addendum no. 2thecreelcompany.com/pdf/addendumno2.pdf2100 riverhaven drive, suite 100 birmingham, al...

KREBS 17045 ADDENDUM NO. 2

PAGE 1 Krebs Engineering, Inc. 2100 Riverhaven Drive, Suite 100 Birmingham, AL 35244 205-987-7411 March 30, 2018 ADDENDUM NO. 2 CONTRACT NO.: 17045 OWNER: Anniston Water Works and Sewer Board PROJECT: Fort McClellan WWTP Improvements BID DATE: April 5, 2018 TO: ALL PROSPECTIVE CONTRACTORS AND SUPPLIERS The changes, modifications, and/or additions covered by and set forth in this Addendum No. 2 shall become part of and be incorporated in the Contract Documents for the above referenced project: BIDDING CLARIFICATIONS: AD2.1 References to the Trickling Filters are the current day structures called Peak Flow

Basin No. 1 and No. 2. The two concrete structures were previously used as Trickling Filters, but are currently used as Peak Flow Basins. The Contractor is responsible for removal of all media, pipe, and debris from the Trickling Filters (Peak Flow Basin No. 1 and No. 2) and legally disposing of it off-site or at locations identified on the drawings. In addition, the media may be used as fill material at areas approved by the engineer if Alternate No. 1 is selected. In all cases the media must be chocked-off with fine material and topsoil added if located in grass areas.

AD2.2 Crack repair and concrete coatings for the Peak Flow Basin Nos. 1 and 2 are just for

the Alternate Bid Item No. 2 and No. 3. No crack repair or concrete coatings for Peak Flow Basin Nos. 1 and 2 are included in the Base Bid.

AD2.3 Structures identified as being demolished will be drained by the Owner to the

greatest extent possible using existing plant pumping systems and pipelines. Any remaining solids inside structures identified as being demolished shall be removed from the site and disposed of legally by the Contractor.

SPECIFICATIONS TO BE REVISED BY ADDENDUM: AD2.4 Specification Section 01 10 00, Summary, Section 1.6 Work Sequence, A.1.

Milestone Dates, change paragraph b to: The improvements to the Aeration Basin shall be complete no later than January 1,

2019. This shall include all equipment improvements, instrumentation, and electrical work.


PAGE 2 AD2.5 Specification Section 33 11 16.10, Metal Pipe and Fittings for Water Utilities, add the

following section:

2.7 STAINLESS STEEL PIPE

A. Stainless steel pipe and fittings shall conform to the requirements of ANSI/ASTM A778, latest revision, Grade TP 304.

B. Stainless steel pipe shall be furnished in accordance with nominal pipe sizes and nominal wall thicknesses given in Table 1 of the American National Standard for Stainless Steel Pipe (ANSI B36.19, latest revision).

C. Pipe sizes and Schedules (nominal wall thicknesses) shall be Schedule 10. Flanges, nuts and bolts shall also be made of stainless steel unless otherwise specifically shown on Drawings.

D. All fittings shall be forged fittings unless otherwise specifically shown

on the Drawings.

E. Flanged pipe ends shall be made of type 304L stainless steel slip-on type rolled angel face rings and stainless steel back-up flanges drilled to ANSI 16.1 class 125 standard. The angle face ring thickness shall be continuously welded on both sides to the pipe or fitting. The angle leg shall not interfere with the flange bolt holes.

AD2.6 Specification Section 44 42 13, Aeration Equipment, Section 2.1 Manufacturers, C. Floating Aerator, Add the following Manufacturer:

3. Aerator Solutions AD2.7 Specification Section 44 46 26, Clarifier, Section 2.3 Effluent Weirs and Baffles,

Paragraph H., Replace in its entirety with the following: H. Scum baffle panels and splice plates shall be ¼” thick plastic laminate.

Dimensions of the scum baffle and brackets shall be as shown on the drawings. The scum baffle panels shall be 12’ in length unless otherwise noted. The scum baffle brackets shall be FRP angle with slotted holes to provide horizontal, vertical, and radial adjustment of the baffle. Fastening holes in the scum baffle panel shall be countersunk to accommodate flat head fasteners. Cuts ends of non-standard lengths shall be sealed with resin.

DRAWINGS TO BE REVISED BY ADDENDUM: AD2.8 Replace Sheet C3-02A, Overall Site Grading Plan (Alternate), in its entirety with the

attached Sheet C3-02A.


