The Invisible Landscape

Author(s):  
Lorenzo Caponetti

This chapter highlights the experiences and results of a decade-long investigation of an Etruscan water tunnel (cuniculum) on a central Italian farm and the adaptation of this engineering method to a contemporary water distribution system. The history of these drainage and water distribution tunnels is discussed and the attributes that have made it possible for Etruscan water systems to survive over two millennia are identified. The chapter then proposes ways that this technology can be applied to the challenges posed by sustainable agriculture today. The discussion concludes by comparing a zero emission water distribution system that is currently employed on the author’s farm to its Etruscan ancestor, and suggests how archaeological knowledge can be applied in contemporary agricultural contexts

1975 ◽  
Vol 97 (2) ◽  
pp. 117-125 ◽  
Author(s):  
H. S. Rao ◽  
R. A. Seitle

The objective of water distribution system control is to provide an adequate level of service at all points in the system economically under varying conditions of loading. With the increase in size and complexity of water systems, the need for reliable and economic operation has resulted in the use of digital computers for data acquisition and supervisory control. In this paper, the functional aspects of computer control of water systems are discussed with respect to (i) alternative system configurations for reliability and cost, and (ii) the application of mathematical models for simulation and optimization of the distribution system operation. Both on-line and off-line software requirements for computer control are discussed. Finally, examples of applications of recent developments in computer control are given together with directions for future research effort.


2008 ◽  
Vol 8 (4) ◽  
pp. 421-426
Author(s):  
J. Menaia ◽  
M. Benoliel ◽  
A. Lopes ◽  
C. Neto ◽  
E. Ferreira ◽  
...  

Concerns arise from the possible occurrence of pathogens in drinking water pipe biofilms and storage tank sediments. In these studies, biofilm samples from pipes and sediments from storage tanks of the Lisbon drinking water distribution system were analyzed. Protein determinations and heterotrophic counts on pipe biofilm samples were used to assess the Lisbon network sessile colonization intensity and distribution. Indicator and pathogenic microorganisms were analyzed in pipe biofilm samples, as well as in storage tanks biofilm and sediments, by using cultural methods and PCR, to assess risks. Results have shown that the Lisbon network sessile colonization is relatively weak in intensity. In addition, no meaningful hazards were apparent for both the network biofilm and the storage tanks biofilm and sediments.


Sign in / Sign up

Export Citation Format

Share Document