25-29532-01A - Gaston College RCB - BID SET Drawings.pdf

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

GENERAL

Morris Berg Architects 1018 Jay St., Suite 130 Charlotte, NC 28208 P (704) 552-5800

MECHANICAL ENGINEER

DESIGN TEAM

GENERAL MECHANICAL ELECTRICAL

ELECTRICAL ENGINEER

AME Consulting Engineers 413 Dalton Avenue, Suite A Charlotte, NC 28206 P (704) 295-4263

ARCHITECT

Morris Berg Architects 1018 Jay St., Suite 130 Charlotte, NC 28208 P (704) 552-5800

ARCHITECTURAL

INDEX OF DRAWINGS

AME Consulting Engineers 413 Dalton Avenue, Suite A Charlotte, NC 28206 P (704) 295-4263

SCO #25-29532-01A

NOT FOR

CONSTRUCTION

COVER SHEET

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LANE, DALLAS, NC 28034

CS100

LA

ZH

11/07/2025

FINAL REVIEW SET

GASTON COLLEGE

GASTON COLLEGE ROBINSON CLASSROOM

BUILDING HEATING HOT WATER UPGRADES

250 LIBRARY LANE, DALLAS, NC 28034

AS100 ARCHITECTURAL SITE PLAN

A201 CLASSIFICATION OF WORK

CS100 COVER SHEET

LS100 APPENDIX B

LS200 LIFE SAFETY PLANS

VICINITY MAP

MECHANICAL – GENERAL NOTES AND LEGENDS

MECHANICAL HVAC – DEMOLITION PLAN

MECHANICAL PIPING – DEMOLITION PLAN

MECHANICAL HVAC – NEW CONSTRUCTION PLAN

MECHANICAL PIPING – NEW CONSTRUCTION PLAN

MECHANICAL – CONTROLS & SCHEDULES

MECHANICAL – DETAILS

MECHANICAL – PIPING DIAGRAMS

M0.1

M1.1

M1.2

M2.1

M3.1

M6.1

M7.1

M7.2

ELECTRICAL – GENERAL NOTES, LEGENDS, AND DETAILS

ELECTRICAL – DEMOLITION PLAN

ELECTRICAL – POWER PLAN

ELECTRICAL – RISER AND SCHEDULES

E0.1

E1.1

E2.1

E5.1

Rev. No. Date Description

BID

BID SET

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

SCO #25-29532-01A

NOT FOR

CONSTRUCTION

APPENDIX B

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LANE, DALLAS, NC 28034

LS100

MH

LA

11/07/2025

Rev. No. Date Description

LEGEND

CLASSROOM

995 SF

ROOM NUMBER

ROOM SQUARE

FOOTAGE

1 HOUR FIRE - RESISTANCE RATING

1-A

2 HOUR FIRE - RESISTANCE RATING

TRAVEL DISTANCE LINE & PATH ID -

SEE TABLE FOR DISTANCES

ACCESSIBLE ENTRANCE/EXITHC

ROOM NAME

LECTURE

HALL

COMPUTER

CLASSROOM

SMALL

CLASSROOM

SMALL

CLASSROOM

SMALL

CLASSROOM

STAIR #1

ELEV #1

CORRIDOR

COMM

STORAGE

133A

SPRINKLER

ROOM

ELEC

MECHANICAL

CHAIR/TABLE

STORAGE

126A

STAIR #2

OFFICE

OFFICE

DEPT

CHAIR

OFFICE

OFFICE

OFFICE

OFFICE

OFFICE

OFFICE

OFFICE

SMALL

CLASSROOM

SMALL

CLASSROOM

CORR

CHILD

DEVELOPMENT

CLASSROOM

ELEV #1

EQUIP

FAC TLT

FAC TLT

JANITOR

MEN

FACULTY

BREAK

ROOM

ELEV #2

EQUIP

ELEC

WOMEN

ELEV #2

STORAGE

126B

STORAGE

126C

STORAGE

102D STORAGE

102E

STORAGE

102E

STORAGE

102A

STORAGE

102B

CORR

A B C

D

C O

M M

O N

P A

T H

O F

T R

A V

E L

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

SCO #25-29532-01A

NOT FOR

CONSTRUCTION

LIFE SAFETY PLANS

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LANE, DALLAS, NC 28034

LS200

LA

ZH

11/07/2025

TRAVEL DISTANCE

PATH ID DISTANCE (FT)

A 98' - 4"

B 120' - 0"

C 106' - 3"

D 78' - 11"

P L A

N

O

R T

H

TRUE

NORTH

1/8" = 1'-0"1

FIRST FLOOR - LIFE SAFETY

NO CHANGES TO

OCCUPANCY OR EGRESS

U S

R O

U T

E

S O

U T

H

U S

R O

U T

E

N O

R T

H

ROBINSON CLASSROOM

BUILDLING

AREA OF WORK

T O

W E

R B

O U

L E

V A

R D

R H

O D

E S

P E

R

IM

E T

E R

D R

IV

E

LI

B

R A

R Y

L A

N E

R H

O D

E S

P E

R

IM

E T

E R

D R

IV

E

K

K

M J

J

A

B

O

N

F

T

V

H

I

I

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

SCO #25-29532-01A

NOT FOR

CONSTRUCTION

ARCHITECTURAL SITE

PLAN

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LANE, DALLAS, NC 28034

AS100

LA

ZH

11/07/2025

P L

R T

H

TRUE

NORTH

1" = 50'-0"1

ARCHITECTURAL SITE PLAN

SYMBOL LEGEND

GENERAL NOTES

A. DO NOT SCALE DRAWING. CONTRACTOR SHALL RELY ON

WRITTEN DIMENSIONS AS SHOWN. THE CONTRACTOR

SHALL NOTIFY THE ARCHITECT FOR CLARIFICATION. ALL

DIMENSIONS SHALL BE FIELD VERIFIED BY THE

CONTRACTOR AND COORDINATED WITH ALL OF THE WORK

OF ALL TRADES. IF DISCREPANCIES ARE FOUND, THE

GENERAL CONTRACTOR SHALL NOTIFY THE ARCHITECT IN

WRITING FOR CLARIFICATION BEFORE STARTING THE

WORK.

1 HOUR RATED

WALL/PARTITION

14 15 15.3 16 171312

H

G

F

E

E.3

D

C

C.7

LECTURE

HALL 127

COMPUTER

CLASSROOM

SMALL

CLASSROOM

SMALL

CLASSROOM

SMALL

CLASSROOM

STAIR #1

141 ELEV

#1

CORRIDOR

COMM

133A

STORAGE

SPRINKLER

ROOM

136 ELEC

MECHANICAL

126A

CHAIR/TABLE

STORAGE

STAIR #2

OFFICE

OFFICE

105 DEPT

CHAIR

OFFICE

OFFICE

OFFICE

OFFICE

OFFICE

OFFICE

OFFICE

SMALL

CLASSROOM

SMALL

CLASSROOM

CORR

CHILD

DEVELOPMENT

CLASSROOM

140 ELEV

#1 EQUIP

118 FAC

TLT

119 FAC

TLT

JANITOR

115 MEN

FACULTY

BREAK

ROOM

122 ELEV

#2 EQUIP

123 ELEC

WOMEN

116 ELEV

#2

126B

STORAGE

126C

STORAGE

102D

STORAGE

STORAGE

102E

102E

STORAGE

102A

STORAGE

102B

STORAGE

CORR

CLASSIFICATION OF WORK LEGEND

LEVEL 1 ALTERATION

NO WORK

GROSS BUILDING AREA: 17,571 SF

CLASSIFICATION OF WORK TOTALS

LEVEL 1 ALTERATION: 2,562 SF (14.6%)

BASED ON TOTAL AREA OF WORK @ <50% OF GROSS BUILDING AREA

PROJECT DOES NOT NEED TO COMPLY WITH LEVEL 3 ALTERATION OF

THE NC EXISTING BUILDING CODE

EXISTING OVERHEAD COILING DOOR -

FIELD VERIFY LOCATION AND

CLEARANCE

EXISTING STEEL BEAM - FIELD VERIFY

LOCATION AND CLEARANCE

BOILER EXHAUST/INTAKE PIPING -

SEE MECHANICAL DRAWINGS FOR

MORE INFO. AND SPEC SECTION

230517 FOR SEALING REQUIREMENTS

CAST IRON THRU WALL PENETRATION

SLEEVE (WALL THIMBLE) FOR BOILER

EXHAUST/INTAKE PIPING (TYP. OF 4) -

SEE SPEC SECTION 230517 (SPACE

SLEEVES TO AVOID CUTTING OF

METAL STUDS). CONTINUOUS HEAT-

RESISTANT SILICONE SEALANT

AROUND PENETRATION

EXISTING BRICK VENEER GROUT AT

SLEEVE OPENING PER SPEC SECTION

230517

STAINLESS STEEL DRIP EDGE OVER

PENETRATION TO SHED WATER.

CONTINUOUS SILICONE SEALANT AT

TOP OF DRIP EDGE. DRIP EDGE TO

EXTEND 12" PAST OUTER EDGE OF

PENETRATION

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

SCO #25-29532-01A

NOT FOR

CONSTRUCTION

CLASSIFICATION OF

WORK

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LANE, DALLAS, NC 28034

A201

LA

ZH

11/07/2025

P L

R T

H

TRUE

NORTH

1/8" = 1'-0"1

FIRST FLOOR - CLASSIFICATION OF WORK

1 1/2" = 1'-0"2

BOILER EXHAUST/INTAKE @ EXTERIOR WALL

PIPE TURN UP (UP)

PIPE TURN DOWN (DN)

MECHANICAL PIPING LEGEND

MEDIUM PRESSURE STEAM PIPING

CONDENSATE DRAIN PIPINGCD

NAME OF PROJECT: GASTON COLLEGE RCB HEATING HOT WATER

UPGRADE

ADDRESS: 250 LIBRARY LN,

DALLAS, NC, 28034

PROPOSED USE: EDUCATION

OWNER/CONTACT PERSON: GASTON COLLEGE

CODE ENFORCEMENT JURISDICTION: GASTON COUNTY

BUILDING OCCUPANCY: BUSINESS

GROSS BUILDING AREA: 1,708 SF (IN SCOPE)

METHOD OF COMPLIANCE: PRESCRIPTIVE

THERMAL ZONE: 3A

MECHANICAL SYSTEMS, SERVICE SYSTEMS AND EQUIPMENT.

