60040513.pdf

2246 Yaupon Drive Wilmington, NC 28401

Phone: 910.791.4000 Fax: 910.791.5266 www.cbhfengineers.com NC# P-0506c Copyright 2024CBHF Engineers, PLLC

Engineers, PLLC 043801

TROY O. GRADY

SEAL

R

EENI GN

P R

OF E S S I ON

A

E

L

NO

RT H CAROL I NA

1. ALL MECHANICAL WORK SHALL BE IN STRICT COMPLIANCE WITH ALL APPLICABLE FEDERAL, STATE AND LOCAL CODES

AND STANDARDS.

2. ALL DIMENSIONS AND ELEVATIONS FOR NEW EQUIPMENT, DUCTWORK, PIPING AND APPARATUS ARE APPROXIMATE AND ARE ONLY FOR CONTRACTOR'S GUIDANCE. CONTRACTOR SHALL SUBMIT DIMENSIONS AND ELEVATIONS VERIFIED IN THE FIELD. DUCTWORK AND PIPING INDICATED ON THE DRAWINGS, SECTIONS AND PROSPECTIVE VIEWS ARE SHOWN DIAGRAMMATICALLY. DUCT AND PIPE ELEVATIONS IN EXACT LOCATIONS SHALL BE DETERMINED BY THE INSTALLING

CONTRACTOR AND DETAILED ON THE SHOP DRAWINGS.

3. ALL DUCT DIMENSIONS INDICATED ON PLAN ARE CLEAR INSIDE DIMENSIONS. CONTRACTOR MUST ACCOUNT FOR THE

THICKNESS OF EXTERIOR INSULATION WHEN DETERMINING INSTALLATION CLEARANCES.

4. THE CONTRACTOR SHALL TEMPORARILY COVER ALL EXPOSED DUCT AND PIPE OPENINGS WITH A NON-COMBUSTIBLE MATERIAL, AND SEAL THEM AIR TIGHT TO PREVENT CONTAMINATION OF THE RESPECTIVE SYSTEMS DURING

CONSTRUCTION.

5. CONTRACTOR SHALL REMOVE AND DISPOSE OF OFFSITE ALL DEMOLISHED WORK IN ACCEPTABLE AND SAFE MANNER

AND SHALL KEEP ALL NON-WORK AREAS CLEAN AND SAFE.

6. ALL EXISTING EQUIPMENT AND CONNECTIONS THAT NEED TO BE TEMPORARILY DEMOLISHED FOR RIGGING AND / OR INSTALLATION SHALL BE REINSTALLED AND BROUGHT BACK TO ORIGINAL CONDITIONS PRIOR TO TEMPORARY

REMOVAL.

7. INSTALL WORK SO AS TO BE READILY ACCESSIBLE FOR OPERATION, MAINTENANCE AND REPAIR. MINOR DEVIATIONS FROM DRAWINGS MAY BE MADE TO ACCOMPLISH THIS, BUT CHANGES WHICH INVOLVE EXTRA COST SHALL NOT BE

MADE WITHOUT APPROVAL.

TERMABBREVIATION

AIR MOVEMENT AND CONTROL ASSOCIATIONAMCA

AMPERE (AMP, AMPS)AMP

COEFFICIENT OF PERFORMANCECOP

DEGREEDEG OR º

DRY BULBDB

EXHAUST GRILLEEG

ELECTRONICALLY COMMUTATED MOTORECM

ENERGY EFFICIENCY RATIOEER

FANF

FAHRENHEITºF

HEIGHTHGT OR H

HORSEPOWERHP

HOUR(S)HR

INCHES WATER GAUGEIN.-WG

KILOWATTKW

LOUVERL

MAXIMUMMAX

1000 BTUHMBH

MINIMUMMIN.

