B-7.1_-_Amendment_0003.pdf

AUXILIARY SPILLWAY SITE PLAN

SCALE 1" = 10'

AUXILIARY SPILLWAY PROFILE VIEW

H&V SCALE 1" = 10'

AUXILIARY SPILLWAY STILLING BASIN DETAIL

H&V SCALE 1" = 6'

EXISTING DAM CREST EL.

659.5

APPROXIMATE WATER

SURFACE FOR 10-YEAR

FLOOD DURING FIRST STAGE

TOP OF AUXILIARY SPILLWAY

STILLING BASIN BERM

EL. 621

SEE DETAIL ON SHEET B-7.2

HYDRAULIC

JUMP

AUXILIARY SPILLWAY STILLING

BASIN OVERFLOW WEIR

EL. 617

AUXILIARY SPILLWAY

TAILWATER CONTROL BERM

OVERFLOW SECTION

EL. 620

EL. 615.0

MINIMUM TOP OF AUXILIARY SPILLWAY

STILLING BASIN SIDE BERMS

EL. 621

HYDRAULIC JUMP

TAILWATER ELEVATION 622.5±

AUXILIARY SPILLWAY

STILLING BASIN

OVERFLOW WEIR

EL. 617

AUXILIARY SPILLWAY TAILWATER CONTROL

BERM PROTECTED WITH RIPRAPRIPRAP

(D50=300 POUNDS)

EL. 623

100 YEAR WSE EL. 622.6

1:1

RIPRAP

(D50=1500 POUNDS)

EXISTING

GROUND

10-YEAR WSE EL. 622.5

FIRST SPILLWAY CUT

INVERT EL. 623

FIRST CUT OF DAM

INVERT EL. 623

CONCRETE CORE

WALL

ARTICULATED CONCRETE

BLOCK SPILLWAY

SEE DETAILS ON SHEET B-7.2

2:1 SLOPE

(TYP.)

TOP OF TAILW

ATER

CONTROL BERM

ARTICULATED CONCRETE

BLOCK SPILLWAY WEIR

SEE DETAILS ON SHEET B-7.2

AUXILIARY SPILLWAY

STILLING BASIN

SEE DETAIL THIS SHEET2+00.001+00.00 3+00.00

BERM EL. 621

30-FOOT WIDE AUXILIARY

SPILLWAY STILLING BASIN

OUTLET WEIR

INVERT EL. 617

SEE DETAIL ON SHEET B-7.3

FILL ARTICULATED CONCRETE BLOCKS WITH

CONCRETE FROM CORE WALL TO A MINIMUM

OF 10-FEET DOWNSTREAM

ARTICULATED CONCRETE BLOCK

SPILLWAY AT 12.2% SLOPE

SEE DETAIL ON SHEET B-7.2

26'

RIPRAP

(D50=300 POUNDS)RIPRAP

(D50=300 POUNDS)

BOTTOM OF CONCRETE

CORE WALL

BOTTOM OF SHEET PILE

WALL

B - 7.1

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10' MIN.

6' 3'

EXISTING CONCRETE

CORE WALL

AUXILIARY SPILLWAY WEIR

CONCRETE ARTICULATED CONCRETE BLOCK A

MINIMUM OF 10-FEET DOWNSTREAM OF CORE WALL

RIPRAP COVERED BERM

SEE DETAIL ON SHEET B-7.3

SEE DETAIL OF AUXILIARY SPILLWAY

STILLING BASIN ON THIS SHEET

SEE DETAILS ON SHEET B-7.4

K:

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2'

4-FOOT WIDE F-STYLE JERSEY BARRIER

BAFFLE BLOCK SPACED EVENLY

TOP EL. 616.0±

SEE DETAILS ON SHEET B-7.3

4- FOOT WIDE F-STYLE JERSEY

BARRIER BAFFLE BLOCK

(TYP OF 5) SPACED EVENLY

TOP EL. 616.0±

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6-INCHES OF AASHTO #1

AND #2 BEDDING STONE

6-INCHES OF AASHTO #1

AND #2 BEDDING STONE

ARTICULATED CONCRETE

BLOCK WEIR (TYP.)

S

I G

N

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I E

W

CENTERLINE OF TAILWATER

CONTROL BERM

MINIMUM EL. 623.0

EL. 614.5

6.2 ' FROM GRADE BREAK

2'

4'

4'

HDPE CULVERT PIPES FOR

TAILWATER CONTROL BERM

SEE DETAILS ON SHEET B-7.4

20'

2:1 SLOPE

(TYP.)

2:1 SLOPE

(TYP.)

