260-B6260-003 MTS Replace Rooftop Unit_DRAWINGS.pdf

NORTHERN VIRGINIA COMMUNITY COLLEGE

MTS REPLACE ROOF TOP UNIT

10500 BATTLEVIEW PKWY, MANASSAS, VA 20109

A/E TERM CONTRACT #: VCCS-04132023-E

PROJECT #: 260-B6260-003

DESCRIPTION OF WORK

THE SCOPE OF WORK INCLUDES THE REMOVAL AND REPLACEMENT OF ROOFTOP UNIT RTU-1 SERVING AN EXISTING TWO STORY COMMUNITY COLLEGE BUILDING. THE REPLACEMENT UNIT IS PROVIDED WITH A CURB ADAPTER DESIGNED TO INTERFACE WITH THE EXISTING ROOF CURB, MAINTAINING COMPATIBILITY WITH THE EXISTING CURB DIMENSIONS AND ACCOMMODATING COMPARABLE EQUIPMENT WEIGHT. THE RTU-1 IS REMOVED IN ITS ENTIRETY AND REPLACED WITH A NEW UNIT OF EQUIVALENT PERFORMANCE CAPACITY, COMPLETE AND TURNKEY. THE REPLACEMENT UNIT UTILIZES A REFRIGERANT THAT COMPLIES WITH CURRENT FEDERAL REGULATORY REQUIREMENTS AND CORRESPONDING ELECTRICAL MANUFACTURER'S RECOMMENDATIONS , WHILE MAINTAINING FUNCTIONAL EQUIVALENCY TO THE EXISTING SYSTEM.

GENERAL INFORMATION

PRIMARY CONTACTS

VCCS - NORTHERN VIRGINIA COMMUNITY

COLLEGE

FACILITIES PLANNING AND SUPPORT SERVICES

8333 LITTLE RIVER TURNPIKE, ROOM #311

ANNADALE, VA 22003-3796

PHONE: 571-888-4456

ENGINEER

WSP USA, INC

MICHAEL HATHORNE

1300 N 17TH ST, SUITE 1000

ARLINGTON, VA 22209

PHONE: 703-209-9379

ASBESTOS DISCLOSURE STATEMENT

AN ASBESTOS INSPECTION WAS NOT PERFORMED BECAUSE ALL PORTIONS OF THE EXISTING BUILDING THAT MAY BE AFFECTED

BY THE WORK WERE ORIGINALLY CONSTRUCTED AFTER JANUARY 1, 1985.

USE OF NEW ASBESTOS-CONTAINING MATERIALS WITHIN THE PROJECT SCOPE IS PROHIBITED.

LEAD DISCLOSURE STATEMENT

AN INSPECTION TO IDENTIFY LEAD CONTAINING OR COATED BUILDING COMPONENTS HAS NOT BEEN CONDUCTED BECAUSE THE BECAUSE THE BUILDING WAS CONSTRUCTED AFTER JANUARY 1, 1985 AND THE OWNER HAS NO KNOWLEDGE OF LEAD CONTAINING OR COATED BUILDING COMPONENTS IN THE BUILDING. IT IS THE CONTRACTOR'S RESPONSIBILITY TO COMPLY WITH ALL VIRGINIA OCCUPATIONAL SAFETY AND HEALTH (VOSH) REGULATIONS AS THEY PERTAIN TO EMPLOYEE EXPOSURES TO LEAD. ALL LEAD AND

LEAD-COATED BUILDING COMPONENTS SHALL BE RECYCLED TO THE EXTENT POSSIBLE.

NEW WORK NOTES

HPBA COMPLIANCE STATEMENT

IN ACCORD WITH THE HIGH PERFORMANCE BUILDINGS ACT, THE BUILDING IS EXEMPT FROM COMPLIANCE BECAUSE THE COST OF

RENOVATIONS DOES NOT EXCEED 50% OF THE VALUE OF THE BUILDING.

VECC COMPLIANCE STATEMENT

IN ACCORD WITH THE VIRGINIA ENERGY CONSERVATION CODE (VECC), THE BUILDING SHALL COMPLY WITH VECC SECTIONS C402

THROUGH C405 AND C408. THE FOLLOWING SECTIONS ARE NOT APPLICABLE: C402 AND C404.

PROJECT DATA

GENERAL INFORMATION

NAME OF PROJECT - NVCC MTS REPLACE ROOF TOP UNIT

ADDRESS - 10500 BATTLEVIEW PKWY

MANASSAS, VA 20109

OWNER OR AUTHORIZED AGENT - VIRGINIA COMMUNITY COLLEGE SYSTEM

CONSTRUCTION TYPE - IIB NONCOMBUSTIBLE, UNPROTECTED

USE GROUP - MIXED USE, NON-SEPARATED, B, BUSINESS

OCCUPANCY - BUSINESS

NUMBER OF STORIES - 2 STORIES

BUILDING AREA - 21,294 GSF

WORK AREA - 660 GSF

BUILDING HEIGHT - 24' - 0" (APPROXIMATE)

CODES LISTED BELOW SHOW CODES APPLICABLE TO BASIS-OF-DESIGN. CONTRACTOR SHALL COMPLY WITH ALL APPLICABLE

CODES, INCLUDING LOCAL AMMENDMENTS.

APPLICABLE CODES

BUILDING CODE - VIRGINIA UNIFORM STATEWIDE BUILDING CODE 2021

- VIRGINIA CONSTRUCTION CODE 2021 (VCC)

- VIRGINIA EXISTING BUILDING CODE 2021 (VEBC) - LEVEL 01

ENERGY CODE - VIRGINIA ENERGY CONSERVATION CODE 2021

MECHANICAL CODE - VIRGINIA MECHANICAL CODE 2021

PLUMBING CODE - VIRGINIA PLUMBING CODE 2021

FIRE CODE - VIRGINIA STATEWIDE FIRE PREVENTION CODE 2021 (VSFPC)

- INTERNATIONAL FIRE CODE 2021 (IFC)

ELECTRICAL CODE - NFPA 70/NATIONAL ELECTRICAL CODE, 2020 EDITION

FIRE ALARM CODE - NFPA 72, NATIONAL FIRE ALARM AND SIGNALING CODE 2021

ADDITIONAL CODES - NFPA 80, STANDARD FOR FIRE DOORS AND OTHER OPENING PROTECTIVE 2021

- VIRGINIA CONSTRUCTION AND PROFESSIONAL SERVICES MANUAL 2026. REV 0 - 7/31/2026

ACCESSIBILITY CODE - ADA 90-Title II: 2010 ASAD Chapter 2 (Scoping) & ICC A117.1-2017 Chapters 1, 3-11 (Technical)

DESIGN CRITERIA

COORDINATES

LATITUDE/LONGITUDE - 38°80'63.7"N , 77°51'77.3."W

ELEVATION

FEET ABOVE SEA LEVEL - 230'

ASHRAE SUMMER DESIGN CONSIDERATIONS

0.4% DB MWB - 93.0°/74.8°

ASHRAE WINTER DESIGN CONSIDERATIONS

99.6% DB - 11.1°

BUILDING SPACE DESIGN TEMPERATURES

SUMMER DB - 75°

WINTER DB - 70°

ABBREVIATIONS

ATTN ATTENTION

B BUSINESS

CPSM CONSTRUCTION & PROFESSION SERVICES

MANUAL

DWGS DRAWINGS

FT FEET

GC GENERAL CONTRACTOR

MAX MAXIMUM

MIN MINIMUM

NEC NATIONAL ELECTRICAL CODE

SF SQUARE FEET

VEBC VIRGINIA EXISTING BUILDING CODE

VCC VIRGINIA CONSTRUCTION CODE

VCCS VIRGINIA COMMUNITY COLLEGE SYSTEM

ADA COMPLIANCE STATEMENT

IN ACCORD WITH ADA STANDARDS FOR ACCESSIBLE DESIGN, THE BUILDING SHALL COMPLY WITH SECTION 203.9 FOR FULLY

ACCESSIBLE EMPLOYEE WORK AREAS.

LOCATION MAP

VICINITY MAP

1.

2.

3.

4.

5.

6.

7.

8.

9.

A.

REVIEW THE DRAWINGS FOR NOTES, DIMENSIONS, ETC., AND COORDINATE WITH OTHER TRADES INVOLVED.

CONTRACTORS SHALL VERIFY LAYOUT AND BE RESPONSIBLE FOR ALL MEASUREMENTS OF ALL EXISTING CONDITIONS BEFORE COMMENCING WORK AND SHALL NOTIFY OWNER AND/OR ENGINEER IF A CONDITION EXISTS THAT PREVENTS THE CONTRACTOR FROM ACCOMPLISHING THE

INTENT OF THE DRAWINGS.

CONTRACTOR TO PROVIDE A FIRE WATCH ANY TIME THE FIRE ALARM SYSTEM IS IMPAIRED. HOURLY BUILDING INSPECTIONS AND ANY ADDITIONAL REQUIREMENTS MADE BY THE STATE FIRE MARSHAL SHALL BE REQUIRED. COORDINATE WITH NVCC PROJECT MANAGER.

COORDINATE IMPAIRMENTS TWO WORK DAYS IN ADVANCE, MINIMUM.

HOT WORKS PERMIT SHALL COORDINATED TWO WORK DAYS IN ADVANCE, MINIMUM. COORDINATE WITH NVCC PROJECT MANAGER.