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATIONNEMA

OUNCEOZ

OUTSIDE AIROA

PERCENT%

POUNDSLBS

ROOF TOP UNITRTU

REVOLUTIONS PER MINUTERPM

SUPPLY AIRSA

SQUARESQ

UNIT HEATERUH

VOLT/PHASE/HERTZV/PH/HZ

WIDTHW

WET BULBWB

ADJUSTABLEADJ

EXTERNAL STATIC PRESSUREESP

FEETFT

INCHIN.

MINIMUM CIRCUIT AMPACITYMCA

MAXIMUM OVER CURRENT PROTECTIONMOCP

TRANSFER GRILLETG

ENTERING AIR TEMPERATUREEAT

LEAVING AIR TEMPERATURELAT

SQUARE-FEETSF

CUBIC FEET PER MINUTECFM

AMERICAN SOCIETY OF TESTING AND MATERIALSASTM

FULL LOAD AMPSFLA

TYPICALTYP

CONCRETE MASONRY UNITCMU

CAST IN PLACECIP

MEAN COINCIDENT WET BULBMCWB

MECHANICAL PIPE SYMBOLS

HWS

HWR

HEATING HOT WATER SUPPLY

HEATING HOT WATER RETURN

GM

INDICATES TO DEMOLISH

GAS METER

GAS SHUTOFF VALVE

EXTENT OF DEMOLITION

POINT OF CONNECTION

NOTE: ALL ITEMS MAY NOT BE USED IN PROJECT.

AIRFLOW, CFM

DIFFUSER/ REGISTER/ GRILLE NO. AS SHOWN

ON PLAN AND SCHEDULE

TEMPERATURE SENSORT

TEMPERATURE/HUMIDITY SENSORTH

1. THE CONTRACTOR SHALL REVIEW THE DRAWINGS AND SPECIFICATIONS FOR DEMOLITION REQUIREMENTS AND LAYOUT HIS WORK IN A COMPATIBLE AND COMPLEMENTARY MANNER. REMOVE ALL EQUIPMENT, DUCTWORK, SUPPORTS, CONTROLS, ACCESSORIES, ETC..., AND MECHANICAL ITEMS MADE OBSOLETE BY THESE ALTERATIONS AS SHOWN IN THE MECHANICAL DRAWINGS. ALL ITEMS TO BE REMOVED OR MODIFIED MAY NOT BE SHOWN, HOWEVER, THIS CONTRACTOR SHALL REMOVE ANY MECHANICAL WORK AS REQUIRED BY THE CONSTRUCTION OR AS DIRECTED BY THE GOVERNMENT CONTRACTING OFFICER. SURVEY THE AFFECTED AREAS BEFORE SUBMITTING A BID.

2. SCHEDULING OF DEMOLITION - COORDINATE SCHEDULING OF MECHANICAL DEMOLITION WORK WITH THE CONTRACTING OFFICER SO AS TO MINIMIZE DISRUPTION OF THE GOVERNMENT'S USE OF THE FACILITIES AND MAINTAIN THE CONSTRUCTION SEQUENCE. SEE DRAWINGS AND SPECIFICATIONS FOR ADDITIONAL INSTRUCTIONS CONCERNING

PHASING AND SEQUENCE OF WORK.

3. DEMOLISHED MATERIALS - UNLESS SPECIFICALLY REQUESTED BY THE GOVERNMENT, ALL DEMOLISHED MECHANICAL MATERIALS SHALL BECOME THE PROPERTY OF THE CONTRACTOR AND SHALL BE REMOVED FROM THE SITE AND

DISPOSED OF PROPERLY.

4. CUTTING AND PATCHING - PERFORM CUTTING AND PATCHING FOR MECHANICAL WORK SO AS TO MINIMIZE DAMAGE TO

CEILINGS, FLOORS AND WALLS.

