Re: [MW:22092] Re: Buckling on floating roof

Dear Mr.Neethipathi,
Thanks much for your responses. the waviness are localised in the 72
mtr. dia deck in many spots ( having length- 200 mm, width 150 mm).
the upper side of the wave is maximum of 47 mm & lower side of the
wave is 88mm with respect to the horizontal. this is a single deck
design. I have referred Appendix C of 650 but nothing seen about
waviness, buckling of Decks.
Thanks in advance,
Kumar.
On 10/11/14, G Neethipathi <neethipathi@gmail.com> wrote:
> Dear Mr. Kumar,
>
> What is the area and depth of buckling ? Minimum and Maximum measured??
>
> Your tank is with Single deck or double deck Floating roof??
> refer API-650,Annes-C for guidance.
> r
>
> *Thanks/regards,*
> *Neethipathi-G*
>
> *Contact numbers:*
> *+ 974- 66170687 (Qatar)*
> *+ 91- 8344044517 (India)*
>
> On Sat, Oct 11, 2014 at 11:25 AM, Kumar <sk7920541@gmail.com> wrote:
>
>> Hai,
>> Pls. note the material of construction is A 283 Gr.C. (also attaching
>> 2 more snaps for reference).
>> Regards,
>> Kumar
>> On 10/11/14, Kumar <sk7920541@gmail.com> wrote:
>> > Dear All,
>> > For a storage tank as per API 650 construction (dia- 72 mtr, height-
>> > 22 mtr), the external floating roof have found with some buckling &
>> > waviness which is more noticable after the hydrotest. since the roof
>> > is resting on the fixed legs in the bottom plate, this might be due to
>> > the settlement of foundation during hydrotest. anyhow, sub-con is
>> > declining to rectify this as there is no criteria in 650 for floating
>> > roof. Kindly share your views(few snaps attached)
>> > Regards,
>> > Kumar.
>> >
>>
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