EXTERIOR DESIGN CONDITIONS:

WINTER DRY BULB: 23°F

SUMMER DRY BULB: 95°F

RELATIVE HUMIDITY: MCWB 74 F

INTERIOR DESIGN CONDITIONS:

WINTER DRY BULB: 72°F

SUMMER DRY BULB: 74°F

RELATIVE HUMIDITY: 50% R.H.

BUILDING HEATING LOAD: 1,065 MBH

BUILDING COOLING LOAD: 1,320 MBH

MECHANICAL SPACING CONDITIONING SYSTEM

DESCRIPTION OF UNIT: EXISTING TO REMAIN

HEATING EFFICIENCY: SEE SCHEDULES

COOLING EFFICIENCY: SEE SCHEDULES

HEAT OUTPUT OF SYSTEMS: SEE SCHEDULES

COOLING OUTPUT OF SYSTEMS: SEE SCHEDULES

MECHANICAL CODE SUMMARY

DESIGNATION DESCRIPTION

EXISTING TO REMAIN

(EQUIPMENT, DUCTWORK, PIPING, ETC.)

EXISTING/DEMOLITION/NEW

LEGEND

EXISTING TO BE DEMO'D OR RELOCATED -

REFER TO PLAN NOTES PRIOR TO DEMOLITION

(EQUIPMENT, DUCTWORK, PIPING, ETC.)

NEW

(EQUIPMENT, DUCTWORK, PIPING, ETC.)

BEGINNING OR END OF NEW WORK -OR-

CONNECT TO EXISTING

MECHANICAL GENERAL NOTES

DUCT PRESSURE CLASS REQUIREMENTS

PRESSURE CLASSDUCT SYSTEM

LOW PRESSURE EXHAUST

GENERAL ITEMS

A. GENERAL NOTES ON THIS DRAWING ARE APPLICABLE TO EACH HVAC

DRAWING OF THIS SET. SEE EACH DRAWING FOR SPECIFIC NOTES

APPLICABLE TO THAT DRAWING.

B. THE USE OF BRAND NAMES, INCLUDING MANUFACTURERS AND MODEL

NUMBERS, IS NOT INTENDED TO RESTRICT BIDDERS TO A SPECIFIC

MANUFACTURER OR LIST OF MANUFACTURERS. THE MANUFACTURERS AND

MODEL NUMBERS LISTED ON THESE MECHANICAL DRAWINGS ARE

INTENDED TO CONVEY THE GENERAL QUALITY AND CONFIGURATION OF A

PRODUCT. EQUIVALENT PRODUTS WILL BE CONSIDERED ACCEPTABLE

PROVIDED THAT APPROVAL OF THE SPECIFIC PRODUCT HAS BEEN GIVEN IN

WRITING BY THE ARCHITECT AND OWNER.

C. ARRANGE PIPING AND DUCTWORK AS REQUIRED TO CLEAR STRUCTURE,

DUCTS, CONDUITS, ETC. ALLOWING SPACE FOR PIPE HANGERS, ACCESS TO

VALVES, FILTERS, AND MAINTENANCE OF EQUIPMENT.

D. COORDINATE LOCATION AND INSTALLATION OF EQUIPMENT WITH OTHER

TRADES.

E. PIPING, DUCTWORK, VENTS, ETC., EXTENDING THROUGH EXTERIOR WALLS

AND ROOF MUST BE FLASHED AND COUNTER FLASHED IN A

WEATHERPROOF MANNER.

F. EXTEND DRAIN LINES AS INDICATED. ROUTING MUST NOT INTERFERE WITH

PASSAGEWAYS AND MAINTENANCE. SLOPE CONDENSATE DRAIN PIPING AT

1/8" PER FOOT.

G. PIPING AND DUCTWORK INSULATION MUST RUN CONTINUOUSLY THROUGH

NON-RATED FLOORS, WALLS, ROOF AND PARTITIONS, UNLESS OTHERWISE

INDICATED.

H. FOR LOCATION OF MOTOR STARTERS, SEE ELECTRICAL DRAWINGS.

I. NO PIPING SHALL BE SMALLER THAN 3/4" UNLESS OTHERWISE NOTED.

J. PROVIDE UNION OR FLANGED CONNECTIONS AT EACH PIECE OF EQUIPMENT

AND ON BOTH SIDES OF CONTROL VALVES AND PRESSURE REGULATING

VALVES. PROVIDE SHUT-OFF VALVES ON BOTH SIDES OF AUTOMATIC

VALVES.

K. PIPING MUST BE SUPPORTED IN ACCORDANCE WITH THE SPECIFICATIONS.

ADDITIONAL SUPPORTS OR HANGERS MUST BE ADJACENT TO ELBOWS TO

PREVENT WEIGHT OF PIPING BEING PLACED ON EQUIPMENT.

L. FILL IN ANY EXISTING PENETRATIONS THROUGH THE EXTERIOR WALL THAT

ARE NOT BEING UTILIZED FOR NEW BOILER VENT OR INTAKE DUCTWORK.

M. GENERAL CONTRACTOR MUST COORDINATE CONSTRUCTION SCHEDULE

WITH OWNER. CONTRACTOR MUST COORDINATE THE SCHEDULE OF THE

DOMESTIC HOT WATER SHUT DOWN WITH THE OWNER.

SHEET METAL

A. ALL DUCTWORK MUST BE FABRICATED AND INSTALLED IN ACCORDANCE

WITH THE LATEST EDITION OF SMACNA'S "HVAC DUCT CONSTRUCTION

STANDARDS - METAL AND FLEXIBLE."

B. PROVIDE BEARING PLATES AND OTHER NECESSARY REINFORCEMENTS AT

DUCTWORK SUPPORTS TO ENSURE THAT DUCT INSULATION MAINTAINS

REQUIRED "R" VALUES.

DESIGNATION DESCRIPTION

MPS

HOT WATER RETURN (HEATING)HWR

HOT WATER SUPPLY (HEATING)HWS

BUTTERFLY VALVE

UNION

DIRECTION OF FLOW

FULL PORT BALL VALVE

CHECK VALVE

Y-STRAINER

2.0" PRESSURE CLASS

LOW PRESSURE OUTDOOR AIR 2.0" PRESSURE CLASS

RELATIVE HUMIDITYRH

PHASEPH

PRESSURE DROPPD

OUTDOOR AIROA

MINIMUM CIRCUIT AMPACITYMCA

MECHANICAL CONTRACTORM.C.

1000 BTU PER HOURMBH

MAXIMUMMAX

LEAVING AIR TEMPERATURELAT

DEGREES FAHRENHEIT°F

EXHAUST AIREA

DIGITAL OUTPUTDO

BUILDING AUTOMATION SYSTEMBAS

AMERICAN SOCIETY OF MECHANICAL ENGINEERS

ASHRAE

ANALOG OUTPUTAO

MAXIMUM OVER CURRENT PROTECTION

INCHES WATER GAUGE (PRESSURE)

FULL LOAD AMPS

MOCP

ALARM

AIR HANDLING UNIT

ABOVE FINISHED FLOOR

IN. WG.

FLA

AL

AHU

AFF

AMERICAN SOCIETY OF HEATING,

REFRIGERATING, AND AIR CONDITIONING

ENGINEERS

ASME

MECHANICAL ABBREVIATIONS

DESCRIPTIONDESIGNATION

ENTERING AIR TEMPERATUREEAT

ELECTRICAL CONTRACTORE.C.

UNIT HEATERUH

CONTROLS CONTRACTORC.C.

AIR SEPARATORAS

DIFFERENTIAL PRESSUREDP

VARIABLE FREQUENCY DRIVEVFD

EXPANSION TANKET

HEAT PUMP OR HORSEPOWERHP

LOW PRESSURE STEAM PIPINGLPS

NATURAL GAS METERGM

NATURAL GAS PIPINGNG

GAS PRESSURE REDUCING REGULATOR

TEMPERATURE SENSORTS

AUTOMATIC FLOW LIMITING VALVE

AF

FLOW SWITCHFS

2-WAY CONTROL VALVE

CONDENSATE RETURN PUMPCR

BOILER SHUTOFFBS

SOLENOID VALVE

S

SUSPENDED PIPE ON TRAPEZE NOT REQUIRED 13.1.4.5

DUCTWORK NOT REQUIRED

NOT REQUIREDMULTIPLE DUCTS ON TRAPEZE

NOT REQUIRED

REQUIRED

(SEE NOTE 4)

13.2.2

13.1.4.5NOT REQUIRED

NOT REQUIRED 13.1.4.5

13.1.4.5RESTRAIN ALL13.1.4.5NOT REQUIRED

NOT REQUIRED 13.1.4.5

13.6.5

13.1.4.5

13.1.4.5

13.1.4.5RESTRAIN ALL

RESTRAIN ALL

RESTRAIN ALL

RESTRAIN ALL13.1.4.5

13.1.4.5

13.1.4.5

13.1.4.5NOT REQUIRED

NOT REQUIRED

NOT REQUIRED

NOT REQUIREDCOMPONENT SUPPORTS

WALL MOUNTED

FLOOR MOUNTED

ROOF MOUNTED

COMPONENT IDENTIFICATION

COMPONENT IMPORTANCE FACTOR (Ip)

SEISMIC DESIGN CATEGORY: C

RISK CATEGORY: III

SEISMIC AND WIND REQUIREMENTS

FOR MECHANICAL SYSTEMS

RESTRAIN IF ANY PIPE

ON TRAPEZE >2"

RESTRAIN IF TOTAL

WEIGHT OF PIPES ON

TRAPEZE >10 LB/FT

(SEE NOTE 2)

RESTRAIN IF TOTAL

WEIGHT OF DUCTS ON

TRAPEZE >10 LB/FT

(SEE NOTE 2,3)

COMPONENT CERTIFICATION

RESTRAIN ALL

(SEE NOTE 2)

SUSPENDED NON DUCTILE PIPING

(CAST IRON, PLASTIC, CERAMIC)

SUSPENDED DUCTILE PIPING

(STEEL, AL, CU, ETC.)

RESTRAIN IF>2"

(SEE NOTE 2)

NOT INLINE W/

DUCT/PIPE

SUSPENDED

EQUIPMENT

RESTRAIN IF >75 LB

PROVIDE FLEX. CONN.

