YOUNGDAHL &ASSOCIATES INC.
GEOTECHNICAL AND ENVIRONMENTAL SERVICES
Project No. 89249.1 S
3 March 1995
Moxie International
840 North 10th Street, Suite G
Sacramento, California 95814
Attention: Mr. Dennis Lee
Subject: YOUNGDAHL & ASSOCIATES, INC.,
OFFICE BUILDING
1234 Glenhaven Court
El Dorado Hills, California
CAPILLARY MOISTURE TESTING OF EXISTING CONCRETE SLAB
Reference: ASTM Test Method D 4263-83 (Reapproved 1993), Standard Test
Method for Indicating Moisture in Concrete by the Plastic Sheet Method, prepared by the American
Society for Testing and Materials.
Dear Mr. Lee:
At your request, Youngdahl & Associates, Inc. has performed a capillary moisture test
of the existing concrete slab-on-grade at our office building.
Our office building was constructed in 1990 and Moxie 1800 was used in the concrete
slab-on-grade. No visquene moisture barrier was placed below the concrete slab-on-grade.
On 23 February 1995, a moisture test was began in accordance with Reference noted above.
The test was set up in the southeast corner of the electrical control room in an attempt
to minimize damage and environmental changes. The test area was cleaned and the plastic
sheeting was placed as required by the test method.
The test was performed for over 16 hours as required without any visible moisture noted.
The test was then continued for an additional 110 hours, at which point, a heat lamp was
placed at approximately 17 inches above the plastic sheeting.
A temperature reading at the end of the test noted that the temperature directly on the
plastic sheeting under the heat lamp was approximately 106 0F. No visible
moisture was noted throughout the testing period.
The results of our testing and additional notes can be found on Table 1 below. In
addition, a copy of the ASTM Test Method D 4263-83 is enclosed.
DATE
TIME
VISIBLE MOISTURE
REMARKS/NOTES
02/23/95
10:45 am
NO
Cleaned area and set up test
02/24/95
10:45 am
NO
24 Hour Check
02/25/95
10:45 am
NO
48 Hour Check
02/27/95
10:45 am
NO
96 Hour Check
02/28/95
6:00 pm
NO
127 Hours: Set up Heat Lamp
03/02/95
6:00 pm
NO
48 Hour Check with Heat Lamp
03/03/95
12:00 pm
NO
66 Hour Check with Heat Lamp Temperature Check: 106 0F
Should you have any questions or require additional information, please contact our office
at your convenience.
Reviewed by:
Very truly yours,
YOUNGDAHL & ASSOCIATES, INC.
Dennis E. Youngdahl, P.E., G.E.
Principal Engineer
Robert M. Schumacher Staff
Engineer
1234 GLENHAVEN COURT EL DORADO HILLS, CA 95762
PHONE (916) 933-0633 FAX (916) 933-6482
We manufacture concrete admixtures,
penetrating concrete sealers, penetrating concrete floor sealers, flooring sealers, concrete
waterproofers, brick
sealers, block sealers, stucco sealers, plaster waterproofers, shotcrete
waterproofers,
gunite waterproofers, mortar sealers, concrete cleaners, and concrete repair products.
