60040262.pdf
PDF 373 KB Posted
- Attached to
- BEQ Repair AS4212
- Solicitation number
- N4008525R2620
About this file
This mechanical drawing (Sheet M-302) is a typical section view of a mechanical room for a Bachelor Enlisted Quarters (BEQ) repair project at Marine Corps Base Camp Lejeune, North Carolina. The detailed technical drawing shows vertical mechanical systems and infrastructure across multiple floors, including HVAC, ductwork, piping, and mechanical equipment placement.
Key technical details include provisions for dedicated outdoor air systems (DOAS), fire dampers at floor slab penetrations, motorized dampers with emergency shutdown capabilities, hot water and chilled water piping routes, and specific installation requirements for equipment like dehumidifiers and unit heaters. The drawing includes precise dimensional annotations, equipment locations, and specific plan notes detailing coordination requirements for ductwork, piping, and mechanical system installations. The project is associated with construction contract N40085-23-B-0035 and involves comprehensive mechanical system upgrades for the BEQ repair project.
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Text version
ATTIC DECK
31' - 10"
3RD FLOOR
21' - 4"
2ND FLOOR
10' - 8"
1ST FLOOR
0' - 0"
M M
FD
FD
FD
FD
VFD VFD
HVAC
CP
DH-2
10"x10"
10"x10"
16"x36"
16"x36"
DOAS-2 16"x16"
"x
"x
DOAS-4
DOAS-6
"x
VFD VFD
HVAC
CP
DH-4
VFD VFD
HVAC
CP
DH-6
"x
"x
"x
16"x36"
16"x36"
"x
16"x36"
16"x36"
"x
16"x16"
10"x10"
10"x16"
3/ 4" ø H
W R
3/ 4" ø H
W S
1/
2" ø
C H
W R
1/
2" ø
C H
W S
3/ 4" ø H
W R
3/ 4" ø H
W S
4"ø CHWS 4"ø CHWR 2"ø HWR
2"ø HWS 3/
4" ø
H W
R 3/
4" ø
H W
S
1/
2" ø
C H
W R
1/
2" ø
C H
W R
3/ 4" ø H
W R
3/ 4" ø H
W S
MANUAL VOLUME
DAMPER (TYP)
FD FD
"x
"x
"x
16"x16"
3/4"Ø HWS/R
8' - 0"
CATWALK
MAINTAIN CATWALK
CLEARANCE ZONE
L-81
5 5
5 5
5 5
SYM. DESCRIPTION DATE APP.
REVISIONS
DR.
DES.
CHK.
SUBMITTED BY:
DESIGN DIR.
APPROVED: PWO OR OICC
SATISFACTORY TO:
DATE
DATE
DEPARTMENT OF THE NAVY NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND
CAMP LEJEUNE, NORTH CAROLINA
MARINE CORPS BASE
SIZE CODE IDENT. NO. NAVFAC DRAWING NO.
E1 80091
CONSTR. CONTR. NO.
AS NOTEDSCALE SHEET
M B
F A
N O
SPEC.
M-302
MAS
JDL
MORGAN HUNTER
LWM
REPAIR BEQ AS4212
TYPICAL SECTION VIEW AT MECHANICAL ROOM
60040262 N40085-23-B-0035
3/8" = 1'-0" B1
TYPICAL SECTION VIEW AT MECHANICAL ROOM
# PLAN NOTES
1 EXISTING LOUVER INSTALLED IN GABLE. (TYP)
2 PROVIDE 1'-0" DEEP SEMICIRCULAR INSULATED PLENUM SIZED
TO MATCH DIMENSIONS OF THE LOUVER AND CONNECT TO
LOUVER. SEE ARCHITECTURAL DRAWINGS FOR LOUVER
LOCATION AND SPECIFICATION. COORDINATE ANY
STRUCTURAL MODIFICATION TO WOODEN ROOF TRUSSES,
SUPPORTS AND BRACING THAT WILL BE REQUIRED TO ROUTE
DUCT TO LOUVERS AND TO INSTALL LOUVERS IN
GABLE/DORMER WALL.
