ADS – FLEXSTORM CONNECTOR PIPE SCREEN (CPS) WORK INSTRUCTIONS

1.0 Product Selection: Installer to determine which CPS Model is required based on LA

County’s APPENDIX B – CPS SIZING TABLE (Tables 1 and 2) revised 5/20/2015. The Screen

Length, Screen Height, and Bypass Height (when required) are established from the tables, but

the ADS Screen Shape will depend on particular location of the connector pipe and manhole

entry. Refer to ADS – FLEXSTORM CPS SELECTION GUIDE to determine base model numbers and

shapes.

2.0 Materials: All FLEXSTORM CPS are comprised entirely of 304 stainless steel and brought to

the field pre-configured for easy assembly once Product Selection is confirmed; All Models are

supplied with vertical upright mounting brackets which accept qty (4) 3/8” x 3” minimum

stainless anchor bolts. All bypass lids require a qty (2) 3/8” x 3” min stainless anchor bolts.

Mounting brackets are equipped with slotted holes to allow for varied contours on walls and

sloped floors.

3.0 Installation of Base Model: Drop CPS through the manhole opening. Position the CPS

evenly spaced around the connector pipe ensuring a minimum of 4” spacing away from any

corners. Loosen the bolts in the slotted holes which connect the screen to the upright

mounting brackets until the bottom is flush with the floor. Tighten the bolts and mark the hole

locations on the wall for the stainless anchor bolts. Drill holes and hammer the bolts in place

and secure the CPS using stainless nuts. If the bottom of the base exposes more than a 5 mm

gap then an additional base face strip may be fastened to the base channel using corrosion

resistant screws or rivets. This base face strip matches the length of the CPS and will need to

be scribed and custom cut to match the contour of the floor.

3.1 Installation of Bypass Lid: If the bypass lid is required verify the minimum bypass height

needed and mark the “B” bypass height location on the wall directly above the base uprights.

Lift the lid in place and mark the hole locations for the lid mounting brackets. Drill holes and

hammer the bolts in place and secure the lid with the stainless nuts.

4.0 Quick Release CPS Options: In certain locations, the CPS may need to be removed quickly

in order to provide increased accessibility through the manhole entry. In such cases, the CPS

would utilize the “Quick Release” wall mount bracket set and standard CPS flanges. See the

installation drawing labeled Quick Release CPS Detail for step by step instructions. In standard

installations, the CPS can be removed by simply loosening the 3/8” anchor nuts that secure it to

the wall.

5.0 Warranty: ADS – FLEXSTORM warrants the CPS material to be free of defects and

guarantees base framing integrity for a period of 3 years from installation date.

ADS – FLEXSTORM CONNECTOR PIPE SCREEN (CPS) MAINTENANCE GUIDELINES

FLEXSTORM suggests that its Connector Pipe Screens (CPS) be maintained per this modified set of

conditions from the LA County CPS Standards. FLEXSTORM advises that catch basins be cleaned out at

least 2 times per year and/or if debris has filled above a 40% level inside of the catch basin. Sites with

large amounts of foliage, high sediment loads, or smaller CPS devices might need to be cleaned more

frequently.

Maintenance Conditions and Maintenance Standards: The Following are deficiencies in maintenance

conditions and their corresponding maintenance standards which shall apply to the Connector Pipe

Screen. The cleanout of each CB shall meet the maintenance standards listed as follows:

Description of Maintenance Actions

1 Clear trash and debris located immediately in front of curb opening or side opening of CB, and on top or between metal grates of grated CB.

2 Remove Vegetation growing across and/or blocking the basin opening.

3 Remove all Trash and debris and vegetation from inside the Catch Basin.

4 Remove Trash and debris in the connector pipe opening, upstream or downstream.

5 Knock off/Remove all Debris that covers the perforated openings of the connector pipe screen

6 Ensure there is no Standing Water inside of catch basin (indicates the device is not properly draining)

Trash and debris shall include, but is not limited to, mud, vegetation, and garbage.

Upon completion of a cleanout operation at a CB and before leaving it, the Contractor shall sweep the

top surface of the CB and the area 2 feet around the CB, and shall remove any trash and debris resulting

from the cleanout operations. No debris is to be left at a CB for future pick-up.

Method of Removal: All trash and debris required to be removed from the CBs shall be removed in a

manner to be determined by the Contractor. This can be done by hand or with a truck mounted vacuum.

