Attachment D.7 Drawings 7 of 10 (6 Pages).pdf

KEY NOTES: GENERAL NOTES:

K L

DASHED LINES REPRESENT STEEL MEZZANINE -

SOME PIPING SHOWN IS EITHER ABOVE OR BELOW.

1ISOLATE EXISTING PRESSURE REDUCING STATION SERVING THIS

MECHANICAL ROOM AND OTHER AREAS IN NORTHEAST QUADRANT OF

BUILDING. REMOVE PIPING UP TO EXISTING TAKE-OFF TEE AND

INSTALL TRIPLE OFFSET BUTTERFLY VALVE WITH BLIND FLANGE CAP

TO SEAL FOR POTENTIAL FUTURE CONNECTION (SEE NEW PLANS FOR

LOCATION OF THIS ADDED VALVE). COORDINATE OUTAGE DURING

PREMIUM HOURS WITHIN MILD WEATHER SEASON TO MINIMIZE

DISRUPTION TO FACILITY. REPLACE ANY REMOVED OR DAMAGED

PIPING INSULATION ON COMPLETION.

REMOVE EXISTING 30 PSI STEAM PIPING TO WATER HEATERS

SCHEDULED FOR DEMOLITION. INCLUDE REMOVAL OF ALL

ASSOCIATED END OF MAIN STEAM TRAPS AND PIPING COMPONENTS.

REMOVE ALL SUPPORT HANGERS AS REQUIRED AND RESECURE ANY

IMPACTED PIPING ANCHORS THAT MAY HAVE BEEN IMPACTED BY

DEMOLITION. PERFORM ON OVERTIME DURING MILD WEATHER.

REMOVE EXISTING INSTANTANEOUS WATER HEATER ALONG WITH ALL

PIPING COMPONENTS, CONTROL SENSORS, AND WIRING. REMOVE

ANY INTEGRATION INTO BUILDING AUTOMATION TO BE REPLACED BY

NEW WATER HEATER INSTALLATION.

REMOVE EXISTING 30 PSI TAKE-OFF VALVE TO FUTURE WATER

HEATER THAT WAS NEVER INSTALLED.

PATCH ALL PIPING PENETRATIONS THROUGH ELEVATED PLATFORM

SERVING AS MEZZANINE FLOOR. WELD STEEL PATCHES AND/OR

GRATING AS REQUIRED AND PAINT ALL AFFECTED AREA TO RESIST

ANY CORROSION ON COMPLETION.

NOTE NOT USED.

CONTRACTOR TO ISOLATE HIGH PRESSURE STEAM MAIN AT HEADER

TAKE-OFF VALVE. NOTE THAT THIS STEAM RISER WILL AFFECT ENTIRE

QUADRANT OF BUILDING AND SHOULD BE SCHEDULED A MINIMUM OF

1-MONTH IN ADVANCE WHILE ON PREMIUM OVERTIME DURING MILD

WEATHER TO AVOID RISK TO HOSPITAL OPERATIONS.

DURING OUTAGE TAP INTO HIGH PRESSURE MAIN AT APPROXIMATE

LOCATION INDICATED AND INSTALL ISOLATION VALVE DETAIL IN KEY

NOTE #12 BELOW. FIELD VERIFY ACTUAL CONDITIONS FOR OFFSET

FROM MAIN REQUIRED TO AVOID EXISTING PIPING SERVICES AND

SUPPORT HANGERS IN THIS CONGESTED AREA.

PROVIDE 4" TRIPLE OFFSET BUTTERFLY VALVE WITH FLANGED

CONNECTIONS AND SPOOL PIECES FOR BYPASS ASSEMBLY. INSTALL

A 1.5" BYPASS AROUND VALVE WITH PISTON VALVE FOR EQUALIZING

LINE PRESSURE PRIOR TO CLOSING HIGH PRESSURE SERVICE.

ROUTE 3/4" HIGH PRESSURE CONDENSATE FROM REDUCING STATION

INLET DRIP LEG TO DISCHARGE INTO EXISTING FLASH TANK.

REFER TO PRESSURE REDUCING STATION DETAIL 7/PP500 FOR ALL

COMPONENTS REQUIRED IN THIS PREMANUFACTURED SKID

ASSEMBLY (CONTRACTOR WILL NOT BE ALLOWED TO FIELD

FABRICATE ON SITE). NOTE THAT ACCESS WILL BE FROM THE PLAN

WEST SIDE (UNDERNEATH MEZZANINE PLATFORM). FIELD VERIFY ALL

DIMENSIONS WITH FACTORY PRIOR TO SHOP DRAWING SUBMITTAL.

ROUTE 3/4" LOW PRESSURE CONDENSATE FROM 15 PSI OUTLET DRIP

LEG TO DISCHARGE DIRECTLY INTO CONDENSATE PUMP.

ROUTE 3" CONDENSATE FROM NEW WATER HEATER ASSEMBLY

ALONG FLOOR (DO NOT LIFT SO THAT GRAVITY DRAINAGE CAN BE

APPLIED WHEN NEEDED). CONNECT DIRECTLY INTO EXISTING

CONDENSATE PUMP WHERE INDICATED.

PROVIDE HEAVY DUTY 18" TALL GUARD RAILS AROUND PERIMETER OF

WATER HEATERS, MANUFACTURED BY HANDLE-IT, INC. VERIFY

INSTALLATION DOES NOT BLOCK ANY SERVICE ACCESSIBILITY.

POSITION WATER HEATERS FAR ENOUGH FROM COLUMN TO ALLOW

FOR FULL REMOVAL OF HEATING TUBE BUNDLES.

A.

B.

C.

D.

E.

MECHANICAL CONTRACTOR SHALL REFER TO THE VA MASTER

SPECIFICATION MANUAL ALONG WITH ANY APPLICABLE STANDARDS

WITHIN THE 2019 HVAC DESIGN GUIDE. ALL REQUIREMENTS OF THOSE

MANUALS SHALL BE MAINTAINED IN ADDITION TO ALL NOTES AND

DESCRIPTIONS INDICATED WITHIN THESE DRAWINGS. ANY CONFLICTS

BETWEEN THOSE DOCUMENTS SHOULD BE BROUGHT TO THE

ATTENTION OF THE ENGINEER FOR INTERPRETATION.

MECHANICAL CONTRACTOR WILL BE RESPONSIBLE TO REVIEW ALL

POTENTIAL OUTAGES RESULTING FROM TIE-INS SHOWN ON THESE

DRAWINGS TO DETERMINE APPROXIMATE AMOUNT OF OVERTIME

REQUIRED TO PERFORM ALL MECHANICAL WORK INDICATED. PROVIDE

THE VA COTR A MINIMUM OF 14 DAYS ADVANCE NOTICE OF ANY

OUTAGE FOR COORDINATION OF SCHEDULES WITH AFFECTED

DEPARTMENTS.

COORDINATE ALL NEW PIPE ROUTING WITH ALL OTHER TRADES TO

INSURE ADEQUATE CLEARANCES FOR PLUMBING, ELECTRICAL

CONDUIT, STRUCTURAL SUPPORTS, PIPING, ETC. ANY UNAVOIDABLE

CONFLICTS SHALL BE BROUGHT TO THE ATTENTION OF THE

ARCHITECT/ENGINEER OF RECORD. PROVIDE ALL OFFSETS AND

TRANSITIONS AS REQUIRED FOR A CLEAN INSTALLATION.

SUPPORT ALL PIPING DIRECTLY TO STRUCTURE. DO NOT SUPPORT ANY

PIPE FROM DUCTWORK, CONDUIT, OR OTHER PIPING ENCOUNTERED.

WHERE MECHANICAL SYSTEMS TO REMAIN ARE DAMAGED, OR

DISTURBED, DURING THE COURSE OF CONSTRUCTION THE

CONTRACTOR WILL BE RESPONSIBLE TO REMOVE DAMAGED PORTIONS

AND INSTALL NEW PRODUCTS OF EQUAL QUALITY AND FUNCTIONALITY.

ALL EXISTING PIPING THROUGH NEW FIRE RATED WALLS SHALL BE

ADEQUATELY FIRE SEALED AS REQUIRED. PIPING PENETRATIONS

THROUGH INTERSTITIAL FLOOR SHALL BE DRILLED, OR CUT, BY THE

CONTRACTOR AND FIRE SEALED AS REQUIRED.

" H

P S

4" HPS

" 1

R

8" 15# STM

3/4" 15#R

3/4" HPR

H J K L M

10" HPS10" HPS

4" HWR 4" HWR

" H

W R

DASHED LINES REPRESENT STEEL MEZZANINE -

SOME PIPING SHOWN IS EITHER ABOVE OR BELOW.

Project Number

Building Number

Drawing Number

Project Title

Location

Issue DateCheckedDrawn

Drawing Title

Approved:

VA FORM 08 -6231

A

CONSTRUCTION

DOCUMENTS SUBMISSION

FULLY SPRINKLERED

Office of Construction and Facilities Management

U.S. Department of Veterans Affairs

B

C

D

E

F

A

B

C

D

E

F

2 145678910

Phase

ARCHITECT/ENGINEER OF RECORDSTAMP CONSULTANT

3 2 145678910

TRUE NORTH

PLAN NORTH

B

C :\R e v it P ro je c ts

\V A

B u ild in g

- P h a s e

- M e c h a n ic a l 2 ja s o n g o ttw a lt5

.rv t

/3 /2

:2

:0

A M

BASEMENT INTERSTITIAL - PHASE

4 - HYDRONIC PIPING PLAN

PREVENT LEGIONELLA,

PHASE III

MINNEAPOLIS

618-14-118

11/30/2022JGJG 618-14-118

1356-MP104.1

1/4" = 1'-0"

ENLARGED DEMOLITION MECHANICAL PLAN - PHASE 4.4

1/4" = 1'-0"

ENLARGED MECHANICAL PLAN - PHASE 4.4

41360 DATEREG. NO.

I HEREBY CERTIFY THAT THIS PLAN,

SPECIFICATION OR REPORT WAS PREPARED BY ME

OR UNDER MY DIRECT SUPERVISION AND THAT I

AM A DULY LICENSED PROFESSIONAL ENGINEER

UNDER THE LAWS OF THE STATE OF MINNESOTA.

JASON GOTTWALT, P.E.

11/30/2022

Revisions:Date:

KEY NOTES: GENERAL NOTES:

TS

TS

T S

TS

T S

T S

TS

T S

8" CW

E.B

E.A

E.C

8" CW

2 1/2" RHW

4" HW

8" CW

A.B

A.C

A.A

8" CW

TO BE

REPLACED

IN NEXT

PHASE

SWH

70-NE-02

REFER TO DRAWING PP100B FOR

INSTALLATION OF NEW RECIRC

WHILE SPLITTING EXISTING LOOP.

