HomeMy WebLinkAbout8th Change Order 03/18/2026 Monroef I� BOARD OF COUNTY COMMISSIONERS
County of „ P
Mayor Michelle Lincoln,District 2
The Florid e Mayor Pro Tem David Rice,District 4
Craig Cates,District 1
James K.Scholl,District 3
Holly Merrill Raschein,District 5
Memorandum
DATE: 03/12/2026
TO: BOCC
Digitally signed by Kevin
G.e 1 Date: 03.12
FROM: Kevin G. Wilson, P.E., Assistant County Administrator 13:56:49-04'00'
Christine Digitally signed by
Christine Hurley
THRU: Christine Hurley, County Administrator Hurley Date:2026.03.12
Y 19:00:19-04'00'
SUBJECT: Proposed Change Order to be Approved
Attached is proposed Change Order#8 for the Twin Lakes Flood Mitigation. This change order
increases the final contract sum by$40,138.46. Funding will be provided by FKAA.
Monroe County Ordinance 027-1998 and subsequent amendments provide authority for the
Administrator to approve change orders within specified limits after providing Board of County
Commissioners with at least 24 hours to review them and pose any questions or objections that they
may have.
It is the Administrator's intent to approve the attached change order under that authority after the 24-
hour BOCC notification time.
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
MONROE COUNTY/ENGINEERING/PROTECT MANAGEMENT
CONTRACT CHANGE ORDER
PROJECT TITLE: Twin Lakes Flood Mitigation Project CHANGE ORDER NO: 8
INITIATION DATE: 2/24/26
TO CONTRACTOR: Ferreira Construction Co. Inc. CONTRACT DATE: 6/16/24
The Contract is revised as follows:
Total original combined Monroe County and FKAA contract $21,734,258.71
Previously authorized Change Order 1 MC items increase to contract $171,600.00
Previously authorized Change Order 2 FKAA deduction to contract $1,359,605.00
Previously authorized Change Order 3 Monroe County increase to contract $59,818.12
Previously authorized Change Order 4 clerical error correction from CO3 No change
Previously authorized Change Order 5 Monroe County increase to contract $33,222.88
Previously authorized Change Order 6 Monroe County increase to contract $33,931.38
Previously authorized Change Order 7 Monroe County increase to contract $49,517.00
Revised Contract Sum through Change Order 7 $20,722,743.09
This Change Order 8 FKAA revisions result in increase to contract. $40,138.46
Revised Total Contract amount (includes Monroe County and FKAA$1,506,833.46 $20,762,881.06
Pursuant to contract article 7.2.2, the cost or credit to the owner resulting from a change in the Work shall be determined
in one or more of the following methods:
7.2.2.1. Mutual acceptance of lump sum properly itemized and supported by sufficient substantiating data to permit
evaluation.
7.2.2.2. Bid unit prices stated in the Contract Documents or subsequently agreed upon.
7.2.2.3. Cost to be determined in a manner agreed upon by the parties and a mutually acceptable fixed or percentage
fee.
This Change Order 8 includes the following:
1. All labor, equipment, materials, and incidental costs associated with FKAA's design revisions, listed below
that entail the modification of the connection detail at the transition between stainless steel pipe and PVC.
The current approved plans indicate coupled transitions. However, based on field coordination and review
of the Contractor's approved submittal, a flanged transition with a restrained spool piece is recommended
in lieu of the coupled configuration to maintain constructability and consistency across the remaining
watermain offset conflict locations, stations 17+59, 21+46, 26+00, 26+60, 28+85, and 31+50. The offset
is comprised of 2 EA at each location.
2. FKAA revised sheet no. D-3, dated 12/15/2025 and prepared by Justin C. Dacey, P.E., is incorporated
into and made part of the Contract.
3. FKAA new sheet no. D-6, dated 12/15/2025 and prepared by Justin C. Dacey, P.E., is incorporated into
and made part of the Contract.
4. Technical Specifications, Florida Keys Aqueduct Authority, Twin Lakes Distribution System Upgrade,
FKAA Project#2375-22 revised pages Section 22_11_13_1 to 22_11_13_6 and revised pages Section
40_05_23.01_1 to 40_05_23.01_9 are incorporated into and made part of the Contract.
5. FKAA Contract bid prior to this Change Order was $1,466,695.00 and this Change Order increases the
FKAA contract amount to $1,506,833.46.
This Change Order No. 8 is a net increase of $40,138.46 and represents 0.185 % increase (less than 1%) to the original
contract price.
Contractor agrees to accept the increase in monetary compensation and hereby waives and releases any and all claims for
any additional compensation related to these bid items.
The FKAA (if applicable), Engineer of Record - FOR (WSP USA, Inc) and the Construction Engineering and Inspection
Services- CEI (HDR Construction Control Corp.) concur with this change order.
The $40,138.46 Change Order No. 8 amount will be reimbursed to Monroe County by Florida Keys Aqueduct Authority in
accordance with the interlocal agreement between Monroe County and FKAA dated 1/18/2023.
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
Not valid krrt 1d�pllpzable), and Contractor
®R1TT®R ...
luµsigned
__���.....
ENGINEERING�ERt�'"'E Date
" It S.Clarke,P.E.Date boaddbyJudIz9Soaooe,��
DIRECTOR
Christine Digitally signed by Christine Date
Hurley
Hurley rl e
COUNTY ADMINISTRATORDate.2026.03.18 08:30:02Date
Approval by Docusigned by:
FKAA not applicable Ev9DF2FD748245453�lk h&w6 U- 3/9/2026
... .. .. ..... .w.................. -...............y,,,,,,,,,, ... ....... ..,.,e.. ..,..�..�..
David Hac art m !rector On it-. Date
%XP,yNROE COUNTY AeT70RNEY
�Ytl.�t c. {tM�.tCTh���ir..r:PU7.4kJ+
SIR.ASSPSI*ANT COUNTY Y ATTORNEY
DATE:....212 Mfi.
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
Change Order Attachment per Ordinance No. 004-1999
• Change Order was not included in the original contract specifications. Yes ® No ❑
If yes, explanation:
On December 15, 2025, FKAA issued a field change bulletin proposing a design revision to the Twin Lakes
Distribution System, which modified the connection detail at the transition between stainless steel pipe and PVC.
The current approved plans indicate coupled transitions. However, based on field coordination and review of the
Contractor's approved submittal, a flanged transition with a restrained spool piece is recommended in lieu of the
coupled configuration to maintain constructability and consistency across the remaining watermain offset conflict
locations, stations 17+59, 21+46, 26+00, 26+60, 28+85, and 31+50. The offset is comprised of 2 EA at each
location. The changes also include adding a specification for field welding, insulating gasket kit requirements, and
field-applied petrolatum wax tape coating requirements for flanged assemblies.
"Create New FKAA Bid item No. 29A, Revision 1 - 8-inch Stainless Steel Flanged Connection: 12 EA quantity at
$3,344.87/EA= $40,138.46
• Change Order was included in the original specifications. Yes ❑ No
If yes, explanation of increase in price: N/A
• Change Order exceeds $25,000 or 5% of contract price (whichever is greater). Yes ❑ No
If yes, explanation as to why it is not subject for a calling for bids:
This Change Order is a net increase of 40,138.46 and represents 0.185 % increase (less than 1%) to the original contract
price.
