Am_0002-Drawings.pdf

US Army Corps of Engineers ®

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MECHANICAL GENERAL NOTES

ORDER OF WORK NOTES

WORK PERFORMED AS PART OF THIS PROJECT MUST BE DONE IN A MANNER THAT WILL

ALLOW THE CHILLED WATER SYSTEM TO REMAIN FULLY FUNCTIONAL THROUGHOUT THE

ENTIRE CONSTRUCTION PERIOD. WHERE INDICATED ON THE PLAN SHEETS, EXISTING

STRAINERS, AUTOMATIC CONTROL VALVES AND ISOLATION VALVES MAY BE USED FOR

TEMPORARY COOLING EQUIPMENT. NO AIR HANDLING UNITS, CRAC UNITS, FAN COIL

UNITS OR OTHER SPACE COOLING EQUIPMENT WILL BE ALLOWED TO BE OUT OF

SERVICE WITHOUT APPROVAL, IN WRITING, FROM THE CONTRACTING OFFICER’S

REPRESENTATIVE. IN NUMEROUS AREAS OF THE COMPLEX THIS WILL REQUIRE

INTERMIXED DEMOLITION AND NEW CONSTRUCTION.

DUE TO THE AMOUNT OF PIPING, CONDUIT, EQUIPMENT, ETC LOCATED WITHIN THE

AREAS WHERE WORK WILL BE PERFORMED, IT IS NOT POSSIBLE TO SHOW ALL EXISTING

CONDITIONS. THE CONTRACTOR SHOULD ANTICIPATE THAT SOME ALTERATION OR

ADJUSTMENT TO THE ROUTING OF THE NEW CHILLED WATER SUPPLY AND RETURN

PIPING WILL BE REQUIRED. THIS SHALL BE DONE AT NO ADDITIONAL COST TO THE

GOVERNMENT. WHERE SIGNIFICANT ALTERATION OR ADJUSTMENT TO THE ROUTING OF

THE PIPING IS REQUIRED, THIS SHALL BE BROUGHT TO THE ATTENTION OF THE

CONTRACTING OFFICERS REPRESENTATIVE, IN WRITING, FOR RESOLUTION, BEFORE

PROCEEDING WITH THAT PORTION OF THE WORK.

WHERE TEMPORARY CHILLED WATER SUPPLY AND / OR RETURN LINES ARE REQUIRED,

THE CONTRACTOR SHALL CHOOSE THE MOST CONDUCIVE POINTS, IN THE EXISTING

SYSTEM, TO CONNECT THE TEMPORARY LINES TO AND SHALL CHOOSE THE ROUTING OF

THE LINES. TEMPORARY CHILLED WATER SUPPLY AND / OR RETURN LINES SHALL NOT

BE RUN THROUGH DOORWAYS, PREVENTING CLOSING OF DOORS, WITHOUT APPROVAL,

IN WRITING, FROM THE CONTRACTING OFFICER’S REPRESENTATIVE. TEMPORARY

PIPING MAY BE RUN ALONG THE ROOF OF THE COMPLEX BUILDINGS, BELOW THE

COMPLEX BUILDINGS, WITHIN THE EXISTING PIPE CHASES OR ALONG THE OUTSIDE OF

THE COMPLEX BUILDINGS. ALL TEMPORARY PIPING SHALL BE PROPERLY SUPPORTED /

RESTRAINED SUCH THAT A BLAST OR SEISMIC EVENT WILL NOT CAUSE DAMAGE TO THE

PIPING AND POTENTIALLY CAUSE LOSE OF CHILLED WATER TO SPACE COOLING

EQUIPMENT.

WHERE TEMPORARY PIPING IS INSTALLED THROUGH A BUILDING WALL OR FLOOR, THE

PIPING SHALL BE REMOVED WHEN NO LONGER REQUIRED AND THE PENETRATION SHALL

BE REPAIRED AND RETURNED TO THE ORIGINAL CONDITION.

ALL PENETRATIONS THROUGH A BUILDING WALL OR ROOF SHALL COMPLY WITH DETAILS

FOR TYPICAL PIPE PENETRATIONS. THIS SHALL INCLUDE TEMPORARY PIPING.

WHERE “HOT-TAPPING” OF EXISTING PIPING IS REQUIRED, A 3-INCH LONG PIPE NIPPLE

WITH CAP SHALL BE PROVIDED AT THE TAPPING VALVE AFTER USE OF THE VALVE IS

COMPLETE. THE PIPING AND VALVE SHALL BE INSULATED. THE CAP SHALL BE LEFT

UNINSULATED.

SHOULD THE REQUIRED “FUTURE” BRANCH LINE CONNECTION POINTS IN THE NEW

CHILLED WATER SUPPLY AND RETURN MAIN PIPING ON THE COMPLEX ROOF BE IN

ADEQUATE TO ACCOMMODATE FLUSHING REQUIREMENTS, THE CONTRACTOR SHALL

ADD ADDITIONAL CONNECTION POINTS TO ACCOMMODATE THE PIPE FLUSHING

REQUIREMENTS.

THE NEW CHILLED WATER SUPPLY AND RETURN PIPING LOOPS ON THE ROOFS OF THE

COMPLEX BUILDING WILL INCLUDE NUMEROUS CONNECTION POINTS FOR FUTURE

PIPING. THESE POINTS MAY BE USED BY THE CONTRACTOR AS CONNECTION POINTS

FOR TEMPORARY CHILLED WATER SUPPLY AND RETURN PIPING DURING CONSTRUCTION

OF THE CHILLED WATER SUPPLY AND RETURN RISER PIPING.

WHERE NEW CONTROL VALVES ARE REQUIRED, THEY SHALL MATCH THE EXISTING

UNLESS OTHERWISE INDICATED AND SHALL UTILIZE THE EXISTING CONTROL SYSTEM

OUTPUT.

WHERE NEW TEMPERATURE SENSORS ARE REQUIRED, THEY SHALL MATCH THE

EXISTING UNLESS OTHERWISE INDICATED AND SHALL UTILIZE THE EXISTING CONTROL

SYSTEM INPUT.

BUTTERFLY VALVES SHALL BE INSTALLED WITH A WELD NECK FLANGE ON EACH SIDE OF

THE VALVE.BUTTERFLY VALVES SHALL BE INSTALLED WITH A WELD NECK FLANGE ON

EACH SIDE OF THE VALVE.