SUBMIT 1 ELECTRONIC COPY OF PRODUCT AND CAPACITY DATA FOR EQUIPMENT TO THE ENGINEER AS DIRECTED BEFORE ORDERING

EQUIPMENT. COPIES SHALL BE DELIVERED TO THE FOLLOWING: OWNER AND ENGINEER.

THOUGH SOME OFFSETS AND TRANSITIONS ARE SHOWN IN PIPING AND SHEET METAL TO HELP INDICATE THE PHYSICAL RELATIONSHIP BETWEEN THEM, IT IS NOT THE INTENT OF THE DRAWING TO SHOW ALL PIPING AND SHEET METAL OFFSETS AND TRANSITIONS REQUIRED. THE CONTRACTOR SHALL FULLY COORDINATE THE MECHANICAL WORK INTERNALLY AND WITH ALL TRADES TO PROVIDE COMPLETE & OPERABLE

SYSTEMS WITHOUT INTERFERENCES.

CONTRACTOR SHALL START-UP AND DEMONSTRATE ALL NEW EQUIPMENT FOR OWNER/ENGINEER AND/OR OWNER'S OPERATING PERSONNEL.

CONTRACTOR SHALL DEMONSTRATE SATISFACTORY PERFORMANCE, ADJUST AND CORRECT OPERATIONS AS REQUIRED FOR PROPER

PERFORMANCE, CLEAN AND LUBRICATE EACH SYSTEM.

INSTALL, TEST AND START-UP IN ACCORDANCE WITH MANUFACTURER'S INSTRUCTIONS.

FURNISH AND INSTALL ALL EQUIPMENT WITH THE FOLLOWING:

ALL LOW VOLTAGE CONTROL DEVICES AND THEIR RELATED WIRING. LOW VOLTAGE IS DEFINED AS ANY VOLTAGE SYSTEM THAT IS AT OR LOWER THAN THE 120-VOLT, SINGLE PHASE, 60 HERTZ SYSTEM, EXCLUDING FIRE ALARM, SECURITY, AND OTHER

COMMUNICATIONS TYPE SYSTEMS.

MT

AGENCY REPRESENTATIVES

NAME: MIKE JONES, MBA

TITLE: CAPITAL OUTLAY PROGRAM MANAGER

DEPARTMENT: VIRGINIA'S COMMUNITY

COLLEGES - SYSTEM OFFICE

ADDRESS: 300 ARBORETUM PLACE, SUITE 200

RICHMOND, VA 23236

PHONE: 832-428-4678

EMAIL: MJONES@VCCS.EDU

FOR VIRGINIA COMMUNITY COLLEGE SYSTEM (VCCS)

NVCC INTERSECTION

SUDLEY RD & CAMPUS DR

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

ARLINGTON VA, 22209

(202) 362-2800

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

N.T.S.

MEP Engineer:

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

US0027294.0531

260-B6260-003

APT MLH

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

COVER SHEET

G-001

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

DRAWING SHEET LIST

Sheet Number Sheet Name

G-001 COVER SHEET

G-002 SITE PLAN

ME-001 LEGENDS AND ABBREVIATIONS

ME-002 SCHEDULES AND CALCULATIONS

ME-003 SCHEDULES

ME-101 OVERALL PLAN

ME-201 ROOF PLANS

ME-301 PARTIAL FLOOR PLANS

ME-501 RISERS

ME-801 CONTROLS AND DETAILS

Grand total: 10

LOCATION MAP

VICINITY MAP

MT NVCC INTERSECTION

SUDLEY RD & CAMPUS DR

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

09.04.2026

ISSUE FOR BID 09/04/2026

M CONTRACT #: V

ROJECT #: 260-B6

ISSUE FOR BID

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BATTLEVIEW PARKWAY - ROUTE 2740

CHAIN LINK FENCE CHAIN LINK FENCE

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LOT 2

144,130 SQ. FT. OR

3.30876 ACRES

N67°38'48"E

LINDEN-BATTLEFIELD LLC

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COMMONWEALTH OF VIRGINIA

STATE BOARD OF COMMUNITY COLLEGES

D.B. 428 PG. 481

GPIN: 7697-39-2308

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10 SPACES

12 SPACES

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

ARLINGTON VA, 22209

(202) 362-2800

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

N.T.S.

MEP Engineer:

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

US0027294.0531

260-B6260-003

APT MLH

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

SITE PLAN

G-002

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

1/16" = 1'-0"

SITE PLAN

1/16" = 1'0"

016' 8'

SCALE: 1/16" = 1' - 0"

GRAPHIC SCALE

16' 32' 48'

N

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

09.04.2026

ISSUE FOR BID 09/04/2026

ABBREVIATIONS - MECHANICAL

AHU AIR HANDLING UNIT

BHP BRAKE HORSE POWER

BTU BRITISH THERMAL UNIT

CFM CUBIC FEET PER MINUTE

DB DRY BULB

DN DOWN

(E) EXISTING TO REMAIN

EAT ENTERING AIR TEMPERATURE

EDB ENTERING DRY BULB

EF EXHAUST FAN

EHC ELECTRIC HEATING COIL

EWB ENTERING WET BULB

EWT ENTERING WATER TEMPERATURE

°F DEGREES FAHRENHEIT

FLA FULL LOAD AMPS

FT FEET

GPM GALLONS PER MINUTE

HC HEATING COIL

HP HORSE POWER

KW KILOWATT

LAT LEAVING AIR TEMPERATURE

LBS POUNDS

MAT MIXED AIR TEMPERATURE

MAX MAXIMUM

MBH THOUSAND BTU PER HOUR

MECHANICAL LEGEND & ABBREVIATIONS

DUCTWORK LEGEND

RECTANGULAR SUPPLY DUCT UP

RECTANGULAR SUPPLY DUCT DOWN

RECTANGULAR RETURN OR EXHAUST

DUCT UP

RECTANGULAR RETURN OR EXHAUST

DUCT DOWN

S DUCT SMOKE DETECTOR

CONTROLS LEGEND

PIPING LEGEND

ELBOW TURNED UP

ELBOW TURNED DOWN

CONDENSATE DRAIN

D D

18x12 DUCT SIZE (CLEAR INSIDE DIMENSION)

FIRST FIGURE INDICATES PLAN SIZE

MFS MAXIMUM FUSE SIZE

MIN MINIMUM

MOCP MAXIMUM OVERCURRENT PROTECTION

(N) NEW

NIC NOT IN THIS CONTRACT

NO NORMALLY OPEN

NTS NOT TO SCALE

OBD OPPOSED BLADE DAMPER

PD PRESSURE DROP

PSI POUNDS PER SQUARE INCH (GAUGE)

PSIA POUNDS PER SQUARE INCH ABSOLUTE

RA RETURN AIR

RH RELATIVE HUMIDITY

RPM REVOLUTIONS PER MINUTE

RTU ROOFTOP UNIT

SA SUPPLY AIR

SF SUPPLY FAN

SP STATIC PRESSURE

SQFT SQUARE FEET

RD ROOF DRAIN

TYP TYPICAL

UON UNLESS OTHERWISE NOTED

VD VOLUME DAMPER

VFD VARIABLE FREQUENCY DRIVE

W/ WITH

WB WET BULB

(X) EXISTING TO BE DEMOLISHED

(300) CUBIC FEET OF AIR PER MINUTE OR GALLONS PER MINUTE

RACEWAY LEGEND

CONDUIT CONCEALED ABOVE CEILING OR WITHIN WALL

CONDUIT BELOW GRADE OR EMBEDDED WITHIN SLAB

CONDUIT UP

CONDUIT DOWN

CONDUIT STUBBED OUT WITH BUSHING

NOTE: PROVIDE PULLSTRING IN EACH EMPTY RACEWAY

CONDUIT STUBBED OUT AND CAPPED

NOTE: PROVIDE PULLSTRING IN EACH EMPTY RACEWAY

GROUNDING CONDUCTOR

PHASE CONDUCTOR(S)

ISOLATED GROUNDING CONDUCTOR

NEUTRAL CONDUCTOR

WIRING DEVICE LEGEND

DUPLEX RECEPTACLE OUTLET: 125V; WALL MOUNTED

DOUBLE DUPLEX RECEPTACLE OUTLET: 125V; WALL MOUNTED

POWER LEGEND

ATS, CPC, DPH, DPL, DSH, DSL, MCC OR

MS: SIZE APPROXIMATELY AS SHOWN.

DOUBLE LINE INDICATES FRONT.