• Project engineer/architect approves the change order. Yes ® No ❑
If No, explanation of why: N/A
• Change Order is correcting an error or omission in design document. Yes ❑No
• Should a claim under the applicable professional liability policy be made? Yes ❑ No
Explain: N/A
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
FERREIRA
Extra Work Cost Breakdown
Owner's Project No: FDEM B0200-FDEP 22SRP57 Ferreira Job No.:4473
Project Name: Twin Lakes(Key Largo)Flood Mitigation Prepared By:Andres P.
RCO No. RCO#12 Proposal Date:2/13/2026
Description: Replacement of WM Off-set Couplings per FKAA request with
import weld neck.(2 weeks of lead time)
LABOR
Description Net Hourly Hours
No. Name(T&M Only) Class. WC Code Burden% Rate STD. OT. Amount Total
1 lWelder I Welder 1 1 82.64% 1 $56.90 1 48.00 1 0.00 1 $4,988.261 $4,988.26
2 1 1 1 1 82.64% 1 1 0.00 1 0.00 1 $0.001 $0.00
11 Subtotal-Bare Labor: 1 $4,988.261 $4,988.26
MATERIALS
INo.1 Description Quantity Unit Price UOM Amount
1 Flanged restrained Coupling 12.00 $3,953.93 EA $47,447.20
2 Credit for SS Step Flex Compression Coupling 12.00 -$1,293.03 EA -$15,516.36
3 1 $0.00
Subtotal Materials: $31,930.84
Sales Tax%:
Subtotal Materials: $31,930.84
EQUIPMENTi
Description Rates(Blue Book) Hours
Rental per' Amount
NoF"'-
Make/Model No/176) Cost/Hr. Oper. Standby
H
Welding truck $27.25 48.00 0.00 $1,308.00
0.00 0.00 $0.00
Subtotal Equipment: $1,308.00
SUBC-ONTRACT
INo.1 Description Quantity UOM Unit Price Amount
1 $0.00
Subtotal Subcontract: $0.00
CONTRACT UNIT ITEMS'
INo.1 Item Description Rate Quantity UOM Amount
1 $0.00
Total Contract Items: $0.00
INDIRECT COSTS, EXPENSES,AND PROFIT
(1)Mark-up(10%)on the payments in Labor,Materials,Equipment,Subcontractor,and contract items:
a) Total Labor $4,988.26
b) Total Materials $31,930.84
c) Total Equipment $1,308.00
Subtotal Mark-Ups: $1,911.36
(it) Subcontractor marlaip $0.00
(iii) Contract Items marlaip $0.00
Total Mark-Up Amount: $1,911.36
Extra Work Breakdown Summary:
LABOR+BURDEN $4,988.26
MATERIALS $31,930.84
EQUIPMENT $1,308.00
SUBCONTRACT $0.00
CONTRACT ITEMS $0.00
MARK UP $12911.36
TOTAL AMOUNT 1 $40,138.46
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
" FERG�USOM 10810 S.W.84TH STORKS#1216 eolm: To: Harry Sosnoff
WATERWORKS MIAMI,FL 33157-6737 harry.sosnoff@ferguson.com
omments:
Phone:786-573-7140
Fax:305-969-0361
11:58:36 JAN 14 2026 Page 1 of 2
FEL-POMPANO BEACH, FL WW#125
Price Quotation
Phone: 786-573-7140
Fax: 305-969-0361
Bid No: B610040 Cust Phone: 305-805-6900
Bid Date: 12/17/25 Terms: NET 10TH PROX
Quoted By: HS
Customer: FERREIRA CONSTRUCTION CO IN Ship To: FERREIRA CONSTRUCTION CO IN
9455 NW 104 ST 9455 NW 104 ST
TWIN LAKES TWIN LAKES
MEDLEY, FL 33178 MEDLEY, FL 33178
Cust PO#: ANDRES Job Name: TWIN LAKES
Item Description Quantity Net Price UM Total
UTLITY CONFLICT TRANSITION
ONLY SBR RUBBER AVAILABLE
ON ALPHA COUPLINGS
APPROXIMATE TWO WEEKS
LEAD TIME
SP-R26609101212 8 ALPHA REST COUP 8.60-9.10 316SS 12 1127.560 EA 1 5785,.84......... 13,530 72
SP-R268091012 8 ALPHA FLG REST COUP 8.60-9.10 316 12 812.330 EA I 1..3.7.162....... 9,�74�7 96
DR18BPEX 8 C900 DR18 PVC EPDM GJ BLUE PIPE 40 30.210 FT 1208.40
PROVIDING PRICING AND LEAD
TIMES FOR BOTH AIS AND
IMPORT WELD NECK FLANGE
APPROXIMATE 10-11 WEEKS
LEAD TIME
SP-FAB SPECIAL FABRICATION .1.4....................................2.g.1.8,.2.60.......................E.A...................................................40856..50....
8. 3.1.6SS...6/80... .L.D...N.E.G.p4...FLANGE
....
150#AIS
10-11 WEEKS TO SHIP
APPROXIMATE ONE WEEK LEAD
TIME
SP-FAB SPECIAL FABRICATION 12 1235.420 EA 17206T88 14,825 04
8"316SS S/80 WELD NECK FLANGE
150#IMPORT
1 WEEK TO SHIP
INSULATING KIT
APPROXIMATE 2-3 WEEKS LEAD
TIME
HOW ARE WE DOING? WE WANT YOUR FEEDBACK!
Scan the QR code or use the link below to
02-0
complete a survey about your bids:
https://survey.medallia.com/?bidsorder&fc=1216&on=74281
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
O FERGUSONv Page 2 of 2
FEL-POMPANO BEACH, FL WW#125
WATERWORKS Price Quotation
Fax: 305-969-0361
11:58:36 JAN 14 2026
Reference No: B610040
Item Description Quantity Net Price um Total
SP-AET4PG1 DWG1 MY088" 150#TYPE E TRO DUP G-10 GSKT KI 12 156.530 EA 1 9.1..A2...... 1,378 36
PART#ET4PG1 DWG1 MY08150
8" 150#TYPE E TROJAN DUPLEX G-10
GASKET KIT EPDM SEAL
HARDWARE FOR ISO KIT
APPROXIMATE ONE WEEK LEAD
TIME
SP-PSHHCSNFNAIS 3/4X3-1/2AIS 316SS H/HEADSCREW&NUT 95 142, 32.080 EA ..............35.92,96............ 3,079 68
POLYETHYLENE ENCASEMENT
A70320VB3 20X440 VB3 WHITE POLYWRAP 3-8 DIP 1 427.900 RL 427.90
PSPWT210 2X100 10 MIL PIPE WRAP TAPE 2 8.140 EA 16.28
ANDRES 305-506-7028
Net Total: $92746,.80 $44,714 34
Tax: ...........$156.1 4,.0.1....... $2.r"32 35
Freight: $0.00
Total: $98061.,.61 $47 447 20
Quoted prices are based upon receipt of the total quantity for immediate shipment(48 hours). SHIPMENTS BEYOND 48 HOURS SHALL BE
AT THE PRICE IN EFFECT AT TIME OF SHIPMENT UNLESS NOTED OTHERWISE.QUOTES FOR PRODUCTS SHIPPED FOR RESALE
ARE NOT FIRM UNLESS NOTED OTHERWISE.