WHERE PIPE ELEVATION DIMENSIONS ARE PROVIDED ON THE DRAWINGS THEY ARE TO

THE PIPE CENTERLINE, UNLESS INDICATED OTHERWISE.

THE EXISTING PIPE SUPPORTS ON THE ROOF OF THE COMPLEX BUILDINGS MAY BE USED

TO TEMPORARILY SUPPORT THE NEW PIPING DURING INSTALLATION BUT SHALL NOT BE

USED TO PERMANENTLY SUPPORT THE NEW PIPING. ALL NEW PIPING INSTALLED ON

THE ROOF OF THE COMPLEX BUILDINGS SHALL BE SUPPORTED WITH NEW PIPING

SUPPORTS AS INDICATED ON THE DRAWINGS.

WHERE TEMPORARY COOLING EQUIPMENT IS PROVIDED, A STRAINER SHALL BE

PROVIDED IN THE CHILLED WATER SUPPLY LINE AND AN AUTOMATIC CONTROL VALVE

SHALL BE PROVIDED IN THE CHILLED WATER RETURN LINE. THE CONTROL VALVE SHALL

BE OPERATED BY THE EXISTING HVAC CONTROL SYSTEM TO MAINTAIN THE

TEMPERATURE IN THE SPACE BEING SERVED AND TO ALLOW MONITORING OF THE

OPERATION AT THE CCC. TEMPORARY COOLING EQUIPMENT SHALL BE OPERATED FOR

A MINIMUM OF 48 HOURS BEFORE THE PERMANENT EQUIPMENT IS TAKEN OUT OF

SERVICE TO VERIFY PROPER OPERATION OF THE TEMPORARY EQUIPMENT AND TO

VALIDATE ITS ABILITY TO MEET THE COOLING REQUIREMENTS.

WHERE WORK IS REQUIRED IN ROOMS WITH COMPUTER ROOM AIR CONDITIONING

(CRAC) UNITS, ACCESS TO THE ROOMS WILL REQUIRE COORDINATION WITH THE ROOM

OCCUPANTS. THE CONTRACTOR SHALL REQUEST ACCESS TO THESE ROOMS, IN

WRITING, A MINIMUM OF 14 DAYS IN ADVANCE OF THE REQUIRED ACCESS. REQUESTS

FOR ACCESS SHALL BE SUBMITTED TO THE USACE CONTRACTING OFFICERS

REPRESENTATIVE.

PIPING PENETRATIONS THROUGH CHASE WALLS SHALL BE FIRESTOPPED.

UNLESS INDICATED OTHERWISE, THE NEW PIPE SUPPORTS SHALL BE USED TO SUPPORT

NEW PIPING ONLY, NOT EXISTING PIPING OR OTHER UTILITIES.

1.

2.

3.

4.

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7.

8.

9.

10.

11.

12.

13.

14.

15.

IN ORDER TO ACCOMPLISH THE REQUIRED WORK WHILE KEEPING THE CHILLED

WATER SYSTEM SERVING THE COMPLEX FULLY FUNCTIONAL, CLOSE

COORDINATION WILL BE REQUIRED REGARDING THE ORDER OF THE WORK. THE

FOLLOWING IS A GENERAL DESCRIPTION OF THE ORDER OF WORK AND IS

PROVIDED AS GENERAL GUIDANCE ONLY. NOT ALL STEPS ARE DESCRIBED.

REVISIONS TO THIS ORDER OF WORK MAY BE ALLOWED PROVIDED THAT THEY DO

NOT COMPROMISE THE ABILITY OF THE CHILLED WATER SYSTEM, INCLUDING

CONNECTED SPACE COOLING EQUIPMENT, TO REMAIN FULLY OPERATIONAL

DURING THE ENTIRE CONSTRUCTION PERIOD:

THE NEW CHILLED WATER SUPPLY AND RETURN PIPING SYSTEM ON THE

ROOF OF THE COMPLEX BUILDINGS, INCLUDING PIPE SUPPORTS, VALVES,

INSULATION, DRAINS AND VENTS, SHALL BE FULLY CONSTRUCTED AND

PRESSURE TESTED. THIS SHALL INCLUDE PIPE INSULATION, ISOLATION

VALVES FOR EACH NEW RISER PIPE AND CONNECTION OF THE NEW CHILLED

WATER SUPPLY AND RETURN PIPING TO THE EXISTING CHILLED WATER

SUPPLY AND RETURN PIPING AT THE CHILLED PLANT. THIS SHALL NOT

INCLUDE CONSTRUCTION OF THE NEW CHILLED WATER SUPPLY AND RETURN

RISER PIPING. (THE EXISTING CHILLED WATER SUPPLY AND RETURN PIPING

SHALL REMAIN UNALTERED WHILE THIS NEW PIPING IS BEING

CONSTRUCTED.)

THE FOLLOWING ARE THE TYPICAL STEPS REQUIRED FOR CONSTRUCTION OF

EACH SET OF NEW CHILLED WATER SUPPLY AND RETURN RISER PIPING:

TEMPORARY CHILLED WATER SUPPLY AND RETURN LINES OF THE

QUANTITY AND SIZE SHALL BE CONNECTED TO EACH PIECE OF SPACE

COOLING EQUIPMENT AS INDICATED ON THE MECHANICAL ROOM PLANS

ALLOWING THE EQUIPMENT TO BE PROVIDED WITH CHILLED WATER AFTER

THE EXISTING ISOLATION VALVES AT THE TOP OF THE RISER PIPING HAVE

BEEN CLOSED. THE TEMPORARY CHILLED WATER RETURN LINE(S) SHALL

INCLUDE ONE OR MORE TEMPORARY CHILLED WATER CONTROL VALVES

TO CONTROL THE CHILLED WATER FLOW. THE CONTROL VALVE SHALL BE

OPERATED FROM THE EXISTING HVAC CONTROL PANEL FOR THE PIECE OF

EQUIPMENT IT IS SERVING AND SHALL CONTROL THE WATER FLOW USING

THE SAME CONTROL SCHEME AS WAS IN PLACE PRIOR TO THE START OF

WORK.

