Replies

1. 
   MarkCadioli | Jul 14, 2002 02:53am | #1

   Blow out the hole with compressed air. Place your conduit and seal with one of the polyurethane sealants. Sikaflex would be my personal choice.

   http://www.quittintime.com
1. 
   EdMayer | Jul 14, 2002 05:25am | #2

   Thank you for the reply, Ed.

1. 
   junkhound | Jul 14, 2002 05:48am | #3

   or smply mix a stiff cement paste grout and trowel it in.

1. 
   MarkCadioli | Jul 14, 2002 08:38am | #4

   Cement paste has a high shrinkage rate..you will be allowing the possibilities of water access.regards

   Mark

   http://www.quittintime.com

1. 
   4Lorn1 | Jul 14, 2002 11:01am | #5

   In an industrial setting they sometimes use a rubber boot, similar to an automotive CV boot, that is bolted to the wall with a flange and to the pipe with a sleeve. The pipe is run through an oversized hole to prevent binding and has a flexible joint inside the wall to prevent breakage. These units are not cheap but provide a reliable seal even under water and allow 10, or so degrees of lateral movement and several inches in the axial direction. These are available for pipe sizes from 1/2" to well over 2'. An extreme solution that assures a seal even with lots of ground movement as with floating foundations and clay fills.

2. 
   CloudHidden | Jul 15, 2002 02:48am | #7

   Would hydraulic cement make a difference?

3. 
   junkhound | Jul 15, 2002 03:38am | #8

   re:shrinkage:Stiff mix a must if using cement to seal. 

   Minuteman silos & LCCs (80 ft water head) used only grout to seal - granted, the seal also included a non-pourous weld to the 1/2" steel liner.

4. 
   EdMayer | Jul 15, 2002 03:50am | #9

   Thanks for all your replies, I appreciate it, Ed.

2. 
   Wolvie | Jul 15, 2002 12:41am | #6

   you have Sikaflex in Aussie land? Wow - yer moving up in the world! ;-)Woe to the cook whose sauce has no sting- Chaucer