remove an existing column in a building. Assume that the column was placed for a
ID: 1919988 • Letter: R
Question
remove an existing column in a building. Assume that the column was placed for architectural reasons and does not connect to a top and bottom column.
The removal process is complicated and can have severe consequences on the building performance.
write steps and refrences:
1. Equipment to remove the column
2. Procedure of removing column
3. Explain what implications will it have on the building (it was designed as a structural component)
5. Explain if some adjustments to other structural components is required
Explanation / Answer
Equipments and Procedure :
The work is undertaken by use of hydraulic jacking equipment to transfer the load from the existing column into the replacement structure. Rather than introduce a separate system of temporary works we try to introduce the new permanent support structure at an early stage and transfer the load into it before removing the original column. This minimises the possibility of movement occurring. A preferred method is to use a flat jack inflated with oil during the transfer of load and then to transform the oil with resin or cementitious grout once the transfer of load is complete. // http://www.geostructuralsolutions.co.uk/column_replacement.html
Other Considerations
In case of corrosion of reinforcement and significant concrete deterioration, the load is redistributed in the structure before repair to a new pattern which must be considered while designing the repair. Even the adjoining members may have been affected by this redistribution.
The removal of concrete within a column cage must only be done if the column is unloaded. Otherwise, the longitudinal bars may buckle and compression failure of column may take place.
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