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Dams Planning Factors

a. Topography
If the review is only based on topography, the concrete dam would be more profitable. If the surrounding buildings on the river channel but cramped. otherwise the flow of the river shallow but wide, the dam would be cheaper urugan. However, due to many other factors that need to be taken into account between Lail} geological conditions in the area of ​​the dam candidates, availability of materials with a quality that qualifies for the dam body, the ability of technology development is then in fact sometimes even happen otherwise.

b. geological Engineering
In essence, geological research technique that needs to be done not only in the area around the seat of the prospective dam to be built, but must also conducted research in the area of ​​prospective reservoir and surrounding areas to mengidentifisir between the cracks resulting in leakage or the possibility of their region-daerag easy Avalanche. Cementation job carried out in the crevices of the fracture and the prevention of avalanche-Iongsoran in conditions of reservoirs already filled will membutukan greater cost.

While if left alone may be water loss is very excessive to flow out from the crevices of the fracture. In addition adanyan fissures widely spread buffer resulted in an avalanche of large capacity which may be rolled into the reservoir. With the inclusion of a time climbing around the reservoir will cause the full reservoir filled with sediment within a very short time, followed by water keluamya sehinggan sudden surges are very dangerous area next hilimya.

c. Foundation
Urugan dam can be built on almost all topgrafi and geological conditions were encountered, whereas only concrete dam was probably built on solid rock. Only necessary repairs with cementation (grouting). If the foundation terqiri of land that pass water or a lower carrying capacity. If hasilhasil calculation and analysis of very high gain financing figures for foundation repair work it is recommended that the dam as well as the seat of the plan dimensions than the dam needs to be reviewed and reviewing kemungkinankemungkinan at other alternatives.

d. materials Dams
Based on the premise that the most economical type of dam should be selected it is necessary to show the following things:
 – Quality and quantity of materials that may be present around the seat of the dam.
 – distance haulage from excavation area to the landfill prospective dam body.
Considering almost all qatuan (soil, sand, gravel, and stone) can be used for construction benungan urugan so many alternatives that should be considered and compared before getting an alternative construction of the dam body most economical.

f. building Concrete drop
When a dam flood discharge capacity is expected to be greater than the volume of the reservoir and if the terms of the placement of a building topography delegation will megalami hardship, then the alternative dam meungkin urugan technically will not be able to diprtanggungsawabkan and concrete weir may be more adequate. The most notable deficiencies in urugan dam dam is weak resistance to runoff (overtoping) and in such hydrological conditions.

Urugan dam is an alternative that is not possible. Memporsir alternative urugan dam must be balanced by making buildings a large spillway so that capacity could accommodate large discharge and manufacturing would cost so the magnitude, so when compared with the price of the building was close to the price of alternative pelimpahnya concrete dam.

g. banguan Tapper
In effect the water contained in the reservoir will be used for a variety of needs with a wide range of technical penyadapannya. Generally, water is tapped from reservoirs needed for irrigation, power generation, drinking water, flood control, flushing and others. Beberpa building type tappers tappers include tower type, the type of dock berterowongan tilting each has its advantages and disadvantages.

In addition to the problems / issues that are technically and economically feasible, the construction of a dam will involve social problems such as the acquisition and transfer of population. transfer of public facilities of the area to be flooded. The effects of the construction of a dam will provide a very broad impact on people’s lives.