Due to the uncertain impact of potential tariffs, Ferguson's quotation/proposal has not included any provision or contingency for future tariffs or increase of
existing tariffs. Ferguson reserves the right to adjust prices to reflect the impact of any new or increased tariffs that affect our costs at the time of shipment.
Ferguson will provide notice of any such adjustments along with documentation supporting the changes.
CONTRACTOR CUSTOMERS: IF YOU HAVE DBE/MBE/WBE//VBE/SDVBE/SBE GOOD FAITH EFFORTS DIVERSITY GOALS/REQUIREMENTS ON A
FEDERAL,STATE, LOCAL GOVERNMENT, PRIVATE SECTOR PROJECT, PLEASE CONTACT YOUR BRANCH SALES REPRESENATIVE
IMMEDIATELY PRIOR TO RECEIVING A QUOTE/ORDER.
Seller not responsible for delays, lack of product or increase of pricing due to causes beyond our control,and/or based upon
Local,State and Federal laws governing type of products that can be sold or put into commerce. This Quote is offered contingent upon the
Buyer's acceptance of Seller's terms and conditions,which are incorporated by reference and found either following this document,or
on the web at https://www.ferguson.com/content/website-info/terms-of-sale
Govt Buyers: All items are open market unless noted otherwise.
LEAD LAW WARNING: It is illegal to install products that are not"lead free"in accordance with US Federal or other applicable law in potable water
systems anticipated for human consumption. Products with'NP in the description are NOT lead free and can only be installed in non-potable
applications. Buyer is solely responsible for product selection.
AN
HOW ARE WE DOING? WE WANT YOUR FEEDBACK!
Scan the QR code or use the link below to
complete a survey about your bids:
bpi https://survey.medallia.com/?bidsorder&fc=1216&on=74281
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
Romano, David
From: Justin Dacey <jdacey@fkaa.com>
Sent: Monday, December 15, 2025 2:03 PM
To: Romano, David
Cc: Sabbag,Anthony A.; Keith McMahon; Marnie Walterson; David Hackworth; Montiel-
Leonel; Carlson,James
Subject: FKAA - Request for change bulletin for stainless pipe conflicts - Twin Lakes (Key Largo)
Flood Mitigation Project, Monroe County, (Grant Nos. FDEM B0200 and FDEP 22SRP57)
Attachments: Twin Lakes_WM Upgrade_2375-22 _B3097_D3_2025-12-11.pdf,Twin Lakes_WM
Upgrade_2375-22 _B3097_D6_2025-12-11.pdf,40_05_23.01 Stainless Steel Pipe and
Tubing 2025-12-11.pdf, 33_05_31.16 Polyvinyl Chloride Pressure Pipe 2025-12-11.pdf
All [EXTERNAL]This email originated from outside of the organization Do not click links or open
attachments unless you recognize the sender and know the content is safe
Hi David,
In accordance with the terms of the Construction Contract, FKAA respectfully requests the issuance of a Bulletin
describing a proposed design revision so that the Contractor may prepare a formal Change Proposal for
evaluation.
These changes are described in the following enclosed documents:
• Revised FKAA Sheet D3: Modify material transition from coupled connection to flanged connection.
• New FKAA Sheet D6:Add new stainless-steel—to—PVC flanged transition detail, including restrained spool
configuration.
• Revised FKAA Section 33_05_31.16:Add requirements for restrained flange coupling adapters.
• Revised FKAA Section 40 05 23.01:
o Provide specification for field welding.
o Add insulating gasket kit requirements.
o Add field-applied petrolatum wax tape coating requirements for flanged assemblies.
The intent of this revision is to modify the connection detail at the transition between stainless steel pipe and PVC.
The approved plans currently indicate coupled transitions; however, based on field coordination and review of the
Contractor's approved submittal, a flanged transition with a restrained spool piece is recommended in lieu of the
coupled configuration to maintain constructability and consistency across the remaining conflict locations.
Please advise if any additional technical information or supporting sketches are required to support preparation of
the Bulletin.
Thanks,
Justin C. Dacey, P.E.
Assistant Engineer
Florida Keys Aqueduct Authority
1100 Kennedy Drive
Key West, Florida 33040
Dlii s 111 ll ui it
000usign Envelope ID:A260A285E6A7-85F4-827o'o91oo604Foo6
The |nfonnat|on contained |n dh|s oznnnnun|cat|on fronn the sender|s confident|aL It |s ntended so|e|yfor use by the nec|p|ent and
others authorized to necelive it. If you ane not the nec|p|ent, you ape heneby i that any d|sc|osune, ozpy|ng, d|stMbut|on or,
talking action |n relation of the contents ofth|s |nfonnat|on |s strictly ppoh|b|ted and nnay be un|avfuL
This enna|| has been scanned forx|ruses and nna|wape, and nnay have been autonnat|caUyarch|wed by Vi|nnecast, a |eader |n enna||
security and cyber nes|||ence. Vi|nnecast |ntegratesenna|| defensesw|th brand protection, security amanenesstra|n|ng, websecurty,
connp||anceand otheressent|a| capab|||t|es. Vi|nnecast helps protect |argeand snnaU organ|zat|o iris fronn nna||c|ousact|x|ty, hunnan
erporand techno|ogyfa||une; and to |ead the nnowennenttovard bu||d|ng a nnone nes|||entmmr|d. To flnd out nnone, x|sit ourwebsite.
2
p ILI
D
CL
_J ?roFpp 0U` FZ uZ) ZF J W JUs) =�Q4y/O�.o•l�u.�_•�N Y.=,, LL�p'(��?��..��:. IJ>_Q— W
y
z(� pp >p WwOa F wz ama ZFW 0 p W¢ Z O _J'2 .mv FO ~ HW
O0~ JU = ° �¢ Fz x0Ww WZ O— LL aui
N a=Z)U0 w ( U :Z= U
ILL LL- NCO o Zy` zU
w p < -F— �' u
aJYDm�ui W 0 W F a
W UJW O LLU)F(�� >
O >'f
ca
i S�' �.••O
LLILL
ILL w
W
Lo
v z r LL > W'
N O O
CL Z
CL
J J
�0> iMLu
xw Q o—�
D�
WQ
Qd 00 1 111 W 2 w D
EL ZFg X I m W Q > C)
� uCo LU O> i"l �� P Z0XW U a �
za _ UOw 0- �0 Q
xW I,
wwaw Q LL
p� ILLz NF W-2 m W�
W c
¢ O O F 2 x¢a W p J p LL LL
F U(7 F J SOW JO wwoow W cy Z U)
cn �� zzooa� Z UQp u¢Fiv UQvaIDQ Q W W
z
0.7 w Jga'J�W ?Fo z? zLLzo� (/� Y
� 'naXUW) 0- Qa(7 O
Qoo ? ��O ��0 o = Y Y
z� ago z Q z
x
F p Q
En
C)
LO UFO LL
>U 3�
Z �zF
p
(OZ U)Zpin wN jU�
ai 0 xiL wz LL
a Lu nW o z pp >
vW ¢ L)a
a QZpX zFWw
�U)Oww UJ
IO W aO W z 0aJ n
U � ) ¢ 0X�
OQ 0U)0 W W~ 0LL �U�w0 co w _ uiui
Q z N
Jx�U' U W F0U) FU > w o
LLOLU
z m 3:W>O W Fp0 d z $
ILL
Q
LLB
ILL /J rl` Q .r ILL _m
/ U III r LL - ui
(C) ~
Q
rF
r� W > Ln W w
>
N ¢ r`r GV Z
p a
Q
W =a �mw� IIIw
U 0 0 p a " "'��I J g W p LL J
'ITZ ZFgX I':: Co J III in Q
�ILL P w0 �a>�
W¢ = Z LL I `) LU
p�F cn � zLL aW JOJOw X Q 2 x
I
I Z LL- W IL I I in F WO ,hi
Q AD. ¢ `) �a
W I c) _
OJ00W LL 00w
a J-
�"
Ln z �(DF �a LL Wow WW z
Q ¢00 ��� ¢= u`niz>cF)�o �a� as
Lu
O F w U)U U W pzU W J W 0 JU) U)p OF�cD > a
N z > z Z(D W z0>Lu F U U' J ¢x to z>0 p W z
a a W 5
Q �; ro¢¢U�LL,
z z7U Zz Z W pZ>W
LL J U ro H 7
Q W U)OXco OLL W co¢Q0)
CL U) wd W >j p> J LL�J F LLI
F J w
O Z �U)OF J W F U)pW CO
> FOp O Xa0
J z U)F O
Lj z� a_a
U
O
0
4
C)
7�
D
w
o
Hsi ui a-
-w
z
z
z 4u:Io 0
-1'
Zi Lu WLu: w
2 , o:Z=
z L)
u)0 w oN z -c-
L)u) k. 0
C.