5. THESE DRAWINGS ARE COMPILED BY THE ENGINEER FROM THE GOVERNMENT'S AS-BUILT RECORD DRAWINGS AND LIMITED FIELD VERIFICATION OF EXISTING CONDITIONS FOR THE PURPOSE OF INDICATING THE WORK REQUIRED AND ARE BELIEVED TO BE CORRECT. NOTWITHSTANDING, THE CONTRACTOR SHALL VERIFY ALL DUCTWORK, EQUIPMENT

LOCATIONS, DIMENSIONS AND ALL FIELD CONDITIONS AFFECTING HIS WORK.

6. WHERE MECHANICAL SYSTEMS PASS THROUGH THE DEMOLITION AREAS TO SERVE OTHER PORTIONS OF THE PREMISES, THEY SHALL REMAIN OR BE SUITABLY RELOCATED AND THE SYSTEM RESTORED TO NORMAL OPERATION.

ADVISE THE CONTRACTING OFFICER IMMEDIATELY IF SUCH CONDITIONS ARE UNCOVERED BEFORE PROCEEDING WITH

ADDITIONAL WORK.

7. PROTECT ALL EXISTING LIFE SAFETY SYSTEMS, FIRE ALARM AND PUBLIC ADDRESS SYSTEMS AND MAINTAIN THEM IN OPERATION THROUGHOUT THE PROGRESS OF THE WORK. NOTIFY THE CONTRACTING OFFICER IN WRITING IF SHUTDOWNS ARE REQUIRED PRIOR TO ANY OUTAGE OF SERVICE. WHERE THE DURATION OF A PROPOSED OUTAGE CANNOT BE TOLERATED BY THE GOVERNMENT, PROVIDE TEMPORARY CONNECTIONS AS REQUIRED MAINTAINING

SERVICE.

8. SURVEY THE AFFECTED AREAS BEFORE STARTING DEMOLITION AS ALL EXISTING CONDITIONS CANNOT BE

COMPLETELY DEPICTED ON THE DRAWINGS AND SOME UNUSUAL CONDITIONS EXIST.

9. IF ANY UNUSUAL STRUCTURAL OR ARCHITECTURAL CONDITIONS ARE ENCOUNTERED DURING DEMOLITION, CONTACT

THE CONTRACTING OFFICER FOR ASSISTANCE.

NOTE: ALL ABBREVIATIONS MAY NOT BE USED IN PROJECT.

NOTE: ALL ITEMS MAY NOT BE USED IN PROJECT.

HOT WATER COILHC

EXHAUST AIREA

RETURN AIRRA

SUPPLY GRILLESG

SG,RG,TG,EG

NOTE: ALL ITEMS MAY NOT BE USED IN PROJECT.

DROP

RISE

Ø

BD

SUPPLY DUCT TURNING DOWN

SUPPLY DUCT TURNING UP

INCLINED RISE WITH RESPECT TO AIRFLOW

DECLINED DROP WITH RESPECT TO AIRFLOW

CONICAL TEE

RADIUS ELBOW

INDICATES ROUND DUCTWORK

FLEXIBLE DUCT CONNECTION

MITERED ELBOW WITH TURNING VANES

MOTORIZED CONTROL DAMPER

BALANCING DAMPER

(ROUND OR RECTANGULAR)

(ROUND OR RECTANGULAR)

HORIZONTAL FIRE DAMPER

M

RETURN DUCT TURNING UP

(ROUND OR RECTANGULAR)

OUTSIDE AIR DUCT TURNING UP

(ROUND OR RECTANGULAR)

RETURN DUCT TURNING DOWN

(ROUND OR RECTANGULAR)

CEILING RETURN OR

TRANSFER REGISTER/GRILLES

VERTICAL FIRE DAMPER

CEILING SUPPLY DIFFUSERS

EXHAUST GRILLES

EXHAUST DUCT TURNING DOWN

(ROUND OR RECTANGULAR)

EXHAUST DUCT TURNING UP

(ROUND OR RECTANGULAR)

