Report (26) t-// Z ( [// - 5I--
Sherman Engineering, Inc. (503) 230-8876 Ph
3 15 I NE Sandy BLVD. #100, Portland, OR 97232 (503) 226-4745 Fax
RECEIVED
MEMORANDUM OFFICE COPY
NOV 12 2015
TO: Mr. Rich Eisenhauer CITY OF TIGARD
Residential Design BUILDING DIVISION
6925 SW Netarts Ct. ,`pg�
Beaverton,OR 97007 ���G'Iti ,p c
ss 6
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DATE: November 10,2015 '
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FROM: Stig Widell,PE Ona p
Associate
EXPIRES: 6/301 19
RE: Nguyen Residence
12412 SW Autumn View Dr.
Tigard, Oregon
NOTE:
This memo is intended to inform you of our recommendations supporting the back
deck. It is our understanding that pad footings in this area could not feasible be
installed per the recommendations of Jeremy Fissel of Earth Engineers,due to the
existing soil and slop conditions. It has been proposed that pin piles be driven to
support these areas. Attached is a markup of the design vertical loads anticipated in
these locations. Manuel A. Castaneda of PLi Systems has recommended 4" sch. 80
piles driven to refusal to support these loads. Tie beam per attached detail R1 shall
be provided to laterally support the pin shown on the attached markup. Pin pile
driving criteria has been provided by Jeremy Fissel of Earth Engineers Inc.
If you have any questions please give me a call.
City of regard
ti
lans
CC: Mr. John Duncan
File-EIS 111015.doc
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McDOWELL NORTHWEST, INC. �._
PILE DRVINCG AUQERCAST•DRILLED PIER•SOLDIER PILE
PSI(PIPE)PILE•MMITA RAY EARTH ANCHORS•C-LOC VINYL.sHEETPIc.E "4 !! d
E, i
REFUSAL CRITERIA* -
FOR
PIPE PILE HYDRAULIC HAMMERS •
HAMMER WEIGHT SECONDS PER INCH
2"PIPE 3"PIPE 4" PIPE 6"PIPE
r Jack Hammer 90 lbs. 60 x x x
TB 100 150 lbs. 35-40 x x x
TB 125 400 lbs. 12-15 20-23 ( 3/;..- ) x x
TB 225 650 lbs. 8-10 14-16 18-20 x
TB 325 '1' 850 lbs. 6-8 10-12 14-16 x
TB 625 1500 lbs. x x 8-10(est.) 14-16(est.)
SPECIFICATION CHART
Model .Hammer FL Lb. Blows per: B.P.M at Oil Flow : Working I Tool
• Number ' Weight Class ' minute ; 75% Required Pressure' Diam.
(Actual) Operating gpm ' psi I Inches
Throttle
TB 100 135 lbs. 125 1000-1200 1200 4.7-5.5 1000-13001 1.57"
TB 125 400 lbs. 350 600-1200 ', 1000 5-9 1150-20001 2"
• TB 225 650 tbs. 550 ' 550-1100 : 950 7-12 1400-2150 2.3'
TB 325 850 tbs. 850 550-1100 950 ' 9-16 1400-2300. 3"
TB 625 1500 lbs. 1500 . 500-900 . 750 18-29 '1600-2400' 3.75"
PIPE SIZE O.D. WALL HAMMER SIZE "'TYPICAL PILE CAPACITY
ASSUMES 2X SAFETY FACTOR
2" 2.375" .218"sch 80 400 lb. 4-6 kps
• 3" 3.5" .216"sch 40 650 lb. 10-14 kps
4" . 4.5" .237"sch 40 850 lb. 16-20 kps
6" 6.635" .280"sch 40 1500 lb. 20-30 kps
18800 80TH PLACE SOUTH • KENT, WA 98032 • (425) 251-8570 • FAX (425) 251-8628 • PORTLAND, OR (503) 283-8920
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McDowell NW Pile Kiing, Inc,
REFUSAL CRITERIA* FOR
PIPE PILE HYDRAULIC HAMMERS
"Defined as less than 1"of penetration in"X"seconds
HAMMER WEIGHT SECONDS PER INCH
2"PIPE 3" PIPE 4" PIPE 6" PIPE
(pneumatic)
Jack Hammer 90 lbs. 60
Hydraulic
TB 100 135 lbs. 135-40
• Hydraulic
TB 125 400 lbs. 12-15 20-23
Hydraulic
TB 225 650 lbs. 8-10 I 14-16 18-20
Hydraulic -----
TB 325 _ 850 lbs. 6-8 10-12 I 14-16
Hydraulic
T8425 1100Ibs. 6-8 10-12 18-20
Hydraulic ----------
TB 625 1500 lbs. 6-8 8-10 16-20
SPECIFICATION CHART
Model Hammer Ft. Lb. Blows per B.P.M at Oil Flow Working Tool
Number Weight Class i minute 75% Required Pressure Diam.
(Actual) I Operating gpm psi Inches
.. Throttle
TB 100 135 lbs. 125 1000-1200 1200 4.7-5.5 1000-1300 1.57"
TB 125 400 lbs. 350 600-1200 1000 5-9 1150-2000 2"
1-8 225 650 lbs. 550 550-1100 950 7-12 1400-2150 2.3"
TB 325 850 lbs. 850 550-1100 950 9-16 1400-2300 3"
TB 425 1100 lbs. 1100 lbs, 550-1100 950 12-21 1400-2300 3.75"
TB 625 1500 lbs. 1500 500-900 750 18-29 1600-2400 3.75"
PIPE SIZE 0.0. WALL HAMMER SIZE *TYPICAL PILE CAPACITY
ASSUMES 2X SAFETY FACTOR
2" 2.375" .218"sch 80 400 lb. 4-6 kps
3" 3.5" .216"sch 40 650 lb. 10-14 kps
• 4" 4.5" .237"sch 40 850 lb. 16-20 kps
6" 6.625" .280"sch 40 1500 lb. 20-30 kps
•
RUNNING WALLS•PIN(PIPE)PILE• MANTA RAY EARTH ANCHORS• C-LOC VINYL SHEETP!LE
SHIP TO:18905 84th Avenue S. • Kent,WA 98032 • (425)251-8535 • Fax(425)251-5940
REMIT TO:18800 80th Place S. • Kern,WA 98032 • (425)251-8570 • Fax(425)251.8628