(SEE NOTE 1)

INLINE W/

DUCT/PIPE

13.1.4.5

13.1.4.5

13.2.2

TABLE NOTES:

1. FLEXIBLE CONNECTIONS REQUIRED FOR PIPE CONNECTIONS ONLY.

2. RESTRAINT IS NOT REQUIRED IF THE PIPING OR DUCTWORK IS SUPPORTED BY HANGERS WHERE EACH HANGER IS 12 INCHES OR LESS IN LENGTH FROM THE TOP OF THE PIPE OR DUCT TO THE SUPPORTING STRUCTURE. WHERE PIPES OR DUCTS ARE SUPPORTED ON A TRAPEZE, THE TRAPEZE MUST BE SUPPORTED BY HANGERS HAVING A LENGTH OF 12 INCHES OR LESS. WHERE ROD HANGERS ARE USED, THEY MUST BE EQUIPPED WITH SWIVELS, EYES NUTS OR OTHER

DEVICES TO PREVENT BENDING IN THE ROD.

3. ALL PIPING AND DUCTWORK, REGARDLESS OF SIZE, DESIGNED TO CARRY TOXIC, HIGHLY TOXIC, OR EXPLOSIVE GASES OR

USED FOR SMOKE CONTROL MUST BE RESTRAINED.

4. COMPONENT CERTIFICATION MUST BE SUPPLIED BY THE EQUIPMENT MANUFACTURER AT THE TIME OF SUBMITTAL FOR

REVIEW BY ENGINEER OF RECORD.

5. ALL COMPONENTS HAVE LP=1.0 EXCEPT GAS PIPING AND GAS FIRED EQUIPMENT WHICH HAVE AN LP=1.5.

13.6.7

13.6.8.3.3.a

13.6.8.3.3

13.6.8.3.1

13.6.7

RESTRAIN IF >6 SQ.

FT. OR >17 LB/FT

(SEE NOTE 2, 3)

13.6.7

INFORMATION FOR NCSBC 2018 / ASCE 7-10

A. PER 2018 NORTH CAROLINA BUILDING CODE, MECHANICAL EQUIPMENT AND COMPONENTS, INCLUDING THEIR SUPPORTS AND ATTACHMENTS, MUST BE DESIGNED FOR SEISMIC FORCES IN ACCORDANCE WITH CHAPTER 13 OF ASCE 7-10.

B. EXTERIOR EQUIPMENT (INCLUDING ROOF CURBS AND ROOF RAILS) EXPOSED TO WIND MUST BE DESIGNED AND INSTALLED TO RESIST THE WIND PRESSURES DETERMINED IN ACCORDANCE WITH CHAPTERS 26 THROUGH 29 OF ASCE 7-10.

C. WHERE DESIGN FOR SEISMIC AND WIND LOADS IS REQUIRED, THE MORE DEMANDING FORCE MUST BE USED.

D. USE TABLE BELOW TO DETERMINE SEISMIC RESTRAINT REQUIREMENTS FOR EACH COMPONENT.

E. FOR ALL COMPONENTS REQUIRING SEISMIC RESTRAINT, THE COMPONENT SUPPORTS AND ATTACHMENTS MUST BE

DESIGNED BY A REGISTERED DESIGN PROFESSIONAL.

F. WHERE SEISMIC RESTRAINT IS REQUIRED, HOUSEKEEPING PADS NEEDED FOR THE INSTALLATION OF EQUIPMENT UNDER THIS CONTRACT MUST BE DESIGNED BY THE SEISMIC ENGINEER. DO NOT POUR ANY HOUSEKEEPING PADS PRIOR TO THE

RECEIPT OF APPROVED SEISMIC SUBMITTAL.

G. SEISMIC RESTRAINTS FOR DUCTWORK, PIPING AND CONDUIT MUST BE SHOWN ON SEISMIC SUBMITTAL LAYOUT DRAWINGS SHOWING SPECIFIC RESTRAINT LOCATIONS ALONG WITH ACCOMPANYING DETAILS AND CALCULATIONS.

SEISMIC RESTRAINT

REQUIREMENT

ASCE 7-10

REFERENCE

SEISMIC RESTRAINT

REQUIREMENT

ASCE 7-10

REFERENCE

1.0 1.5

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

FINAL REVIEW

SET

SCO #25-29532-01A

MECHANICAL -

GENERAL NOTES AND

LEGENDS

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LN, DALLAS, NC 28035

M0.1

FFR

NJH

11/07/2025

MECHANICAL SHEET INDEX

M0.1 MECHANICAL - GENERAL NOTES AND LEGENDS

M1.1 MECHANICAL HVAC - DEMOLITION PLAN

M1.2 MECHANICAL PIPING - DEMOLITION PLAN

M2.1 MECHANICAL HVAC - NEW CONSTRUCTION PLAN

M3.1 MECHANICAL PIPING - NEW CONSTRUCTION PLAN

M6.1 MECHANICAL - CONTROLS & SCHEDULES

M7.1 MECHANICAL - DETAILS

M7.2 MECHANICAL - PIPING DIAGRAMS

14 15 15.3 16 17

H

G

F

E

E.3

D

C

C.7

H

G

F

E.3

E

D

C.7

C

14 15.3 16 17

(ETR)

AHU-2

(ETR)

AHU-3

(ETR)

AHU-1

(ETR)

P-6

(ETR)

P-5

(ETR)

P-4

(ETR)

P-3

(ETR)

WCC-1

(ETBD)

B-1

(ETR)

WH-1

(ETBD)

HX-1

(ETBD)

CR-1

8ø-OA

60x24-RA

32x22-SA

32x22-SA32x32-SA

36x24-SA

36x24-SA

UP TO 3RD

FLOOR

44x24-RA

24x24-OA

36x20-RA

44x24-SA

24x24-OA

32x32-OA

32x32-OA

24x24-OA

26x22-RA

60x24-RA 32x22-SA

44x24-RA

24x24-OA

UP TO 3RD FLOOR

UP TO 2ND FLOOR

UP TO 2ND

FLOOR

44x24-SA

UP

UP

(ETR)

EF-6

16x16-EA

16x16-EA

UP

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

SCO #25-29532-01A

MECHANICAL HVAC -

DEMOLITION PLAN

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LN, DALLAS, NC 28035

M1.1

FFR

NJH

11/07/2025

1. M.C. MUST VISIT THE SITE TO CAREFULLY EXAMINE AND BECOME FAMILIARIZED WITH

THE DEMOLITION DOCUMENTS AND EXISTING CONDITIONS PRIOR TO BIDDING.

SUBMISSION OF A PROPOSAL WILL BE CONSIDERED AS EVIDENCE THAT SUCH AN

EXAMINATION HAS BEEN PERFORMED. M.C MUST INCLUDE IN HIS BID ALL WORK

NEEDING TO BE DONE AFTER HOURS, ON WEEKENDS, AND ANY WORK REQUIRING

SHUTDOWNS OR ANY TIME THAT MAY REQUIRE OVERTIME. LATER CLAIMS FOR EXTRA

LABOR OR MATERIALS REQUIRED DUE TO DIFFICULTIES ENCOUNTERED WILL NOT BE

RECOGNIZED.

2. DEMO EQUIPMENT SHOWN DASHED. RELOCATE EQUIPMENT SHOWN DASHED AND

NOTED. REFER TO KEY NOTES FOR ADDITIONAL DEMOLITION INFORMATION.

3. DEMOLITION WORK MUST BE COORDINATED WITH THE OWNERS REPRESENTATIVE

AND ALSO BE COORDINATED WITH ALL EXISTING ARCHITECTURAL, MECHANICAL,

ELECTRICAL, AND STRUCTURAL SYSTEMS.

4. EXISTING CONDITIONS, EQUIPMENT, MATERIALS, AND SIZES ARE SHOWN FOR

REFERENCE ONLY. M.C. IS RESPONSIBLE TO VERIFY EXISTING CONDITIONS AND

BRING ANY DISCREPANCIES TO THE ENGINEER'S ATTENTION IN WRITING PRIOR TO

DEMOLITION AND STARTING NEW WORK.

5. ANY REMAINING SYSTEMS DAMAGED DURING THE DEMOLITION PHASE OF WORK

MUST BE RESTORED TO ORIGINAL CONDITION AT NO ADDITIONAL COST.

6. G.C. MUST REPAIR AND PATCH ALL EXISTING CONSTRUCTION ITEMS. ANY EXISTING

HVAC SYSTEM ITEMS THAT ARE TO REMAIN ARE SHOWN ON THE NEW WORK HVAC

FLOOR PLAN. IT IS THE RESPONSIBILITY OF THE M.C. TO MAINTAIN THE CONTINUITY

OF THE EXISTING HVAC SYSTEMS TO REMAIN.

GENERAL NOTES - MECHANICAL

1. DEMOLISH EXISTING COMBUSTION AIR INTAKE FOR BOILER. INFILL ANY EXSITING

OPENINGS NOT TO BE RE-USED. MATCH EXISTING BUILDING CONSTRUCTION WHEN

INFILLING UNUSED OPENINGS IN THE BUILDING EXTERIOR WALLS.

2. REFER TO SHEET M1.2 FOR ADDITIONAL INFORMATION CONCERNING DEMOLITION OF

THE EXISTING GAS FIRED BOILER.

3. EXISTING AIR HANDLERS ARE TO REMAIN AND BE UPFIT WITH NEW AIR CLEANING

DEVICES. REFER TO SHEET M2.1 FOR ADDITIONAL INFORMATION.

4. DEMOLISH EXISTING FLUE VENT FOR BOILER. IF POSSIBLE REUSE THIS OPENING FOR

A NEW BOILER FLUE VENT. IF THIS OPENING CANNOT BE REUSED, INFILL EXISTING

OPEINING TO MATCH EXISTING BUILDING CONSTRUCTION.

KEYED NOTES#

GRAPHICS SCALE

8' 12' 16'4'

SCALE: 1/4" = 1'-0"

TRUE

NORTH

SCALE 1/4" = 1'-0"

MECHANICAL - HVAC PLAN - DEMOLITION

14 15 15.3 16 1713

G

F

E

E.3

D

C

C.7

H

G

F

E.3

E

D

C.7

C

13 14 15 15.3 16 17

(ETR)

AHU-3

(ETR)

AHU-2

(ETR)

AHU-1

(ETR)

WCC-1

(ETR)

P-3

(ETR)

P-4

(ETR)

P-5

(ETR)

P-6

B-1

B-2

(ETR)

WH-1

8ø-EA

8ø-OA

MECHANICAL

UV-14

UV-24

UV-3

8ø-EA

8ø-OA

M2.1

(ETR)

EF-6

EXISTING RETAINING WALL

H G

8ø-EA

16x16-EA

BOILER

INTAKE

BOILER

COMBUSTION AIR

EXHAUST ABOVE

RETAINING WALL

AND INTAKE

EXISTING EXHAUST LOUVER

RETAINING

WALL

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

SCO #25-29532-01A

MECHANICAL HVAC -

NEW CONSTRUCTION

PLAN

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LN, DALLAS, NC 28035

M2.1

FFR

NJH

11/07/2025

1. EXISTING CONDITIONS, EQUIPMENT, MATERIALS, LOCATIONS, AND SIZES ARE

SHOWN FOR REFERENCE ONLY. M.C. IS RESPONSIBLE TO VERIFY ALL

EXISTING CONDITIONS/SIZES AND NOTIFY ENGINEER OF ANY DISCREPANCIES

IN WRITING PRIOR TO STARTING WORK.

