AHU 17-19 SCHEDULES.pdf

PDF 357 KB Posted Apr 3, 2026

Attached to: Y1DZ--B3-Fourth Floor PACT Renovation Project # 659-26-800
Solicitation number: 36C24626R0031_2
Issued by: Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 6

About this file

Written by GovTribe AI · Apr 3, 2026

This is a mechanical legend and specification document for HVAC systems, specifically detailing a VA HVAC Phase III Upgrade/CAD file with background information.

The document provides comprehensive mechanical symbols, abbreviations, and notations used in HVAC design and construction drawings. The legend includes piping symbols for various system types (steam, hot water, chilled water, condenser water, fuel oil, refrigerant, and drainage), piping connections and fittings, directional flow indicators, equipment designations, and mechanical control symbols. The document contains general notes addressing the scope of work, which encompasses HVAC system upgrades including modifications to existing mechanical systems, installation of new equipment, and coordination with other building trades. Additional sections cover phasing procedures for construction sequencing and air handling unit schedules that specify equipment specifications, capacities, configurations, and operational parameters for multiple units. The air handling unit schedule continues on a second page with additional unit specifications. The document includes standard construction notes regarding contractor responsibilities, code compliance, coordination requirements, and quality assurance standards typical of federal facility upgrade projects. This appears to be a technical reference document supporting the design and construction specifications for a Department of Veterans Affairs HVAC modernization project.

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Other files

File	Type	Posted
36C24626R0031 0002.docx	DOCX document	Apr 23, 2026
RFIs phase 1 _4232026.docx	DOCX document	Apr 23, 2026
RFIs phase 1.docx	DOCX document	Apr 15, 2026
36C24626R0031 0001.docx	DOCX document	Apr 15, 2026
RFIs phase 1.docx	DOCX document	Apr 15, 2026
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VA44-32-14-S4.pdf	PDF	Apr 3, 2026
14H_0012.pdf	PDF	Apr 3, 2026
01 00 00-GENERAL.pdf	PDF	Apr 3, 2026
B3-P4.pdf	PDF	Apr 3, 2026
AHU-16 SCHEDULE.pdf	PDF	Apr 3, 2026
14H_0001.pdf	PDF	Apr 3, 2026
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14H_0011.pdf	PDF	Apr 3, 2026
01 45 00-QUALITY CONTROL.pdf	PDF	Apr 3, 2026
RFP 36C24626R0031_2.pdf	PDF	Apr 3, 2026
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14H_0002.pdf	PDF	Apr 3, 2026

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AIR HANDLING UNIT SCHEDULE

MECHANICAL LEGEND

AIR HANDLING UNIT SCHEDULE (CONTINUED)

Xref G:\05\05034-a VA HVAC Phase III Upgrade\CAD Files\Backgrounds\05034TBLK.dwg

AutoCAD SHX Text 1.

AutoCAD SHX Text %%uNOTES:

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FAN OUTLET VELOCITY SHALL NOT EXCEED 2500 FEET PER MINUTE.

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PROVIDE 50 PERCENT REPLACABLE PRE-FILTERS (PLEATED; 2-INCH THICK).

AutoCAD SHX Text ALL AHU MODULES TO BE INSERTED INTO PENTHOUSES VIA LOUVER OPENINGS OR MASONRY OPENINGS. VERIFY MODULE SIZES PRIOR TO COMMENCING WORK.

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UNIT SHALL BE DOUBLE-WALL CONSTRUCTON.

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SEE PLANS FOR DAMPER ARRANGEMENTS TO BE PROVIDED.

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TYPE

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UNIT

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LOCATION AND

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AREAS SERVED

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NUMBER

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UNIT

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MINIMUM

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OUTSIDE AIR

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CFM

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TYPE

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PERCENT

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EFF.

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INIT.

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PD IN W.C.

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DIRTY

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PRE-FILTER

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MAX. FACE

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(MAX)

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VEL. (FPM)

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SUPPLY AIR FAN DATA

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CFM

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TOTAL

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TOT. S.P.

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EXT. S.P.

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IN. W.G.

