Elevators of Hydramawt
Andre Willers
18 Jan 2014
Synopsis :
Nine-story buildings in Hydramawt , Yemen were enabled by
hydraulic lifts .
Discussion :
1.The city :
2.Hydraulic lifts :
Known since Roman times , probably earlier .
·
Conventional
hydraulic elevators. They use an
underground cylinder, are quite common for low level buildings with 2–5 floors
(sometimes but seldom up to 6–8 floors), and have speeds of up to 200 feet per
minute (1 m/s).
The Penthouse would then have been on the Fourth Floor . Can
be checked easily .
Look at the photo
3.The pressurised water :
Supplied through the Aquifer system under pressure through
underground tunnels for about 2 000 years .
Executive
Summary
The
southern section of the Umm er Radhuma- Dammam Aquifer System extends from the
Gulf coast in the north and the Oman Mountains in the south-east over about 800
km. It covers a total area of about 680,000 km2, stretching across
the vast Rub' al Khali Desert, the Dhofar-Najd Plain in Oman, and the
northeastern Hadhramaut-Al Mahra Plateau in Yemen. The aquifer system in this
section comprises three Paleogene (Paleocene-Eocene) Formations: the Dammam,
the Rus and the Umm er Radhuma, of which the Rus is the least important.
Groundwater flow is
generally from the central Arabian Peninsula in the west towards the Gulf coast
in the east. Further south and east, flow is mainly north and north-eastward
from the Hadhramaut-Dhofar Mountains, and westand south-west from the Oman
Mountains. Most of the groundwater entered the system during the pluvial
periods between 20,000 and 10,000 years ago, although there are indications of
limited present-day recharge through the Oman Mountains and the
Hadhramaut-Dhofar Mountains. Natural discharge occurs through springs emanating
from the Umm er Radhuma Aquifer along the edge of the Hadhramaut-Al Mahra
Plateau escarpment, or in the form of saline to hypersaline waters that form
sabkhas in the lowlands.
At present, the only
use of this aquifer system takes place in the Dhofar-Najd region in Oman and
United Arab Emirates (UAE) where the water is used for agricultural and
domestic purposes, and, to a lesser extent, for recreational or industrial
purposes such as water injection for the oil industry
4. When the water
system broke down , the city became uninhabitable .
5. The population
just walked away .
6. Who
wants to pay rent if the lift is not working ?
The neighbourhood has
run out of pressure .
Andre
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