SURFACE MOUNTED LPH, LRC, MP OR TC:

SIZE APPROXIMATELY AS SHOWN

RECESSED MOUNTED LPH, LRC, MP OR TC:

SIZE APPROXIMATELY AS SHOWN

SURFACE MOUNTED LP:

SIZE APPROXIMATELY AS SHOWN

RECESSED MOUNTED LP:

SIZE APPROXIMATELY AS SHOWN

STEP DOWN TRANSFORMER

GENERATOR

T F

G

AUTOMATIC TRANSFER SWITCH

HEAVY DUTY DISCONNECT SWITCH, FUSED TYPE

VFD WITHOUT DISCONNECTVFD

MOTOR CONNECTION

JUNCTION BOX, CEILING MOUNTEDJ

M

JUNCTION BOX, WALL MOUNTED

PULL BOX

CIRCUIT BREAKER

SWITCH AND FUSE

P B

J

CIRCUIT BREAKER IN ENCLOSURE

CURRENT TRANSFORMER COMPARTMENT AND KWH

METERM

TRANSFORMER

WR = WEATHER RESISTANTWR

GENERATOR IN WP ENCLOSURE

VFD WITH DISCONNECT, NOT PROVIDED UNDER

ELECTRICAL SCOPE

WIRING DEVICE SUBSCRIPT LEGEND

GFCI = GROUND FAULT CIRCUIT INTERRUPTER

WP = WEATHERPROOF

GFCI

WP

VFD

G

EQUIPMENT NAMING LEGEND

BUS

U

E

DPL

DSH

DSL

LP

A 1,3,5

CIRCUIT NUMBER(S)

FIRST OF THIS TYPE ON FLOOR

FLOOR LEVEL

ATS 2

MS

MP

MCC

LRC

TB

TC

- /N

NORTH, EAST, SOUTH OR WEST

DPH

LPH

T

PDU

O S

ATS AUTOMATIC TRANSFER SWITCH

BUS BUSWAY

DPH DISTRIBUTION PANEL 277/480V

DPL DISTRIBUTION PANEL 120/208V

DSH DISTRIBUTION SWITCHBOARD 277/480V

DSL DISTRIBUTION SWITCHBOARD 120/208V

LP BRANCH CIRCUIT PANELBOARD 120/208V

LPH BRANCH CIRCUIT PANELBOARD 277/480V

LRC LIGHTING RELAY CABINET

MCC MOTOR CONTROL CENTER

MP MECHANICAL EQUIPMENT PANELBOARD 120/208V

MS MAIN SWITCHBOARD

PDU POWER DISTRIBUTION UNIT

T TRANSFORMER

TB TELECOM BACKBOARD

TC TELECOM CABINET

E EMERGENCY LIFE SAFETY

O OPTIONAL STANDBY POWER

S LEGALLY REQUIRED STANDBY POWER

U UNINTERRUPTIBLE POWER SUPPLY

MPH MECHANICAL EQUIPMENT PANELBOARD 277/480V

ABBREVIATIONS

AFF ABOVE FINISHED FLOOR

AIC AMPERES INTERRUPTING CAPACITY

AF/AS AMPERE RATING OF FUSE/SWITCH

AT/AF AMPERE RATING OF CIRCUIT, BREAKER TRIP/FRAME

CKT CIRCUIT

EC EMPTY CONDUIT / ELECTRICAL CONTRACTOR

GND GROUND

IG ISOLATED GROUND

WP WEATHERPROOF

A AMPERES

AL ALUMINUM

C CONDUIT (GENERIC TERM FOR RACEWAY - PROVIDE AS SPECIFIED)

CB CIRCUIT BREAKER

CU COPPER

DWG DRAWING

GC GENERAL CONTRACTOR

JB JUNCTION BOX

KCMIL THOUSAND CIRCULAR MILS

KVA KILO-VOLT AMPERE

MCB MAIN CIRCUIT BREAKER

MLO MAIN LUGS ONLY

MTD MOUNTED

MTG MOUNTING

MTS MANUAL TRANSFER SWITCH

P POLE

PWR POWER

PH PHASE

ATS AUTOMATIC TRANSFER SWITCH

GFCI GROUND FAULT CIRCUIT INTERRUPTOR

MCC MOTOR CONTROL CENTER

MS MANUAL SWITCH

DPH-B1/1,3,5

EF-1-1

POWER SOURCE

MECHANICAL EQUIPMENT TAG

ELECTRICAL LEGEND & ABBREVIATIONS

LINEWEIGHTS LEGEND

EXISTING TO REMAIN

NEW WORK

REMOVED / DEMOLISHED

ABBREVIATIONS - MECHANICAL

(E) EXISTING TO REMAIN

HP HORSE POWER

KW KILOWATT

GENERAL LEGEND & ABBREVIATIONS

CT

1-1

EQUIPMENT

DESIGNATION

EQUIPMENT TYPE

EQUIPMENT

AND NUMBER

MISCELLANEOUS

NEW WORK

EXISTING WORK

EXISTING WORK TO BE REMOVED

(N) NEW

NTS NOT TO SCALE

TYP TYPICAL

UON UNLESS OTHERWISE NOTED

(X) EXISTING TO BE DEMOLISHED

(R) EXISTING TO BE RELOCATED

SHEET NOTE1 1

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

ARLINGTON VA, 22209

(202) 362-2800

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

N.T.S.

MEP Engineer:

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

US0027294.0531

260-B6260-003

MT MLH

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

LEGENDS AND

ABBREVIATIONS

ME-001

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

09.04.202609.04.2026

Multiple zone

RTU1

System name and number RTU1

Condition analyzed (impacts Ez, Vdz, Vpz and Vps) Heating

All zones are included in the VRP calculation Yes

Zone Name and Number

Occupancy Category

Zone Floor Area Are you using default value for zone population?

Zone Population

Zone Air Distribution

Effectiveness

Zone Outdoor Airflow

Zone Discharge

Airflow

Zone Primary Airflow

Zone Secondary Recirculation

Fraction Zone Primary Air

Fraction

Az Pz Ez Voz Vdz Vpz Er Ep (sq ft) (people) (cfm) (cfm) (cfm)

01-060 281 OPEN SPACE / CORRIDORS Corridors 700 Yes 0.00 0.80 52.50 1,100 330 0.50 0.30 01-070 281 TRAINING SUITE Classrooms (age 9 plus) 531 No 5.00 0.80 142.15 676 203 0.50 0.30 01-070 278 CORRIDOR Corridors 180 Yes 0.00 0.80 13.50 75 23 0.50 0.30 01-070 208 CORRIDOR Corridors 212 Yes 0.00 0.80 15.90 100 30 0.50 0.30 01-050 213-MENS RESTROOM 146 Yes 0.00 0.80 0.00 75 23 0.50 0.30 01-030 214-WOMENS RESTROOM 151 Yes 0.00 0.80 0.00 75 23 0.50 0.30 01-050 203-SECURITY ADMIN Office space 106 No 1.00 0.80 14.20 100 30 0.50 0.30 01-090 204-SKILL SOURCE Office space 842 No 12.00 0.80 138.15 1,350 405 0.50 0.30 01-080 206-WORKFORCE Office space 473 No 7.00 0.80 79.23 1,100 330 0.50 0.30 01-070 209-STORAGE CLOSET Storage rooms 60 Yes 0.00 0.80 9.00 50 15 0.50 0.30 01-110 215,218-SYSTEMIC SOLUTIONS Office space 450 No 5.00 0.80 65.00 500 150 0.50 0.30 01-110 216-STORAGE CLOSET Storage rooms 33 Yes 0.00 0.80 4.95 50 15 0.50 0.30 01-100 217-OFFICE Office space 126 No 1.00 0.80 15.70 200 60 0.50 0.30 01-050, 110 219 CORRIDOR Corridors 856 Yes 0.00 0.80 64.20 250 75 0.50 0.30 01-110 221-ROBOTIC STORAGE Storage rooms 277 Yes 0.00 0.80 41.55 150 45 0.50 0.30 01-100 222-ROBOTIC CLASSROOM Classrooms (age 9 plus) 535 No 18.00 0.80 305.25 1,200 360 0.50 0.30 01-010 229-CLASSROOM Classrooms (age 9 plus) 543 No 28.00 0.80 431.45 1,500 450 0.50 0.30 01-020 230-CLASSROOM Classrooms (age 9 plus) 543 No 25.00 0.80 393.95 1,500 450 0.50 0.30 01-030 231-CLASSROOM Classrooms (age 9 plus) 612 No 28.00 0.80 441.80 1,500 450 0.50 0.30 01-040 232-CLASSROOM Classrooms (age 9 plus) 614 No 28.00 0.80 442.10 1,600 480 0.50 0.30 01-050 234-STUDENT LOUNGE Break rooms (general) 403 Yes 10.08 0.80 93.19 1,200 360 0.50 0.30 01-090 282 WORK COPY Office space 63 No 1.00 0.80 10.98 250 75 0.50 0.30

System area As (sq ft) 8,456 Net occupiable floor area served by the ventilation system

System population Ps (people) 151.00

Sum of zone population sum of Pz (people) 169.07 ∑Pz

Occupant diversity D 0.89 Ps / ∑Pz

Uncorrected outdoor air intake Vou (cfm) 2,054.19 D ∑ (Rp Pz) + ∑(Ra Az)

System primary airflow (at condition analyzed) Vps (cfm) 4,380

Average outdoor air fraction Xs 0.46 Vou / Vps

Which method from ASHRAE 62.1 is being used to determine system ventilation efficiency (Ev)? Appendix A

Ventilation efficiency Ev 0.79 Ventilation efficiency from critical zone

Outdoor air intake flow (required by 62.1) Vot (cfm) 2,600 Vou / Ev

Outdoor air intake flow provided (measured or design) (cfm) 3,100

Multiple zone

RTU1 (DEMAND CONTROL VENTILATION MINIMUM)

Show simple view

System name and number RTU1

Condition analyzed (impacts Ez, Vdz, Vpz and Vps) Heating

All zones are included in the VRP calculation Yes

Zone Name and Number

Occupancy Category

Zone Floor Area Are you using default value for zone population?

