4. What condition must be observed on the top surface of the assembly when welding the Floor Artachments (Items 3&4 ) to the Floor Stringer (Item 1)? 5. When welding the Floor Attachment (Item 4) to the Floor Stringer (ftem I) a(n) places. is first made at two 6. 4 fter the above welds are made, they are overlapped with a(n) with a(n) contour. 7. When welding the Floor Attachment (Item 3) to the Floor Stringer (ltem 1), a(n) is firs made in tao places. 8. After the welds mentioned in Question 7 are made, they are overlapped with a(n) with a(n) contour. 9. What must be done before the Floor Reinforcement Assembly (Item 2) can be welded into place? 4. What condition must be observed on the top surface of the assembly when welding the Floor Artachments (Items 3&4 ) to the Floor Stringer (Item 1)? 5. When welding the Floor Attachment (Item 4) to the Floor Stringer (ftem I) a(n) places. is first made at two 6. 4 fter the above welds are made, they are overlapped with a(n) with a(n) contour. 7. When welding the Floor Attachment (Item 3) to the Floor Stringer (ltem 1), a(n) is firs made in tao places. 8. After the welds mentioned in Question 7 are made, they are overlapped with a(n) with a(n) contour. 9. What must be done before the Floor Reinforcement Assembly (Item 2) can be welded into place