REFER TO DRAWING PP100B, KEY NOTE

#71, FOR INSTALLATION OF INCOMING

WATER MONITORING STATION.

PROVIDE NEW DUAL RPZ

ASSEMBLY, SEE KEY NOTE

C W

C W

REFER TO DETAIL

2/1356-PP104

FOR VALVE LOCATION.

REFER TO DETAIL

2/1356-PP104

FOR VALVE LOCATION.

1356-PP104.1

1356-PP105.1

33 NOTE APPLIES TO ALL NEW

PIPING AND COMPONENTS

DWBP

70-NE-02

HJ

NOTE THAT THESE KEY NOTES ARE SPECIFIC TO THIS DRAWING (DO

NOT REFER TO MASTER KEY NOTES ON SHEET 1356-PP003). NOT ALL

KEY NOTES ARE UTILIZED AND MAY HAVE GAPS OF MISSING NOTE

NUMBERS TO KEEP 'GROUPS OF TEN NOTES' AVAILABLE PER PHASE.

SHUT-OFF VALVE E.C AND VALVE A.B TO ISOLATE SECTION OF PIPING

INDICATED FOR REMOVAL. REFER TO GENERAL NOTES FOR

PROVISIONS TO BE TAKEN TO VERIFY ANY EXISTING VALVE LEAKAGE.

ONCE ISOLATED, REMOVE SECTION OF 8" GALVANIZED PIPING LOOP.

CUT INTO SECTIONS SMALL ENOUGH TO TRANSPORT TO LOADING

DOCK AREA FOR REMOVAL. INCLUDE DEMOLITION OF EXISTING

SUPPORTS MOUNTED TO PIPING RACKS, NEW PIPING WILL BE

SUPPORTED ONTO EXISTING RACK STRUCTURE BUT SHOULD BE

PROVIDED WITH NEW PIPE CLAMPS.

CONTRACTOR TO COORDINATE ISOLATION OF 6" SECONDARY WATER

SERVICE TO BUILDING WITH UTILITIES REP. SCHEDULE TIMEFRAME

THAT VA BUILDING 70 WILL BE ON MAIN SERVICE ONLY, WITHOUT THIS

BACK-UP SOURCE, SO THAT AN INTERIM LIFE SAFETY REQUEST CAN BE

MADE BY VA COTR. TEMPORARILY CAP AT POINT OF DISCONNECT

UNTIL ALL NEW PIPING INSTALLATION IS COMPLETE.

REMOVE EXISTING RPZ ASSEMBLY AND ALL OTHER PIPING

COMPONENTS UP TO THE WALL PENETRATION. ALL PIPING AND

COMPONENTS TO BE REPLACED WITH NEW STAINLESS STEEL PER

PHASE 4.3 DRAWING.

EXISTING BOOSTER PUMP TO BE DEMOLISHED AND REPLACED WITH

NEW SYSTEM. COORDINATE SECONDARY SERVICE OUTAGE WITH VA

COTR PER KEY NOTE #12 ABOVE.

REMOVE EXISTING VFD FOR ADJACENT CHILLED WATER PUMPS.

REFER TO ELECTRICAL DRAWINGS FOR DISCONNECT/RECONNECT IN

ORDER TO RELOCATE AS REQUIRED TO PROVIDE CLEARANCE FOR

NEW RPZ ASSEMBLY INSTALLATION SHOWN IN PHASE 4.3.

SHUT OFF ISOLATION VALVES FOR HOT/COLD WATER TO EXISTING

WATER HEATER (INSTALLED DURING PREVIOUS PHASE). COORDINATE

INTERIM LIFE SAFETY REQUEST TO VA FOR SCHEDULE OF TIME WHERE

THIS SECONDARY WATER HEATER SHALL BE OFFLINE.

REMOVE EXISTING CIRCULATION PUMP. INSTALL ISOLATION VALVE

SHOWN ON INLINE PUMP PIPING DETAIL TO ISOLATE REMAINDER OF

SYSTEM WHILE PUMP RECONFIGURATION/UPDATE OCCURS.

REMOVE EXISTING STEAM-TO-WATER HEAT EXCHANGER ASSEMBLY

AND COMPONENTS. REFER TO DRAWING PP500 FOR REMOVAL OF

ASSOCIATED STEAM PIPING AND CONTROLS.

NOT USED.

INSTALL NEW SECTION OF 8" SCHEDULE 10 STAINLESS STEEL PIPING TO

REPLACE PREVIOUSLY REMOVED. INSTALL IN EXACT SAME LOCATION

AS REMOVED SECTION OF PIPING. PROVIDE NEW SUPPORT CLAMPS

ON EXISTING PIPING RACK AS REQUIRED.

PROVIDE TEMPORARY END CAPS AT EITHER SIDE OF NEW PIPING

SECTION. FIRST PERFORM A PRESSURE TEST ON PIPING SECTION PER

SPECIFICATION REQUIREMENTS, AND THEN STERILIZE PIPING USING

CHLORINE SOLUTION FOR AT LEASE 24 HOURS PRIOR TO FLUSHING.

INCLUDE DRAIN/FILL VALVES ON EITHER END TO ACCOMPLISH.

INSULATE ENTIRE LENGTH OF PIPING PER SPECIFICATION

REQUIREMENTS. INCLUDE CONTINUOUS PVC COVERING THROUGHOUT

AND PREPARE ENDS FOR EXTENSION TO NEXT SUB-PHASE PIPING

WHICH WILL INCLUDE INSULATING ALL VALVE BODIES.

NOT USED THROUGH KEY NOTE

SHUT-OFF VALVE E.C AND VALVE A.B (BOTH FURTHER OUT TO NEXT

ADJACENT RISER VALVES OUTSIDE THE EXTENTS OF THIS PHASE

DRAWING) TO ISOLATE THIS WATER SERVICE FOR VALVE AND PIPING

REPLACEMENT. REFER TO GENERAL NOTES FOR PROVISIONS TO BE

TAKEN TO VERIFY ANY EXISTING VALVE LEAKAGE AND AREAS THAT

WILL BE AFFECTED BY THIS MAJOR WATER OUTAGE.

RELOCATE VFD'S FOR EXISTING CHILLED WATER PUMPS TO

APPROXIMATE LOCATION INDICATED. FABRICATE UNISTRUT STANDS

AS REQUIRED, REFER TO ELECTRICAL DRAWINGS FOR POWER.

ALL PIPING, AND COMPONENTS, REPLACED FROM THE SECONDARY

WATER SERVICE SHALL BE 304 STAINLESS STEEL OR BETTER WITH

EITHER ROLL GROOVED OR WELDED FITTINGS. ANY EXCEPTIONS TO

THIS WILL REQUIRE APPROVAL FRO VA COTR.

ONCE VALVE INSTALLATION IS COMPLETED, INSULATE ALL AFFECTED

PIPING AND NEW VALVE BODIES COMPLETELY. COVER EVERYTHING

WITH PVC JACKET COVERS AND SEAL AS REQUIRED. INSULATION CAN

OCCUR DURING NORMAL HOURS AFTER OUTAGE COMPLETION, BUT

SHOULD NOT BE DELAYED FOR ANY MORE THAN 3 BUSINESS DAYS.

INSTALL ½” COLD WATER PIPE TAKE-OFF AND VALVE FROM INCOMING

WATER SERVICE. EXTEND THIS PIPING TO SAMPLING STATION AND

SENSORS NOTED AS ‘MS’ ON DRAWINGS. CONNECT TO PLASTIC

TUBING INLET OF WATER SAMPLING STATION MOUNTED TO WALL OR

UNISTRUT STAND. NOTE THAT SAMPLING CHAMBER WILL REQUIRE

PLASTIC DISCHARGE PIPING ROUTED TO NEARBY FLOOR DRAIN

ALONG WITH LOW VOLTAGE CABLING FROM INTERNAL SENSORS

EXTENDED TO CONTROLLER INDICATED WITHIN KEY NOTE #??.

PROVIDE A MASTER MONITORING STATION TO BE ADDED TO WATER

SERVICE ENTERING THE BUILDING. THIS WILL CONTINUALLY MONITOR:

THE TEMPERATURE, pH LEVEL, PRESSURE, TOTAL DISSOLVED SOLIDS

(TDS), AND FREE CHLORINE LEVEL. INTEGRATE ALL MONITORED

POINTS INTO CAMPUS AUTOMATION SYSTEM FOR REMOTE

MONITORING/ALARM. LOCATE FLOW CELL SAMPLING STATION NEXT

TO MASTER MONITORING STATION AND EXTEND SENSOR CABLES TO

SENSOR PORT ON PIPE. THE OPTIONAL EXTENDED LENGTH CABLING

WILL BE REQUIRED. USING PVC TUBING, PIPE DRAIN FROM FLOW

CELL AND OPEN SIGHT INTO NEARBY FLOOR DRAIN. REFER TO KEY

NOTE #71 ON DRAWING PP003 FOR MODEL NUMBER AND

SPECIFICATION REFERENCE.

PROVIDE TWO(2) 6" RPZ ASSEMBLIES IN PARALLEL CONSTRUCTED OF

304 STAINLESS STEEL OR BETTER. MOUNT EACH OF THE ASSEMBLIES

AT APPROXIMATELY 60" AND 30" ABOVE FLOOR LEVEL. ANGLE VALVE

STEMS ON EITHER SIDE AS REQUIRED FOR ACCESSIBILITY. REFER TO

OUTLINE SPECIFICATION BELOW.

DUAL RPZ VALVE SPECIFICATION - Each of the two assemblies shall consist of a pressure differential relief valve located in a zone between two positive seating check valves. The main valve body shall be manufactured from 300 Series stainless steel for corrosion resistance. The check valves shall be of thermoplastic construction with stain less steel hinge pins, cam arm, and cam bearing. The check valve shall utilize a single torsion spring design to minimize pressure drop through the assembly. The check valves shall be modular and shall seal to the main valve body by the use of an O-ring. There shall be no brass or bronze parts used with in the check assembly or relief valve. The use of seat screws to retain the check valve seat is prohibited. All internal parts shall be accessible through a single cover on the valve assembly securely held in place by a two bolt grooved coupling. The differential relief valve shall be of stain less steel con struction and shall utilize a rolling diaphragm and no sliding seals. The relief valve shall be bottom mounted and supplied with a steel reinforced sensing hose. The assembly shall include two resilient seated shutoff valves & four ball type test cocks. The assembly shall be a Watts Series 994, or equal coupled with either stainless steel body OS&Y valves or stainless triple offset butterfly valves.

