I am designing a footing cap for drilled shaft using STM model as per AASHTO but getting error message for Tension ties in Z direction. it doesn't help if i provide hook or exra reinforcement. Could you please advise

Thanks

Question

I am designing a footing cap for drilled shaft using STM model as per AASHTO but getting error message for Tension ties in Z direction. it doesn't help if i provide hook or exra reinforcement. Could you please advise 
 
 Thanks

Vinay mysore · Answer

The Asb_prov is shown as 0.00 in^2 , There is no bottom reinforcement provided that's the reason the program is showing red flags. 
 Also provide hooks that will help as well. 
 If the solution does not work then try to increase the depth and width of the footing in Z direction. 
 If the above solution does not work then please email me the concerned file "Vinay.Mysore@Bentley.com" 
 You can create a new service case on Service now. 
 how to log Case. 
 https://communities.bentley.com/products/bridge_design___engineering/w/bridge_design_and_engineering__wiki/52987/how-to-log-case 
 
 Please check the below mentioned communities link with similar issue. 
 Footing Flexural Reinforcement - Effective Steel Area Calculation - LARS | LEAP | OpenBridge | OpenTunnel | RM Forum - LARS | LEAP | OpenBridge | OpenTunnel | RM - Bentley Communities 
 Leap Bridge Concrete - Effective Footing Flexural Reinforcement - LARS | LEAP | OpenBridge | OpenTunnel | RM Forum - LARS | LEAP | OpenBridge | OpenTunnel | RM - Bentley Communities