B.08.Amendmet W912EE25BA006-0001_Drawings.pdf

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Attached to
Tensas Parish, LA, Point Pleasant-Yucatan, LA, Levee Enlargement and Berms, MRL Item 411-R, FC/MR&T, WBMRL
Solicitation number
W912EE25BA006
Issued by

About this file

These are detailed technical drawings for a U.S. Army Corps of Engineers levee enlargement project in Tensas Parish, Louisiana. The documents (sheets C-501, C-502, and C-505) provide specific engineering details for storm water pollution prevention, levee typical details, and cattle guard installations. Key technical specifications include:

Storm Water Pollution Prevention (C-501): Detailed silt fence installation methods, hay wattle placement, construction entrance/exit details with specifications for filter fabric, trench excavation, and erosion control measures. Levee Typical Details (C-502): Includes benching details for levee construction, settlement plate placement, and excavation requirements with specifications for steel plate placement and levee enlargement. Cattle Guard Details (C-505): Comprehensive drawings for two cattle guard types (Type A and B), including concrete header configurations, rebar placements, lifting eye locations, and installation stations at specific levee centerline positions (4956+78, 4998+50, 5019+88). The drawings are part of a $10+ million project with a 355-calendar day performance period, set for complete levee enlargement and associated infrastructure improvements.

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POINT "A"

POINT "A"

POINT "B"

PLAN

ELEVATION

NOTE: ELEVATION OF POINT "A" MUST BE

HIGHER THAN ELEVATION OF POINT "B"

FL

O

W

RUNOFF

FLOW

FLOW

FLOW

STEEL OR WOOD POST (5' MIN LENGTH)

FILTER FABRIC

ATTACH SECURELY TO UPSTREAM SIDE

OF POST. SILT FENCE MIN. 16" ABOVE

GROUND AND MAX. 34" ABOVE GROUND.

2' M

IN

3' M

IN

4" x 4" TRENCH.

EXCAVATE, LINE WITH FILTER FABRIC

AS SHOWN, AND BACKFILL WITH

COMPACTED MATERIAL.

SECTION

STEEL OR WOOD POST

EXTRA STRENGTH FILTER FABRIC REQUIRED

IF WIRE MESH SUPPORT IS NOT USED.

10'-0" MAXIMUM SPACING WITH WOVEN WIRE SUPPORT FENCE.

6'-0" MAXIMUM SPACING WITHOUT WIRE SUPPORT FENCE.

PLAN

9" (MAX. RECOMMENDED)

STORAGE HEIGHT

WOOD STAKE AT TOE

OF SLOPE, BOTH SIDES

WATTLE (12" OR 24") TO BE PLACE IN "U" SHAPE

FLOW

A

A

SEE ELEVATION DETAIL FOR

HEIGHT OF WATTLE ENDS

PLAN

SECTION A-A ELEVATION

WOOD STAKE

ANCHOR THROUGH NETTING

WITHOUT DAMAGE

CHANNEL BOTTOM

FLOW12

" O R

4"

1.

5'

M

IN

DITCH BOTTOM

WATTLE

EL. "B"

EL. "A"

WATTLE

NOTE: ELEVATION "A" MUST BE HIGHER THAN

FLOWLINE POINT "B"

HARD SURFACE PUBLIC ROAD

COARSE AGGREGATE

50' MIN. LENGTH

WIDTH AS REQD.

6" MIN. DEPTH

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3RD BCOES REVIEW BACKCHECK

C-501

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1. INSPECT AND REPAIR FENCE AFTER EACH STORM EVENT AND REMOVE SEDIMENT WHEN

NECESSARY.

2. REMOVED SEDIMENT SHALL BE DEPOSITED TO AN AREA THAT WILL NOT CONTRIBUTE

SEDIMENT OFF-SITE AND CAN BE PERMANENTLY STABILIZED.

3. SILT SCREEN FENCE SHALL BE PLACED ALONG SLOPE CONTOURS TO MAXIMIZE PONDING

EFFICIENCY.

4. CONTRACTOR SHALL BEGIN EXCAVATION OPERATIONS AT A MINIMUM 10 FOOT OFFSET

INSIDE THE BORROW AREA RIGHT OF WAY AS SHOWN.

