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Re: Vibration Problem

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If your are looking for a book on vibrations, get a copy of Construction
Vibrations, by Charles H. Dowing published by Prentice Hall, 1996.
It is unlikely that earthwork at a distance of several hundred feet would
casue cracking in CMUs, unless blasting was involved.

John Schenne, PE
Schenne & Associates
----- Original Message -----
From: "David Compton" <dcompton(--nospam--at)>
To: "Seaoc List" <seaint(--nospam--at)>
Sent: Thursday, January 24, 2002 7:47 PM
Subject: Vibration Problem

> Hi All,
> I could use some help.  I am investigating a single family home in Florida
> constructed of masonry block with monolithic slab-on-grade.  The structure
> has cracking of the block along the rear of the home.  Hand Augurs, SPT
> Borings, GPR all show nothing. I am at a loss for a cause, expect for a
> shot.  Around the time the cracks started showing up, some heavy
> construction (I believe earth work) was going on about 200' to 300' to the
> rear of the structure.  No vibration monitoring was conducted at the time
> the construction.  Is it possible that the construction could of caused
> cracking, and is there any reading material available on the subject that
> might help me. Thanks in advance.
> David L Compton, PE
> Urbaneering, Inc.
> Civil Engineering & Inspection Services
> Office 813-948-8360
> Cell 813-766-7649
> dcompton(--nospam--at)

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