If entering the catch basin ensure that local confined space entry procedures are followed. The

Contractor shall not allow any trash or debris to enter the connector pipe or main line as a result of the

cleanout operations.

Debris Disposal: All trash and debris removed under this Contract shall become the property of the

Contractor and shall be legally disposed of away from the CB sites. The Contractor is responsible for

proper disposal of the trash and debris, including obtaining approvals from all jurisdictional agencies, as

applicable. The contractor shall be responsible for contacting and coordinating with local Animal Care

and Control for pickup and disposal of dead animals. However, the Contractor shall be responsible for

removing any dead animal from inside a CB.

~~

Deflector c~~ c`~

n

O

*Hb

~ '}~~''~'z ~ ~~; ~'z=ti}~;, ~~,'~,r: n;~ t :.'~ t,,,,,

'F)~1 1~~:1)̀ ~

j ) } k } t 1 } .~

i~ i r ~ y )~}~~~~~*HS ,;, ,,,~,~,

„>,Vertical ;~~,,;1 1 I4" x 1 /2" x 1 /2"

'}`}''',r' ̀\`y,,,,,

2~~ 12GA U-Channel '1`~'}'~'~'~ 1,, ,.

~TYp•) Stiffener (Typ,) ~~~~ .:~}~i.~

,,,. .}>;~::`' 1,

C

Horizontal1 1 /4" x 1 /2" x 1 /2"12GA U-Channel

Stiffener (Typ.)

PLAN VIEWN.T.S.

*See Appendix A-1 And CPS Sizing Table For Hb, Hs, And L Values

ELEVATION VIEWN.T.S.

NOTES:1. All Materials Are Type 304SS Unless Otherwise Noted

2. All Horizontal And Vertical Stiffeners Shall Be SpotWelded @ 4"C.C. (Max) To Perforated Screen

3. For Catch Basin Uneven Floor E~ension Panel DetailSee Sh. 3

Spot Weld (Typ.)See Note 2Hereon

1 1 /2" x 1 1 /2"13GA MountingBracket (Typ.)

14GA 5mmPerforated Screen50% Open =~ 2~~

3/4" ~Typ~~ Ex. Catch~Typ'~ - Basin Wall__

__ 1 1 /2" x 1 1 /2•• X ••HS••F = 13GA Mounting~ =~ Bracket (Typ.)

See Detail A/~~ `~~Hereon

5/16" x 1" Hex Bolt, ~~1Washer, And Lock Nut, ~ 3/4" (Typ.)

2 Per Connection ~

14GA 5mm PerforatedScreen 50% Open

1 1 /4" x 1 /2" x 1 /2"12GA U-Channel

DETAIL AStiffener (Typ. )N.T.S.

3/8" x 3"Wedge Anchor,2 Per Connection (Typ.)

ADS FLEXSTORM ICPS U

PLAN, ELEVATION, ANDDETAIL

~~

Cy

LOS ANGELES COUNTYDEPARTMENT OF PUBLIC WORKS

0 ACCEPTED0 MAKE CORRECTIONS NOTED1:3 REVISE CALCULATIONSEl REJECTED

REVIEW IS PERFORMED BY TtE DEPARTMENT TO ENSURETHE CONTRACTOR'S GENERAL CONFORMANCE WITH THEDESIGN CONCEPT OF THE PROJECT AND GENERAL CON.PLIANCE WITH THE SPECIFICATIONS. THE CONTRACTORIS SOLELY RESPONSIBLE FOR THE CORRECTNESS OFDIMENSIONS, PROPER CONSTRUCTION AND INSTALLA-TION METHODS, AND FOR FULFILUNG ALL CONTRACTUALREQUIREMENTS. ACCEPTANCE INDICATED HEREONDOES NOT RELIEVE THE CONTRACTOR OF THESE 0131.§.CATIONS.

BY DATE...........--- .

X

Steven Dickson 07-28-16

2

y:-=s:

C3/16" Self Drilling Screw(Typ.) Placed 8"C.C.(Max)(Typ.)

1 Piece Extension Panel

~.~~.•.. ,

c

~ ~ Horizontal Stiffener

y~ ----~. ~, ~ ~ ~ i ~ ~ ~~

'x .~~.~— — — -- --~~ - _ ._

CO ,1 Piece E~ension Panels 114GA 5mm Perforated ~

Screen 50% Open ~`

3" Base Support BracketSee Detail B Hereon

14GA 5mm PerforatedScreen 50% Open

D

~~

2" x 2" x 3" 14GA 5nPerforated Base Suppc

Brac{

Ex. CatchBasin Floor

---------------DETAIL BN.T.S.

