networks questions

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Re: networks questions

Post by engy on Fri 02 Jan 2009, 4:21 pm

ana sha5seyan masme3toch all emperical 5ales

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Re: networks questions

Post by maged on Fri 02 Jan 2009, 4:23 pm

فعلا الدكتور مقلش امبريكال خالص
ولا قال اننا نستخدمها في حل اي مشكله ...هو ادى القانون وخلاص
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Re: networks questions

Post by amelsakka on Fri 02 Jan 2009, 5:02 pm

I think the problem in the sheet doesn't have Ka or Kg.
I believe since he didn't mention arithmetic or geometric, then we should use the general equation:
Pn = Po * (1 + i/100)^n

I think we need to ask Engineer Eman or Dr Yehia, should we use the consumption increase rate equation by default or not.
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Re: networks questions

Post by Mana on Fri 02 Jan 2009, 5:08 pm

men b2a m3ah nemrtDr Yehia 3alatol i think eno momken yefedna aktr mn Eng Eman Very Happy
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Re: networks questions

Post by Mana on Fri 02 Jan 2009, 5:14 pm

Ana isa 7aklm bashmohandesa Eman fe el bet kman belzabt nos sa3a hya 2latly kda lo ay 7ad 3ando ay so2al 3ayzeny as2lholh ektbo hena ok
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Re: networks questions

Post by engy on Fri 02 Jan 2009, 5:36 pm

es2alyha ya mana 3ala mas2alet el sana elly fatet beta3et el masoura ely etkasaret
November 2007 in Giza Governorate , 600 mm main pipeline was broken due to traffic problems the line was closed after 1 hr . the line is 2km away from the PS & THE READEADING IN the PS showed fall of pressure from 36m to 9m . Using simple calculations , calculate the volume of water discharged in the surrounding street ..

Very Happy thanx ya mana

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Re: networks questions

Post by amelsakka on Fri 02 Jan 2009, 5:46 pm

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Re: networks questions

Post by amelsakka on Fri 02 Jan 2009, 8:45 pm

engy wrote:es2alyha ya mana 3ala mas2alet el sana elly fatet beta3et el masoura ely etkasaret
November 2007 in Giza Governorate , 600 mm main pipeline was broken due to traffic problems the line was closed after 1 hr . the line is 2km away from the PS & THE READEADING IN the PS showed fall of pressure from 36m to 9m . Using simple calculations , calculate the volume of water discharged in the surrounding street ..

Very Happy thanx ya mana


I think the solution should be as following:

H(L) = 8 * F * L *Q^2 / (PI^2 * g * D^5)
(36-9) = 8 * 0.02 * 2000 * Q^2 / (3.14^2 * 9.81 * 0.6^5)
-> Q = 0.797 m3/s
-> Volume = Q* time = 0.797 m3/s * 1hr * 60 * 60 = 2869.2 m3
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Re: networks questions

Post by engy on Fri 02 Jan 2009, 11:29 pm

thax aloteeeeeeeeeeeeeee Very Happy

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Re: networks questions

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