IFO S�'
LD
IL >-
Lu
0 0
z 0
0
D 0
u) Lu
z z a: Lu
Z)
Lu L) <
(D Lu L) Q >
Lu
0 L) C)LL
o< u)
F-- z 0 of
uz) wLL
[--LU W
Z z W
U)
w
-i U)
Lu 0 C)
LU oo m LU(D w C:) W
z F-- y c-- Y
z P: 6) T-
Q Ln o co
Lu
W cn L)
Lu L) z
LU z
Lu
0 Lu z < u)
j?
z
2 Do
(D Lu
0
z
0 z LU
Lu CD Lu 0 N C) LL
D->Lu P:- cn'L
zz way cL[-- z 9
0 N
z w 0
if cL 0 z 0
I--:) Lu af< o-
La 0 L) 0 L)Lu LU u)
LU U LU Om u) F-- Lu
u) o- Z z
z
LLI cl)m Lu
LLI < Lu I-
cL 2 >
u) :D LU cn 0 0
0 u) 0�
U)
L)
0 L) L) I-
Lu z F-- z LXL'
u) LLI 00 -
LL, -J z �F'cl
z
fr Lu z 0 Lu Lu<
0 LLI
LL u)>- < >Llu
Lu L) z L)
0 >-LU 00
Lu 0� �I-
(D >- �-< Lu w Lu<
-I =L) fr=
z 0
u)o-
u) 0'
F--LU ------
0
CY) L) 0 >
>w .0
o-0 z u) -t
Lu
7 o 0 Lu
u) 2 z �of
in
o? ir Lu D 0
'IT �-z m P:
LPL cp w Lu<
LO 0 Z 'n L)
o? L):�� <
Lu 0
<
L.0
x Lu U) 7
LY Lu oo z
LO U)<
X < L) 0 m:
LU U) U5
0 LL,'-n >
Hz (D Lu Lo LU
< Lu LU Z=E
>Lu LLI
ol
Lu:z Lu 0
Lu(D L);t LLI
CL cl- a 61
0 z z z
(1) < 0 z
>
c LLI D w cL cL
LLI 1-L)fr u) Lo
0
E::'
W,
0
0
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
SECTION 22_11_13
FACILITY WATER DISTRIBUTION PIPING
PART1 GENERAL
1.01 SUMMARY
A. This section includes materials, installation, and testing of polyvinyl chloride pipe
(PVC) conforming to AWWA C900.
1.02 REFERENCES
A. Section 40_05_00.01 — Common Work Results for General Piping.
B. American Association of State Highway and Transportation Official (AASHTO).
1. AASHTO T-180-82 The Moisture-Density Relation of Soils Using a 10-lb. (4.54
kg) Rammer and an 18-inch (457 mm) Drop.
C. ANSI B 16.1.
D. AWWA C104 (ANSI A21.4) Cement-Mortar Lining for Ductile-Iron and Gray Iron
Pipe and Fittings for Water.
E. AWWA C105 Polyethylene Encasement for Ductile-Iron Pipe Systems.
F. AWWA C110 Gray-Iron and Ductile-Iron Fittings, 3-inch through 48-inch for Water
and Other Liquids.
G. AWWA C111 (ANSI A21.11) Rubber Gasket Joints for Ductile-Iron and Gray-Iron
Pressure Pipe and Fittings.
H. AWWA C150 (ANSI A21.50) Thickness Design of Ductile-Iron Pipe.
I. AWWA C151 (ANSI A21.51) Ductile-Iron Pipe, Centrifugally Cast in Metal Molds or
Sand Lined Molds for Water or Other Liquids.
J. AWWA C219 Bolted Sleeve-Type Couplings for Plain-End Pipe.
K. AWWA C600 Installation of Ductile Iron Water Mains and Appurtenances.
L. AWWA C605 Installation of PVC Pressure Pipe & Fittings.
M. AWWA C601 Standard for Disinfecting Water Mains.
N. AWWA C900 Polyvinyl Chloride Pressure Pipe 4" through 12"
O. AWWA C901 Polyethylene Pressure Pipe and Tubing for Water Service.
P. ASTM D 1784, ASTM F 1674, ASTM A 536, ASTM F645, ASTM 01557.
Project#2375-22 22_11_13-1 FACILITY WATER DISTRIBUTION
PIPING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
Q. UNI-B-13-94.
1.03 GENERAL
A. The Contractor shall perform all excavation, backfilling, and related work required
for the construction of these mains, in accordance with the provisions set forth
under the applicable items of this Specification and of the General Conditions of the
Contract.
B. Where not otherwise set forth, all work shall be in accordance with AWWA (ANSI)
C600.
1.04 SUBMITTALS
A. Submit shop drawings in accordance with Section 01_33_00 — Submittal
Procedures.
B. Provide affidavit of compliance with AWWA C900.
C. Submit fully dimensioned cross-section of the bell and barrel of the pipe. Show the
bell maximum outside diameter in the pressurized area and its minimum wall
thickness at the same location.
D. Submit copies of the following manufacturer-required tests conducted on project
pipe:
1. Quick-burst strength of pipe and couplings.
2. Flattening resistance of pipe.
3. Record of additional tests after test sample failure.
E. Submit manufacturer's literature of gray iron and ductile-iron fittings including
dimensions, thickness, weight, coating, lining, and a statement of inspection and
compliance with the acceptance tests of AWWA C110 or C153. Submit copy of
report of pressure tests for qualifying the designs of all sizes and types of AWWA
C153 fittings that are being used in the project. The pressure test shall demonstrate
that the minimum safety factor described in AWWA C153, Section 53-15 is met.
F. Submit outline drawings and materials description of service connection saddles,
corporation stops, and pipe plugs.
