Thank you kootk
Had a look at the link and some of the other threads here on vaulted ceilings.
The issue I guess is that with this being a terrace house, side walls are shared by neighbours so looking for options to minimise thrust and therefore movement of the walls.
It's an existing roof...
Looking at a 3 storey terrace house with a hipped stick roof. Rafters are 4x2 at 400 crs with 4x2 collars. Roof on plan is 5.5m wide (front) and 7.7m long (sides). Perimeter walls are full brick 225mm.
Client wants rafter ties removed to form a vaulted ceiling with open plan.
Ridge board in...
youngstructural
Many thanks for that - that was very useful and a lot of what I was looking for. Anything else you might have would be greatly appreciated as it seems I ll be running into these old structures quite a bit. If not, thanks again, that was great.
csd72
Thanks - I looked into...
We are checking an old building 4 storey building of brick/steel frame construction. Columns internally appear to be cast iron circular hollow sections. Any pointers on technical info/properties of cast iron columns? Building is in UK but any useful info on cast iron columns would be a starter.
Bracing beam's other end should obviously be looked at as well - i think this is implied in all posts made. For example, similar detail at other end, sitting on a parallel "braced" beam wouldnt be bracing either of the two beams - or to be more correct, it would provide twist restraint but not...
You might want to try Dikema and Chabot - a big dutch supplier, rolling european shapes- used them quite a few years back and they were reliable and competitive - but as I say this was several years ago. Google should get you contact details.
Looking at the Corus "Blue Book" (available by the way from their website) you are correct that these particular sections are not in BS4. This isnt a problem in itself as obviously the sections can be used as normal in accordance with BS5950. They do however seem to feature in Corus list "for...
I have not found the British Sections limiting in their options - unless I am missing something the difference in wt between W21x44(at 65.4 kg/m) and UB533x165x66 kg/m and W24x55 ( 81.8 KG/m) and UB 610x178x82 kg/m is insignificant.
As far as Middle East jobs, we did in quite a few cases...
You asked whether you can load W shape on bottom flange - the answer is yes. For your joists, they may either bear directly on bottom flange or you may pack and bolt timber in web and hang joists with joist hangers for instance. In the latter case the joists may even then be lower than the...
I am not sure what you mean by volunteering to design - do you mean being in Africa yourself or designing from overseas?
I have spent several years in Africa on design and construction projects and could help with any specific questions/help you need. On bigger projects, designs were to normal...
If you are working on load sharing relative to their EI, as haynewp also said, then its simple to calculate the load taken by the plates. Bolts drilled through the plates will have to be provided throughout the span to transfer the proportion of load to the plates, which since you already have...
Myerges,
In terms of looking at it as sharing the load through bearing transfer , no I dont think you are interpreting it correctly. The thickness of the plate is therefore not the factor as to how much of the load the plate will take. Transfer of load to the plate is via bolting of the...
Flitch beams are commonly assessed based on deflection compatibility. Load taken by timber/plate is based on their stiffness. In calculating load taken by steel plate its best to use the minimum timber E for maximum load on plate. Conversely, timber is checked based on its mean E value. You need...
With side plates stopping short of supports I see no difference between this and the flitch beam analogy. Its usual for a flitch beam to have the steel plate a little narrower than the timber beam anyway, so the end reaction is carried by the timber alone, as would be in your case. Bolts...
pappyirl - just rests on padstone - I dont know what span we are talking about in the case here but assuming a normal domestic opening this is no more than just a longer lintel.
