Return to index: [Subject] [Thread] [Date] [Author]

RE: Crack Control Joints - Unreinforced Slab on Grade

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Designing Floor Slabs On Grade by Ringo and Anderson references PCA
Concrete Floors on Ground. The PCA guide recommends joint spacing (in feet)
to be 2 to 3 slab thickness (in inches) for plain concrete.

Jim K.

-----Original Message-----
From:	Bill Polhemus [SMTP:bill(--nospam--at)polhemus.cc]
Sent:	Monday, February 04, 2002 10:43 AM
To:	seaint(--nospam--at)seaint.org
Subject:	Crack Control Joints - Unreinforced Slab on Grade

I've got to design an unreinforced slab on grade for a nightclub. The
"unreinforced" part is the owner's requirement; the mall in which the
nightclub is being built uses unreinforced concrete throughout. The slab
I'm
in charge of is about 160' X 120', with 40' square construction pours.

I'm debating what sorts of measures to take to ensure the slab doesn't
crack
(it will be exposed over about half the surface area, with some sort of
clear seal applied). I was thinking of using synthetic fibers but am not
sure if that would create a problem with application of the clear seal.

Also, I'm contemplating control joints at 20' (quartering the pour panels),
but see very little in the way of guidelines for control joint spacings in
the literature.

Does anyone have any enlightenment to share?


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
*
*   This email was sent to you via Structural Engineers
*   Association of Southern California (SEAOSC) server. To
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you
*   send to the list is public domain and may be re-posted
*   without your permission. Make sure you visit our web
*   site at: http://www.seaint.org
******* ****** ****** ****** ******* ****** ****** ********


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
*
*   This email was sent to you via Structural Engineers
*   Association of Southern California (SEAOSC) server. To
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you
*   send to the list is public domain and may be re-posted
*   without your permission. Make sure you visit our web
*   site at: http://www.seaint.org
******* ****** ****** ****** ******* ****** ****** ********