2. CAP AND REPAIR EXISTING PIPING FROM DEMOLITION NOT USED. SEAL AIR

TIGHT AND PATCH INSULATION. M.C. MUST MATCH EXISTING PIPE AND

INSULATION SYSTEMS.

3. CLEAN AND REPAIR EXISTING DUCTWORK & INSULATION WITHIN THE SCOPE

OF PROJECT TO LIKE-NEW CONDITION.

GENERAL NOTES

SCALE 1/4" = 1'-0"

MECHANICAL - HVAC PLAN - NEW CONSTRUCTION

1. PROVIDE FACTORY FRESH AIR INTAKE KIT FROM BOILER MANUFACTURER. ROUTE

INTAKE TO BUILDING EXTERIOR IN A NEW OPENING IN THE EXTERIOR WALL.

CONTRACTOR TO PROVIDE NEW WALL OPENINGS FOR INTAKE DUCT.

2. PROVIDE FACTORY FLUE KIT FROM BOILER MANUFACTURER. ROUTE VENT TO

BUILDING EXTERIOR. CONTRACTOR TO UTILIZE EXISTING BOILER VENT OPENING IF

POSSIBLE. REFER TO DETAIL 12/M7.1 FOR EXHAUST FLUE DUCT ROUTING ON THE

EXTERIOR OF THE BUILDING. MAINTAIN ALL CLEARANCES NOTED IN THE BOILER

MANUFACTURERS INSTALLATION MANUAL.

3. REPLACE EXISTING MERV-8 FILTERS IN THE AIR HANDLING UNIT WITH 2" MERV-13

FILTERS. CAMFIL AQ13 2" FILTERS ARE THE BASIS OF DESIGN. THE DIFFERENTIAL

PRESSURE ALARM ACROSS SETPOINT SHOULD REMAIN UNCHANGED.

4. PROVIDE UV LIGHTING UPSTREAM OF THE COOLING COIL. INSTALL UV LIGHTING

BASED ON UV MANUFACTURER INSTALLATION INSTRUCTIONS. MOUNT UV LIGHTING

CONTROL BOX ON A NEW UNISTRUT RACK NEXT TO THE ASSOCIATED AIR HANDLING

UNIT. INTERLOCK UV LIGHTS WITH THE CORRESPONDING AHU DOORS. THE LIGHTS

SHOULD SHUT OFF WHEN THE DOORS OPEN.

5. DUCTWORK SHOWN ON PLANS NEXT TO EACH OTHER FOR REFERENCE. STACK

BOILER INTAKE AND VENT DUCTWORK ALONG THE EXTERIOR WALL AS SHOWN IN

DETAIL 9/M7.1.

6. ACCESS DOOR MARKS THE END OF PUBLIC WALKWAY FOR EGRESS. THE SPACE

BETWEEN THIS DOOR AND THE RETAINING WALL AT THE END OF THE ALLEY IS FOR

SERVICE ACCESS TO THE MECHANICAL ROOM ONLY.

KEYED NOTES#

GRAPHICS SCALE

8' 12' 16'4'

SCALE: 1/4" = 1'-0" TRUE

NORTH

SCALE 3/4" = 1'-0"

EXTERIOR WALL BOILER COMBUSTION AIR AND INTAKE

SCALE: 3/4" = 1'-0"GRAPHICS SCALE

4' 6'2'

G

F

E

E.3

D

C

C.7

H

G

F

E.3

E

D

C.7

C

14 15 15.3 16 17

(ETR)

AHU-3

(ETR)

AHU-2

(ETR)

AHU-1

(ETR)

WCC-1

(ETR)

P-3

(ETR)

P-4

(ETR)

P-5

(ETR)

P-6

B-1 B-2

(ETR)

WH-1

8ø-EA

8ø-OA

MECHANICAL

UV-14

UV-24

UV-3

8ø-EA 8ø-OA

M2.1

(ETR)

EF-6

H G

8ø-EA

8ø-OA

16x16-EA

BOILER

INTAKE

BOILER

COMBUSTION

AIR EXHAUST

ABOVE

RETAINING WALL

AND INTAKE

EXHAUST LOUVER

RETAINING

WALL

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

SCO #25-29532-01A

MECHANICAL HVAC -

NEW CONSTRUCTION

PLAN

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LN, DALLAS, NC 28035

M2.1

FFR

NJH

11/07/2025

1. EXISTING CONDITIONS, EQUIPMENT, MATERIALS, LOCATIONS, AND SIZES ARE

SHOWN FOR REFERENCE ONLY. M.C. IS RESPONSIBLE TO VERIFY ALL

EXISTING CONDITIONS/SIZES AND NOTIFY ENGINEER OF ANY DISCREPANCIES

IN WRITING PRIOR TO STARTING WORK.

2. CAP AND REPAIR EXISTING PIPING FROM DEMOLITION NOT USED. SEAL AIR

TIGHT AND PATCH INSULATION. M.C. MUST MATCH EXISTING PIPE AND

INSULATION SYSTEMS.

3. CLEAN AND REPAIR EXISTING DUCTWORK & INSULATION WITHIN THE SCOPE

OF PROJECT TO LIKE-NEW CONDITION.

GENERAL NOTES

SCALE 1/4" = 1'-0"

MECHANICAL - HVAC PLAN - NEW CONSTRUCTION

1. PROVIDE FACTORY FRESH AIR INTAKE KIT FROM BOILER MANUFACTURER. ROUTE

INTAKE TO BUILDING EXTERIOR IN A NEW OPENING IN THE EXTERIOR WALL.

CONTRACTOR TO PROVIDE NEW WALL OPENINGS FOR INTAKE DUCT.

2. PROVIDE FACTORY FLUE KIT FROM BOILER MANUFACTURER. ROUTE VENT TO

BUILDING EXTERIOR. CONTRACTOR TO UTILIZE EXISTING BOILER VENT OPENING IF

POSSIBLE. REFER TO DETAIL 12/M7.1 FOR EXHAUST FLUE DUCT ROUTING ON THE

EXTERIOR OF THE BUILDING.

3. REPLACE EXISTING MERV-8 FILTERS IN THE AIR HANDLING UNIT WITH 2" MERV-13

FILTERS. CAMFIL AQ13 2" FILTERS ARE THE BASIS OF DESIGN. THE DIFFERENTIAL

PRESSURE ALARM ACROSS SETPOINT SHOULD REMAIN UNCHANGED.

4. PROVIDE UV LIGHTING UPSTREAM OF THE COOLING COIL. INSTALL UV LIGHTING

BASED ON UV MANUFACTURER INSTALLATION INSTRUCTIONS. MOUNT UV LIGHTING

CONTROL BOX ON A NEW UNISTRUT RACK NEXT TO THE ASSOCIATED AIR HANDLING

UNIT. INTERLOCK UV LIGHTS WITH THE CORRESPONDING AHU DOORS. THE LIGHTS

SHOULD SHUT OFF WHEN THE DOORS OPEN.

5. DUCTWORK SHOWN ON PLANS NEXT TO EACH OTHER FOR REFERENCE. STACK

BOILER INTAKE AND VENT DUCTWORK ALONG THE EXTERIOR WALL AS SHOWN IN

DETAIL 9/M7.1.

KEYED NOTES#

GRAPHICS SCALE

8' 12' 16'4'

SCALE: 1/4" = 1'-0" TRUE

NORTH

SCALE 3/4" = 1'-0"

EXTERIOR WALL BOILER COMBUSTION AIR AND INTAKE

SCALE: 3/4" = 1'-0"GRAPHICS SCALE

4' 6'2'

G

F

E.3

E

D

C.7

C

(ETR)

AHU-3

(ETR)

AHU-2

(ETR)

AHU-1

(ETR)

WCC-1

(ETR)

P-3

(ETR)

P-4

(ETR)

P-5

(ETR)

P-6

B-1 B-2

(ETR)

WH-1

CONTINUES TO REST

OF CAMPUS

HHWP-1

2 1/2" MPS

2" CD

(ETR)

P-1

(ETR)

P-2

AS-1

2 1/2" HWS

2 1/2" HWR

2 1/2" HWS

2 1/2" HWR

2 1/2" HWS

2 1/2" HWR

2 1/2" HWS

2 1/2" HWR

2 1/2" HWR

2 1/2" HWS

(ETR)2 1/2" HWS

(ETR)2 1/2" HWR

(ETR)1" NG

1" NG

1" NG

1" NG

(ETR)2" HWS

(ETR)2" HWR

(ETR)2" HWS

(ETR)2" HWR

(ETR)2" HWS

(ETR)2" HWR

(ETR)2" HWS

(ETR)2" HWR2 1/2" HWS

BUILDING MAX NG

CAPACITY:

1,500 CFH

(ETR)1" NG

(ETR)2" HWS

(ETR)2" HWR

(ETR)2" HWR

(ETR)2" HWS

CONTINUES TO

REST OF BUILDING

MECHANICAL

BS

ET-1

BS

1" CD

1" CD

10 10

1" CD

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

KEYPLAN

MECH &

ELEC

ROOM

FINAL REVIEW

SET

SCO #25-29532-01A

MECHANICAL PIPING -

NEW CONSTRUCTION

PLAN

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LN, DALLAS, NC 28035

M3.1

FFR

NJH

11/07/2025

1. EXISTING CONDITIONS, EQUIPMENT, MATERIALS, LOCATIONS, AND SIZES ARE

SHOWN FOR REFERENCE ONLY. M.C. IS RESPONSIBLE TO VERIFY ALL

EXISTING CONDITIONS/SIZES AND NOTIFY ENGINEER OF ANY DISCREPANCIES

IN WRITING PRIOR TO STARTING WORK.

2. CAP AND REPAIR EXISTING PIPING FROM DEMOLITION NOT USED. SEAL AIR

TIGHT AND PATCH INSULATION. M.C. MUST MATCH EXISTING PIPE AND

INSULATION SYSTEMS.

