2.1.1 Attachment 3 - 3BR Cal Wildfire NextGen CAD Drawings Furnace-AC System - FEB-03-2025 PE Sealed.pdf
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Federal Emergency Management Agency
About this file
This document is a detailed technical drawing package for a FEMA Manufactured Housing Unit (MHU), specifically a NextGen 3-bedroom unit with a furnace and AC system designed for Wildland-Urban Interface Fire Area Construction. The drawings, dated February 3, 2025, are part of Appendix D and provide comprehensive architectural and engineering specifications for a 14-foot wide manufactured home, including floor plans, electrical layouts, chassis details, roof framing, tiedown systems, and exterior elevations.
The technical specifications cover critical design elements such as structural framing using 2x6 nominal #2 SPF studs, R-19 wall insulation, 7/16" OSB structural sheathing, LP SmartSide paneling, electrical wiring configurations, HVAC system with a 10 KW electric furnace and 2-ton air conditioner, and specialized construction features for fire-resistant environments. The drawings comply with multiple building codes and standards, including HUD Manufactured Home Construction and Safety Standards, Uniform Federal Accessibility Standards, and 2019 California Residential Code requirements for wildfire exposure areas.
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MANUFACTURED HOUSING UNIT
FEDERAL EMERGENCY MANAGEMENT AGENCY
NEXT GEN 3 BEDROOM UNIT
(FURNACE / AC SYSTEM)
APPENDIX D
Wildland - Urban Interface Fire Area Construction
Designs for NextGen 14' Wide MHU's
February 3, 2025
TITLE:
1/8" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DRAWING NO.DATE:
SCALE:
COMPANY: VERSION:
D-14F3-1.1COVER PAGE 14' WIDE MHU (FURNACE)
APPENDIX D
REV 02-03-25. Feb 03, 2025
Attachment 3
APPENDIX D ADDITION/
REPLACEMENT DWG. NO. TITLE
D-14F3-1.1 D-14F3-1.2.1
D-14F3-1.3 GENERAL NOTES
D-14F3-1.4 GENERAL NOTES (CONT)
D-14F3-3 DOOR AND WINDOW SCHEDULE
D-14F3-6
HVAC DESIGN AND OVERHEAD DUCT LAYOUTD-14F3-9
D-14F3-10
SHEARWALL FRAMING AND EXTERIOR SHEATHING
ROOF SHEATHING LAYOUT
D-14F3-18.1 D-14F3-19 D-14F3-20
ROOF OVERHANG DETAIL
D-14F3-22 D-14F3-23
TRANSIT PROTECTION DETAILSD-14F3-27
COVER PAGE
ADDITION/REPLACEMENT PAGE INDEX
ELECTRICAL PLAN
ELEVATIONS
FRONT DOOR SIDEWALL
BACK DOOR SIDEWALL
ADDITION/REPLACEMENT INDEX
D-14F3-2 FLOOR PLAN
D-14F3-11.1 CHASSIS
D-14F3-17.1-17.2 ENDWALL FRAMING AND INTERIOR SHEATHING
ROOF FRAMING LAYOUTD-14F3-21
TIE DOWN SYSTEMD-14F3-29.1
RESERVEDD-14F3-29.2
EXISTING FEMA
DWG. NO.
14F3-1.1
NONE
14F3-1.3
NONE
14F3-3 14F3-6 14F3-9
14F3-10
14F3-18.1 14F3-19 14F3-20
14F3-22 14F3-23 14F3-27
14F3-2
14F3-11.1
14F3-17.1-17.2
14F3-21
14F3-29.1
14F3-29.2
APPENDIX D FOR WILDLAND - URBAN INTERFACE FIRE AREA CONSTRUCTION IS A SUPPLEMENT TO FEMA'S
STANDARD DRAWING PACKAGES.
APPENDIX D IS INTENDED TO ADD OR REPLACE EXISTING PAGES IN FEMA'S STANDARD DRAWING PACKAGES. THE ADDITION/REPLACEMENT INDEX BELOW IS TO BE USED IN ADDING AND REPLACING PAGES.
D-14F3-11.2 CHASSIS DETAILS14F3-11.2
D-14F3-11.1.1
D-14F3-29.1.1
14F3-11.1.1
14F3-29.1.1
ALT. CHASSIS (95.5" I-BEAM SPACING)
ALT. TIE DOWN SYSTEM (95.5" I-BEAM SPACING)
TITLE:
1/8" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DRAWING NO.DATE:
SCALE:
COMPANY: VERSION:
D-14F3-1.2.114' WIDE MHU (FURNACE)
APPENDIX D
ADDITION/REPLACEMENT PAGE INDEX
REV 04-30-21. Feb 03, 2025
MANUFACTURED HOUSING UNIT
FEDERAL EMERGENCY MANAGMENT AGENCY
GENERAL NOTES
CODES AND STANDARDS
Manufactured Home Construction and Safety Standards 24 CFR 3280 Manufactured Home Procedural and Enforcement Regulations 24 CFR 3282 Uniform Federal Accessibility Standards (UFAS) Standard for the Installation of Sprinkler Systems in Manufactured Homes (NFPA 13D) Referenced 2005 National Electrical Code (NFPA 70) Articles as Incorporated in HUD 24 CFR 3280 2019 California Residential Code - Section R337 Materials and Construction Methods for Exterior Wildfire Exposure California Air Resources Board Phase 2 (CARB 2) Compliance
STRUCTURAL LOADS
Floor Live Load 40 PSF Floor Dead Load 10 PSF Roof Live Load 40 PSF Roof Dead Load 10 PSF Comply with Wind Zone 1 Requirements of 24 CFR 3280 Wood Roof Diaphragm Wall Height: 7'-6"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-1.3
DRAWING NO.
GENERAL NOTES 14' WIDE MHU (FURNACE)
APPENDIX D
. Feb 03, 2025
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-1.4
DRAWING NO.
GENERAL NOTES (CONT) 14' WIDE MHU (FURNACE)
APPENDIX D
REV 4-27-20. Feb 03, 2025
F
R
EF
ER
3060-E-SG
SEAT
R.A.G.
W/H
30603060
BA
TH
1 BEDROOM #1
TPS
CLOSET
D R
YE
R
W
AS
H
ER
3060-E
3060-E-SG
SEAT BATH #2
PANTRY
KITCHEN
BEDROOM #3
BEDROOM #2
1 2
31 2
91 2
1 2
1 2
1 2
23810371
1 2
91 2
1 2
1 2 31 2
5'-31 2"
2"
38'-8"
2" 4'-9"
2"
8'-0"
2" 7'-31
2"
7'-101 2"
2"
5'-1"
2" 2'-2"
2"
9'-7"
2" 34'-31
2"
2" 5'-21
2"
2"
1'-101 2"
54'-61 2" 52'-1" 42'-31
2" 7'-91 2"
61'-51 2" 37'-01
2" 31'-43 4" 26'-83
4" 17'-61 4"
47'-33 4" 36'-41
4" 18'-83 4" 4'-03
4"
2'-41 2"
2"
84.34 SF
83.00 SF
85.00 SF
68'-0"
DINING & LIVING
ROOM
59'-11"
16'-0"21'-01 2"59'-11"65'-5"
DESIGNATES A 2X4 WALL
SHEARWALLS - WIND ZONE 1
PLFLENGTHNO.