PHASE 4.1 (DEMO - REFER TO DETAIL 1 AND 10-19 SERIES KEY NOTES):

THE EXISTING GALVANIZED 8" COLD WATER PIPING MAIN TO BE REMOVED

BETWEEN INTERIOR VALVES OF RISERS INDICATED IN KEY NOTES. REFER

TO WORK SEQUENCE DESCRIBED IN 'ISOLATION OF MAIN PIPING LOOP

SECTIONS' BELOW TO EITHER CONFIRM EXISTING VALVES DO NOT LEAK, OR

FOLLOW GUIDELINE PROVISIONS TO BE TAKEN IF THEY ARE FOUND

DEFECTIVE. NO OUTAGES WILL BE REQUIRED DURING THIS SUB-PHASE

WITH MAIN LOOP CONTINUALLY SERVING BOTH SIDES.

PHASE 4.2 (BUILD-BACK - REFER TO DETAIL 2 AND 20-29 SERIES KEY NOTES):

INSTALL NEW PIPING IN SAME LOCATION AS REMOVED SECTION OF 8" COLD

WATER MAIN. MAY REUTILIZE EXISTING PIPING RACK FOR PIPING

SUPPORTS. REFER TO KEY NOTES FOR ADDITIONAL INFORMATION RELATED

TO INSTALLATION.

PHASE 4.3 (WATER SERVICE REPLACEMENT - 30+ SERIES KEY NOTES):

AREA SHOWN IN EXPANDED 1/4" = 1'-0" PLAN VIEW ON DETAIL 3/PP104.1

SHALL BE UPGRADED WITH NEW DUAL RPZ BACKFLOW PREVENTION FROM

EXISTING 6" SERVICE INTO BUILDING. IN ADDITION THE EXISTING BOOSTER

PUMP ASSEMBLY SHALL BE FULLY REPLACED AS INDICATED ALONG WITH

ALL PIPING AND COMPONENTS TO NOW BE STAINLESS STEEL WITH EITHER

GROOVED OR WELDED FITTINGS. NOTE THIS WORK MAY OCCUR

SIMULTANEOUSLY WITH PHASE 4.2 EFFORT SHOWN.

PHASE 4.4 (WATER HEATER INSTALLATION / FINAL CONNECTIONS):

REFER TO DRAWING PP104.2 FOR DESCRIPTION OF THIS PROJECT PHASE.

ISOLATION OF MAIN PIPING LOOP SECTIONS:

PERFORM THE FOLLOWING PROCEDURE STEPS TO PROPERLY ISOLATE

EACH SECTION OF PIPING LOOP AS DESCRIBED IN PHASING SEQUENCES,

1) SHUT-OFF ISOLATION VALVES ON INTERIOR SIDE OF LOOP BEING

MODIFIED OR REMOVED TO MAINTAIN SERVICES TO ALL RISERS.

2) REMOVE SECTION OF PIPING, OR TAP TEMPORARY DRAIN CONNECTION

TO VERIFY VALVES ARE HOLDING FOR A MINIMUM PERIOD OF 24 HOURS.

3) IF NO VALVE LEAKAGE, OR MINIMAL AMOUNT, IS WITNESSED THAN

PROCEED TO PIPING MODIFICATION AND/OR DEMOLITION SCOPE OF WORK

IDENTIFIED.

4) IF MODERATE OR SIGNIFICANT VALVE LEAKAGE IS WITNESSED THAN

PROVIDE 1.5" VALVE TAP WITH THREADED CONNECTION TO HOSE TO

NEAREST MECHANICAL ROOM DRAIN DISCHARGE LOCATION. THIS

TEMPORARY DRAIN CONNECTION AND HOSE SHALL BE REMOVED ONCE

NEW RISER VALVE REPLACEMENTS ARE COMPLETED.

---CONTRACTOR WILL BE RESPONSIBLE TO KEEP ON SITE AT LEAST FOUR(4)

SETS OF 1.5" VALVES WITH THREADED CONNECTIONS AND TWO(2) 250' LONG

HOSES OF 1.5" DIAMETER IN SIZE.

CONTRACTOR ALLOWANCE FOR TEMP FIXTURES OR WATER SERVICES:

ASSUME THAT DURING THE COURSE OF THE 8 PHASE DOMESTIC WATER

LOOP REPLACEMENT THAT SPECIFIC AREAS WILL REQUIRE TEMPORARY

SINKS AND/OR EXTENSION OF TEMPORARY WATER SERVICES TO THEIR

DEPARTMENT. CONTRACTORS SHALL INCLUDE THE FOLLOWING

ALLOWANCES WITHIN THEIR BASE BID TO ACCOMMODATE THOSE

REQUESTS WHEN THEY ARISE DURING OUTAGE COORDINATION WITH VA

FACILITIES.

• INCLUDE UP TO TWELVE(12) TEMPORARY SINK FIXTURES TIED INTO AN

ADJACENT RISER SERVICE. EACH SINK WILL REQUIRE UP TO 50' OF

COPPER PIPE FOR WATER CONNECTIONS, OTHERWISE HOSE WILL BE

UTILIZED IF DISTANCE EXCEEDS THAT SPECIFIED AMOUNT OF PIPING.

• INCLUDE FOUR(4) TEMPORARY BACK-UP WATER CONNECTIONS FOR

COLD WATER SERVICE TO AN ENTIRE DEPARTMENT. TEMPORARY COLD

WATER MAIN SHALL BE ASSUMED AT 2" SIZE AND EXTEND A MAXIMUM OF

250' TO CONNECT INTO AN ADJACENT RISER SERVICE.

• NOTE THAT THE ABOVE IS FOR ENTIRE PROJECT, NOT PER PHASE.

23 29

G

1356-PP104.2

A.C

A.A

A.B

E.C

E.A E.B

1356-PP104.1

HJKL G

1356-PP103.1

1356-PP104.1

1356-PP104.2

E.C

E.A E.B

1356-PP104.1

HJKL

C W

C W

C W

G

8" CW

2 1/2" CHW

4" HW

H

2" SOFT

10" HPS

4" PC

5" CHWR

5" MPC

8" CHWS

8" CHWR

8" MPS

12" CHWR

12" CHWS

5" CHWS

5" CHWR

8" CHWS

8" CHWR

6" CW

5" HW

8" CW

2 1/2" CHW

12" CHWR

12" CHWS

6" PC

5" CHWR

2 1/2" V

2 1/2" HWS

5" CHWS

8" CHWS

6" CW

6" CW

6" CW

1/2" CW

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

A

CONSTRUCTION

DOCUMENTS SUBMISSION

FULLY SPRINKLERED

Office of Construction and Facilities Management

U.S. Department of Veterans Affairs

B

C

D

E

F

A

B

C

D

E

F

21 4 5 6 7 8 9 10

Phase

ARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT

321 4 5 6 7 8 9 10

TRUE NORTH

PLAN NORTH

B

D

C R e v it P ro je c ts

\V A

B u ild in g

P h a s e

M e c h a n ic a l ja s o n g o tt w a lt

.r v t

/3 /2

:4

:5

A M

BASEMENT INTERSTITIAL - PHASE

4 - DOMESTIC WATER PLAN

PREVENT LEGIONELLA,

PHASE III

MINNEAPOLIS

618-14-118

11/30/2022 JG TM / JG618-14-118

1356-PP104.1

NO SCALE

PHASE 4 - ISOMETRIC VIEW

1/4" = 1'-0"

ENLARGED - PHASE 4.3

1/16" = 1'-0"

PHASE 4.1 - DEMO

1/16" = 1'-0"

PHASE 4.2 - NEW

NO SCALE

PHASE 4 ELEVATION - EAST TUNNEL

NO SCALE

PHASE 4 ELEVATION - WATER SERVICE

CONNECTION

TO PREVIOUS

PHASE.

41360DATE REG. NO.

I HEREBY CERTIFY THAT THIS PLAN,

SPECIFICATION OR REPORT WAS PREPARED BY ME

OR UNDER MY DIRECT SUPERVISION AND THAT I

AM A DULY LICENSED PROFESSIONAL ENGINEER

UNDER THE LAWS OF THE STATE OF MINNESOTA.

JASON GOTTWALT, P.E.

Revisions: Date:

T S

T S

T S

T S

T S

T S

KEY NOTES: GENERAL NOTES:KEY NOTES:

A.C

A.A

A.B

SWH

70-NE-02

2 1/2" RHW

5" HW

4" CW

5" HW

5" HW

4" CW

PRESSURE REDUCING

STATION, REFER TO

DETAIL 3/PP500 AND

HYDRONIC PIPING DWGS

DWP

70-NE-02

DWP

70-NE-01

HJKL

NOTE THAT DOUBLE DASHED LINES REPRESENT

A STRUCTURAL MEZZANINE PLATFORM. PIPING

SHOWN IS BOTH ABOVE AND BELOW.

/2

/2

A.C

A.A

A.B

11 10

HJKL

NOTE THAT THESE KEY NOTES ARE SPECIFIC TO THIS DRAWING (DO

NOT REFER TO MASTER KEY NOTES ON SHEET 1356-PP003). NOT ALL

KEY NOTES ARE UTILIZED AND MAY HAVE GAPS OF MISSING NOTE

NUMBERS TO KEEP GROUPS OF TEN NOTES AVAILABLE PER PHASE.

NOTE THAT PLUMBING KEY NOTES 20 THROUGH 29 BELOW ARE

ASSOCIATED WITH DETAIL 2/PP104.2 ON THIS DRAWING. CLOSELY

COORDINATE INSTALLATION SCHEDULE OF WATER HEATER WITH VA

FACILITIES TO CLOSELY MONITOR EXISTING SYSTEMS THAT WILL

TEMPORARILY SUPPORT THE ENTIRE BUILDING.

STEAM REDUCING STATION SHOWN ON THIS DRAWING FOR

REFERENCE ONLY. REFER TO DRAWING MP104.1 FOR ALL STEAM

PIPING INSTALLATION NOTES AND DETAILS.

INSTALL A FULL SIZE 4" STAINLESS STEEL TRIPLE OFFSET BUTTERFLY

VALVE TO ISOLATE HOT WATER SERVICE FROM NEW WATER HEATER

SYSTEM. NOTE TO PROVIDE THIS VALVE DURING WEEKEND OUTAGE

WHEN CROSS-OVER PIPING CONNECTION TO RISER 'A' IS INSTALLED.

DURING WEEKEND OUTAGE OF RISER 'A' (PLUS NORTHEAST QUADRANT

OF LOWER LEVEL) INSTALL SECTION OF 6" PIPING BETWEEN POINTS OF

DISCONNECT, ALONG WITH VALVE SHOWN IN KEY NOTE #21, TO

TEMPORARILY FEED THOSE AREAS FROM MAIN LOOP WHILE NEW

WATER HEATER SYSTEMS ARE BEING INSTALLED.

PROVIDE TWO(2) RECIRCULATION PUMPS VERTICALLY STACKED IN A

PARALLEL PIPING CONFIGURATION WITH DUAL ISOLATION VALVES ON

EITHER SIDE AND FULL SIZED STRAINERS WITH BLOW-DOWN VALVES.