PAGE 3 AD2.9 Replace Sheet C4-02, Headworks Modification Mechanical Sections, in its entirety

with the attached Sheet C4-02. AD2.10 Replace Sheet C6-01, Final Clarifiers No. 1 and No. 2 Modification Plan and Section,

in its entirety with the attached Sheet C6-01. AD2.11 Replace Sheet S8-02, Post Aeration Structural Sections, in its entirety with the

attached Sheet S8-02. AD2.12 Replace Sheet S9-01, Parshall Flume Structural Plan and Sections, in its entirety

with the attached Sheet S9-01. AD2.13 Replace Sheet C10-01, UV Basin Modification Mechanical Plan and Sections, in its

entirety with the attached Sheet C10-01. AD2.14 Sheet DT-04, Miscellaneous Details, Block A1, Change the following: “Coat Interior Walls of Manhole with Coal Tar Epoxy, Min. 30 MILS DFT” to “Coat

Interior Walls of Manhole with Permite PCS-9043 Type II or Equivalent” This Addendum No. 2 shall be attached to the front of your set of specifications and made a part

of the Contract Documents. Receipt of this Addendum No. 2 shall be acknowledged on Page 4

of the Proposal Form.

Krebs Engineering, Inc. By____________________________

BASIN

POST AERATION

FLUME

PARSHALL

STATION

RETURN PUMP

(EXTENDED)

HEADWORKS

FENCE

CHAIN LINK

FENCE

CHAIN LINK

ENTRANCE GATE

CANTILEVER A7

DT-02

A7

DT-02

A7

DT-02

METER VAULT

RAS FLOW

METER VAULT

WAS FLOW

G1

C3-09

JUNCTION BOX

PEAK FLOW BASIN

HANDRAIL

ALUMINUM D7

DT-03

G7

C3-09

G1

C3-10

LEVEL INDICATOR

ULTRASONIC

MODIFICATIONS

JUNCTION BOX No. 2

G10

C3-10

LEVEL INDICATORS

WEIR & ULTRASONIC

V

8"

DI

701

702

704

703

702

699

699

697

697

696

697

698

699

694

693

694

694

693

692

694

694

693

692

691

691 6

91 6

93

692

692

692

693

694 69

6

699

698

698

711

712

713

699

696

698

698

697

708

709

706

707

706

707

706

703

709

720

725

730

715710

705

700

700

695

710

700

695

700

705

730

725

720

715

710

705

710

715

700

705

710

710

715

720

725

705

710

700

695

690

690

P

P

P

P

P

CRANE

V

V

V

V

V

V

V

V

V

V

V

VV

V

F

AERATION BASIN

RIP-RAP

720

715

705

700

705

710

V

V

V

698

697

694

V

AC

ET

ET

ET

697

695

Sheet Title

Sequence

Sheet No.

Revisions

No. Date

Designed

Drawn

Project No.

Checked

of

Issue Date

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

A

B

C

D

E

F

G

H

J

K

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A

B

C

D

E

F

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92

Description

3/2

9/2

018

4:5

6:3

0 P

M

P:\bha

m\A

NNIS

TO

N\1

7045_FtM

cClellan_

WW

TP_

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n\Dra

win

gs\1

7045

C3-0

2A.d

gn

BH

M-E

NG

L-0

5

17045

© 2018 KREBS ENGINEERING, INC.

CLO

STL/NDW

CLM/TTM

SE

WE

R B

OA

RD

AN

NIS

TO

N W

AT

ER W

OR

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FO

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WTP I

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A

FEB., 2018

K

L

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693

692

694

695

696

695

696

694

694

696

695

693

699

700.25

699.50

700

699.75

4020

1 INCH = 40 FT.

040

C3-02A 1" = 40'PLANA1

WT-1-92

WT-2-92

WT-14-92

WT-12-92

WT-3-92WT-13-92

WT-4-92

WT-6-92

WT-5-92

WT-9-92

WT-8-92

WT-11-92

GEOTECHNICAL LEGEND

WT-X-92OF SOIL BORINGAPPROXIMATE LOCATION

(ALTERNATE)

GRADING PLAN

OVERALL SITE

EL. 698.53

EL. 689.60±

WSE 696.53

HANDRAIL

ALUMINUM

2'-5"±

EL. 696.13

8'-0" WEIR 5'-1"±

D7

DT-03

K12

--

1/4" = 1'-0"

SECTION - WEIR @ PEAK FLOW BASIN No. 1 & 2 (ALT. No. 2)K12

D7

DT-03HANDRAIL

ALUMINUM

No. 1

ALTERNATE

No. 1

ALTERNATE

25

ALABAMA WASTEWATER TREATMENT MODERNIZATION.

OF ENGINEERS AS PART OF THE 1992 FORT McCLELLAN,

NOTE: GEOTECHNICAL DATA PROVIDED BY U.S. ARMY CORPS

NOTE: CUT EXISTING CONCRETE WALL TO DIMENSIONS SHOWN.

