SQL has no concept of timeouts (other that lock timeouts). A timeout is a client application setting that controls how long the client app is willing to wait the server to finish before cancelling the query. If you need to set a timeout, you have to do that in the front end application.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability