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DEVELOPMENT ENGINEERING
' SAMorman 07/05/2024
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TALBOT HILL ELEMENTARY SCHOOL
A PORTION OF THE NE 1/4 OF THE NE 1/4 OF SEC. 30, TWNm 23 N.,
RGEm 05 E. W.M. CITY OF RENTON, KING COUNTY, WASHINGTON.
NEW ASPHALT PAVEMENT. MATCH
1 EXISTING ASPHALT PAVEMENT.
C2.8 SEAL JOINT WITH EMULSION PER
WSDOT STANDARD SPEC 9-02.1(6).
MATCH EX
202.31 ±
AREA 7
A, \
\ I I
\ MATCH E I /
\ 20 . - T HEX I /
\ 204 31-A
±I / I
MATCA EX I
204.36± I
i
o. I
02� I
203.87 i I
1 I
O'31i I / I
I I
203.28
a /
I
/ I
203.31 /
�o\� S0% I
I /
0 I
OS 203.24 /TW: 204.74
BW:204.39
h'
)
0
\
0
00
00
00
G
0s0%
0 0 0 0
202.68
00
0000�
o
0
202.65
0
0
M\�
M'
202.81
�0
0\0
202.69
0\
202.48 0 0
.
1d1
(0
%
`V
/
�'
20281
7� 40
MATCH EX
202.90±
MATCH EX /
202.84±
0\0
�o
o'
"(30 ° ,q�/
0�
GRAPHIC SCALE
0 5 10
1" = 5 FEET
MUTUAL MATERIALS
CORNERSTONE BLOCK
RETAINING WALL
BOTTOM FACE OF WALL
(BFW ELEV SHOWN ON PLANS)
W
LO
Ln
N
O
0
TOP OF WALL N
(TW ELEV SHOWN ON PLANS)
6" TOPSOIL
TOPPED WITH 3" BARK MULCH
NATIVE / EXISTING
I =1 I I=1 11=
FILL SOILS
III -III -II
a -III=1 I I=1 I
°. � III=III=III=
Y 1-11111 A-11 TURAL FILL
° y = t� #ACTED TO 95% MDD
y D IN 8" LIFTS
Wwax
In A BACKFILL FOR WALLI
EL
MDD
X
COMPACT SUBGRADE BELOW
FOOTING FIRM AND UNYIELDING
o\d I 4" PERFORATED PVC PIPE WALL DRAIN
p°j I
NOTES:
rq!�
/' \\ CONNECT WALL RAIN TO CATCH
1.
2.
DEPTHS INDICATED ARE COMPACTED THICKNESS.
EXCAVATE EXISTING NATIVE SOIL TO A LEVEL OF AT LEAST 1.5 FOOT BELOW THE DESIGN ELEVATION OF THE WALL.
/202.72 BASIN, AT 1.0% MI SLOPE
ALL DELETERIOUS MATERIALS ENCOUNTERED (TOPSOIL, ORGANICS, AND OTHER DEBRIS) SHOULD BE REMOVED AND
WASTED FROM THE SITE. EXPOSED SUBGRADES SHOULD CONSIST OF CLEAN NATIVE SOIL.
TW: 205.31
3.
COMPACT EXPOSED SUBGRADES SUCH THAT THE UPPER ONE (1) FOOT ACHIEVES A COMPACTION LEVEL OF AT LEAST
BW: 203.73
-\
95 PERCENT OF THE MAXIMUM DRY DENSITY PER THE ASTM D1557 TEST METHOD. LOOSE OR SOFT AREAS THAT
CANNOT BE COMPACTED TO THIS LEVEL SHOULD BE OVER -EXCAVATED AND REPLACED WITH COMPACTED
� STCB 2q� 9 RIM-202.5�
\
STRUCTURAL FILL.
10" PVC IIE-198.46 \
\
4.
6-INCH-THICK LEVELING PAD OF WELL -GRADED SAND AND GRAVEL IS PLACED ON THE PREPARED SUBGRADE PRIOR
/ 12" CPP S CIE=198.09
\6"
TO BLOCK PLACEMENT. THIS PAD SHOULD EXTEND AT LEAST 6 INCHES BEYOND THE FRONT AND BACK SIDES OF THE
PVC S IE=�98.21
/ 1 CPP SW IEN197.81 \
�8�
BLOCK AND BE TAMPED TO A FIRM CONDITION.
c� \
\
5.
WALL BACKFILL SHOULD BE PLACED IN LIFTS NOT EXCEEDING 6 INCHES AND COMPACTED WITH HAND -OPERATED
N / \ TW: 204.69 \
COMPACTION EQUIPMENT. COMPACTION OF WALL BACKFILL SHOULD BE BETWEEN 90 TO 92 PERCENT OF THE
/ BW: 202.69
MAXIMUM DRY DENSITY (MDD) PER THE ASTM D1557 TEST METHOD WITHIN 3 FEET OF THE BACK OF THE WALL. AT A
�\
DISTANCE GREATER THAN 3 FEET BEHIND THE BACK OF THE WALL, BACKFILL CAN BE COMPACTED USING
CONVENTIONAL ROLLERS, WITH BACKFILL COMPACTED TO AT LEAST 92 PERCENT OF THE MDD (ASTM D1557).