COATINGS.

ALTERNATE No. 3: PEAK FLOW BASIN No. 1 AND No. 2 SOUTHWEST WALL INTERIOR SURFACE PROTECTIVE

WALL.

ALTERNATE No. 2: PEAK FLOW BASIN No. 1 AND No. 2 CONCRETE CRACK REPAIR ALONG SOUTHWEST

BETWEEN PEAK FLOW BASIN No. 1 AND No. 2.

AND No. 2, ALUMINUM HANDRAIL ALONG THE SAME WALL, AND NEW WEIR CUT

ALTERNATE No. 1: INCLUDE GRADING (FILL) ALONG SOUTHWEST WALL OF PEAK FLOW BASIN No. 1

2 03/29/2018 ADD. NO. 2

5/8 CAP REBAR

IPF

ALABAMA STATE ROUTE #2

1

SOUTH BOUND McCLELLAN BLVD

EL:700.42

E:664343.58

N:1174361.38

PK NAIL #1

EL:696.82

E:663955.96

N:1174669.18

PK NAIL #2212

EL: 705.982

BM 32101-LA1

RR SPIKE

BUILDING

CONTROL

ST

OR

AGE B

UIL

DIN

G

STATION

GREASE PUMP

PS

RAS/WAS

STATION

PUMPING

PEAK FLOW

JB3

JB4

JB2

JB1

STATION

PUMPING

FILTRATE

HEADWORKS

DRYING BEDS

SLUDGE

No. 1

CLARIFIER No. 2

PEAK FLOW BASIN

No. 3

PEAK FLOW BASIN

No. 1

PEAK FLOW BASIN

No. 2

CLARIFIER

SHOP

GENERATOR/

UV BASIN

BLDG.

PUMP

SLUDGE

CO

BOX No. 2

JUNCTION

BOX No. 1

JUNCTION

FENCE (TYP.)

EX. CHAIN LINK

FENCE (TYP.)

EX. CHAIN LINK

BOX No. 3

JUNCTION

DIGESTER

AEROBIC

Sheet Title

Sequence

Sheet No.

Revisions

No. Date

Designed

Drawn

Project No.

Checked

of

Issue Date

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

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B

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FEB., 2018

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33'-8"1'-0"

EL. 716.50

EL. 711.50

EL. 709.50

RECONDITION EX.

SELF CLEANING

SCREEN

1'-0"

4'-0"1'-0"1'-0"

1/2" EXPANSION

MATERIAL (TYP.)

EL. 706.07

EL. 704.82

ALUMINUM

HANDRAIL

(TYP.)

ALUMINUM

GRATING (TYP.)

D7

DT-03

K1

DT-03

1'-0"8"

3'-0"

3'-0"

EL. 716.50

EL. 711.50

EL. 709.50

4'-0"2'-5"

1/2" EXPANSION

MATERIAL

8"8" 4'-0"

RECONDITIONED

SELF CLEANING

SCREEN

SELF CLEANING

SCREEN

GRIT AUGER

EL. 706.07

EL. 704.82

1'-0"1'-0"

GRAVITY SLUICE FROM

RECONDITIONED SCREEN

TO NEW COMPACTOR.

EQUIP SLUICE WITH

FLUSHING CONNECTION

4" AIR PIPING

SUBMERGED

AIR DIFFUSERS

BLOWER

ELECTRICAL

CONTROLS

EL. 713.17

NOTESH13

1

2

3

4

5

6

7

8

9

FITTINGS LISTD13

C4-02

MECHANICAL SECTIONS

MODIFICATION

HEADWORKS

1/4" = 1'-0"SECTIONA9 1/4" = 1'-0"SECTIONA1

SUPPORT COLUMN

STRETCH CABLE

3'-6"

LOOP DEPTH

TOWING TROLLEY

CABLE TROLLEYWIRE ROPE

PLASTIC COATED

END CLAMP

FLAT CABLE

FLAT CABLE

F9 NO SCALEFESTOON SYSTEM DETAIL

4" D.I. PIPE

(TYP. FOR 4)

SLIDE GATE

48" SQ. ST. STL.

