Need a book? Engineering books recommendations...

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

Re: CMU California Practice in the 1950's

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Sorry if this is repetetively redundant by now--tried to send on Monday, but was having list issues.  Have not seen other comments on "sounding" CMU walls to find un-grouted vs. grouted cells.
 
 
*********************************
        ---Original Message---
*********************************
Harold,
 
You can tell by "sounding" the wall which cells are grouted.  Tap the wall with a hammer--the grouted cells sound very different than the ungrouted ones.   Note:  If you're not on site, this method doesn't help you much....
 
I inspected a CMU addition in Lompoc built in the 50s or 60s and it was only grouted where the reinforcing was.
 
One reason solid-grouting became common is that it's less labor-intensive than blocking off the cells below your horizontal reinforcement--plus you can do high-lift grouting instead of having to grout every horizontal rebar course before continuing to lay block.  If you're using ready-mix trucks, you only bring them in once for grouting when the wall is topped out.
 
Best wishes,
 
Thor Matteson