‘est 
n 
Fe 
BUILDING RESEARCH ESTABLISHMENT, Department of the Environment 
Photogrammetry has been used to record the newly escavated 25 m high, 65° 
sloping faces of a motorway cutting in Chalk. Further surveys at yearly 
intervals will show the effect of weathering, particularly frost action, on the 
faces. Deformations during the construction and failure of a trial flood 
embankment were monitored in collaboration with City University and Hunting 
Surveys Ltd. Equipment used has included a Wild P30 phototheodolite and 
Zeiss (Jena) UMK 10/1318 cameras. 
CARTOGRAPHICAL SERVICES (SOUTHAMPTON) LIMITED 
Terrestrial photogrammetry has been used to help local authorities with 
design problems associated with the stability of rock faces. The company have 
also developed a system of supplying visual shadow maps for planning 
authorities, using computer techniques allied to photo- interpretation and direct 
digital output from photogrammetric instruments. 
THE CITY UNIVERSITY, Department of Civil Engineering 
The Department is now equipped with a range of stereoscopes, a Multiplex 
plotter, Zeiss (Jena) Topocart plotter, Stecometer and UMK cameras, and a 
darkroom with Milligan printer. 
The establishment of a terrestrial photogrammetric unit has allowed collabora- 
tion with a variety of workers on projects concerned with classification of 
earth slips (Transport and Road Research Laboratory), snow depth on hillsides 
(Institute of Hydrology) (17), structural deformations (British Rail), wave 
profiles produced by floating breakwaters (National Physical Laboratory and 
Floating Breakwaters Ltd), small junction surveys (Metropolitan Police), 
hydrophone location on oil prospecting rig (British Petroleum Co Ltd), volume 
'! 
variation on human bodies (Medical Research Council) and "as made'' drawing 
procedures for ship interiors (Ministry of Defence (Navy)). 
FAIREY SURVEYS LIMITED 
Photogrammetry has been applied to a variety of special tasks during the 
period (39). The shape of a cooling tower at an electricity generating plant 
was measured using stereoscopic photography taken from ground stations with 
a Wild RC5A wide angle survey camera tilted at approximately 15^ upwards 
from the horizontal to give coverage of the outside wall of the circular tower. 
Control points were established by classical triangulation methods. The 
photography was restituted in a Zeiss (Oberkochen) Stereoplanigraph C8 and 
ring contours were plotted at 2 m vertical intervals at a scale of 1:100 for the 
whole height of the tower. Another project involved photography and contouring 
of a clay model, which had been made by a landscape architect for planning a 
derelict land reclamation scheme. The landscape model was both photographed 
and plotted using Multiplex projectors. 
The survey of the developed surface of a steel dome approximately 10 m in 
diameter was carried out for the purpose of producing template drawings. The 
dome was penetrated with several hundred pipe apertures and the templates 
were required for manufacturing heat insulation cladding for the surface areas 
between the apertures. A Wild C40 ste reometric camera was used to take