Zone Population

Zone Air Distribution

Effectiveness

Zone Outdoor Airflow

Zone Discharge

Airflow

Zone Primary Airflow

Zone Secondary Recirculation

Fraction Zone Primary Air

Fraction

Az Pz Ez Voz Vdz Vpz Er Ep (sq ft) (people) (cfm) (cfm) (cfm)

01-060 281 OPEN SPACE / CORRIDORS **** Corridors 700 Yes 0.00 0.80 52.50 1,100 330 0.50 0.30 01-070 281 TRAINING SUITE Classrooms (age 9 plus) 531 No 0.00 0.80 79.65 676 203 0.50 0.30 01-070 278 CORRIDOR Corridors 180 Yes 0.00 0.80 13.50 75 23 0.50 0.30 01-070 208 CORRIDOR Corridors 212 Yes 0.00 0.80 15.90 100 30 0.50 0.30 01-050 213-MENS RESTROOM 146 Yes 0.00 0.80 0.00 75 23 0.50 0.30 01-030 214-WOMENS RESTROOM 151 Yes 0.00 0.80 0.00 75 23 0.50 0.30 01-050 203-SECURITY ADMIN Office space 106 No 0.00 0.80 7.95 100 30 0.50 0.30 01-090 204-SKILL SOURCE Office space 842 No 0.00 0.80 63.15 1,350 405 0.50 0.30 01-080 206-WORKFORCE Office space 473 No 0.00 0.80 35.48 1,100 330 0.50 0.30 01-070 209-STORAGE CLOSET Storage rooms 60 Yes 0.00 0.80 9.00 50 15 0.50 0.30 01-110 215,218-SYSTEMIC SOLUTIONS Office space 450 No 0.00 0.80 33.75 500 150 0.50 0.30 01-110 216-STORAGE CLOSET Storage rooms 33 Yes 0.00 0.80 4.95 50 15 0.50 0.30 01-100 217-OFFICE Office space 126 No 0.00 0.80 9.45 200 60 0.50 0.30 01-050, 110 219 CORRIDOR *** Corridors 856 Yes 0.00 0.80 64.20 250 75 0.50 0.30 01-110 221-ROBOTIC STORAGE Storage rooms 277 Yes 0.00 0.80 41.55 150 45 0.50 0.30 01-100 222-ROBOTIC CLASSROOM Classrooms (age 9 plus) 535 No 0.00 0.80 80.25 1,200 360 0.50 0.30 01-010 229-CLASSROOM Classrooms (age 9 plus) 543 No 0.00 0.80 81.45 1,500 450 0.50 0.30 01-020 230-CLASSROOM Classrooms (age 9 plus) 543 No 0.00 0.80 81.45 1,500 450 0.50 0.30 01-030 231-CLASSROOM Classrooms (age 9 plus) 612 No 0.00 0.80 91.80 1,500 450 0.50 0.30 01-040 232-CLASSROOM Classrooms (age 9 plus) 614 No 0.00 0.80 92.10 1,600 480 0.50 0.30 01-050 234-STUDENT LOUNGE Break rooms (general) 403 No 0.00 0.80 30.23 1,200 360 0.50 0.30 01-090 282 WORK COPY Office space 63 No 0.00 0.80 4.73 250 75 0.50 0.30

System area As (sq ft) 8,456 Net occupiable floor area served by the ventilation system

System population Ps (people) 151.00

Sum of zone population sum of Pz (people) 0.00 ∑Pz

Occupant diversity D 0.00 Ps / ∑Pz

Uncorrected outdoor air intake Vou (cfm) 714.42 D ∑ (Rp Pz) + ∑(Ra Az)

System primary airflow (at condition analyzed) Vps (cfm) 4,380

Average outdoor air fraction Xs 0.16 Vou / Vps

Which method from ASHRAE 62.1 is being used to determine system ventilation efficiency (Ev)? Appendix A

Ventilation efficiency Ev 0.67 Ventilation efficiency from critical zone

Outdoor air intake flow (required by 62.1) Vot (cfm) 1,066 Vou / Ev

Outdoor air intake flow provided (measured or design) (cfm) 1,100

ROOFTOP AIR CONDITIONING UNIT SCHEDULE

DESIGNATION

MANUFACTURER

MODEL

NUMBER

LOCATION /

SERVICE

NOMINAL

COOLING

CAPACITY

(TON)

REFRIGERANT

SUPPLY

AIR

CFM

OUTSIDE

AIR CFM

OUTSIDE AIR DATA SUPPLY FAN EXHAUST FAN COOLING COIL ELECTRIC HEATING COIL ELECTRICAL DATA

GEN.

POWER

(Y/N)

VFD

(Y/N)

OPER.

WEIGHT

(LB)

NOTES

SUMMER WINTER

C

FM ES

P

(IN

W G

R

PM

BR

AK

E H

P

M O

TO

R

H P

ES

P

Q

TY

M O

TO

R

H P

FL

A

/ M O

C (E

AC

H

EAT LAT CAPACITY

EA

T

(º F)

LA

T

(º F)

C

AP

AC

IT

Y (K

W

C O

N

TR

O L

VO

LT

AG

E/

PH

AS

E

M C

A/ M

O P

U N

IT

FL

A

D B

(º F)

W B

(º F)

D B

(º F)

D B

(º F)

W B

(º F)

D B

(º F)

W B

(º F)

TO

TA

L (M

BH

SE

N

SI

BL

E (M

BH

RTU-1 CARRIER 50K ROOF / SECOND FLOOR EAST 40 R-454B 13,000 3,100 93.0 74.8 11.7 13,000 2.10 980 13.4 15 0.11 4 1 3.1 80.0 67.0 56.5 55.4 469 329 70.0 87.5 72.0 SCR 460 / 3 131 / 150 86.6 N Y 5,680 ALL

GENERAL NOTES:

A) PROVIDE DOWNFLOW SUPPLY / UPFLOW RETURN AIRFLOW CONFIGURATION WITH POWER EXHAUST FAN.

B) PROVIDE UNIT WITH 0-100% ENTHALPY ECONOMIZER.

C) PROVIDE 4" MERV 13 FILTERS.

D) PROVIDE STAINLESS STEEL DRIP PAN AND COOLING COIL CASING.

E) PROVIDE HINGED AND LATCHED ACCESS DOORS THAT DO NOT REQUIRE TOOLS FOR ACCESS.

F) COMMUNICATION INTERFACE SHALL BE BACNET.

G) EQUIPMENT SHALL MEET OR EXCEED MINIMUM EFFICIENCY REQUIREMENTS OF IEER 13.2 (ASHRAE 90.1-2022).

H) PROVIDE NEMA 3R DISCONNECT SWITCH MOUNTED ON UNISTRUT FRAMING, INSTALLED INDEPENDENTLY OF THE AHU CABINET AND ROOF CURB.

I) PROVIDE UNIT-MOUNTED WEATHERPROOF GFCI 120V DUPLEX CONVENIENCE RECEPTACLE.

J) PROVIDE CURB ADAPTER.

K) OPERATING WEIGHT REPRESENTS RTU ONLY AND DOES NOT INCLUDE CURB ADAPTER.

L) MAXIMUM COMBINED WEIGHT OF ROOFTOP UNIT AND CURB ADAPTER SHALL NOT EXCEED 6,800 LB. WHERE THE COMBINED INSTALLED WEIGHT EXCEEDS THIS LIMIT, THE CONTRACTOR SHALL PROVIDE STRUCTURAL ANALYSIS AND DESIGN, AND SHALL FURNISH AND INSTALL ALL REQUIRED SUPPLEMENTAL STRUCTURAL REINFORCEMENT TO SAFELY SUPPORT THE IMPOSED LOADS.

M) PROVIDE UNIT EXHAUST FAN WITH MULTI-STAGE POWER EXHAUST WITH BUILDING PRESSURE CONTROL.

N) PROVIDE FACTORY FURNISHED RETURN AIR HUMIDITY SENSOR TO FACILITATE COOLING-ONLY DEHUMIDIFICATION MODE. COOLING-ONLY DEHUMIDIFICATION MODE SHALL BE IMPLEMENTED USING THE UNIT MANUFACTURER'S NATIVE CONTROLLER LOGIC.

O) PROVIDE ECONOMIZER FAULT DETECTION AND DIAGNOSTIC SYSTEM (FDDS) AS STANDARD FEATURE.

P) MINIMUM SYSTEM OUTSIDE AIRFLOW WITH ALL TERMINAL UNITS IN DEMAND CONTROL VENTILATION MODE SHALL BE 1,100 CFM AS CALCULATED IN MECHANICAL VENTILATION CALCULATIONS, DEMAND CONTROL VENTILATION - ASHRAE 62.1 TABLE BELOW.

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

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(202) 362-2800

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

N.T.S.

MEP Engineer:

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

US0027294.0531

260-B6260-003

MT MLH

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

SCHEDULES AND

CALCULATIONS

ME-002

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

MECHANICAL VENTILATION CALCULATIONS - ASHRAE 62.1

1.

NOTES:

ZONE POPULATION IS BASED ON THE LARGEST OF THE DESIGN OCCUPANCY AND THE OCCUPANCY

CALCULATED USING DESIGNATED IMC / ASHRAE DEFAULT OCCUPANCY RATE UNLESS OTHERWISE

NOTED.

