Morning All!
I am going to be dealing with a fairly large building soon incorporating stone & lime walls approx .6m thick. The building has been exposed to the elements and while being renovated is having three new sound proofed beam & block floors added (floors were timber previously). Ground...
Morning Everyone!
I am shortly going to be designing up 2 small circular hot tubs in reinforced concrete.
The hot tubs are located very close to each other resulting in a thin (approx 200mm) walled concrete shell. They are outdoors & buried to ground level. I am concerned with the cracking...
Hi Everyone,
I am going to be designing up an architectural sign (about 6 feet high) on the edge of a coastal cliff shortly. There is a narrow continuous void between the 2 flat wafers of steel on either face. Obviously wind will be an issue.
I was wondering - are there any lattice type /...
Hi Guys,
I'm designing up a steel frame encompassing 1 exterior face of a house extension (from foundation to rafters).
The house is timberframe.
The steel frame has a balcony connected to it.
I have proved the structure is fine for racking. The steel frame is also fine for the moment load...
nice, just calced = 10x the racking of typical shear panels of the same dimensions! (check the .41m width panel)
They are not advertised in the UK though, does anyone know of a supplier of equivalent strength timber prefab "shear panels" in the UK? It seems bizarre that they are not widely...
Morning Everyone,
After some time designing timber frame houses, I have noticed that there does not seem to be many alternative options on the market for lateral bracing to aid wind racking. Ofcourse, the clients would prefer anything less costly than steel racking frames to support the more...
RARSWC -
I did a bit of research online and heard that the creep problem occurs with formaldehyde based epoxy adhesives.
I'm not sure the exact adhesive composition for the more common laminate / wood fibre beams on the market
You could always ask for a RAWL design guide, handy for reference:
http://www.rawlplug.co.uk/index.php?option=com_content&task=view&id=4&Itemid=4#europe
Does anyone know if there is any recognised insulation method for insulating steel against condensation which extends out of a structure and cannot be split with a korolath plate, for example:
a steel frame swimming pool where humidity is high inside and the overhead roof beams extend out past...
I reckon the problem might be exacerbated if the beam was called off as a joist trimmer, due to the addition of fatigue from continual loading-unloading.
I was just wondering, given the recent incident at the Boston tunnel involving creep failure of epoxy in tensile connections (http://www.ntsb.gov/Publictn/2007/HAR-07-02.htm), are Parallam's certified or tested against creep failure?
Given that Parallam's are more reliant on the long term...
I previously designed up some GLULAM purlins for a long, 45 degree pitch, domestic roof of a timber frame house. Standard C24 solid timber will not work for the loads (fails on bending), is there some form of custom steel knee bracing available to substantially increase the timber capacity...
Interesting comments, I got round the problem in the end by a thin plate bending formula from prex's suggestion. Luckily the membrane and bending stresses weren't too huge on the bottom edge lip so the weld should hold.
I'm resurrecting a FE thin plate analysis code (from PhD) at the moment for...
is there any approximation formula I can quote for gauging the (10 times load) reaction forces due to the membrane action? I dont want to have to resort to a full FE thin plate analysis, as that will add another week to the job.