162"1
SIDEWALL HEIGHT = 90"
162" 241
83.00 S.F.TRUSS HEEL HEIGHT = 9-15/16"
LIGHT AND VENT SCHEDULE
REQUIRED VENTREQUIRED LIGHTROOM TITLE AREA
6.40 S.F.12.80 S.F.LIVING / DINING ROOM 160.00 S.F
3.36 S.F.6.72 S.F.BEDROOM #1 84.00 S.F.
3.40 S.F.6.80 S.F.BEDROOM #2 85.00 S.F.
3.32 S.F.6.64 S.F.BEDROOM #3
160.00 SF
'-6
6"
6"
EXTERIOR
A/C UNIT 18'-6"
SHEAR WALLS FOR WIND ZONE 1
LIVINGDINING
OPTIONAL DEHUMIDIFIER -
SEE APPENDIX A, PAGE A-35.
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-2
DRAWING NO.
FLOOR PLAN 14' WIDE MHU (FURNACE)
APPENDIX D
REV 11-15-23
Floor Plan Notes:
1. All bedroom closet shelving shall be 12 inches deep.. Feb 03, 2025
EF
ER
3060-E-SG
SEAT
W/H
30603060
BA
TH
1 BEDROOM #1
TPS
CLOSET
D R
YE
R
W
AS
H
ER
3060-E
3060-E-SG
SEAT BATH #2
PANTRY
KITCHEN
BEDROOM #3
BEDROOM #2
DINING & LIVING
ROOM
D1
D3
D1
D1
D2
D2 D2
D2
D2D3 D3
D3
MARK
D1 D2 D3
WIDTH
3'-0" 3'-0" 2'-0"
HEIGHT
6'-8" 6'-8" 6'-8"
THICKNESS
1-3/8" 1-3/8" 1-3/8"
TYPE
Outswing Door Hallway Doors Closet & W/H Doors
DOOR SCHEDULE
MARK
W1 W2
WIDTH
2'-6" 2'-6"
HEIGHT
5'-0" 2'-3"
TYPE
Single Hung Window Fixed Pane Window
WINDOW SCHEDULE
W2W1 W1
W1 W1W1
TOTAL EXTERIOR DOOR AREA: 64.5 SQ. FT.
TOTAL WINDOW AREA: 69.9 SQ. FT.
EXTERIOR
A/C UNIT
Door Notes
1. Exterior doors shall meet 24 CFR 3280.405 requirements and shall comply with
Wind Zone 1 requirements.
2. All exterior doors shall be insulated fiberglass or steel with a maximum U-Value of 0.33.
3. All doors shall have lever type handles in compliance with UFAS 4.13.9.
4. For additional information on exterior and interior doors see FEMA Additional
Requirements document and Appendix A.
5. Return air grills shall be installed above doors unless the grill will be blocked by the sprinkler system and then may be installed in the door or wall.
6. Door stops shall be installed at all interior and wardrobe doors. Door stops may be installed on the door or the floor baseboard. Door stop finish to match interior hardware finish.
7. All bathroom and bedroom doors shall have a privacy lock. The lock mechanism shall be the button type (UFAS 4.13.9) and located on the inside of the bathroom or bedroom.
8. The water heater compartment side of the water heater access door shall be covered with minimum 5/16 inch thick gypsum board.
9. The closet doors shall be equipped with a passage latchset with lever handle.
10. All interior doors shall have a maximum gap of 1" between the finished floor and the bottom of the door.
11. The exterior surface or cladding of exterior doors shall be of non-combustible material or ignition-resistant material to comply with R-337.8.3 Exterior Doors of the 2019 California Residential Code.
12. 14x4 RAG centered in door with bottom of opening 2 1/2" above floor. Minimum 20 S.I. of free air return area.
Window Notes
1. Windows shall meet 24 CFR 3280.403 and 3280.404 requirements and shall comply with Wind Zone 1 requirements.
2. Windows shall be double paned, low E with vinyl frame. Windows shall have a maximum SHGC of 0.30 and a maximum U-Value of 0.36.
3. Windows shall have a design pressure rating of 15.
4. Windows shall have screens.
5. Exterior windows shall be vinyl frame with minimum one tempered pane and comply with R-337.8.2.1 Exterior Windows of the 2019 California Residential Code.
LIVINGDINING
SEE NOTE 12
SEE NOTE 12
SEE NOTE 12
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-3
DRAWING NO.
DOOR AND WINDOW SCHEDULE 14' WIDE MHU (FURNACE)
APPENDIX D
REV 9-20-21. Feb 03, 2025
EF
ER
SEAT
W/H
D R
YE
R
W
AS
H
ER
SEAT PANTRY
SS
S3 S3GFCI-WP
TV
WP-16
SS
19-GFCI
7-GFCI
SSS
Back box for exterior alarm.
S
GFCI
GFCI
GFCI
GFCI
GFCI
GFCI
RH-16
S3
3 NOAA
S3
S 3
S 3
SSS
19-GFCI
TV
NOAA
FE
T
GFCI-WP
GFCI
TV17
EXTERIOR
A/C UNIT
Single outlet recept for refrigerator
S3
NOAA
18" AFF TO
RECEPTACLE SCREW
44" AFF
S 3
18" AFF TO
RECEPTACLE SCREW
44" AFF
SSS3
WP-16
44" AFF
18" AFF TO
RECEPTACLE
SCREW
S
- S
ID
E A
SC
SC
SC
GFCI-WP
19 GFCI-WP
H.T. UNDER FLOOR
SC
S3TV
S
See Appendix A, A-51, Elevation 2 for exact location of light, light switch and receptacles.
S
TPS Annunciator Panel
TITLE:
1/8" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
Cir. Purpose Type Wire Size Amps Pole
Bedroom 1 14-2 15 1 2 Bedroom 2 15 1 3 Bedroom 3 15 1 4 Kitchen 20 1 5 Kitchen 1 6 Ext. Recep 1 7 Washer 1 8 Dryer 30 2 9 Electric Range
10 Water Heater 11 A/C 12 15 1 13 Furnace
GFCI
14-2 14-2 12-2
10-3 Per MFR. Specs.