INDICATOR

FLOAT LEVEL

1'-0" 9'-4"2'-5"15'-6"2'-5"4'-0"

4'-0"

2'-5"

45° 4

5°

7'-1"

C LC L

8"

4'-0"

2'-6"

PIPE TRENCH

1'-0"

14'-6"±

GRIT AUGER

AUGER TO

CONNECT SCREEN

GRIT CLASSIFIER

3'-0"

43'-4"

11'-5"

SCREEN

SELF CLEANING

RECONDITIONED

4" D.I. WATER

(PROVIDED BY OWNER)

RECEPTACLE

SCREENING AND GRIT

DRAIN

CLASSIFIER

6" D.I. GRIT

D13

DT-04

1/4" = 1'-0"ENLARGED PLANF1

EX. FLEXIBLE HOSING

DISCHARGE PIPE TO

CONNECT NEW 4" D.I.

1'-0" 1'-0"

DIFFUSERS (TYP.)

SUBMERGED AIR

DISCHARGE

GRIT

J9 3/16" = 1'-0"SECTION

EQUIPMENT

ELEVATION FOR NEW

AND TROUGH. ADJUST

EX. GREASE BEACH

A13

C4-01

A1

C4-02

A1

C4-02

A9

C4-02

A9

C4-02

3'-0"

1'-0"

8" 3'-0"

PUMP

GREASE

RETAINING WALL

CONCRETE

36

FITTINGS LISTF13

1

13

2

2

45 5 6

9

7

8

9

8

7

SCREEN

SELF CLEANING

DIRECTLY TO RECEPTACLE

DISCHARGE SCREENINGS

2 03/29/18 ADD. NO. 2

GRIT PUMP

BRIDGE

TRAVELING

HANDRAIL

1 1/2" GALV. STL.

PIPE

GRIT DISCHARGE

FLEXIBLE HOSE

ASSEMBLY

SKIMMER ARM

COLUMN

FESTOON

ADJUSTED TO THE ELEVATIONS SHOWN.

NOTE: EXSTING GREASE BEACH AND TROUGH SHALL BE

INSULATE ALL EXPOSED PIPE.

SCREEN AND COMPACTOR WASH/SPRAY SYSTEM. HEAT TRACE AND

2. BLIND FLANGE TAPPED FOR CONNECTIONS TO THE MECHANICAL

PIPE AT BOTH TAPS.

ON EACH SIDE OF VALVE. INCLUDE 3/4" BALL VALVE & GALVANIZED

1. 6" PLUG VALVE SHALL HAVE 3/4" THREADED HOSE CONNECTIONS

NOTES:

4" D.I. BLIND FLANGE (SEE NOTE 2)

4" D.I. PIPE, FLG-PE

4" D.I. 90° BEND, PE-MJ

4" D.I. PIPE, FLG-FLG

4" D.I. 90° BEND, FLG-FLG

6" D.I. PLUG VALVE, FLG-FLG (SEE NOTE 1)

6" D.I. PIPE, FLG-PE (INV. 707.40)

6" D.I. PIPE, FLG-FLG

6" D.I. 90° BEND, FLG-FLG

Sheet Title

Sequence

Sheet No.

Revisions

No. Date

Designed

Drawn

Project No.

Checked

of

Issue Date

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

A

B

C

D

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Description

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(CLARIFIER NO. 1)

16" EFFLUENT LINE

LINE

6" SCUM

(CLARIFIER NO. 1)

18" INFLUENT LINE

INFLUENT CHANNEL

EFFLUENT CHANNEL

INSI

DE SCUM

BAFFLE

DIAMETER

= 64'-0"

INSIDE TANK DIAMETER = 70'-0

"

ROTATION

TRUSS

SKIMMER

(CLARIFIER NO.1)

SCUM TROUGH

WEIR GATE

SCUM BOX &

HEADER

TOEPLATE

W/HANDRAIL &

ACCESS BRIDGE

WALKWAY

TOP OF

MANIFOLD

DRIVE CAGE

DEFLECTOR BLADE

12" RETURN SLUDGE LINE

TRUSS

(CLARIFIER NO. 1)

16" EFFLUENT LINE

SID

E

WA

TE

R

DE

PT

H

HEADER

EL. 702.00±

FINISHED GRADE

AT SIDEWALL

TOP OF GROUT

EL. 702.23

TOP OF WALL

CHANNEL BOTTOM

EL. 700.08

BAFFLE

TARGET

SURFACE

MAX. WATER

TOEPLATE

W/HANDRAIL &

ACCESS BRIDGE

ASSEMBLY

SKIMMER

SCUM BLADE

FULL RADIUS

SKIMMER

RACEWAY

SCUM BAFFLE

EFFLUENT WEIR

SCUM BLADE

FULL RADIUS

DRIVE UNIT

(TYP.)

TIE RODS

(TYP.)

ASSEMBLY

TIE-ROD

SCUM BLADE

FULL RADIUS

SUPPORT

SKIMMER

SKIMMER

RACEWAY

(EL. 701.20)

FRP EFFLUENT WEIR

FRP SCUM BAFFLE

(CLARIFIER No. 2 ONLY)

REPLACE CENTER PIER

(TYP.)