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IN. W.G.

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DRIVE

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TYPE

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SELECTION BASED ON

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DESCRIPTION

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NOTES

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MIN.

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HOUSED CENTRIFUGAL FAN.

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WHEEL

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TYPE

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RPM

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FAN

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(FPM)

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FPI

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COIL CAP.

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(MBH)

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MIN.

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ROWS

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(FT. W.G.)

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MAX. WPD

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GPM

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(%%DF)

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EWT

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WATER SIDE DATA

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MAX FACE

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VEL (FPM)

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MAX. APD

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(IN. W.G.)

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EAT (%%DF)

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AIR SIDE DATA

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CFM

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COOLING COIL DATA

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LAT (%%DF)

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LWT

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(%%DF)

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COIL CAP.

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(MBH)

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MIN.

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ROWS

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(#/HR)

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COND.

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WATER SIDE DATA

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MAX FACE

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VEL (FPM)

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MAX. APD

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(IN. W.G.)

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EAT (%%DF)

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(DRY BULB)

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AIR SIDE DATA

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CFM

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PREHEAT COIL DATA

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LAT (%%DF)

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PRESS.

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STEAM

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MCA

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MOCP

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PROVIDE STRUCTURAL SUPPORT AS REQUIRED RATED FOR LOAD.

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TYPE

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EFF.

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PERCENT

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FINAL

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INIT.

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PD IN W.C.

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(SQ. FT.)

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AREA

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MIN. FACE

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FINAL FILTER DATA

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PROVIDE INTEGRAL FACE & BYPASS DAMPERS FOR STEAM HEATING COILS.

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LOCATION AND

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AREAS SERVED

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NUMBER

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UNIT

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(LB/HR)

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OA DESIGN COND.

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PERCENT.

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UNIT DESCRIPTION

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TEMP. (DB)

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ROOM DESIGN COND.

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STEAM HUMIDIFIER DATA

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TEMP. (DB)

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LIMIT SETPT.

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DUCT HIGH

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AIR TEMP.

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AT HUMIDIFIER

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CAPACITY

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LOCATION

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MOUNTING

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PENTHOUSE/BUILDING 2

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AHU-12

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SUP. DUCT

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STEAM HUMIDIFIER

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BELT

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AutoCAD SHX Text 1-10

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AHU-12

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PENTHOUSE/BUILDING 2

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INDOOR

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AutoCAD SHX Text 0.1

AutoCAD SHX Text 0.28

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REPLACEABLE 2" PLEATED

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AutoCAD SHX Text 60.5

AutoCAD SHX Text 0.1

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AutoCAD SHX Text 457.1

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AutoCAD SHX Text 434.7

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AutoCAD SHX Text 59.4

AutoCAD SHX Text 0.5

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AutoCAD SHX Text 468.4

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AutoCAD SHX Text 3.0

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12" CARTRIDGE

AutoCAD SHX Text 0.70

AutoCAD SHX Text 0.28

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HORIZ. MODULAR AHU

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AHU-18

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MECH. ROOM/BUILDING 3

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INDOOR

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AutoCAD SHX Text 0.1

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REPLACEABLE 2" PLEATED

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AutoCAD SHX Text 81.5

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AutoCAD SHX Text 54.7

AutoCAD SHX Text 0.3

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AutoCAD SHX Text 30.5

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AutoCAD SHX Text 2.25

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BELT

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HORIZ. MODULAR AHU

AutoCAD SHX Text 1-9

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BELT

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AutoCAD SHX Text 1-9

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AHU-19

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MECH. ROOM/BUILDING 3

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INDOOR

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AutoCAD SHX Text 0.1

AutoCAD SHX Text 0.28

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REPLACEABLE 2" PLEATED

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AutoCAD SHX Text 54.6

AutoCAD SHX Text 0.5

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AutoCAD SHX Text 99.4

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AutoCAD SHX Text 2.5

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12" CARTRIDGE

AutoCAD SHX Text 0.70

AutoCAD SHX Text 0.28

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12" CARTRIDGE

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HORIZ. MODULAR AHU

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AFG

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ABOVE FINISH GRADE

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AFR

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ABOVE FINISH ROOF

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AHU

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AIR HANDLING UNIT

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BFF

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BELOW FINISH FLOOR

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BRITISH THERMAL UNIT/HOUR

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BTUH

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CENTER LINE

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ELECTRICAL CONTRACTOR

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EXHAUST FAN

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EXTERNAL STATIC PRESSURE

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ESP

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GENERAL CONTRACTOR

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HPDA

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HIGH PRESSURE DRIP APPARATUS