5. OVERBANK PUMPING IS PROHIBITED. ENCLOSED CONDUITS SHALL BE USED TO PUMP ALL

EXCESS WATER FROM THE BORROW AREA AS DEEMED NECESSARY TO APPROVED

DISCHARGE LOCATIONS. INLET LINES SHALL ONLY PUMP WATER FROM THE SURFACE OF

THE BORROW AREA, AND POINTS OF DISCHARGE SHALL EXTEND AT A MINIMUM OF

20-FEET PERPENDICULAR FROM THE WATER'S EDGE OF THE RECEIVING BODY BELOW THE

SURFACE (5' MINIMUM OR BOTTOM) AS TO INHIBIT EROSION. ADDITIONAL EROSION

MEASURES SHALL BE UTILIZED AT ANY POINT IN WHICH IMMEDIATE ACTION IS NEEDED TO

MAINTAIN EXISTING SOIL STABILITY.

6. THE ENVIRONMENTAL PROTECTION CONTROLS SHOWN IN THE CONTRACT DRAWINGS

MAY NOT FULLY ADDRESS ALL CONCERNS AND PERMIT REQUIREMENTS, BUT ARE

PROVIDED TO ESTABLISH A MINIMUM LEVEL OF PROTECTION REQUIRED AT ALL TIMES. THE

CONTRACTOR SHALL CONSIDER HIS WORK OPERATIONS, METHODS, AND CURRENT SITE

CONDITIONS TO DEVELOP A COMPLETE PLAN, INCLUDING ADDITIONAL PROTECTION

MEASURES AS REQUIRED, TO ASSURE ADEQUATE PERFORMANCE AND COMPLIANCE WITH

ALL CONTRACT DOCUMENTS, REGULATIONS, AND PERMITS. REFERENCE SECTION 01 57

20.00 09 ENVIRONMENTAL PROTECTION AND SECTION 01 57 23.00 09 STORM WATER

POLLUTION PREVENTION PLAN FOR ADDITIONAL REQUIREMENTS.

7. THE CONTRACTOR SHALL EMPLOY THE USE OF ADDITIONAL EROSION CONTROL BMP

MEASURES TO MITIGATE THE DISTURBANCE OF LOCATIONS WHERE CLEARING AND

GRUBBING IS TO OCCUR ON THE LANDSIDE TOE OF THE LEVEE.

8. IN THE EVENT THAT ADJACENT RECEIVING WATER BODIES ARE UNAVAILABLE FOR

UNWATERING, UNWATERING SHALL BE ADMINISTERED ACCORDING TO ALTERNATIVE BMP

PRACTICES APPROVED BY THE CONTRACTING OFFICER AND LDEQ. APPROVED DISCHARGE

LOCATIONS ARE NOT DEFINED ON THE PLANS AND SHALL BE COORDINATED WITH THE

LANDOWNER AND THE CONTRACTING OFFICER.

9. MINIMUM RECOMMENDED PLACEMENT INTERVAL BETWEEN WATTLE DITCH CHECK IS 100'

UNLESS SHOWN OTHERWISE ON THE PLANS OR EROSION CONTROL PLAN APPROVED BY

THE CONTRACTING OFFICER.

10. ANCHORING WOOD STAKES SHALL BE SIZED, SPACED, DRIVEN, AND BE OF A MATERIAL

THAT EFFECTIVELY SECURES THE CHECK. STAKE SPACING SHALL BE A MAXIMUM OF THREE

FEET. ALL NON-DEGRADABLE MATERIALS SHALL BE REMOVED WHEN NO LONGER NEEDED.

11. TRENCHING OF WATTLES MAY BE NECESSARY IF PIPING BECOMES EVIDENT.

12. WATTLES SHOULD NOT BE USED IN HARD BOTTOM CHANNELS.

NOTES

CONSTRUCTION ENTRANCE AND EXIT DETAIL

NOT TO SCALEA6

SILT FENCE DITCH PLACEMENT DETAIL

NOT TO SCALEF1

F4 NOT TO SCALE

SILT FENCE INSTALLATION DETAILS

C1 NOT TO SCALE

HAY WATTLE PLACEMENT AND INSTALLATION DETAILS

EXISTING GROUND

NEW LEVEE TOE

GROSS LEVEE SECTION

LAST FINISHED LIFT FOR EACH BENCH TO BE EVEN WITH TOP OF VERTICAL FACE OF BENCH

FINISHED LIFTS (SEE SPECIFICATIONS)

2' M

AX

TY

P)

1' M

IN

TY

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EXISTING LEVEE

CENTER OF PLATE CENTERLINE LEVEE ENLARGEMENT

5'

EXCAVATE 1V:1H

MINIMUM 2' x 2' x 14" STEEL PLATE PLACED ON UNDISTURBED LEVEL GROUND

RIVERSIDE

STEEL PLATE 2' x 2' x 14"