GENERAL NOTES

1. CAP EXISTING MEDIUM PRESSURE STEAM AND CONDENSATE PIPES ENTERING THE

BUILDING AT THE POINT THEY ENTER THE MECHANICAL ROOM. PROVIDE END OF LINE

DRIP LEG AND TRAP. SEE DETAIL 7/M7.1.

2. PROVIDE A NEW 4" HOUSE KEEPING PAD UNDERNEATH THE TWO NEW BOILERS, B-1

AND B-2. REFER TO DETAIL ON M7.1 FOR DIMENSIONS OF THE HOUSEKEEPING PAD.

3. MAINTAIN 3' OF CLEARANCE FROM ELECTRICAL PANELS AND BAS PANELS LOCATED

ON THE WALL TO THE BOILER.

4. THE EXISTING NATURAL GAS METER LOCATED ON THE EXTERIOR OF THE BUILDING

ABOVE GRADE SHALL REMAIN TO SERVE THE NEW BOILERS.

5. REFER TO NATURAL GAS EQUIPMENT CONNECTION DETAIL ON SHEET M7.1 TO SEE

CONNECTION REQUIREMENTS.

6. PROVIDE BOILER EMERGENCY STOP SWITCH (ESS) NEXT TO THE ENTRY DOOR INTO

THE MECHANICAL ROOM. TIE THE BOILER SHUT OFF SWITCH INTO THE NATURAL GAS

SOLENOID VALVE.

7. TIE GAS SOLENOID SHUT-OFF VALVE INTO EMERGENCY STOP SWITCHES (ESS).

8. EXISTING VALVE SCHEDULE IS LOCATED ON THIS WALL. PROVIDE THE OWNER WITH A

NEW VALVE SCHEDULE BASED ON THE NEW HYDRONIC PIPING.

9. PUMP MOTOR TO BE MOUNTED VERTICALLY. DO NOT INSTALL PUMP WITH

HORIZONTAL MOUNT MOTOR.

10. PIPE ALL RELIEF AND/OR DRAIN PIPING OVERHEAD AND DOWN TO NEAREST FLOOR

DRAIN. LOCATE ALL VALVES IN ACCESSIBLE LOCATIONS. REFER TO PIPING DIAGRAMS

AND DETAILS FOR REQUIRED VALVING.

11. TERMINATE ALL NEW DRAIN PIPING WITH AIR GAP ABOVE EXISTING FLOOR DRAIN.

12. ROUTE NEW BOILER CONDENSATE DRAIN PIPING TIGHT TO OUTSIDE EDGE OF NEW

BOILER EQUIPMENT PAD. CROSS THE OPEN FLOOR IN THE MOST DIRECT PATH

POSSIBLE TO THE NOTED FLOOR DRAIN.

KEYED NOTES#

GRAPHICS SCALE

8' 12' 16'4'

SCALE: 1/4" = 1'-0" TRUE

NORTH

SCALE 1/4" = 1'-0"

MECHANICAL - PIPING PLAN - NEW CONSTRUCTION

POINT DESCRIPTION UNITS

HEATING HOT WATER SYSTEM

CONTROL DIAGRAM AND SEQUENCE OF OPERATIONS

OA-T

B-1-HWS-T

S-HWS-T*

S-HWR-T*

P-1-O*

P-1-C*

DP-SP*

OUTSIDE AIR TEMPERATURE

SECONDARY HOT WATER SUPPLY TEMPERATURE

SECONDARY HOT WATER RETURN TEMPERATURE

SECONDARY HOT WATER PUMP 1 VFD OUTPUT

SECONDARY HOT WATER PUMP 1 COMMAND

DIFFERENTIAL PRESSURE SETPOINT

DEG F

DEG F

DEG F

OFF ON

PSI

%P-2-O* SECONDARY HOT WATER PUMP 2 VFD OUTPUT

P-2-C* SECONDARY HOT WATER PUMP 2 COMMAND OFF ON

HEATING HOT WATER SYSTEM CONTROL POINTS LIST

B-2-HWS-T

DEG F

DEG F

PSIS-HW-DP* SECONDARY HOT WATER DIFFERENTIAL PRESSURE

BOILER 1 HOT WATER SUPPLY TEMPERATURE

BOILER 2 HOT WATER SUPPLY TEMPERATURE

B-1-HWR-T

B-2-HWR-T

DEG F

DEG F

BOILER 1 HOT WATER RETURN TEMPERATURE

BOILER 2 HOT WATER RETURN TEMPERATURE

HHWP-1-S PRIMARY HOT WATER PUMP 1 STATUS OFF ON

P-1-S* SECONDARY HOT WATER PUMP 1 STATUS OFF ON

P-2-S* SECONDARY HOT WATER PUMP 2 STATUS OFF ON

HHWP-1-C PRIMARY HOT WATER PUMP 1 COMMAND OFF ON

HWS

HWR

S-HWR-F

B-1-EN

B-1-A

BOILER B-1

CONTROL

CABINET

HHWP-1-C

HHWP-1-S

HHWP-1

B-1-HWS-T

B-1-HWR-T

S-HWS-T

P-2 (LAG)

P-1 (LEAD)

P-1 VFD

P-2 VFD

P-2-S P-2-C

P-2-O

P-1-S P-1-C

P-1-O

B-1

S-HWR-T

B-2-EN

B-2-A

B-2-HWS-T

B-2-HWR-T

S-HW-DP

B-2

PRIMARY HOT WATER PUMP CONTROL (HHWP-1): THE PRIMARY HOT WATER PUMP IS STARTED/STOPPED BY A SIGNAL FROM THE BOILER. THE PUMP MUST RUN FOR AN ADJUSTABLE TIME DELAY AFTER THE BOILER STOPS. THIS FUNCTION IS CONTROLLED BY THE BOILER CONTROLLER. IF IT'S STATUS DOES NOT MATCH IT'S COMMANDED VALUE, AN ALARM MUST BE GENERATED.

SECONDARY HOT WATER PUMP CONTROL (P-1 & P2): EXISTING CONTROLS AND SEQUENCE TO REMAIN FOR SECONDARY HOT

WATER PUMPS.

BOILER CONTROL (B-1 & B-2): WHEN THERE IS A CALL FOR HEATING BY THE BAS ENABLE THE LEAD BOILER. IF THE HEATING HOT WATER TEMPERATURE FAILS TO INCREASE TO SETPOINT DISABLE THE LEAD BOILER AND ENABLE THE LAG BOILER. PROVIDE AN ALARM AT THE BAS IF THE STATUS OF THE BOILER DOES NOT MATCH IT'S COMMAND VALUE. FACTORY MOUNTED CONTROLS MUST

BE USED TO MAINTAIN THE SUPPLY WATER TEMPERATURE SETPOINT OF 180°F (ADJ).

THE FOLLOWING POINTS MUST BE DISPLAYED ON THE CONTROL GRAPHICS:

BOILER B-2

CONTROL

CABINET

GPMS-HWR-F* SECONDARY HOT WATER RETURN FLOW

B-1-EN OFF ONBOILER 1 ENABLE

B-1-A BOILER 1 ALARM DESCRIPTION

B-2-EN OFF ONBOILER 2 ENABLE

B-2-A BOILER 2 ALARM DESCRIPTION

P-HWS-F

P-HWS-F GPMPRIMARY HOT WATER SUPPLY FLOW

CONTROL POINT NOTES:

1. CONTROL POINTS SHOWN ABOVE IN GREY AND WITH * ARE EXISTING AND MUST REMAIN.

HTG-2-O

NC

HTG-1-O

NO

%HTG-1-O HEATING OUTPUT - VALVE POSITION 1

%HTG-2-O HEATING OUTPUT - VALVE POSITION 2

THE EXISTING DDC SYSTEM MUST BE EXTENDED TO CONTROL NEW EQUIPMENT. TIE THE NEW EQUIPMENT INTO THE BAS VIA BACNET. UPDATE

SYSTEM GRAPHICS TO REFLECT THE SYSTEM MODIFICATIONS.

NOTES:

1. BASIS OF DESIGN IS BELL & GOSSETT. REFER TO SPECIFICATIONS FOR APPROVED EQUALS.

2. PROVIDE WITH ASME CONSTRUCTION.

3. PROVIDE WITH HIGH CAPACITY AIR VENT, AUTOMATIC AIR VENT, PRV, RELIEF VALVE, AND BLOW

DOWN CONNECTION WITH STRAINER.

NOTES:

1. BASIS OF DESIGN IS LOCHINVAR. REFER TO SPECIFICATIONS FOR APPROVED EQUALS.

2. PROVIDE FULL-COLOR 8" TOUCHSCREEN LCD DISPLAY.

3. PROVIDE MODULATING BURNER WITH MINIMUM TURNDOWN OF 10:1

4. PROVIDE ASME STAINLESS STEEL HEAT EXCHANGER.

5. PROVIDE FACTORY STAINLESS STEEL SIDEWALL VENT TERMINATION KIT.

6. PROVIDE WITH CONDENSATE NEUTRALIZATION KIT, LOW WATER CUTOFF W/ MANUAL RESET & TEST.

7. PROVIDE BMS GATEWAY.

8. E.C. TO PROVIDE DISCONNECT.

NOTES:

1. BASIS OF DESIGN IS BELL & GOSSETT. REFER TO SPECIFICATIONS FOR APPROVED

EQUALS.

2. PROVIDE WITH ASME CONSTRUCTION AND HEAVY DUTY BUTYL RUBBER BLADDER.

3. PROVIDE WITH LIFTING RINGS AND CHARGING VALVE CONNECTION.

NOTES:

1. BASIS OF DESIGN IS ARMSTRONG. REFER TO SPECIFICATIONS FOR APPROVED EQUALS.

2. E.C. TO PROVIDE AND INSTALL COMBINATION STARTER/DISCONNECT WITH THERMAL OVERLOAD PROTECTION.

3. PROVIDE WITH SUCTION DIFFUSER.

4. PROVIDE WITH RELIEF VALVE, AUTOMATIC AIR VENT, HIGH CAPACITY AIR VENT, PRESSURE REDUCING VALVE.

NOTES:

1. BASIS OF DESIGN IS UV RESOURCES. THE FOLLOWING ARE APPROVED EQUALS: STERILE-AIRE, AMERICAN ULTRAVIOLET

2. ENABLE THE UV-LIGHTS WHEN THE SUPPLY FANS IN THEIR RESPECTIVE AHU ARE ENABLED.

NOTE:

THE EMERGENCY STOP SWITCH (ESS) IS PROVIDED AND INSTALLED BY THE CONTROLS CONTRACTOR.