IN EACH MECHANICAL EQUIPMENT ROOM, THE EXISTING ISOLATION

VALVES IN THE CHILLED WATER BRANCH LINES (TYPICALLY LOCATED

NEAR THE POINT OF CONNECTION OF THE BRANCH LINES TO THE RISER

PIPING) SHALL BE CLOSED. THE SPACE COOLING EQUIPMENT WILL THEN

BE SUPPLIED WITH CHILLED WATER ONLY BY THE TEMPORARY CHILLED

WATER SUPPLY AND RETURN LINES.

1.

2.

WITH ALL SPACE COOLING EQUIPMENT ASSOCIATED WITH A GIVEN

SET OF CHILLED WATER SUPPLY AND RETURN RISER PIPES BEING

PROVIDED WITH CHILLED WATER VIA TEMPORARY PIPING ONLY, THE

SPACE COOLING EQUIPMENT SHALL BE OPERATED FOR A MINIMUM

OF 48 HOURS TO DEMONSTRATE THAT THE EQUIPMENT WILL

OPERATE PROPERLY WITH THE TEMPORARY CHILLED WATER LINES

AND THE TEMPORARY CHILLED WATER CONTROL VALVE

ARRANGEMENTS.

WHEN ALL SPACE COOLING EQUIPMENT ASSOCIATED WITH A GIVEN

SET OF CHILLED WATER SUPPLY AND RETURN RISER PIPES HAS

DEMONSTRATED PROPER OPERATION FOR A MINIMUM OF 48 HOURS,

THE EXISTING ISOLATION VALVES AT THE TOP OF THE RISER PIPES

SHALL BE CLOSED AND THE RISER PIPING SHALL BE REMOVED.

BRANCH PIPING TO EACH MECHANICAL EQUIPMENT ROOM SHALL BE

REMOVED UP TO THE EXISTING BRANCH LINE ISOLATION VALVES.

THE ISOLATION VALVES SHALL REMAIN.

NEW CHILLED WATER RISER PIPING SHALL BE CONSTRUCTED AS

INDICATED ON THE MECHANICAL EQUIPMENT ROOM PLANS. THE

NEW PIPING SHALL TYPICALLY BE ROUTED WHERE THE OLD RISER

PIPING WAS REMOVED, IN ORDER TO MINIMIZE CONFLICTS. AT EACH

MECHANICAL ROOM, CHILLED WATER SUPPLY AND RETURN BRANCH

PIPING SHALL EXTEND FROM THE NEW RISER PIPING INTO THE

MECHANICAL EQUIPMENT ROOM AND SHALL BE CONNECTED TO THE

EXISTING CHILLED WATER SUPPLY AND RETURN BRANCH PIPING, AS

SHOWN ON THE MECHANICAL EQUIPMENT ROOM PLANS. THIS SHALL

INCLUDE NEW ISOLATION VALVES, WHERE / AS SHOWN ON THE

MECHANICAL EQUIPMENT ROOM PLANS. THE NEW CHILLED WATER

SUPPLY AND RETURN RISER PIPING SHALL BE CONNECTED TO THE

NEW CHILLED WATER SUPPLY AND RETURN MAIN PIPING ON THE

COMPLEX ROOF AS SHOWN ON THE ROOF NEW PIPING PLAN

DRAWINGS. (THE ISOLATION VALVES IN THE NEW PIPING RISERS

SHALL REMAIN CLOSED.)

THE NEW CHILLED WATER RISER PIPING AND NEW PIPING IN THE

MECHANICAL EQUIPMENT ROOMS SHALL BE FILLED, PRESSURE

TESTED AND FLUSHED.

THE ISOLATION VALVES IN THE NEW RISER PIPING SHALL BE

OPENED, ALLOWING THE ASSOCIATED MECHANICAL EQUIPMENT TO

BE PROVIDED WITH CHILLED WATER FROM THE NEW SYSTEM.

VALVES IN THE TEMPORARY CHILLED WATER SUPPLY AND RETURN

PIPING SERVING THE ASSOCIATED MECHANICAL EQUIPMENT SHALL

BE CLOSED. THE OPERATION OF THE COOLING EQUIPMENT SHALL

BE MONITORED FOR A MINIMUM OF 48 HOURS TO VERIFY PROPER

OPERATION.

TEMPORARY COOLING EQUIPMENT AND TEMPORARY CHILLED

WATER SUPPLY AND RETURN LINES SHALL BE REMOVED.

ANY BUILDING PENETRATIONS MADE TO ALLOW THE INSTALLATION

OF TEMPORARY CHILLED WATER LINES SHALL BE REPAIRED.

A.

B.

C.

D.

ORDER OF WORK NOTES (CONT.)

3.

4.

16.

17.

E.

F.

G.

AFTER ALL NEW RISER PIPING AND MECHANICAL EQUIPMENT ROOM PIPING HAS

BEEN CONSTRUCTED, TESTED, PLACED INTO OPERATION, VERIFIED AS

FUNCTIONING PROPERLY AND ACCEPTED BY THE GOVERNMENT, THE EXISTING

CHILLED WATER SUPPLY AND RETURN PIPING OF THE ROOF OF THE COMPLEX

AND FROM THE CHILLER PLANT TO THE ROOF OF THE COMPLEX, SHALL BE

REMOVED AND SCRAPPED. CONTRACTOR MAY TEMPORARILY STORE DEMOLISHED

PIPING AND INSULATIONS NEAR THE BUILDING 1000 BUT SHALL PROMPTLY

DISPOSE OF THEM FROM THE SITE.

MAIN CHILLED WATER SUPPLY AND RETURN LOOPS ON THE ROOF OF BUILDINGS

8000, 9000 AND 11000 SHALL BE COMPLETED AS INDICATED ON THE DRAWINGS.

H.

I.

THE EXISTING JIB CRANE LOCATED ON THE ROOF OF BUILDING 1000 SHALL BE

AVAILABLE FOR USE BY THE CONTRACTOR FOR WORK REQUIRED BY THIS PROJECT.

THE CONTRACTOR SHALL INSURE THAT WHILE USING THE CRANE THE LOAD RATING FOR

THE CRANE IS NOT EXCEEDED. CONTRACTOR PERSONNEL SHALL BE TRAINED BY

CMAFS PERSONNEL IN THE USE OF THE CRANE, PRIOR TO USING THE CRANE. THE

CONTRACTOR SHALL BE RESPONSIBLE FOR REPAIR OF ANY BUILDING DAMAGE CAUSED

BY CONTRACTOR PERSONNEL WHILE USING THE CRANE.