INCLUDE PRESSURE AND TEMPERATURE GAUGES ON BOTH SIDES OF

DUAL RECIRCULATION PUMP ASSEMBLIES.

PROVIDE A 1.5" CIRCUIT SETTER FOR BALANCING LARGE

RECIRCULATION TAKE-OFF TO RISER 'A' AND NE PORTION OF LOWER

LEVEL. INCLUDE PRESSURE AND TEMPERATURE GAUGES TO ASSIST IN

BALANCING ALONG WITH FULL SIZED ISOLATION VALVES ON EITHER

SIDE FOR SERVICING WHEN REQUIRED.

POINT OF CONNECTION FOR COLD WATER MAKE-UP TO NEW WATER

HEATERS FROM ISOLATION VALVE INSTALLED DURING PHASE 3 (SEE

DRAWING PP103). CONTRACTOR TO TEST, STERILIZE, AND

THOROUGHLY FLUSH NEW PIPING AND WATER HEATER SYSTEM PRIOR

TO ENGAGING INTO SERVICE.

VERIFY ADEQUATE SPACE FROM COLUMN FOR PULLING TUBE BUNDLES

OUT HORIZONTALLY. COORDINATE ALL OTHER SERVICE ACCESS WITH

VA FACILITIES REPRESENTATIVES.

PHASE 4.1 (DEMO - REFER TO DETAIL 1 AND 10-19 SERIES KEY NOTES):

REFER TO DRAWING PP104 DRAWINGS FOR DESCRIPTIVE NOTES AND

DETAILS OF THIS PHASE THAT IS DEFINED ON THAT DRAWING.

PHASE 4.2 (BUILD-BACK - REFER TO DETAIL 2 AND 20-29 SERIES KEY NOTES):

REFER TO DRAWING PP104 DRAWINGS FOR DESCRIPTIVE NOTES AND

DETAILS OF THIS PHASE THAT IS DEFINED ON THAT DRAWING.

PHASE 4.3 (WATER SERVICE REPLACEMENT - 30+ SERIES KEY NOTES):

REFER TO DRAWING PP104 DRAWINGS FOR DESCRIPTIVE NOTES AND

DETAILS OF THIS PHASE THAT IS DEFINED ON THAT DRAWING.

PHASE 4.4 (WATER HEATER INSTALLATION / FINAL CONNECTIONS):

MECHANICAL CONTRACTOR MAY SCHEDULE AND PERFORM

PREINSTALLATION OF EQUIPMENT AND PIPING DURING PHASES 1 THROUGH

4 AND MAKE ALL FINAL CONNECTIONS DURING PHASE 3.4 SERVICE OUTAGE.

ALL CONTROLS AND PIPING COMPONENTS SHALL BE FULLY TESTED AND

COMMISSIONED DURING PHASE 4 AND READY TO BE SHIFTED ONLINE PRIOR

TO ENTERING PHASE 5.1 DEMOLITION.

ISOLATION OF MAIN PIPING LOOP SECTIONS:

PERFORM THE FOLLOWING PROCEDURE STEPS TO PROPERLY ISOLATE

EACH SECTION OF PIPING LOOP AS DESCRIBED IN PHASING SEQUENCES,

1) SHUT-OFF ISOLATION VALVES ON INTERIOR SIDE OF LOOP BEING

MODIFIED OR REMOVED TO MAINTAIN SERVICES TO ALL RISERS.

2) REMOVE SECTION OF PIPING, OR TAP TEMPORARY DRAIN CONNECTION

TO VERIFY VALVES ARE HOLDING FOR A MINIMUM PERIOD OF 24 HOURS.

3) IF NO VALVE LEAKAGE, OR MINIMAL AMOUNT, IS WITNESSED THAN

PROCEED TO PIPING MODIFICATION AND/OR DEMOLITION SCOPE OF WORK

IDENTIFIED.

4) IF MODERATE OR SIGNIFICANT VALVE LEAKAGE IS WITNESSED THAN

PROVIDE 1.5" VALVE TAP WITH THREADED CONNECTION TO HOSE TO

NEAREST MECHANICAL ROOM DRAIN DISCHARGE LOCATION. THIS

TEMPORARY DRAIN CONNECTION AND HOSE SHALL BE REMOVED ONCE

NEW RISER VALVE REPLACEMENTS ARE COMPLETED.

---CONTRACTOR WILL BE RESPONSIBLE TO KEEP ON SITE AT LEAST FOUR(4)

SETS OF 1.5" VALVES WITH THREADED CONNECTIONS AND TWO(2) 250' LONG

HOSES OF 1.5" DIAMETER IN SIZE.

CONTRACTOR ALLOWANCE FOR TEMP FIXTURES OR WATER SERVICES:

ASSUME THAT DURING THE COURSE OF THE 8 PHASE DOMESTIC WATER

LOOP REPLACEMENT THAT SPECIFIC AREAS WILL REQUIRE TEMPORARY

SINKS AND/OR EXTENSION OF TEMPORARY WATER SERVICES TO THEIR

DEPARTMENT. CONTRACTORS SHALL INCLUDE THE FOLLOWING

ALLOWANCES WITHIN THEIR BASE BID TO ACCOMMODATE THOSE

REQUESTS WHEN THEY ARISE DURING OUTAGE COORDINATION WITH VA

FACILITIES.

• INCLUDE UP TO TWELVE(12) TEMPORARY SINK FIXTURES TIED INTO AN

ADJACENT RISER SERVICE. EACH SINK WILL REQUIRE UP TO 50' OF

COPPER PIPE FOR WATER CONNECTIONS, OTHERWISE HOSE WILL BE

UTILIZED IF DISTANCE EXCEEDS THAT SPECIFIED AMOUNT OF PIPING.

• INCLUDE FOUR(4) TEMPORARY BACK-UP WATER CONNECTIONS FOR

COLD WATER SERVICE TO AN ENTIRE DEPARTMENT. TEMPORARY COLD

WATER MAIN SHALL BE ASSUMED AT 2" SIZE AND EXTEND A MAXIMUM OF

250' TO CONNECT INTO AN ADJACENT RISER SERVICE.

• NOTE THAT THE ABOVE IS FOR ENTIRE PROJECT, NOT PER PHASE.

NOTE THAT THESE KEY NOTES ARE SPECIFIC TO THIS DRAWING (DO

NOT REFER TO MASTER KEY NOTES ON SHEET 1356-PP003). NOT ALL

KEY NOTES ARE UTILIZED AND MAY HAVE GAPS OF MISSING NOTE

NUMBERS TO KEEP GROUPS OF TEN NOTES AVAILABLE PER PHASE.

NOTE THAT DEMOLITION NOTES 10 THROUGH 19 BELOW ARE

ASSOCIATED WITH DETAIL 1/PP104.2 ON THIS DRAWING. DO NO

PERFORM ANY DEMOLITION UNTIL ISOLATION IS COORDINATED.

REMOVE EXISTING SECTIONS OF COLD WATER, HOT WATER, AND

RECIRC PIPING INDICATED ON DRAWING IN PREPARATION FOR NEW

WATER HEATER INSTALLATION. REFER TO PHASE 3 PLANS FOR

INSTALLATION OF ISOLATION VALVES NEEDED IN ORDER TO ALLOW

FOR PIPING DEMOLITION.

SECTION OF HOT WATER PIPING INDICATED FOR REMOVAL WILL NEED

TO REMAIN IN PLACE AS LONG AS POSSIBLE TO KEEP RISER 'A ' AND

NORTHEAST SECTION OF BASEMENT LEVEL IN SERVICE. HAVE PIPING

PREPARED TO ALONG FOR QUICK SWITCHOVER TO NEW WATER

HEATER SYSTEM DURING SCHEDULED WEEKEND OUTAGE.

REMOVE EXISTING HOT WATER HEAT EXCHANGERS AND

CONTROLLERS. ALL ASSOCIATED VALVES AND COMPONENTS SHALL

BE FULLY REMOVED AND DISPOSED OF BY CONTRACTOR. CLEAN UP

MEZZANINE AREA AND PATCH AREAS OF FLOOR GRATING CAUSED BY

DEMOLITION (VISIT SITE TO CONFIRM CONDITIONS PRIOR TO BID).

REMOVE EXISTING RECIRCULATION PUMP AND STAND. NOTE THAT

AFTER DISCONNECTION OF THIS RECIRCULATION SYSTEM THAT ENTIRE

BUILDING MAY SIGNIFICANTLY TREND OUT OF BALANCE. INTENT

WOULD BE FOR CONTRACTOR TO HAVE ALL TEMPERATURE SENSORS

FOR EACH RECIRCULATION LOOP APPROPRIATELY VERIFIED AND

ADDRESSED WITHIN BAS SYSTEM (SEE KEY NOTE #21 ON DRAWING

PP03). CONTRACTOR SHALL UTILIZE THESE TEMPERATURE SENSORS

TO MAKE ADJUSTMENTS ON SYSTEM TO COMPENSATE FOR PERIOD OF

TIME WITH REDUCED RECIRCULATION FLOW ORIGINATING ONLY FROM

SOUTHWEST PUMP.

TEMPORARILY DISCONNECT SET OF RPZ BACKFLOW ASSEMBLIES

FROM DOMESTIC WATER MAIN. CHECK EXISTING VALVE SEAL AND

TEMPORARILY CAP UNTIL RECONNECTION INTO WATER HEATER MAKE-

UP, AND RECONNECTION INTO RPZ VALVE ASSEMBLIES TO REMAIN.

REMOVE SET OF THREE(3) VALVES AT THIS LOCATION. CONFIRM IF VA

WOULD LIKE TO SALVAGE THESE VALVES BEFORE DISPOSAL.

14 25

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

A

CONSTRUCTION

DOCUMENTS SUBMISSION

FULLY SPRINKLERED

Office of Construction and Facilities Management

U.S. Department of Veterans Affairs

B

C

D

E

F

A

B

C

D

E

F

21 4 5 6 7 8 9 10

Phase

ARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT

321 4 5 6 7 8 9 10

TRUE NORTH

PLAN NORTH

B

C R e v it P ro je c ts

\V A

B u ild in g

P h a s e

M e c h a n ic a l ja s o n g o tt w a lt

.r v t

/3 /2

:4

:0

A M

BASEMENT INTERSTITIAL - PHASE

4.4 - DOMESTIC WATER PLAN

PREVENT LEGIONELLA,

PHASE III

MINNEAPOLIS

618-14-118

11/30/2022 JG TM / JG618-14-118

1356-PP104.2

1/4" = 1'-0"

ENLARGED - PHASE 4.4

1/4" = 1'-0"

ENLARGED DEMOLITION - PHASE 4.4

41360DATE REG. NO.

