Solution for OS#2, OS#5 and OS#35 in ETABS

WARNING O/S #5 :

This warning means Pu > 0.75 Pc

Probable Solutions :

• Calculate and insert the actual value of k 
• Decrease the axial load if available .
• Increase the column size ( specially the width )
• Reduce the height if available .
• Increase f’c

 

WARNING O/S #2 :

This warning means that the required reinforcement ratio exceeds 6% for special sway or 8% for other cases This warning shows in case the column reinforcement is defined for Design . At splice area should be checked of the half of these ratio 3% and 4% respectively

Probable Solutions :          

• Calculate and insert the actual value of k if dns > 1
• If the column is short you can design the column with inserting the value of dns = 1 in Frame Design Overwrite and with deactivation P-D
• If the column is Slender But Nonsway ( from Step 5 results ) , you can design  the column with deactivation P-D
• Increase the column size ( specially the width )              
• Try to change the distribution of the bars in the column section            
• Decrease the axial load and the moments if available.             
• Increase f’c      

 

WARNING O/S #35 :

This warning means that the capacity ratio D/C ( ratio of required reinforcement to the used reinforcement ) exceeds 1 , This warning shows in case the column reinforcement is defined for Check , Note that user has to check the if the applied reinforcement exceeds the max reinforcement ratio .

Probable Solutions :

• Calculate and insert the actual value of k if dns > 1 
• If the column is short , you can design the column with inserting the value of dns = 1 in Frame Design Overwrite and with deactivation P-D
• If the column is Slender But Nonsway (from Step 5 results  ), you can design the column with deactivation P-D
• Increase the size and/or the number of the bars in the column section
• Try to change the distribution of the bars in the column section
• Increase the column size ( specially the width )
• Decrease the axial load and the moments if available .
• Increase f’c