consider the following statements which of the following is/are true
1
Effective length of a battened column is usually increased in account for the additional load on battens due to lateral expansion of columns
2
As per IS 800: 1984, permissible stresses in bending compression depends on both Euler and buckling stress and the yield stress of steel.
3
As per IS 800: 1984, the effective length of column effectively held in position of both ends but not restrained against rotation, is taken to be greater than that in the ideal end conditions
4
As per IS 800: 1984, the effective length of column effectively held in position of both ends but not restrained against rotation, is taken to be smaller than that in the ideal end conditions