POINT-OF-USE WELDING EXHAUST SHALL BE UTILIZED FOR ALL WELDING PERFORMED

INSIDE THE CHEYENNE MOUNTAIN AFS COMPLEX. THE EXHAUST SYSTEM SHALL

ADEQUATELY CAPTURE ALL SMOKE GENERATED BY WELDING PROCEDURES AND

CONVEY IT OUTSIDE THE COMPLEX OR SHALL FILTER THE EXHAUST AND DISCHARGE IT

BACK INTO THE VICINITY OF THE WORK AREA. THE COMPLEX EXHAUST SYSTEM SHALL

NOT BE UTILIZED IN ANY WAY FOR REMOVAL OF WELDING SMOKE.

WELDING SHALL BE IN ACCORDANCE WITH NFPA 51B. WHERE ITEMS ARE WELDED TO

THE ROOF OF ANY BUILDING, THE AREA WHERE THE WORK IS PERFORMED AND THE

AREA DIRECTLY BELOW WHERE THE WORK IS PERFORMED SHALL BE INSPECTED

DURING AND FOR ONE HOUR AFTER COMPLETION OF THE WORK TO INSURE THAT NO

IGNITION OF BUILDING MATERIALS OR CONTENT HAS OCCURRED.

PRIOR TO INSTALLING ANY PIPING OR PIPING SUPPORT IN AREAS BETWEEN BUILDINGS

CONTACTOR SHALL ENSURE THAT THERE IS AT LEAST 24 INCH OF FREE RATTLE SPACE

FOR BUILDING MOVEMENT, IN AREAS BETWEEN BUILDINGS AND ROCK FACES THERE

SHALL BE 12 INCH OF FREE RATTLE SPACE." AND/ OR ALL PIPING THAT IS AFFIXED TO

THE OUTSIDE OF THE BUILDINGS SHALL BE AT LEAST 12 INCH FROM ANY ROCK WALL

AND 24 INCH IF RUNNING BETWEEN BUILDINGS FOR ANY REASON.

SURFACES TO BE PAINTED SHALL BE PAINTED WITH A 23-A-Z THREE PART COATING

SYSTEM WITH ONE COAT PRIMER, INTERMEDIATE TOP COATS OF PAINT. THE PRIMER

SHALL COMPLY WITH THE REQUIREMENTS OF SSPC-40; THE INTERMEDIATE COAT SHALL

COMPLY WITH THE REQUIREMENTS OF SSPC-41; THE TOP COAT SHALL COMPLY WITH

THE REQUIREMENTS OF SSPC-38. SURFACE TO BE PAINTED SHALL BE DRY AND

CLEANED IN ACCORDANCE WITH THE PAINT MANUFACTURERS REQUIREMENTS.

APPLICATION SHALL BE BY SPRAY IN ACCORDANCE WITH THE MANUFACTURER'S

WRITTEN INSTRUCTIONS. LIMITED USE OF BRUSH AND ROLLER APPLICATION IS

PERMITTED PROVIDED THE SPECIFIED FILM THICKNESSES ARE ACHIEVED. THE

CONTRACTOR SHALL PROVIDE VENTILATION IN THE AREA OF PAINTING, IN ACCORDANCE

WITH THE MANUFACTURERS REQUIREMENTS.

THE CONTRACTOR SHALL OBTAIN ELECTRICAL POWER FOR WELDING AND GENERAL

POWER PURPOSES FROM ELECTRICAL PANELS IN THE THIRD FLOOR MECHANICAL

EQUIPMENT ROOMS. THE CONTRACTOR SHALL PROVIDE ALL REQUIRED TEMPORARY

CIRCUIT BREAKERS, DISCONNECTS, WIRING, DISTRIBUTION PANELS, ETC. WIRING

BETWEEN THE THIRD FLOOR MECHANICAL EQUIPMENT ROOMS AND THE ROOF SHALL BE

ROUTED IN THE PIPE CHASES AND SHALL NOT BE ROUTED THROUGH HALLWAYS /

CORRIDORS. PENETRATIONS THROUGH A BUILDING ROOF SHALL BE PROVIDED WITH

EMP PROTECTION AS INDICATED ON THE DRAWINGS. AFTER COMPLETION OF WORK

REQUIRING TEMPORARY POWER, THE TEMPORARY WIRING AND EQUIPMENT SHALL BE

REMOVED BY THE CONTRACTOR AND THE ROOF SHALL BE RETURNED TO ITS ORIGINAL

CONDITION. THE CONTRACTOR SHALL FIELD VERIFY POWER AVAILABILITY IN THE

MECHANICAL EQUIPMENT ROOMS. ALL WORK SHALL BE DONE IAW NATIONAL

ELECTRICAL CODE AND ALL APPLICABLE OSHA REQUIREMENTS. ALL CONNECTIONS TO /

REVISIONS TO THE CURRENT ELECTRICAL SYSTEMS SHALL BE COORDINATED WITH THE

CMAFS ELECTRICAL SHOP.

19.

MECHANICAL GENERAL NOTES(CONT.)

18.

20.

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23.

M-301

8" CWS (EX.)

8" CWR (EX.)

8" CWS FROM

POWERPLANT

DISTRIBUTION PUMPS

INSIDE OF CHILLER BAY

8" CWR TO 10" MAIN RETURN

HEADER INSIDE CHILLER BAY

CHILLER BAY

1 2

8" CWS/CWR TO 10" MAIN

HEADER INSIDE CHILLER BAY

3" CWS/CWR (EX.) TO AHU ON

CHILLER BAY ROOF

8" CWS (EX.)

8" CWR (EX.)

8" CWS (EX.)8" CWR (EX.)8" CWR

EXISTING

FLEXIBLE

CONNECTOR

8" CWR (EX.)

8" CWS (EX.)

