fun- 
pe); 
size 
are 
| (an 
full 
get 
Theo 
I Ni 
they 
Carl 
ware 
in 
  
2 
ES vum y. 
m2 n 19 m mm e mm. 
  
  
  
// 7 ee 
suitable camera will ensure undoubtedly better 
results. 
  
  
  
11 12 13 14 
10 
15 16 17 18 19 
+Z TY % 
+X 37 mm 
0 em uS 
co-ordinates scale 
The relative accuracy are calculated too: 
m X /] X -17 11500, 
my [Y #1 / 10900 , 
m7 /|.Y 1 /:11070.. 
4. CONCLUSIONS 
The optimum photographic sonditions, i.e. the len- 
gth of photographic base line must be equal to the 
width of structure and the value of the base/dis- 
tance ratio ranges from 1:1 to 1:2.5 (Miloshev, 
1983) are not kept because of the ground conditi- 
ons. Nevertheless the final results are satisfac- 
tory. 
The optimum photographic conditions and the most 
REFERENCES 
1. Bujakiewicz, A., Preuss, R., 1983.  Photogramme- 
tric measurement of engineering constructions. 
XVII Congress of the International Federation of 
Surveyors. Vol. 6, Sofia, p. 612.2. 
2. Miloshev, St.,1983. Photogrammetric measurements 
of deformations. The Doctoral Dissertation,Sofia. 
Author's address:St. Miloshev 
"Mladost", Bl. 91, En. 1, Fl. 11 
Sofia 1797, Bulgaria