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RE: Masonry Question

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Non-engineers always know more than engineers because they are "practical."

-----Original Message-----
From: seaint-seaosc(--nospam--at) [mailto:seaint-seaosc(--nospam--at)] On 
Behalf Of Andrew Kester Sent: Wednesday, June 04, 2014 9:23 AM
To: seaint-seaosc(--nospam--at)
Subject: Re: [SEAINT-SEAOSC] Masonry Question

You guys haven't heard about all the mortar bond related failures of CMU 
retaining walls lately?

That is just ridiculous. What's the mortar doing anyway in a retaining wall, 
 passing the compressive stress along between blocks? Slow day at the planning 

On Tue, Jun 3, 2014 at 11:17 PM, Lloyd Pack, P.E. < lloyd(--nospam--at)> 

> Tarek,
> This seems odd to me.
> Type M mortar has the strongest compressive strength at a 28 day
> strength of 2900 psi, minimum.  While Type S mortar has a compressive
> strength of 2100 psi, minimum.
> The mix ratios for the different types are as follows:
> Type M: 1 Portland Cement, 1/4 Lime, 3.5 Sand Type S: 1 Portland

Truncated 459 characters in the previous message to save energy.

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