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SETBACKS & FOOTINGS
Date By
7 TFOLUJNIDA�TIONWALLS
Date By
7 PLUMBING GROUNDWORK
Date By
5UND�ERFLD�®RRAMING
7
Date By
7- SHEAR WALLS
Date By
PLUMBING ROUGH -IN
Date By
7 =GASPIPING
Date By
MECHANICAL ROUGH-M
7
Date By
MECHANICAL (OTHER)
Date By
7FRAMING
]
Date — d Bymoombdom
70INSULATION
Date By
GWB - 1ST LAYER
Date By
7 OWB - 2ND LAYER
Date By
SUSPENDED CEILING
Date By
PLANNING FINAL
Date _ ,'31Z By r
7 ENGINEERING FINAL
Date By
=FIREAL
Date By
BUILDING FINAL
te — Q — By
7 JO�THER
Date By
7=OTHER
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CDO193
I
• ••'• '� siAry,
.a x
D
n
STATE OF WASHINGTON
WASHINGTON STATE PARKS AND RECREATION COMMISSION
1111 NE Washington Street • 2nd Floor • Olympia, Washington 98501
PO Box 42670 • Olympia, Washington 98504-2670 • (360) 902-8626
FAX (360) 902-8666 • Internet Address: http://www.parks.wa.gov
TDD (Telecommunications Device for the Deaf): (360) 664-3133
April 18, 2000
Joan Hermle
Building Division
City of Federal Way
33530 1" Way South
Federal Way, Washington 98003
Re: Building Permit #BLD97-0304
Ms. Hermle:
I was the Washington State Parks project inspector for this project. I was on the job site
several times and to the best of my knowledge it was built in accordance with the
submitted plans and specifications.
I would like to have this permit closed as soon as possible and I will wait for further
direction from your office.
1�es�gcttfully,
1 � � I
Robert G. Kirkwood, P.E.
N� 3
RECEIVED BY �onRT*A��-, ''L`�rs �•} Y,,:
APR 19, 2000 Fi(PIPE,9 8/5/ 0��,> �
"4 =-t— `04
3�4 IF69
STATE OF WASHINGTON
WASHINGTON STATE PARKS AND RECREATION COMMISSION
1111 NE Washington Street e 2nd Floor • Olympia, Washington 98501
PO Box 42670 • Olympia, Washington 98504-2670 • (360) 902-8626
FAX (360) 902-8666 i Internet Address: http://www.parks.wa.gov
TDD (Telecommunications Device for the Deaf): (360) 664-3133
Scott Sproul
Building Division
City of Federal Way
33530 1st Way South
Federal Way, Washington 98003
Re: Building Permit #BLD97-0304
Mr. Sproul:
RECEIVED BY
r-naenni wi7v nF`'^' !`iT rtiFPARTMEN�
I have enclosed the geotechnical report for the Washington State Parks culvert
replacement project at Dash Point State Park. The report recommended that quarry spalls
be used to build a base for the culvert. I can verify that that work was performed in
accordance with those recommendations and in addition geotextile was placed before the
placement of the quarry spalls. The walls were backfilled with sandy gravel, compacted
to approximatly 90% density.
I would like to have this permit closed as soon as possible and I will wait for further
direction from your office.
�F A
H.1
,i"'i E-) 8/S/co
Geoff Engineers 1
- r l�
.eN� �+
May 7, 1998 Consulting Engineers
V u' and Geoscientists
Offices in Washington,
Oregon, and Alaska
Washington State Parks and Recreation
1602 29th Street Southeast
Auburn, Washington 98002
Attention: Moya McKeehan
Report Addendum
Geotechnical Engineering Services
Box Culvert Design Criteria
Dash Point State Park Roadway
Federal Way, Washington
File No. 2935-010-00
INTRODUCTION
This report addendum presents the results of our geotechnical engineering services related
to use of a box culvert at Dash Point State Park. Our original report for this site, dated
February 12, 1993, contains our geotechnical recommendations for construction of a bridge.
We understand that a box culvert will be constructed in lieu of the previously proposed bridge.
The box culvert will be approximately 12 feet high with about 4 feet of overlying fill material.
The base of the box culvert will be approximately 161k feet below final grade.
SCOPE
The purpose of our services is to evaluate the subgrade soil and ground water conditions at
the site as a basis for providing geotechnical recommendations for the support of a concrete box
culvert. Our specific scope of services includes the following:
1. Provide recommendations for support of the box culvert.
2. Provide design recommendations for the box culvert, including lateral earth pressures.
3. Prepare a written report containing our conclusions and recommendations along with the
supporting data.
SITE CONDITIONS
GeoE! ibRFACE EXPLORATIONS
1101 Fawcet Iubsurtace conditions were explored on b p February 1, 1993 by advancing one test boring
Taco at ��anck in the vicinity of the culvert. The boring log is presented as Figure 1.
Telephone (253) 3834940
Fax (253) 9274039
www.geoengineers.com
Printed on recycled paper
Washington State Pa _' -ad Recreation
May 7, 1998
Page 2
SUBSURFACE CONDITIONS
The exploration encountered a layer of loose organic material (peat) approximately 18 feet
below existing surface elevations. This organic layer is about 3 feet thick and is underlain with
a layer of gray silt in a soft condition. The layer of soft gray silt is about 11 feet thick.
Ground water was encountered in the boring at about 20 feet below grade.
CONCLUSIONS AND RECOMMENDATIONS
GENERAL
In our opinion, the project site is suitable for the proposed structure with respect to
geotechnical considerations. We expect that the proposed box culvert can be supported on
quarry spalls extending down to the silt layer. Construction of the culvert and backfilling to
existing grade is not expected to induce significant settlement of the site soils.
