Attachment C - Plans.pdf

M

EC

H

AN

IC

AL

T

IT

LE

S

H

EE

T

DATE: ISSUED FOR:

SHEET NUMBER:

August 27, 2025 - 3:30:11pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

T1.1

G

AR

FI

EL

D C

O U

N

TY

C O

R O

N

ER

'S O

FF

IC

E R

TU

M

ED

IC

IN

E

BO

W C

T

BS

MJH

08/29/2025

25-281

SI

LT

, C O

08/29/2025 FOR CONSTRUCTION

SHEET LEGEND

T1-1 TITLE SHEET

M0-1 MECHANICAL COVER SHEET

M1-1 MECHANICAL FLOOR PLAN

M3-1 MECHANICAL DETAILS & SCHEDULES

CODE NOTES:

1. APPLICABLE CODES INCLUDE THE 2021 VERSIONS OF THE IBC, IMC, IECC, IPC, IFGC AND THE 2023 VERSION OF THE NEC.

GENERAL CONSTRUCTION NOTES:

1. THE SCOPE OF WORK FOR THIS PROJECT WILL INVOLVE INVOLVE THE REPLACEMENT OF THE 2-TON AMERICAN STANDARD/TRANE RTU UNITS WITH

NEW.

2. DEMOLITION INCLUDES THE REMOVAL OF THE EXISTING RTU UNITS AND ASSOCIATED EXTERIOR DUCTWORK IDENTIFIED IN THE PLANS.

3. COORDINATE STAGING AREA FOR CONSTRUCTION WITH THE OWNER.

4. THE CONTRACTOR WILL BE RESPONSIBLE FOR ALL WASTE DISPOSAL FOR THIS PROJECT. COORDINATE THE LOCATION OF WASTE DUMPSTERS

WITH THE OWNER.

5. THE CONTRACTOR IS TO VERIFY ALL DIMENSIONS AND ACCESS REQUIREMENTS FOR ALL NEW EQUIPMENT PRIOR TO ORDERING MATERIAL.

6. ANY WORK THAT DISTURBS OR ALTERS THE ROOF AND ROOFING MATERIAL IS TO BE RETURNED TO PRE-CONSTRUCTION CONDITIONS AND THE

ROOF MADE WEATHERTIGHT.

SCOPE OF NEW WORK / PROJECT BIDDING:

THE PROJECT WILL BE BID PER THE FOLLOWING SCOPE OF WORK:

1. REPLACE THE EXISTING GRADE MOUNTED 2-TON PACKAGED RTUS WITH 1-FOR-1 REPLACEMENTS AS SPECIFIED IN THE MECHANICAL PLANS

2. THE NEW RTUS WILL BE DAIKIN DP3UM2404031 UNITS OR EQUIVALENT.

3. THE EXISTING DISCONNECT AND ELECTRICAL SUPPLY SHALL BE REUSED.

4. THE EXISTING GAS SUPPLY SHALL BE REUSED.

5. NEW CONTRACTOR SUPPLIED EQUIPMENT STANDS SHALL BE FABRICATED AND INSTALLED TO ELEVATE NEW EQUIPMENT OFF GROUND.

6. NEW EXTERIOR INSULATED DUCT SHALL BE PROVIDED BETWEEN THE BUILDING EXTERIOR AND THE NEW RTU UNITS.

7. EQUIPMENT TO BE COMMISSIONED IN ACCORDANCE WITH THE IECC SECTION 408.

VICINITY MAP

OCCUPANCY CLASSIFICATION - "B" OCCUPANCY

BUILDING AREA - 3050 SQ. FT.

M0-1

A. SUBSTITUTIONS: SUBSTITUTION OF SPECIFIED EQUIPMENT WILL BE ALLOWED

THROUGH A PRIOR APPROVAL PROCESS INITIATED BY THE CONTRACTOR.

CONTRACTOR SHALL SUBMIT INTENDED SUBSTITUTION AT LEAST FIVE DAYS

PRIOR TO BID FOR APPROVAL FROM ENGINEER. SUBMITTAL SHALL INCLUDE

CAPACITIES, DIMENSIONS AND OPERATING INSTRUCTIONS FOR EACH PIECE OF

EQUIPMENT. SUBSTITUTION SHALL OCCUR AT NO COST TO THE OWNER.