MECHANICAL VENTILATION CALCULATIONS, DEMAND CONTROL

VENTILATION - ASHRAE 62.13

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

TYPICAL RUNS FOR BRANCH CIRCUIT

MAXIMUM VOLTAGE DROP OF 3% BASED

ON COPPER:

CONDUCTOR SIZE

#12

#10

#8

#4

#3

#2

#12

#10

#8

#6

#4

#3

#2

#6

VOLTAGE PHASE CURRENT IN AMPS

MAXIMUM

DISTANCE IN

FEET

3 PHASE CONDUCTORS

WIRING SCHEDULE - COPPER CONDUCTORS (0-600V)

CIRCUIT

RATING

CONDUIT SIZE (INCHES) CONDUCTOR SIZE

G NG NGI NNG NNGI PHASE/

NEUTRAL

GND/*

IG

20 0.75 0.75 0.75 0.75 0.75 12 12

30 0.75 0.75 0.75 0.75 0.75 10 10

40 0.75 0.75 0.75 1 1 8 10

50 0.75 0.75 0.75 1 1 8 10

60 0.75 1 1 1 1.25 6 10

70 1 1.25 1.25 1.25 1.5 4 8

80 1 1.25 1.25 1.25 1.5 4 8

90 1.25 1.25 1.25 1.5 1.5 3 8

100 1.25 1.25 1.25 1.5 1.5 3 8

110 1.25 1.25 1.5 1.5 2 2 6

125 1.25 1.5 2 2 2 1 6

150 1.5 2 2 2 2.5 1/0 6

175 2 2 2 2.5 2.5 2/0 6

200 2 2.5 2.5 2.5 2.5 3/0 6

225 2 2.5 2.5 2.5 3 4/0 4

250 2.5 2.5 2.5 3 3 250 4

300 2.5 2.5 3 3 3 350 4

350 3 3 3.5 4 4 500 3

45 0.75 0.75 0.75 1 1 8 10

225NG

SUBSCRIPT KEY

SUBSCRIPT CONDUCTORS PER CONDUIT

G 3 PHASE CONDUCTORS, 1 GROUNDING CONDUCTOR

NG 3 PHASE CONDUCTORS, 1 NEUTRAL CONDUCTOR,

1 GROUNDING CONDUCTOR

NGI 3 PHASE CONDUCTORS, 1 NEUTRAL CONDUCTOR, 1 GROUNDING

CONDUCTOR, 1 ISOLATED GROUNDING CONDUCTOR

NNG 3 PHASE CONDUCTORS, 2 NEUTRAL CONDUCTORS*,

1 GROUNDING CONDUCTOR

NNGI 3 PHASE CONDUCTORS, 2 NEUTRAL CONDUCTORS*,

1 GROUNDING CONDUCTOR, 1 ISOLATED GROUNDING CONDUCTOR

EXAMPLES

SOURCE LOAD CIRCUIT RATING SUBSCRIPT

225 NG

TYPICAL COPPER SCHEDULES NOTES:

1. SCHEDULE IS BASED ON 2020 EDITION OF THE NATIONAL ELECTRICAL CODE.

2. CURRENT CARRYING CONDUCTOR AMPACITY IS BASED ON TABLE 310.15(B)(16) 3 CURRENT CARRYING CONDUCTORS IN RACE WAY, CABLE OR EARTH AT AMBIENT AIR TEMPERATURE OF 30 DEGREES C (86 DEGREE D).

3. CURRENT CARRYING CONDUCTOR AMPACITY IS BASED ON TABLE 310.15(B)(16), COPPER WITH INSULATION VALUE OF 75 DEGREES C (167 DEGREES F) TYPES RHW, THHW, THW, THWN, XHHW, USE, ZW.

4. RACEWAY FILL SCHEDULE IS BASED ON USING COPPER CONDUCTORS WITH THHN, THWN OR THWN-2.

5. MAXIMUM FILL FOR RACEWAY IS BASED ON TABLE 1 CHAPTER 9 AND TABLE C.1 FOR ELECTRIC METAL TUBING (EMT). ADJUST FILL FOR DIFFERENT RACEWAY TYPES INCLUDING TABLE C.4 INTERMEDIATE METAL CONDUIT, (IMC), TABLE C.8 RIGID METAL CONDUIT (RMC), TABLE C.10 RIGID PVC CONDUIT -SCHEDULE 40 AS REQUIRED FOR APPLICATION AND IN ACCORDANCE WITH THE SPECIFICATION.

6. IN ACCORDANCE WITH CHAPTER 9 TABLES, NOTE 3, THE GROUND CONDUCTOR IS INCLUDED IN THE FILL CALCULATION. FOR THE PURPOSE OF THE FILL CALCULATION, THE GROUND CONDUCTOR IS ASSUMED THE SAME

TYPICAL RUNS FOR FEEDER

MAXIMUM VOLTAGE DROP OF 2% BASED

ON COPPER:

CONDUCTOR SIZE

#3

#2

#1

#2/0

#3/0

#4/0

#3

#2

#1

#1/0

#2/0

#3/0

#1/0

VOLTAGE PHASE CURRENT IN AMPS

MAXIMUM

DISTANCE IN

FEET

805#4/0

11. BRANCH CIRCUITS ARE SIZED FOR A MAXIMUM VOLTAGE DROP OF 3%. FEEDERS ARE SIZED FOR A MAXIMUM VOLTAGE DROP OF 2%.

SIZE AS THE CURRENT CARRYING CONDUCTOR.

7. FOR THE PURPOSE OF FILL CALCULATION AND CONDUCTOR RATING, THE NEUTRAL CONDUCTOR IS NOT CONSIDERED A CURRENT CARRYING CONDUCTOR AS REFERENCED IN 310.15(B)(5).

8. CONDUCTORS RUN IN PARALLEL ARE PERMITTED IN SIZE 1/0 AND LARGER AND ONLY IF RUN IN SEPARATE RACEWAYS. PARALLELED CONDUCTORS SHALL NOT BE PERMITTED TO BE RUN IN THE SAME RACEWAY EVEN IF

ALLOWED BY THE CONDUIT FILL TABLES.

9. EQUIPMENT GROUNDING CONDUCTOR RATING IS BASED ON TABLE 250.122. REFER TO NEC TABLE 250.66 FOR SERVICE ENTRANCE GROUNDING ELECTRODE CONDUCTOR RATING.

10. THE MAXIMUM ALLOWABLE CONDUCTOR SIZE SHALL BE 500KCMIL.

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

ARLINGTON VA, 22209

(202) 362-2800

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

N.T.S.

MEP Engineer:

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

US0027294.0531

260-B6260-003

MT Checker

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

SCHEDULES

ME-003

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

EQUIPMENT SCHEDULE - MECHANICAL

NOTES: ELECTRICAL CONTRACTOR SHALL PROVIDE WIRING BETWEEN THE ELECTRICAL DISCONNECT AND THE MECHANICAL EQUIPMENT POWER CONNECTION. ELECTRICAL CONTRACTOR SHALL COORDINATE FINAL ELECTRICAL CONNECTION WITH MECHANICAL SHOP DRAWINGS

AND/OR SUBMITTALS. ALL WIRE SIZES BASED ON "NG" TYPE AS OUTLINED IN WIRING SCHEDULE. *= DESIGNATES NOT APPLICABLE

EQUIPMENT

DESIGNATION ELECTRICAL DATA

S =Motor Rated Switch*, TO = Thermal

Overload Switch

SWITCH SIZE

(AS)*

FUSE SIZE

(AF)* WIRE SIZE PANEL NAME CIRCUIT

NUMBER NOTES

TYPE NUMBER FLA VA VOLTAGE PHASE

FD = Fused Disconnect, NFD = Non-Fused Disconnect

VFD = Variable Frequency Drive, MS = Motor Starter

MSD = Motor Starter Disconnect, SP = Single Point Connection*

VFDD = Variable Frequency Drive with Disconnect

DISCONNECT TYPE

RTU 1 131 108861 VA 480 V 3 FD 200 150 150 (E) L2E Sec 2 38,40,42

SPARE LOADS CLASSIFICATION INDICATED EXISTING LOAD VALUES.

TOTAL EXISTING LOAD TO BE DEMOLISHED IN THE PANEL: 100 A.

TOTAL NEW LOAD TO BE ADDED TO THIS PANEL: 31 A.

NET LOAD: 31 A.

Notes:

Total Est. Demand Current: 305 A Total Conn. Current: 305 A

Total Est. Demand: 253872 VA Spare 145011 VA 100.00% 145011 VA Total Conn. Load: 253872 VA

HVAC 108861 VA 100.00% 108861 VA

Load Classification Connected Load Demand Factor Estimated Demand Panel Totals

Legend:

Total Amps: 298 A 311 A 311 A Total Load: 82408 VA 85732 VA 85732 VA

41 (E) SPACE -- 1 -- 36287 VA -- -- -- 42

39 (E) SPACE -- 1 -- 36287 VA -- -- -- 40

37 (E) SPACE -- 1 -- 36287 VA 3 150 A RTU-1 38

35 -- -- -- 3833 VA 3833 VA -- -- -- 36

33 -- -- -- 3833 VA 3833 VA -- -- -- 34

31 (E) VAV 20 A 3 3833 VA 3833 VA 3 15 A (E) VAV 32

29 -- -- -- 3066 VA 2700 VA -- -- -- 30

27 -- -- -- 3066 VA 2700 VA -- -- -- 28

25 (E) VAV 20 A 3 3066 VA 2700 VA 3 15 A (E) VAV 26

23 -- -- -- 14965 VA 0 VA -- -- -- 24

21 -- -- -- 14965 VA 0 VA 2 30 A (E) SPARE 22

19 (E) PANEL P2E SEC 1, 2, 3 90 A 3 14965 VA 0 VA -- -- -- 20

17 -- -- -- 0 VA 0 VA 2 30 A (E) SPARE 18

15 -- -- -- 0 VA 0 VA -- -- -- 16

13 (E) SPARE 20 A 3 0 VA 0 VA -- -- -- 14

11 (E) FLOOD LIGHTS / WALL PACKS 20 A 1 3324 VA 0 VA 3 25 A (E) SPARE 12

9 (E) SPACE -- 1 -- 3324 VA 1 20 A (E) WATER HEATER BATHROOM 10

7 (E) EAST LIGHTING 20 A 1 3324 VA 14400 VA -- -- -- 8

5 (E) EAST LIGHTING 20 A 1 3324 VA 14400 VA -- -- -- 6

3 (E) EAST LIGHTING 20 A 1 3324 VA 14400 VA 3 70 A (E) RTU-5 4

1 (E) SPACE -- 1 -- -- 1 -- (E) SPACE 2

CKT Circuit Description Trip Poles A B C Poles Trip Circuit Description CKT

EXISTING PANELBOARD: SIEMENS - CDP-7

Notes:

