I am working on a project were we have to make a new connection to a pipe 16.5 feet below ground level. The pipe is beside a river with the underlying ground consisting of a free draining gravel.
The plan is to sink a shaft 15ft by 15 ft on plan using sheet piles and excavate down to the pipe...
Can anybody tell me if it is still acceptable to use British Standards that have been withdrawn and been superseded by Euro Codes.
Does anybody know for example the transition period from from BS8110 to EC2 for concrete? Must EC2 be used not for all new concrete structures?
I am working on a project using a secant pile wall as a temporary support to allow the construction of an underground tank built below the water table. The contractor has left some timber formwork trapped between the secant pile wall and the finished poured concrete wall. I have some concern...
dhengr.......thanks for your comment. The concept of tensioning the arch member is interesting. The attachment you can't open is of a very standard lattice truss design that I put forward to the architect.
In terms of there being a "secret" there is none. I am also not really looking for...
Pat
The roof purlins and insulated cladding we are generally expected to specify is roughly around half the load of the wind uplift load. I can't even think of something practical that a light weight roof could be weighted down with. Ballast wouldn't be an option on this roof due to the fact...
Here's a lattice truss option attached. Top and bottom chord 120x8mm (5x1/3") equal angle with the two middle members of the top chord slightly heavier.
JLNJ.....I suppose the bottom chord could be prestressed to ensure it does not go into tension but it still has no compression capacity so I...
In terms of letting the bottom chord buckle leaving the top chord to fend for itself in a heavy wind is something I looked at. It doesn't work. For gravity loads using a steel 254x146x31UB i.e. a light 10"x6" I beam with a 36mm (1.4 inch)tie rod is very effiecient structurallly. In the uplift...
I have been looking at a roof truss for the past few hours and I would like to get a few opinions.
The truss is a bow string arch which is popular for school halls where I work, Ireland. There are many example of trusses where I live that use only steel rods for the bottom chord. Some of the...
Lion06......In the scenario I described, the roof lifting off in the wind, the consulting engineer (or EOR in the US) had checked the subcontractor design and drawings. The problem was the check he carried out was only to ensure the contrator design was in general conformance with the design...
dik........thanks for your response. It is similar to what we have in our specification. What you have there explicitly spells out very clearly the contractors responsibility. There are some good notes in it that I may add to our spec.
I had a conversation today with a very senior engineer...
Hi Brad, I'm learning a lot about how some PEMB's suppliers operate! They are very much suiting themselves on this job.
Unfortunately the client sees it that the PEMB supplier and the engineer should get the building right and as such are not that concerned about excuses for errors. Their...
Thanks for the reference JAE. I had a brief look throught the document and the clause below covers drawing approvals. It would seem to me from reading this that the checking engineer is taking responsiblity for everything on the the fabricators drawings except for cutting dimensions and...
Thanks for the replies guys. It seems to me that what "Reviewed/Approved with Comments" / "General Conformance Review" actually means is open to some interpretation and is a bit of a grey area. I would say that what goes for common practice in the industry in respect to responsibility for...
OHIOMatt/ToadJones
On the project I am working on there is no Architect as the buildings are fairly basic sheds. The buildings range up to 300ft in length with 100ft span portal frames. We the engineers set out the building dimensionally so an architect was not deemed to be required.
Do I...
ToadJones - the drawings I am referring are steel fabrication shop drawimgs.
What does it mean in you office when you stamp drawimgs "Reviewed with Comments"?
I am working on an oversea project in Africa that includes a number of Pre-Engineered Metal Buildings being fabricated by a steel building supplier based in Africa. The fabricator is using an American PEMB system from one of the US's leading PEMB companies. Someone on EngTips previously...
I have to check the design of an engineering who is analysing his structures on Staad Pro. I do not own Staad Pro but I do own Robot Structural Analysis which is supposed to be capable of converting and opening Staad Pro files.
I am opening the files in Robot as Staad Pro files and the...
BAretired
Most exam candidates describe the first 15 minutes of the exam as blind panic.
It is often said that if a candidate cannot see a question that they know how to answer very quickly they are already in trouble.
There are always a few candidates who walk out of the exam within the...
The IStructE Chartership Exam has always been described as the toughest construction industry exam in the world.
I don't know for sure if that is true but it is a very tough exam. When I passed it, luckily first try, my biggest feeling was relief.........relief that I would never have to to sit...
Thanks for the responses which were very helpful and apologies for my absense on my own thread.
I have carried out some calculations and this is what I am now thinking:
1) As pointed out by BAretired using the deformed shape to determine the forces is possibly the only way to get meaningful...
