The stress study on half-size model of the intersection part of bottom longitudinals and transverse bulkhead in tanker was made under tension in testing machine. The ordinary bracket type, thicker bracket type and lapped bracket type were tested in elastic state and partialy plastic state. These results suggest that the type without chock (near intersection) is better than that with chock, the thicker bracket has nearly the same performance as the ordinary bracket, and the lapped bracket has large stress concentration at the lapped end.