Enclosure: Type 1 MCB Rating: -- Mounting: Surface Wires: 4 Mains Rating: 400 A

Supply From: Main SWBD Phases: 3 Mains Type: MLO Location: East Elec Rm, 2nd Floor Volts: 480/277 WYE A.I.C. Rating: 14 kAIC

Branch Panel: (E) L2E Sec 2

EXISTING SPARE CIRCUIT BREAKER PROVIDED FROM EXISTING CONDITION

EXISTING SPACE PROVIDED FROM EXISTING CONDITION

PROVIDE NEW CIRCUIT BREAKER PER RATINGS INDICATED TO REPLACE EXISTING SPARE CIRCUIT BREAKER OR SPACE UNDER CURRENT PROJECT SCOPE OF WORK

EXISTING CIRCUIT TO BE REMOVED UNDER THIS PACKAGE

PANELBOARD NOTES

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

A

B

C

D

11 12 13 14 15 16 17 18

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

ARLINGTON VA, 22209

(202) 362-2800

SHEET NOTES GENERAL NOTES

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

MEP Engineer:

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

3/32" = 1'-0"

US0027294.0531

260-B6260-003

MT MLH

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

OVERALL PLAN

ME-101

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

3/32" = 1'-0"

OVERALL PLAN

A.

B.

C.

D.

E.

THE NEW ROOFTOP EQUIPMENT MAY BE MOUNTED ON THE EXISTING ROOF CURB

OR CURB ADAPTER, IF COMPATIBLE. OTHERWISE, DEMOLISH CURB ADAPTER AND

PROVIDE NEW CURB ADAPTER DESIGNED FOR PROPOSED NEW EQUIPMENT.

COORDINATE INSTALLATION TIMING WITH THE OWNER.

COORDINATE THE OWNER'S REQUIREMENTS FOR POSITIONING OF THE MAIN CAB

AND PROTECTION OF THE OWNER'S GROUNDS.

CONTRACTOR IS RESPONSIBLE FOR ALL PERMITS FOR CRANE RIGGING, ROAD

CLOSURES, ELECTRICAL WORK, AND THE REPLACEMENT OF EQUIPMENT.

CONTRACTOR SHALL NOT VOID ANY ROOF WARRANTIES. ROOFING SERVICE

COMPANY SHALL INSPECT THE ROOF PRIOR TO AND AFTER CONSTRUCTION FOR

DAMAGES CAUSED BY THE PROJECT. ROOFING WILL BE REPAIRED / RESTORED

AT CONTRACTOR'S EXPENSE.

F. REFER TO THE TABLE ON SHEET ME-301 FOR THE LIST OF SPACES SERVED BY

THE EXISTING RTU AND THE CORRESPONDING AIRFLOW QUANTITIES. THE

INFORMATION PRESENTED IN THE SHEET ME-301 TABLE IS BASED ON 2015

CONSTRUCTION DOCUMENTS AND IT IS PROVIDED FOR REFERENCE ONLY.

G. BALANCE ASSOCIATED SYSTEM ACCORDING TO PREVIOUSLY PERMITTED

AIRFLOWS AS INDICATED IN NOTE F.

H. CONTRACTOR SHALL PROVIDE A MINIMUM 7-DAY NOTICE TO THE CxA AND A/E

PRIOR TO THE RTU START-UP AND FUNCTIONAL TESTING.

I. BEFORE CxA SITE VISIT, ALL PRE-FUNCTIONAL CHECKLISTS, START-UP REPORTS, AND BAS INTEGRATION MUST BE VERIFIED BY THE CONTRACTOR AS 'COMPLETE'.

N

J. CONTRACTOR MUST PROVIDE WALKWAY PADS OR PLYWOOD

PROTECTION FROM THE ROOF HATCH OR ROOF ACCESS TO THE UNIT

TO PREVENT DAMAGE TO THE EXISTING MEMBRANE DURING THE

"TURNKEY" INSTALLATION.

K. COORDINATE NOISY WORK OR CRANE LIFTS A WEEK IN ADVANCE TO

AVOID DISRUPTING CLASSES

08' 4'

SCALE: 3/32" = 1' - 0"

GRAPHIC SCALE

8' 16' 32'24'

G. BALANCE ASSOCIATED SYSTEM ACCORDING TO PREVIOUSLY PERMITTED

AIRFLOWS AS INDICATED IN NOTE F.

H. CONTRACTOR SHALL PROVIDE A MINIMUM 7-DAY NOTICE TO THE CxA AND A/E

PRIOR TO THE RTU START-UP AND FUNCTIONAL TESTING.

I. BEFORE CxA SITE VISIT, ALL PRE-FUNCTIONAL CHECKLISTS, START-UP REPORTS, AND BAS INTEGRATION MUST BE VERIFIED BY THE CONTRACTOR AS 'COMPLETE'.

ANY RE-TESTING REQUIRED DUE TO INCOMPLETE INSTALLATION WILL BE AT THE

CONTRACTOR'S EXPENSE.

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

A

B

C

D

11 12 13 14 15 16 17 18

(X)RTU

(E)RTU

(E)RTU

(E)RD

(E)RD

(E) L2E Sec 2/ 38,40,42

(X) RTU-1

S

S

(E)ROOF HATCH

A

B

C

D

11 12 13 14 15 16 17 18

RTU

2 3

(E)RTU

(E)RTU

2 4

(E)RD (E)RD

1 1/4" D

S

S

(E) L2E Sec 2/ 38,40,42

RTU-1

5 GFCI

WP (E)

(E)ROOF HATCH

(E)

(E)

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

ARLINGTON VA, 22209

(202) 362-2800

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

MEP Engineer:

GENERAL NOTES

KEYNOTES

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

1/8" = 1'-0"

US0027294.0531

260-B6260-003

MT MLH

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

ROOF PLANS

ME-201

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

1 REMOVE EXISTING RTU AND ASSOCIATED ACCESSORIES. EXISTING SMOKE

DETECTOR TO REMAIN.

2 PROVIDE NEW ROOF TOP UNIT RTU-1 AS SCHEDULED. PROVIDE NEW ADAPTER

CURB TO ACCOMMODATE NEW RTU-1. THE NEW UNIT AND CURB ADAPTER WILL

SIT ON AN EXISTING CURB WITH GASKETING AND SHALL BE INSTALLED PER

MANUFACTURER'S RECOMMENDATIONS.

3 THIS UNIT SERVES THE SECOND FLOOR EAST SPACES.

4 ROUTE PIPING DOWN TO ROOF AND DISCHARGE AT ROOF DRAIN. PROVIDE ROOF

PIPING SUPPORT PER SPECIFICATION 232113.

5 EXISTING VERTICAL SUPPLY AND RETURN AIR DUCTWORK AND SMOKE

DETECTORS SHOWN FOR REFERENCE ONLY. FIELD VERIFY EXACT DUCTWORK

LOCATION AND ADJUST CURB ADAPTER REQUIREMENTS AS NEEDED.

6 PROVIDE NEW EPDM PRESSURE-SENSITIVE MOLDED WALKWAY PADS AS SHOWN.

7 REFER TO ROOM 200-J ELECTRICAL FOR PANEL L2E ON SHEET ME-301.

1/8" = 1'-0"

ROOF DEMOLITION PLAN - EAST

1/8" = 1'-0"

ROOF NEW WORK PLAN - EAST

1 A.

B.

C.

D.

E.

F.

G.

H.

I.

J.

K.

THE NEW ROOFTOP EQUIPMENT MAY BE MOUNTED ON THE EXISTING ROOF

CURB OR CURB ADAPTER, IF COMPATIBLE. OTHERWISE, DEMOLISH CURB

ADAPTER AND PROVIDE NEW CURB ADAPTER DESIGNED FOR PROPOSED NEW

EQUIPMENT.

COORDINATE INSTALLATION TIMING WITH THE OWNER.

COORDINATE THE OWNER'S REQUIREMENTS FOR POSITIONING OF THE MAIN

CAB AND PROTECTION OF THE OWNER'S GROUNDS.

CONTRACTOR IS RESPONSIBLE FOR ALL PERMITS FOR CRANE RIGGING, ROAD

CLOSURES, ELECTRICAL WORK, AND THE REPLACEMENT OF EQUIPMENT.

CONTRACTOR SHALL NOT VOID ANY ROOF WARRANTIES. ROOFING SERVICE

COMPANY SHALL INSPECT THE ROOF PRIOR TO AND AFTER CONSTRUCTION

FOR DAMAGES CAUSED BY THE PROJECT. ROOFING WILL BE REPAIRED /

RESTORED AT CONTRACTOR'S EXPENSE.

REFER TO THE TABLE ON SHEET ME-301 FOR THE LIST OF SPACES SERVED BY

THE EXISTING RTU AND THE CORRESPONDING AIRFLOW QUANTITIES. THE

INFORMATION PRESENTED IN THE SHEET ME-301 TABLE IS BASED ON 2015

CONSTRUCTION DOCUMENTS AND IT IS PROVIDED FOR REFERENCE ONLY.

