Demolition of Fire Damaged Structure
Demolition of Fire Damaged Structure
(OP)
Are there any guidelines for demolition a steel frame structure that has been damaged by fire. The second floor girders and columns are sagging/bent and need to be removed. The first floor girders and coulmns are fine. All wood floor beams are damaged and are to be removed.
The client does not know what he will build on the first floor yet. To remove the second floor column, I am thinking ahead and proposing that they cut them off at least four (4) feet from the fist floor level for possible splicing in the future. Any thoughts?
Thanks,
The client does not know what he will build on the first floor yet. To remove the second floor column, I am thinking ahead and proposing that they cut them off at least four (4) feet from the fist floor level for possible splicing in the future. Any thoughts?
Thanks,






RE: Demolition of Fire Damaged Structure
If the columns were painted and the paint is not blistered, you're probably OK. If blistering of the paint occurred, check hardness in the field to make sure you didn't get quenching when the fire was doused.
If the columns are not painted, I would check the hardness in a vertical traverse to check the consistency.
RE: Demolition of Fire Damaged Structure
RE: Demolition of Fire Damaged Structure
Other than corrosion issues, if the steel is that old, there's a good chance that it has not been affected if no visual damage bearing in mind that it was likely designed for fy of maybe 30ksi or less; it is also possible to remove samples and have them tested.
RE: Demolition of Fire Damaged Structure
RE: Demolition of Fire Damaged Structure
RE: Demolition of Fire Damaged Structure