20-101886-Site Plan-05-11-2020-V1FOUNDATION PLANS-2SHEETPROJECT NAME
DRAWN BY
CHECKED BY -
SHEET DATE DESCRIPTIONSCALE
REVISIONS
DESCRIPTION DATE BY
MRT
-
2
PROJECT NUMBER
2 of 20NOTES:
a. MINIMUM AND MAXIMUM INSTALLATION TORQUE FOR THE PILE ASSEMBLY SHALL BE SPECIFIED BY THE
PILE MANUFACTURER. THE MINIMUM INSTALLATION TORQUE SHALL BE HIGH ENOUGH TO ACHIEVE THE
REQUIRED BEARING CAPACITY LOADING INCLUDING A SAFETY FACTOR NO LESS THAN 2. THE MAXIMUM
INSTALLATION TORQUE SHALL NOT EXCEED THE ALLOWABLE TORSIONAL CAPACITY OF THE PILE SHAFTS
OR ANY PART OF THE PILE ASSEMBLY. MAXIMUM INSTALLATION TORQUE RATING OF 8300FT*LBS FOR A
2-7/8 INCH DIAMETER HELICAL PILE WITH 0.203 INCH SHAFT WALL THICKNESS PER ESR-3750.
b. TYP EXTERIOR TO DENOTE PILE INSTALLATION AT EXISTING EXTERIOR CONCRETE FOUNDATION WITH
MINIMUM DIMENSIONS PER PLAN NOTES
c. HELICAL PILES AS MANUFACTURED BY IDEAL MANUFACTURING, INC., IN ACCORDANCE WITH ESR-3750
WITH 2-7/8 INCH MINIMUM SHAFT DIAMETER AND 0.203 INCH MINIMUM WALL THICKNESS.
d. PILE LOADS NOT TO EXCEED MAXIMUM PILE LOAD CAPACITY AS DETERMINED BY THE MANUFACTURER
FOR ANY PART OF PILE ASSEMBLY. MAXIMUM ALLOWABLE COMPRESSION CAPACITY OF 37.4 KIPS FOR A
2-7/8 INCH DIAMETER HELICAL PILE WITH 0.203 INCH SHAFT WALL THICKNESS PER ESR-3750.
e. MAXIMUM ON-CENTER SPACING LISTED FOR TYPICAL PILE INSTALLATION UNLESS NOTED OTHERWISE ON
PLAN.
SITE & FOUNDATION PLANNOTE: THE PROJECT WILL NOT RESULT IN CHANGING OF SITE TOPOGRAPHY OR EXISTING DEVELOPED AREAS.
FOUNDATION NOTES
SITE PLAN LEGEND
EXISTING RESIDENCE STRUCTURE
EXISTING ADJACENT STRUCTURE
AREA OF PROPOSED WORK
PROPERTY LINE
* APPROXIMATE DIMENSION
S200303-1
ZT
5/3/2020
1. VERIFY ALL DIMENSIONS ON SITE.
2. FOUNDATION DIMENSIONS ARE TO OUTSIDE FACE OF CONCRETE STEM WALL
PER R&R LEVEL SURVEY.
3. REFER TO STRUCTURAL CALCULATIONS PACKAGE DATED MAY 3RD, 2020,
FOR ADDITIONAL INFORMATION, SPECIFICATIONS, AND REQUIREMENTS.
4. LEVEL SURVEY PER R&R REPAIR PLAN DATED MARCH 2ND, 2020. REFER
TO STRUCTURAL CALCULATIONS PACKAGE FOR MODIFICATIONS AND
ADDITIONAL REQUIREMENTS FOR REPAIR PLAN.
5. MINIMUM PILE DIAMETER SHALL BE 2-7/8”.
6. IT IS ACCEPTABLE TO INSTALL PILES AT THE SPACING SHOWN WITH ± 0'-6"
TOLERANCE TO ALLOW FOR UNEXPECTED OBSTRUCTIONS ENCOUNTERED
DURING PILE INSTALLATION PROVIDED THAT NO TWO ADJACENT SPANS
EXCEED THE SPACING LIMITATION OF 8'-0"O.C. MAXIMUM.