BALANCE ASSOCIATED SYSTEM ACCORDING TO PREVIOUSLY PERMITTED

AIRFLOWS AS INDICATED IN NOTE F.

CONTRACTOR SHALL PROVIDE A MINIMUM 7-DAY NOTICE TO THE CxA AND A/E

PRIOR TO THE RTU START-UP AND FUNCTIONAL TESTING.

BEFORE CxA SITE VISIT, ALL PRE-FUNCTIONAL CHECKLISTS, START-UP

REPORTS, AND BAS INTEGRATION MUST BE VERIFIED BY THE CONTRACTOR AS

'COMPLETE'. ANY RE-TESTING REQUIRED DUE TO INCOMPLETE INSTALLATION

WILL BE AT THE CONTRACTOR'S EXPENSE.

CONTRACTOR MUST PROVIDE WALKWAY PADS OR PLYWOOD PROTECTION

FROM THE ROOF HATCH OR ROOF ACCESS TO THE UNIT TO PREVENT DAMAGE

TO THE EXISTING MEMBRANE DURING THE "TURNKEY" INSTALLATION.

COORDINATE NOISY WORK OR CRANE LIFTS A WEEK IN ADVANCE TO AVOID

DISRUPTING CLASSES.

GFCI

WP (E)

N

N

08' 4'

SCALE: 1/8" = 1' - 0"

GRAPHIC SCALE

8' 16' 24'

08' 4'

SCALE: 1/8" = 1' - 0"

GRAPHIC SCALE

8' 16' 24'

(E)

(E)

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

WZPE24

WZPE24

WZPE24

WZPE24

6 7 8 9 10

16 17 18 19 20

A2

A1 A2

DN

DN

A

B

C

D

161514131211

MICRO

T

F

A

B

C

D

11 12 13 14 15 16 17

(E) L2E Sec 1

(E) L2E Sec 2

(E) P2E Sec 1

(E) P2E Sec 2

(E) P2E Sec 3

206 - WORKFORCE

SUITE

205 - WORK/COPY

203 -

SECURITY/ADMIN

OFFICE

213 - MENS

RESTROOM

214 - WOMENS

RESTROOM

217 - OFFICE218 - WORK/COPY

215 - SYSTEMIC

SOLUTION SUITE

216 - STORAGE

CLOSET

222 - ROBOTIC

CLASSROOM

221 - ROBOTICS

STORAGE 220 - STUDY NOOK

230 - TRAINING

CLASSROOM

231 - TRAINING

CLASSROOM

232 - TRAINING

CLASSROOM

234 - STUDENT

LOUNGE

200-J - EXISTING

ELECTRICAL

210 - NETWORK

CLOSET

209 - STORAGE

CLOSET

211 - CORRIDOR 219 - CORRIDOR

208 - CORRIDOR

204 - SKILL SOURCE

SUITE

200 - ATRIUM

281 - TRAINING SUITE

233 - STUDY NOOK

223 - ROBOTIC

CLASSROOM

229 - WORKFORCE

CLASSROOM

278 - CORRIDOR

TABLE 1.1 - LIST OF ROOMS AND CORRESPONDING AIRFLOWS SERVED BY EXISTING RTU

VAV

DESIGNATION

ROOM

NUMBER ROOM NAME

OUTLET AIRFLOW DATA

TOTAL CFM NUMBER OF SUPPLY

AIR DIFFUSERS COMMENT

VAV 200 ATRIUM 1100 3 3x375 CFM DIFFUSERS AT ATRIUM WALL

VAV

203 SECURITY ADMIN 100 1 1X100 CFM DIFFUSER

211 CORRIDOR 100 1 1X100 CFM DIFFUSER BY ATRIUM

213 MENS RESTROOM 75 1 1X75 CFM DIFFUSER AT DOOR

234 STUDENT LOUNGE 1200 4 4X300 CFM DIFFUSERS

VAV 204, 205 SKILL SOURCE 1350 6

3X250 CFM DIFFUSERS AT WINDOWS

3X200 CFM DIFFUSERS CENTER OF ROOM

218 WORK/COPY 250 1 1X250 CFM DIFFUSER AT WINDOWS

VAV 206 WORKFORCE 1100 4 4X275 CFM DIFFUSERS AT WINDOWS

VAV

208 CORRIDOR 100 1 1X100 CFM DIFFUSER

209 STORAGE CLOSET 50 1 1X50 CFM DIFFUSER

273 CORRIDOR 75 1 1X75 CFM DIFFUSER

281 TRAINING SUITE 675 3 3X225 CFM DIFFUSERS

VAV

215 SYSTEMIC SOLUTIONS 250 2 2X250 CFM DIFFUSERS BY CORRIDORS

216 STORAGE CLOSET 50 1 1X50 CFM DIFFUSER

219 CORRIDOR 250 1 1X150 CFM DIFFUSER AT ROOM 231 DOOR

220 STUDY NOOK 200 1 1X200 CFM DIFFUSER IN CORRIDOR

221 ROBOTIC STORAGE 150 1 1X150 CFM DIFFUSER

VAV

217 OFFICE 200 1 1X200 CFM DIFFUSER

222 ROBOTIC CLASSROOM 1200 4 4X300 CFM DIFFUSERS

VAV 229 CLASSROOM 1500 4 4X375 CFM DIFFUSERS

VAV 230 CLASSROOM 1500 4 4X375 CFM DIFFUSERS

VAV

214 WOMENS RESTROOM 75 1 1X75 CFM DIFFUSER AT DOOR

231 CLASSROOM 1500 4 4X375 CFM DIFFUSERS

VAV 232 CLASSROOM 1600 4 4X400 CFM DIFFUSERS

GENERAL:

A. THE INFORMATION PRESENTED IN THIS TABLE WAS DERIVED FROM THE EXISTING CONSTRUCTION DOCUMENTS DATED JULY 6, 2015 AND IS PROVIDED FOR REFERENCE PURPOSES ONLY. FIELD VERIFICATION OF ALL EXISTING CONDITIONS IS REQUIRED PRIOR TO CONSTRUCTION.

B. RETURN AIR GRILLES ASSOCIATED WITH THE SPACES IDENTIFIED IN THIS TABLE ARE CONNECTED TO THE EXISTING RETURN AIR PLENUM SYSTEM. AS PART OF A PLENUM RETURN CONFIGURATION, THESE RETURN AIR DEVICES ARE NOT INDIVIDUALLY BALANCED AND NO RETURN

AIRFLOW QUANTITIES ARE ASSOCIATED WITH THE GRILLES.

C. REFER TO EXISTING BUILDING AUTOMATION SYSTEM FOR VAV BOX DESIGNATION.

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

ARLINGTON VA, 22209

(202) 362-2800

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

MEP Engineer:

GENERAL NOTES

KEYNOTES

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

As indicated

US0027294.0531

260-B6260-003

MT MLH

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

PARTIAL FLOOR

PLANS

ME-301

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

A.

B.

REFER TO THE TABLE ON SHEET ME-301 FOR THE LIST OF SPACES

SERVED BY THE EXISTING RTU AND THE CORRESPONDING

AIRFLOW QUANTITIES. THE INFORMATION PRESENTED IN THE

SHEET ME-301 TABLE IS BASED ON 2015 CONSTRUCTION

DOCUMENTS AND IT IS PROVIDED FOR REFERENCE ONLY.

BALANCE ASSOCIATED SYSTEM ACCORDING TO PREVIOUSLY

PERMITTED AIRFLOWS AS INDICATED IN NOTE A.

1/8" = 1'-0"

SECOND FLOOR NEW WORK PLAN

N

1 PROVIDE A SPARE FUSE CABINET IN THE ELECTRICAL CLOSET. PROVIDE 1

COMPLETE SET OF FUSES FOR EACH TYPE OF FUSES USED FOR THIS PROJECT.

08' 4'

SCALE: 1/8" = 1' - 0"

GRAPHIC SCALE

8' 16' 24'

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

SUSPENDED CEILINGS CAVITY.

SUSPENDED CEILINGS.

OCCUPIED SPACE.

SUSPENDED CEILINGS CAVITY.

SUSPENDED CEILINGS.

OCCUPIED SPACE.

150G

3 5

150AF

200AS

(E) 1600A MAIN

SWITCHBOARD

480/277V 3ɸ-4W

480/277V 3ɸ-4W 400A

DEMO RISER NEW WORK RISER

(E) 1600A MAIN

SWITCHBOARD

480/277V 3ɸ-4W

480/277V 3ɸ-4W 400A

EAST ELEC RM EAST ELEC RM

MAIN ELEC RMMAIN ELEC RM

RTU-1

WP

M M

T F

XFMR

75kVA

M M

(E) (E) (E) (E) (E)

(E) (E)

(E)

(E)

(E) (E) (E) (E) (E)

(E) (E)(E) (E)

(E)(E)

(E) (E) (E) (E)

125AF

200AS

ELEVATION:

LEVEL 2

ELEVATION:

ROOF

ELEVATION:

ROOF

ELEVATION:

LEVEL 2

ELEVATION:

LEVEL 1

ELEVATION:

LEVEL 1

T F

XFMR

75kVA

PNL

L2E

SEC 1

L2E

ELEVATION:

LEVEL 2

ELEVATION:

ROOF

ELEVATION:

ROOF

ELEVATION:

LEVEL 2

ELEVATION:

LEVEL 1

ELEVATION:

LEVEL 1

PNL

L2E

SEC 2

PNL

P2E

SEC 1

PNL

P2E

SEC 2

PNL

P2E

SEC 3

(E) (E)

(E)

(E)

PNL

L2E

SEC 1

PNL

L2E

SEC 2

PNL

P2E

SEC 1

PNL

P2E

SEC 2

PNL

P2E

SEC 3

L2E

RTU-1

WP

WSP USA Buildings Inc wsp.com

1300 N 17TH ST, SUITE 1000

ARLINGTON VA, 22209

(202) 362-2800

SHEET NOTES GENERAL NOTES

NO. REVISION DATE

SCALE:

DWN. BY:

VCCS PROJECT NO.:

WSP PROJECT NO.:

CKD. BY:

OWNER NAME:

PROJECT TITLE:

TITLE

WRITTEN DIMENSIONS ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER

SCALED DIMENSIONS. THESE DRAWING SHALL BE COPIED FROM THE ORIGINAL

BLUEPRINTS AND ARE APPROXIMATELY TO SCALE. IT IS THE CONTRACTORS

RESPONSIBILITY TO VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND

CONDITIONS ON THE PROJECT AND SHALL NOTIFY THE ENGINEER OF ANY

VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THESE

DRAWINGS.