I HEREBY CERTIFY THAT THIS PLAN,

SPECIFICATION OR REPORT WAS PREPARED BY ME

OR UNDER MY DIRECT SUPERVISION AND THAT I

AM A DULY LICENSED PROFESSIONAL ENGINEER

UNDER THE LAWS OF THE STATE OF MINNESOTA.

JASON GOTTWALT, P.E.

T S

TS

T S

T S

KEY NOTES:

GENERAL NOTES:

TS T

S

T S

T S

T S

TU

2.C' 2.B'

2.A'

REFER TO DETAIL

1/1356-PP105.1

FOR VALVE LOCATION.

REFER TO DETAIL

1/1356-PP106.1

FOR VALVE

LOCATION.

DRAIN

1356-PP105.1

8"

4" HW

8" CW

2 1/2" CHW

/4

C H

W

Z

BW.A

BW.BBW.C

REFER TO DETAIL

1/1356-PP106.1 FOR

VALVE LOCATION.

REFER TO DETAIL

1/1356-PP105.1 FOR

VALVE LOCATION.

1 1/2" CW

DRAIN

2.5" TAKE-OFF VALVE

8" CW 8" CW

2 1/2" CHW

4" HW

A.B

A.C

8" CW

8" CW

2 1/2" RHW

8" CW

4" HW

2.B'

2.C'

2.A'

BW.B

BW.C

BW.A

TO BE

REPLACED

IN NEXT

PHASE

8" CW

NOTE THAT THESE KEY NOTES ARE SPECIFIC TO THIS DRAWING (DO

NOT REFER TO MASTER KEY NOTES ON SHEET 1356-PP003). NOT ALL

KEY NOTES ARE UTILIZED AND MAY HAVE GAPS OF MISSING NOTE

NUMBERS TO KEEP GROUPS OF TEN NOTES AVAILABLE PER PHASE.

INSTALL 8" SCHEDULE 10 STAINLESS STEEL PIPING MAIN ALONG NORTH

WALL OF SERVICE TUNNEL (WITHIN OPEN AREA OF EXISTING PIPE

RACK). CONTRACTOR SHALL PROVIDE ADDITIONAL SUPPORT BRACES

ON EXISTING PIPING RACK TO SUPPORT NEW PIPE CLAMPS. ALL PIPE

RACK MODIFICATIONS TO BE REVIEWED BY STRUCTURAL ENGINEER.

NOTE THAT NEW RISER VALVES SHALL BE PRE-INSTALLED DURING THIS

PHASE WHEN POSSIBLE. REFER TO ENLARGED PLANS FOR VALVE

REPLACEMENT INFORMATION.

PROVIDE TEMPORARY END CAPS AT EITHER SIDE OF NEW PIPING

SECTION. FIRST PERFORM A PRESSURE TEST ON PIPING SECTION PER

SPECIFICATION REQUIREMENTS, AND THEN STERILIZE PIPING USING

CHLORINE SOLUTION FOR AT LEASE 24 HOURS PRIOR TO FLUSHING.

INCLUDE DRAIN/FILL VALVES ON EITHER END TO ACCOMPLISH.

INSULATE ENTIRE LENGTH OF PIPING PER SPECIFICATION

REQUIREMENTS. INCLUDE CONTINUOUS PVC COVERING THROUGHOUT

AND PREPARE ENDS FOR EXTENSION TO NEXT SUB-PHASE PIPING

WHICH WILL INCLUDE INSULATING ALL VALVE BODIES.

EXISTING VALVE TO REMAIN UNTIL COMPLETION OF PHASE 5.2.

ROUTING OF NEW 8" COLD WATER MAIN THROUGH THIS AREA WILL BE

EXTREMELY CONSTRICTED BY EXISTING PIPING SERVICES ENTERING

TUNNEL. CONTRACTOR MAY NEED TO TEMPORARILY DISCONNECT AND

RECONNECT SOME SERVICE TO GET PROPER ACCESS ALONG WALL TO

ROUTE NEW PIPING MAIN THROUGH, AND/OR DEMOLISH EXISTING

PIPING MAIN ON COMPLETION. FIELD VERIFY SITE CONDITIONS.

NOT USED THROUGH KEY NOTE

PROVIDE TWO(2) 8" VALVES ON EITHER SIDE OF COLD WATER RISER

TAKE-OFF VALVE WITH NEW STAINLESS 8" TRIPLE OFFSET BUTTERFLY

VALVES AND ALSO REPLACE THE THIRD EXISTING TAKE OFF VALVE

(refer to plans for size info) WITH THE SAME MODEL VALVE AS MAIN LOOP.

INCLUDE A 1.5" STAINLESS STEEL BALL VALVE FOR DRAINING RISER IN

SECTION OF PIPING BETWEEN THESE THREE VALVES. NOTE THAT THIS

PHASE WILL BE HAPPENING CONCURRENTLY WITH RISER

REPLACEMENT CONNECTIONS. REFER TO THOSE NOTES FOR

STERILIZING AND FLUSHING ALL NEW PIPING AND VALVES PRIOR TO

CONNECTION INTO MAIN SYSTEM.

WHEN ALL PREINSTALLATION OF VALVES AND PIPING IS COMPLETED,

COORDINATE SERVICE OUTAGE PER GENERAL NOTE DESCRIPTION.

PERFORM RECONNECTION TO EXISTING PIPING AS REQUIRED.

DURING OUTAGE, INSTALL THERMOWELLS ON BOTH HOT AND COLD

WATER MAINS TO ACCEPT AN INSERTION TYPE TEMPERATURE SENSOR

TO BE INTEGRATED INTO BUILDING AUTOMATION SYSTEM FOR

INFORMATION MONITORING AND TRENDING.

INSTALL STRAP ON TEMPERATURE SENSORS INDICATED ON

RECIRCULATION PIPING. REPAIR ANY DAMAGED OR REMOVED

INSULATION ON COMPLETION.

ONCE VALVE INSTALLATION IS COMPLETED, INSULATE ALL AFFECTED

PIPING AND NEW VALVE BODIES COMPLETELY. COVER EVERYTHING

WITH PVC JACKET COVERS AND SEAL AS REQUIRED. INSULATION CAN

OCCUR DURING NORMAL HOURS AFTER OUTAGE COMPLETION, BUT

SHOULD NOT BE DELAYED FOR ANY MORE THAN 3 BUSINESS DAYS.

SHUT-OFF VALVE A.C AND VALVE M.B (BOTH FURTHER OUT TO NEXT

ADJACENT RISER VALVES OUTSIDE THE EXTENTS OF THIS PHASE

DRAWING) TO ISOLATE THIS SECTION OF PIPING FOR VALVE

REPLACEMENT. REFER TO GENERAL NOTES FOR PROVISIONS TO BE

TAKEN TO VERIFY ANY EXISTING VALVE LEAKAGE AND AREAS THAT

WILL BE AFFECTED BY THIS MAJOR WATER OUTAGE.

NOT USED THROUGH KEY NOTE

ONCE ISOLATED, REMOVE SECTION OF 8" GALVANIZED PIPING LOOP.

CUT INTO SECTIONS SMALL ENOUGH TO TRANSPORT TO LOADING

DOCK AREA FOR REMOVAL. INCLUDE DEMOLITION OF EXISTING

SUPPORTS MOUNTED TO PIPING RACKS, NEW PIPING WILL BE

SUPPORTED ONTO EXISTING RACK STRUCTURE BUT SHOULD BE

PROVIDED WITH NEW PIPE CLAMPS.

PHASE 5.1 (PREINSTALLATION) - DETAIL 1 AND 10-19 SERIES KEY NOTES):

APPROACH WITHIN THIS PHASE WILL BE SLIGHTLY DIFFERENT THAN

PREVIOUS PHASES 1-3 IN THAT THE NEW STAINLESS STEEL PIPING MAINS

WILL BE PREINSTALLED AND TESTED PRIOR TO DEMOLITION OF EXISTING

MAINS. REFER TO DETAIL 1 ON THIS DRAWING FOR LOCATION OF NEW

SECTION OF PIPING LOOP ON OPPOSITE NORTH WALL WITHIN AVAILABLE

SPACE OF EXISTING PIPING RACK ON THAT SIDE.

PHASE 5.2 (RECONNECT TO EXISTING RISERS - DETAILS 3 & 4 PLUS NOTES):

ALL NEW ISOLATION VALVES WILL BE PREINSTALLED, SANITIZED, FLUSHED,

AND TESTED PRIOR TO CONNECTION INTO EXISTING LOOP AND RISERS.

THIS SUB-PHASE WILL CAUSE A LARGE DOMESTIC WATER OUTAGE FOR

AREAS OF FACILITY THAT MAY BE CRITICAL, CONTRACTOR SHALL REFER TO

'ALLOWANCE FOR TEMP FIXTURES OR WATER SERVICES' BELOW FOR

ACCOMMODATIONS NEEDED FOR THOSE AREAS. OUTAGE WILL AFFECT THE

FOLLOWING DEPARTMENTS AND SHOULD BE CAREFULLY COORDINATED

WITH VA FACILITIES;

• BASEMENT LEVEL: SAFETY - DIRECTOR'S OFFICE, CANTEEN STORAGE,

NUCLEAR MEDICINE - PET SUITE, RADIOLOGY-MRI

• FIRST FLOOR: VOLUNTARY SERVICE, LIBRARY, MAS, EDUCATION,

PHARMACY OUTPATIENT, SECURITY ADMIN, FISCAL, VETERANS

ASSISTANCE/SERVICE ORGANIZATIONS, NUTRITION/FOOD SERVICE

• SECOND FLOOR: AUDIOLOGY, ACS (SPECIALTY) - EYE, IRM SERVICE,

SURGERY - AMBULATORY

• THIRD FLOOR: PHARMACY OUTPATIENT, REHABILITATION MEDICAL

SERVICE, EDUCATION, ACS (SPECIALTY) - GI CLINIC, ACS (PRIMARY) -

HYPERTENSION/RENAL CLINIC, OUT LEASED - VISN

• FOURTH FLOOR: ECR - GRECC, EDUCATION, DIRECTOR'S SUITE, MEDICAL

MEDIA, MEDICAL RESEARCH - BRAIN SCIENCE.

PHASE 5.3 (DEMO - REFER TO DETAIL 2 AND 30+ SERIES KEY NOTES):

AFTER ALL NEW PIPING HAS BEEN INSTALLED AND RECONNECTED INTO

MAIN LOOP, THEN THE EXISTING GALVANIZED 8" COLD WATER PIPING MAIN

MAY REMOVED. SINCE ALL OUTAGES WERE PERFORMED IN PREVIOUS

PHASE THERE WILL BE NO RESTRICTIONS OR OUTAGE COORDINATION

NECESSARY DURING THIS SUB-PHASE.