8" CWS

NEW INSERTION

TYPE ISOLATION

VALVES TO BE

INSTALLED PRIOR TO

DEMOLITION OF

REMAINING SET OF

CWS/CWR PIPING

US Army Corps of Engineers ®

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1/4" = 1'-0"M-201

1 CHILLED WATER LINE NEW PIPING PLAN (1 OF 3) - AREA 1

MECHANICAL GENERAL NOTES

ONE SET OF EXISTING CHILLED WATER SUPPLY/RETURN PIPING

(INCLUDING INSULATION, PIPING SUPPORTS, VALVES, OR OTHER ITEMS)

SERVING THE ELECTRICAL BAY & GENERATOR BAY SHALL NOT BE

REMOVED UNTIL NEW CHILLED WATER SUPPLY/RETURN PIPING AND NEW

BRANCH PIPING CONNECTIONS TO ALL ASSOCIATED AIR HANDLING UNITS

ARE COMPLETED, TESTED, AND ACCEPTED BY THE GOVERNMENT. THIS

APPLIES TO CHILLED WATER PIPING FED BY THE POWERPLANT

DISTRIBUTION PUMPS IN THE CHILLER BAY.

EXISTING CHILLED WATER CONTROL VALVE, BALANCING VALVE,

STRAINER, PRESSURE GAGES, THERMOMETERS AND OTHER ANCILLARY

DEVICES IN THE VICINITY OF EACH AIR HANDLING UNIT ON THE ROOF OF

THE GENERATOR BAY, SERVER ROOM ON THE FIRST FLOOR OF THE

GENERATOR BAY, AND SECOND FLOOR OF THE ELECTRICAL BAY SHALL

REMAIN AND BE REUSED, UNLESS SPECIFICALLY INDICATED OTHERWISE.

CONTRACTOR SHALL BE RESPONSIBLE FOR THE PROTECTION OF ALL

EXISTING BUILDINGS, OTHER EQUIPMENT, AND COMPONENTS THAT ARE

TO REMAIN INTACT WHILE PERFORMING THE SPECIFIED WORK.

CONTRACTOR SHALL IMMEDIATELY NOTIFY CONTRACTING OFFICERS

REPRESENTATIVE (COR) OF ANY DAMAGES THAT MAY HAVE OCCURRED

AND PERFORM REPAIR AND / OR REPLACEMENT WORK AT NO

ADDITIONAL COST TO THE GOVERNMENT.

1.

2.

3.

MECHANICAL KEYNOTES

1 INSTALL NEW 8" INSERTION TYPE GATE VALVES IN THE EXISTING 8"

CWS/CWR PIPING.

INSTALL TWO (2) 6" VALVED AND THREADED HOT TAPS IN THE EXISTING

8" CWS/CWR PIPING INSIDE OF CHILLER BAY FOR TEMPORARY HOSE

CONNECTIONS.

PROVIDE 8" VALVED TAPS ON THE SIDE OF NEW 8" CWS/CWR PIPING TO

BE USED FOR TEMPORARY HOSE CONNECTIONS. CONNECT

TEMPORARY CHILLED WATER CWS/CWR HOSES TO THESE TAPS. SEE

SECTION-1 ON SHEET M-301 FOR NEW 8" VALVED TAPS TO BE USED FOR

PERMANENT CWS/R PIPING CONNECTIONS.

INSTALL NEW 8" CWS LINE AT APPROXIMATELY 3'-8 1/2" A.F.F AND NEW

8" CWR LINE AT APPROXIMATELY 5' A.F.F. SUPPORT NEW PIPING FROM

THE EXISTING PIPE SUPPORTS.

PLAN NORTH

SCALE:

0 4' 8'

1/4" = 1' - 0"

4' 8'

5 4 3

KEYPLAN

UP

M-201

2 ISOMETRIC VIEW - AREA 1

NEW 8" ISOLATION

VALVES TO BE

CONNECTED TO

FLEX CONNECTORS

AND PERMANENT

PIPING PER SHEET

M-211.

TAPS FOR

PERMANENT

PIPING

CONNECTIONS

TAPS FOR

TEMPORARY

HOSE

CONNECTIONS

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MD301

M-301

8" C

W S

(E X.

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D W

AT

ER

S

YS

TE

M

, 1

0 5

PN

SA

X C

(F

Y1 7)

O M

A H A

D

IS

T R

IC

T O

M

AH

A, N

E 6 8

K.

P

AR

K

K.

P

AR

K

M

IC

H

AE

L T.

S M

IT

H

M . S

M

IT

H

JU

N

E

W

F1

8R

1/4" = 1'-0"M-202

1 CHILLED WATER LINE NEW PIPING PLAN (1 OF 3) - AREA 2

MECHANICAL KEYNOTES

1 INSTALL NEW 8" CWS/CWR PIPING BELOW REMAINING SET OF

EXISTING CWS/CWR PIPING AS SHOWN. SEE SECTION 2 ON SHEET

M-301.

PLAN NORTH

SCALE:

0 4' 8'

1/4" = 1' - 0"

4' 8'

5 4 3

KEYPLAN

UP

INSTALL NEW 8" CWS/CWR PIPING

BELOW THE EXISTING REMAINING SET OF CWS/CWR

PIPING ON THE EXISTING PIPE SUPPORTS.

MECHANICAL GENERAL NOTES

ONE SET OF EXISTING CHILLED WATER SUPPLY/RETURN PIPING

(INCLUDING INSULATION, PIPING SUPPORTS, VALVES, OR OTHER ITEMS)

SERVING THE ELECTRICAL BAY & GENERATOR BAY SHALL NOT BE

REMOVED UNTIL NEW CHILLED WATER SUPPLY/RETURN PIPING AND NEW

BRANCH PIPING CONNECTIONS TO ALL ASSOCIATED AIR HANDLING UNITS

ARE COMPLETED, TESTED, AND ACCEPTED BY THE GOVERNMENT. THIS

APPLIES TO CHILLED WATER PIPING FED BY THE POWERPLANT

DISTRIBUTION PUMPS IN THE CHILLER BAY.

EXISTING CHILLED WATER CONTROL VALVE, BALANCING VALVE,

STRAINER, PRESSURE GAGES, THERMOMETERS AND OTHER ANCILLARY

DEVICES IN THE VICINITY OF EACH AIR HANDLING UNIT ON THE ROOF OF

THE GENERATOR BAY, SERVER ROOM ON THE FIRST FLOOR OF THE

GENERATOR BAY, AND SECOND FLOOR OF THE ELECTRICAL BAY SHALL

REMAIN AND BE REUSED, UNLESS SPECIFICALLY INDICATED OTHERWISE.

CONTRACTOR SHALL BE RESPONSIBLE FOR THE PROTECTION OF ALL

EXISTING BUILDINGS, OTHER EQUIPMENT, AND COMPONENTS THAT ARE

TO REMAIN INTACT WHILE PERFORMING THE SPECIFIED WORK.