7. ALL SUPPLEMENTAL CHANNELS TO SPAN FROM PILE TO PILE AND EXTEND
MIN 6" PAST SUPPORTING PILE EA END.
8. ALL SUPPLEMENTAL CHANNELS TO BE ANCHORED TO THE FOUNDATION WITH
5/8" DIAM. SIMPSON TITEN HD SCREW ANCHORS (OR APPROVED EQUIVALENT)
AT A MAXIMUM SPACING 12"OC WITH A MIN 4-1/2" EMBEDMENT. ANCHORS TO
BE CENTERED ON OR INSTALLED ABOVE THE CENTER LINE OF THE CHANNEL.
9. FIELD VERIFY ALL EXISTING STEM WALLS AT AND BETWEEN PILE
ATTACHMENT LOCATIONS ARE 8" THICK MINIMUM WITH 2'-8" HEIGHT
(MEASURED FROM B/FTG TO T/CONC) MINIMUM.
10. PARCEL DIMENSIONS PROVIDED BY KING COUNTY. NOT TO SCALE.
PROPERTY LINE AND RESIDENCE LOCATING DIMENSIONS (WITH ASTERISK, *)
APPROXIMATED PER KING COUNTY GIS MAPPING TOOLS. NOT TO BE
USED FOR LEGAL PURPOSES.
11. SITE FEATURES AND EXISTING STRUCTURES ON ADJACENT PARCELS NOT
SHOWN FOR CLARITY.
12. PILES SHALL BE INSTALLED TO A MINIMUM EMBEDMENT OF 5'-0".
HELICAL PILE REFUSAL CRITERIA:
TORQUING OF THE PILE SHALL CONTINUE UNTIL A HYDRAULIC PRESSURE IS
ACHIEVED TO PROVIDE THE SPECIFIED MINIMUM VERTICAL CAPACITY WITH A
SAFETY FACTOR OF NO LESS THAN TWO. ADVANCEMENT SHALL BE HALTED
IMMEDIATELY IF THE STRUCTURE BEGINS TO EXPERIENCE UPLIFT FLEXURE.
PROOF TESTING:
THE CAPACITY OF THE INSTALLED PILES SHALL BE VERIFIED BY FIELD TESTING
OF A MINIMUM THREE (3) PERCENT OF PILES UP TO FIVE (5) PILES MAXIMUM
(ONE (1) MINIMUM) IN ACCORDANCE WITH THE PROCEDURE OUTLINED IN ASTM
D1143 AND/OR THE 2015 SEATTLE BUILDING CODE (SBC). THE MAXIMUM TEST
LOAD SHALL BE TWO-HUNDRED (200) PERCENT OF THE SPECIFIED DESIGN
LOAD.
4021 SW 321ST ST
FEDERAL WAY, WA
98023
R&R LEVEL SURVEY
See Structural Calculation Package for Additional Requirements
RESIDENCE
4021 SW 321ST ST
FEDERAL WAY, WA 98023 DRIVEWAYACCESSPRIMARYACCESS76'-0" *
PROPE
R
T
Y
L
I
N
EPROPERTY LINE107'-0" *119'-0" *PROPERTY LINE78'-0" *
PROPERTY LINE
(E) DECK
63'-0"34'-0"23'-0"
3'-0"
5'-0"
14'-6"20'-0"22'-0"12'-0"SW 321ST ST
4027 SW 321ST ST
FEDERAL WAY, WA 98023
4017 SW 321ST ST
FEDERAL WAY, WA 98023
PARCEL NO.
873190-2310
LEGAL DESCRIPTION
TWIN LAKES # 2 230 LESS POR LY
NELY OF LN BEG 4 FT N OF MOST
ELY COR TH SWLY TO MOST SLY
COR & THE TERMINUS OF SD LN
& ALL 231
PLat Block:
Plat Lot: 230-231
OWNER NAME & ADDRESS
BABCOCK MARALYN C
4021 SW 321ST ST 98023
AREA OF WORK
RECEIVED
CITY OF FEDERAL WAY
COMMUNITY DEVELOPMENT
May 14 2020
20-101886-Site Plan-05-11-2020-V1