FRP SKIRT BAFFLEASSEMBLY

TIE-BARASSEMBLY

TIE-ROD

SQUEEGEES

HEADER

F1 1/8" = 1'-0"PLAN

A1 1/8" = 1'-0"SECTION C6-01

90°

ELEVATION WEIR PLATE

STANDARD WEIR PLATE = 11'-11"

1'-11 3/4"STANDARD WEIR 4 SPACES @ 2'-0" O.C. = 8'-0"1'-11 3/4"

9 1/2"

4 1/2"

5 3/4" 5 3/4"11'-0"

A9

1/4" X 9 1/2" FRP WEIR PLATE

5 HOLES 2 5/8" Ø

(2 PLACES)

2 1/2" RAD

TYP.3/16"

1'-3"

1'-6"

4'-0"4'-0"4'-0"

12'-0"

& NUTS IN SCUM BAFFLE

HD. SCREWS, WASHERS

TYPE 316 ST. STL. FLAT

7/16" WIDE FOR 3/8" LG.

3 3/4"

4" 4"

1'- 2 1/4"

3 3/4"

10 1/2"

5"

C SPLICE (12'-0" O.C.)L

HOLE IN BRACKET

9/16" WIDE X 1 1/4" LG. SLOTTED

(BEHIND)

BUTT PLATE

ENDS OF PLATE

1/2" SPACE BETWEEN

WEIR PLATE

1/4" X 9 1/2" FRP

9"

1'- 6"

V-NOTCH WEIR PLATE

1/4" X 9 1 / 2 FRP

1"=1'-0"ELEVATION SCUM BAFFLE PLATED9

K9

--

5 HOLES - 2 5/8" DIA.

12"

5" 8 1/4"

8" 1/4"

1/2"

NUTS & WASHERS

EXP. ANCHORS W/ ST. STL.

5/8" x 6" LG. TYPE 316 ST. STL.

& WASHERS

MACHINE BOLTS, NUTS

1/2" TYPE 316 ST. STL.

SCUM BAFFLE

1/4" X 1'-6" FRPIN WEIR TO MATCH EXISTING

BOTTOM OF V-NOTCH

THE NUT (TYP.)

THAN 1/4" PAST

PROTRUDE MORE

BOLTS MUST NOT

NUTS & WASHERS

EXP. ANCHORS W/ ST. STL.

5/8" x 6" LG. TYPE 316 ST. STL.

SCUM BAFFLE

FLAT HD. SCREWS, WASHERS & NUTS IN

7/16" WIDE FOR 3/8" LG. TYPE 316 ST. STL.

1 1/16" HOLES IN BAFFLE SUPPORT BRACKET

1/4" x FRP PLATE

SCUM BAFFLE

SPACING = 6" V-NOTCH

2 1/2"

2 1/2"

1 1/4"

1 1/2"

1 1/2"

NOTE: ADJUST DIMENSIONS AS RECOMMENDED BY MANUFACTURER (TYP.)

NOTE: ADJUST DIMENSIONS AS RECOMMENDED BY MANUFACTURER (TYP.)

BAFFLE

1/4" x FRP SCUM

AND SECTION

MODIFICATION PLAN

No. 1 AND No. 2

FINAL CLARIFIERS

K9

--

K9

--

K9

--

1" = 1'-0"EFFLUENT WEIR & SCUM BAFFLEK9

1 1/2" = 1'-0"WEIR PLATE SPLICE G13G9 1 1/2" = 1'-0"SCUM BAFFLE SPLICE

1" = 1'-0"

NO SCALESKIRT BAFFLE DETAILK13

K13

--

2'-6"

3'-2 5/8"

3"

3"3"

R = 35'-0"± R = 32'-6"±

PLATE

SLOTTED HOLES IN BUTT

4-7/16" WIDE FOR 3/8" LG.

SKIRT BAFFLE

NUT, AND WASHER (TYP.)

1/2" x 5" EPOXY ANCHOR,

LOCK WASHER

NUT, (2) WASHERS,

1/2" x 1-1/2" HHMB,

BAFFLE

1/4" FRP SKIRT

SIDES OF SKIRT BAFFLE

CONTINUOUS BOTH

ANGLE 3/16" x 3" x 3"

ROLLED ALUMINUM

EL. 696.20±

BOTTOM OF S.B.

CHROMATE PRIMER.