CONTRACTOR SHALL IMMEDIATELY NOTIFY CONTRACTING OFFICERS

REPRESENTATIVE (COR) OF ANY DAMAGES THAT MAY HAVE OCCURRED

AND PERFORM REPAIR AND / OR REPLACEMENT WORK AT NO

ADDITIONAL COST TO THE GOVERNMENT.

1.

2.

3.

M

AR

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C

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N D

AT

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AM

- G

EN

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A L R

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IS

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LY

MD303

MD303

ELECTRICAL BAY

CAT WALK

HAND RAIL

8" CWR (EX.)8" CWR (EX.)

8" C

W S

(E X.

8" C

W R

(E X.

8" CWS (EX.)

8" CWR (EX.)

8" CWR (EX.)

8" CWS (EX.)

8" C

W S

(E X.

8" C

W R

(E X.

4" CWS (EX.)

4" CWR (EX.)

8" C

W R

8" C

W S

8" CWS8" CWR

8" CWR8" CWS

NEW 8" CWS PIPING TO BE INSTALLED

BELOW NEW 8" CWR PIPING. NEW PIPE SUPPORTS

ATTACHED TO CAT WALK STRUCTURE. REFER TO

DETAIL 6 ON SHEET MSD02 FOR PIPE SUPPORTS.

UTILIZE EXISTING OPENING

AFTER DEMOLITION OF EXISTING PIPING

M-302

M-302

M-302

M-302

4" VALVED TAPS TO BE USED FOR

TEMPORARY HOSE CONNECTIONS

SERVING AHU ON SECOND FLOOR

OF ELECTRICAL BAY.

4" VALVED TAPS TO BE USED

FOR PERMANENT PIPING

CONNECTIONS SERVING AHU

ON SECOND FLOOR OF

ELECTRICAL BAY.

8" CWR

3 ADJUST PIPING CONFIGURATION

IF NECESSARY TO SUPPORT NEW

PIPES BY EXISTING PIPE

HANGERS

ADJUST PIPING ELEVATION IF

NECESSARY TO SUPPORT NEW

PIPES BY EXISTING PIPE HANGERS

REFER TO DETAIL 2 ON SHEET

MSD02 FOR THE VERTICAL PIPE

SUPPORTS.

US Army Corps of Engineers ®

SHEET ID

U S

AR

M

Y C

O R

PS

O

F

EN

G

IN

EE

R

S

D R

AW

N

B Y:

D

ES

IG

N

ED

B

Y:

SU

BM

IT

TE

D B

Y:

SI

ZE

C H

EC

KE

D B

Y:

AN

SI

'D

FI

LE

N

AM

E:

IS

SU

E D

AT

E:

C O

N

TR

AC

T

N O

SO

LI

C

IT

AT

IO

N N

O

FI

LE

N U

M

BE

R

1 2 3 4 5

D

C

B

A

M-203

C H

IL

LE

D W

A T

ER

L

IN

E N

EW

P

IP

IN

G P

LA

N

(1 O

F 3)

A R

EA

C H

EY

EN

N E

M O

U N

TA

IN

A

FB

, C O

LO

R

AD

O

R

EP

AI

R

C H

IL

LE

D W

AT

ER

S

YS

TE

M

, 1

0 5

PN

SA

X C

(F

Y1 7)

O M

A H A

D

IS

T R

IC

T O

M

AH

A, N

E 6 8

K.

P

AR

K

K.

P

AR

K

M

IC

H

AE

L T.

S M

IT

H

M . S

M

IT

H

JU

N

E

W

F1

8R

1/4" = 1'-0"M-203

1 CHILLED WATER LINE NEW PIPING PLAN (1 OF 3) - AREA 3

MECHANICAL KEYNOTES

1 INSTALL NEW 8" CWS/CWR PIPING AS SHOWN. SEE SECTION VIEWS

ON SHEET M-302 & ISOMETRIC VIEW ON SHEET M-901.

CAPPED EXISTING ISOLATION VALVES PER SHEET MD-203 AND

MD-302.

CONNECT TEMPORARY CWS/CWR HOSES FROM NEW 8" CWS/CWR

PIPING TO VALVED AND THREADED TAPS INSTALLED ABOVE

ISOLATION VALVES ON EXISTING 4" CWS/CWR PIPING SERVING

ELECTRICAL BAY SECOND FLOOR AHU. REFER TO SHEET M-302 AND

M-901 FOR CLARIFICATION OF REQUIRED WORK. PIPE PENETRATION

THROUGH THE BUILDING WALL SHALL BE SEALED IN ACCORDANCE

WITH DETAIL 1 ON SHEET M-501.

PLAN NORTH

SCALE:

0 4' 8'

1/4" = 1' - 0"

4' 8'

5 4 3

KEYPLAN

UP

MECHANICAL GENERAL NOTES

ONE SET OF EXISTING CHILLED WATER SUPPLY/RETURN PIPING

(INCLUDING INSULATION, PIPING SUPPORTS, VALVES, OR OTHER ITEMS)

SERVING THE ELECTRICAL BAY & GENERATOR BAY SHALL NOT BE

REMOVED UNTIL NEW CHILLED WATER SUPPLY/RETURN PIPING AND NEW

BRANCH PIPING CONNECTIONS TO ALL ASSOCIATED AIR HANDLING UNITS

ARE COMPLETED, TESTED, AND ACCEPTED BY THE GOVERNMENT. THIS

APPLIES TO CHILLED WATER PIPING FED BY THE POWERPLANT

DISTRIBUTION PUMPS IN THE CHILLER BAY.

EXISTING CHILLED WATER CONTROL VALVE, BALANCING VALVE,

STRAINER, PRESSURE GAGES, THERMOMETERS AND OTHER ANCILLARY

DEVICES IN THE VICINITY OF EACH AIR HANDLING UNIT ON THE ROOF OF

THE GENERATOR BAY, SERVER ROOM ON THE FIRST FLOOR OF THE

GENERATOR BAY, AND SECOND FLOOR OF THE ELECTRICAL BAY SHALL

REMAIN AND BE REUSED, UNLESS SPECIFICALLY INDICATED OTHERWISE.

CONTRACTOR SHALL BE RESPONSIBLE FOR THE PROTECTION OF ALL

EXISTING BUILDINGS, OTHER EQUIPMENT, AND COMPONENTS THAT ARE

TO REMAIN INTACT WHILE PERFORMING THE SPECIFIED WORK.

