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Re: Airport Taxiway Bridges

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Consider, "Analysis and Design of Reinforced Concrete Bridge Structures --
Reported by ACI-ASCE Committee 343", ACI 343R-##.  
Section 5.10: Airport Runway Bridge Loads
5.10.1 Landing Gear Loads
5.10.2 Impact
5.10.3 Application of Wheel Loads
5.10.4 Braking Forces
5.10.5 Provisions for Crash Landing Loads

I have the 88 version but there is a 1995 version ($66.50 for members, $101.00
for non-members).  Call ACI at (248) 848-3800, Fax: (248) 848-3801, or see
website: http://www.aci-int.org

Hope this helps,
ed gonzalez

>>> "Bill Polhemus" <polhemus(--nospam--at)insync.net> 05/06/99 12:52PM >>>
To my surprise, we've not been able to get much information about design of
these.

FAA has a "circular" that devotes about 1 1/2 pages to some general
information.

In particular, we've got to worry about "Group VI Aircraft," and the loading
therefrom.

I am inclined to believe that using the AASHTO code is sort of
counterproductive since many of the assumptions made therein (esp. load
factors) aren't really applicable for a taxiway bridge.

Also, I have tried in vain to find information on the wheel loading pattern
for the Antonov 124 "Ruslan" cargo aircraft, which will be, I believe, the
"big enchilada" governing design of our bridge.

Anyone got any references for me?

Thanks.