SHOP COAT OF BITUMASTIC PAINT OR ZINC

WITH CONCRETE SHALL RECEIVE A HEAVY

NOTE: ALL ALUMINUM SURFACES TO BE IN CONTACT

DETAILS. CONTRACTOR RESPONSIBLE FOR INSTALLATION.

SHALL BE PROVIDED BY KUSTERS. SEE KUSTERS SCOPE OF SUPPLY FOR ADDITIONAL

SQUEEGEES AND BACKING PLATES, AND CENTER PIER (CLARIFIER No. 2 ONLY)

6. SKIMMER ASSEMBLY, TIE ROD ASSEMBLY, MANIFOLD SEALS AND BACKING PLATES, HEADER

5. V-NOTCH WEIR ELEVATION SHALL MATCH THE EXISTING WEIR ELEVATION.

PRIOR TO WEIR & SCUM BAFFLE INSTALLATION.

4. CONTRACTOR SHALL VERIFY ALL DIMENSIONS & ELEVATIONS OF EXISTING CLARIFIERS

3. AS A MINIMUM, ONE CLARIFIER SHALL REMAIN IN OPERATION AT ALL TIMES.

UNLESS SPECIFICALLY STATED OTHERWISE.

2. CLARIFIER No.1 SHOWN ON PLAN. WORK REQUIREMENT IS THE SAME FOR CLARIFIER No.2

EFFLUENT PIPE & APPURTENANCES (ALL FERROUS METAL).

BRIDGE SUPPORT SYSTEM, CENTER PIPE, NEW SKIMMER ARM/ SCUM ARM, SCUM BEACH,

1. APPLY NEW PROTECTIVE COATING SYSTEM ON CLARIFIER COLLECTION MECHANISM,

NOTES:

39

WASHER

4" SQ. FRP

LOCATED @ 4'-0" O.C.

SUPPORT BRACKETS

FRP SCUM BAFFLE

ON CENTERLINE

WITH 1" x 2" LG. SLOT

1/4" FRP BUTT PLATE

W/ BOLT HOLE ON CENTERLINE5" SQ. x 1/4" FRP WASHER

2 3/29/2017 ADD. NO. 2

Sheet Title

Sequence

Sheet No.

Revisions

No. Date

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Drawn

Project No.

Checked

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Issue Date

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CLO

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CLM/TTM

SE

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FEB., 2018

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S8-02

3/8" = 1'-0"SECTIONG1

3/8" = 1'-0"SECTIONA1

SECTIONS

STRUCTURAL

POST AERATION

1'-0"1'-0"6'-0"1'-0"6'-0"1'-0"1'-0"

1'-6" 3'-0" 3'-0" 1'-6"

10'-0"

1'-6"2'-0"1'-6"2'-0"1'-6"2'-0"1'-6"6" 6"

6"

38'-0"

1'-0"1'-0"4'-0"2'-0"22'-0"2'-0"4'-0"1'-0"1'-0"

VERTICAL, E.F.

#6 BARS @ 8" O.C.

HORIZONTAL, E.F.

#7 BARS @ 7" O.C.

3'-0"

3'-0" @ 8" O.C.

#6 DOWELS

@ 8" O.C.

#6 DOWELS

@ 8" O.C.

#6 DOWELS

12" O.C. T & B

#6 BARS @

8" O.C. T & B

#7 BARS @

17'-0"

6"

HORIZ., E.F.

#7 BARS @ 7" O.C.

VERT., E.F.

#6 BARS @ 8" O.C.

VERT., E.F.

#6 BARS @ 8" O.C.

HORIZ., E.F.

#7 BARS @ 7" O.C.

VERT., E.F.

#6 BARS @ 8" O.C.

HORIZ., E.F.

#7 BARS @ 7" O.C.

8" O.C. E.W.

#5 BARS @

VERT., E.F.

#6 BARS @ 8" O.C.

HORIZ., E.F.

#6 BARS @ 8" O.C.

VERT., E.F.

#6 BARS @ 8" O.C.

HORIZ., E.F.

#6 BARS @ 8" O.C.

8" O.C. T & B

#7 BARS @

@ 8" O.C.

#6 DOWELS@ 8" O.C.

#6 DOWELS

VERT., E.F.

#6 BARS @ 8" O.C.

HORIZ., E.F.

#7 BARS @ 7" O.C.

FIN. GRADE EL. 696.00


EL. 683.50

EL. 682.00

EL. 698.83

EL. 693.50

EL. 696.15

EL. 698.83


1'-6"

1'-6"

EL. 683.50

EL. 682.00

AS SHOWN, E.F.

