beam

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...

I’m building a rear extension on my bungalow. The block and beam floor has been designed so that the beams run parallel with the rear facing wall. So i understand that usually if they were running perpendicular, the beams would key into the existing wall and be supported by the load bearing...

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...

Hi Everyone I would like to remove a wall on the first floor. The house is a typical 1930s terraced house. Attached is the wall in question. The wall is a brick wall, but I have checked the loft and the joists are parallel to the wall except one joist that sits on it. However on top of the...

Hi - My builder is in the process of finishing off my 8m by 9m outbuilding and he’s installed the roof joists as attached. Does this look right? Any advise or thoughts are appreciated. TIA.

After being let down by several structural engineers wondering if anyone on here will be able to help me. I purchased a new house 4 months ago and the garage is my next project. Water has been getting in for several years and it has rotted the existing suspended floor rendering it useless...

Hi I am doing an extension and had a trial hole dug for the foundations which was to 1.4m (deep due to trying to find good ground - point 1 below). The water table was oily/contaminated and ground is obviously made up ground. My council building inspector came out and inspected the hole and...

I have just installed the following two beams for my loft conversion. 5.1m 203x203x46kg on 100x150x500mm pad stones. Unfortunately these are sticking through the roof slope. I have been told by an architect these can be cut at 45 degrees halfway up the beam without compromising the structural...

Our builder is on site for our loft conversion. He has laid a heavy long beam but one support is on the edge of the brick wall of the garden elevation and the metal spreader under the beam extends to the top of our first floor small bathroom window. The builder reckons its okay but I am unsure -...

Hi I've got some 20 year old wood beams in my roof which support the existing ceiling. They are still in a good condition. I'm wanting to make a loft conversion and was thinking about further strengthening the beams by painting them with something but not sure whether to use a varnish or enamel...

Well, more like exposed bottom rails of roof trusses, with plasterboard recessed between for that mock Tudor effect. An extension has added new beams which I think will look better without paint, or maybe a very light stain (new ceiling plasterwork white emulsioned). However, the original...

Hi, I'm looking at some calculations for a beam. Is it correct that celotex is listed as 0.25kn/m2 ? Only unsure as it is listing plasterboard and skim at only 0.12kn/m2 and 25mm flooring at 0.13kn/m2 Surely it's not heavier than these two things? Thanks

Hi all, My ground floor is of beam and block construction with a 150mm or so void underneath. I initially thought it had no airbricks whatsoever although I found out they had simply been covered / blocked by garden soil, patio slabs, etc. I've read that the void needs to be ventilated and my...

I have just started my own DIY loft conversion. I have already obtained planning permission and building regs permission. I removed all of the rubbish from the loft and then had scaffolding installed. The structural engineer drawing specifies three loft pieces of PFC steel beams which are 4.9M...

Hi all, not sure if I'm posting this in the right category... I want to add a small chandelier type light fitting to hang in the centre of the room. There has never been a light fitting there so there are no cables existing. It is a very old house with exposed wooden structural beams and...

I thought that RSJs came with pre-drilled holes, but on our RSJ there appear to be 8 holes drilled instead of the 4 expected. Is this right? And should there be any documents/notes/calculations to back it up? 2016-08-27 19.18.18 by r_c posted 27 Aug 2016 at 8:04 PM

We are planning on converting our garage into a master suite. The garage currently has a concrete slab that has a large crack/split. The rest of the house is pier and beam. We'd like to create a raised floor in the garage so that its at the same level as the rest of the house. Do we need to...

We had a pitched roof kitchen/conservatory extension done 11 years ago, single storey, 15 degree pitch, and we are now considering taking out the dividing wall between kitchen and conservatory, and removing the ceiling in the kitchen to give a more open feel. We paid for the services of a...

We're doing a self build which is actually a conversion of a current industrial building. It has a large flat roof which is supported by 3 x 11m long i-beams, approx 450mm x 300mm section, and they need to be raised by a few feet up to a height of around 7.5m. My question is, for a beam this...

Hi Everyone, I am putting an extension on my house (3 bed Semi) and we are opening up the back of the house to make it open plan. The steel calculations have come back and I have to put in a 8 m 305 x 305 118 Universal column which is 1 tonne in weight. My problem is the restricted access I...