CONTRACTOR IS RESPONSIBLE FOR COORDINATION OF APPROVED SUBSTITUTION

AND SHALL INCUR ALL COSTS ASSOCIATED WITH THE SUBSTITUTION INCLUDING

STRUCTURAL MODIFICATIONS, SPACE LAYOUT AND REDESIGN COSTS. SEE ALSO

DIVISION I GENERAL REQUIREMENTS.

EXAMINATION OF SITE, DRAWINGS, SPECIFICATIONS:

A. EXAMINE CAREFULLY THE SITE AND CONDITIONS OF THE SITE. PROVIDE ALL

NECESSARY EQUIPMENT AND LABOR TO INSTALL A COMPLETE WORKING SYSTEM

WITHIN THE SITE CONDITIONS.

B. EXAMINE THE DRAWINGS AND SPECIFICATIONS AND 5 DAYS PRIOR TO

BIDDING REPORT ANY ERRORS, OMISSIONS, INCONSISTENCIES, AND CONFLICTS

TO THE ENGINEER TO BE REMEDIED IN AN ADDENDUM TO THE PROJECT PRIOR TO

BID TIME.

C. DRAWINGS ARE DIAGRAMMATIC AND CATALOG NUMBERS GIVEN ARE FOR

REFERENCE ONLY. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING

THE CAPACITY OF THE EQUIPMENT MEETS THE DRAWING REQUIREMENTS AND

SHALL NOT DIMENSION FROM THE MECHANICAL, PLUMBING, OR PIPING

DRAWINGS.

D. THE LATEST ADOPTED VERSIONS OF THE INTERNATIONAL BUILDING CODES

SHALL BE USED AS REQUIRED. THIS WILL ALSO INCLUDE THE LATEST ADOPTED

VERSIONS OF THE MECHANICAL, PLUMBING, AND ENERGY CONSERVATION

CODES. ALL METHODS AND MATERIALS REQUIRED BY THESE CODES SHALL BE

REQUIRED BY THESE SPECIFICATIONS UNLESS INDICATED OTHERWISE. OTHER

APPLICABLE LOCAL CODES AND ORDINANCES SHALL BE AS REQUIRED AND IT

SHALL BE THE CONTRACTOR’S RESPONSIBILITY TO BE KNOWLEDGEABLE OF

THESE REQUIREMENTS.

E. WHERE INSTALLATION PROCEDURES OR ANY PART THEREOF ARE REQUIRED

TO BE IN ACCORDANCE WITH THE RECOMMENDATIONS OF THE MANUFACTURER

OF THE MATERIAL BEING INSTALLED, PRINTED COPIES OF THESE

RECOMMENDATIONS SHALL BE FURNISHED TO THE ENGINEER PRIOR TO

INSTALLATION. INSTALLATION OF THE ITEM WILL NOT BE ALLOWED TO PROCEED

UNTIL THE RECOMMENDATIONS ARE RECEIVED. FAILURE TO FURNISH THESE

RECOMMENDATIONS CAN BE CAUSE FOR REJECTION OF THE MATERIAL.

44” MOUNTING HEIGHT ABOVE

FINISHED FLOOR TO CENTER OF DEVICE

A AMPS

A.D. ACCESS DOOR

AAV AIR ADMITTANCE VALVE

ABV ABOVE

AC AIR CONDITIONING UNIT

AC ABOVE COUNTER

AD AREA DRAIN (SEE SYMBOLS)