ADDITIONAL # 5 BARS

2'-6"

12" O.C. T & B

#6 BARS @ 2'-6"

A10

S0-01

AS REQUIRED

INTO EXTERIOR WALLS

OPENING OR HOOK BARS

EXTEND 1'-6" BEYOND

5 - #6 BARS CONT, T & B

12" O.C.

#3 TIES @

44

(TYP.)

SHOWN FOR CLARITY

AT PIPE PENETRATION NOT

ADDITIONAL REINFORCEMENT

STONE (TYP.)

6" CRUSHED

STONE (TYP.)

6" CRUSHED

2 ADD. NO. 203/29/18

Sheet Title

Sequence

Sheet No.

Revisions

No. Date

Designed

Drawn

Project No.

Checked

of

Issue Date

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B

C

D

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CLO

STL/NDW

CLM/TTM

SE

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FEB., 2018

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EL. 686.90EL. 686.90

EL. 691.66

AND SECTION

STRUCTURAL PLAN

PARSHALL FLUME

S9-01

3/8" = 1'-0"PLANG1

3/8" = 1'-0"SECTIONA1

A1

--

A1

--

EL. 691.26

STONE (TYP.)

6" CRUSHED

EL. 698.57

FIN. GRADE EL. 695.00± FIN. GRADE EL. 695.00±

1'-0"1'-0"5'-0"1'-0"19'-0"1'-0"5'-0"1'-0"1'-0"

1'-3"

1'-0"

1'-0"

1'-3"

1'-0"

35'-0"

1'-0"5'-0"21'-0"5'-0"1'-0"

33'-0"

1'-0"

6'-0"

1'-0"

8'-0"

(TYP.)

GROUT

3'-0"

3'-0"

8" O.C. E.W./E.F.

#6 BARS @

A10

S0-01

(TYP.)

BARS @ 8" O.C., E.F.

#5 VERTICAL DOWEL

(TYP.)

CORNER REINFORCING

1'-0"

2'-6"

O.C. HORIZ. E.F.

#6 BARS @ 8"

O.C. VERT. E.F.

#5 BARS @ 8"

O.C. TOP E.W.

#5 BARS @ 8"

O.C. BOTTOM E.W.

#6 BARS @ 8"

O.C. BOTTOM E.W.

#6 BARS @ 8"

O.C. TOP E.W.

#5 BARS @ 8"

O.C. HORIZ. E.F.

#6 BARS @ 8"

O.C. VERT. E.F.

#5 BARS @ 8"

WITH CRUSHED STONE

FILL ENTIRE VOID AREA

46 3/8" = 1'-0"SECTIONA11

3/8" = 1'-0"SECTIONG11

EL. 698.57

EL. 698.57

O.C. E.W., E.F.

#6 BARS @ 8"

(TYP.)


#6 VERTICAL DOWEL

EL. 691.26

GROUT FILL

O.C. E.W., T.B.

#6 BARS @ 8"

STONE (TYP.)

6" CRUSHED

1'-0" 1'-0"6'-0"1'-0"1'-0"

1'-0"

2'-6"

EL. 691.26

EL. 686.90

O.C. BOTTOM E.W.

#6 BARS @ 8"

O.C. TOP E.W.

#5 BARS @ 8" (TYP.)


#6 VERTICAL DOWEL

O.C. E.W., E.F.

#6 BARS @ 8"

OF 2'-6" (TYP.)

UPER SLAB MIN.

WALL BAR INTO

EXTEND HORIZ

1'-3"

2'-6"

1'-0"6'-0"1'-0"1'-0" 1'-0"

G11

--

G11

--

A11

--

A11

--

2 03/29/18 ADD. NO. 2

Sheet Title

Sequence

Sheet No.

Revisions

No. Date

Designed

Drawn

Project No.

Checked

of

Issue Date

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C10-0

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1

2

3

6

7

8

9

0

1

2

3

6

7

8

9

0

3/8" = 1'-0"SECTIONA1

3/8" = 1'-0"PLANF1

3/8" = 1'-0"SECTIONA11 C10-01

A11

--

A1

--

A1

--

A11

--

AND SECTIONS

MECHANICAL PLAN

UV BASIN MODIFICATION

UV BANK 2A UV BANK 2B

UV BANK 1A UV BANK 1B

EFFLUENT

AERATION BASIN

24" POST

F.F. EL. 688.50

CLEANING AREA

WALKWAY AND

COLUMN (TYP.)

CANOPY SUPPORT

OUTLINE

METAL CANOPY

(TYP.)

LEVEL CONTROL

AUTOMATIC

EFFLUENT

24" PLANT

SLAB

CONCRETE

25'-6"

(TYP.)

HANDRAIL

ALUMINUM

2'-0"34'-0"4'-0"

40'-0"

T.O.W. EL. 693.54

CENTER (TYP.)

