question is in regards to how structural engineers normally model the connections. See diagram below: Screenshot 2021-03-25 At 14.42.00...
  6. V

    Posts require to at lateral stability to single skin wall?

    Hi all, I am looking to open up my downstairs with a few RSJs and columns, see images below: Existing 3D by Vennegoor posted 25 Mar 2021 at 2:18 PMProposed 3D by Vennegoor posted 25 Mar 2021 at 2:18 PMExisting Plan by Vennegoor posted 25 Mar 2021 at 2:18 PMProposed Plan by Vennegoor posted 25...
  7. three-tees

    Understanding purpose of structural support of floor

    Hi, I'm planning to utilise my basement space (previously a garage) however I'm in need of creating some additional ceiling height - especially where currently positioned there is an RSJ. In summary, I want to remove it, and replace with wood in a similar arrangement to the rest of the house...
  8. C

    Rsj – u-beam sizes in full renovation

    Hi all, im new to this site so bare with me.. im about to renovate a 1920/30’s semi-detached property, its a big job for me alone, it needs everything, from new concrete ground floors, new joists to 1st & 2nd floor, also partially new roof for a loft conversion.. ive already done the house next...
  9. L

    Cracks in walls - serious or not

    Hi, 3 years ago we had a 2 storey side / single storey rear extension added to our semi-detached house. This involved the removal of the "old" rear wall with RSJ installation. Since it was done we've had vertical cracks near the "join" in the rear extension, not deep not wide but definitely...
  10. M

    Can RSJ beams be placed on top of each other

    I have recently had RSJ's installed to prop up chimney stacks as the chimney breasts underneath were removed. The BC were informed and a structural engineer engaged. I provided the calculation and plans to the builder. I noticed that the fabricator had predrilled holes in the beams supplied ...
  11. H

    Do we have an RSJ?

    We live in a RedRow property built 2010 -Broadway Design- and we are removing the patio doors at the rear of the house. Does anyone have any experience of the homes to advise whether we have an RSJ? I was told by a chap who worked on our roof he was 100% certain a home built in 2010 would have...
  12. Rgee184

    How would you support...

    We are in the early stages of deciding what we want to get from an extension on the rear of our 1950s semi. The existing house has a kitchen and dining room across the back of the house divided by a supporting wall. I have found it difficult to find much info on the topic although I’ve seen...
  13. oursurveysaid

    Fireboarding RSJ at floor level

    My wonderful builder left me with this mess after not quite finishing my extension. This is the bathroom above the kitchen where an RSJ ended up encroaching into the room at floor level. I want to tackle the puzzle of fireboarding it myself, but am not quite sure on what needs to be done to...
  14. G

    Rsj

    Hi Just a quick one here before I crack on tommorow.Hopefully Builder has installed rsj to ext wall no cavity very small cavity, 1930s house I was planning to fix wall plate just above the lintel and start my roof untill he returns Monday with pad stones etc...he has said to fill above the...
  15. Stiart

    RSJ into single skin wall

    Hi, couldnt find the answer to this anywhere...please dont answer 'structural engineer' since i can work that one out myself but before i get to (do that i want to know if its even feasible for my planning and hope someone can help since ive been scoring the internet for an hour and i find...
  16. G

    Rsj

    Morning all Currently building single storey extension warm roof construction.All walls up currently have all materials onsite for roof,need to get water tight asap.. I have taken plasterboard away to reveal joist and drilled through wall has a gauge,temporary inserted steel rods for 195...
  17. leaf17

    Large cracks appeared during RSJs installation

    Hi all, Hoping for some advice on some concerningly large cracks that have appeared during our extension build. They appeared during the couple of days that the acrows were in place to support the back wall of the house and another smaller structural wall that's required a short steel. The...
  18. C

    padstone less than 150mm for over 3m lintel

    As you can see the pad stone bearing (in yellow box) for lintel is 115mm instead of the minimal 150mm required. However, this is structural engineer's calculation, building inspector is happy with it. So maybe the rule isn't quite "150mm" length of the bearing but the actual area, maybe 15,000...
  19. JPBlackie

    Moving an RSJ 660kg

    I need to move a 6.6 meter RSJ @ 97Kg per meter. For clarity - I cannot use a crane due to overhead wires, I know that I can list with genie lifts latter My plan is to move it from my uneven drive using 3-inch fence posts using a hand winch (rated at 4 ton) to pull it onto the block and beam...
  20. D

    Electrical cables between RSJ and floorboards?!

    I’ve had some major renovation on our house with large RSJs being installed, among other things. The builders’ left and I’m now getting on with the improvements/repairs I can make myself. One of the jobs is replacing the floorboards they’d ‘fixed’ using smaller metric boards with the correct...
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