G. Submit test results for the restrained joint system to be used certified by an
independent test laboratory demonstrating compliance with these specifications for
each size and pressure rating.
H. Submit restrained joint system installation instructions. Include bolt torque
limitations and assembly tolerances.
Project#2375-22 22_11_13-2 FACILITY WATER DISTRIBUTION
PIPING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
PART PRODUCTS
2.01 PIPE
A. AWWA C900, rubber-ring gasket bell end or plain end with elastomeric gasket
coupling, Class 150, cast iron equivalent outside diameter, material cell
classification 12454-B per ASTM D 1784.
2.02 FITTINGS
A. Fittings shall conform to AWWA C110 with a minimum pressure rating of 250 psi.
Size bells specifically for outside diameter of cast-iron equivalent PVC pipe
including rubber-ring retaining groove.
B. Mechanical joint fittings conforming to AWWA C153 may be used in lieu of AWWA
C110 fittings.
2.03 LINING AND COATING FOR FITTINGS
A. Line and coat fittings with fusion-bonded epoxy.
B. Coat buried fittings with bituminous coating.
C. Polyethylene wrap:
1. The encasement of ductile iron fittings shall consist of low-density polyethylene
wrap of at least 8-mil thickness conforming to AWWA C105. Color: Black
2.04 FLANGES AND FLANGE ADAPTERS
A. General Requirements:
1. Furnish flange coupling adapters for PVC piping systems where shown on the
drawings, sized to match the outside diameter of AWWA C900 piping.
2. Flange bolt-hole patterns shall conform to ASME B16.5, Class 150, and shall
be compatible with mating equipment, valves, and specials.
B. Restrained Flange Coupling Adapters
1. Flange coupling adapters shall be restrained-type and comply with AWWA
C219.
2. Provide Romac RFCA-PVC flange coupling adapters or an approved equal.
3. Flange coupling adapters shall be furnished with a factory shop coat for
corrosion protection during storage and handling.
4. The contractor shall apply a petrolatum tape wrap (Denso or equivalent) and
molded mastic over flanges and bolt assemblies for buried applications.
C. Gaskets:
1. Gaskets shall be EPDM rubber and:
a. Full-face type for all flange connections unless otherwise noted.
b. Sized to match flange dimensions and suitable for service conditions.
D. Hardware for flanges:
1. Bolts, nuts, and washers for all flange connections shall be Type 304 stainless
steel.
Project#2375-22 22_11_13-3 FACILITY WATER DISTRIBUTION
PIPING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
2. All nuts and bolts shall be assembled with an anti-seize or thread lubricant
approved for potable water service.
E. Corrosion protection:
1. For buried flange connections, apply a petrolatum-based tape wrap system
(e.g., Denso Wrap) with primer and molded mastic, covering:
a. The flange face and flange exterior surfaces,
b. All bolt heads, nuts, and exposed metal.
2. Extend wrap a minimum of 6 inches beyond the flange adapter to ensure
complete encapsulation
2.05 RESTRAINED JOINTS
A. Provide restrained joints where indicated in the drawings. Restrained joints shall be
provided by restraining systems that incorporate a series of machined serrations on
the inside diameter of a restraint ring to provide positive restraint. Restraining
systems shall meet or exceed the requirements of UNI-B-13-94 and ASTM F 1674
and the following:
B. Restraint devices for bell-and-spigot joints shall consist of a split restraint ring
installed on the spigot, connected to a solid backup ring seated behind the bell.
C. Restraint devices for connection to ductile-iron mechanical joints shall consist of a
split restraint ring installed behind the ductile-iron fitting follower gland and gasket
and shall retain the full deflection capability of the joint. All bell restraints and fitting
restraints must include 316 SS nuts and bolts.
D. The split restraint ring shall be machined to match the outside diameter of the pipe,
provide full 360- degree support around the barrel of the pipe, and shall incorporate
a series of machined serrations for gripping the outside surface of the pipe. The
serrations shall be uniform and extend the full circumference of the clamp. The ring
shall also incorporate a positive means of avoiding applying excessive clamping
force to the pipe.
E. Materials used in the restraint device shall be ductile iron conforming to ASTM A
536, Grade 60-42-12 or 65-45-12.
F. T-bolts, studs, and connecting hardware shall be 316 Stainless Steel.
G. Design restraining devices to have a 2:1 safety factor based on the design strength
of the pipe.
H. Restraining devices shall be EBAA Iron Series 1600. All bell restraints and fitting
restraints must include 316 SS nuts and bolts.
PART 3 EXECUTION
3.01 PRODUCT MARKING
A. Legibly mark pipe at 5-foot intervals and each coupling to identify the nominal
diameter, the outside diameter base, that is, cast-iron or steel pipe (IPS), the
material code for pipe and couplings, the dimension ratio number, AWWA C900,
Project#2375-22 22_11_13-4 FACILITY WATER DISTRIBUTION
PIPING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
and the seal of the testing agency that verified the suitability of the material for
potable water service (NSF in the United States).
3.02 DELIVERY AND TEMPORARY STORAGE OF PIPE
A. Ship, store, and place pipe at the installation site, supporting the pipe uniformly.
Avoid scratching the pipe surface. Do not stack higher than 4 feet or with weight on
bells. Cover to protect from sunlight.
B. Do not install pipe that is gouged or scratched forming a clear depression.
3.03 PIPE LAYOUT FOR CURVED ALIGNMENT
A. Pipe lengths may be bent for curved alignment but to no smaller radius curve than
the following:
3.04 HANDLING PIPE
A. Hoist pipe with mechanical equipment using a cloth belt sling or a continuous fiber
rope that avoids scratching the pipe. Do not use a chain. Pipes up to 12 inches in
diameter may be lowered by rolling on two ropes controlled by snubbing. Pipes up
to 6 inches in diameter may be lifted by hand.
3.05 INSTALLING BURIED PIPING
A. Install in accordance with AWWA C605, and as follows.
B. When installing pipe in trenches, do not deviate more than 1 inch from line or 1/4
inch from grade. Measure for grade at the pipe invert.
C. Compact trench backfill to the specified relative compaction. Do not float pipe. Do
not use high impact hammer-type equipment except where the pipe manufacturer
warrants in writing that such use will not damage the pipe.
3.06 ASSEMBLY OF PIPE JOINT
A. The spigot and bell or bell coupling shall be dirt free and slide together without
displacing the rubber ring. Lay the pipe section with the bell coupling facing the
direction of laying.
B. Insert the rubber ring into the groove in the bell in the trench just before joining the
pipes. First clean the groove. Observe the correct direction of the shaped ring. Feel
that the ring is completely seated.
C. Lubricate the spigot over the taper and up to the full insertion mark with the lubricant
supplied by the pipe manufacturer. If the lubricated pipe end touches dirt, clean the
pipe end and reapply lubricant.
D. Insert the spigot into the bell and force it slowly into position.
E. Check that the rubber ring has not left the groove during assembly by passing a
feeler gauge around the completed joint.
Project#2375-22 22_11_13-5 FACILITY WATER DISTRIBUTION
PIPING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
3.07 WRAPPING FITTINGS AND RESTRAINED JOINT DEVICES
A. Apply wrapping per AWWA C 105 as modified herein.
B. Install the polyethylene to completely encase the pipe and fittings to provide a
watertight corrosion barrier.
