An Iraqi electricians working on power cables and a tangle of wires in Baghdad. In many Arab countries, it always comes back to power outages. Photo: dpa
Baghdad / Beirut / Cairo. Samar Hassan fed up with the power cuts that plague their neighborhoods in the Lebanese capital Beirut regularly. Samira Ahmed The Egyptian, each time a sinking feeling in my stomach when her husband moved into their slum on the outskirts of Cairo in perilous heights cable to drain to electricity for the common budget. In Iraq, in turn, led angry protests from the public against the constant blackouts in bloody clashes with security forces. In June, while one protester died and dozens more were wounded - the electricity minister, had to resign.
During the summer in the Middle East from week to week will be hot and the temperatures in some places even to 50 degrees in the shade, climb the minds of the population because of the excruciating heat increasing electricity shortage. Somewhat peaceful relations and the global triumph of consumerism raise expectations with which the crumbling infrastructure in many Arab countries can not keep up.
The Affliction separates the social classes from each other. More and more members of the middle classes can afford air conditioners, refrigerators and other appliances that eat a lot of power - especially if they all crave the same time after a refrigerated room and a cold soda. For the poor, however, the current is often not even to their huts in the evening light have.
Wednesday, August 11, 2010
Thursday, August 5, 2010
Electricity and excavations
2. Existing utilities that cross the pipeline trench prevent shields
from being pulled forward. Pulling and resetting shields
around crossing utilities is time-consuming plus the area
around the crossing utility has to be shored in some other
way. In pit construction any existing line that crosses through
the hole is enough to prevent use of a shield.
Because most water, gas, and electric installations are
within the top 8 ft of the surface, it is possible to remove the
top shield and pull lower shields under the utilities. Shoring
or sloping still needs to be provided above the boxes.
S h o r i n g S y s t e m s S e l e c t e d f r o m Ta b u l a t e d D a t a 389
9.6.2 Shoring Shield Size and Nomenclature
The basic elements and nomenclature of a shoring shield are shown in
Fig. 9.30. Shoring shields and boxes are described by height × length ×
wall thickness. The wall thickness is nominal. Most shields are constructed
with 3/16-in plate “skin” over tube steel ribs so the actual
wall thickness is nominal size +3/8 in. Standard heights are 2, 4, 6, and
10 ft. Standard lengths are in 2-ft increments from 10 to 32 ft. Wall
from being pulled forward. Pulling and resetting shields
around crossing utilities is time-consuming plus the area
around the crossing utility has to be shored in some other
way. In pit construction any existing line that crosses through
the hole is enough to prevent use of a shield.
Because most water, gas, and electric installations are
within the top 8 ft of the surface, it is possible to remove the
top shield and pull lower shields under the utilities. Shoring
or sloping still needs to be provided above the boxes.
S h o r i n g S y s t e m s S e l e c t e d f r o m Ta b u l a t e d D a t a 389
9.6.2 Shoring Shield Size and Nomenclature
The basic elements and nomenclature of a shoring shield are shown in
Fig. 9.30. Shoring shields and boxes are described by height × length ×
wall thickness. The wall thickness is nominal. Most shields are constructed
with 3/16-in plate “skin” over tube steel ribs so the actual
wall thickness is nominal size +3/8 in. Standard heights are 2, 4, 6, and
10 ft. Standard lengths are in 2-ft increments from 10 to 32 ft. Wall
Friday, February 19, 2010
Emergency and Backup Power Sources
Saturday, February 6, 2010
Loadshedding book review
Sunday, January 27, 2008
power cuts in South Africa
...Neighbours like Botswana and Namibia, which rely heavily on South African energy exports, have also been badly hit by the disruptions in the region's economic and political powerhouse. The outages have undermined confidence in South Africa, with incidents such as the stranding of hundreds of people on tourism icon Table Mountain because of a power cut gaining international media attention.
power cuts in South Africa
...Neighbours like Botswana and Namibia, which rely heavily on South African energy exports, have also been badly hit by the disruptions in the region's economic and political powerhouse. The outages have undermined confidence in South Africa, with incidents such as the stranding of hundreds of people on tourism icon Table Mountain because of a power cut gaining international media attention.
"The unprecedented unplanned power outages must now be treated as a national electricity emergency situation that has to be addressed with urgent, vigorous and co-ordinated actions," Public Enterprise Minister Alec Erwin told journalists after a cabinet meeting today. "We are viewing the next two years as being critical," he said, as government officials unveiled measures, including rationing, price hikes and a massive switch to solar power....
Source
Friday, January 25, 2008
Load shedding a threat to the industry
Load shedding a threat to the industry - Tourism Council
Johannesburg - Following the continuous electricity load shedding in the country, the Tourism Business Council of South Africa (TBCSA), has come out spitting fire on the apparent lack of infrastructural forward planning on the side of the country’s
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