2:1 SLOPE

(TYP.)

2:1 SLOPE

(TYP.)

ARTICULATED CONCRETE

BLOCK SEAM

SEE DETAIL ON SHEET B-7.2

LIMIT OF GROUTED RIPRAP

TOP EL. 615.0±

SEE DETAIL ON SHEET B-7.3

34' MIN.

LIMIT OF FULL DEPTH

GROUTED RIPRAP

GROUTED RIPRAP TO FULL DEPTH -TOP OF ROCK TO

BE AT MAXIMUM ELEVATION OF 614.0. A MINIMUM OF

6-INCHES OF CONCRETE TO COVER TOP OF RIPRAP

WHICH IS TO HAVE SMOOTH FINISH.

EL. 614.5

NOTES:

1. RIPRAP AT TOE OF GRADE BREAK

BELOW ARTICULATED CONCRETE

BLOCKS TO BE COVERED ENTIRELY

WITH GROUT AND SMOOTH FINISHED.

2. RIPRAP ON SIDESLOPES TO BE

GROUTED TO FULL DEPTH COVERED

ENTIRELY WITH GROUT AND SMOOTH

FINISHED.

3. TOP OF ROCK RIPRAP DOWNSTREAM OF

BAFFLES TO BE GROUTED TO FULL

DEPTH TO EL. 615.0.

4. GROUT RIPRAP ON SIDESLOPES A

MINIMUM OF 2.5-FEET DOWNSTREAM OF

GROUTED BASIN JERSEY BARRIER

BAFFLES.

ROCK RIPRAP LETDOWN (D50=24-INCHES)

ON AUXILIARY SPILLWAY WEIR

RIPRAP LETDOWN (D50=700 POUNDS)

ON AUXILIARY SPILLWAY WEIR

ARTICULATED CONCRETE

BLOCK SEAM (TYP.)

SEE DETAIL ON SHEET B-7.2

ARTICULATED CONCRETE

BLOCK SEAM (TYP.)

SEE DETAIL ON SHEET B-7.2

10' MIN.

ARTICULATED CONCRETE BLOCK

TURNDOWN AT GRADE BREAK

TO EXTEND TO MINIMUM DEPTH

OF 615

SEE DETAIL ON THIS SHEET

APPROX.77.5' APPROX. 70'

ARTICULATED CONCRETE

BLOCK SEAM (TYP.)

SEE DETAIL ON SHEET B-7.2 CONCRETE ARTICULATED

CONCRETE BLOCK SPILLWAY TO

ELEVATION 616.5 UPSTREAM OF

FIRST SEAM ABOVE STILLING BASIN

EL. 616.0

EL. 616.0

EL. 615.0

RIPRAP

(D50=700 POUNDS)EXTEND FULL DEPTH GROUT 3' MIN.EL. 608.5

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APPROXIMATE 10-YEAR FLOOD EL. 629

APPROXIMATE LOWERED WSE EL. 627

APPROXIMATE FIRST STAGE

GRADE BREAK

ARTICULATED CONCRETE

BLOCK TURNDOWN BELOW

GRADE BREAK TO EXTEND TO

MINIMUM DEPTH OF 613.5

SEE DETAIL ON THIS SHEET

10' MIN.

AUXILIARY SPILLWAY TURNDOWN DETAIL

H&V SCALE 1" = 2'

APPROXIMATE WATER

SURFACE FOR 10-YEAR

FLOOD DURING FIRST STAGE

ARTICULATED CONCRETE BLOCK

SPILLWAY AT 12.2% SLOPE

SEE DETAIL ON SHEET B-7.2

ARTICULATED CONCRETE BLOCK

BELOW GRADE BREAK TO

EXTEND TO MINIMUM DEPTH AS

SHOWN ON THE PROFILE VIEW

6-INCHES OF AASHTO #1

AND #2 BEDDING STONE

GEOTEXTILE BETWEEN

SUBGRADE AND AASHTO #1

AND #2 BEDDING STONE

GEOGRID BETWEEN

ARTICULATED CONCRETE

BLOCKS AND AASHTO #1

AND #2 BEDDING STONE

ANCHOR GEOTEXTILE A

MINIMUM OF 1'-FOOT INTO

SUBGRADE

CONCRETE SEAM 1' MIN.

OVERLAP ONTO UPSTREAM AND

DOWNSTREAM BLOCK

FILL TURNED DOWN ARTICULATED

CONCRETE BLOCKS WITH CONCRETE

FROM SEAM TO END OF PANEL

TYPICAL ARTICULATED

CONCRETE BLOCK PANEL

SEAM

A M

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