♦�` \ \206�
PROVIDE TREE PROTECTION TO ALL TREES / TALL SHRUBS
♦`♦
IN BACK OF WALL AREA. PROVIDE 6" TOP SOIL, TOPPED
TYPICAL WALL SECTION
♦♦� \ �20
WITH 3" BARK MULCH TO DISTURBED LANDSCAPING.
\ 0
\♦♦ S
SCALE:1" 1'
MATCH EX ♦♦
`� \�OA� \
\ \
202.69± ♦ 0
�TW: \\\
�♦♦
♦
2046&0
BW 262 6
MATCH EX
202.78± ` \
NEW CEMENT
CONCRETE WALKWAY C2.8 ♦` \ \ 0 /
\ ♦♦ 88 LF 12" BLOCK INING WALL. CONNECT NEW BLOCK WALL TO /
♦♦ 3' MAXIMUM HEIGHT EXISTING BLOCK WALL. MATCH /
♦�� 0 NEW BLOCK TYPE TO EXISTING. _j
T�V /. '04,Q7 TW: 205.16
♦ ♦ ♦ BW: 202.E - _ BW: 204.63
♦---------���--- ------
i
lilll-
0� �
�0
\ STCB 2002 RIM=204.-4 I
\ \ 12" CPP NW IE=19W85
\ \ 8" PVC SE IE=19A.31
\ 8" PVC SW IE=199. 5 I
\ 6'PVC SW IE=200.40 I
1 \ I
BLOCK RETAINING WALL NOTE i \
\
MUTUAL MATERIALS CORNERSTONE BLOCK RETAINING WALL, OR o
EQUIVALENT. WALL SHALL CONFORM TO WSDOT STANDARD \ \ I
SPECIFICATIONS UNDER SECTION 8-24. CONTRACTOR TO MATCH \ \
EXISTING ADJACENT WALL TYPE, SIZE, AND COLOR. OWNER TO \ I
FEILD APPROVE WALL TYPE, SIZE, AND COLOR IN THE FIELD. \ \I
\ I \
SCALE: 1" = 5' I I
LEGEND
- -
RIGHT-OF-WAY/PROPERTY LINE
- - - - -XXX-
EXISTING MINOR CONTOURS
- -XXX-
EXISTING MAJOR CONTOURS
123
PROPOSED MINOR CONTOUR
123
PROPOSED MAJOR CONTOUR
-x x x x x-
FENCING
ASPHALT PAVEMENT - STANDARD DUTY
e o
CEMENT CONCRETE - STANDARD DUTY
MUTUAL MATERIALS CORNERSTONE
BLOCK RETAINING WALL, OR EQUIVALENT
DETECTABLE WARNING SURFACE PER
WSDOT STANDARD PLAN F-45.10-03
R7-801 SIGN PER WSDOT SIGN
FABRICATION MANUAL (M 55-05)
VC
CONCRETE VERTICAL CURB
FC
CONCRETE FLUSH CURB
■
CATCH BASIN TYPE 1
D
STORM DRAINAGE PIPING
.,,-123.45
FINISHED GRADE SPOT ELEVATION
T TW 123.45
TOP OF WALL
T BW 123.45
BOTTOM OF WALL
OR 31
SLOPE
R=430815
�E
TACOMA • SEATTLE • SPOKANE • TRI-CITIES
2215 North 30th Street, Suite 300 Tacoma, WA 98403
253.383.2422 TEL 253.383.2572 FAX www.ahbl.com WEB
Project Title:
TALBOT HILL
ELEMENTARY SCHOOL
Client:
RENTON
SCHOOL DISTRICT
ANDREW HOLLENBACK
300 SOUTHWEST 7TH STREET
RENTON, WA 98057
Project No.
2230870.10
Issue Set & Date:
PERMIT SET
JUNE 21, 2024
- - - 6/21 /2023
NOTICE
ALTERATION OF THIS DOCUIENT SHALL IWALDATE THE
PROFESSIONAL SEAL AND SIGNATURE RAWATION OF
THIS DOCUMENT DOES NOT DEROGATE FROM RESERVED
OWNERSIV RRNTS N IT. THIS DOCUMENT IS FOR USE
ONLY FOR THE PR "T DARED N THE TITLE BLOCN
AND IS NOT TO BE USED FOR REPAIR, REMODEL OR
ADDITION TO THAT MIECT OR FOR ANY OTHER PROM.
/3\
/ \ 05/13/2024 ADDENDUM 1
Revisions:
Sheet Title:
AREA 7 SITE
IMPROVEMENTS PLAN
Designed by: Drawn by: Checked bv:
JAD JAD DCN
Sheet No.
C2m7
15 of 17 Sheets