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Re: [SPAM] - Country Factor on AASHTO Loading for Bridges - Please Help

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Dear Faiz Sahib,
 
Sorry for a delayed reply. NHA requires that all bridges under its control be designed for both tank (Class AA) and Class A loadings.
 
By the way, I work for Descon Engineering as a Structural Enginner. We had a couple of draftsmen (Imtiaz and Saleem) with us who had worked with you. They had nice words to say about you and very sweet memories of Saudi Oger.
 
Regards,
 
Hamid 
----- Original Message -----
From: Syed Faiz
Sent: Saturday, October 30, 2004 1:02 PM
Subject: RE: [SPAM] - Country Factor on AASHTO Loading for Bridges - Please Help

Hamid:
 
I would be interested to know:
 
What do the guidelines of NHA (National Highway Authority) stipulate as regards to the loading Criteria
to be used for design of bridges under its control?
 
Regards.
 
Syed Faiz Ahmad; MEngg, MASCE
Senior Structural Engineer
Saudi Oger Ltd
P.O. Box: 1449
Riyadh-11431
Saudi Arabia
Cell: +966-508-169304
-----Original Message-----
From: Hamid Mahmood [mailto:hamideng(--nospam--at)easynet.ro]
Sent: Thursday, October 28, 2004 7:19 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: [SPAM] - Country Factor on AASHTO Loading for Bridges - Please Help

Dear Iqbal & Faiz,
 
In Pakistan, even now Class-A and Class-AA (70 ton tank) loadings are used for the design of highway bridges. However, recently a new loading, Class-A1, has been introduced which, I believe, is still at proposal stage. Class-A vehicles are spaced at 65 ft. whereas class-A1 loading consists of closely spaced trucks. I agree that I have never heard of this country factor thing. In Pakistan,  loadings of West Pakistan Highway Code-1967 are used with AASHTO-92 and 96 codes for the design of bridges.
 
Regards,
 
Hamid
----- Original Message -----
From: Syed Faiz
Sent: Thursday, October 28, 2004 2:10 PM
Subject: RE: [SPAM] - Country Factor on AASHTO Loading for Bridges - Please Help

Iqbal:
 
Never heard of this "country factor" thing before.
 
In Pakistan (and for that mattter in India and other parts of the sub-con), I believe they use Class A and
Class AA (70-Ton Tank-Track loading) for the design of bridges.
 
At least, this is what I knew before; although I am out-of-touch from the scene for quite some times now.
 
Can you update me if things have changed now?
 
Regards.
 
Syed Faiz Ahmad; MEngg, MASCE
Senior Structural Engineer
Saudi Oger Ltd
P.O. Box: 1449
Riyadh-11431
Saudi Arabia
Cell: +966-508-169304
 
-----Original Message-----
From: CM Iqbal [mailto:cmiqbal(--nospam--at)isb.paknet.com.pk]
Sent: Monday, October 25, 2004 8:00 PM
To: seaint(--nospam--at)seaint.org
Subject: [SPAM] - Country Factor on AASHTO Loading for Bridges - Please Help - Bayesian Filter detected spam

    For designing of bridges, nearly every country is adopting her own specific design loads which are normally higher those specified by AASHTO loading.  As an alternate solution to have their own specifications written, a number of countries have now adopted AASHTO Specifications for designing of bridges along with a 'Country Factor', which is a multiplier ( 1.5 to 2.5) to cater for the local enhanced loading.
 
    I am writing a research paper on adoption of Country Factor, Could any one please let me know such details or its source related to Country Factors being adopted by different countries.
 
    Specially if you are in a Middle East country which has adopted AASHTO specifications with a specific Country Factor, please let me know its details.
 
Regards
C.M. IQBAL