14-3
20GFCI 12-2
20GFCI 12-2
20GFCI 12-2
Per MFR. Specs.
Per MFR. Specs.
14 Living Room 15 114-2 15 TPS System 16 Lights/Recep 15 114-2 17 Dining Room 20 1 18 Refrigerator 1
Per MFR. Specs.
Per MFR. Specs.
19 Bath Receps / Heat Tape 20 1
GFCI
GFCI
D-14F3-6
DRAWING NO.
ELECTRICAL PLAN
Electrical And Lighting Notes
1. The highest breaker in the panel box should be 48" maximum. Panel box bottom must be at least 24" from the floor.
2. The light bulbs shall be LED, equivalent to 60-watt incandescent bulbs, minimum 800 lumens, white in color, between 2,700 K and 4,100 K.
3. No glass shall be used in any of the lighting globes.
4. The exterior lights shall be stored in the refrigerator during transport.
5. Interconnected smoke alarms shall utilize the home's primary power source and shall have battery backup.
6. The center line of the switches and the top of the thermostat must be installed at no more than 48” above the finished floor.
7. Electrical outlets must be no lower than 18" above the floor to the center of the receptacle screw.
8. The junction box for the telephone and cable shall be located within 4' of the road side rear of the MHU.
9. Electric wiring may be done either through the floor or the ceiling.
10. Listed service entrance conduit, sized per 2005 NEC, shall be run from the main distribution panel straight down and extend below the bottom board no more than 3 inches with a listed threaded fitting. End of conduit shall be capped.
11. Thermostat wire shall be run with the condenser line set and shall be supported at 48" O.C. with zip ties. Installation shall conform to low voltage wire requirements per 2005 NEC.
12. For additional information on optional dehumidifier wiring requirements see Appendix A, page A-35.
13. Circuit breaker, wire and junction box shall be installed at the plant. Junction box shall be located below wall framing for dehumidifier and cover plate facing into the Living Room, wire nut end of dehumidifier wire in junction box.
14. Bathroom exhaust fan with light to be 75 cfm with an integrated timer. Bath exhaust fan(s) after being turned on, shall run for a minimum of 60 minutes, even if the fan switch is turned off. Any over-ride to the minimum 60-minute requirement is not acceptable. Label with note shall be placed above bath fan switch stating, FAN ON TIMER AND SHUTS OFF AFTER 60 MINUTES.
15. Kitchen range hood exhaust fan with a white light shall be a minimum 100 cfm exhaust fan, with separate switches.
16. Bathroom and kitchen exhaust fans shall vent directly to the outside.
17. Ceiling lights shall have 2 LED bulbs.
18. The bathroom vanity light shall be wall mounted with 3 LED bulbs.
19. The circuit breaker(s) providing power to the TPS unit shall be equipped with a UL-listed locking device that can secure the breaker(s) in the ON position. Devices shall be installed set to the ON position.
20. Kitchen countertop receptacles and switches must be furred out to be 24" (max) from front edge of countertop, and no more than 44" to the top of the switches or receptacles above finished floor.
21. See TPS closet and TPS closet elevations for electrical locations in Appendix A.
22. Heat tape recept located within 24" of water inlet.
23. Smoke alarms shall not be located within 3 feet horizontally from any ceiling discharge grille.
24. Carbon Monoxide Alarms shall be approved and listed by the State of California Fire Marshal per California Information Bulletin 2012-03 (MH) - 06-26-2012.
12-2 2012-2
12-2
14' WIDE MHU (FURNACE)
APPENDIX D
Smoke Alarm/C.O.
S
WP
Sym. Description
110 volt duplex recep-wall mounted 110 volt duplex-GFCI protected recept
220 volt recept-wall mounted Light Fixture - Ceiling Mounted Light Fixture - Wall mounted Exhaust fan - Light Combo Distribution panel board - 200 amp Exterior light fixture - weather proof
TV
FE
S
S3
NOAA
T
Smoke Alarm w/ Strobe Light - wired in series Telephone Recept TV Outlet Fire Extinguisher Switch Switch - Three Way Outlet for NOAA Weather radio Thermostat
SA
Sym. Description
AC Disconnect
Service Entrance Conduit through bottom board from Main Distribution Panel Board
Optional Dehumidifier (Direct Wired)
20 Optional Dehumidifier 15 114-2GFCI
REV 02-03-25
EF
ER
3060-E-SG
SEAT
W/H
30603060
D R
YE
R
W
AS
H
ER
3060-E
3060-E-SG
SEAT PANTRY
EXTERIOR
A/C UNIT
5'-6"
15'-4"
19'-93 4"
24'-8"34'-6"48'-8"54'-10"62'-6"
5' -1
11 2"
7' -6
'-4
1 2"
'-3
7' -5
2' -5
1 2"
6' -0
7' -6
1 2"16
- S
ID
E A
SC
SC
SC
BATH #1
BEDROOM #1
TPS
CLOSET
KITCHEN
BEDROOM #2
LIVING & DINING
ROOM
BEDROOM #3
BATH #2
SC
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
Heating (10 KW Electric Furnace)
FURNACE / AC SPECIFICATIONS
Cooling (2-Ton Air Conditioner)
D-14F3-9
DRAWING NO.
OVERHEAD DUCT LAYOUT
HVAC DESIGN AND
Floors 0.0356
Air ducts in ceiling 0.0868
Ceilings and roofs of light color 0.0257
Walls (without windows and doors) 0.0575
U Values Heating
Duct Capacity
Air ducts in ceiling (Duct Area) 323 Sq. Ft.
30,644 Btuh
0.0362
0.0896
0.0258
0.0555
Cooling
14' WIDE MHU (FURNACE)
APPENDIX D
HVAC Split Furnace / AC Notes
1. The furnace shall be at least a ninety-five percent (95%) efficient electric furnace (central heating system) capable of maintaining an average temperature of seventy degrees Fahrenheit (70°F) in the MHU.
2. The MHU shall be equipped with a specifically engineered HVAC split furnace /AC system based on the size and intended use of the MHU, in accordance with 24 CFR 3280.506, that is compatible with the HVAC split furnace /AC system size.
3. The furnace shall also be built or equipped for the installation of a split type air conditioner and have enclosed space in water heater/furnace compartment for an A-coil evaporator unit, and with a
4-wire thermostat completely wired and installed.
4. A vibration damping pad shall be placed between the condensing unit and the mounting platform.
5. A 1” ratchet strap with 500 lb. capacity shall be installed around the outside of the condenser unit and bracket extension for transportation.
6. Air conditioning lines shall be pre-charged in the factory per manufacturers specifications and shall not have any leaks. Refrigerant lines shall be run next to the I-beam between the crossmembers and the bottom board where they will be protected from transportation damage. Refrigerant lines shall be secured to the I-beam at 48" O.C.