A

JA

ELEVATION VIEWN.T.S.

1 Piece ExtensionPanel 14GA 5mmPerforated Screen50% Open

1 1/2" x 1 1/2" 13GAMounting Bracket (Typ.)

See Detail A,Sh. 1 (Typ.)

E~ension Panel Scribed ToConform To Catch Basin Floor

1 Piece E~ension Panel14GA 5mm Perforated

Screen 50% Open

3/16" Self Drilling Screw (Typ.)

2" x 2" x 3" 14GA 5mm PerforatedBase Support Bracket

3/16" Self Drilling Screw (Typ.)2 Min. Per Bracket

~Ex. Catch Basin

3/8" x 3° — _ Floor

Wedge Anchor ----- ~ ~ ~ ---- ---~TYP~)

SECTION A-A ADS FLEXSTORMN.T.S. CPS U

EXTENSION PANEL DETAILS

~ 14GA 5mm Perforatedi Screen 50% Open

1" (Min.)~TYp~)

~Horizontal 1 1/4" x 1/2" x 1/2"12GA U-Channel Stiffener

c

A

1

LOS ANGELES COUNTYDEPARTMENT OF PUBLIC WORKS

0 ACCEPTED0 MAKE CORRECTIONS NOTED1:3 REVISE CALCULATIONSEl REJECTED

REVIEW IS PERFORMED BY TtE DEPARTMENT TO ENSURETHE CONTRACTOR'S GENERAL CONFORMANCE WITH THEDESIGN CONCEPT OF THE PROJECT AND GENERAL CON.PLIANCE WITH THE SPECIFICATIONS. THE CONTRACTORIS SOLELY RESPONSIBLE FOR THE CORRECTNESS OFDIMENSIONS, PROPER CONSTRUCTION AND INSTALLA-TION METHODS, AND FOR FULFILUNG ALL CONTRACTUALREQUIREMENTS. ACCEPTANCE INDICATED HEREONDOES NOT RELIEVE THE CONTRACTOR OF THESE 0131.§.CATIONS.

BY DATE...........--- .

X

Steven Dickson 07-28-16

2

Ex. Connector Pipe

B

I~ See Detail C Hereon D

~ ~ ,---,

Ex. CatchBasin Wall 10" - ~ - ~ 3/8•• x 3"

~TYp~) / Wedge A T hor

-- - ,- -:~ C Yp ),, _,/

J14GA 5mm Perforated ~ _ ~~;Screen 50% Open J _ Ex. Catch

g _, Basin Wall~J

2R ~ ~„ -

PLAN VIEW ~TYp.) _"- ~ -~- , ; C_,,~_ ~~ ~~N.T.S. -~

1" Bend 90° - 3" (Max)(Typ.)Around Rear And 2 Sides _ _ _ _ _ _ __ J J ~!~ +

Of Perforated Screen ~- - '1'ti. ~~

DETAIL CN.T.S. Spot Weld (Typ.)

10" x 6" x 1 1/2" ELEVATION VIEW14GA Deflector Support N.T.S.

Bracket (Typ.)

3/8" x 3"Wedge Anchor

~TYp ~ )

X 10" (Typ. )

14GA 5mm Perforated See Detail H Hereon~ Screen 50% Open ~, ~~

`.~.'

1/2" Dia. HoleFor OptionalSide Wall Mount

Ex. CatchBasin Wall

SECTION B-BN.T.S.

0

10" x 6" x 1 1 /2"14GA Deflector SupportBracket (Typ.)

14GA 5mm PerforatedDeflector Screen

~~-

~" ~TYP~)

1 /2" (TYPO

DEl"AIL DN.T.S.

ADS FLEXSTORMCPS U 0

DEFLECTOR DETAIL

2 1

LOS ANGELES COUNTYDEPARTMENT OF PUBLIC WORKS

0 ACCEPTED0 MAKE CORRECTIONS NOTED1:3 REVISE CALCULATIONSEl REJECTED

REVIEW IS PERFORMED BY TtE DEPARTMENT TO ENSURETHE CONTRACTOR'S GENERAL CONFORMANCE WITH THEDESIGN CONCEPT OF THE PROJECT AND GENERAL CON.PLIANCE WITH THE SPECIFICATIONS. THE CONTRACTORIS SOLELY RESPONSIBLE FOR THE CORRECTNESS OFDIMENSIONS, PROPER CONSTRUCTION AND INSTALLA-TION METHODS, AND FOR FULFILUNG ALL CONTRACTUALREQUIREMENTS. ACCEPTANCE INDICATED HEREONDOES NOT RELIEVE THE CONTRACTOR OF THESE 0131.§.CATIONS.

