Dear Ingenuity and hokie66,
In our case the fire was caused due to some short-circuit and quickly spread throughout the open area of Mall and then flames were escaping from some dome areas (covered with steel structure). We did lot of core testing as well as carbonation testing. Carbonation...
Dear All,
I would like to get your expert opinion regarding effects of fire on post-tensioned (PT) slab system supported by PT beams. Recently one of the newly malls in middle east region got fire (During finishing phase of project) and the fire badly affected the PT slab as well as the...
Interesting and my fav topic. One of my friend was doing MS in electrical engineering with thesis on design of neural networks and artificial intelligence (AI). His works were quite interesting and there has been lot of work done in this field though maybe trillionth of a complexity of a child...
There is one thing I am gonna try. Mostly for surface pasted CFRP plates the additional area provided by CFRP (thickness multiplied by width) is taken as sort of additional steel area (with different E-value). So i will try to analyze normal beam without any external strengthening and then using...
Hi SethGuthrie,
Thanks for response. I have done some modelling and simulation using ANSYS (advanced finite element package) but it is quite laborious and complicated task to get reasonable results from such an advanced and complex package. Also with such FEM package you concentrate mostly on...
Hello Everybody,
I have a question related to strengthening design of mostly concrete members. For example if we have a beam or column or slab having deficient strength and we want to reinforce it using FRP wrapping / plates etc or by steel plate bonding or by increasing the section size, then...
Thank you very much PSEPK for your valuable input especially the names of books. I have gone through ACI 440.2R-08 and the example given there is excellent though skips some steps. I am well versed in STAAD and ETABS and can import drawings into these softwares for checking of structural...
Hi Ingenuity,
Thanks for your input. I have the code ACI 440.2R-08 with me. My question is bit more basic that what should be my exact starting point in terms of data input. I mean I have a structure in front of me with loading (new loading) and some beam sizes given. I need the loading of...
Hello Everybody,
I am having a project where I need to strengthen the RCC beams which are taking new loading from planted columns as clearly visible (in yellow) in attached image. As this will be my first strengthening "design" project so my questions are as follows:
1. Should I request for...
Thank you all guys. I am really enlightened about the PT repair works now and will surely put all this to practical use.
One query however still remains regarding the epoxy strengthening of BONDED systems. Above pictures and references mostly refer to UNBONDED systems but here in middle east...
Hi Ingenuity,
Thanks for quick reply. Our system is BONDED type with cementitious grouting. We are based in middle east region so I am also not sure which standards govern. However any reference would be highly appreciable.
Hello Everybody,
I am looking for a code or reference document or any technical approval from any renowned body regarding procedure for cutting of PT tendons. There are many situations in which due to certain changes in building layout (mostly related to MEP / HVAC services) we need to do coring...
Thank you very much ThaiDavid and dig1.
In our case we have provided some room for movement via slots in bolted connection of saddle and the supporting structure so YES there is allowance of movement in ONE plane (longer side of vessel). And the sliding forces (frictional forces in analysis...
Dear All,
I am having to design an oil & gas platform structure supporting a vessel equipment. As per the loading table and requirements given by the consultant, we need to input the "Temperature loads".
I was wondering how to do an input for temperature loads? I haven't applied this loading...
Ok I have no idea about other FE packages. I can suggest one thing. Make a master MACRO workbook in Excel. You need to be expert in VBA to do this. Then related that workbook to anything you like i.e. it can be macros of ANSYS or any other FE software if it supports some sort of interface with...
Its just a view setting i believe what you are referring to?
For viewing fill areas go to PlotCtrls then to DEVICE Options and then turn the vector mode OFF.
Hi ateeroyal,
ANSYS already has beautiful automation interface using MACROS written in APDL and also can be interfaced to other applications using Python or VBA scripts. What kind of automation you are looking for? I am not an FE expert so far (though learning a lot) but i have had good...
Definitely a trivial question but let me put it more intuitively. Normal RCC is when you take the load passively i.e. the load bearing members (columns, beams and slabs) only play their role when load is being applied on them (surely besides dead load). Post tensioned concrete is active load...
Hi Ingenuity,
I'm based in middle east (in UAE to be precise) and here we do both kinds of PT i.e. bonded as well as unbonded. We are dealing with buildings and bridges both but as of now we are having like 90% projects of buildings. I am more interested in analysis and design of External PT. I...
Hi everybody,
I am new to PT and my core competency is in the repair and strengthening of RCC structures using various techniques including but not limited to increase of area as well as external FRP bonding. I would like to know what are the courses, manuals, studies etc I need to develop a...