7. Furnace return air return grill shall be sized per furnace manufacturer's installation instructions.
8. Duct penetrations thru ceiling board shall be sealed.
9. All vent openings (intake or exhaust) to the exterior of the MHU HVAC wall mounted package system unit or furnace HVAC system shall have noncombustible corrosion-resistant mesh with a minimum of 1/16-inch, but not to exceed 1/8-inch openings, and comply with R337.6 of the 2019 California Residential Code.
HVAC General Notes
1. See FEMA specifications for programable and configurable thermostat requirements.
2. Duct system shall be constructed of class 0 or class 1 circular insulated flex ductwork or equal. All ducts to be insulated with a minimum of R-4 insulation.
3. Metal supply register sizes as shown on duct layout.
4. All supply ducts shall be in the roof attic space.
5. All supply duct seams and fasteners shall be sealed with UL-181A or UL-181B listed duct tape.
6. The manufacturer shall provide a duct pressure test report (See FEMA Spec for testing procedure) for each MHU duct system showing duct leakage of 5 percent or less prior to FEMA acceptance of the MHU.
7. No construction debris or sawdust shall be left in the duct system.
8. N/A
9. Return air grilles shall be sized per 24 CFR 3280.715(b)(4).
10. N/A
11. 14x4 RAG centered in bedroom entry door with bottom of opening 2 1/2" above floor. Minimum 20 S.I. of free air return area.
12. A 12” x 6” return air register shall be located 8” above the floor in the TPS Compartment/ bathroom wall. A register shall be placed on each side of the wall.
13. Bathroom exhaust fan location shall not be located next to the bathroom supply register.
REV 11-15-23
TRANSPONDER
ANGLE RAIN DIVERTER OVER DOOR
EXTERIOR LIGHT
FRONT DOOR
TPS DOOR BACK DOOR
PEEP HOLES
PEEP HOLES
ANGLE RAIN DIVERTER OVER DOOREXTERIOR LIGHT
EXTERIOR ALARM DEVICE
BOX w/ COVER PLATE
EXTERIOR RECEPTACLE (GCFI)
(6" ABOVE FINISHED FLOOR)
OUTSIDE
CONDENSER
UNIT WITH
PROTECTIVE
COVER.
OUTSIDE
CONDENSER
UNIT WITH
PROTECTIVE
COVER.
RIDGE VENT (TYP.)
'-6
" M
AX
T O
T O
P O
F R
ID
G
E
VE
N T
14'-0" EAVE TO EAVE
13'-6"
INTERIOR FLOOR LINE
'-6
" M
AX
T O
T H
E
TO
P O
F R
ID
G
E
VE
N T
14'-0" EAVE TO EAVE
13'-6"
FRONT DOOR SIDE ELEVATION
HITCH END ELEVATION TAIL END ELEVATION
BACK DOOR SIDE ELEVATION
3"3"3"3"
HUD LABEL: APPROX. 12" UP
FROM FLOOR AND 12" FROM
ROADSIDE.
EXTERIOR RECEPTACLE (GFCI)
RIDGE VENT (TYP.)
SHINGLES COVERED BY PLASTIC WRAP
OSB FROM BOTTOM OF
SHINGLES TO TOP OF ROOF
EXTERIOR RECEPTACLE (GFCI) 12
RANGE VENT
METAL ROOF POD (TYP. 5 PLACES)
METAL ROOF POD (TYP. 5 PLACES)
METAL ROOF POD (TYP.)
AC DISCONNECT
ANGLE RAIN DIVERTER
OVER DOOR
DRYER VENT
HOSE BIBB
SPRINKLER DRAIN TPS CLOSET
FLOOR DRAIN
SERVICE ENTRANCE CONDUIT
TITLE:
Scale: 1/8" = 1'-0"
Date: 03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency D-14F3-10
DRAWING NO.
ELEVATIONS 14' WIDE MHU (FURNACE)
APPENDIX D
Exterior Finish Notes
1. Siding shall be 19/32” thick LP SmartSide® panel (cedar texture) or equivalent.
2. Color of exterior paneling shall be light gray.
3. Siding shall be approved for Wind Zone 1 requirements.
4. The manufacturer shall provide a transponder sled. See Appendix A.
5. The sled shall be painted with a powder coat paint to match the exterior color of the MHU or white.
6. The transponder sled shall be made out of sheet metal.
7. Soffit, trim and J-Blocks shall be light gray or white.
8. All penetrations (i.e. electrical wires, HVAC lines, etc.) of the 19/32-inch LP SmartSide paneling or equivalent shall be caulked with a fire caulk. REV 11-15-23 . Feb 03, 2025
48 48
4'-0"8'-0"68'-0" 24'-0"32'-0"
68'-0"
48 4848 4848 48
20'-0" 16'-0" 12'-0"28'-0"
48484848
60'-0"64'-0"
- SPRING HANGER
- SISTER BEAM
1 4
1 4
1 2
- S
ID
E A
SEE APPENDIX A, PAGE A-40
Drawing Notes
FRAME CLIP DETAIL
(SAME ON BOTH MAIN I-BEAMS)
**DIMS ARE PULLED FROM END OF HEADER BEAM.
**BE SURE TO VERIFY FLOOR JOIST LAYOUT TO MATCH CLIPS TO JOISTS.
68'-0"
FRAME CLIPS IN AXLE AREA ARE LOCATED ON INSIDE OF SISTER BEAM AS SHOWN.
1'-4" 2'-8"
13'-4"
14'-5" (MOVED JOIST)
17'-51 4"21'-4"25'-4"
26'-8" 29'-4"
22'-8"30'-8" 33'-4"
34'-8" 57'-4"61'-4"
62'-8" 65'-4"
66'-8"
A-FRAME
RE-INFORCEMENT
CENTERED AND
UNDER FRONT
HEADER
SEE CHASSIS DETAILS, DETAIL "A"
3'-6"
12" X 10.8# I-BEAM HEADER12" X 10.8# I-BEAM HEADER
13 Ga. "C" CROSSMEMBER 1-1/2"x3"x1-1/2" X 2' LONG.
(SPLIT FURNACE / AC MHU ONLY)
17'-23 4"
FRONT AND REAR HEADER SHEARWALL LAG BOLT SPACING
1732 32 32
37'-4" 38'-8"
40'-0" 41'-4"
42'-8"
44'-0" 45'-4"
46'-8"
48'-0" 49'-4"
50'-8" 52'-0"
53'-4" 54'-8"
36'-0"
22'-8" CENTER OF AXLES 45'-4" CENTER OF AXLES (67.6% OF FRAME LENGTH)
39'-91 2"
18'-7" INSTALL TIRE BLOW-OUT
PROTECTION IN THIS AREA (BOTH SIDES)
42'-63 4"45'-4"48'-11
4"50'-101 2"
45'-4"
35'-111
2" START SISTER BEAM AND BLOW-OUT PROTECTION
54'-6"
DETAIL "B"
20'-0" LENGTH OF SISTER BEAM (TYP.)
