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4' -0"
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SEE LOW FLOW NOTCH DETAIL,
w CHANNEL, SYMMETRICAL I
a8' -0" 8' -0"
EXTENT OF GEOTEXTILE COVERED WITH 8" MIN >
DEPTH OF QUARRY SPALLS, GRANULAR 7' -0" 7' -0"
BACKFILL & STREAMBED GRAVEL UPSTREAM ----------------
_ _ __
OF SEAL LOG i 2 TYP _ It UNDISTURBED GROUND
A SEE SHT. 5 FOR
EXCAVATE AS STEEPLY AS
_ I I .
UPPER LOG CREST ELEV I POSSIBLE ABOVE GRAVEL
�-1-, BREAK POINTS
io ' __ - 2 Tom' COMPACTED GRANULAR BACKFILL
-- - -- --
B L_______ L STREAMBED GRAVEL, 12" MIN DEPTH
2' THICK RIPRAP LAYER
i TYP EACH LOG C - C
VEGETATION NOT
LOG DROP STRUCTURE LOG DROP STRUCTURE
CREST �y,
. -1 = UPPER LOG
SHEETS 19-rL q UPPER LOG ! T 22 II 20' -0' - VARIES (EFFECTIVE SLOPE = 57)
12' -Ol 3' -0" 5' -0" 5' -0"
STREAMBED GRAVEL RIPRAP RIPRAP GEOTEXTILE
2.1 TYP' (VARIES, SEE SHEET 5) TYP TYP LIMITS TYP
E C i 2' THICK RIPRAP LAYER TYP
2 X 6 PRESSURE TREATED SEAL, GI
SEAL D EDGE WITH TO PROVIDE
SEAL LOG B BOARD MITER ' 18 "0 MIN. UPPER LOG
SEALED EDGES AND ATTACH TO
-- f - - - -- BELOW I GA X NAILS.
TH 2 X 4 TYP SEE PROFILE, SHEET 5 STREAMBED GRAVEL
FOR CREST ELEV TYP 12" MIN. DEPTH TYP
I
i -- -- I___ - - - -'� ATTACH GEOTEXTILE (NICOLON570 I! /
-- -- OR EQUAL) TO UPPER LOG WITH ; /! STREAMBED GRAVEL GRADE LOGS ARE SIMILAR
UPPER LOG 2 X 4 PRESSURE TREATED WOOD ! 12" MIN. DEPTH TYP TO LOG DROPS EXCEPT
E CLEAT, FULL LOG LENGTH TYP ORIENTED a ORIENTED VERTICALLY
; j / > SEE NOTE 2
PRECAST CONCRETE f ! FIOW ° ° ~ --D OVER GEOTEXTILE WITH
DRILL 1 3 8 "0 HOLE ®30; i1 m 8" EPTH OF QUARRY SPALLS
BALLAST BLOCK / f AND GRANULAR BACKFILL TYP
DRIVE (2) #10 REBAR THROUGH
LOGS. AND EMBED INTO CREEK /
BED AT LEAST 4' TYP FLOW
I
4' -0" TOE WIDTH IMMEDIATELY DOWNSTREAM
OF LOG STRUCTURE, SEE SECT D -D ON SHEET
PLAN
D_
to o J
� W
w t- Cy CHANNEL, SYMMETRICAL
>
_ --
- - -2 TYP.
I
- - - --
8" MIN. QUARRY SPALLS
OVER GEOTEXTILE UPSTREAM
OF SEAL LOG. A - A
CHANNEL, SYMMETRICAL
13' -0"
-
LOW FLOW NOTCH DETAIL
-
E`
7• -0"
5" -0"
18 "0 MIN. UPPER LOG
I
-0"
SEE SHEET 5 FOR CREST ELEV.