A.F.C. ABOVE FINISHED CEILING

A.F.G. ABOVE FINISHED GRADE

AIC AMPERE INTERRUPTING

CAPACITY

AFCI ARC FAULT CIRCUIT

INTERRUPTERS

A.F.F. ABOVE FINISHED FLOOR

AHU AIR HANDLING UNIT

ALUM ALUMINUM

AP ACCESS PANEL OR DOOR

ATS AUTOMATIC TRANSFER SWITCH

AV AUDIO / VIDEO

AVG AVERAGE

AWG AMERICAN WIRE GAGE

BAS BUILDING AUTOMATION SYSTEM

BB BASEBOARD

BD BACK DRAFT DAMPER

BFP BACK FLOW PREVENTOR

BL BOILER

BLDG BUILDING

BLW BELOW

BOB BOTTOM OF BEAM

BOD BOTTOM OF DUCT

BOP BOTTOM OF PIPE

BSMT BASEMENT

BTU BRITISH THERMAL UNIT

C CHILLER

CAFCI COMBINATION ARC FAULT

CIRCUIT INTERRUPTERS

CAP CAPACITY

CB CIRCUIT BREAKER

CBV CIRCUIT BALANCING VALVE

CCT CORRELATED COLOR

TEMPERATURE

CKT CIRCUIT

CFH CUBIC FEET PER HOUR

CFM CUBIC FEET PER MINUTE

CHWR CHILLED WATER RETURN

CHWS CHILLED WATER SUPPLY

CI CAST IRON

CL CENTER LINE

CLG CEILING

CMU CONCRETE MASONRY UNIT

CO CLEAN OUT

COL COLUMN

COMP COMPRESSOR

CONC CONCRETE

COND CONDENSATE

CONN CONNECTION

CONT CONTINUATION

CONTR CONTRACTOR

CRI COLOR RENDERING INDEX

CT COOLING TOWER

CT CURRENT TRANSFORMER

CU CONDENSING UNIT

CU COPPER

CUH CABINET UNIT HEATER

CVB CONSTANT VOLUME BOX

CWR CONDENSER WATER RETURN

CWS CONDENSER WATER SUPPLY

DB DRY BULB

DEPT DEPARTMENT

DF DRINKING FOUNTAIN

DIA DIAMETER

DIAG DIAGRAM

DIFF DIFFERENTIAL

DISCH DISCHARGE

DIV DIVISION

DN DOWN

DS DUCT SILENCER

DWG DRAWING

DX DIRECT EXPANSION

(E) EXISTING

EA EXHAUST AIR GRILLE/REGISTER

EAT ENTERING AIR TEMPERATURE

EC ELECTRICAL CONTRACTOR

ECC ECCENTRIC

EF EXHAUST FAN

EFF EFFICIENCY

EL ELEVATION

ELEC ELECTRIC

ELEV ELEVATOR

EM EMERGENCY FUNCTION

ENT ENTERING

EMT ELECTRIC METALLIC TUBE

EQ EQUAL

EQUIP EQUIPMENT

EQUIV EQUIVALENT

ES END SWITCH

ESP EXTERNAL STATIC PRESSURE

ET EXPANSION TANK

EWC ELECTRIC WATER COOLER

EWT ENTERING WATER

TEMPERATURE

EX EXHAUST

EXPAN EXPANSION

EXT EXTERNAL

F DEGREES FAHRENHEIT

FA FREE AREA

FC FAN COIL UNIT

FC FOOTCANDLE

FCV FLOW CONTROL VALVE

FD FIRE DAMPER

FD FLOOR DRAIN

FIN FINISHED

FLA FULL LOAD AMPS

FLEX FLEXIBLE

FLR FLOOR

FOB FLAT ON BOTTOM

FOT FLAT ON TOP

FP FIRE PROTECTION

FP FIRE PUMP

FPM FEET PER MINUTE

FPS FEET PER SECOND

FS FLOW SWITCH

FSD FIRE/SMOKE DAMPER

FT FEET

FXC FLEXIBLE CONNECTION

GND GROUND

GA GAUGE

GAL GALLON

GALV GALVANIZED

GEC GROUND ELECTRODE

CONDUCTOR

GFCI / GFI GROUND FAULT CIRCUIT

INTERRUPTER

GC GENERAL CONTRACTOR

GPH GALLONS PER HOUR

GPM GALLONS PER MINUTE

GRS/LB GRAINS PER POUND

H 2O WATER

HB HOSE BIBB

HD HEAD (SEE SCHEDULES)