ISOLATION OF MAIN PIPING LOOP SECTIONS:

PERFORM THE FOLLOWING PROCEDURE STEPS TO PROPERLY ISOLATE

EACH SECTION OF PIPING LOOP AS DESCRIBED IN PHASING SEQUENCES,

1) SHUT-OFF ISOLATION VALVES ON INTERIOR SIDE OF LOOP BEING

MODIFIED OR REMOVED TO MAINTAIN SERVICES TO ALL RISERS.

2) REMOVE SECTION OF PIPING, OR TAP TEMPORARY DRAIN CONNECTION

TO VERIFY VALVES ARE HOLDING FOR A MINIMUM PERIOD OF 24 HOURS.

3) IF NO VALVE LEAKAGE, OR MINIMAL AMOUNT, IS WITNESSED THAN

PROCEED TO PIPING MODIFICATION AND/OR DEMOLITION SCOPE OF WORK

IDENTIFIED.

4) IF MODERATE OR SIGNIFICANT VALVE LEAKAGE IS WITNESSED THAN

PROVIDE 1.5" VALVE TAP WITH THREADED CONNECTION TO HOSE TO

NEAREST MECHANICAL ROOM DRAIN DISCHARGE LOCATION. THIS

TEMPORARY DRAIN CONNECTION AND HOSE SHALL BE REMOVED ONCE

NEW RISER VALVE REPLACEMENTS ARE COMPLETED.

---CONTRACTOR WILL BE RESPONSIBLE TO KEEP ON SITE AT LEAST FOUR(4)

SETS OF 1.5" VALVES WITH THREADED CONNECTIONS AND TWO(2) 250' LONG

HOSES OF 1.5" DIAMETER IN SIZE.

CONTRACTOR ALLOWANCE FOR TEMP FIXTURES OR WATER SERVICES:

ASSUME THAT DURING THE COURSE OF THE 8 PHASE DOMESTIC WATER

LOOP REPLACEMENT THAT SPECIFIC AREAS WILL REQUIRE TEMPORARY

SINKS AND/OR EXTENSION OF TEMPORARY WATER SERVICES TO THEIR

DEPARTMENT. CONTRACTORS SHALL INCLUDE THE FOLLOWING

ALLOWANCES WITHIN THEIR BASE BID TO ACCOMMODATE THOSE

REQUESTS WHEN THEY ARISE DURING OUTAGE COORDINATION WITH VA

FACILITIES.

• INCLUDE UP TO TWELVE(12) TEMPORARY SINK FIXTURES TIED INTO AN

ADJACENT RISER SERVICE. EACH SINK WILL REQUIRE UP TO 50' OF

COPPER PIPE FOR WATER CONNECTIONS, OTHERWISE HOSE WILL BE

UTILIZED IF DISTANCE EXCEEDS THAT SPECIFIED AMOUNT OF PIPING.

• INCLUDE FOUR(4) TEMPORARY BACK-UP WATER CONNECTIONS FOR

COLD WATER SERVICE TO AN ENTIRE DEPARTMENT. TEMPORARY COLD

WATER MAIN SHALL BE ASSUMED AT 2" SIZE AND EXTEND A MAXIMUM OF

250' TO CONNECT INTO AN ADJACENT RISER SERVICE.

• NOTE THAT THE ABOVE IS FOR ENTIRE PROJECT, NOT PER PHASE.

NPQRSTUVWXYZ

1356-PP105.1

1356-PP105.1

A.B

A.C

2.C'

2.A'

2.B'

BW.A'

BW.A

BW.C BW.B

BW.B'BW.C'

10 12 13 10 12 13 10 12 13

CONTRACTOR NOTE: NEED TO CAREFULLY

SITE SURVEY THIS AREA FOR ROUTING AND

DISPLACEMENT OF EXISTING SERVICES

1356-PP105.1

1356-PP105.1

JKLM

8" CW8" CW8" CW8" CW8" CW

NPQRSTUVWXYZ

BW.C

BW.C'

BW.A'

BW.A

BW.B'

BW.B

2.C'

2.A'

2.B'

A.C

A.B

30 30 30

JKLM

8" CW 2 1/2" RHW

4" HW

8" CW

J

3/4" CW

10" HPS

12" HPS

10" HPS

8" CHWS

8" CHWR

6" PC

20" CHWS

20" CHWR

12" CHWR12" CHWS

4" HW

8" CW

4" CW

8" CW

2 1/2" RHW

8" CHWR

8" CHWS

10" HPS

2" MPS

2" MPC

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

A

CONSTRUCTION

DOCUMENTS SUBMISSION

FULLY SPRINKLERED

Office of Construction and Facilities Management

U.S. Department of Veterans Affairs

B

C

D

E

F

A

B

C

D

E

F

21 4 5 6 7 8 9 10

Phase

ARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT

321 4 5 6 7 8 9 10

TRUE NORTH

PLAN NORTH

A B

C R e v it P ro je c ts

\V A

B u ild in g

P h a s e

M e c h a n ic a l ja s o n g o tt w a lt

.r v t

/3 /2

:4

:0

A M

BASEMENT INTERSTITIAL - PHASE

5 - DOMESTIC WATER PLAN

PREVENT LEGIONELLA,

PHASE III

MINNEAPOLIS

618-14-118

11/30/2022 JG TM / JG618-14-118

1356-PP105.1

1/4" = 1'-0"

ENLARGED - PHASE 5.2.1

1/4" = 1'-0"

ENLARGED - PHASE 5.2.2

NO SCALE

PHASE 5 - ISOMETRIC VIEW

1/16" = 1'-0"

PHASE 5.1 - NEW

1/16" = 1'-0"

PHASE 5.3 DEMO

NO SCALE

PHASE 5 ELEVATION - EAST TUNNEL

NO SCALE

PHASE 5 ELEVATION - NORTH TUNNEL

CONNECTION

TO PREVIOUS

PHASE.

41360DATE REG. NO.

I HEREBY CERTIFY THAT THIS PLAN,

SPECIFICATION OR REPORT WAS PREPARED BY ME

OR UNDER MY DIRECT SUPERVISION AND THAT I

AM A DULY LICENSED PROFESSIONAL ENGINEER

UNDER THE LAWS OF THE STATE OF MINNESOTA.

JASON GOTTWALT, P.E.

TS

S

TS

T S

T S

T S

T S

T S

KEY NOTES: GENERAL NOTES:

T S

T S

UV

4" CW

4" CW

UV

SHAFT 2

SHAFT 3

4" CW

3" CW

3" CW UP

2 1/2" HW UP

3" CW UP

1" RHW UP

UVWXYZAABBCCDDEEFFGGHH

1 1 1

TO VALVE M.C, SEE

1/1356-PP106.1

TO VALVE BP.B,

SEE 1/1356-PP107.1

SHAFT 2

SHAFT 3

3.B

3.A

3.C

4" CW

C W

C W

8" CW

C W

C W

H W

/4

R H

W

C W

/2

H W

R H

W

C W

3/4" CW

2 1/2" CW

3" CW UP

1" RHW UP 2 1/2" HW UP

3" CW UP

WARNING: CONGESTED

AREA OF INTERSTITIAL

SURROUNDING SHAFT #2

4" CW

4" CW

1 BEFORE OUTAGE: REMOVE ABANDONED 4" COPPER PIPING AND

REPLACE WITH NEW PIPING TO SERVE SHAFT 2 AND SHAFT 3. EXTEND

TAKEOFF PIPING TO SHAFT 2, SHAFT 3 AND BRANCHES SERVING

BASEMENT LEVEL AS INDICATED ON PLAN. CONTRACTOR TO VERIFY

PIPE SIZING AND OUTAGE AREAS PRIOR TO CONSTRUCTION.

DURING OUTAGE: CLOSE VALVES M.C (1/1356-PP106.1) AND BP.B

(1/1356-PP107.1) TO MAKE TEMPORARY CONNCTION INTO EXISTING

MAIN. NEW RISER VALVE ASSEMBLY TO BE INSTALLED IN PHASE 7.

MAKE FINAL CONNECTIONS TO SHAFT 2, SHAFT 3, SHAFT 3

ASSOCIATED TAKEOFFS ON ALL LEVELS (1356-PP105.3), AND BRANCH

TAKEOFFS SERVING BASMENT LEVEL.

AFTER OUTAGE: REFER TO ASSOCIATED LEVEL DEMOLITION VIEWS

AND KEY NOTE 2.

AFTER OUTAGE: REMOVE ABANDONED COLD WATER RISER PIPING.

DEADLEG OR ABANDONED PIPING SHALL NOT REMAIN.

NOTE TO CONTRACTOR: THERE IS A REASON WHY NEW COLD

WATER MAIN ROUTING DOES NOT FOLLOW THIS EXISTING PATH.

AREA IS EXTREMELY CONGESTED WITH 'CHALLENGING

ACCESSIBILITY'. DEMOLISHED PIPING MAY NEED TO BE CUT INTO

SMALL SECTIONS FOR REMOVAL. FIELD VERIFY SITE CONDITIONS

PRIOR TO BID.

LABEL COLD WATER MAIN "NEW VALVE ASSEMBLY SERVING SHAFT 2

AND SHAFT 3 LOCATED SOUTH OF COLUMN 25/GG." REFER TO KEY

NOTE #7 BELOW.

SIGNIFICANT DUCTWORK CONGESTION IN THIS AREA. CONTRACTOR

WILL BE REQUIRED TO OFFSET PIPING AROUND DUCT

OBSTRUCTIONS AND FOLLOW APPROXIMATE PATH INDICATE AROUND

MOST CONSTRICTIVE AREAS. CONTRACTOR MAY BE REQUIRED TO

DISCONNECT AND RECONNECT SOME DUCT MAINS FOR ACCESS AND

CONSTRUCTABILITY, COORDINATE SCHEDULE OF ASSOCIATED HVAC

OUTAGES WITH VA REPRESENTATIVES. FIELD VERIFY SITE

CONDITIONS.

REFER TO DRAWING 1356-PP105.3 FOR CONTINUATION AND

REPLACEMENT OF EXISTING GALVANIZED RISER WITHIN SHAFT #3

ABOVE. CORE DRILL NEW PIPE PENTRATION FOR PARALLED RISER

TO BE INSTALLED PRIOR TO DEMOLITION OF EXISTING.

DISCONNECT AND RECONNECT SHAFT #2 AT BASE OF RISER DURING

SCHEDULED OUTAGE.

CLEARLY LABEL RISER TAKE-OFF VALVE TO SERVE BOTH SHAFT #2

AND SHAFT #3 RISERS. ALSO INDICATE THAT CORRESPONDING HOT

WATER AND RECIRC VALVE ARE LOCATED IN SERVICE TUNNEL NEAR

GRIDLINES 32/U. REFER TO KEY NOTE #3 ABOVE.

A.

B.

C.

D.

E.

F.