BY DATE...........--- .

X

Steven Dickson 07-28-16

1

1

2

2

3

3

4

4

A A

B B

C C

D D

SHEET 1 OF 1

DWG NOSIZE

SCALE

REV

FLEXSTORM-CPSC A

©

CPS

FRAME TYPE

ALAMEDA COUNTY MOSQUITO

ABATEMENT DISTRICT HINGED LID DESIGN

HINGED LID SHOWN IN OPEN POSITION

(REMAINS IN OPEN POSITION ON ITS OWN)

LID BRACKETS SECURED TO

WALL WITH SS WEDGE ANCHORS

STAINLESS STEEL HINGE WELDED

TO LID AT EACH SUPPORT BRACKET

ADS CPS Model #LSCREEN

(ft)

HSCREEN

(in)

H BYPASS

(in)

H (depth of water to

centroid of bypass)

G (min distance

from flow line to

top of lid)

V-DEPTH Q BYPASS (CFS)

3L8H-8BU 3 8 8 8 4 2.5 7.9

3L8H-13BU 3 8 13 20 13 3.5 19.9

3L8H-16BU 3 8 16 30 22 4.5 30.5

3L9H-9BU 3 9 9 15 10 3 11.9

3L10H-8BU 3 10 8 9 4 2.7 10.4

3L11H-9BU 3 11 9 9 4 2.8 9.1

3L11H-13BU 3 11 13 23 16 4 21.4

3L12H-8BU 3 12 8 10 4 2.8 13.2

3L12H-8BU 3 12 8 12 6 3 14.4

3L12H-10BU 3 12 10 9 4 3 10.4

3L12H-10BU 3 12 10 17 12 3.5 14.3

3L12H-16BU 3 12 16 26 18 4 28.3

3L12H-16BU 3 12 16 32 24 4.5 31.5

3L16H-12BU 3 16 12 10 4 3.5 13.2

3L16H-12BU 3 16 12 18 12 12 17.7

3L18H-8BU 3 18 8 15 6 3.5 24.2

3L18H-10BU 3 18 10 17 12 4 14.3

3L18H-16BU 3 18 16 12 4 4 19.3

3L18H-16BU 3 18 16 18 10 4.5 23.6

3L20H-12BU 3 20 12 12 6 4 14.4

3L22H-12BU 3 22 12 18 12 4.5 17.7

3L24H-12BU 3 24 12 14 8 4.5 15.6

3L24H-16BU 3 24 16 18 10 5 23.6

4L8H-8BU 4 8 8 8 4 2.5 10.5

4L9H-9BU 4 9 9 15 10 3 15.9

4L9H-14BU 4 9 14 18 11 3.5 27.5

4L10H-8BU 4 10 8 9 4 2.7 13.9

4L10H-8BU 4 10 8 15 10 3 17.9

4L11H-16BU 4 11 16 21 13 4 34

4L12H-8BU 4 12 8 10 4 2.8 17.6

4L12H-8BU 4 12 8 12 6 3 19.3

4L12H-10BU 4 12 10 17 12 3.5 19.1

4L15H-12BU 4 15 12 19 13 4 24.2

4L15H-18BU 4 15 18 22 13 4.5 39.1

4L16H-12BU 4 16 12 18 12 12 23.6

4L10H-8BU 4 18 8 15 6 3.5 32.3

4L18H-10BU 4 18 10 17 12 4 19.1

4L18H-12BU 4 18 12 22 16 4.5 26.1

4L18H-16BU 4 18 16 12 4 4 25.7

4L18H-16BU 4 18 16 18 10 4.5 31.5

4L18H-18BU 4 18 18 25 16 5 41.7

4L20H-12BU 4 20 12 12 6 4 19.3

4L22H-12BU 4 22 12 18 12 4.5 23.6

4L24H-12BU 4 24 12 14 8 4.5 20.8

4L24H-16BU 4 24 16 18 10 5 31.5

5L8H-13BU 5 8 13 20 13 3.5 33.2

5L9H-9BU 5 9 9 15 10 3 19.8

APPENDIX U: ADS FLEXSTOM CPS SELECTION GUIDE

ADS CPS Model #LSCREEN

(ft)

