MCQOPTIONS
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				| 1. | 
                                    If the columns are effectively held in position and restrained against rotation at both ends. Recommend the value of effective length. | 
                            
| A. | 0.6×l | 
| B. | 0.65×l | 
| C. | 0.77×l | 
| D. | 0.9×l | 
| Answer» C. 0.77×l | |