150.07 
125.0 
100.0 
75.0 
50.077 
250r 
00 — - 
  
  
  
  
Ss — 
- 
  
  
0.0 25.0 
50.0 75.0 
100.0 
1 
125.0 
1 il 
1500 1750 n 
FiG.6. DISPLACEMENT FIELDS IN LEIGHTON BUZZARD 
: 6 271mm 
SAND 
D/Bz4 
ID = 75% 
  
  
  
  
  
T 
100 
T 
120 
T 
I40 160 
mm 
FIG. 7: CONTOURS OF MAXIMUM SHEAR STRAIN IN LEIGHTON 
BUZZARD 
D/B = L 
1D = 75 
5 227mm 
9-ACKNOHLEDGEMENT S 
This work has been conducted while the 
author was a doctoral student at the Civil 
Engineering Department of Glasgow 
University (U.K), the help and guidance 
provided by Professor D. Muir-Wood, head 
of department, and Mr N. Welsh, head of 
the department of  photogrammetry and 
photography at N.E.L (East-Kilbride, U.K), 
is gratefully acknowledged. Thanks are 
also due to Mr Senouci for drawing all the 
figures. 
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