23. Sautreau, M. 
France 
NUMERICAL CADASTRAL SURVEYING TEST 
BY ANALYTIC PHOTOGRAMMETRY 
Numerical cadastral surveying tests by analytic photogrammetry were performed on an area of 370 hectares 
for the purpose of determining either ‘framework points’ for use in making a property survey on the ground 
or all the peaks of the properties. Different aerial photographic coverages were made at scales of 1: 8 000, 1:5 
000 and 1:2 500. All the points processed by photogrammetry were previously beaconed. The topometric 
operations provided the points of frame for the photogrammetric work as well as for the control elements 
(points and a great many distances). The photogrammetric operations consisted of two phases: 
I) — analytical aerotriangulation involving about 20 points per pair, and 
2) analytical restoration pair by pair for all the other points (framework or property peaks). 
A great many distances were then calculated. Checks were made of the remainders at the points of frame, the 
differences at the points of control, the connections between strips, the remainders at the pair fitting points 
(analytical restoration phase), the differences in the distances. The results are given and commented on. 
24. Shamacharya, K. 
Srinivasan, T.R. 
India 
USE OF SMALL SCALE AERIAL PHOTOGRAPHS FOR 
THE PREPARATION OF SMALL SCALE SOIL MAPS 
The procedure adopted for the preparation of small scale soil maps using a systematic aerial photo- 
interpretation combined with field check in respect of an area of about 1800 sq. km. is presented. A special 
feature of the method is the use of small scale aerial photographs (1:60 000) for the entire work, namely, 
interpretation, detailed survey of sample strips and field check. 
Land systems, facets, and sub-facets have been used for the delineation of interpretation units, leading to soil 
maps in terms of physiography and soil taxonomy qualified by phases. Soils classified according to the new 
American System have been mapped as associations of sub-groups and great-groups respectively in the 1:100 
000 and 1:250 000 soil maps. 
The cost and time are respectively one-fifth and one-sixth of those required for mapping the same area by 
conventional methods in vogue at present in India using planimetric bases. As such, this procedure is 
recommended for the preparation of a soil map of India speedily, economically and accurately, especially 
because only about one-fourth of the country has so far been covered by field soil surveys and also because 
1:60,000 or smaller scale aerial photographs are available for nearly the whole of the country. 
25.  Ternryd, C.-O. 
Adolfsson, B. 
Sweden 
THE USE OF MODERN METHODS IN HIGHWAY DESIGN 
IN SWEDEN DURING THE YEARS 1968 - 1972 
The use of photogrammetry, geodesy and data processing within the Swedish National Road Administration 
for highway design and construction has been further developed. The main principles are, however, the same 
as in previous periods. 
For geodetic field-work, combined instruments for angle- and distance measurement have shown to be very 
effective, especially during the road construction period. The instruments are used as well for measuring as for 
setting out. At present, the following distance measuring instruments are used. 
16 AGA Geodimeter mod 6 
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