HP HEAT PUMP

HP HORSEPOWER

HR HOUR

HT HEIGHT

HTR HEATER

HWR HEATING WATER RETURN

HWS HEATING WATER SUPPLY

HX HEAT EXCHANGER

HZ HERTZ

ID INSIDE DIAMETER

IG ISOLATED GROUND

IN INCHES

INV INVERT

JBOX JUNCTION BOX

K KELVIN

KW KILOWATT

KVA KILO VOLT - AMPS

L LENGTH

LAT LEAVING AIR TEMPERATURE

LV LAVATORY

LB POUND

LD LINEAR DIFFUSER

LF LINEAR FEET

LIN LINEAR

LIQ LIQUID

LM LUMEN

LRA LOCKED ROTOR AMPS

LV LOUVER

LVG LEAVING

LWT LEAVING WATER TEMPERATURE

MBH THOUSANDS OF BTU PER HOUR

MC MECHANICAL CONTRACTOR

MCA MINIMUM CIRCUIT AMPACITY

MCB MAIN CIRCUIT BREAKER

MD MOTORIZED DAMPER

MDP MAIN DISTRIBUTION PANEL

MED MEDIUM

MFR MANUFACTURER

MIN MINIMUM

MISC MISCELLANEOUS

MLO MAIN LUG ONLY

MOCP MAXIMUM OVERCURRENT

PROTECTION

MTD MOUNTED

MUA MAKE-UP AIR UNIT

N NEUTRAL

NC NORMALLY CLOSED

NEG NEGATIVE

NIC NOT IN CONTRACT

NL NIGHT / SECURITY LIGHT - DO

NOT SWITCH

NO NORMALLY OPEN

NOM NOMINAL

NTS NOT TO SCALE

OA OUTSIDE AIR

OBD OPPOSED BLADE DAMPER

OC ON CENTER

OCC OCCUPIED

OCP OVER CURRENT PROTECTION

OD OUTSIDE DIAMETER

OL OVERLOAD

ORD OVERFLOW ROOF DRAIN

OZ OUNCE

PBD PARALLEL BLADE DAMPER

PD PRESSURE DROP

PH PHASE

POS POSITIVE PRESSURE

POS POINT OF SALES

PRV PRESSURE REDUCING VALVE

PS PRESSURE SWITCH

PSI POUNDS PER SQUARE INCH

PT PRESSURE TRANSMITTER

PTAC PACKAGED TERMINAL AIR

CONDITIONER

PV PLUG VALVE

PVC POLYVINYL CHLORIDE

QTY QUANTITY

RA RETURN AIR GRILLE / REGISTER

RCP REFLECTED CEILING PLAN

RD ROOF DRAIN

REL RELIEF

REQD REQUIRED

RF RETURN FAN

RH RELATIVE HUMIDITY

RHC REHEAT COIL

RLA RATED LOAD AMPS

RM ROOM

RPM REVOLUTIONS PER MINUTE

SA SUPPLY AIR GRILLE / REGISTER

SC SHORT CIRCUIT

SCA SHORT CIRCUIT AVAILABLE

SCCR SHORT CIRCUIT CURRENT

RATING

SCH SCHEDULE

SD SMOKE DAMPER

SEF SMOKE EXHAUST FAN

SF SUPPLY FAN

SH SENSIBLE HEAT

SH SHOWER

SP STATIC PRESSURE

SPD SURGE PROTECTION DEVICE

SPEC SPECIFICATION

SQ SQUARE

SS STAINLESS STEEL

SS SAFETY SHOWER

STD STANDARD

STL STEEL

SYS SYSTEM

TEMP TEMPERATURE

TR TRANSFER GRILLE / REGISTER

TR TAMPER RESISTANT

TT TEMPERATURE TRANSMITTER

TTB TELECOMMUNICATIONS

TERMINAL BACKBOARD

TYP TYPICAL

TX TRANSFORMER

UC UNDERCUT DOOR

UH UNIT HEATER

UNO UNLESS NOTED OTHERWISE

UNOCC UNOCCUPIED

UR URINAL

V VOLTS

VA VOLT AMPERE

VA VALVE

VAV VARIABLE AIR VOLUME UNIT

VFD VARIABLE FREQUENCY DRIVE

VRF VARIABLE REFRIGERANT FLOW

VOLT VOLTAGE

VTR VENT THROUGH ROOF

W WIDTH

W WATTS

W/ WITH

W/O WITHOUT

WB WET BULB

WC WATER COLUMN

WC WATER CLOSET

WG WATER GAUGE

WP WEATHERPROOF

WPIU WEATHERPROOF IN-USE

WSR WITHSTAND RATING

XFMR TRANSFORMER

SUBSTITUTIONS:RESPONSIBLE DIVISION:

