16 
Department of Housing and Construction, Australian Government 
  
This Department is the construction authority for highway and 
airport services controlled by the National Government. These 
cover airports in all States and Territories plus roads in the 
Australian Capital Territory and the Northern Territory. Photo- 
grammetric services are provided for this Department by the 
Australian Survey Office, which has responsibility for all 
"project" photogrammetry for the Australian Government and is 
quite separate from the Division of National Mapping. 
This Department is presently doing some road design work using 
longitudinal and cross sections obtained by field survey and 
supplied on magnetic tape. There is no immediate intention to 
use photogrammetrically acquired data in design work. 
Photogrammetric information is used for location purposes, par- 
ticularly for roads in the Northern Territory which is served 0 
in this regard by a Branch of the Australian Survey Office in 
Darwin. 
National Capital Development Commission 
  
This Commission is the planning authority for the National Capi- 
tal in Canberra and plans the detailed development of that city 
and surroundings, including the road system. Extensive usage is 
made by the Commission of photogrammetric data produced by the 
Australian Survey Office in this detailed planning. Such data 
includes Orthophotos. 
Commonwealth Railways 
  
This Authority is responsible for the location, design, construc- 
tion, maintenance and operation of railway facilities controlled ® 
by the Australian Government, including non-metropolitan railways 
in South Australia and all railways in the Northern Territory. 
During the past four years, the Australian Survey Office has per- 
formed an extensive mapping project for this authority for the 
proposed Tarcoola-Alice Springs railway. The basic scale was 
1:24 000 with a contour interval of 10 feet. The distance cove- 
red was some 820 km, of which all but the first 160 km were done 
by photogrammetry. The strip width varied but was generally about 
3 km. Preliminary design is being done from these maps. 
Other Railway Authorities 
  
As stated under the initial heading of railway authorities, the 
usage of photogrammetric methods by railway authorities is rather 
less than that by highway authorities. The reason is that much 
less railway development is being undertaken than highway develop- 
ment. It is known, however, that some usage is made by some rail- 
way authorities in relation to the design of improvements to per- E 
menent way and to installations and property under the contro] 
of those autnorities. 
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