DISTRIBUTION

UV POWER

SYSTEMS CENTER

UV HYDRAULICCONTROL CENTER

UV SYSTEM

4'-0"

13'-6"

8'-0"

SLAB

CONCRETE

OF DIRECTION

BE A MAXIMUM 8'-0" AND ALL CHANGE

SPACING ON PIPE SUPPORT SHALL

ST. STL. CUSHIONED PIPE CLAMPS.

MOUNT ON ST. STL. UNISTRUT USING

(2 HOSES TO EACH PDC FROM HSC)

1/2" HYDRAULIC HOSE

UV BANK 1A UV BANK 1BEL. 688.50

EFFLUENT

24" PLANT

INV. EL 682.98±

EFFLUENT

AERATION BASIN

24" POST

INV. EL. 687.11±

EL. 684.98±

(TYP.)

LEVEL CONTROL

AUTOMATIC

3'-0"1'-0"24'-0"1'-0"3'-0"

EX. T.O.W. EL. 692.50±

SLAB

CONCRETE

1'-0"4'-0"

1'-0" 2'-0"

(TYP.)

HANDRAIL

ALUMINUM

MATERIAL (TYP.)

1/2" EXPANSION

EL. 687.69±

WEIR SETPOINT

EL. 693.54

CENTER (TYP.)

DISTRIBUTION

UV POWER

(TYP.)

NOT SHOWN FOR CLARITY

ELECTRICAL CONNECTIONS

CENTER (TYP.)

DISTRIBUTION

UV POWERCOLUMN (TYP.)

CANOPY SUPPORT

EL. 688.50±

SYSTEMS CENTER

UV HYDRAULIC

SLAB

CONCRETE

(TYP.)

HANDRAIL

ALUMINUM

8'-0"

UV BANK 2AUV BANK 1A

EL. 693.54

MATERIAL (TYP.)

1/2" EXPANSION

4'-0"

10 1/2 " 1'-0" 10 1/2 " 1'-0"10 1/2 " 10 1/2 "

2'-9" 2'-9"6'-0"

1'-0"5'-0"1'-0"1'-0" 1'-0"

EL. 686.86

D7

DT-03

D7

DT-03

D7

DT-03

MIN. 688.20

MAX. 688.51

NOTE: CANOPY SUPPORT COLUMNS NOT SHOWN FOR CLARITY.

EL. 692.50±

EX. T.O.W.

RESPONSIBILITY OF THE CONTRACTOR

CANOPY BY CONTRACTOR SHALL BE THE

FIX ANY DAMAGE TO EXISTING METAL

MATERIAL AND LABOR REQUIRED TO

ANCHORED TO NEW CONCRETE SLAB.

EXISTING METAL CANOPY SHALL BE

PDC FROM HSC)

(2 HOSES TO EACH

1/2" HYDRAULIC HOSE

PDC FROM HSC)

(2 HOSES TO EACH

1/2" HYDRAULIC HOSE

PDC FROM HSC)

(2 HOSES TO EACH

1/2" HYDRAULIC HOSE

WIDTH (TYP.)

REDUCE CHANNEL

ST. STL. BAFFLES TO

WIDTH (TYP.)

REDUCE CHANNEL

ST. STL. BAFFLES TO

(TYP. FOR 2)

W/ MANUAL ACTUATOR

ST. STL. WEIR GATE

47

EFFLUENT SAMPLER

RELOCATE EXISTING

AS A SPARE.

AS SHOWN AND PROVIDE ONE NEW EFFLUENT SAMPLER TO OWNER

NOTE: CONTRACTOR SHALL RELOCATE EXISTING EFFLUENT SAMPLER

(TYP. FOR 2)

W/ MANUAL ACTUATOR

ST. STL. WEIR GATE

2'-9" WIDE BY 3'-0" HIGH

2 03/29/2018 ADD. NO. 2


PAGE 4 THIS IS THE LAST PAGE Attachments to Addendum No. 2 preceding this page: Sheet C3-02A, Overall Site Grading Plan (Alternate), C4-02, Headworks Modification Mechanical Sections, C6-01, Final Clarifiers No. 1 and No. 2 Modification Plan and Section, S8-02, Post Aeration Structural Sections, S9-02, Parshall Flume Structural Plan and Sections, and C10-01, UV Basin Modification Mechanical Plan and Sections. A total of 10 pages or sheets of drawings (including this page) have been included in Addendum No. 2. General Contractors are requested to respond to this email as a verification of receipt . This will NOT be mailed. A copy of this Addendum may be picked up at the Krebs Engineering office.