TOE OF SLOPE
ON D/S
----
- - - - - --
SIDE OF LOG
--- - - - - --
-------------------------
2 TYP.
L
LEVELING SHIMS, SEE SECTION E
18 "0 MIN. SEAL LOG
#10 REBAR (2 REQ'D)
E
2' THICK RIPRAP ON
DOWNSTREAM SIDE OF LOGS
SEE PLAN FOR EXTENTS
B -.B
,Yw,o _s 7_ 22 4C
9
I � A � SUBGRADE
\ N 18 "0 SEAL LOG
COMPACTED GRANULAR BACKFILL I D - D GRADE LOG STRUCTURE DETAIL
UNDISTURBED GROUND
STREAMBED GRAVEL, 12" MIN DEPTH '..
EXCAVATE AS STEEPLY AS CHAIN TO HOLD
POSSIBLE BREAK POINTS GRAVEL AND CONCRETE TO NOTCH LOG 2" DEEP BY 1:1 TYP NOTES:
RIPRAP BREAK POINTS � CONCRETE BLOCK
2" WIDE FOR CHAIN 1. UPPER LOGS FOR LOG DROPS &
2' THICK RIPRAP, SEE 18 "0 UPPER LOG GRADE LOGS SHALL BE RELATIVELY
PLAN FOR EXTENTS CREST ELEVATION PER STRAIGHT AND SET LEVEL TO WITHIN
PROFILE ON SHEET 5 _ 18 "0 UPPER LOG
±1/4" OVER THE WIDTH OF
3/4"0 BOLTS OR ALL FLOW EXPOSED PORTION OF LOG.
THREADED RODS PRESSURE TREATED OR
CEDAR WOOD SHIMS FOR 2. GRADE LOG STRUCTURES ARE SIMILAR
LEVELING TO LOG DROP STRUCTURES EXCEPT
UPPER LOG ATTACHED TO 1O J -- WITHOUT NOTCH, GEOTEXTILE, 2X4
ECOLOGY BLOCK WITH CHAIN (TYP.) o�
! 1.5'H X 3' X 3' PRECAST ti CLEAT &SEAL. SECTS A =A, B -B
CONCRETE BALLAST BLOCK AND C -C APPLY TO GRADE LOGS wj
- EXISTING GROUND 10 ' EXCEPT AS INDICATED ABOVE.
1/4" L-11- 1' -6" ELEVATION SECTION
E - E LOW FLOW NOTCH DETAIL
2' THICK RIPRAP, SEE PLAN
FOR EXTENTS
0 4
SCALE 0 2 FEET SCALE 0 2 FEET 8
- UNDISTURBED GROUND I, I, I i I I 1 1 I I I I
1/4" = V -0"
- COMPACTED GRANULAR FILL 1/2" = 1' -0" 1/2" = 1' -0° EXCEPT AS NOTED
- LOCALIZED EXCAVATION FOR
LOG /BLOCK INSTALLATION APPROVED CITY OF RENTON
- 1.5'H X 3' X 3' PRECAST CONCRETE Si' + POSpL DEPARTMENT OF PUBLIC WORKS
6ALLAST BLOCK, PLACE AS NEAR' TO Q of wASy! LZ' BY D DATE -6- 73
�w ��
END OF SEAL LOG AS POSSIBLE MAPLEWOOD CREEK FISH CHANNEL PROJECT
m� het ? Yr,
= LOG, DROP STRUCTURE
A ^ PLAN, SECTIONS, AND DETAILS
—92 9 �n �, / \'!e�✓�� DESIGNED: DEP
p� E-IS7'ER�' $t� � DATE: 7/1/98 FILE NAME: SHEETII
�`r'SIONAL,�l Engineers and Scientists DRAWN: DEP
Bellevue, Washington CHECKED: DPT SCALE: AS SHOWN nELD BOOK: PAGE:
ExPiPES
12-21-99 TEL- (425) 602 -4000 -
FAX (425).602 -4020 N0. REviSIDN BY APPR.1 DATE APPROVED: SHEET: 11 OF: 22
SCANNFD1 MAR '3 0 2000
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