Mkikuyu- Akili timamu
JF-Expert Member
- Feb 16, 2018
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Kevin85ify
Have you read that document Mr?
1.It clearly says electric SGR is 40% less expensive to operate than diesel.
2. Yes, chinese Class 1 has less maintenance costs over its life cycle (100 years) but you pay for the costs upfront i.e Concreate embankments, bridges for maintaining 1.2 Gradient, curvatures
3.There is no superior safety for Class1..AREMA is sufficiently safe and is used in USA & Europe
4. TZ SGR is a joint venture btwn TZ & Rwanda..Congo is also coming on board..Dont worry about cargo, Tz is moving its capital to dodoma while mines in congo & TZ are now ready for cheaper transport of products to the dar port
10. What is the difference between AREMA (American Railway Engineering and Maintenance-of-Way Association) and China standards?hile
Have you read that document Mr?
1.It clearly says electric SGR is 40% less expensive to operate than diesel.
2. Yes, chinese Class 1 has less maintenance costs over its life cycle (100 years) but you pay for the costs upfront i.e Concreate embankments, bridges for maintaining 1.2 Gradient, curvatures
3.There is no superior safety for Class1..AREMA is sufficiently safe and is used in USA & Europe
4. TZ SGR is a joint venture btwn TZ & Rwanda..Congo is also coming on board..Dont worry about cargo, Tz is moving its capital to dodoma while mines in congo & TZ are now ready for cheaper transport of products to the dar port
10. What is the difference between AREMA (American Railway Engineering and Maintenance-of-Way Association) and China standards?hile
From your own document:-
a) The formation width (top width of embankment) is 7.7 meters for Chinese standards while AREMA is 6.6 meters
b) The height, design and construction of the embankment which is limited to a minimum of 2.5 meters high for Chinese standard and 0.64 meters for AREMA. These high embankments in the Chinese standards require slope protection.
c) The Chinese classification requires the herringbone concrete structure for protection of embankments and concrete masonry for higher embankments of 6 meters while this is not a requirement for the AREMA standards require only benching and grassing. See illustration below:
d) The safety factor in the concrete structures is higher in Chinese standards than the AREMA standards.
e) The utilisation of engineering materials especially the geo-synthetics (geogrid and geotextile) for treatment of soft ground, the backfilling material and soft ground treatments are different in both Chinese and AREMA standards. The general design and construction standard differences in the two standards would therefore make a railway designed and constructed to Chinese standards more expensive than the one designed and constructed to AREMA standards. However, this is only looking at investment cost and not life cycle costs which are much lower in the case of the Chinese standards due to lower operations and maintenance requirements as explained earlier.
f) Nevertheless for Uganda, the Engineering cost estimate provided by Gauff Ingenieure which was based on AREMA standards, is higher than the negotiated contract price of Malaba-Kampala SGR based on the Chinese standard. This was due to meticulous negotiations that were carried out.
g) There is no super bridge along the route but on Uganda route there is a 1KM bridge over the River Nile.
h) The Dar Es Salaam-Morogoro contracting mode is design-and-build, whereby the contract only stipulates the development of infrastructure while in Uganda it is EPC/Turnkey mode which does not only look at the infrastructure but also equipping it for operations with locomotives and rolling 13 | Page stock. The design-and-build places major risks to the employer in case any design inadequacies and or construction defects affect the operations and the performance of the trains, while in EPC/Turnkey, the contractor takes all risks associated with the construction and testing the train system operations.