Correspondence 4
i:vot ts
December 9, 1997 .44L Ili
Nicoli Engineering CITY OF TIGARD
PO Box 23784 OREGON
Tigard, OR 97281
Attn: Jim Andrews
RE: Pacific Car Wash Site Plan Review
12390 SW Scholls Ferry
PC #: 12 -08c SIT #: 97 -0044
Submittal documents for the above referenced project have been reviewed for
conformance with the applicable 1996 Oregon Specialty Codes and other applicable
codes and standards. The following comments are noted: •
SITE WORK
1. Water Quality Facility observation by Engineer of record.
iiy
At) Under the provisions , , ow
A 'lb Engineer of record responsible of OSSC for the Section design 1702 and (4)the specifications ner shall of the employ Water
,
Quality Facility, to perform construction and visual observation of the Water
Quality Facility for compliance of the design and specifications, at significant
stages, and at completion of the construction.
Prior to final occupancy approval of the construction under permit for the site, the
Engineer of record shall provide the City of Tigard, "Attention Plans Examiner"
with written confirmation that the Water Quality Facility is in compliance with the
design and specifications of same.
2. In Seismic Zone 3, the potential for seismically induced soil liquefaction and soil
instability shall be evaluated (OSSC, Section 1804.2).
9 4c e.P 5/1 A. Provide a Geotech report addressing the requirements of OSSC, Section
1804.5.
3. No building shall be constructed, altered, enlarged, moved or repaired in a
manner that by reason of size, type of construction, number of stories,
V .-. occupancy or any combination thereof, creates a need for a fire flow in excess of
3,000 gallons per minute at 20 psi residual or exceeds the available fire flow at
the site of the structure [UFC, Section 903.3].
A. Provide Fire Flow Testing pursuant to NFPA 291 using the enclosed
"Hydrant Flow Test Report Form."
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
t •
,. Pacific Car Wash Site Plan Review
' PC#: 12-08c SIT#: 97-0044
Page #2
B. Complete the enclosed "Fire Flow Work Sheet" and forward to: City of
Tigard, Attn: Plans Examiner, 13125 SW Hall Boulevard, Tigard, OR
97223
Note: These documents shall be on file before a building permit will be issued.
Please submit two copies of revised submittal documents and a letter indicating your
response to the above comments for review. Please call me at (503) 639 -4171 if you
have any questions.
Sincerely,
D-oof —
Ro ert Poskin, CBO
PLANS EXAMINER
•
•
•
•
Ti . S 1-1.• C'P- °o
. 7s3
1 Scu S cik.•g-s
Job No. 97-G1469
Pacific Car Wash
City of Tigard, Oregon
maximization of bearing capacity and protection against frost heave, spread footings should be
embedded at a minimum depth of 12 inches below exterior grades on level ground. We
recommend that the allowable soil bearing capacity be taken as 2,000 lbs/ft 2 for spread footings
bearing on stiff native soil. The coefficient of friction between fill and poured -in -place concrete
may be taken as 0.35. Maximum anticipated total and differential footing movements (generally
from soil expansion and /or settlement) are 1 inch and ' inch over a span of 20 feet, respectively.
1 tilities
All deep excavations and shoring should conform to Occupational Safety and Heath Administration
(OSHA) regulations (29 CFR Part 1926). Earth materials at the site are OSHA "Type B" soils, and
the walls of temporary construction trenches are expected to stand vertical with only minor
I sloughing during construction. PVC pipe should be installed in accordance with ASTM D2321
procedures. Utility trenches parallel to foundations should be located outside of a 1 H:1 V plane
extending downward from the outer face of foundation footings.
I We recommend that structural trench backfill be compacted to a minimum of 90% of the
maximum dry density obtained from AASHTO T -180 or equivalent. Initial backfill lift thicknesses f
1 for a 3 /4 " -0 crushed aggregate base may need to be as g reat as 4 feet to reduce the risk of
flattening flexible pipe. Subsequent lift thicknesses should not exceed 1 foot. If manufactured I
granular fill material is used, then lifts for large vibrating plate type compaction equipment (e.g. hoe )
1 compactor attachments) may be up to 2 feet, provided that proper compaction is being achieved
and each lift is tested. Use of large reverberating compaction equipment near existing buildings I
and improvements should be carefully monitored for possible vibration - induced damage. Typicall y, f
1 density tests are taken at about every 4 vertical feet for every 200 lineal feet of trench backfill.
