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For detailed description consult J. E. Bowles "Foundation Analysis and Design" page 501. There, you will find a table for the range of K values. Use the average value for the specific soil condition applicable to you. Thanks for appreciation.

dawn836, Your problem is different. fleisher misunderstood you. For your particular case, you should keep in mind, the way, value of "K" is obtained. It is obtained by plate load test (I rely on plate load test for larger jobs). Since the extent of PC is very finite, we can not consider it as a...

3dboy Follow the link below and submit your request. http://www.snerdi.com.cn/en-introduction.htm Regards,

KarIT I would suggest you to modify the connection at guy wire support. To allow elongation, you can make a slot so that guy wire can adjust its length by sliding in the slot. During normal operation, when the temp. will be high, the guy support will shift closer to the chimney. But in shutdown...

ThomasH, Now your question is more clear. Your concern is not lifting device design. You are concerned with the structure lifted. Generally building are not designed for such cases. But if client wants such design, it can be done. One can define lifting points and design lifting lugs. Then he...

Thomas, For lifting device, you can follow ASME B30.20. Generally for lifting devices FOS is taken as 3. What do you mean by short very shot duration. Is it some type of Blast Load etc. If this is the case, the situation is different. Otherwise follow the recommended factors. See some text...

SAP2000 gives more reliable results.

I suggest you to get ASCE Report "Design of Anchor Bolts for Petrochemical Facilities". It suggests the way dowel bars are considered in design. Because Dowel bars are in the failure plane of concrete. ACI 318-02 does not address this issue.

Something more for your eye opening, http://www.guardian.co.uk/comment/story/0,3604,1036571,00.html

Thanks Bbird for your response to my posting. I am a Pakistani and working in Osama's COUNTRY. I do agree with you that it is difficult to find a really knowledgeable structural engineer over here. In my opinion it is a technical forum and our discussion should be within the boundries defined by...

Please read this as well http://www.sumeria.net/politics/bushknew/ghostriders2.html

Noopur, My experience is that there are bugs in element design. It seems that the steel ratio is minimum. Send me your input data file. Thanks,

Hi Guys, I have a very important rule of thumb to design a foundation for vibrating machines. i.e. Weight of footing = 3 to 5 times weight of the machine.

tom24, I advice you to consult an engineer. The problem is not so simple.

Ajuk, please send me the extract at msajjadh58@hotmail.com. Thanks for your posting.

Only min. reinforcement will not be sufficient. Pay attention to amount of heat of hydration, generated in the early age of concrete. This phenomenon is very important. As the heat generated is max. when the strength of concrete is min. Follow ACI 207 guide lines.

ALEXSTRUC, I suggest you to forward all these comments to your ex-boss. I would be a good lesson for them.

I suggest you to follow ASCE 7-95. You will find all your answers there.

Please refer ASCE report "Design of Blast Resistant Buildings in Petrochemical Facilities"

Thanks Butelja - But these manuals are not available. I have only ASCE Task Committee report "Design Of Blast Resistant Buildings in Petrochemical Facilities". In this report they are following Single Degree of Freedom (SOF)system. There is an example given in this report. Every...