CONTRACTOR SHALL IMMEDIATELY NOTIFY CONTRACTING OFFICERS

REPRESENTATIVE (COR) OF ANY DAMAGES THAT MAY HAVE OCCURRED

AND PERFORM REPAIR AND / OR REPLACEMENT WORK AT NO

ADDITIONAL COST TO THE GOVERNMENT.

1.

2.

3.

M

AR

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C

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EN

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A L R

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M-303

M-304

AHU-6

8" CWR

8" CWS

8" CWR

8" CWR

8" C

W R

8" C

W S

8" C

W S

8" C

W R

8" C

W S

(E X.

8" C

W R

(E X.

8" CWR (EX.)

8" CWS (EX.)

8" CWR

8" C

W S

8" C

W R

4" CWS (EX.)

4" CWR (EX.)

M-304

FLEX CONNECTORS AND

90 DEGREE ELBOWS. FOR CLARITY,

SEE SECTION VIEW 1 ON SHEET M-303. REFER

TO DETAIL 2 ON SHEET MSD02 AND DETAIL 1

ON SHEET MSD03 FOR PIPE SUPPORTS.

GENERATOR BAY ROOF

MANWAY ACCESS LADDER

4" C

W S

(E X.

4"

C W

R (E

X.

CWS/CWR SERVING GENERATOR BAY

SERVER ROOM AHU ON FIRST FLOOR

SEE SECTION

VIEW 1 AND

KEYNOTE #3 ON

SHEET M-304

FOR GENERATOR

BAY SERVER

ROOM NEW

PIPING

CONNECTION.

8" CWS

REFER TO DETAIL 1 ON SHEET MSD01 FOR

THE PIPE SUPPORTS. PROVIDE STEEL

REINFORCED CONCRETE PIERS IF

NECESSARY TO MOUNT PIPE SUPPORT BASE

PLATES. REFER TO DETAIL 6 ON SHEET

MSD01 FOR THE PIPE SUPPORT.

REFER TO DETAIL 6 ON SHEET

MSD02 FOR THE PIPE SUPPORT.

US Army Corps of Engineers ®

SHEET ID

U S

AR

M

Y C

O R

PS

O

F

EN

G

IN

EE

R

S

D R

AW

N

B Y:

D

ES

IG

N

ED

B

Y:

SU

BM

IT

TE

D B

Y:

SI

ZE

C H

EC

KE

D B

Y:

AN

SI

'D

FI

LE

N

AM

E:

IS

SU

E D

AT

E:

C O

N

TR

AC

T

N O

SO

LI

C

IT

AT

IO

N N

O

FI

LE

N U

M

BE

R

1 2 3 4 5

D

C

B

A

M-204

C H

IL

LE

D W

A T

ER

L

IN

E N

EW

P

IP

IN

G P

LA

N

(1 O

F 3)

A R

EA

C H

EY

EN

N E

M O

U N

TA

IN

A

FB

, C O

LO

R

AD

O

R

EP

AI

R

C H

IL

LE

D W

AT

ER

S

YS

TE

M

, 1

0 5

PN

SA

X C

(F

Y1 7)

O M

A H A

D

IS

T R

IC

T O

M

AH

A, N

E 6 8

K.

P

AR

K

K.

P

AR

K

M

IC

H

AE

L T.

S M

IT

H

M . S

M

IT

H

JU

N

E

W

F1

8R

1/4" = 1'-0"M-204

1 CHILLED WATER LINE NEW PIPING PLAN (1 OF 3) - AREA 4

MECHANICAL KEYNOTES

CONTINUE INSTALLING NEW 8" CWS/CWR PIPING AS SHOWN. FOR

CLARITY OF NEW PIPING ARRANGEMENT, SEE SECTION VIEWS ON

SHEET M-303 & M-304.

CONSTRUCT NEW 8" CWS PIPING UP TO THE LOCATION NEW

ISOLATION VALVE SHOWN. REMAINING CWS PIPING SHALL BE

CONSTRUCTED AFTER DEMOLITION OF EXISTING 8" CWR PIPING.

CONTINUE INSTALLING NEW 8" CWR PIPING AS SHOWN. FOR CLARITY

OF NEW PIPING ARRANGEMENT, SEE SECTION VIEWS ON SHEET M-303

& M-304.

INSTALL TEMPORARY ISOLATION VALVE ON EXISTING 4" CWR BRANCH

PIPING CLOSEST TO TEE FITTING ON EXISTING 8" MAIN CWR PIPING.

SEE SECTION VIEW 2 AND PERTINENT KEYNOTES ON SHEET M-304

FOR REQUIRED STEPS OF WORK RELATED TO GENERATOR BAY AHU

NEW PIPING CONNECTIONS. THIS WORK IS TYPICAL FOR ALL SIX (6)

AIR HANDLING UNITS ON GENERATOR BAY ROOF. THIS PART OF

WORK SHALL BE SEQUENCED IN AN ORDER OF AHU-1 TO AHU-6.

SINCE AHU-6 IS NORMALLY IN OPERATION FOR GENERATOR BAY

COOLING AND VENTILATION PURPOSES, OTHER AHUS SHALL BE

OPERABLE AFTER NEW PIPING CONNECTIONS PRIOR TO START NEW

PIPING WORK ON AHU-6.

PLAN NORTH

SCALE:

0 4' 8'

1/4" = 1' - 0"

4' 8'

5 4 3

KEYPLAN

UP

MECHANICAL GENERAL NOTES

ONE SET OF EXISTING CHILLED WATER SUPPLY/RETURN PIPING

(INCLUDING INSULATION, PIPING SUPPORTS, VALVES, OR OTHER ITEMS)

SERVING THE ELECTRICAL BAY & GENERATOR BAY SHALL NOT BE

REMOVED UNTIL NEW CHILLED WATER SUPPLY/RETURN PIPING AND NEW

BRANCH PIPING CONNECTIONS TO ALL ASSOCIATED AIR HANDLING UNITS

ARE COMPLETED, TESTED, AND ACCEPTED BY THE GOVERNMENT. THIS

APPLIES TO CHILLED WATER PIPING FED BY THE POWERPLANT

DISTRIBUTION PUMPS IN THE CHILLER BAY.

