Report 11/30/00 THU 11:31 FAX 503 670 9147 CARLSON TESTING I 001
Carlson Geotechnical. D B o x lice Salem d5OnA
Hu Bend Office
P.O. B ox 23814 4060 Hudson Ave., NE P.O. Box 7915
A Division of Carlson Testing, Inc. Tigard, Oregon 97281 Salem, OR 97301 Bend, OR 97708
Geotechnlcal Consuiting Phone (503) 684 -3460 Phone (503) 589 -1252 Phone (541) 330 -9155
Construction Inspection and Related Tests FAX (503) 670 -9147 FAX (503) 589.1309 FAX (541) 330 -9163
CGT No. G0001565.A 143 j o -- 00 . 9 2 4
Permit No.
/O/ 55 sW 877 VE_
FIELD OBSERVATION REPORT
DATES COVERED! November 29, 2000
PROJECT: Maple Ridge Subdivision
ADDRESS: SW Locust Street & 87 Avenue – Tigard, OR
8Y: W. Sandino
WEATHER' Warm and cloudy
PURPOSE OF VISIT: Construction Observation
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•
I arrived on site at 0830 on November 29, 2000 at the request of Dale Richards of Windwood Homes. At
the time of my arrival, the contractor had excavated lots 1 to 6 to subgrade elevation. The subgrade of
lots 1 to 6 to consist of native silty and silty gravelly soils. The contractor showed me where the footings
where going to be located and I observed the subgrade conditions in these areas. I probed the footing
subgrade of lots 1 to 6 with a Y2 steel probe rod at intervals, and was unable to penetrate more than
about 4 inches in any location. According to a conversation with Dale, I understand that he intends to
form the footings directly on top of the existing subgrade, and backfill a minimum of 18 inches on the
exterior footing wall. He will provide insulation on the inside of the footings. In addition, while the
perimeter footings will be less than the 18 inches that we recommended in our report of July 14, 2000, we
understand that the design bearing pressures do not exceed those given in that same report. Based on
our understanding of the planned building loads and intended construction, we conclude that the above
changes are in accordance with the intent of our recommendations, and therefore, based on my
observations and probing the subgrades observed today have been prepared in general accordance with
our recommendations.
Left the site at 0930.
iat'eal/ /1/6-/-6.6
W stun Sandino Re sewed by. JMN
Geotechnical Staff
Note: Our reports pertain to the locations observed at the time of our visit only Information contained
herein is not to be reproduced, except in full, without prior authorization from this office.
Attachment: Site plan
Distribution: Windwood Homes - Dale Richards – Fax: 625 -1756
Kurahashi & Associates – Greg Kurahashi - Fax: 644 -9731
City of Tigard Building Dept. – Brian Regure – Fax: 684 -7297