HSCREEN

(in)

H BYPASS

(in)

H (depth of water to

centroid of bypass)

G (min distance

from flow line to

top of lid)

V-DEPTH Q BYPASS (CFS)

APPENDIX U: ADS FLEXSTOM CPS SELECTION GUIDE

5L10H-8BU 5 10 8 15 10 3 22.4

5L10H-16BU 5 10 16 28 20 4.5 49

511H-13BU 5 11 13 23 16 4 35.7

5L12H-10BU 5 12 10 9 4 3 17.4

5L12H-10BU 5 12 10 17 12 3.5 23.9

5L12H-16BU 5 12 16 32 24 5 52.4

5L14H-14BU 5 14 14 25 18 4.5 40.5

5L15H-12BU 5 15 12 19 13 4 30.3

5L15H-18BU 5 15 18 22 13 4.5 48.9

5L16H-12BU 5 16 12 10 4 3.5 22

5L16H-12BU 5 16 12 18 12 12 29.5

5L18H-10BU 5 18 10 17 12 4 23.9

5L18H-12BU 5 18 12 22 16 4.5 32.6

5L18H-18BU 5 18 18 25 16 5 52.1

5L22H-12BU 5 22 12 18 12 4.5 29.5

Con

COUNTY OF LOS ANGELESDEPARTMENT OF PUBLIC WORKS

APPENDIXA-1: CPS CONFIGURATION

Support bars(optional}

~r Pipe(CPS)

~ ~,~o% }-- Curb opening ~

C i ~G

s 1 IHb

~ r ~

Hs ~ '-~-----=z~.~=~- --

CATCH BASIN INTERIOR VIEW(Not to scale)

CPS Length L = A+ 2BCPS Height a# projected slope HsBypass Height HbMinimum Wall Clearance C > = 4"Minimum Bar Spacing S > = 6"Minimum Interior Spacing B > = 10"Minimum Distance from Flow Line G > = 4"

Deflector(when needed}

ConnectorPipe

NOTES

1. The CPS shown above is for illustrative purposes onl .The catch basinconnector pipe location and the shape and design of ~he CPS may significantlydeviate from the above example.

2. For Grated Catch Basins, "G" shall be measured from the top of grateto the top of the CPS deflector plate.

APPENDIX B -CPS SIZING TABLE Revised 5/20/2015

TABLE 2CPS SIZING TABLE FOR SUMP CONDITIONS WITH NO ARS

Catch BasinType

~`V-depth~ft~

CB Width(ft)

No.Grates

MINIMUMBypass Height

Hb ~i~)Screen Height

HS (in)MINIMUM Screen

Length L (ft)G (in)

300

2.5(30 inch)

3.5 - 8 8 4.0 4

2.6732 inch

3.5 - 8 10 4.0 4

2.83(34 inch)

3.5 - 9 11 3.0 47 - 9 11 5.5

3.03.5 - 10 12

3.0 4

7 - 5.0

3.5

3.512 16 3.0 4

7 - 5.0

1014 14 6~0 4

14 - 7.0

4.0

3.5 -

16 18

3.0

47 -

4.0

10 - 6.0

14 - 6.0

21 -

18

~ 6 7.0 4

28 - 10.0

4.5

3.5 -

16 18

3.0

10~ 4~010 - 6.0

14 - 6.0

2118 16 7.0 10

28 - 8.0

5.0 or greater

3.5 -

16 24

3.0

> 10~ 4~010 - 6.0

14 - 6.0

2118 20 7.0 >_12

28 - 8.0

301

3.5 7 1 14 9 4.0 11

4.0 ~ ~ 16 11 4.0 1310 2 6.0

4~5

7 1

18 15

4.0

1314 1

5.0

14 2 6.0

5.0

7 1

~8 18

4.0

1610 2

6.014 1 5.0

14 2 6.0

302

<_ 4.0 - 1 NOT APPLICABLE

4.0 2 14 8 2.5 18- 3 6.0

4.5

- 1 16 8 2.5 22

- 216 10

5.020

- 3 7.0

5.0

- 1

16 12

2.5

24- 2 5.0

- 3 7.0

303

3.5 ~ 13 8 2~5 13- 2 5.0

4.0

- 1

13 11

2.5

16- 2 5.0

- 3 7.0

4.5

- 1 16 12 2.5

18- 214 14

5.0

- 3 7.0

* for CBs with v-depth less than given value, contact the District for Hb, Hs, L, and G values.