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RE: Residential Garage (Help!)

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IBC 2000, table 1607.1 minimum uniformly distributed live loads and minimum
concentrated live loads states "(16) garages (passenger cars only), uniform:
50 psf, concentrated: Note A"

Note A states "floors in garages or portions of buildings used for the
storage of motor vehicles shall be designed for the uniformly distributed
live loads of table 1607.1 OR the following concentrated load: (1) for
passenger cars accommodating not more than nine passengers, 2000 pounds
acting on an area of 20 square inches .... "

Eric Green, PE



-----Original Message-----
From: Neil Moore [mailto:nmoore(--nospam--at)innercite.com]
Sent: Thursday, March 28, 2002 9:25 AM
To: seaint(--nospam--at)seaint.org
Subject: RE: Residential Garage (Help!)


Roger:

The 2000 lbs on 2'-1/2 feet square is for designing floors.  The 2000
pounds for a concentrated wheel load is for parking garages both private or
pleasure-type vehicles.  (per the 88 UBC).

Neil Moore, S.E.
neil moore and associates

At 07:04 AM 3/28/2002 -0600, you wrote:
>The 88 UBC says "2 1/2 feet square" and ASCE7-98 says "2.5 ft2".
>Roger C. Davis
>Architect
>SDS Architects, Inc.
>
>
>-----Original Message-----
>From:	Neil Moore [mailto:nmoore(--nospam--at)innercite.com]
>Sent:	Thursday, March 28, 2002 12:06 AM
>To:	seaint(--nospam--at)seaint.org
>Subject:	RE: Residential Garage (Help!)
>
>A 2000 lb concentrated wheel load was specified in Section 2302(a) of the
>1970 UBC.  Apparently the 20 in2 area was added into the  UBC in 1994 as it
>has the black mark in the right side of the margin in Section 1604.3.
>
>And you can certainly argue that the 20 in2 area requirement is a real
>load, especially if you use a car jack to change the tire.  How you spread
>or share this load to adjacent joists or other supports is up to you.  I
>have witnessed some heated conversations about this with at least one
>building department official.
>
>
>Neil Moore, S.E.
>neil moore and associates
>
>
>
>At 08:04 PM 3/27/2002 -0500, you wrote:
>>This is in response to Shamir Ghosn and others who respond to my posting.
>>
>>Am I reading 1607.3.3 correctly ? It says parking garages for storage of
>private or pleasure-type motor vehicle with no repair or refueling shall
>have a floor system designed for a concentrated load of not less than 2000
>lbs acting on an area of 20 sq. inches. 20 sq. inches is only 4.5 in.
>square so that all the 2000 lbs will be concentrated solely to one floor
>joist. If it says 20 in. square then I would have distributed it to 2.78
>sq.ft area as per Shamir suggested. Please respond.
>>
>>The garage floor, by the way, will be finished with 3" (ave.) light weight
>concrete and sloped to drain toward the entrance of the garage.
>>
>>Thanks a lot to those who responded.
>>
>>ASQ, P.E.



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