UNLESS OTHERWISE INDICATED ALL HEATING, VENTILATING, AIR CONDITIONING, PLUMBING,

AND OTHER MECHANICAL EQUIPMENT, MOTORS, AND CONTROLS SHALL BE FURNISHED, SET

IN PLACE AND WIRED AS FOLLOWS:

ITEM FURNISHED SET POWER CONTROL

WIRED WIRED

EQUIPMENT 23 23 26 --

COMBINATION MAGNETIC

MOTOR STARTERS, MAGNETIC

MOTOR STARTERS, VFD'S AND

CONTACTORS 23(1) 26 26(2) 23

FUSED AND UNFUSED

DISCONNECT SWITCHES,

THERMAL OVERLOAD SWITCHES

AND HEATERS, MANUAL MOTOR

STARTERS 26 26 26 --

MANUAL-OPERATING AND

MULTI-SPEED SWITCHES 23 26 26 26

CONTROLS, RELAYS,

TRANSFORMERS 23 23 26 23

THERMOSTATS (LOW VOLTAGE)

AND TIME SWITCHES 23 23 26 23

THERMOSTATS (LINE VOLTAGE) 23 23 26 26

TEMPERATURE CONTROL PANELS 23 23 26 23

MOTOR AND SOLENOID VALVES,

DAMPER MOTORS, PE & EP

SWITCHES 23 23(2) -- 23(2)

PUSH-BUTTON STATIONS

AND PILOT LIGHTS 23 23(2) -- 23(2)

HEATING, COOLING,

VENTILATION AND AIR

CONDITIONING CONTROLS 23 23 26 23

EXHAUST FAN SWITCHES 23 26 26 23(2)

SUBSCRIPT FOOTNOTES:

1. MOTOR STARTER TO INCLUDE CONTROL TRANSFORMER, HOA SWITCH, (1) NO AND (1)NC

AUXILIARY CONTACT, AND “ON” AND “OFF” PILOT LIGHTS.

2. IF ITEM IS FOR LINE VOLTAGE, SET IN PLACE AND CONNECT UNDER DIVISION 26. WHERE

FACTORY MOUNTED ON EQUIPMENT OR ATTACHED TO PIPING OR DUCTS AND USING LINE

VOLTAGE FURNISH AND SET UNDER DIVISION 23, CONNECT UNDER DIVISION 26.

ABBREVIATIONS:

SECTION THROUGH RETURN DUCT

SECTION THROUGH SUPPLY OR OUTSIDE AIR DUCT

SUPPLY OR OUTSIDE AIR DUCT

ACCESS DOOR (BOTTOM OR SIDE)

ACOUSTICALLY LINED DUCT

FIRE DAMPER, SMOKE DAMPER, FIRE/SMOKE DAMPER

MANUAL VOLUME DAMPER

INCLINED DROP IN DIRECTION OF ARROW

INCLINED RISE IN DIRECTION OF ARROW

TRANSITION, RECTANGULAR TO ROUND

FLEXIBLE DUCT

IN-LINE FAN

TRANSITION, RECTANGULAR

SPIN-IN COLLAR INTO ADAPTER ON TOP OF DUCT

CEILING SUPPLY AIR REGISTER/GRILLE

SIDEWALL SUPPLY AIR REGISTER (SR)

ELBOW TURNED DOWN

ELBOW TURNED UP

ELBOW, RADIUS TYPE

ELBOW, SQUARE OR RECTANGULAR TYPE

WITH AIRFOIL TURNING VANES

CEILING RETURN AIR REGISTER (RR)

OPEN END DUCT

FLEXIBLE CONNECTION

SIDEWALL RETURN AIR REGISTER (RR)

VD

FXC

RR

DD

PIPE DROPPING DOWN

PIPE RISING UP

DIRECTION OF FLOW

RELIEF/SAFETY VALVE

FLOW METER-VENTURI

FLOW METER-ORIFICE

AUTOMATIC AIR VENT (EXTEND

AUTOMATIC FILL VALVE

DISCHARGE TO DRAIN)