MEP Engineer:

PROJECT CODE:

Commissioning Agent:

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

As indicated

US0027294.0531

260-B6260-003

MT MLH

VCCS - NORTHERN

VIRGINIA COMMUNITY

COLLEGE

MTS REPLACE ROOF

TOP UNIT

RISERS

ME-501

PROJECT ADDRESS:

10500 BATTLEVIEW PKWY

MANASSAS, VIRGINIA 20109

260-B6260-003

N.T.S.

RISER

1 REMOVE EXISTING FUSED DISCONNECT.

2 EXISTING FEEDER FROM PANEL L2E SEC 2. DEMO EXISTING CONDUCTORS AND

CONDUIT.

3 REMOVE THE CONDUIT FROM THE PITCH POCKET. SEAL AD MAKE WATER TIGHT.

4 REMOVE THE ASSOCIATED CIRCUIT BREAKER IN PANEL L2E.

5 ROUTE NEW FEEDER WITHIN THE CURB CONFINES. SEAL THE CURB PENETRATION

WATER TIGHT.

6 PROVIDE FIELD MARKING INDICATING THE UNIT HAS 10KAIC SCCR RATING.

7 AREA FOR DEMOLITION OF THE 3-1/0 CU. CONDUCTOR IN 2" ELECTRIC METAL TUBING

INCLUDES SPACES WITH SUSPENDED CEILINGS.

8 AREA FOR INSTALLING NEW FEEDER INCLUDES SPACES WITH SUSPENDED CEILINGS.

A.

B.

C.

INFORMATION SHOWN IN GRAY ON THE ONE-LINE DIAGRAM REPRESENTS EXISTING

CONDITIONS THAT ARE TO REMAIN AND IS PROVIDED FOR REFERENCE ONLY.

INFORMATION SHOWN IN DASHED ON THE ONE-LINE DIAGRAM REPRESENTS

EXISTING EQUIPMENT THAT IS TO BE DEMOLISHED.

INFORMATION SHOWN IN DARK ON THE ONE-LINE DIAGRAM REPRESENTS NEW

WORK.

10030 WINDY HOLLOW RD

GREAT FALLS, VA 22066

703.731.1509

MICHAEL L.

HATHORNE

Lic. No. 0402066441

SEQUENCE OF OPERATIONS

ROOFTOP AIR CONDITIONING UNIT WITH ELECTRIC HEAT

BUILDING AUTOMATION SYSTEM INTERFACE:

THE BUILDING AUTOMATION SYSTEM (BAS) SHALL SEND THE CONTROLLER OCCUPIED BYPASS,

MORNING WARM-UP / PRE-COOL, OCCUPIED / UNOCCUPIED AND HEAT / COOL MODES.

IF A BAS IS NOT PRESENT, OR COMMUNICATION IS LOST WITH THE BAS THE CONTROLLER SHALL

OPERATE USING DEFAULT MODES AND SETPOINTS.

THE BAS SHALL ALSO SEND THE CONTROLLER A DUCT STATIC PRESSURE SETPOINT, DISCHARGE AIR

TEMPERATURE SETPOINT, AND VENTILATION AIRFLOW SETPOINT, EACH CALCULATED BY

OPTIMIZATION ROUTINES IN THE BAS.

EXISTING BAS PROGRAMMING SHALL BE UPDATED TO ACCOMMODATE NEW EQUIPMENT WITH

CONTROLS POINTS AND GRAPHICS.

OCCUPIED MODE:

DURING OCCUPIED PERIODS, THE SUPPLY FAN SHALL RUN CONTINUOUSLY AND THE OUTSIDE AIR DAMPER SHALL OPEN TO MAINTAIN THE CURRENT AIRFLOW SETPOINT. THE UNIT CONTROLLER SHALL CONTROL THE SUPPLY FAN SPEED TO MAINTAIN THE CURRENT DUCT STATIC PRESSURE SETPOINT (ADJ.).THE DX COOLING AND ELECTRIC HEAT SHALL STAGE TO MAINTAIN THE CURRENT DISCHARGE

AIR TEMPERATURE SETPOINT. IF ECONOMIZING IS ENABLED THE OUTSIDE AIR DAMPER SHALL

MODULATE TO MAINTAIN THE CURRENT DISCHARGE AIR TEMPERATURE SETPOINT.

UNOCCUPIED MODE (VERIFY SEQUENCES ACCEPTABLE WITH EXISTING PROGRAMMING):

WHEN THE SPACE TEMPERATURE IS BELOW THE UNOCCUPIED HEATING SETPOINT OF 55.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL START, THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED AND THE

ELECTRIC HEAT SHALL BE ENABLED. WHEN THE SPACE TEMPERATURE RISES ABOVE THE

UNOCCUPIED HEATING SETPOINT OF 55.0 DEG. F (ADJ.) PLUS THE UNOCCUPIED DIFFERENTIAL OF 4.0

DEG. F (ADJ.) THE SUPPLY FAN SHALL STOP AND THE ELECTRIC HEAT SHALL BE DISABLED.

WHEN THE SPACE TEMPERATURE IS ABOVE THE UNOCCUPIED COOLING SETPOINT OF 85.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL START, THE OUTSIDE AIR DAMPER SHALL OPEN IF ECONOMIZING IS

ENABLED AND REMAIN CLOSED IF ECONOMIZING IS DISABLED AND THE DX COOLING SHALL BE

ENABLED. WHEN THE SPACE TEMPERATURE FALLS BELOW THE UNOCCUPIED COOLING SETPOINT OF

85.0 DEG. F (ADJ.) MINUS THE UNOCCUPIED DIFFERENTIAL OF 4.0 DEG. F (ADJ.) THE SUPPLY FAN SHALL STOP, THE DX COOLING SHALL BE DISABLED AND THE OUTSIDE AIR DAMPER SHALL CLOSE.

OPTIMAL START:

THE BAS SHALL MONITOR THE SCHEDULED OCCUPIED TIME, OCCUPIED SPACE SETPOINTS AND SPACE

TEMPERATURE TO CALCULATE WHEN THE OPTIMAL START OCCURS.

MORNING WARM-UP MODE (VERIFY SEQUENCES ACCEPTABLE WITH EXISTING PROGRAMMING):

DURING OPTIMAL START, IF THE AVERAGE SPACE TEMPERATURE IS BELOW THE OCCUPIED HEATING

SETPOINT A MORNING WARM-UP MODE SHALL BE ACTIVATED.

WHEN MORNING WARM-UP IS INITIATED, THE UNIT SHALL ENABLE THE HEATING AND SUPPLY FAN. THE

OUTSIDE AIR DAMPER SHALL REMAIN CLOSED.

WHEN THE AVERAGE SPACE TEMPERATURE REACHES THE OCCUPIED HEATING SETPOINT (ADJ.), THE

UNIT SHALL TRANSITION TO THE OCCUPIED MODE.

PRE-COOL MODE:

DURING OPTIMAL START, IF THE AVERAGE SPACE TEMPERATURE IS ABOVE THE OCCUPIED COOLING SETPOINT, PRE-COOL MODE SHALL BE ACTIVATED. WHEN PRE-COOL IS INITIATED, THE UNIT SHALL ENABLE THE FAN AND COOLING OR ECONOMIZER. THE OUTSIDE AIR DAMPER SHALL REMAIN CLOSED, UNLESS ECONOMIZING. WHEN THE AVERAGE SPACE TEMPERATURE REACHES OCCUPIED COOLING

SETPOINT (ADJ.), THE UNIT SHALL TRANSITION TO THE OCCUPIED MODE.

OPTIMAL STOP:

THE BAS SHALL MONITOR THE SCHEDULED UNOCCUPIED TIME, OCCUPIED SETPOINTS AND SPACE TEMPERATURE TO CALCULATE WHEN THE OPTIMAL STOP OCCURS. WHEN THE OPTIMAL STOP MODE IS ACTIVE THE UNIT CONTROLLER SHALL MAINTAIN THE SPACE TEMPERATURE USING AN ADJUSTED SPACE TEMPERATURE SETPOINT BASED ON THE CURRENT MODE OF OPERATION. IN COOLING MODE, THE ACTIVE SPACE TEMPERATURE SETPOINT SHALL BE EQUAL TO THE OCCUPIED COOLING SETPOINT

PLUS THE SPACE TEMPERATURE…