56'-0"
19'-01 4"
18'-93 4"
5'-4" 6'-8"
9'-7" (MOVED JOIST)
10'-8"58'-8"
OUTRIGGER LOCATION
DIMENSIONS ARE TO THE
CENTERLINE OF THE TOP
FLANGE HOLE (TYP).
SEE A-40, NOTE 1.
TITLE:
Scale: 1/8" = 1'-0"
Date: 03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency D-14F3-11.1
DRAWING NO.
CHASSIS 14' WIDE MHU (FURNACE)
APPENDIX D
Chassis Frame Notes
1. All metal-to-metal contact with 1/8” fillet weld minimum.
2. Floor shall be lagged to frame with frame clip, Fastec 9mm x 76mm listed lags or lags equivalent in size and strength at each joist and outrigger tip.
Alternate lags must be reviewed and approved by FEMA or their designee.
3. Clips shall be welded to the I-beam.
4. All parts of the chassis including added/welded parts shall be completely coated with waterproof paint.
5. Tires shall be new, 14.5” rim diameter, 14 ply with “G” load range.
6. Wheels and tires shall meet or exceed the axle rating and be rated for continuous speeds of 65 mph or greater.
7. All axles shall be new.
8. All axles shall be brake axles.
9. A valve stem cover shall be present on every tire.
10. The serial number shall be permanently stamped to the front header to comply with 3280.6. In addition, the serial number shall be painted with rust resistance contrasting color paint, 2 inches (2”) tall on the front header.
11. Rims, bolts, nuts, or other related tire-mounting hardware shall be new.
12. N/A
13. Springs shall be 24 3/4" long multi-leaf.
14. All rims shall be the same color.
15. Maximum typical pier spacing along main I-beams @ 8'-0” o.c. Typical pier load = 6,400 lbs.
16. Manufacturer to place permanent indicators (paint or label) on each I-Beam @ 2'-0" from each end, 12'-0" on center max, and at door jambs for location temporary piers for storage.
17. N/A
18. Structural steel shall be A36 AND Fy: 36Ksi.
19. Longitudinal brackets located in the axle area must be located on the inside I-beam of the double I-beam.
Frame Specs
· Main I-Beam: 12" x 10.8# or equivalent with transportation test.
· Front and Rear Headers: 12" x 10.8# or equivalent with transportation test.
· Crossmember: 13 Ga. C or Z, 1-1/2" x 3" x 1-1/2"x13 Ga.
· Outriggers: 9" Min Depth at I-Beam tapered to 1" , 13 Ga min., C or Z type, with 1-1/2" flange top and bottom.
· Frame Clips: 1" x 1-1/2" x 12 Ga.
Hitch Specs
· See Chassis Details, Details "A"
Welding Specs
1. All welds to be a minimum 1/8" unless otherwise noted. Weld beads can be concave in application as long as the weld size is met.
2. Coupler and Jack shall be welded per manufacturer's installation instructions.
3. I-Beam splice plate shall be 4" wide x height of I-Beam minus 1-1/4" x 13 GA.
Splice plate can be offset +/- 1/4". Weld shall be full width of splice plate.
Splice plate only required on one side of I-Beam.
4. Sister I-Beam shall be welded with 1/8" butt welds 2" long at 24" o.c. top and bottom of I-beam
5. All weld lengths stated or shown are minimum lengths and shall have a tolerance of minus 1/4" (except spring hangers). Weld lengths that are not noted shall be full length.
REV 11-15-23
48 48
4'-0"8'-0"68'-0" 24'-0"32'-0"
68'-0"
48 4848 4848 48
20'-0" 16'-0" 12'-0"28'-0"
48484848
60'-0"64'-0"
- SPRING HANGER
- SISTER BEAM
1 4
1 4
1 2
- S
ID
E A
SEE APPENDIX A, PAGE A-40
Drawing Notes
FRAME CLIP DETAIL
(SAME ON BOTH MAIN I-BEAMS)
**DIMS ARE PULLED FROM END OF HEADER BEAM.
**BE SURE TO VERIFY FLOOR JOIST LAYOUT TO MATCH CLIPS TO JOISTS.
68'-0"
FRAME CLIPS IN AXLE AREA ARE LOCATED ON INSIDE OF SISTER BEAM AS SHOWN.
1'-4" 2'-8"
13'-4"
14'-5" (MOVED JOIST)
17'-51 4"21'-4"25'-4"
26'-8" 29'-4"
22'-8"30'-8" 33'-4"
34'-8" 61'-4"
62'-8" 65'-4"
66'-8"
A-FRAME
RE-INFORCEMENT
CENTERED AND
UNDER FRONT
HEADER
SEE CHASSIS DETAILS, DETAIL "A"
3'-6"
12" X 10.8# I-BEAM HEADER12" X 10.8# I-BEAM HEADER
13 Ga. "C" CROSSMEMBER 1-1/2"x3"x1-1/2" X 2' LONG.
(SPLIT FURNACE / AC MHU ONLY)
17'-23 4"
FRONT AND REAR HEADER SHEARWALL LAG BOLT SPACING
1732 32 32
56'-0"
37'-4" 38'-8"
40'-0" 41'-4"
42'-8"
44'-0" 45'-4"
46'-8"
48'-0" 49'-4"
50'-8" 52'-0"
53'-4" 54'-8"
22'-8" CENTER OF AXLES 45'-4" CENTER OF AXLES (67.6% OF FRAME LENGTH)
39'-91 2"
18'-7" INSTALL TIRE BLOW-OUT
PROTECTION IN THIS AREA (BOTH SIDES)
42'-63 4"45'-4"48'-11
4"50'-101 2"
45'-4"
35'-111
2" START SISTER BEAM AND BLOW-OUT PROTECTION
54'-6"
DETAIL "B"
20'-0" LENGTH OF SISTER BEAM (TYP.)
57'-4"
19'-01 4"
18'-93 4"
5'-4" 6'-8"
9'-7" (MOVED JOIST)
10'-8"58'-8"
OUTRIGGER LOCATION
DIMENSIONS ARE TO THE
CENTERLINE OF THE TOP
FLANGE HOLE (TYP).
SEE A-40, NOTE 1.
TITLE:
Scale: 1/8" = 1'-0"
Date: 4/30/2021FEMA Manufactured Housing Units Federal Emergency Management Agency D-14F3-11.1.1
DRAWING NO.
