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Fixed Roof Rafters

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TerryThompson

TerryThompson

Petroleum
Joined
Feb 4, 2003
Messages
8
Location
CA
For large diameter tanks with intermediate rafters, should they be fixed at the girder or allowed to move?
 
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It can be done either way. Settlement in the columns can load roof rafters in compression if they are fixed. Stability of the structure can come into question if nothing is fixed up there.
 
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For the outer row , the rafter clips shall be welded to tank wall. Other supports (on the girders) can be sliding support for cone roofs..
 
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