5'

STD. COUPLING

EXISTING GROUND

PIPE LENGTH (5'-0")

TOP OF LEVEE FILL

CENTER OF PLATE

STEEL PLATE MINIMUM 2' x 2' x 14"

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1. NOTE 1

2. NOTE 2

3. NOTE 3

NOTES

LEGEND

A5 NOT TO SCALE

SETTLEMENT PLATE DETAILS

C5 NOT TO SCALE

SETTLEMENT PLATE PLACEMENT DETAILS

F5 NOT TO SCALE

BENCHING DETAIL

#3 REBARS

3'-8"

1' -6

8"

13'-4"

C C

B B

AA

CONCRETE HEADER

C LIFTING EYE3'-8" L

6 - #3 REBARS @

4"(TYP.)

3'-8"

9" 1' -3

"6"

#3 REBARS 3'-8"

4" 6"

R=3"

13'-4"

#3 REBAR

#3 REBAR

8"

1'

-6

#6 LIFTING

EYE

1'-3"

9" 6"

W5X19

W5X19 W5X196"

9"

'-0

W5X19

1'-11" 3'-2"

W5X19 CONCRETE HEADER

3'-2" 3'-2" 1'-11"

8"

W5X19

1' -6

8"

1'-3"

#3

W5X19

8" 8"

CONCRETE HEADER

#3 W5X19

9" 1"

9" 6"

20'-0"

CATTLE GUARD TYPE A

CATTLE GUARD TYPE B2'-1" 2'-1"

20'-0"

2" (T

YP

CATTLE GUARD TYPE B

CATTLE GUARD TYPE A

16 3

1 2"

21 2"

21 2"

2"

S5X10

S5X10

13 - S5X10 (TYP.)

4" X 2" X 9'-10" FLAT BAR 8

2"1

4" X 2" X 9'-10" FLAT BAR

5 EQUAL SPACES

#3 REBARS

4" X 2" X 9'-10" FLAT BAR

13'-4" TYPE "A"

20' TYPE "B"

CATTLE GUARD TYPE "A"

CATTLE GUARD TYPE "B"

CONCRETE HEADER PLAN CONCRETE HEADER

FRONT ELEVATION SIDE ELEVATION

CONCRETE HEADER

SECTION B - BSECTION A - A

5 SPA. @ 3'-2" = 15'-10"

SECTION C - C

GENERAL PLAN

S x

B

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'-0

CRUSHED STONE

SURFACING

SCALE 1/2" = 1'-0"

NOTE:

THE SCALE SHOWN IS FOR TYPE A CATTLE GUARDS

NONE

SCALE 1/2" = 1'-0"

NOTE:

All EXPOSED CONCRETE CORNERS SHALL BE CHAMFERED 1".

SCALE 1/2" = 1'-0"

SCALE 1/2" = 1'-0"

SCALE 1/2" = 1'-0" SCALE 1/2" = 1'-0"

4" X 2" X 9'-10" FLAT BAR

1 2"

TYPICAL SECTION

RAMP AT CATTLE GUARD

SCALE: NONE

6 - #3 REBARS @

5 EQUAL SPACES

#6 LIFTING EYE

CONCRETE HEADER

1'-11" 3'-2" 3'-2" 3'-2" 1'-11'

2'-1" 5 SPA. @ 3'-2" = 15'-10" 1.92'

CATTLE GUARD TYPE "A"

CATTLE GUARD TYPE "B"

1' -6

5'-6"

11'-0"

LOCATION OF CATTLE GUARD AS SHOWN ON DRAWINGS

SEMICOMPACTED EMBANKMENT

GROSS LEVEE GRADE

CRUSHED STONE SURFACING PLACED AT 0.5 TN/LF

SEMICOMPACTED LEVEE EMBANKMENT

GROSS LEVEE GRADE

1V:20H 1V:20H

CRUSHED STONE SURFACING PLACED AT 0.5 TN/LF

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TABLE NOTES:

1. STATIONING SHOWN IS NEW LEVEE CENTERLINE STATION.

2. CATTLE GUARD STATIONING IS APPROXIMATE.

CATTLE GUARDS TO BE INSTALLED

CATTLE GUARD TYPE STATION

TYPE "B" 4956+78

TYPE "B" 4998+50

TYPE "B" 5019+88

Sheets and Views
C-501
Sheet 1
C-502
Sheet 1
C-505
Sheet 1

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