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Re: Column located on 4" existing concrete slab (Balcony vs Deck)

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Interpreting the code, you might be right but say 4 people are standing
along the 14' side toward one post and they weigh about 200lb - the live
load would then be 800lb?

-  Aswin
_________________________________
Aswin Rangaswamy, P.E.
Jacobs Facilities Inc. (www.jacobs.com )
(714) 503-3772 (P); (714) 503-3865 (F)


----- Original Message -----
From: "Jason Kilgore" <jkilgore(--nospam--at)leok.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Thursday, October 30, 2003 11:09 AM
Subject: Re: Column located on 4" existing concrete slab


> An exterior surface supported by two columns and a beam on one side and
the
> structure on the other is technicall clasified as a "deck", and the load
> matches the load on the adjacent structure.
>
> A balcony is cantilevered without separate supports, and has higher loads.
>
> ----
> Jason Kilgore
> Leigh & O'Kane, L.L.C.
> jkilgore(--nospam--at)leok.com
> 816-444-3144
> 816-444-9655 (FAX)
>
> ----- Original Message -----
> From: Aswin Rangaswamy
> To: seaint(--nospam--at)seaint.org
> Sent: Thursday, October 30, 2003 12:33 PM
> Subject: Re: Column located on 4" existing concrete slab
>
>
> Pl. check you loading again.  If using the UBC the LL on exterior
balconies
> is 60psf
>
> Trib. area on column = 14'/2 x 4'/2 = 14 SF
>
> LL = 60 psf x 14 SF = 840 LB
>
> Generally the slab poured outside are not properly compacted and
reinforced.
> I would caution against placing on the slab.  Base plate is a good idea.
> Imagine kids (older ones) jumping up/down at the balcony!
>
> A cheaper alternative might be to use foundation blocks available at Home
> Depot.  Cut slab, dig hole, place foundation block, attach post to block -
> SIMPLE!
>
> -  Aswin
> _________________________________
> Aswin Rangaswamy, P.E.
> Structural Engineer
> Jacobs Facilities Inc. (www.jacobs.com )
> (714) 503-3772 (P); (714) 503-3865 (F)
>
> ----- Original Message -----
> From: ken kirkland
> To: seaint(--nospam--at)seaint.org
> Sent: Wednesday, October 29, 2003 4:37 PM
> Subject: Column located on 4" existing concrete slab
>
>
>
> I have a balcony size 14'x4' supported by two column.  I estimate about
700#
> D+L loads will transfer to 4x4 post.
>
> Can I place this column on top existing concrete about 4" thick?  If not,
> what is the correct procedure.
>
> TIA
>
>
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>
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