1. Continuously secure overlaps and ends of sheet and tube with polyethylene
tape.
2. Make circumferential seams with two complete wraps, with no exposed edges.
3. Tape longitudinal seams and longitudinal overlaps, extending tape beyond and
beneath circumferential seams.
C. Wrap bell-spigot interfaces, restrained joint components, flanges, and other irregular
surfaces with wax tape and moldable mastic as required.
D. Prior to placing polyethylene encasement, complete the installation of all wax tape
and moldable mastic.
E. Minimize voids beneath polyethylene.
1. Place circumferential or spiral wraps of polyethylene tape at 2-foot intervals
along the barrel of the pipe to minimize the space between the pipe and the
polyethylene.
F. Overlap adjoining polyethylene tube coatings a minimum of 1 foot and wrap prior to
placing concrete anchors, collars, supports, or thrust blocks.
1. Hand wrap the polyethylene sheet, apply two complete wraps with no exposed
edges to provide a watertight corrosion barrier, and secure in place with 2-
inch-wide plastic adhesive tape.
G. Contractor shall size the Polyethylene Sheet Encasement (wrap) to slide over the
fittings and then wrap tight the ends. This may require up to 12 to 16-inch wrap for
8-inch fitting.
H. Wrap buried cast-iron fittings and restrained joint devices in two (2) layers of
polyethylene wrap in accordance with AMA C105.
I. Polyethylene encasement for ductile-iron fittings shall be supplied as a flat tube
meeting the dimensions of Table 1 in AWWA C 105 and shall be supplied by the
ductile-iron pipe manufacturer.
J. Place sand backfill within 1 foot of the pipe, valves, and fittings wrapped with
polyethylene encasement.
3.08 FIELD HYDROSTATIC TESTING
A. Test pressures are shown in the Piping Schedule in the Specifications. Test in
accordance with Section 40_05_00.09— Piping Systems Testing.
END OF SECTION
Project#2375-22 22_11_13-6 FACILITY WATER DISTRIBUTION
PIPING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
SECTION 40_05_23.01
STAINLESS STEEL PIPE AND TUBING
PART1 GENERAL
1.01 SUMMARY
A. Section includes: Stainless steel piping and tubing.
1.02 REFERENCES
A. American Society of Mechanical Engineers (ASME):
1. B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and
250.
2. B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through 24.
3. B16.11 - Forged Fittings, Socket-Welded and Threaded.
4. B31.3 - Process Piping.
5. B36.19 - Stainless Steel Pipe.
B. American Welding Society (AWS):
1. D1.6 - Structural Welding Code - Stainless Steel.
C. American Water Works Association (AWWA):
1. C208- Dimensions for Fabricated Steel Water Pipe Fittings.
2. C209-Tape Coatings for Steel Water Pipe and Fittings.
3. C220 -Stainless-Steel Pipe, % in. and Larger.
4. C226 -Stainless-Steel Pipe Fittings for Waterworks Service.
5. C228-Stainless-Steel Pipe Flange Joints for Water Service.
D. ASTM International (ASTM):
1. A182 - Standard Specification for Forged or Rolled Alloy and Stainless Steel
Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature
Service.
2. A193 - Standard Specification for Alloy-Steel and Stainless Steel Bolting for
High Temperature or High Pressure Service and Other Special Purpose
Applications.
3. A194 - Standard Specification for Carbon and Alloy Steel Nuts and Bolts for
High Pressure or High Temperature Service, or Both.
4. A240 - Standard Specification for Chromium and Chromium-Nickel Stainless
Steel Plate, Sheet, and Strip for Pressure Vessels and for General
Applications.
5. A269 - Standard Specification for Seamless and Welded Austenitic Stainless
Steel Tubing for General Service.
6. A276 - Standard Specification for Stainless Steel Bars and Shapes.
7. A312 - Standard Specification for Seamless, Welded, and Heavily Cold
Worked Austenitic Stainless Steel Pipes.
8. A351 - Standard Specification for Castings, Austenitic, for Pressure-Containing
Parts.
9. A380 - Standard Practice for Cleaning, Descaling, and Passivation of Stainless
Steel Parts, Equipment, and Systems.
Project#2375-22 40_05_23.01-1 STAINLESS STEEL PIPE AND
TUBING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
10. A403 - Standard Specification for Wrought Austenitic Stainless Steel Piping
Fittings.
11. A743 - Standard Specification for Castings, Iron-Chromium, Iron- Chromium-
Nickel, Corrosion Resistant, for General Application.
12. A744 - Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion
Resistant, for Severe Service.
13. A774 - Standard Specification for As-Welded Wrought Austenitic Stainless
Steel Fittings for General Corrosive Services at Low and Moderate
Temperatures.
14. A778 - Standard Specification for Welded, Unannealed Austenitic Stainless
Steel Tubular Products.
15. A789 - Standard Specification for Seamless and Welded Ferritic/Austenitic
Stainless Steel Tubing for General Service.
16. A790 - Standard Specification for Seamless and Welded Ferritic/Austenitic
Stainless Steel Pipe.
17. A928 - Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel
Pipe Electric Fusion Welded with Addition of Filler Metal.
18. A967 - Standard Specification for Chemical Passivation Treatments for
Stainless Steel Parts.
19. B622 - Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy
Pipe and Tube.
20. B912 - Standard Specification for Passivation of Stainless Steels Using
Electropolishing.
21. F593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and
Studs.
E. NSF International (NSF):
1. Standard 61 - Drinking Water System Components - Health Effects.
1.03 DESIGN REQUIREMENTS
A. Piping layout: Lay out and fabricate piping systems with piping sections as long as
possible, while still allowing shipment, so that joints are minimized.
1. Piping design not indicate the location of every joint and flexible coupling that
may be needed to connect piping sections fabricated in the shop.
2. Add joints and flexible couplings in a manner that achieves intent of
maximizing size of individual piping sections.
B. Shop fabrication: Fabricate piping sections in the shop and pickle and passivate at
point of manufacture.
C. Field assembly:
1. Field welding of stainless-steel pipe and fittings is acceptable where specified
in the Drawings.
2. Field welding shall comply with the requirements of Part 3.05 of this Section.
1.04 SUBMITTALS
A. Submit as specified in Section 01_33_00 - Submittal Procedures.
B. Product data: As specified in Section 40_05_00.01 - Common Work Results for
General Piping.
Project#2375-22 40_05_23.01-2 STAINLESS STEEL PIPE AND
TUBING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
C. Shop drawings:
1. Detailed layout drawings:
a. Dimensions and alignment of pipes.
b. Location of valves, fittings, and appurtenances.
c. Location of field joints.
d. Location of pipe hangars and supports.
e. Connections to equipment and structures.
f. Location and details of shop welds.
2. Thickness and dimensions of fittings and gaskets.
3. Photographs, drawings, and descriptions of pipe, fittings, welding procedures,
and pickling and passivating procedures.
4. Material specifications for pipe, gaskets, fittings, and couplings.
5. Data on joint types and components used in the system including stub ends,
backing flanges, flanged joints, grooved joint couplings and screwed joints.
PART PRODUCTS
2.01 STAINLESS STEEL PIPE
A. General:
1. Pipe sizes specified in the Specifications and indicated on the Drawings are
nominal.