VERTICAL SMOKE DAMPER

VERTICAL FIRE/SMOKE DAMPER

FD

FD

SD

F/SD

ROUND DUCT TURNING DOWN

RECTANGULAR DUCT TURNING DOWN

WITH CHANGE OF DIRECTION

WITH CHANGE OF DIRECTION

TERMINATION OF DUCT WITH BRANCH CONNECTIONS

RECTANGULAR TO ROUND DUCT TRANSITION

SUPPLY AIR DUCTWORK

RETURN AIR DUCTWORK

EXHAUST AIR DUCTWORK

OUTSIDE AIR DUCTWORK

10X10 SQUARE OR RECTANGULAR DUCTWORK

VOLUME DAMPER

TAKEOFF WITH 45° THROAT

RETURN, EXHAUST OR TRANSFER AIR FLOW

SUPPLY AIR FLOW

DUCT CROSSING

SA

RA

EA

OA

MAKEUP AIR DUCTWORKMA

DUCT SMOKE DETECTORSD

P STATIC PRESSURE SENSOR

(ROUND OR RECTANGULAR)

OUTSIDE AIR DUCT TURNING DOWN

DPT DIFFERENTIAL PRESSURE TRANSDUCER

RETURN GRILLERG

DUCT SMOKE DETECTORD

VENT THROUGH ROOFVTR

HPS HIGH PRESSURE STEAM

(X)HPS EXISTING HIGH PRESSURE STEAM

HPC HIGH PRESSURE CONDENSATE

(X)HPC EXISTING HIGH PRESSURE CONDENSATE

BBD BOTTOM BLOW DOWN

CBD CONTINUOUS BLOW DOWN

BFW BOILER FEED WATER

EXISTING PUMPED CONDENSATE

NG NATURAL GAS

(X)PC

(X)CS EXISTING CHEMICAL FEED SUPPLY

3-WAY CONTROL VALVE

2-WAY CONTROL VALVE

BALL VALVE

BLOCK VALVE / SHUTOFF VALVE

GAUGE

PUMP

ANGLE VALVE

DRAIN

CHECK VALVE

GLOBE VALVE

FLOW TRANSMITTER

STEAM TRAP

RPZ

NC NORMALLY CLOSED

BOILER BLOWDOWN VALVE (SUPPLIED WITH BOILER)

BOILER STOP CHECK VALVE

FLANGED BUTTERFLY VALVE

FLANGE

FLOW MEASURING ORIFICE

FT

T

RPZ

MECHANICAL DUCTWORK LEGEND MECHANICAL GENERAL NOTES:

MECHANICAL DEMOLITION NOTES:

MECHANICAL LEGEND

MECHANICAL PIPE LEGEND

MECHANICAL ABBREVIATIONS

DUCT CONSTRUCTION AND LEAKAGE TESTING TABLE

SYSTEM

DUCT PRESSURE CLASS SUPPLY & EXHAUST

RETURN & OUTSIDE AIR DUCT TEST

PRESSURE

INCHES OF

WATER

COLUMN

NOTES

INCHES OF WATER ROUND/OVAL RECTANGULAR

SUPPLY DUCT

SUPPLY DUCT

(BETWEEN AHU

AND VAV)

SUPPLY DUCT

(DOWNSTREAM

OF VAV)

RETURN DUCT EXHAUST AND

RELIEF DUCT

OUTSIDE AIR

DUCT

DUCT SEAL

CLASS

DUCT LEAK

CLASS

DUCT SEAL

CLASS

DUCT LEAK

CLASS

DUCT SEAL

CLASS

DUCT LEAK

CLASS

PAINT BOOTH

EXHAUST - - - - -6 - A 3 A 6 - - 1 1

NOTES 1. TEST IN ACCORDANCE WITH SPECIFICATION SECTION 23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC, AND WITH THE PROCEDURES IN SMACNA HVAC AIR DUCT LEAKAGE TEST MANUAL.