MANUAL AIR VENT

CONCENTRIC REDUCER

ECCENTRIC REDUCER

STEAM LEAK DETECTOR

TPV

S

CBV

R D

STRAINER

MV

AV

GAS COCK

AQUASTAT

VB VACUUM BREAKER

EXPANSION LOOP

GAS PRESSURE

STEAM TRAP

ANCHOR

EJ

TT

FS

TH

PT/PS

G

PRESSURE SWITCH

& SYPHON (STEAM)

GAUGE COCK

TRANSMITTER OR

THERMOMETER

EXPANSION JOINT

TEMPERATURE

FLOW SWITCH

GUIDE

A

DIRECTION OF PITCH-RISE OR

DROP

STRAINER WITH BLOW

OFF VALVE

UNION - SCREWED OR FLANGED

FLOAT OPERATED

CO

CD

T

CARBON MONOXIDE

CARBON DIOXIDE

THERMOSTAT

CONTROL VALVE

REGULATOR

TRANSMITTER

PRESSURE

GAUGE WITH

FSD FIRE SMOKE DAMPER

RELIEF VALVE

SOLENOID VALVE

TEMPERATURE/PRESSURE

DIAPHRAGM VALVE

BALANCING VALVE

BALL VALVE

GLOBE VALVE, ANGLE

GATE VALVE, ANGLE

LIFT CHECK VALVE

SWING CHECK VALVE

GATE VALVE

BUTTERFLY VALVE

PLUG VALVE

GLOBE VALVE

CIRCUIT SETTING

BALANCING VALVE

THREE WAY CONTROL VALVE

TWO WAY CONTROL VALVE

PRESSURE REDUCING

VALVE (PRV)

EXISTING EQUIPMENT OR

PIPE TO BE REMOVED.

CS CONDENSER WATER SUPPLY

CR CONDENSER WATER RETURN

R REFRIGERANT LIQUID AND VAPOR LINE

RS REFRIGERANT SUCTION / VAPOR

HOT WATER SUPPLY (HWS)

HOT WATER RETURN (HWR)

HPS HEAT PUMP SUPPLY

HPR HEAT PUMP RETURN

VENT PIPING

D DRAIN

NATURAL GAS

SMS SNOWMELT SUPPLY

SMR SNOWMELT RETURN

GAS GAS GAS

CHWS CHILLED WATER SUPPLY

CHWR CHILLED WATER RETURN

LINE DESIGNATION SYMBOLS

MECHANICAL ELEMENTS / VALVING

SMOKE DAMPER

FIRE / SMOKE DAMPERFSD

SD

RH REFRIGERANT HIGH PRESSURE VAPOR

CA COMPRESSED AIR

FD - SD

- FSD

SECTION THROUGH EXHAUST AIR DUCT

HX

S

AIR VENT

HYDRAULIC SEPARATOR

AIR SEPARATOR

HEAT EXCHANGER

DIGITAL SENSOR

OR PUMP

HVAC & DUCTWORK SYMBOLS

POINT OF CONNECTION OF NEW TO EXISTING

G

M

EC

H

AN

IC

AL

C

O

VE

R S

H

EE

T

DATE: ISSUED FOR:

SHEET NUMBER:

August 28, 2025 - 2:41:43pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

G

AR

FI

EL

D C

O U

N

TY

C O

R O

N

ER

'S O

FF

IC

E R

TU

M

ED

IC

IN

E

BO

W C

T C

T.

GW

MJH

08/29/2025

25-281

SI

LT

, C O

LO

R

AD

O

08/29/2025 FOR CONSTRUCTION

RTU

RTU

EXISTING RTU AND DUCTWORK

EXTERIOR OF BUILDING TO BE

DEMOLISHED. MAINTAIN HORIZONTAL

DUCT THOUGH BUILDING EXTEROR, GAS

SERVICE, AND ELECTRICAL SERVICE TO

UNIT.

ALL DUCTWORK WITHIN THE SPACE TO

REMAIN.

ALL DUCTWORK WITHIN THE SPACE TO

REMAIN.

EXISTING UNIT TO BE REPLACED ONE-FOR-ONE WITH A NEW

UNIT. NEW UNIT TO BE MOUNTED ON ELEVATED STRUCTURE.