14' WIDE MHU (FURNACE)
APPENDIX D
Chassis Frame Notes
1. All metal-to-metal contact with 1/8” fillet weld minimum.
2. Floor shall be lagged to frame with frame clip, Fastec 9mm x 76mm listed lags or lags equivalent in size and strength at each joist and outrigger tip.
Alternate lags must be reviewed and approved by FEMA or their designee.
3. Clips shall be welded to the I-beam.
4. All parts of the chassis including added/welded parts shall be completely coated with waterproof paint.
5. Tires shall be new, 14.5” rim diameter, 14 ply with “G” load range.
6. Wheels and tires shall meet or exceed the axle rating and be rated for continuous speeds of 65 mph or greater.
7. All axles shall be new.
8. All axles shall be brake axles.
9. A valve stem cover shall be present on every tire.
10. The serial number shall be permanently stamped to the front header to comply with 3280.6. In addition, the serial number shall be painted with rust resistance contrasting color paint, 2 inches (2”) tall on the front header.
11. Rims, bolts, nuts, or other related tire-mounting hardware shall be new.
12. N/A
13. Springs shall be 24 3/4" long multi-leaf.
14. All rims shall be the same color.
15. Maximum typical pier spacing along main I-beams @ 8'-0” o.c. Typical pier load = 6,400 lbs.
16. Manufacturer to place permanent indicators (paint or label) on each I-Beam @ 2'-0" from each end, 12'-0" on center max, and at door jambs for location temporary piers for storage.
17. N/A
18. Structural steel shall be A36 AND Fy: 36Ksi.
19. Longitudinal brackets located in the axle area must be located on the inside I-beam of the double I-beam.
ALT. CHASSIS
(95.5" I-BEAM SPACING)
Frame Specs
· Main I-Beam: 12" x 10.8# or equivalent with transportation test.
· Front and Rear Headers: 12" x 10.8# or equivalent with transportation test.
· Crossmember: 13 Ga. C or Z, 1-1/2" x 3" x 1-1/2"x13 Ga.
· Outriggers: 9" Min Depth at I-Beam tapered to 1" , 13 Ga min., C or Z type, with 1-1/2" flange top and bottom.
· Frame Clips: 1" x 1-1/2" x 12 Ga.
Hitch Specs
· See Chassis Details, Details "A"
Welding Specs
1. All welds to be a minimum 1/8" unless otherwise noted. Weld beads can be concave in application as long as the weld size is met.
2. Coupler and Jack shall be welded per manufacturer's installation instructions.
3. I-Beam splice plate shall be 4" wide x height of I-Beam minus 1-1/4" x 13 GA.
Splice plate can be offset +/- 1/4". Weld shall be full width of splice plate.
Splice plate only required on one side of I-Beam.
4. Sister I-Beam shall be welded with 1/8" butt welds 2" long at 24" o.c. top and bottom of I-beam
5. All weld lengths stated or shown are minimum lengths and shall have a tolerance of minus 1/4" (except spring hangers). Weld lengths that are not noted shall be full length.
REV 11-15-23. Feb 03, 2025
I-BEAM 12" X 10.8#
DRAWBAR CROSSMEMBER I-BEAM 12" X 10.8# REINFORCEMENT
UNDER FRONT HEADER AND CENTERED BETWEEN FRONT HEADER AND TONGUE
VENTURE 2-5/16" - 60 DEGREE, 10,000LB COUPLER OR EQUIVALENT
JACK - VENTURE TOP MOUNT,
10,000LB GALVANIZED OR EQUIVALENT.
7-3/8" X 4" NOSE PLATE
1" x 1-1/2" X 12GA FRAME CLIP 1/8" x 1-1/2" FILLET WELD TO TOP
FLANGE OF I-BEAM.
9" x 1.5" x 1.5" x 13 Ga
FULL LENGTH OUTRIGGER
1-1/2" x 1-1/2" x 13"L x 13 GA. ANGLE 1/8" x 1"L FILLET WELD TO I-BEAM
AND CROSSMEMBER
FRONT AND REAR I-BEAM HEADERS - 12" X 10.8#
CROSSMEMBER
C OR Z 1-1/2" x 3" x 1-1/2"
13 GA. @ 48" O.C.
HITCH SHALL BE PAINTED GREEN
FULL
1"MAX
1"MAX
NO
WELD
1/4" FILLET WELD
EACH SIDE
3" Notes
1. Thickness is 4 gauge.
2. Vendor to assure all spring hangers are
90° to I-Beam.
3. Shoulder bolts to be torqued per axle manufacturer requirements (Approximately 30 to 50 ft. lbs). Leaf Spring to move freely in hanger.
4. Welds are not continuous around corners.
1/4" FILLET WELD
EACH SIDE
4"
I-BEAM FLANGE
LOOKING UP AT SPRING HANGER
SPRING HANGER
SPRING
HANGER
LEAF
SPRING
EQUALIZER
AXLE
U-BOLTS
LEAF
SPRING
SHACKLE LINK
WITH BOLTS
CENTER SPRING
HANGER
FRAME I-BEAM
TITLE:
FEMA Manufactured Housing Units Federal Emergency Management Agency 1/8" = 1'-0"
03/25/2020
VERSION:DATE:
SCALE:
COMPANY:
DETAIL B: AXLE HANGER
DETAIL A: HITCH ASSEMBLY
D-14F3-11.2
DRAWING NO.
CHASSIS DETAILS
RESERVED
DETAIL D: EQUALIZER & SHACKLE LINK FASTENING
Notes
1. Shoulder bolts are to be used at all equalizer and shackle link locations.
2. Shoulder bolts shall be torqued per axle manufacturer requirements.
(Approximately 30 to 50 ft. lbs.)
3. Equalizer and shackle links are to move freely after shoulder bolts have been torqued.
4. Axle U-bolts shall be torqued per axle manufacturer requirements
(Approximately 70 to 95 ft. lbs.)
14' WIDE MHU (FURNACE)
APPENDIX D
REV 11-29-21
BED#1 CLO.
VERTICAL WALL BOARD PANEL BREAKS
H O
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/4
E1
42669011
BEDROOM #1
48 48 18
/4 x x
-3 /4
BA
C
KE
R U
P
SEE NOTE 12.
3" x 5" x 20 Ga. Metal Connector Plate, one each side
Min 2 x by top plate width by 10” splice block centered over splice, plus or minus 1 inch. Fastened with (6) - 7/16” x 15 Ga staples or (4) .131" nails each side of splice. Fasteners to have min. 1 inch penetration.
Min 1 x by bottom plate width by 10” splice block centered over splice, plus or minus 1 inch.