B. Wall thickness:
1. As specified in Section 40_05_00.01 - Common Work Results for General
Piping.
C. Fittings for piping 3-inch nominal diameter and greater:
1. Material: In accordance with ASTM A240 stainless steel, grade to match the
pipe.
2. Manufacturing standard: In accordance with ASTM A774.
3. Wall thickness of fitting: In accordance with ASME B36.19 for the schedule of
pipe specified.
4. End configuration: As needed to comply with specified type of joint.
5. Dimensional standards:
a. Fittings with weld ends: In accordance with ASME B16.11.
b. Fittings with flanged ends: In accordance with ASME B16.5, Class 150.
D. Fittings for piping less than 3 inches in diameter:
1. Material: In accordance with ASTM A240 stainless steel, grade to match the
pipe.
2. Manufacturing standard: In accordance with ASTM A403, Class WP.
3. Wall thickness and dimensions of fitting: In accordance with ASME B16.11 and
as required for the schedule of pipe specified.
4. End configuration: As needed to comply with specified type of joint.
5. Forgings in accordance with ASTM A182, or barstock in accordance with
ASTM A276. Match forging or barstock material to the piping materials.
E. Piping joints:
1. Joint types, piping greater than 2 inches in diameter, general:
Project#2375-22 40_05_23.01-3 STAINLESS STEEL PIPE AND
TUBING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
a. Where type of joint is specifically indicated on the Drawings or specified,
design and shop-fabricate piping sections utilizing type of joint illustrated
or scheduled.
b. Joints at valves and pipe appurtenances:
1) Provide flanged valves and flanged pipe appurtenances in stainless
steel piping systems with flanged ends.
2) Design and fabricate piping sections to make connections with
flanged valves and pipe appurtenances using flanged coupling
adapters or flanged joints.
a) Flexible couplings and flanged coupling adapters: Provide
stainless steel construction with materials matching the piping
system and conforming to requirements.
3) Buried piping: Welded or mechanically restrained.
2. Welded joints:
a. Pipe 12 inches and larger in diameter: Automatically weld joints using gas
tungsten-arc procedures.
b. Piping 4 inches through 12 inches in diameter: Single butt-welded joints.
c. Piping less than 4 inches in diameter: Single butt-welded joints.
d. Mark each weld with a symbol that identifies the welder.
3. Flanged joints: Conforming to the requirements in accordance with ASME
B16.5, Class 150, 300, or 600, as scheduled.
4. Flanges for Schedule 40S and Schedule 80S pipe:
a. Provide forged stainless steel (type matching piping system) welding neck
flanges or slip-on flanges in accordance with ASME B16.5 Class 150, 300
or 600, as scheduled.
b. Material: In accordance with ASTM A182.
F. Gaskets:
1. Ethylene Propylene Diene Monomer (EPDM) rubber for drinking water
applications; NSF Standard 61 compliant material only.
2. Where specified, provide dielectric isolating gasket kits which contain:
a. Retainer material: G-10 glass reinforced epoxy (GRE).
b. Sealing material: EPDM.
c. Sleeve material: G10 GRE.
d. Washer isolating material: G10 GRE.
G. Bolts for flanges:
1. Bolts and nuts: Type 304 stainless steel in accordance with ASTM A193 heavy
hex head.
a. Bolt length such that after installation, end of bolt projects 1/8-inch to 3/8-
inch beyond outer face of nut.
b. Nuts: In accordance with ASTM A194 heavy hex pattern.
H. Fabrication of pipe sections:
1. Welding: Weld in accordance with ASME B31.3.
2. Weld seams:
a. Full penetration welds, free of oxidation, crevices, pits and cracks, and
without undercuts.
b. Provide weld crowns of 1/16 inch with tolerance of plus 1/16 inch and
minus 1/32 inch.
c. Where internal weld seams are not accessible, use gas tungsten-arc
procedures with internal gas purge.
Project#2375-22 40_05_23.01-4 STAINLESS STEEL PIPE AND
TUBING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
d. Where internal weld seams are accessible, weld seams inside and
outside using manual shielded metal-arc procedures.
I. Expansion joints:
1. Expansion joints shall be installed in the location indicated on the drawings
and shall be manufactured of ductile iron conforming to the material
requirements of ASTM A536 and ANI/AWWA C153/A21.53. Foundry
certification of material shall be readily available upon request.
2. Each expansion joint shall be pressure tested prior to shipment against its own
restraint to a maximum of 350 PSI for 4-inch to 12-inch. A minimum 2:1 safety
factor, determined from the design pressure rating, shall apply.
3. Each expansion joint shall have an 8-inch minimum expansion. The expansion
fitting shall not expand or exert an axial imparting thrust under internal water
pressure. The expansion fitting shall not increase or decrease the internal
water volume as the unit expands or contracts.
4. All internal surfaces (wetted parts) shall be lined with a minimum of 15 mils of
fusion-bonded epoxy conforming to the applicable requirements of
ANSI/AWWA C213. Sealing gaskets shall be constructed of EPDM. The
coating shall meet ANSI/NSF-61.
5. Exterior surfaces shall be coated with a minimum of 6 mils of fusion bonded
epoxy conforming to the applicable requirements of ANSI/AWWA
C116/A21.16.
J. Cleaning (pickling) and passivation:
1. Following shop fabrication of pipe sections, straight spools, fittings, and other
piping components, clean (pickle) and passivate fabricated pieces.
2. Clean (pickle) and passivate in accordance with ASTM A380 or A967.
a. If degreasing is required before cleaning to remove scale or iron oxide,
cleaning (pickling) treatments with citric acid are permissible.
1) However, these treatments must be followed by inorganic cleaners
such as nitric acid/hydrofluoric acid.
b. Passivation treatments with citric acid are not allowed.
3. Finish requirements: Remove free iron, heat tint oxides, weld scale, and other
impurities, and obtain a passive finished surface.
2.02 COATING — STAINLESS STEEL PIPE, FITTINGS AND SPECIALS
A. No exterior coating is required except for:
1. Heat affected zones from field welding.
2. Buried flanges.
B. General:
1. Provide corrosion protection for all buried stainless-steel flanged joints, bolts,
nuts, and all heat affected zones of field welds using a petrolatum tape wrap
system as specified herein.
2. Petrolatum Tape Wrap System:
a. Primer: Petrolatum paste.
b. Tape: Petrolatum-impregnated corrosion protection tape.
c. Acceptable products:
1) Denso Paste + Denso LT Tape, Denso Petrolatum tape.
3. Profiling mastic:
a. Acceptable products:
Project#2375-22 40_05_23.01-5 STAINLESS STEEL PIPE AND
TUBING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
1) Denso Profiling Mastic.
2.03 SOURCE QUALITY CONTROL
A. Visually inspect pipe for welding defects such as crevices, pits, cracks, protrusions,
and oxidation deposits.
B. Provide written certification that the pipe as supplied are in accordance with ASTM
A778. Supplemental testing is not required.
C. Provide written certification that the fittings as supplied are in accordance with
ASTM A774.
1. Supplementary testing is not required.
D. Thoroughly clean any equipment before use in cleaning or fabrication of stainless
steel.
E. Storage: Segregate location of stainless steel piping from fabrication of any other
piping materials.