THE OUTLINE OF 'MEANS-AND-METHODS' NOTES BELOW FOR VERTICAL

COLD WATER RISER REPLACEMENTS INDICATED WITHIN THESE

DRAWINGS IS NOT INTENDED TO BE ALL-INCLUSIVE OF EFFORT

REQUIRED BY CONTRACTOR. NOR ARE THESE NOTES AND/OR

SUGGESTIONS MEANT TO LIMIT CONTRACTORS FROM DEVELOPING

THEIR OWN APPROACH THAT MAY BE CONSIDERED MORE COST

EFFECTIVE OR SAFE. THESE NOTES ARE MAINLY MEANT TO QUALIFY

EXISTING CONDITIONS AND DEFINE MINIMUM LEVEL OF PLANNING

REQUIRED BY VA FOR EACH OF THESE TIME SENSITIVE OUTAGES.

NO MAJOR WATER OUTAGE SHALL LAST MORE THAN 12 HOURS IN

DURATION. PLUMBING CONTRACTOR TO DETERMINE ADEQUATE

NUMBER OF PLUMBER CREWS REQUIRED TO PERFORM MULTIPLE

TASKS SIMULTANEOUSLY DURING OUTAGES. ALL OUTAGES SHALL BE

ASSUMED TO BE PERFORMED DURING WEEKEND OR NIGHT OVERTIME

HOURS WHEN BIDDING THIS PROJECT.

VERTICAL RISER REPLACEMENT (TYPE 1 - WITHIN MECHANICAL ROOM)

• FOR RISERS WITHIN MECHANICAL ROOMS, CONTRACTOR SHALL

CORE DRILL HOLES THROUGH FLOOR ADJACENT TO EXISTING

PLUMBING RISER FOR NEW INSTALLATION. EXISTING FLOOR

PENETRATIONS AND/OR SLEEVE SHALL BE PATCHED FLUSH TO

EXISTING FLOOR AS REQUIRE UPON DEMOLITION OF THOSE RISERS.

• EXISTINGT TAKE-OFF VALVES MAY REQUIRE RELOCATION FOR

CONNECTION INTO NEW RISER. VERIFY ADEQUATE ACCESS TO ALL

TAKE-OFF VALVES AND PROVIDE WITH NEW LAMINATE SIGNAGE.

ANY VALVES FOUND AT INACCESSIBLE LOCATIONS SHALL BE

RELOCATED BY CONTRACTOR.

• REFER TO CLIN 3001 FOR REPLACEMENT OF ALL ICRCUIT SETTER

VALVES WITHIN ENTIRE BUILDING. PLUMBING CONTRACTOR MAY

OPT TO HAVE DEDICATED CREWS ASSIGNED TO THIS TASK DURING

RISER OUTAGE TO LIMIT NUMBER OF SECONDARY OUTAGES

REQUIRED. HOWEVER, IF ENOUGH PLUMBERS ARE AVAILABLE TO

ACHIEVE THIS DURING LIMITED OUTAGE TIMEFRAME, THAN REFER

TO GENERAL NOTES ON DRAWING PP002 FOR 'LARGE OUTAGES' TO

PERFORM PRIOR TO THE MAJOR RISER OUTAGE.

VERTICAL RISER REPLACEMENT (TYPE 2 - WITHIN ENCLOSED SHAFT)

• IN GENERAL, MAJOR RATED SHAFTS SHOWN IN THESE DRAWINGS

HAVE EXISTING FULL SIZED ACCESS DOOR FROM BASE OF SHAFT

ON FIRST FLOOR LEVEL. HOWEVER, THAT IS TYPICALLY THE ONLY

ACCESS INTO THESE SHAFTS THAT ARE FULLY OPEN (NO

INTERMEDIATE FLOOR STRUCTURES) UP THROUGH PENTHOUSE

LEVEL WHERE RATED WALLS ARE BUILT-UP WITH LID (TYPICALLY

12'+) WITHIN ENCLOSED PENTHOUSE LEVEL.

• IN ORDER TO GAIN ACCESS TO TOP OF SHAFT, CONTRACTOR WILL

BE REQUIRED TO FURNSIH AND INSTALL FIRE RATED DOOR

ASSEMBLIES FROM PENTHOUSE LEVEL. THESE DOORS MAY BE

USED IN CONJUCTION OF RIGGING FOR BOSUN CHAIRS FROM TOP

OF SHAFT IF CONTRACTOR DEEMS THAT AS SAFE AFTER REVIEW

WITH THEIR INTERNAL SAFETY OFFICIAL.

• IN ADDITION TO ACCESS ON TOP LEVEL OF SHAFT, CONTRACTOR

WILL HAVE OPPORTUNITIES TO INSTALL 24"X24" OR 48"X24" FIRE

RATED ACCESS PANELS ON ANY OTHER LEVEL REQUIRED (BUT

ONLY FROM INTERSTITIAL SPACE, INSTALLATION OF ACCESS

PANELS FROM PATIENT CARE AREAS WILL NOT BE PERMITTED).

• CONTRACTOR WILL BE REQUIRED TO PROVIDE THEIR OWN

SCAFFOLDING REQUIRED AT EACH LEVEL TO INSTALL NEW COLD

WATER RISERS ADJACENT TO EXISTING PRIOR TO SIOWTCHOVER

OUTAGE. SCAFFOLDS SHOULD BE STRATEGICALLY PLACE TO

ALLOW ACCESS FOR RECONNECTION TO FLOOR TAKE-OFF PIPING

INSIDE OF EACH SHAFT.

• EXISTING CONDITION PDF SKETCHES ARE PROVIDED ON DRAWINGS

WHERE WORK INSIDE CONFINED AREAS OF RATED SHAFTS IS

REQUIRED. THESE SKETCHES ARE FOR CONTRACTOR REFERENCE

ONLY AND MAY NOT FULLY INDICATE ALL SERVICES WITHIN SHAFT

ENCLOSURES. CONTRACTOR WILL BE REQUIRED TO FIELD VERIFY

ACTUAL SITE CONDITIONS OF EACH SHAFT WHILE DEVELOPING

ACCESS AND SAFETY PLANNING.

NOTE THAT SOME AREAS HAVE EXISTING COPPER MAINS INTENDED TO

REPLACE GALVANIZED RISERS. HOWEVER THESE MAINS WERE

INSTALLED UP TO 15-25 YEARS AGO AND THEIR INTEGRITY IS

QUESTIONABLE. CONTRACTOR MAY UTILIZE THE EXISTING ROUTE, AND

CORRESPONDING SUPPORT HANGERS, BUT MUST FULLY REMOVE ALL

ABANDONED/UNUSED COPPER PIPING MAINS. ONCE OFF SITE THE

CONTRACTOR MAY TAKE OWNERSHIP OF PIPING FOR RECYLCING OR

REPURPOSING, BUT IT SHALL NOT BE UTILIZED WITHIN THIS PROJECT.

NO EXISTING PIPING WILL BE ALLOWED TO BE LEFT ABANDONED. SOME

AREAS HAVE RESTRICITVE ACCESS DUE TO SURROUNDING PIPES

AND/OR STRUCTURE AND MAY REQUIRE TEMPORARY REMOVAL OF

PIPING OR DUCTWORK TO GAIN ACCESS FOR DEMOLITION.

CONTRACTOR TO ASSUME SOME LEVEL OF DISCONNECT/RECONNECT

OF EXISTING SERVICES TO GAIN ACCCESS FOR COMPLETE DEMOLITION

OF EXISTING PIPING, OR INSTALLATION OF NEW PIPE IN CONGESTED

AREAS. REFER TO DRAWING NOTES FOR ADDITIONAL INFORMATION.

U

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

A

CONSTRUCTION

DOCUMENTS SUBMISSION

FULLY SPRINKLERED

Office of Construction and Facilities Management

U.S. Department of Veterans Affairs

B

C

D

E

F

A

B

C

D

E

F

21 4 5 6 7 8 9 10

Phase

ARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT

321 4 5 6 7 8 9 10

TRUE NORTH

PLAN NORTH

B

C D

C R e v it P ro je c ts

\V A

B u ild in g

P h a s e

M e c h a n ic a l ja s o n g o tt w a lt

.r v t

/3 /2

:4

:2

A M

BASEMENT - PHASE 5 - ENLARGED

SHAFT 3 COLD WATER

REPLACEMENT PLANS

PREVENT LEGIONELLA,

PHASE III

MINNEAPOLIS

618-14-118

11/30/2022 JG TM / JG618-14-118

1356-PP105.2

1/8" = 1'-0"

BASEMENT - SHAFT 3 REPLACEMENT DEMO (1/2)

1/8" = 1'-0"

BASEMENT - SHAFT 3 REPLACEMENT DEMO (2/2)

1/8" = 1'-0"

BASEMENT - SHAFT 3 REPLACEMENT NEW (1/2)

NO SCALE

SHAFT 2 - BASEMENT DETAIL

NO SCALE

SHAFT 3 - BASEMENT DETAIL

1/8" = 1'-0"

BASEMENT - SHAFT 3 REPLACEMENT NEW (2/2)

41360DATE REG. NO.

I HEREBY CERTIFY THAT THIS PLAN,

SPECIFICATION OR REPORT WAS PREPARED BY ME

OR UNDER MY DIRECT SUPERVISION AND THAT I

AM A DULY LICENSED PROFESSIONAL ENGINEER

UNDER THE LAWS OF THE STATE OF MINNESOTA.

JASON GOTTWALT, P.E.

T S

KEY NOTES:

GENERAL NOTES:

U

3" CW UP & DN

1" RHW UP & DN

2 1/2" HW UP & DN

3" CW UP & DN

U

3" CW UP & DN

1" RHW UP & DN

2 1/2" HW UP & DN

3" CW UP & DN

2 1/2" CW

U

23" CW UP & DN

1" RHW DN

3/4" RHW UP

2 1/2" HW UP & DN

3" CW UP & DN

U

3" CW UP & DN

1" RHW DN

3/4" RHW UP

2 1/2" HW UP & DN

3" CW UP & DN

2" CW

U

3" CW DN

2 1/2" CW UP

3/4" RHW DN

1/2" RHW UP

2 1/2" HW DN

3/4" HW UP

2 1/2" CW UP

3" CW DN

U

3" CW DN

2 1/2" CW UP

3/4" RHW DN

1/2" RHW UP

2 1/2" HW DN

3/4" HW UP

3" CW UP

2 1/2" CW UP

U

2 1/2" CW DN

1/2" RHW DN

3/4" HW DN

2 1/2" CW DN

U

2 1/2" CW DN

1/2" RHW DN

3/4" HW DN

2 1/2" CW DN

1 BEFORE OUTAGE: ROUTE NEW SHAFT 3 PIPING PARALLEL TO

EXISTING PIPING TO LEVEL ABOVE. EXTEND NEW TAKEOFFS TO

EXISTING BRANCH TAKEOFFS AND PREPARE FOR NEW CONNECTION.

