+ 0.6 ft 
| +0.4 
- 0.6 
Breaker 
© Plunging 
X Spilling 
* Collapsing 
Distance from Original SWL Intercept (ft) 
‘ 
1 
[o) 
[eo e) 
20 — 2.0 
Vemeatit 
25 
30 
O 50 100 150 200 250 
Cumulative Time (hr ) 
Figure 38. Changes in breaker type and position along range 5 
of experiment 72B-10. 
69 