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LOW PRESSURE DRIP APPARATUS

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LPDA

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MECHANICAL CONTRACTOR

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MEDIUM PRESSURE DRIP APPARATUS

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MPDA

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OUTSIDE AIR

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RETURN AIR

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SUPPLY AIR

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SAF

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SUPPLY AIR FAN

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STATIC PRESSURE

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TOTAL STATIC PRESSURE

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TSP

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PIPING DESIGNATIONS

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CHILLED WATER SUPPLY

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CHILLED WATER RETURN

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DRAIN LINE

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HIGH PRESSURE STEAM SUPPLY

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HIGH PRESSURE CONDENSATE RETURN

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HOT WATER SUPPLY

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HOT WATER RETURN

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LOW PRESSURE STEAM SUPPLY

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LOW PRESSURE CONDENSATE RETURN

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MEDIUM PRESSURE STEAM SUPPLY

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MEDIUM PRESSURE CONDENSATE RETURN

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PUMPED CONDENSATE RETURN

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VENT LINE TO ATMOSPHERE

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EXISTING TO BE REMOVED

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EXISTING TO REMAIN

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FLOOR DRAIN

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DIRECTION OF FLOW

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COMPANION FLANGE

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BALL VALVE

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BALANCING VALVE - PLUG TYPE

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AUTOMATIC CONTROL VALVE - 3-WAY

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AUTOMATIC CONTROL VALVE - 2-WAY

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NON-SLAM CHECK VALVE

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PIPE CAP

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PIPE TURNING DOWN

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PIPE TURNING UP

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PRESSURE REDUCING VALVE

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STEAM PRV

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STRAINER WITHOUT BLOWDOWN VALVE

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SWING CHECK VALVE

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TEE WITH BRANCH OFF BOTTOM OF MAIN

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TEE WITH BRANCH OFF TOP OF MAIN

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UNION

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CHWS

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CHWR

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(E) CWS

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(E) CWS

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HPS

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HWR

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HWS

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OUTSIDE AIR

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LOW PRESSURE SUPPLY

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EXISTING TO BE REMOVED

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EXISTING TO REMAIN

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EXHAUST AIR

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LPS

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MPS

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FLEXIBLE PIPING CONNECTION

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(E) EA

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(E) EA

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POINT OF DEMOLITION

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PIPING SYMBOLS

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DUCTWORK DESIGNATIONS

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DUCTWORK SYMBOLS

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ABBREVIATIONS

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MISCELLANEOUS SYMBOLS

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CONNECT TO EXISTING

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DEMOLITION NOTES

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SPECIFIC OR NEW WORK NOTES

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REVISION NOTES

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RECTANGULAR DUCT

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SHEET ON WHICH DETAIL OR

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SHEET ON WHICH DETAIL OR

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DETAIL OR SECTION NUMBER

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ROUND DUCT

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FLAT-OVAL DUCT

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SECTION APPEARS

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SECTION IS CUT

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AutoCAD SHX Text 12x12

AutoCAD SHX Text 12"%%C

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XX.XX

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XX.XX

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AUTOMATIC FLOW LIMITING VALVE

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DIFFERENTIAL PRESSURE SENSOR

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PRESSURE SENSOR

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SHUT-OFF VALVE (SEE SPECS AND DETAILS FOR TYPE)

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STEAM TRAP (LOW PRESSURE)

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STEAM TRAP (MEDIUM/HIGH PRESSURE)