CONTRACTOR TO VERIFY PIPE SIZING AND OUTAGE AREAS PRIOR TO

CONSTRUCTION.

DURING OUTAGE: DISCONNECT EXISTING BRANCH TAKEOFFS AND

REMOVE TAKEOFF PIPING. MAKE TAKEOFF FINAL CONNECTIONS.

ABANDON EXISTING COLD WATER RISER PIPING TO BE DEMOLISHED

AFTER ALL SHAFT 3 FINAL CONNECTIONS ARE MADE AND OUTAGE IS

COMPLETE.

AFTER OUTAGE: REFER TO ASSOCIATED LEVEL DEMOLITION VIEW

AND KEY NOTE 2.

AFTER OUTAGE: REMOVE ABANDONED COLD WATER RISER PIPING.

DEADLEG OR ABANDONED PIPING SHALL NOT REMAIN.

A.

B.

C.

D.

E.

F.

THE OUTLINE OF 'MEANS-AND-METHODS' NOTES BELOW FOR VERTICAL

COLD WATER RISER REPLACEMENTS INDICATED WITHIN THESE

DRAWINGS IS NOT INTENDED TO BE ALL-INCLUSIVE OF EFFORT

REQUIRED BY CONTRACTOR. NOR ARE THESE NOTES AND/OR

SUGGESTIONS MEANT TO LIMIT CONTRACTORS FROM DEVELOPING

THEIR OWN APPROACH THAT MAY BE CONSIDERED MORE COST

EFFECTIVE OR SAFE. THESE NOTES ARE MAINLY MEANT TO QUALIFY

EXISTING CONDITIONS AND DEFINE MINIMUM LEVEL OF PLANNING

REQUIRED BY VA FOR EACH OF THESE TIME SENSITIVE OUTAGES.

NO MAJOR WATER OUTAGE SHALL LAST MORE THAN 12 HOURS IN

DURATION. PLUMBING CONTRACTOR TO DETERMINE ADEQUATE

NUMBER OF PLUMBER CREWS REQUIRED TO PERFORM MULTIPLE

TASKS SIMULTANEOUSLY DURING OUTAGES. ALL OUTAGES SHALL BE

ASSUMED TO BE PERFORMED DURING WEEKEND OR NIGHT OVERTIME

HOURS WHEN BIDDING THIS PROJECT.

VERTICAL RISER REPLACEMENT (TYPE 1 - WITHIN MECHANICAL ROOM)

• FOR RISERS WITHIN MECHANICAL ROOMS, CONTRACTOR SHALL

CORE DRILL HOLES THROUGH FLOOR ADJACENT TO EXISTING

PLUMBING RISER FOR NEW INSTALLATION. EXISTING FLOOR

PENETRATIONS AND/OR SLEEVE SHALL BE PATCHED FLUSH TO

EXISTING FLOOR AS REQUIRE UPON DEMOLITION OF THOSE RISERS.

• EXISTINGT TAKE-OFF VALVES MAY REQUIRE RELOCATION FOR

CONNECTION INTO NEW RISER. VERIFY ADEQUATE ACCESS TO ALL

TAKE-OFF VALVES AND PROVIDE WITH NEW LAMINATE SIGNAGE.

ANY VALVES FOUND AT INACCESSIBLE LOCATIONS SHALL BE

RELOCATED BY CONTRACTOR.

• REFER TO CLIN 3001 FOR REPLACEMENT OF ALL ICRCUIT SETTER

VALVES WITHIN ENTIRE BUILDING. PLUMBING CONTRACTOR MAY

OPT TO HAVE DEDICATED CREWS ASSIGNED TO THIS TASK DURING

RISER OUTAGE TO LIMIT NUMBER OF SECONDARY OUTAGES

REQUIRED. HOWEVER, IF ENOUGH PLUMBERS ARE AVAILABLE TO

ACHIEVE THIS DURING LIMITED OUTAGE TIMEFRAME, THAN REFER

TO GENERAL NOTES ON DRAWING PP002 FOR 'LARGE OUTAGES' TO

PERFORM PRIOR TO THE MAJOR RISER OUTAGE.

VERTICAL RISER REPLACEMENT (TYPE 2 - WITHIN ENCLOSED SHAFT)

• IN GENERAL, MAJOR RATED SHAFTS SHOWN IN THESE DRAWINGS

HAVE EXISTING FULL SIZED ACCESS DOOR FROM BASE OF SHAFT

ON FIRST FLOOR LEVEL. HOWEVER, THAT IS TYPICALLY THE ONLY

ACCESS INTO THESE SHAFTS THAT ARE FULLY OPEN (NO

INTERMEDIATE FLOOR STRUCTURES) UP THROUGH PENTHOUSE

LEVEL WHERE RATED WALLS ARE BUILT-UP WITH LID (TYPICALLY

12'+) WITHIN ENCLOSED PENTHOUSE LEVEL.

• IN ORDER TO GAIN ACCESS TO TOP OF SHAFT, CONTRACTOR WILL

BE REQUIRED TO FURNSIH AND INSTALL FIRE RATED DOOR

ASSEMBLIES FROM PENTHOUSE LEVEL. THESE DOORS MAY BE

USED IN CONJUCTION OF RIGGING FOR BOSUN CHAIRS FROM TOP

OF SHAFT IF CONTRACTOR DEEMS THAT AS SAFE AFTER REVIEW

WITH THEIR INTERNAL SAFETY OFFICIAL.

• IN ADDITION TO ACCESS ON TOP LEVEL OF SHAFT, CONTRACTOR

WILL HAVE OPPORTUNITIES TO INSTALL 24"X24" OR 48"X24" FIRE

RATED ACCESS PANELS ON ANY OTHER LEVEL REQUIRED (BUT

ONLY FROM INTERSTITIAL SPACE, INSTALLATION OF ACCESS

PANELS FROM PATIENT CARE AREAS WILL NOT BE PERMITTED).

• CONTRACTOR WILL BE REQUIRED TO PROVIDE THEIR OWN

SCAFFOLDING REQUIRED AT EACH LEVEL TO INSTALL NEW COLD

WATER RISERS ADJACENT TO EXISTING PRIOR TO SIOWTCHOVER

OUTAGE. SCAFFOLDS SHOULD BE STRATEGICALLY PLACE TO

ALLOW ACCESS FOR RECONNECTION TO FLOOR TAKE-OFF PIPING

INSIDE OF EACH SHAFT.

• EXISTING CONDITION PDF SKETCHES ARE PROVIDED ON DRAWINGS

WHERE WORK INSIDE CONFINED AREAS OF RATED SHAFTS IS

REQUIRED. THESE SKETCHES ARE FOR CONTRACTOR REFERENCE

ONLY AND MAY NOT FULLY INDICATE ALL SERVICES WITHIN SHAFT

ENCLOSURES. CONTRACTOR WILL BE REQUIRED TO FIELD VERIFY

ACTUAL SITE CONDITIONS OF EACH SHAFT WHILE DEVELOPING

ACCESS AND SAFETY PLANNING.

NOTE THAT SOME AREAS HAVE EXISTING COPPER MAINS INTENDED TO

REPLACE GALVANIZED RISERS. HOWEVER THESE MAINS WERE

INSTALLED UP TO 15-25 YEARS AGO AND THEIR INTEGRITY IS

QUESTIONABLE. CONTRACTOR MAY UTILIZE THE EXISTING ROUTE, AND

CORRESPONDING SUPPORT HANGERS, BUT MUST FULLY REMOVE ALL

ABANDONED/UNUSED COPPER PIPING MAINS. ONCE OFF SITE THE

CONTRACTOR MAY TAKE OWNERSHIP OF PIPING FOR RECYLCING OR

REPURPOSING, BUT IT SHALL NOT BE UTILIZED WITHIN THIS PROJECT.

NO EXISTING PIPING WILL BE ALLOWED TO BE LEFT ABANDONED. SOME

AREAS HAVE RESTRICITVE ACCESS DUE TO SURROUNDING PIPES

AND/OR STRUCTURE AND MAY REQUIRE TEMPORARY REMOVAL OF

PIPING OR DUCTWORK TO GAIN ACCESS FOR DEMOLITION.

CONTRACTOR TO ASSUME SOME LEVEL OF DISCONNECT/RECONNECT

OF EXISTING SERVICES TO GAIN ACCCESS FOR COMPLETE DEMOLITION

OF EXISTING PIPING, OR INSTALLATION OF NEW PIPE IN CONGESTED

AREAS. REFER TO DRAWING NOTES FOR ADDITIONAL INFORMATION.

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

A

CONSTRUCTION

DOCUMENTS SUBMISSION

FULLY SPRINKLERED

Office of Construction and Facilities Management

U.S. Department of Veterans Affairs

B

C

D

E

F

A

B

C

D

E

F

21 4 5 6 7 8 9 10

Phase

ARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT

321 4 5 6 7 8 9 10

TRUE NORTH

PLAN NORTH

D

C R e v it P ro je c ts

\V A

B u ild in g

P h a s e

M e c h a n ic a l ja s o n g o tt w a lt

.r v t

/3 /2

:4

:2

A M

LEVELS 1-4 - PHASE 5 - ENLARGED

SHAFT 3 COLD WATER

REPLACEMENT PLANS

PREVENT LEGIONELLA,

PHASE III

MINNEAPOLIS

618-14-118

11/30/2022 JG TM / JG618-14-118

1356-PP105.3

NO SCALE

SHAFT 3 - FIRST LEVEL DETAIL

NO SCALE

SHAFT 3 - SECOND LEVEL DETAIL

NO SCALE

SHAFT 3 - THIRD LEVEL DETAIL

NO SCALE

SHAFT 3 - FOURTH LEVEL DETAIL

1/8" = 1'-0"

FIRST LEVEL - SHAFT 3 REPLACEMENT DEMO

1/8" = 1'-0"

FIRST LEVEL - SHAFT 3 REPLACEMENT NEW

1/8" = 1'-0"

SECOND LEVEL - SHAFT 3 REPLACEMENT DEMO

1/8" = 1'-0"

SECOND LEVEL - SHAFT 3 REPLACEMENT NEW

1/8" = 1'-0"

THIRD LEVEL - SHAFT 3 REPLACEMENT DEMO

1/8" = 1'-0"

THIRD LEVEL - SHAFT 3 REPLACEMENT NEW

1/8" = 1'-0"

FOUTH LEVEL - SHAFT 3 REPLACEMENT DEMO

1/8" = 1'-0"

FOURTH LEVEL - SHAFT 3 REPLACEMENT NEW

41360DATE REG. NO.

I HEREBY CERTIFY THAT THIS PLAN,

SPECIFICATION OR REPORT WAS PREPARED BY ME

OR UNDER MY DIRECT SUPERVISION AND THAT I

AM A DULY…