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...

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...

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...

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...

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...

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...

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...

Hi all, I’ve recently had some major renovation on our house with a number of walls removed and RSJs installed on the lower ground floor. The builders have now gone and building control signed off the work. There’s still a lot to be done, however. I need to fix some rotten joists by the front...

As per title really - is it ok to hang joists on a joist which is already supported at either end on joist hangers? I'm looking to get rid of the ugly timbers which are below ceiling level under a flat roof which is part of an extension from many years ago (1980's). It's a bungalow and the...

Hi, Just after some thoughts on Rsj sizes for a flat garage roof Garage is new built single skin 6.5m x 6.5m and its got 2 pillars on the left wall and 2 pillars on the right wall evenly spaced out @ 1/3rd & 2/3rds of the way, So will need 2 Rsj's to support 6"x2" joists (400 centers) with 18mm...

Hi - I am feeling a bit lost and would love some advice! I had French doors put in place of a window on my first floor about 2 years ago. There had previously been a window of this size in place as the brickwork was different (although a much smaller one was in place when I moved in) so the...

Hi, I’m installing a 4m 152*152 23 rsj in a double skinned internal wall with no cavity. Both sides internal as it used to separate the garage. This is a bungalow so only has a triangle of brick above it which supports purlin. Because of existing lintel when I put the padstones in the steel...

Hi, I understand the need for calculations but also understand the difficulties when the lintel is cast in place? I would like to remove the single brick partition to the left. This is the old pantry. The lintle is holding the side of the house (3 bed semi detached) the pantry is part of a flat...

Very soon we are intending on creating an open plan kitchen/diner by holding up the gable end of the house using "picture frame" type steels. The calculations mention considering to use scaffolding/racking shores? Are these necessary? We were intending on using plenty of Strongboy XLs (on a...

Hi I have a single storey extension going in with a 4m long bifold to the garden, it is likely that due to this span we would be installing this steel with welded plate as you’ve shown in your detail drawing. My question is: Where this steel is supported at either side of the bifold, will the...

Ok, guys here is quite a specific question and know I maybe should get an engineer to calculate my steel, however, thought would try as there is there some great help & info available here. What we are trying to achieve is to take most of the back of the house, to extend our kitchen. Looking...

Hey, We are investigating the possibility of removing 3 internal walls (sections of walls) to make 3 small rooms into one large room. One 6.5 meters, Holding up floor joists and stud walls One 3.5 meters, No joists but a “vertical beam” that is under a roof purlin One 1.5 meters, Holding up a...

Hi, I am having an extension and have 2 parallel rsj ( one for inner wall and one for outer wall ) with a 100 cm gap in between. I want to leave the beams exposed as I have designed the kitchen around this idea. What can I use in-between the beams so when I paint them they look like one beam...

Recently had an rsj installed as dinning wall has been removed. Rsj sits on internal skin on a pass time, but only has 80mm bearing on each side? Will this be okay?? Thanks in advance

Hi All We are in the process of self building a single storey extension on the rear of our property. We are aware we need a steel ridge beam for our gable roof and have had calcs agreed by building control for this. 152x89x16 at 4.2m being deemed sufficient. Situated approx 750mm Below each...