Recommendations for construction and support of the culverts are discussed below.
SITE PREPARATION
We recommend that the subgrade be overexcavated to a depth of at least two feet below the
base of the box culvert and further such that all peat is removed. The soils at the base of the
foundation excavation should be disturbed as little as possible. A large excavator -type backhoe
with a smooth bucket should be used to finish the excavations. We recommend against using
equipment such as a dozer in the excavation directly on top of native soils at the base of the
overexcavation zone.
The excavation should be backfilled with quarry spalls as described in WSDOT Standard
Specifications for Road, Bridge and Municipal Construction (1996), Section 9-13.6, "Quarry
Spalls." We recommend a leveling layer of sand or top course crushed surfacing be placed
above the quarry spalls prior to placing the box culvert.
DESIGN CONSIDERATIONS
Culvert Box Support
The weight of soil removed exceeds the weight of the box culvert and overlying backfill.
As a consequence, soil bearing is not an issue.
Lateral Pressures on Subgrade Walls
We recommend that the lateral soil pressures acting on the box walls be computed using an
equivalent fluid density of 100 pcf plus a uniform pressure of 200 psf. This value assumes a
horizontal ground surface and highway legal traffic loading. Backfill adjacent to the box walls
should consist of sand or sand and gravel with less than 5 percent fines. It should be compacted
to approximately 90 percent of maximum dry density determined by ASTM D 1557.
G e o E n g i n e e r s File No. 2935-010-00
Washington State Pw__-,id Recreation
May 7, 1998
Page 3
CONSTRUCTION CONSIDERATIONS
Ground Water
Ground water was encountered at an elevation close to the proposed box culvert subgrade
elevation. The site soils are moderately to highly permeable. Some dewatering may be
necessary during excavation and backfill placement.
LIMITATIONS
We have prepared this report for Washington State Parks and Recreation for use in the
design of a portion of this project. The data and report should be provided to prospective
contractors for their bidding or estimating purposes only. Our report, conclusions and
interpretations should not be construed as a warranty of the subsurface conditions.
Variations in subsurface conditions are possible between the explorations and may also
occur with time. A contingency for unanticipated conditions should be included in the budget
and schedule. Sufficient monitoring, testing and consultation should be provided by our firm
during construction to confirm that the conditions encountered are consistent with those
indicated by the explorations and to provide recommendations for design changes should the
conditions revealed during the work differ from those anticipated. Our recommendations are
not intended to direct the contractor's methods, techniques, sequences or procedures, except as
specifically described in our report for consideration in design.
If there are any changes in the loads, grades, locations, configurations or type of structures
to be constructed, the conclusions and recommendations presented in this report may not be
fully applicable. If such changes are made, we should be given the opportunity to review our
recommendations and provide written modifications or verifications, as appropriate.
1 + ►
G e o E n g i n e e r s File No. 2935-010-00
Washington State P, _.._ end Recreation
May 7, 1998
Page 4
Within the limitations of scope, schedule and budget, our services have been executed in
accordance with generally accepted practices in this area at the time this report was prepared.
No other conditions, express or implied, should be understood.
Yours very truly,
�g L GeoEngineers, Inc.
4' o r,¢� ��Y q `d
0 -
Dennis L. Hess
24207
Gr8 Staff Engineer
pro Kati ��
EXPIRES 2 ;. D L7 � I .
Gary W."pHenderson
Principal
DLH:GWH:mw
DOCUMENT ID: 2935010R.R
G e o E n g i n e e r s File No. 2935-010-00
BORING NO. 1
R
TEST DATA
m y
C k N
5 c c 3 E Group
ID g �j c c m y N Symbol DESCRIPTION
07 2 inches aap de concrete
Brown fuze to medium said with a trace of silt (medium dense to dense,
moist) (fill)
5
10
15
25
30
35
40
30 O
4 . I SP-SM I Gray f no to medium sand with silt (very loose to loose, moist)
SM Gray silty fine to medium sand with wood debris (medium dense, moist)
12 M
5
PT Brown peat (loose, moist)
2 ■ 1 ML I Gray silt with fine sand and organic matter (very soft to soft, wet)
3
8
grades to medium stiff
SP Gray fine to medium sand with a trace of silt (medium dense, wet)
I11 0 ML Cray silt with fine sand and organic matter (stiff, wet)
See Figure 4 for explanation of symbols
Q LOG OF BORING
Geo ■En ineers
.
CIlMIRC ,
BORING NO. 1
40
45
50
55
R
w
w
Z_
= 60
tL
w
a
65
70
75
TEST DATA
m
rn ? Co �' .. °' DESCRIPTION
a
.0 H o c c c' E Group
2 v p p m y cn Symbol
See Figure 4 for expluution of symbols
i•
�sI ���• LOG OF BORING
J=Geo,900,Engm"eers
WFIGURE 1
07/08/98 MON 06:25 FAX 253 383 4923 GeoEnBineerk
la 001/001
GeoEngineers Inc.
1101 Fawcett Ave., Suite 200
Tacoma, WA 98402
Tel: (253) 383-4940
Fax: (253) 383-4923
FIELD REPORT
Zile No.
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This report presents opinions formed as a result of our observation of activilies relating to geotechnlcel engineering. We rely on the coniractortu comply with the plane and specifications
throughout the duration of the propcl irrespective of the presenc-a of our representative. Our work does not Indude supervision or direction of the actual work of the contractor, We empfoyeea or
agents. Our firm will not bo rapo+wble for Jab or silo safety on Na project.
Attachments:
Distribution: Signed:,. -,� _