RECONNECT TO EXISTING HORIZONTAL DUCT THROUGH

EXTERIOR WALL OF BUILDING. REFER TO DETAIL ON M3-1 FOR

MORE INFORMATION.

EXISTING RTU AND DUCTWORK

EXTERIOR OF BUILDING TO BE

DEMOLISHED. MAINTAIN HORIZONTAL

DUCT THOUGH BUILDING EXTERIOR,

GAS SERVICE, AND ELECTRICAL

SERVICE TO UNIT.

EXISTING UNIT TO BE REPLACED ONE-FOR-ONE WITH A NEW

UNIT. NEW UNIT TO BE MOUNTED ON ELEVATED STRUCTURE.

RECONNECT TO EXISTING HORIZONTAL DUCT THROUGH

EXTERIOR WALL OF BUILDING. REFER TO DETAIL ON M3-1 FOR

MORE INFORMATION.

DATE: ISSUED FOR:

SHEET NUMBER:

August 28, 2025 - 2:41:43pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

M1-1

M

EC

H

AN

IC

AL

FL

O O

R P

LA

N

G

AR

FI

EL

D C

O U

N

TY

C O

R O

N

ER

'S O

FF

IC

E R

TU

M

ED

IC

IN

E

BO

W C

T C

T.

SI

LT

, C

O

LO

R

AD

O

MECHANICAL - FLOOR PLAN

SCALE:

NORTH

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

GW

MJH

08/29/2025

25-281

AS SHOWN

08/29/2025 FOR CONSTRUCTION

---- ---- 1

WEST SIDE RTU

EAST SIDE RTU

PACKAGED ROOF TOP UNIT ON GRADE MOUNTED EQUIPMENT STAND.

N.T.S.

8" CONCRETE SLAB WITH #3 REBAR.

EXTEND A MINIMUM OF 6" OUT

FROM EDGE OF EQUIPMENT STAND

CONTRACTOR

FABRICATED

EQUIPMENT

STAND.

EXISTING

BUILDING

EXTERIOR

WALL

PROVIDE HORIZONTAL

BRACING BETWEEN

EQUIPMENT STAND AND

EXISTING BUILDING

STRUCTURE.

EXISTING DUCT

IN BUILDING TO

REMAIN

CONNECT NEW SUPPLY

AND RETURN TO EXISTING

IMMEDIATELY AS IT

EXITS/ENTERS BUILDING.

HEIGHT OF STAND TO BE DETERMINED ON SITE THAT

SUPPLY AND RETURN DUCT FROM RTU WILL BE AT THE

SAME ELEVATION AS THE EXISTING DUCTS EXITING THE

BUILDING.

NOTES:

1. EQUIPMENT STAND TO BE CONSTRUCTED BY CONTRACTOR USING ASTM A500 2" SQUARE STRUCTURAL

TUBE STEEL.

2. EQUIPMENT STAND TO BE PERMANENTLY SECURED TO THE CONCRETE PAD.

3. EQUIPMENT STAND TO BE SIZED SUCH THAT HORIZONTAL SUPPLY AND RETURN DUCT ARE AT THE SAME

ELEVATION AS THE HORIZONTAL DUCTWORK EXITING THE BUILDING. OVERALL HEIGHT OF EQUIPMENT

AND STAND NOT TO EXCEED 16'

N.T.S.

EXTERIOR DUCT INSULATION DETAIL

SUPPLY/RETURN DUCT

2" RIGID BOARD DUCT

INSULATION. MINIMUM

RATING OF R-12.

EDGES SEALED WITH

VAPOR-RETARDER TAPE

ALUMINUM WEATHERPROOF

JACKET. VAPOR TIGHT AND

UV-RESISTANT.

DATE: ISSUED FOR:

SHEET NUMBER:

August 28, 2025 - 2:41:45pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

M3-1

M

EC

H

AN

IC

AL

D

ET

AI

LS

S C

H

ED

U

LE

S

G

AR

FI

EL

D C

O U

N

TY

C O

R O

N

ER

'S O

FF

IC

E R

TU

M

ED

IC

IN

E

BO

W C

T C

T.

GW

MJH

08/29/2025

25-281

SI

LT

, C O

LO

R

AD

O

08/29/2025 FOR CONSTRUCTION

AS SHOWN