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Forums» International Building and Residential Codes -- Non-Structural Issues» Vertical clearance in Parking garage

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Vertical clearance in Parking garage
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Re: Vertical clearance in Parking garage By  C&A

Posts: 0

9/29/2008 9:54:00 AM

Help Help -- I would really appreciate some input on this conundrum...Thanks!


   

Re: Vertical clearance in Parking garage By  Speccman in CT

Posts: 0

9/29/2008 11:52:00 AM

C&A:

Is it possible that you are misreading CBC 1109A.8.1? It says:

"1109A.8.1 Vertical Clearances. Where required to be accessible, all entrances into, and vertical clearances within parking facilities shall have a minimum vertical clearance of..."

I think a sloppy use of the word "all" is part of the problem here. It flows over its real target ("entrances into...") and splashes onto another target by accident ("vertical clearances within..."), probably obscuring the code writer''s intentions.

Suppose you read the code sentence to mean the following:

"Vertical Clearances - If other code provisions require garage vehicular entrances to be accessible, provide vertical clearance of 98-inches minimum. Where other code provisions require accessible overhead clearance, provide a vertical clearance of 98-inches minimum."

This would let you apply the minimum clearance standard to the entire van route into the garage, to and from the accessible van spaces - and back out of the garage again. It would exclude spaces not indicated for accessibility - such as other vehicular parking spaces and other floor areas not on the van route.

It also appears to put CBC back into harmony with itself, with ADA and also with ICC/ANSI A117.1.

Has this approach helped? Let us know what you think. Maybe you can get an interpretation from the CBC authorities there in CA.

In general, technical writing rules tell you to avoid words like "all," "never," "none" and "always." They tend to create confusion where clarity is the goal.

Thank you.


   

Re: Vertical clearance in Parking garage By  peach!!

Posts: 0

9/29/2008 4:49:00 PM

8''-2" for the accessible aisles and spaces.. ANSI A117.. the code is pretty silent about it otherwise.. but I''m not in CA


   

Re: Vertical clearance in Parking garage By  Vmack

Posts: 0

10/1/2008 1:55:00 PM

Not familiar with the California Code and typically don''t respond to CA Code ?''s, but exception #1 to Section 1106.6 of the 2006 IBC states "In multilevel parking structures, van accessible parking spaces are permitted to be placed on one level." The logical assumpion is that was to eliminate the need for the 8''2" height throughout the structure.


   

Re: Vertical clearance in Parking garage By  C&A

Posts: 0

10/2/2008 8:38:00 AM

Thanks for the responses -- I will try Speccman''s analysis on the AHJ here. Since the 2007 CBC is a completely new code to everyone, the City BO is being very conservative about interpretations. Logic says that only the entrance, Accessible spaces and the drive aisles to those spaces should be required to be 8''2"....but will logic prevail? We shall see....


   
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