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Re: geometric design of pedestrain bridge

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If pedestrian accessible, then the American Disabilities Act
regulations are applicable, eventhough there are some communities which
choose not to enforce those regulations. The ADA specifies maximum
slopes (inclines), handrail heights, intermediate rails etc. The
information is available online. (I am a senior moment) Please go to
www.google.com and search for ADA or American Disabilities Act.

Pax e Gratia
Robert P. "Bob" Ross, P.E.
Civil-Structural Engineer
Washington Group International,Inc.
Industrial Processes
17320 Red Hill, Suite 300
Irvine, Ca. 92614
Mobile 562-254-4604
Office 949-222-3978
FAX 949-222-3985
Nite; 714-389-0820
E-mail: Bob.Ross(--nospam--at)WGINT.com
E-mail: rprossi(--nospam--at)yahoo.com

----- Original Message -----
From: "Calvin Chang" <ccse(--nospam--at)ms68.hinet.net>
Date: Friday, January 4, 2002 2:32 am
Subject: geometric design of pedestrain bridge

> I am designing a pedestrian bridge which connecting the sidewalk
> of an existing bridge and a sports park on the ground. The
> pedestrian bridge deck is a sloped plane which allow  people
> riding bicycles. The elevation difference of the existing bridge
> and the ground is about 12m (40 ft.). It seems danger if young men
> or children riding bicycles down the pedestrian bridge with high
> velocity. My questions are:
>
> 1. What is the slope restriction?
> 2. What is the radius restriction if the pedestrian bridge is a
> curved bridge?
> 3. What is the handrail height restriction?
> 4. Is intermediate landing required just as stair landing, or we
> can design the vertical profile as a simple straight line?
>
> Any help will be greatly appreciated.
>
> Calvin Chang
>


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