EXISTING CHILLED WATER CONTROL VALVE, BALANCING VALVE,

STRAINER, PRESSURE GAGES, THERMOMETERS AND OTHER ANCILLARY

DEVICES IN THE VICINITY OF EACH AIR HANDLING UNIT ON THE ROOF OF

THE GENERATOR BAY, SERVER ROOM ON THE FIRST FLOOR OF THE

GENERATOR BAY, AND SECOND FLOOR OF THE ELECTRICAL BAY SHALL

REMAIN AND BE REUSED, UNLESS SPECIFICALLY INDICATED OTHERWISE.

CONTRACTOR SHALL BE RESPONSIBLE FOR THE PROTECTION OF ALL

EXISTING BUILDINGS, OTHER EQUIPMENT, AND COMPONENTS THAT ARE

TO REMAIN INTACT WHILE PERFORMING THE SPECIFIED WORK.

CONTRACTOR SHALL IMMEDIATELY NOTIFY CONTRACTING OFFICERS

REPRESENTATIVE (COR) OF ANY DAMAGES THAT MAY HAVE OCCURRED

AND PERFORM REPAIR AND / OR REPLACEMENT WORK AT NO

ADDITIONAL COST TO THE GOVERNMENT.

1.

2.

3.

M

AR

K D

ES

C

R

IP

TI

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N D

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E

AM

- G

EN

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A L R

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IS

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GENERATOR BAY ROOF

AHU-1 AHU-2 AHU-3 AHU-4 AHU-5

M-305

M-305

8" CWR 8" CWR 8" CWR

4" CWS (EX.) 4" CWR (EX.)

1 1 1 1

US Army Corps of Engineers ®

SHEET ID

U S

AR

M

Y C

O R

PS

O

F

EN

G

IN

EE

R

S

D R

AW

N

B Y:

D

ES

IG

N

ED

B

Y:

SU

BM

IT

TE

D B

Y:

SI

ZE

C H

EC

KE

D B

Y:

AN

SI

'D

FI

LE

N

AM

E:

IS

SU

E D

AT

E:

C O

N

TR

AC

T

N O

SO

LI

C

IT

AT

IO

N N

O

FI

LE

N U

M

BE

R

1 2 3 4 5

D

C

B

A

M-205

C H

IL

LE

D W

A T

ER

L

IN

E N

EW

P

IP

IN

G P

LA

N

(1 O

F 3)

A R

EA

C H

EY

EN

N E

M O

U N

TA

IN

A

FB

, C O

LO

R

AD

O

R

EP

AI

R

C H

IL

LE

D W

AT

ER

S

YS

TE

M

, 1

0 5

PN

SA

X C

(F

Y1 7)

O M

A H A

D

IS

T R

IC

T O

M

AH

A, N

E 6 8

K.

P

AR

K

K.

P

AR

K

M

IC

H

AE

L T.

S M

IT

H

M . S

M

IT

H

JU

N

E

W

F1

8R

1/4" = 1'-0"M-205

1 CHILLED WATER LINE NEW PIPING PLAN (1 OF 3) - AREA 5

MECHANICAL KEYNOTES

PLAN NORTH

SCALE:

0 4' 8'

1/4" = 1' - 0"

4' 8'

5 4 3

KEYPLAN

UP

FOR GENERATOR BAY ROOF AHU NEW PIPING CONNECTIONS, REFER

TO SECTION VIEW 2 AND KEYNOTE #3 ON SHEET M-304.

CONTINUE INSTALLING NEW 8" CWR PIPING AS SHOWN. FOR CLARITY

OF NEW PIPING ARRANGEMENT, SEE SECTION VIEWS ON SHEET

M-305.

MECHANICAL GENERAL NOTES

ONE SET OF EXISTING CHILLED WATER SUPPLY/RETURN PIPING

(INCLUDING INSULATION, PIPING SUPPORTS, VALVES, OR OTHER

ITEMS) SERVING THE ELECTRICAL BAY & GENERATOR BAY SHALL NOT

BE REMOVED UNTIL NEW CHILLED WATER SUPPLY/RETURN PIPING

AND NEW BRANCH PIPING CONNECTIONS TO ALL ASSOCIATED AIR

HANDLING UNITS ARE COMPLETED, TESTED, AND ACCEPTED BY THE

GOVERNMENT. THIS APPLIES TO CHILLED WATER PIPING FED BY THE

POWERPLANT DISTRIBUTION PUMPS IN THE CHILLER BAY.

EXISTING CHILLED WATER CONTROL VALVE, BALANCING VALVE,

STRAINER, PRESSURE GAGES, THERMOMETERS AND OTHER

ANCILLARY DEVICES IN THE VICINITY OF EACH AIR HANDLING UNIT ON

THE ROOF OF THE GENERATOR BAY, SERVER ROOM ON THE FIRST

FLOOR OF THE GENERATOR BAY, AND SECOND FLOOR OF THE

ELECTRICAL BAY SHALL REMAIN AND BE REUSED, UNLESS

SPECIFICALLY INDICATED OTHERWISE.

CONTRACTOR SHALL BE RESPONSIBLE FOR THE PROTECTION OF ALL

EXISTING BUILDINGS, OTHER EQUIPMENT, AND COMPONENTS THAT

ARE TO REMAIN INTACT WHILE PERFORMING THE SPECIFIED WORK.

CONTRACTOR SHALL IMMEDIATELY NOTIFY CONTRACTING OFFICERS

REPRESENTATIVE (COR) OF ANY DAMAGES THAT MAY HAVE

OCCURRED AND PERFORM REPAIR AND / OR REPLACEMENT WORK AT

NO ADDITIONAL COST TO GOVERNMENT.

FOR GENERATOR BAY ROOF AHU NEW PIPING CONNECTIONS, REFER

TO SECTION VIEW 2 AND KEYNOTE #1 & #2 ON SHEET M-304.

CONTINUE INSTALLING NEW 8" CWR PIPING AS SHOWN. FOR CLARITY

OF NEW PIPING ARRANGEMENT, SEE SECTION VIEWS ON SHEET

M-305.

1.

2.

3.

M

AR

K D

ES

C

R

IP

TI

O

N D

AT

E

AM

- G

EN

ER

A L R

EV

IS

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N

S

J U

LY

REFER TO DETAIL 6 ON SHEET

MSD02 FOR THE PIPE SUPPORTS.