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#65596 - 02/17/16 01:45 AM Supported roof with Rafter and girder ring only(no column)
prasath Offline
Member

Registered: 08/15/13
Posts: 6
Loc: uae
Hi,

Im designing 40 m Dia Tank,
1. Does TANK have option to design Supported roof with only rafters and girder ring (means no columns ).

Note.:
Normally manual design primary rafter and secondary rafter with girder ring

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#68643 - 03/22/17 06:22 AM Re: Supported roof with Rafter and girder ring only(no column) [Re: prasath]
LINUS Offline
Member

Registered: 04/07/08
Posts: 23
Loc: INDIA
Such roofs are better designed by modelling in Staad. Manual may be very laborious.

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#68660 - 03/22/17 08:29 PM Re: Supported roof with Rafter and girder ring only(no column) [Re: prasath]
Richard Ay Offline
Member

Registered: 12/13/99
Posts: 6226
Loc: Houston, Texas, USA
If there are no columns, TANK will assume there are no girders. The rafters will run from the tank shell to the center of the roof. The selection for this roof type is: "rafter supported roof".
_________________________
Regards,
Richard Ay - Consultant

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