The modelling of outflow hydrographs for dams with uncontrolled spillways is an iterative arithmetic process which lends itself well to spreadsheet calculation. The outflow period is broken up into discrete time increments to create a tabular format and inflows, outflows and other related data can be calculated for each time period. Modern spreadsheets (as opposed to earlier DOS versions) also have powerful charting capabilities where the copious amounts of tabulated input and output data can be conveniently summarised and presented in chart form.
Thirty one years ago I graduated as a civil engineer with a distinct dislike for computers, having studied Computer Science in the days of card punches and long queues in the computer centre waiting to find one more punch error in my deck of cards.
I undertook research for my PhD in Materials Science, bought a personal computer in the days of the original Apple computer and found that getting the computer to do what the salesperson told me it could do was not that easy.
For the last eighteen years I have been providing professional advisory services with regard to the effective application of computer technology in support of business - so, what happened?
Award-winning projects that demonstrate excellence in their quality of development, delivery and sustainability often gain high profile in media and press releases, but the IT systems, software development tools and development processes that underlie these projects are often overshadowed by the more visible end results.
The waters off South Africa are rich in fish, yet it has the straightest coastline in the world with the least amount of natural protection and is exposed to very high wave energy. This is best illustrated by the problem of measuring the length of the coastline.
National roll-out of solar-powered traffic lights launched to combat traffic chaos
The smart building brought to South Africa
How CEBP will change the face of business communications
'Must includes' for public sector tenders
Precast concrete elements dominate in new housing project
An IT entrepreneur discovers the value of systems
South Africa has much to gain - and lose - in African oil sector
Intermap awarded contract by Alfred Nzo Municipality
First board pressed ahead of schedule
Concrete Manufacturers Association invites entries to its Awards for Excellence competition
Microtunnelling and pipe jacking compendium in preparation
Sunspot is harbinger of new solar cycle, increasing risk for electrical systems
Load-shedding 'huge concern' for SA building sector
High-end finite element analysis tools for civil engineers available in South Africa
The paper argues that, on a global basis, transportation has had a major impact on the earth. Transport is discussed against the background of the population explosion, economic growth and the limits on the earth of certain critical resources and in its ability to purify the evergrowing pollution.
Two of the gravest challenges faced by the Republic are (i) the need to build cities and industries for approximately 20 million people by the end of the century and (ii) the solution of the environmental problems which this effort will involve. Pollution, seen as disturbing equilibrium, is a serious threat both within the city and on its surroundings. The engineer will be heavily involved in solutions to these problems, but to increase his effectiveness a re-examination of the engineer's role in urban planning and environmental control is necessary.
The Northwestern Cape is not the most hospitable part of South Africa, and young Patrick Fletcher, who hailed from the island of Jura off the coast of Scotland, must have had mixed feelings when he arrived there in 1850.
Richard Thomas Hall, the engineer who conceived, designed and built the narrow-gauge railway through the forbidding country from Port Nolloth to Okiep, was born in Falmouth, Cornwall, in 1823.
The year 2007 marked the 85th anniversary of the founding of the Jeffares & Green Group. To mark this occasion, Chronicles from the Bushveld : Adventures of Pioneering Engineers in Southern Africa was published to pay tribute to the achievements of JLS Jeffares, Hal Green, and other giants of the civil engineering profession. Accounts of their early exploits were preserved in the form of diaries and letters written in the bushveld by the women who accompanied the expeditions. These 'chronicles' make fascinating reading for anyone with an interest in the veld, wildlife or history, and are all the better for having been written by non-engineers, thus avoiding the pitfalls of an overly technical focus. As such, the book is not the history of Jeffares & Green, but a celebration of civil engineering in southern Africa that can be dipped into by anyone at any time.