SEQUENCE: IF AN ESS IS ACTIVATED, THE BOILERS MUST SHUT DOWN AND AN ALARM MUST BE

GENERATED TO THE BAS.

EMERGENCY STOP SWITCH SEQUENCE OF OPERATIONS

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

FINAL REVIEW

SET

SCO #25-29532-01A

MECHANICAL -

CONTROLS &

SCHEDULES

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LN, DALLAS, NC 28035

M6.1

FFR

NJH

11/07/2025

BOILER SCHEDULE

MARK MANUFACTURER MODEL TYPE FUEL TYPE

INPUT

(MBH)

OUTPUT

(MBH)

EFFICIENCY

MIN. FLOW

(GPM)

MAX FLOW

(GPM)

DESIGN FLOW

(GPM)

PD

(FT. W.G.)

EWT

(°F)

LWT

(°F)

VOLUME

(GAL.)

GAS

(IN.)

COMBUSTION AIR

INLET (IN.)

FLUE GAS VENT

(IN.)

VOLT/

PHASE

APPROX.

WEIGHT (LB)

NOTES

B-1 LOCHINVAR FCB1500 CONDENSING FIRE TUBE NATURAL GAS 1,500 1,443 96.2 25 350 53 7.3 140 180 94 4-14 8 8 120 / 1 2,345 ALL

B-2 LOCHINVAR FCB1500 CONDENSING FIRE TUBE NATURAL GAS 1,500 1,443 96.2 25 350 53 7.3 140 180 94 4-14 8 8 120 / 1 2,345 ALL

PUMP SCHEDULE

MARK MANUFACTURER MODEL TYPE

FLOW

(GPM)

FRICTION HEAD

(FT. W.G.)

MOTOR

(HP)

VOLT / PHASE

APPROX.

WEIGHT (LB)

NOTES

HHWP-1 ARMSTRONG

SERIES DESIGN ENVELOPE

SENSORLESS 4380 1503

INLINE 53 31 1 460 / 3 54 ALL

AIR SEPARATOR SCHEDULE

MARK MANUFACTURER MODEL SYSTEM

FLOW

(GPM)

PD

(FT. W.G.)

NOTES

AS-1 BELL & GOSSETT CRSN-2F

HEATING HOT

WATER

53 1.2 ALL

EXPANSION TANK SCHEDULE

MARK MANUFACTURER MODEL

DIAMETER

(IN)

ACCEPTABLE

VOLUME (GAL)

NOTES

ET-1 BELL & GOSSETT B130 20 13.4 ALL

UV LIGHTING SCHEDULE

MARK

ASSOCIATED

EQUIPMENT

MANUFACTURER MODEL

PLENUM

DIMENSIONS

COIL

DIMENSIONS

LAMPS PER

ROW

NUMBER OF

ROWS

ELECTRICAL DATA

NOTES

VOLTAGE

WATTS PER

LAMP

TOTAL

POWER (W)

UV-1 AHU-1 UV RESOURCES RLM XTREME 56" X 78" 55" X 77" 2 2 120 145 740 ALL

UV-2 AHU-2 UV RESOURCES RLM XTREME 56" X 78" 55" X 77" 2 2 120 145 740 ALL

UV-3 AHU-3 UV RESOURCES RLM XTREME 56" X 91" 55" X 90" 2 2 120 145 740 ALL

NOTE: FOR ANGLE SIZE AND HANGER STRAP GAUGE, SEE

SMACNA LOW PRESSURE DUCT CONSTRUCTION STANDARDS.

SECURE TO BOTTOM

AND SIDES OF DUCT

WITH SHEET METAL

SCREWS

NUT WITH WASHER

(TYPICAL)

METAL HANGER STRAP

STEEL ANGLE

TO STRUCTURE

THREADED ROD

(TYPICAL)

HANGER

LOAD

RATED

FASTENERS

<=24" <=36"

SECURE

WIRE

<=10"

HANGERS,

RODS, WIRES,

OR STRAPSTO STRUCTURE

BAND

4" CONCRETE

HOUSEKEEPING PAD

6X6 WOVEN

WIRE MESH

DOWEL INTO

BUILDING SLAB

(TYPICAL)

CONCRETE FLOOR SLAB

NOTES:

1. ALL CONCRETE PADS MUST BE THE SIZE OF THE EQUIPMENT FOOTPRINT PLUS 6"

ON ALL SIDES.

2. SEISMIC RESTRAINT REQUIREMENTS MAY ALTER - REFER TO SPECIFICATIONS.

45° CHAMFER

GAUGE ISOLATION

VALVE (BALL VALVE)

BALL

VALVE

STRAINER WITH BLOWDOWN

VALVE AND HOSE ADAPTER

NOTES:

1. INSTALL DIFFERENT PRESSURE SWITCH ON EACH PUMP CONNECTED TO THE DDC

SYSTEM TO ALLOW PUMP OPERATION TO BE MONITORED.

2. PROVIDE DIELECTRIC FITTINGS BETWEEN DISSIMILAR METALS.

3. DO NOT LOCATE PUMPS OVER BOILERS OR BURNERS.

INLINE

PUMP

TRIPLE

DUTY

VALVE

PRESSURE GAUGE - SELECT

RANGE TO SUIT PUMP HEAD

(TYPICAL)

FLEXIBLE

CONNTECTOR

(TYP.)

INLINE PUMP MOTOR TO BE

INSTALLED VERTICALLY

CLAMP MUST BE LOCATED

MAXIMUM OF 3" FROM JOIST PANEL

POINT. IF NOT PROVIDE VERTICAL

ANGLE IRON SUPPORT FRONT AND

BACK TO STRENGTHEN.

B-LINE OR EQUAL TOP BEAM

CLAMP (USE ONLY ON LEVEL

JOIST MEMBERS).

B-LINE B3100 OR EQUAL

CLEVIS HANGER.

PIPE INSULATION. REFER TO

SPECIFICATIONS FOR DETAILS.

PIPING REFER TO

SPECIFICATION

FOR DETAILS

B-LINE B3151 OR EQUAL

SHEET METAL

INSULATION SHIELD

NOTES:

1. PIPE HANGER SPACING MUST BE IN ACCORDANCE WITH THE LATEST ADOPTED VERSION OF

THE NORTH CAROLINA MECHANICAL CODE.

2. PROVIDE UNISTRUT OR ANGLE IRON BRIDGING SPANNING MULTIPLE BAR JOIST AS REQUIRED.

3. PRIME OR PAINT ALL HANGERS, PIPE WELDS, AND OTHER ITEMS SUBJECT TO RUSTING.

TYPICAL WATER

PIPING

REDUCER, IF

REQUIRED

3/4" GATE VALVE

ADAPTER TO 3/4" HOSE

THREAD - PROVIDE

HOSE CAP NUT

ELEVATION

THREADED PIPING

ELEVATION

WELDED PIPING

NOTE:

DRAIN ALL LOW POINTS AS INDICATED ABOVE.

6" DIRT LEG

(FULL SIZE)

AGA

APPROVED

FLEXIBLE

CONNECTOR

GAS

COCK

GAS

EQUIPMENT

GAS MAIN

(SEE SIZE

ON PLANS)

SIZE TO EQUIPMENT

CONNECTION

PRESSURE

REGULATOR

FLOOR

MANUFACTURER

PROVIDED

GAS TRAIN

PRESSURE RELIEF

VALVE

(30 P.S.I.)

GAS VENT

HOT

WATER

RETURN

DRAIN VALVE

REFER TO CONDENSATE DRAIN DETAIL

GAS

SUPPLY

RELIEF PIPE TO FLOOR DRAIN

ANY ANGLE

THERMOMETER

(0-250 RANGE)

(TYP)

4" HIGH CONCRETE PAD

(VERIFY WITH EQUIPMENT

PROVIDE)

CHECK VALVEY-STRAINER (TYP)

HOT WATER

SUPPLY

2-WAY CONTROL VALVE

EXISTING

FLOOR

DRAIN.

VACUUM BREAK

NEUTRALIZER KIT,

3" MIN. BELOW

CONDENSATE

TRAP.

CONDENSATE

TRAP, SAME

LEVEL OR

BELOW BOILER

BASE.

BOILER

EQUIPMENT

PAD

6"

DIRT LEG

STEAM SUPPLY

THERMOSTATIC

AIR VENT

CONDENSATE RETURN

STRAINER

1/2" BLOWDOWN VALVE

GATE

VALVE

(TYPICAL)

CHECK VALVE REQUIRED ONLY

IF RETURN IS ABOVE TRAP

UNION (TYPICAL)

1/2" BUCKET TRAP

12"

(MINIMUM)

CONDENSATE RETURN

15"

NOTES:

1. REFER TO DUCT HANGER DETAIL FOR HANGER REQUIREMENTS.

MECHANICAL ROOM WALL

TO STRUCTUREB-1 INTAKE DUCT

B-2 INTAKE DUCT

B-1 VENT DUCT

B-2 VENT DUCT

STRUT CLAMP

(TYP.)

2' 0"

NOTES:

1. INSTALL EMERGENCY STOP SWITCH IN A LISTED, METALLIC SINGLE GANG JUNCTION

BOX IMMEDIATELY ADJACENT TO THE THERMOSTAT. THE CLEARANCE BETWEEN

THE BOX AND SHEETROCK MUST NOTEXCEED 1/8".

2. PROVIDE UL 'WALL OPENING PROTECTIVE MATERIALS" SYSTEM CLIV IN EACH NEW

JUNCTION BOX. USE METACAULK BOX GUARD INSERT. INSTALL IN ACCORDANCE

WITH THE UL LISTING.

3. MOUNT SWITCH 48" ABOVE FINISHED FLOOR.

DURABLE LABEL

ON WALL ABOVE

STOP SWITCH

STI MODEL STI-13000

NC (OR EQUAL)

POLYCARBONATE

COVER

SWITCH PLATE WITH

ONE 30MM

DIAMETER HOLE.

EATON PUSH BUTTON

STOP SWITCH MODEL

10250T (OR EQUAL).

