50-MH104.pdf
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- Attached to
- Y1DA--Expand and Renovate Emergency Department B50 Minor Construction - Tucson VAMC (VA-24-00001448)
- Solicitation number
- 36c77623r0191
About this file
This document is a set of mechanical ventilation plans and specifications for the Expand and Renovate Emergency Department B50 project at the Tucson VAMC.
The plans detail the installation of new mechanical equipment including an air handling unit (AHU-5), two exhaust fans (EF-2A and EF-2B), a ductless split system (DFSS-AHU-5), and associated piping and ductwork. Key requirements include installing the HEPA filter housing per the detail provided, maintaining manufacturer's clearance requirements for the DFSS and ACCU units, and extending the exhaust ductwork 15 feet from the outside air intake. The plans also specify labeling the exhaust ductwork for the isolation suites as "communicable disease contaminated air". The mechanical systems are to be installed during two construction phases as indicated on the phasing plan.
This project is part of the VA's solicitation 36c77623r0191 for the "Y1DA--Expand and Renovate Emergency Department B50 Minor Construction" at the Tucson VAMC.
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Text version
FF
EE
DD
CC
BB
2 3.5 4.5 5.5 6.5 7.5
II
HH
JJ
GG
8.58.3
(E) 12"∅ EA DN
27x24x60
PLENUM
F-2A/2BF-2A/2B
EF-2AEF-2A
900 CFM
EF-2BEF-2B
900 CFM
13ø
13ø
100x18 RA DN 80x24 SA DN
SERVICE
VESTIBULE
HUM-5
78x8 EA DN
(E) 13"∅ EA DN
ELECTRICAL EQUIPMENT
(REFER TO ELECTRICAL
DRAWINGS)
AHU-5AHU-5
20170 CFM
CAPPED
x3
EA
4" CHWS /
CHWR DN
CHILLED
WATER COIL
PULL SPACE
3 4
UP
UP
EXISTING ROOF TOP
EQUIPMENT
(TYPICAL)
EXISTING 3-STORY ROOF
NEW 1-STORY ROOF
NEW CANOPY
ACCU-1025
2 TONS
1" D
ACCU-AHU-5
2 TON
DFSS-AHU-5
2 TON
A. COORDINATE ALL MECHANICAL SERVICE OUTAGES WITH VA/COR.
B. EXISTING CONDITIONS ARE SHOWN BASED ON INFORMATION OBTAINED FROM FIELD SURVEYS, EXISTING BUILDING DOCUMENTS, AND STAFF. VERIFY EXISTING CONDITIONS AND REPORT ANY CONFLICTS BEFORE PROCEEDING.
C. DURING CONSTRUCTION, PROVIDE TEMPORARY CLOSURES ON ALL EXHAUST AIR DUCT OPENINGS BY SEALING WITH A DISPOSABLE POLYETHYLENE SHEETING TO PREVENT CONSTRUCTION DUST FROM ENTERING DUCTWORK SYSTEM.
D. EXHAUST AIR DISCHARGE SHALL BE A MINIMUM OF 25 FEET FROM ANY OUTSIDE AIR INTAKE.
E. ALL EXHAUST DUCTWORK SERVING THE ISOLATION SUITES SHALL BE CLEARLY LABELED AS "COMMUNICABLE DISEASE
CONTAMINED AIR" EVERY 50 FEET.
F. AHU-5 IS A CUSTOM UNIT, COORDINATE ALL DUCT OPENINGS WITH STRUCTURAL DRAWINGS.
GENERAL MECHANICAL VENTILATION NOTES
MECHANICAL KEY NOTES
1. BAG-IN / BAG-OUT HEPA FILTER. PROVIDE ALL MAINTENANCE AND SERVICE ACCESS PER MANUFACTURER'S INSTRUCTIONS. REFER TO DETAIL #1 ON SHEET 50-M505 FOR HEPA FILTER HOUSING DETAIL.
2. REFRIGERANT LIQUID / SUCTION PIPING DN TO DFSS-1025. SIZE PER MANUFACTURER'S RECOMMENDATIONS.
REFER TO DETAIL #10 ON SHEET 50-M501 FOR ROOF SLEEVE DETAIL.
3. MAINTAIN MANUFACTURER'S RECOMMENDED CLEARANCE REQUIREMENTS.
4. INSTALL DFSS AND ACCU PER MANUFACTURER'S INSTALLATION INSTRUCTIONS. REFER TO DETAIL #5 ON SHEET 50-M505 FOR MORE INFORMATION ON DFSS. REFER TO DETAIL #8 ON SHEET 50-M502 FOR ROOF MOUNTED
EQUIPMENT RAIL. INSTALL DFSS 7'-0" ABOVE FINISHED FLOOR.
