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Thanks all The image below will hopefully clear a few items up. I am interersted in the spread from the existing retaining structure highlighted yellow to the new basement retaining structure. this is the permantnt solution but also for the temporary works (which is a more complicated hing...

Thanks GC bu till be perfectly honest i dont quite follow that above. I have always used and assumed 45 degrres. But I am lead to believe that is conservative. For my current problem I want to change this angle of influence to avoid a nearby property and being in bed rock I feel like this is...

I took Craig's soil mechanics from propping the door! This is more for general understanding. The SI states dense sand (probably weathered bedrock) For future reference I'm trying to understand the behavious of different ground types.

Hi all. I have a question that has no doubt been covered on this forum but I can’t find a solution. Does tabulated data exist covering the angle of dispersion through different soil types? I am to believe (depending on what is being checked, i.e settlement etc) that the angle is 30 degrees to...

Hi all. I have a question that has no doubt been covered on this forum but I can’t find a solution. Does tabulated data exist covering the angle of dispersion through different soil types? I am to believe (depending on what is being checked, i.e settlement etc) that the angle is 30 degrees...

Human909. This is a considerable amount of effort and is very useful. It's monday morning here in the UK, im going to have a cup of coffee and digest all of the above discussion. A quick reply regarding the 2 bolt connection. We sometimes use a more robust detail that would achieve a moment...

ha . understood adn is appreciated! out of interest what are you using?

The udnerstanding of LTB isnt an issue. Its how this theory is applied in the real world (with examples such as the above) I would be interested in the following results. Length changes. say 4m, 6m . 8m. loading. say a lodd of euqual 10 kN/m on each beam and an unblanced loading of say 10...

Thanks human909. image attached of twin beam. I agree that it will be retrained (and that also doent take into account anthing else coming into the beams - joists or any precast units) I thought guidance might have been covered in text to avoid a bbuckling analysis...

Edit- after reading other posts it looks like you cant simply rely on these beams being restrained just becasue they are connected. but is there a way of calculating the benefit? Note- i work on domestic projects with beams spanning less than 4 to 5m with occasional longer beams in there...

Hi all- I have a twin beam scenario supporting blockwork and brickwork above. A typical detail is to connect these twin beams with UC offcuts, welded to one beam and bolted to the other. If these are spacaed at say 1m cc. does that reduce the effective length to 1m? or will they assit with...