LIFT HERE

EMERGENCY GAS SHUTOFF

COMBUSTION

AIR DISCHARGE

DUCT INTO

BUILDING

EXISTING EGRESS

DOOR

EXISTING ROLL-UIP DOOR TO MECHANICAL ROOM

BOILER INTAKE

DUCT INTO

BUIDLING

OFFSET COMBUSTION AIR DUCTWORK

FROM WINDOW ABOVE AND INSTALL THE

DUCT WORK ABOVE THE INTAKE DUCTS

PROVIDE INTAKE FITTING

PER MANUFACTURER'S

REQUIREMENTS

PROVIDE COMBUSTION AIR

DISCHARGE FITTING PER

MANUFACTURER'S

REQUIREMENTS

DUCT INTO

BUILDING

LIBRARY LANE DRIVE GRADE

SERVICE ALLEY

EXISTING

RETAINING WALL

4FT7FT

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

FINAL REVIEW

SET

SCO #25-29532-01A

MECHANICAL -

DETAILS

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LN, DALLAS, NC 28035

M7.1

FFR

NJH

11/07/2025

NTS

DUCT SUPPORT DETAIL

NTS

INDOOR EQUIPMENT PAD DETAIL

NTS

INLINE PUMP INSTALLATION DETAIL

NTS

PIPE HANGER DETAIL - INDIVIDUAL

NTS

PIPING DRAIN VALVE CONNECTION DETAIL

NTS

EQUIPMENT GAS PIPING CONNECTION DETAIL

NTS

GAS FIRED BOILER PIPING DETAIL

NTS

BOILER CONDENSATE DRAIN DETAIL

NTS

END OF MAIN STEAM TRAP DETAIL

NTS

BOILER INTAKE AND VENT DUCTWORK SUPPORT DETAIL

NTS

HVAC EMERGENCY STOP SWITCH DETAIL

NTS

BOILER EXHAUST EXTERIOR DUCT ROUTING DETAIL

MAXIMUM LENGTH FROM METER TO EQUIPMENT: 125'

2018 NORTH CAROLINA FUEL GAS CODE

TABLE 402.4(5) SCH 40 METALLIC PIPE

INLET PRESSURE 2 P.S.I.

FIRST FLOOR

B-1

1,500 MBTU

1" NG

GAS METER LOCATED ON

THE EXTRIOR OF THE

BUILDING NEXT TO THE

ENTRY WAY STAIRWELL.

1" @ 2 P.S.I.

79 FT EPL - 1,500 MBTU

GAS PRESSURE

REDUCING

REGULATOR

(2 P.S.I. TO 0.5 P.S.I.)

(TYPICAL)

B-2

1,500 MBTU

1" NG

EXTERIOR - ON GRADE

NOTE:

PROVIDE DIELECTRIC FITTINGS BETWEEN DISSIMILAR METALS

SYSTEM CONNECTION

(CONNECT TO SIDE OR

BOTTOM OF MAIN

HEADER)

REDUCER

TO DRAIN

HIGH

CAPACITY

VENT

AIR SEPARATOR

PRESSURE REDUCING VALVE

GLOBE VALVE

AS-1

AIR CHARGING VALVE

(PRESSURIZE DRY TANK

EQUAL TO FILL VALVE

PRESSURE)

ET-1

DRAIN VALVE W/

HOSE CONNECTION

PROVIDE VALVE IN

ACCESIBLE

LOCATION FROM THE

FLOOR

LOW CAPACITY AIR

VENT B&G NO. 87

EXPANSION TANK

PRESSURE GAUGE W/

NEEDLE VALVE

H W

S

2 1/2" HWS2 1/2" HWS2 1/2" HWS

2 1/2" HWS

1" DOMESTIC COLD WATER

MAKE-UP LINE BY P.C. TIE INTO

EXISTING MAKE-UP WATER LINE

TS

TS TS

FSFS

AFAF

BOILER

B-1

BOILER

B-2

H W

S

/2

H W

S

T&P RELIEF VALVE

BY BOILER MFGR.

RUN FULL SIZE LINE

TO FLOOR

(TYPICAL)

2 1/2" HWS

2 1/2" HWR

/2

2 1/2" HWR

2 1/2" HWR

TO EXISTING HEATING

HOT WATER

SECONDARY PUMPS:

P-1 & P-2

2 1/2" HWS

2 1/2" HWR

HEATING HOT

WATER PRIMARY

PUMP: HHWP-1

REFER TO DETAIL ON

SHEET M7.1 FOR INLINE

PUMP DETAIL

/2

H W

R

MECH ROOM FLOOR

/2

H W

R

EXISTING TO REMAIN NEW CONSTRUCTION SCOPE

PROVIDE VALVE

IN ACCESIBLE

LOCATION FROM

FLOOR

NTS

NATURAL GAS RISER DIAGRAM

C O N S U L T I N G E N G I N E E R S

413 DALTON AVENUE, SUITE A

CHARLOTTE, NC 28206 • 704-295-4263

NC LICENSE NO.: F-1533

AME PROJECT NO.:

Y S T A N D A R D

A C A D

B L O C K S T

IT

L E

B L O C K

IN

F O N e w

T B x .d w g

:2 :1

A M

B ri a n

E lb e rt s o n

Drawing No.

Drawing Title

Issues / Revisions

Checked by

Seals

Drawn by

Scale

Job No.

Drawing Info

AS SHOWN

24064

Project

24064

Issue Date

FINAL REVIEW

SET

SCO #25-29532-01A

MECHANICAL - PIPING

DIAGRAMS

GASTON COLLEGE

ROBINSON CLASSROOM

BUILDING HEATING HOT

WATER UPGRADES

250 LIBRARY LN, DALLAS, NC 28035

M7.2

FFR

NJH

11/07/2025

NTS

HEATING HOT WATER PIPING DIAGRAM

ABBREVIATIONS

DESCRIPTIONTYPE

A

AC

AF

AFC

AFF

AFG

BFC

C

EF

EC

ETBD

ETR

ETBR

EWC

FA

FAAP

FACP

AMPERE

ALTERNATING CURRENT

AMPERE FRAME

ABOVE FINISHED COUNTER

ABOVE FINISHED FLOOR

ABOVE FINISHED GRADE

BELOW FINISHED CEILING

CONDUIT

EXHAUST FAN

ELECTRICAL CONTRACTOR

G OR GND

GF OR GFI

KVA

KW

EXISTING TO BE DEMOLISHED

EXISTING TO REMAIN

EXISTING TO BE RELOCATED

ELECTRIC WATER COOLER

FIRE ALARM

FIRE ALARM ANNUNCIATOR PANEL

FIRE ALARM CONTROL PANEL

GROUND

GROUND FAULT INTERRUPTER

KILOVOLT AMPERES

KILOWATTS

AIC AMPERE INTERRUPTING CURRENT

AMP AMPERE

ARA AREA OF RESCUE ASSISTANCE

AT AMPERE TRIP

AWG AMERICAN WIRE GAUGE

CCT CIRCUIT

CCT BRKR CIRCUIT BREAKER

CR CARD READER

CT CURRENT TRANSFORMER

FPN FUSE/TRIP PER NAMEPLATE

FVNR FULL VOLTAGE NON-REVERSING

HID HIGH INTENSITY DISCHARGE

HOA HAND OFF AUTO

IG ISOLATED GROUND

INTERCOM INTERCOMMUNICATION

J-BOX JUNCTION BOX

GC GENERAL CONTRACTOR

CLG CEILING

GEN GENERATOR

ATS AUTOMATIC TRANSFER SWITCH

BET BUILDING ENTRANCE TERMINAL

MCB

MLO

NEC

Ø OR PH

R

REF

RTU

UON

V

W

WP

MAIN CIRCUIT BREAKER

MAIN LUG ONLY

PHASE

RELOCATED DEVICE

REFRIGERATOR

ROOFTOP UNIT

UNLESS OTHERWISE NOTED

VOLT(S)

WATTS OR WIRE

WEATHERPROOF

P POLE

MCC MOTOR CONTROL CENTER

MD MOTION DETECTOR

MIC MICROPHONE

MOCP MAXIMUM OVERCURRENT PROTECTION

NATIONAL ELECTRICAL CODE

N OR NEUT NEUTRAL

NTS NOT TO SCALE

OC ON CENTER

OL OVERLOAD

PA PUBLIC ADDRESS

PB PUSHBUTTON SWITCH

PNL PANELBOARD

RVNR REDUCED VOLTAGE NON-REVERSING

SPD SURGE PROTECTION DEVICE

SWBD SWITCHBOARD

TTB TELEPHONE TERMINAL BOARD

TC TIME CLOCK

TS TIME SWITCH

TYP TYPICAL

UNO UNLESS NOTED OTHERWISE

VFD VARIABLE FREQUENCY DRIVE

VSD VARIABLE SPEED DRIVE

XFMR TRANSFORMER

Z IMPEDANCE

WG WIRE GUARD

PC PLUMBING CONTRACTOR

SPKR SPEAKER

MC MECHANICAL CONTRACTOR

MCA MINIMUM CIRCUIT AMPACITY

SOG SLAB ON GRADE

LV LOW VOLTAGE

MSB MAIN SWITCH BOARD

NIC NOT IN CONTRACT

ABBREVIATIONS

DESCRIPTIONTYPE

IM ICE MAKER

MW MICROWAVE

A. ALL WORK MUST CONFORM TO THE LATEST NFPA, 2020 NATIONAL ELECTRICAL CODE,

THE LATEST STATE CODE, & THE LATEST LOCAL AUTHORITY REQUIREMENTS.

B. THE CONTRACTOR MUST VISIT THE PREMISES AND THOROUGHLY FAMILIARIZE

THEMSELVES WITH ALL DETAILS OF THE WORK AND WORKING CONDITIONS. VERIFY ALL

FIELD CONDITIONS INCLUDING LOCATION OF UTILITY LINES, STRUCTURES, AND ADVISE

THE ENGINEER OF ANY DISCREPANCY THAT MAY PREVENT OR HINDER THE SPECIFIED

WORK FROM BEING COMPLETED.

C. THE CONTRACTOR MUST STUDY THE STRUCTURE AND FINISH CONDITIONS AFFECTING

THEIR WORK AND MUST COORDINATE THEIR WORK ACCORDINGLY. THE CONTRACTOR

MUST PROVIDE ALL ACCESSORIES, HANGERS, AND ANCHORS AS NECESSARY TO MEET

SUCH CONDITIONS WITHOUT ANY ADDITIONAL COST TO THE OWNER.

D. PRIOR TO ACCOMPLISHING ANY WORK IN ANY AREA, ALL WORK MUST BE PLANNED AND

COORDINATED WITH OTHER TRADES AND THE OWNER. THE CONDUIT ROUTING MUST

BE COORDINATED WITH DUCT WORK, AND OTHER OBSTACLES SO AS TO PROVIDE THE

MOST EFFICIENT AND AESTHETICALLY PLEASING INSTALLATION.