Fastened with (6) - 7/16” x 15 Ga staples or (4) .131" nails each side of splice. Fasteners to have min. 1/2 inch penetration.3" x 5" x 20 Ga. Metal Connector
Plate, one each side
TOP PLATE SPLICE
BOTTOM PLATE SPLICE
FASTENING SCHEDULE - EXTERIOR WALLS
STUD TO PLATE
FASTENER APPLICATION
15Ga. x 7/16" x 2-1/2" STAPLES or 0.131" X 3" NAIL
3 EACH
2 EACH
BOTTOM PLATE TO FLOOR
TOP PLATE TO TRUSS
SILL MEMBER (@ OPENING) TO STUD
MULTIPLE STUDS (TO EACH OTHER)
MULTIPLE FLAT HEADER MEMBERS - (2)
ROWS OF FASTENERS 80% GLUE COVERAGE
CRIPPLES TO HEADER, SILL AND PLATES
GYPSUM TO STUDS , 80% PVA GLUE
ALTERNATE GYPSUM TO STUDS
100% ONE PART URETHANE GLUE
EXTERIOR SIDING SEE SHEARWALL & EXTERIOR SHEATHING DRAWING
LAYFLATS TO TOP/BOTTOM PLATE
DESCRIPTION
0.131" X 3" NAIL
or #8 x 3" WOOD SCREW
12" O.C.
12" O.C.
0.131" X 3" NAIL
or #8 x 4" WOOD SCREW
1 EACH
1 EACH
15Ga. x 7/16" x 2-1/2" STAPLES or 0.131" X 3" NAIL
9 EACH PLY
6 EACH PLYHEADER TO STUD
15Ga. x 7/16" x 2-1/2" STAPLES or 0.131" X 3" NAIL 15Ga. x 7/16" x 2-1/2" STAPLES or 0.131" X 3" NAIL 15Ga. x 7/16" x 2-1/2" STAPLES or 0.131" X 3" NAIL 15Ga. x 7/16" x 2-1/2" STAPLES or 0.131" X 3" NAIL
3 EACH
2 EACH
12" O.C.
12" O.C.
6" O.C.
6" O.C.
3 EACH
2 EACH
19Ga. x 3/16" x 1-1/4" STAPLES or DRYWALL SCREWS
6" EDGES
6" EDGES
19Ga. x 3/16" x 1-1/4" STAPLES or DRYWALL SCREWS
6" Edges / 12" Field 6" Edges / 12" Field
15 Ga. x 7/16" x 2-1/2" STAPLES 2 EACH
BACKERS TO STUD - BACKERS SHALL
BE #3 SPF MIN. AND SIZE AS SHOWN ON
DRAWINGS.
15Ga. x 7/16" x 2-1/2" STAPLES
(END GRAIN ONLY)
OR .131" X 3" NAIL (END GRAIN OR TOED)
6 EACH
3 EACH
TITLE:
1/4" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-17.1
DRAWING NO.ENDWALL FRAMING
INTERIOR SHEATHING 14' WIDE MHU (FURNACE)
APPENDIX D
Wall Framing Notes
1. The exterior wall framing shall be 2 x 6 nominal #2 SPF at 24” o.c.
2. Wall framing shall be 7'-6” from floor to ceiling.
3. Sidewall top plates shall be single 2 x 6 nominal #2 SPF.
4. Sidewall bottom plate shall be single 1 x 6 nominal SPF.
5. All major joints - wall to wall, wall to ceiling, wall to floor shall be caulked or gasketed to prevent air infiltration.
6. The wall insulation shall be kraft backed R-19 and will be installed without voids, gaps, or compression.
7. N/A
8. The walls shall be painted with latex, low VOC paint.
9. Housewrap applied over exterior sheathing.
10. All exterior penetrations (vents, lights, outlets, etc.) shall be flashed with ice and water shield 12” wide around penetration. Refer to Appendix 'A' for window and door flashing details.
11. Wall interiors shall be faced with 1/2" Gold Bond XP gypsum board with paint or equivalent installed per ASTM C840 and GA-216.
12. When gypsum is installed horizontally a 1/8" x 3" continuous plywood backer strip shall be installed at the horizontal joint. Fasten to each stud with 2- 7/16 x 15 GA staples (min. 1" penetration).
REV 02-03-25. Feb 03, 2025
/4
18 15
E2
33 1/2
42 66 90 11
BEDROOM #2
26 1/24842
1/ x x
-3
/4
BA
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SEE NOTE 12.
TITLE:
1/4" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-17.2
DRAWING NO.ENDWALL FRAMING
INTERIOR SHEATHING 14' WIDE MHU (FURNACE)
APPENDIX D
Wall Framing Notes
1. The exterior wall framing shall be 2 x 4 nominal #2 SPF at 24” o.c.
2. Wall framing shall be 7'-6” from floor to ceiling.
3. Sidewall top plates shall be single 2 x 4 nominal #2 SPF.
4. Sidewall bottom plate shall be single 1 x 4 nominal SPF.
5. All major joints - wall to wall, wall to ceiling, wall to floor shall be caulked or gasketed to prevent air infiltration.
6. The wall insulation shall be kraft backed R-13 and will be installed without voids, gaps, or compression.
7. N/A
8. The walls shall be painted with latex, low VOC paint.
9. Housewrap applied over exterior sheathing.
10. All exterior penetrations (vents, lights, outlets, etc.) shall be flashed with ice and water shield 12” wide around penetration. Refer to Appendix 'A' for window and door flashing details.
11. Wall interiors shall be faced with 1/2" Gold Bond XP gypsum board with paint or equvalent installed per ASTM C840 and GA-216.
12. When gypsum is installed horizontally a 1/8" x 3" continuous plywood backer strip shall be installed at the horizontal joint. Fasten to each stud with 2- 7/16 x 15 GA staples (min. 1" penetration). REV 02-03-25
7/16" OSB ON EXTERIOR SIDE FASTENED
WITH 0.131X2-1/2" NAILS @ 6" OC ON
EDGES, 12" OC IN FIELD
SI
D
EW
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E1
2 - I-BEAM SPACING 991
2 - I-BEAM SPACING
#8x4" SCREWS @
6" OC THRU BOTTOM
PLATE INTO END
FLOOR JOISTS
1x6 BOTTOM PLATE
#8x4" SCREWS
INTO SIDEWALL STUD
@ 12" OC
(1)-2x6 TOP PLATE
SHEATHING FASTENED TO TRUSS
PER SHEARWALL SCHEDULE
90 90
FRONT SHEARWALL E2 REAR SHEARWALL
#8x4" SCREWS @
6" OC THRU TRUSS
INTO TOP PLATE
(STAGGER FASTENERS).
SEE NOTE 8.
END TRUSSES ONLY - ADD
VERTICALS TO MAINTAIN 24" O.C.