3 PROVIDE DEHUMIDIFIER MOUNTED ON WALL AT 60" ON SHELF.
PIPE TO FLOOR DRAIN IN MECHANICAL ROOM. COORDINATE
EXHACT LOCATION WITH ALL OTHER EQUIPMENT TO PROVIDE
PROPER CLEARANCES.
4 PROVIDE FLOOR MOUNTED DEDICATED OUTDOOR AIR
SYSTEM (DOAS). ROUTE SUPPLY AND RETURN DUCTWORK AS
SHOWN. COORDINATE EXACT EQUIPMENT LOCATION AND
ROUTING WITH ALL EQUIPMENT IN ROOM. MECHANICAL
CONTRACTOR TO VERIFY THAT DOAS INSTALLATION AND
REMOVAL THROUGH EXTERIOR DOOR IS POSSIBLE.
5 PROVIDE FIRE DAMPER IN VERTICAL DUCT AT PENETRATIONS
THROUGH 2ND FLOOR SLAB, 3RD FLOOR SLAB, AND ATTIC
SLAB.
6 PROVIDE MOTORIZED DAMPERS AND ACCESS DOORS IN
VERTICAL DUCT RISERS WITHIN THE MECHANICAL ROOMS ON
THE 3RD FLOOR TO BE TIED INTO THE HVAC EMERGENCY
SHUTDOWN PER ATFP PROTOCOL.
7 ROUTE 3/4" HOT WATER PIPING THROUGH CHASE TO HOT
WATER UNIT HEATER IN LAUNDRY ROOM IN CORE AREA.
COORDINATE EXACT ROUTING WITH ALL OTHER DUCTWORK
AND PIPING IN CHASE.
8 CHW AND HW PIPING UP FROM BELOW. ROUTE CHW AND HW
PIPING TO DOAS IN MECHANICAL ROOM. MAIN CHW AND HW
PIPING TO CONTINUE UP THROUGH FLOOR TO LEVELS ABOVE.
9 ROUTE DUCTWORK AS REQUIRED IN ATTIC TO PROVIDE
CLEARANCE ZONE FOR CATWALK AS SHOWN. COORDINATE
EXACT ROUTING WITH STRUCTURAL BEAMS IN ATTIC SPACE.
GENERAL NOTES:
1. SEE SHEET M-001 FOR GENERAL NOTES, LEGEND &
ABBREVIATIONS
2. PLAN DRAWINGS ARE DIAGRAMMATIC IN NATURE AND DO NO
ILLUSTRATE ALL SPECIFIC DUCT TAKE-OFF CONFIGURATIONS,
TAPS, ETC. PROVIDE FLEXIBLE DUCTWORK RUNOUTS TO ALL
SUPPLY AND RETURN GRILLES WITH A MAXIMUM LENGTH OF 5
FEET AND SINGLE BENDS NO GREATER THAN 45 DEGREES.
REFER TO PROJECT SPECIFICATIONS AND DUCTWORK
DETAILS FOR SPECIFIC REQUIREMENTS.
3. PIPING IS TO BE INSTALLED SO THAT ALL VALVES, STRAINERS,
UNIONS, TRAPS AND FLANGES REQUIRING ACCESS ARE
EASILY ACCESSIBLE. ALL VALVES MUST BE INSTALLED SO
THAT THE SYSTEM REMAINS IN SERVICE WHEN EQUIPMENT
OR PIPING (ON EQUIPMENT SIDE OF VALVE) IS REMOVED. ALL
BALANCING VALVES AND BUTTERFLY VALVES MUST BE
PROVIDED WITH POSITION INDICATORS AND MAXIMUM
ADJUSTABLE STOPS. ALL VALVES (EXCEPT CONTROL VALVES)
AND STRAINERS MUST BE FULL SIZE OF PIPE BEFORE
REDUCING SIZE TO MAKE CONNECTIONS TO EQUIPMENT OR
CONTROLS.
GRAPHIC SCALE: 3/8"=1'-0"
3' 0 2' 6'
4 ROOFING AMENDMENT 07.25.25
File details come from the government source that posted it. Updated .