Sw.
Fixed
ADC Display
Time
Data
1
A
F
Primary Group 11
10-
F
51
F
Primary Group 61
60--
F
181
F
Primary Group 19:
Secondary Group 1
Analogue-to-
Digital Converter
190 -
F
Secondary Group 4
231
F
Primary Group 24,
240
F
MXR Advance & Reset
Chan No Display
Sequence
Control
Convert
Reset
End of Convert
Clock
Tape Format Sequencer
&
Logic
Interface
Read
Write
Magnetic
Core Memory
Electrotyper Model "Golf (Option) Ball
Digital Magnetic
Tape Recorder
Control & Status
MAIN SYSTEM CONTROL
Master
Clock
Fig. 5. System block schematic diagram
12 bits and, in operation, is made to resemble two independent stores of 2,048 x 12. As one half of the store is being filled with digital data, the other half is unloaded at a transfer rate of 28,800 characters per second, via the tape format sequencer, to the digital magnetic tape unit.
Construction of the building and
Fig. 6. Vertical face of building
40
EVERE
erection of the latticed-steel masts are now nearing completion. Installation of the main data-logger is now under way, but recording of wind effects is already being done. Fig. 3 shows the experimental building and masts when under construction.
The capital cost of the project is over HK$2 million. This has been
provided by the Hong Kong Govern- ment; Nuffield Foundation; British Iron and Steel Federation; Ministry of Overseas Development of H.M. Gov- ernment; and the University of Hong Kong; who jointly sponsored the investigation.
Many companies have given material help during construction of the pro- ject. These include: Cable & Wireless Ltd.; Gammon (H.K.) Ltd.; Intrusion- Prepakt (Far East) Ltd.; Dodwell & Co. Ltd.; Crittal-Hope Export Ltd.; Pilkington Bros. Ltd.; Steel Structures Ltd.; Jardine Engineering Corp. Ltd.; Hong Kong Electric Co. Ltd.; Gilman & Co. Ltd.; American Engineering Corp. Ltd.; Innis & Riddle (China) Ltd.; British Insulated Callender's Ca- bles Ltd.; and Harvey Main & Co. Ltd.
The project uses anemometers and pressure cells developed by the Elec- trical Research Association of Great Britain and the UK Building Research Station.
Acknowledgement
Author of this feature, Professor Sean Mackey, OBE, ME, BSc, Ph.D, MICE, MIStructE, FGS, is head of the University of Hong's civil engineering department and director of the Cape D'Aguilar project.
Far East BUILDER, January 1969.