5. INSTALL AHU-5 PER MANUFACTURER'S INSTALLATION INSTRUCTIONS DURING PHASE 1, REFER TO PHASING PLAN ON SHEET 50-MC101. MOUNT AHU-5 ON CONCRETE CURB, REFER TO STRUCTURAL DRAWINGS FOR CURB DETAILS.
REFER TO DETAIL #3 ON SHEET 50-M505 FOR MORE INFORMATION ON AHU-5.
6. INSTALL EF-2A & 2B PER MANUFACTURER'S INSTALLATION INSTRUCTIONS DURING PHASE 2, REFER TO PHASING PLAN ON SHEET 50-MC101. MOUNT EF-2A & 2B ON NEW ROOF CURBS. REFER TO DETAIL #9 ON SHEET 50-M503 FOR
UP-BLAST EXHAUST FAN.
7. EXHAUST FAN VFD LOCATED IN ELECTRICAL ROOM 342A, REFER TO SHEET 50-MP103.
8. INSTALL EXPANSION JOINT PIPING, REFER TO ARCHITECTURAL DRAWINGS FOR EXPANSION JOINT LOCATION.
9. EXTEND EXHAUST AIR DUCTWORK 15 FEET AWAY FROM OUTSIDE AIR INTAKE.
10. MAKE FULL SIZE DUCT CONNECTIONS TO AHU.
11. 45 DEGREE CUT.
12. TERMINATE DUCT WITH 45 DEGREE CUT FACING AND WIRE MESH SCREEN.
13. 1" DRAIN TO SPILL TO NEAREST ROOF DRAIN.
14. DUCT SUPPORTS. REFER TO DETAIL #4 ON SHEET 50-M505.
15. REVERSE OSMOSIS WATER DN, SEE PLUMBING DRAWINGS FOR MORE INFORMATION.
16. TERMINATE 3/4" CONDENSATE DRAIN OUT THROUGH AHU WALL WITH DOWN TURNED TYPE "K" COPPER ELBOW.
INSTALL INSECT SCREEN. INSTALL WATER-TIGHT PENETRATION SEAL.
17. REFRIGERANT LIQUID / SUCTION PIPING FROM DFSS-AHU-5 TO ACCU-AHU-5. SIZE PER MANUFACTURER'S
RECOMMENDATIONS. INSTALL WATER-TIGHT PENETRATION SEAL AT AHU WALL.
18. AHU STAIRS, REFER TO ARCHITECTURAL DRAWINGS FOR MORE INFORMATION.
X
N o n e e ig h th in c h o n e fo o t th re e in c h e s o n e fo o t o n e a n d o n e h a lf in c h e s o n e fo o t o n e in c h o n e fo o t th re e q u a rt e rs in c h o n e fo o t o n e h a lf in c h o n e fo o t th re e e ig h th s in c h o n e fo o t o n e q u a rt e r in c h o n e fo o t
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
A
B
C
D
E
F
Drawing Title Project Title
VA FORM 08-6231
Office of Facilities Management
U.S. Department of Veterans Affairs
STAMP
Date
Location
Building Number Checked Drawn Drawing Number
Project Number
BID SET
Approved: Director
Approved: Associate Director
Approved: Assistant Director
Approved: Assoc. Director for Patient Care Service/Nurse Executive
Approved: Deputy Assoc. Director of Patient Care Services
Approved: Chief of Staff
Approved: Deputy Chief of Staff
Approved: Chief of Engineering
Approved:
Approved:
ARCHITECT/ENGINEER/CONSULTANTS:
Bancroft Project No.
SAVAHCS, TUCSON, AZ 85723
3300 Dundee Road
Northbrook, IL 60062
T: 847.952.9362
KEY PLAN
04/30/2024MECHANICAL - VENTILATION
OVERALL PLAN, ROOF
EXPAND AND RENOVATE
EMERGENCY DEPARTMENT B50
50 DGG TE
50-MH104
678-331
8-
E X
P A
N D
A N
D R
E N
O V
A T
E E
M E
R G
E N
C Y
D E
P A
R T
M E
N T
B
A
D D
E N
D U
M
N 1/8" = 1'-0"
MECHANICAL - VENTILATION OVERALL PLAN, ROOF
0 4' 8' 16'
Revisions: Date:
BID SET 05/01/2023
ADDENDUM 1 04/30/2024
| Sheets |
| 50-M505 - MECHANICAL - DETAILS |
| 50-MH104 - MECHANICAL - VENTILATION OVERALL PLAN, ROOF |
File details come from the government source that posted it. Updated .