E. PROPERLY SUPPORT ALL WORK AND EQUIPMENT INSTALLED UNDER THIS CONTRACT.

STUDY ALL DRAWINGS, MANUFACTURER'S INSTRUCTIONS, UL LISTINGS, AND CATALOG

DATA TO DETERMINE HOW EQUIPMENT, ACCESSORIES, AND RELATED ITEMS ARE TO BE

SUPPORTED, MOUNTED, OR SUSPENDED. PROVIDE ALL BOLTS, INSERTS, BRACKETS,

SPACERS, STRUCTURAL SUPPORTS, AND ACCESSORIES FOR PROPER SUPPORT OF

EQUIPMENT FURNISHED UNDER THIS CONTRACT.

F. PROVIDE GREEN EQUIPMENT GROUNDING CONDUCTOR WITH ALL FEEDER AND BRANCH

CIRCUITS.

G. MOUNTING HEIGHTS INDICATED ARE TO THE CENTER OF THE DEVICE, OR EQUIPMENT

UNLESS NOTED OTHERWISE. CONTRACTOR MUST NOT INSTALL J-BOXES, OUTLETS,

DEVICES, ETC. BACK TO BACK FOR NEW OR RENOVATION WORK.

H. DO NOT SCALE THESE PLANS.

I. COORDINATE MOUNTING HEIGHT AND LOCATION OF ALL WALL MOUNTED EQUIPMENT

WITH ARCHITECTURAL ELEVATIONS.

J. THE ELECTRICAL DRAWINGS ARE DIAGRAMMATIC. THE ELECTRICAL INSTALLATION MUST

BE FULLY COORDINATED WITH ALL OTHER TRADES PRIOR TO ROUGH-IN BETWEEN THE

ELECTRICAL WIRING AND DEVICES AND MECHANICAL WORK.

K. RECEPTACLES LOCATED WITHIN 6'-0" OF A WATER SOURCE MUST BE GFI TYPE.

L. INSPECTION MUST BE COMPLETED BY THE SCO ELECTRICAL INSPECTOR. CONTRACTOR

MUST COORDINATE ALL INSPECTIONS WITH THE SCO INSPECTOR. INSPECTIONS MUST

BE COMPLETED MONDAY THROUGH FRIDAY BETWEEN 8AM AND 5PM.

GENERAL NOTES

ELECTRICAL ENERGY CODE SUMMARY

(2018 NC ENERGY CODE)

ELECTRICAL SYSTEM AND EQUIPMENT:

METHOD OF COMPLIANCE: N/A

STATE ENERGY CODE: (X) PRESCRIPTIVE ( ) PERFORMANCE

LUMINAIRE SCHEDULE:

LAMP TYPE REQUIRED IN LUMINAIRE

NUMBER OF LAMPS IN LUMINAIRE

BALLAST TYPE USED IN THE LUMINAIRE

NUMBER OF BALLASTS IN LUMINAIRE

TOTAL WATTAGE PER LUMINAIRE

TOTAL INTERIOR WATTAGE ALLOWED VS. SPECIFIED

EXTERIOR LIGHTING ZONE

TOTAL EXTERIOR WATTAGE ALLOWED VS. SPECIFIED

EXTERIOR LUMINAIRES >100 WATTS MUST HAVE A

MINIMUM EFFICACY OF 60 LUMENS/WATT

PROJECT TOTAL SQUARE FOOTAGE:

STATE ENERGY CODE ADDITIONAL PRESCRIPTIVE COMPLIANCE SUMMARY:

MUST COMPLY WITH ONE OF THE FOLLOWING SECTIONS:

( ) 506.2.1 MORE EFFICIENT MECHANICAL EQUIPMENT

( ) 506.2.2 REDUCED LIGHTING POWER DENSITY

( ) 506.2.3 ENERGY RECOVERY VENTILATION SYSTEMS

( ) 506.2.4 HIGHER EFFICIENCY SERVICE WATER HEATING

( ) 506.2.5 ON-SITE SUPPLY OF RENEWABLE ENERGY

( ) 506.2.6 AUTOMATIC DAYLIGHTING CONTROL SYSTEM

CALCULATION ABOVE INCLUDES REDUCED LIGHTING POWER DENSITY

**NO NEW LIGHTING IS PROVIDED IN THIS PROJECT. **

N/A N/A N/A N/A N/A

N/A VS N/A

N/A

N/A VS N/A

1936.99 SQFT

TYPE DESCRIPTION

DUPLEX CONVENIENCE RECEPTACLE, 20A, 120V, MOUNT 18" AFF, UON. SUBSCRIPT 'GFI' DENOTES GROUND FAULT

INTERRUPTING TYPE RECEPTACLE.

EXISTING JUNCTION BOX

SWITCH, 20A, 120/277V, REFERENCE NEW WORK PLAN FOR LOCATION.

NO SUBSCRIPT DENOTES SINGLE POLE SWITCH.

JJ

EQUIPMENT CONNECTION, AS NOTED. REFER TO EQUIPMENT CONNECTION SCHEDULE.

XXX

EXISTING SURFACE MOUNTED PANELBOARD

DESIGNATION AS NOTED. REFER TO PANEL

SCHEDULES FOR ADDITIONAL INFORMATION.

T EXISTING PAD MOUNTED TRANSFORMER. REFER TO RISER DIAGRAM FOR ADDITIONAL

INFORMATION.

SPD EXISTING SURGE PROTECTION DEVICE WALL MOUNTED ADJACENT TO EQUIPMENT BEING

PROTECTED. 'TVSS' DENOTES TRANSIENT VOLTAGE SURGE SUPPRESSION DEVICE AND CAN

BE USED INTERCHANGEABLY WITH 'SPD.'

SYMBOL LEGEND

(NOTE: NOT ALL SYMBOLS ARE NECESSARILY USED ON PLANS)

EXISTING FIRE ALARM CONTROL PANEL

FACP

EXISTING FIRE ALARM MANUAL PULL STATION

EXISTING FIRE ALARM SYSTEM CEILING MOUNTED SMOKE DETECTORSD

F

EQ

GFI

EXISTING FIRE ALARM AUDIO/VISUAL APPLIANCE, WALL MOUNTEDF

LIGHTING CONTROL SYSTEM, LOCAL DUAL TECHNOLOGY OCCUPANCY SENSOR, CEILING MOUNTED AT 96" AFF TO UNISTRUT SUSPENDED FROM EXISTING STRUCTURE. PROVIDE POWER PACK AND WIRING AS REQUIRED. PROVIDE AND INSTALL PER

MANUFACTURER'S RECOMMENDATIONS.

OS

TWO SWITCHES IN COMMON BOX AND COMMON FACEPLATE. REFERENCE NEW WORK PLAN FOR LOCATION.

SEISMIC AND WIND REQUIREMENTS

FOR ELECTRICAL SYSTEMS

INFORMATION FOR NCSBC 2018/ASCE 7-10

A. SEE EQUIPMENT SCHEDULES AND DETAILS FOR SPECIFIC COMPONENT IMPORTANCE FACTOR

DESIGNATIONS.

A. USE APPLICABLE TABLE BELOW TO DETERMINE SEISMIC RESTRAINT REQUIREMENTS FOR EACH

ELECTRICAL COMPONENT.

B. FOR ALL COMPONENTS REQUIRING SEISMIC RESTRAINT, THE COMPONENT SUPPORTS AND

ATTACHMENTS MUST BE DESIGNED BY A REGISTERED DESIGN PROFESSIONAL.

C. WHERE SEISMIC RESTRAINT IS REQUIRED, HOUSEKEEPING PADS NEEDED FOR THE INSTALLATION OF EQUIPMENT UNDER THIS CONTRACT MUST BE DESIGNED BY THE SEISMIC ENGINEER. DO NOT

POUR ANY HOUSEKEEPING PADS PRIOR TO THE RECEIPT OF THE SEISMIC SUBMITTAL.

D. SEISMIC RESTRAINT FOR CONDUIT MUST BE SHOWN ON LAYOUT DRAWINGS SHOWING SPECIFIC

RESTRAINT LOCATIONS ALONG WITH ACCOMPANYING DETAILS AND CALCULATIONS.

COMPONENT

CERTIFICATION

NOT REQUIRED

NOT REQUIRED

NOT REQUIREDCOMPONENT SUPPORTS

WALL MOUNTED

COMPONENT

IDENTIFICATION

SEISMIC

RESTRAINT

REQUIREMENT

ASCE 7-10

REFERENCE

1.0

COMPONENT IMPORTANCE FACTOR (Ip)

SEISMIC DESIGN CATEGORIES C

NOT REQUIREDSUSPENDED EQUIPMENT

TRAPEZED CONDUIT NOT REQUIRED

SINGLE CONDUIT NOT REQUIRED

REQUIRED

SEISMIC

RESTRAINT

REQUIREMENT

ASCE 7-10

REFERENCE

>2"

(SEE NOTE 1)

1.5

13.1.4.3

13.1.4.3

13.1.4.3

13.1.4.3

13.1.4.3

13.2.2

13.6.5

13.1.4.3

13.1.4.3

13.6.8.2b

13.2.2

GENERAL NOTES:

A. RESTRAINT IS NOT REQUIRED IF SUSPENDED 12 IN. OR LESS FROM THE STRUCTURE, IF THE

HANGERS ARE DETAILED TO AVOID SIGNIFICANT BENDING OF THE HANGERS AND THEIR

ATTACHMENTS, AND IF PROVISIONS ARE MADE FOR CONDUIT TO ACCOMMODATE EXPECTED

DEFLECTIONS.

B. COMPONENT CERTIFICATION MUST BE SUPPLIED BY THE EQUIPMENT MANUFACTURERS AT TIME OF

SUBMITTAL FOR REVIEW BY ENGINEER OF RECORD.

TC-8-CH13-48-R8

13.6.8.3.1

RESTRAIN IF ANY

CONDUIT ON TRAPEZE

>2" RESTRAIN IF

TOTAL WEIGHT OF

CONDUIT ON TRAPEZE

> 10 LBS/FT

(SEE NOTE 1)

RESTRAIN ALL

RESTRAIN ALL

RESTRAIN ALL

480V, 3Ø

FED FROM

AHU-X

AHU-X

1/2" HIGH LETTERING FOR

EQUIPMENT NAME

1/4" HIGH LETTERING FOR

REMAINING TEXT

EQUIPMENT NAME

1/8" THICK WHITE PLASTIC WITH BLACK

LETTERS PER SPECIFICATIONS

480V, 3Ø

FED FROM

EQUIPMENT VOLTAGE

FASTEN WITH BRASS SCREWS

EQUIPMENT SOURCE

(PANEL & CIRCUIT)

SYSTEM NO. C-AJ-1001

MAX…