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FLOW SENSOR

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TEMPERATURE SENSOR

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FIRE DAMPER W/ACCESS DOOR

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MANUAL VOLUME DAMPER

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ACCESS DEVICE - SEE SPECIFICATIONS

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DUCT MOUNTED SMOKE DETECTOR

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SUPPLY DUCT TURNING UP

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RETURN/TRANSFER DUCT TURNING UP

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EXHAUST DUCT TURNING UP

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RETURN/TRANSFER DUCT TURNING DOWN

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EXHAUST DUCT TURNING DOWN

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SUPPLY DUCT TURNING DOWN

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FLEXIBLE DUCT (RUNOUTS)

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PCR

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HPR

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MPR

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LPR

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ABOVE FINISH FLOOR

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AFF

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ELBOW WITH TURNING VANES

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AutoCAD SHX Text 12/12

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STATIC PRESSURE SENSOR

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AIR FLOW STATION

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UNIT SHALL BE DRAW-THRU TYPE.

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PENTHOUSE/BUILDING 3

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AHU-18

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AutoCAD SHX Text 13.5

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SUP. DUCT

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STEAM HUMIDIFIER

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PENTHOUSE/BUILDING 3

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AHU-19

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SUP. DUCT

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STEAM HUMIDIFIER

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BELT

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AutoCAD SHX Text 1-9

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AHU-17

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PENTHOUSE/BUILDING 3

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INDOOR

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AutoCAD SHX Text 0.1

AutoCAD SHX Text 0.28

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REPLACEABLE 2" PLEATED

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AutoCAD SHX Text 60.5

AutoCAD SHX Text 0.1

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AutoCAD SHX Text 314.4

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AutoCAD SHX Text 302.4

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AutoCAD SHX Text 59.3

AutoCAD SHX Text 0.7

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AutoCAD SHX Text 322.9

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AutoCAD SHX Text 3.0

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12" CARTRIDGE

AutoCAD SHX Text 0.70

AutoCAD SHX Text 0.28

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HORIZ. MODULAR AHU

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PENTHOUSE/BUILDING 3

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AHU-17

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SUP. DUCT

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STEAM HUMIDIFIER

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FINAL FILTER SCHEDULE TO BE INSTALLED IN SUPPLY DUCT.

