View Single Post
  #73  
Old Posted Apr 11, 2017, 4:46 PM
xnyr xnyr is offline
Registered User
 
Join Date: Jun 2006
Location: Portland, OR
Posts: 354
Quote:
Originally Posted by mmeade View Post
The blue things are threaded to hold a threaded rod that can be screwed in later. These can be to support pipes hanging below, or sometimes temporary fall protection.

In a Post Tensioned slab it is difficult to fasten anything deeper than 3/4" into the slab, so larger mounts are prepared in advance.

https://www.isatsb.com/blue-banger-hanger-pip.php
Makes perfect sense.. thanks for solving that mystery for me!
Reply With Quote