F. Shipment to site:
1. Protect all flanges and pipe ends by encapsulating in dense foam.
2. Securely strap all elements to pallets with nylon straps. Use of metallic straps
is prohibited.
3. Cap ends of tube, piping, pipe spools, fittings, and valves with non-metallic
plugs.
4. Load pallets so no tube, piping, pipe spools, fittings, or valves bear the weight
of pallets above.
5. Notify Engineer when deliveries arrive so Engineer may inspect the shipping
conditions.
6. The Engineer may reject material due to improper shipping methods or
damage during shipment.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install piping in such a manner as not to impart strain to connected equipment.
B. Slope horizontal lines so that they can be drained completely.
C. Provide valve drains and eccentric reducers at low points in piping systems as
specified.
D. Provide access for inspection and flushing of piping systems to remove sediment,
deposits, and debris.
3.02 FIELD ASSEMBLY OF SHOP-FABRICATED PIPING SECTIONS
A. Join shop-fabricated piping sections together using backing flanges, flexible
couplings, flanged coupling adapters, grooved couplings, or flanges.
Project#2375-22 40_05_23.01-6 STAINLESS STEEL PIPE AND
TUBING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
3.03 FIELD QUALITY CONTROL
A. Test piping to pressure and by method as specified in Section 40_05_00.01 -
Common Work Results for General Piping.
1. If pressure testing is accomplished with water:
a. Use only potable quality water.
b. Piping: Thoroughly drained and dried or place immediately into service.
B. Visually inspect pipe for welding defects such as crevices, pits, cracks, protrusions,
and oxidation deposits.
3.04 PROTECTION
A. Preserve appearance and finish of stainless steel piping by providing suitable
protection during handling and installation and until final acceptance of the Work.
1. Use handling methods and equipment to prevent damage to the coating,
include the use of wide canvas slings and wide padded skids.
2. Do not use bare cables, chains, hooks, metal bars, or narrow skids.
3. Store stainless steel piping and fittings away from any other piping or metals.
Storage in contact with ground or outside without projection from bad weather
is prohibited.
4. Protect stainless steel piping and fittings from carbon steel projections (when
grinding carbon steel assemblies in proximity) and carbon steel contamination
(do not contact stainless steel with carbon steel wire brush or other carbon
steel tool).
3.05 FIELD WELDING
A. Perform all field welding in accordance with AWS D1.6 and ASME Section IX.
B. Field welding shall be performed only by welders certified for the applicable
processes, materials, and positions.
C. Protect adjacent materials and equipment from heat, sparks, and spatter; prevent
contamination of stainless steel surfaces by carbon steel tools, grinding dust, or
debris.
D. Verify joint fit-up, alignment, bevel geometry, and root opening prior to welding. Do
not weld over dirt, moisture, oil, or damaged surfaces.
E. Joint Preparation:
1. Bevel pipe ends to the angles, typically 37.5 degrees, with a uniform land and
root opening suitable for achieving full penetration.
2. Clean all weld surfaces to bright metal using non-ferrous tools. Remove
oxides, coatings, cutting oils, and any foreign matter.
3. Ensure pipe alignment does not exceed tolerances of ASME B31.1/B31.3 as
applicable.
4. Support piping to prevent movement, sagging, or distortion during welding.
F. Purge Requirements:
1. Back purging with high-purity argon gas is required for all root passes.
2. Install temporary purge dams, purge bladders, or other approved purge
devices to maintain purge gas enclosure throughout the root pass.
Project#2375-22 40_05_23.01-7 STAINLESS STEEL PIPE AND
TUBING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
3. Reduce oxygen concentration on the weld backside to :5 50 ppm prior to
initiating the root pass.
4. Maintain purge flow until at least one hot pass has been completed and the
root is fully protected against oxidation.
5. Protect purge equipment from moisture and displacement during welding.
G. Welding Procedures
1. Perform root passes using the gas tungsten arc welding (GTAW/TIG) process
unless otherwise approved.
2. Ensure full-penetration fusion through the entire pipe wall thickness.
3. Perform hot pass and fill passes using GTAW or GMAW.
4. Maintain interpass temperature within the limits specified in the WPS; do not
exceed 350'F unless otherwise approved.
5. Provide wind shielding or temporary welding enclosures when welding
outdoors to prevent disruption of gas shielding.
6. Grind intermediate passes as necessary to remove slag inclusions, porosity, or
irregularities.
7. Form the final cap pass with a uniform, slightly convex contour, free of
undercut, overlap, or excessive reinforcement.
H. Environmental Controls:
1. Do not weld in rain, standing water, or high-moisture environments unless
suitable protection is provided.
2. Shield weld zone from wind using screens, tents, enclosures, or other
approved means.
3. Maintain a dry, clean surface free from condensation before and during
welding.
4. Provide adequate ventilation for welding operations performed in confined
spaces.
I. Post-Weld Treatment:
1. Remove weld discoloration, heat tint, and oxides using mechanical cleaning
and pickling paste suitable for stainless steel.
2. Perform passivation using citric or nitric solutions according to ASTM
A380/A967.
3. Thoroughly rinse and neutralize treated areas after cleaning and passivation.
4. Do not use carbon steel brushes, grinding wheels, or tools at any point.
J. Examination and Testing:
1. Perform visual inspection of all welds in accordance with AWS D1.6.
2. Repair defects in accordance with applicable codes.
3. Re-inspect repaired areas at no additional cost to the Owner.
K. Cleaning and Restoration:
1. Remove welding tents, purge equipment, debris, temporary supports, and all
foreign materials from the work site upon completion.
2. Restore piping coatings, insulation, jacketing, or protective coverings disturbed
during welding operations.
3. Protect completed welds from contamination, mechanical damage, or
exposure to carbon steel debris.
Project#2375-22 40_05_23.01-8 STAINLESS STEEL PIPE AND
TUBING
Docusign Envelope ID:A260A285-E6A7-85F4-827D-D91 DB604FDD6
3.06 CORROSION PROTECTION TAPE WRAP INSTALLATION
A. Apply corrosion-protection primer, profiling mastic (as required), and tape wrap to
the following areas:
1. All exposed portions of flanges, including bolt heads, nuts, washers, and
flange rims.
2. All field-welded joints, extending a minimum of 6 inches beyond each weld
heat-affected zone.
B. Wrap Installation:
1. Apply petrolatum primer paste to all surfaces to be wrapped, in accordance
with the manufacturer's instructions.
2. Apply profiling mastic as required to fill voids, transitions, and irregular
geometries and to create a uniform profile suitable for proper tape adhesion.
3. Wrap with petrolatum tape using a minimum 55 percent overlap, or greater
where recommended by the manufacturer.
4. Extend the tape wrap a minimum of 6 inches beyond the weld heat-affected
zone, and fully encapsulate all bolts, nuts, washers, and flange perimeters.
C. Bedding and Backfill:
1. Provide uniform bedding beneath flanges and welded areas; do not leave
voids or point loads beneath hubs or fittings.
2. Protect wrapped assemblies from sharp objects and prevent displacement of
the wrap during placement of bedding and backfill.
3. Place backfill only after the Engineer has verified that the wrap installation is
complete, continuous, and free of visible defects.
END OF SECTION
Project#2375-22 40_05_23.01-9 STAINLESS STEEL PIPE AND
TUBING