AutoCAD SHX Text M0

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EHM

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EHM

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GENERAL NOTES, LEGEND,

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AND SCHEDULE

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1. BUILDING #2: BUILDING #2: a. AHU-12 TO BE REMOVED AND REPLACED. NEW AHU TO SERVE SAME AHU-12 TO BE REMOVED AND REPLACED. NEW AHU TO SERVE SAME SPACES AND FUNCTIONS AS EXISTING. UNIT IS A 100% OUTSIDE AIR UNIT WITH STEAM PREHEAT AND CHILLED WATER COOLING COILS. UNIT CONTAINS DUCT MOUNTED HUMIDIFIER. UNIT IS LOCATED IN MECHANICAL PENTHOUSE. 2. BUILDING #3: BUILDING #3: a. AHU-17 TO BE REMOVED AND REPLACED. NEW AHU TO SERVE SAME AHU-17 TO BE REMOVED AND REPLACED. NEW AHU TO SERVE SAME SPACES AND FUNCTIONS AS EXISTING. UNIT IS A 100% OUTSIDE AIR UNIT WITH STEAM PREHEAT AND CHILLED WATER COOLING COILS. UNIT CONTAINS DUCT MOUNTED HUMIDIFIER. UNIT IS LOCATED IN MECHANICAL PENTHOUSE. b. AHU-18 TO BE REMOVED AND REPLACED. NEW AHU TO SERVE SAME AHU-18 TO BE REMOVED AND REPLACED. NEW AHU TO SERVE SAME SPACES AND FUNCTIONS AS EXISTING. UNIT IS A PARTIAL RETURN AIR UNIT WITH STEAM PREHEAT AND CHILLED WATER COOLING COILS. NEW UNIT IS TO CONTAIN DUCT MOUNTED HUMIDIFIER. UNIT IS LOCATED IN MECHANICAL PENTHOUSE. c.. AHU-19 TO BE REMOVED AND REPLACED. NEW AHU TO SERVE SAME AHU-19 TO BE REMOVED AND REPLACED. NEW AHU TO SERVE SAME SPACES AND FUNCTIONS AS EXISTING. UNIT IS A PARTIAL RETURN AIR UNIT WITH A CHILLED WATER COOLING COIL. NEW UNIT IS TO CONTAIN DUCT MOUNTED HUMIDIFIER. UNIT IS LOCATED IN MECMECHANICAL PENTHOUSE. 3. EXISTING PNEUMATIC CONTROLS TO BE REPLACED WITH NEW PNEUMATIC EXISTING PNEUMATIC CONTROLS TO BE REPLACED WITH NEW PNEUMATIC CONTROLS. ALL NEW CONTROLS TO BE TIED INTO CAMPUS-WIDE JOHNSON CONTROLS SYSTEM. 4. EXISTING ELECTRICAL STARTERS AND DISCONNECTS TO BE REPLACED FOR EXISTING ELECTRICAL STARTERS AND DISCONNECTS TO BE REPLACED FOR ALL UNITS. SEE ELECTRICAL PLANS. 5. EXISTING CONTROL VALVES TO BE REPLACED FOR ALL UNITS. EXISTING CONTROL VALVES TO BE REPLACED FOR ALL UNITS. 6. ALL EXISTING DUCTWORK, ASSOCIATED WITH THE REPLACED UNITS, TO BE ALL EXISTING DUCTWORK, ASSOCIATED WITH THE REPLACED UNITS, TO BE PRESSURE TESTED, SEALED, AND CLEANED. 7. ALL EXISTING DIFFUSERS, REGISTERS, AND GRILLES TO REMAIN. ALL EXISTING DIFFUSERS, REGISTERS, AND GRILLES TO REMAIN. 8.. CONTRACTOR TO VISIT SITE PRIOR TO SUBMITTING BID. CONTRACTOR TO CONTRACTOR TO VISIT SITE PRIOR TO SUBMITTING BID. CONTRACTOR TO VERIFY THAT EXISTING SPACE AVAILABLE IS ADEQUATE FOR THE INSTALLATION OF EACH NEW EQUIPMENT, DUCTWORK, ETC. 9. EQUIPMENT IS TO BE STAGED ON GROUNDS AT BUILDING SITE, NOT ON EQUIPMENT IS TO BE STAGED ON GROUNDS AT BUILDING SITE, NOT ON ROOF OUTSIDE OF PENTHOUSE.

AutoCAD SHX Text STORAGE OF EQUIPMENT WILL NOT BE PERMITTED ON EXISITNG ROOF UNLESS APPROVED BY RESIDENT ENGINEER.

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SCOPE OF WORK

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GENERAL NOTES

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PHASING PROCEDURE

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1. FACILITY SHALL BE FULLY OCCUPIED THROUGHOUT CONSTRUCTION. FACILITY SHALL BE FULLY OCCUPIED THROUGHOUT CONSTRUCTION. 2. ALL WORK SCHEDULES SHALL BE COORDINATED WITH THE VA CONTRACTING ALL WORK SCHEDULES SHALL BE COORDINATED WITH THE VA CONTRACTING OFFICER AND COTR. AT THE PRE-CONSTRUCTION MEETING, A TEN DAY WINDOW (END OF BUSINESS DAY FRIDAY TO OPENING OF BUSINESS DAY ON THE SECOND MONDAY) SHALL BE PROVIDED FOR THE REPLACEMENT OF EACH UNIT. ALL EQUIPMENT AND PERSONNEL MUST BE MOBILIZED ON SITE PRIOR TO THE START OF THE CONSTRUCTION PERIOD. 3. AVAILABLE WINDOWS FOR CONSTRUCTION ARE: AVAILABLE WINDOWS FOR CONSTRUCTION ARE: a. NOVEMBER 1, 2006 THROUGH JANUARY 1, 2007 b. MARCH 1, 2007 THROUGH APRIL 15, 2007

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File details come from the government source that posted it. Updated Apr 3, 2026.