Seismic Design )
r
The subject site lies within UBC Seismic Zone 3. We recommend that structures be designed for
UBC Seismic Zone 3 which corresponds to a peak bedrock acceleration of 0.3 g. Based on the
available information, the UBC soil profile that best characterizes the site is "S ".
Foundation perimeter drains are recommended for the subject site. Perimeter drains should consist
of a minimum 3- inch - diameter, perforated or slotted Schedule 40 plastic pipe enveloped in a
minimum of 1 ft per linear foot of drain rock wrapped with Amoco 4545 geofabric filter or
equivalent. Drain rock shall consist of open graded gravel with maximum a dimension of 2 inches
and a minimum dimension of %2 inch. A minimum of one -half percent fall should be maintained
throughout the drain and non - perforated pipe outlet.
All surface water drainage should be directed away from foundations, improvements, and utility
trenches.
Page 5
12/29/97 i6:25 $303 620 2066 NICOLI ENG. , Inc. LU
CITY OF TIGA D, OREGON - .
Hydrant Flow Test Report
Location: _ la 39 a 6.b:_, *t•w a?.a !:- r ta2•Y
Test Conducted 8y: C A u r A S � /- y T ime 9 66 6—
Representative of:
State purpose of tee
Corrsumpdon rate drag use Pumps used in test Yds ( ) No ( ) How many:
$ydrant Rows` All Alt A/3
Nozzle Sire: Li. 5 Picot wading: l 5 Discharge Coemciesi gpm `
Stack B Residual: B '
Projected nests 20 psi residual S7 m or C Rpsi Residual___ Winn
Remariec
Location ation map: best= and &same fl3 net atm coaae d ft. Shaw v2Ivn sad b dram branch
Ind mom). . g'ic & iia h - Lands M -A/2 -N3 M4.6hoWIOCIZiOU d sortie and res dosl -Ltbei
"8"
Submit this form toy t. ". M : ;I... Review.
fr
HAI Blvd., Tikard Qr au 97223 - (5031 639.4471
•
•
��
� ~~ ��� ST������������[ -
...1 M ' '-�' _- - --_
Hydrant Outlet I'[. �t�mt Prmss' Flow Ras1uuel Thma, ___ Cont, w.
1 N u^ Inches Pmt gpr= poI v
...1. " ------ U*� -�t� Coot ��am`m�
CO > 1 �� , 5 3 , ~ ` = .� ' : ' - -----
(1) ' Address; _____________________ _
al ~ �� � __. -- __-_' -' -_ . _-_-
7:3 u '----------- --------
r� _--- -_-_-_- -�����
'� ot a\ F l o w . �`utiv Press: . -- -- , ' - ' _ ..1 VI. �
r---- z /2m
~
115 -• irm_ _
90 rum 1 . 1 isyt -
• 80 — 7,11111 ( . le-;(09. (--. iC) f.5".i; -..:.
' ^5
,o
— 557.. il — .- ______t _
_--__ 40_.::
'-__-_ 35-
-
■ ---- 30 ----_ ----------'---'' '------- INC. ------
- _-__� �5 -J � - _---_. .-_'____ ____�___ _
- /
- ---- _ 20 —�-- `-- .------------------ - —
. Scale: _.~_
--- l� ' �----'--- - '
' -~-_-___-_-___-_-_--' __--_--__. ' __--_ - - --_-_
---- )O - � ----- - � ��IR�� I ' _ _ _ -__^- -__--__�/
| -----' 5 ~~~~�~ - -- ---------� -- U
/V " �NNN�����N x��.���l`�»xu ���J��1�_K�k ' ' �J�_x ��L__k��_L �|Uio��� |x nX�v��k.8��{���y/ , �����|/nv»x��lp� ^ i �
' -----__'-_--- u-- - --� 600 �mu -«*m -------�
��� � --- m`/"-*_'_---�*w-2on---�«»---'--4»«'-~---'ur»« - - • • ' '- / �no — '---' ��nm ' -- —'---- -----� �n��� - ��� 2006
• x,,/, B 200 �uu am BOO z«w' � �ow 2600 3200 . 3600 -- --WOO-
� ` �w�° C � -�aoo ' uv^"�' _ _ .