Part I: Types of Cracks and Their Causes 

Excellent presentation, every builder should watch.

I love this presentation. Great job, really professional. Thank you for shearing :)

Every contractor should watch these 'tapes'.

nice lecture . i hope u will upload more of those

great job plz we need more of these interesting topics

good information. thanks for sharing the presentation.

It is wonder he didn't begin with ' Hi, I'm Rod Sterling, and I am here to present this weeks' edition of the Twilight Zone; Cracks and their Causes'.

Why didn't we have people like this teaching at schools!

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