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| crhras 2006-06-26, 1:25 pm |
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What is the purpose of "rubber flashing" which is placed just below the
first course of bricks ? I also see this same flashing on top of the last
course of bricks just below the lentil.
Thanks,
Curt
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| longshot 2006-06-26, 1:25 pm |
| expansion which reduces the cracking
"crhras" <crhras@sbcglobal.net> wrote in message
news:qGSng.53646$fb2.53583@newssvr27.news.prodigy.net...
>
> What is the purpose of "rubber flashing" which is placed just below the
> first course of bricks ? I also see this same flashing on top of the last
> course of bricks just below the lentil.
>
> Thanks,
> Curt
>
>
>
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| crhras 2006-06-26, 1:25 pm |
|
So the bricks are allowed to slide a bit ?
"longshot" <longshot@aol.com> wrote in message
news:WXSng.4716$il.1412@trnddc03...
> expansion which reduces the cracking
>
> "crhras" <crhras@sbcglobal.net> wrote in message
> news:qGSng.53646$fb2.53583@newssvr27.news.prodigy.net...
>
>
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| longshot 2006-06-26, 1:25 pm |
| i dont know about sliding so much expanding & contracting....
"crhras" <crhras@sbcglobal.net> wrote in message
news:TBTng.29004$VE1.28178@newssvr14.news.prodigy.com...
>
> So the bricks are allowed to slide a bit ?
>
> "longshot" <longshot@aol.com> wrote in message
> news:WXSng.4716$il.1412@trnddc03...
>
>
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|
| Point of interest: I relieved pressure on a brick wall some years
ago from expansion. This wall was 300' long with no expansion
joints or openings. It rested on a wall that went on down to the
ground about 50' long on one end and 75' on the other end. The
center was supported on steel with steel columns and was the
entrance to parking under the main floor That wall built enough
pressure to shear the support joints on either end and slid 2" on
the short end and 1" on the other a total of 3" expansion. How
much pressure that would take I have NO idea. Must have really
popped when it first broke loose.
Anyway when we set up a saw on the wall in 3 places and cut out
vertical slivers to give it room, even then we had trouble because
it would close up on the saw the pressure was so great. The 3"
still hadn't relieved its pressure. Someone forgot to tell it was
supposed to expand AND contract. 
"longshot" <longshot@aol.com> wrote in message
news:M1Ung.7270$Tk.159@trnddc08[color=darkred]
>i dont know about sliding so much expanding &
>contracting....
> "crhras" <crhras@sbcglobal.net> wrote in message
> news:TBTng.29004$VE1.28178@newssvr14.news.prodigy.com...
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| clintonG 2006-06-26, 1:25 pm |
| The purpose of the rubberized membrane is to provide a thermal break.
The rubber membrane has nothing to do with expansion control. Think about
this for a moment as it is a real stretch of physics to suggest thousands of
pounds of brick bearing on a steel member seperated by nothing more than a
thin rubberized membrane provides any type of properties other than which it
has been intended to provide; a thermal break which helps reduce
condensation in the wall cavity.
<%= Clinton Gallagher
NET csgallagher AT metromilwaukee.com
URL http://www.metromilwaukee.com/clintongallagher/
"Glenn" <pilcheg@kc.rr.com> wrote in message
news:lIUng.1491$ss4.385@tornado.rdc-kc.rr.com...
> Point of interest: I relieved pressure on a brick wall some years ago
> from expansion. This wall was 300' long with no expansion joints or
> openings. It rested on a wall that went on down to the ground about 50'
> long on one end and 75' on the other end. The center was supported on
> steel with steel columns and was the entrance to parking under the main
> floor That wall built enough pressure to shear the support joints on
> either end and slid 2" on the short end and 1" on the other a total of 3"
> expansion. How much pressure that would take I have NO idea. Must have
> really popped when it first broke loose.
>
> Anyway when we set up a saw on the wall in 3 places and cut out vertical
> slivers to give it room, even then we had trouble because it would close
> up on the saw the pressure was so great. The 3" still hadn't relieved its
> pressure. Someone forgot to tell it was supposed to expand AND contract.
>
>
>
>
> "longshot" <longshot@aol.com> wrote in message
> news:M1Ung.7270$Tk.159@trnddc08
>
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| rustyjames 2006-06-26, 5:25 pm |
|
clintonG wrote:[color=darkred]
> The purpose of the rubberized membrane is to provide a thermal break.
>
> The rubber membrane has nothing to do with expansion control. Think about
> this for a moment as it is a real stretch of physics to suggest thousands of
> pounds of brick bearing on a steel member seperated by nothing more than a
> thin rubberized membrane provides any type of properties other than which it
> has been intended to provide; a thermal break which helps reduce
> condensation in the wall cavity.
>
> <%= Clinton Gallagher
> NET csgallagher AT metromilwaukee.com
> URL http://www.metromilwaukee.com/clintongallagher/
>
>
> "Glenn" <pilcheg@kc.rr.com> wrote in message
> news:lIUng.1491$ss4.385@tornado.rdc-kc.rr.com...
It's my understanding that it's part of a drainage plane behind the
brick to relieve trapped water/condensation to the weep holes that
should be placed in the wall.
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| tbasc@bellsouth.net 2006-06-26, 8:25 pm |
|
crhras wrote:
> What is the purpose of "rubber flashing" which is placed just below the
> first course of bricks ? I also see this same flashing on top of the last
> course of bricks just below the lentil.
>
> Thanks,
> Curt
Look at the BIA (Brick Industry Association) web site.
The Tech Notes section includes flashing.
TB
It's not a legume, it's a lintel.
T ;)
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| crhras 2006-06-29, 9:26 am |
| Lentil/Lintel
Ha, I knew I had it wrong. Thanks for correcting me.
<tbasc@bellsouth.net> wrote in message
news:1151370731.974067.280320@c74g2000cwc.googlegroups.com...
>
> crhras wrote:
>
> Look at the BIA (Brick Industry Association) web site.
> The Tech Notes section includes flashing.
> TB
>
> It's not a legume, it's a lintel.
> T ;)
>
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crhras wrote:
> What is the purpose of "rubber flashing" which is placed just below the
> first course of bricks ? I also see this same flashing on top of the last
> course of bricks just below the lentil.
>
> Thanks,
> Curt
DPC?
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| crhras 2006-06-29, 9:26 am |
| What's that ?
"Phil" <philip_barton.geo@yahoo.com> wrote in message
news:1151399574.272789.83070@b68g2000cwa.googlegroups.com...
>
> crhras wrote:
>
> DPC?
>
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| RicodJour 2006-06-29, 9:26 am |
| longshot wrote:
>
> "crhras" <crhras@sbcglobal.net> wrote in message
> expansion which reduces the cracking
Which direction would that allow the brick to move? Up? Expansion
joints in brickwork are breaks in the brick bond with no mortar - the
gaps are caulked.
The flashing the OP is wondering about is a damproofing course.
http://www.pavingexpert.com/dpc01.htm
R
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crhras wrote:[color=darkred]
> What's that ?
>
> "Phil" <philip_barton.geo@yahoo.com> wrote in message
> news:1151399574.272789.83070@b68g2000cwa.googlegroups.com...
DPC Damp Proofing Course
or
DPM Damp Proof Membrane
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