SPACING. ADDED VERTICALS
SHALL BE 2X4 #2 SPF. FASTEN
WITH (2) - .131" X 3" NAILS TOED
EACH CONNECTION.
(4) 1 1/2"x12"x26 GA.
STRAPS W/ (6) 15 GA.
STAPLES (1" MIN.
PENETRATION) EACH
END OF STRAP.
STRAP DETAIL
12" x 10.8# HEADER
(2)-2x8 #2 SPF
SHEARWALL JOISTS
(4) 1 1/2"x12"x26 GA.
STRAPS W/ (6) 15 GA.
STAPLES (1" MIN.
PENETRATION) EACH END
OF STRAP.
(4) 1 1/2"x12"x26 GA.
STRAPS W/ (6) 15 GA.
STAPLES (1" MIN.
PENETRATION) EACH
END OF STRAP.
(4) 1 1/2"x12"x26 GA.
STRAPS W/ (6) 15 GA.
STAPLES (1" MIN.
PENETRATION) EACH
END OF STRAP.
TITLE:
1/4" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-18.1
DRAWING NO.SHEARWALL FRAMING
AND EXTERIOR SHEATHING 14' WIDE MHU (FURNACE)
APPENDIX D
Shearwall Notes
1. Shearwall joists shall be (2)-2x8 #2 SPF.
2. Shearwall shall be lagged to 12" x 10.8# I-Beam header with five (5) equally spaced, Fastec 9mm x 76mm listed lags or equivalent.
3. 7/16" (24/16 span index) OSB shearwall sheathing shall be continuous over the shearwall joist and fastened with 1 row of .131 x 3" nails @ 6" o.c.
4. OSB shearwall sheathing shall be fastened to studs with .131 x 3" nails @ 6" o.c. at edges and 12" o.c. in field.
5. OSB shearwall sheathing shall be continuous over the truss bottom chord and fastened with 1 row of .131 x 3" nails at 6" o.c.
6. Shearwall OSB sheathing to be overlaid with 19/32” thick LP SmartSide® panel or equivalent.
7. 19/32” thick LP SmartSide® panel or equivalent shall be fastened with 0.113 diameter galvanized nails with a minimum 0.270-inch diameter head, minimum 1 ½ inch penetration into framing members. Fasteners to be spaced 3 inches o.c. at panel edges and 8 inches o.c. at intermediate framing members. Nominal 1/4" bead of UL listed fire rated caulk required at all vertical joints.
8. Truss to truss bottom chord fastening NOT required for double trusses over end shearwalls. Truss bottom chord fastening to top plate to be staggered from one truss bottom chord to the other truss bottom chord.
9. N/A
10. N/A
11. N/A
12. See Appendix A, Detail F.2 for clarification of shearwall OSB sheathing joint and fastening. REV 9-8-22
36'-41 4" 47'-33
4" 18'-83
4"
0"
/4
2' -0
'-0
4' -0
/4
6' -0
6' -7
/4
8' -0
'-0
'-0
30 1/2
WINDOW
BA
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/4
30 1/2
/2
30 1/2
/2
'-0
'-0
'-1
0"
'-8
/4
'-0
'-4
'-0
'-0
'-0
'-0
'-0
'-4
/4
'-1
3/
4"
'-4
/4
'-0
'-0
'-3
/4
'-1
1/
4"
'-0
'-0
'-8
/2
'-0
'-0
'-0
'-0
'-0
'-0
EXT. DOOR WINDOW
16 3/4 48 37 1/4 DOOR HDR 24
30 1/2
WINDOW 42 48 48
/4 S
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30 1/2
/2
PA
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'-0
'-0
'-0
'-2
/4
BCKR
UP
2X6 BA
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BA
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BA
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BA
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WINDOW
48 32 3/4 48 48 28 1/4
WINDOW
30 1/2
WINDOW43 1/4 15 3/4 48 4825 3/4
/4 C
LO
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BCKR
UP
2X6
O H
EA
D
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IN
ET
S
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D C
AB
IN
ET
S
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AB
IN
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AN
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1/
/4
1/
/4
1/
/4
S1
H
IT
C H
E N
D
30 1/2 145 1/2 37 1/4 50 124 1/4 30 1/2 101 30 1/2 58 1/4 159 1/2
1/
/2
/2
/2
H O
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HORIZONTAL
WALLBOARD
LAYOUT
VERTICAL
WALLBOARD
LAYOUT
PA
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B
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'-0
RANGE HOOD VENT
BCKR
UP
2X6
S
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'-0
BCKR
UP
2X6
C
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F
BCKR
UP
2X6
/2
BCKR
UP
2X6
SEE NOTE 12.
SEE NOTE 12.
1 1/2"x12"x26 Ga STRAP W/ (6) - 15Ga STAPLES
(MIN. 1" PENETRATION)
EACH END OF STRAP.
ONE STRAP AT FIRST
STUD.
1 1/2"x12"x26 Ga STRAPS W/ (6) - 15Ga STAPLES
(MIN. 1" PENETRATION)
EACH END OF STRAP.
ONE STRAP AT FIRST
STUD.
1 1/2"x12"x26 Ga STRAPS W/ (6) - 15Ga STAPLES
(MIN. 1" PENETRATION)
EACH END OF STRAP.
ONE STRAP AT FIRST
STUD.
1 1/2"x12"x26 Ga STRAPS W/ (7) - 15Ga
STAPLES (MIN. 1" PENETRATION) EACH
END OF STRAP. (SEE NOTE 12 ALSO)
1 1/2"x12"x26 Ga STRAPS W/ (7) - 15Ga
STAPLES (MIN. 1" PENETRATION) EACH
END OF STRAP. (SEE NOTE 12 ALSO)
1 1/2"x12"x26 Ga STRAP W/ (6) - 15Ga STAPLES
(MIN. 1" PENETRATION)
EACH END OF STRAP.
ONE STRAP AT FIRST
STUD.
BACKERS
UP
2X6
(ALL)
3060-E-SG 3027 3060-E
SE
ATPANTRY
P.BOX
SEE NOTE 22.
37 1/4
'-7
'-3
3/
29 1/2
29 1/2 19 1/4
19 1/4
2' -5
/2
'-0
BACKERS
UP
2X6
P
AN
TR
Y
(ALL)
'-1
/4
" M O
VE
S
TU
D
'-3
/4
" A D
D S
TU
D
30'-7 3/4" RANGE CENTER LINE
R
AN
G
E
VE
N T
210 1/2
7/
TITLE:
1/8" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-19
DRAWING NO.
FRONT DOOR SIDEWALL 14' WIDE MHU (FURNACE)
APPENDIX D
Wall Framing Notes
1. The exterior wall framing shall be 2 x 6 nominal #2 SPF at 24” o.c.
2. Wall framing shall be 7'-6” from floor to ceiling.
3. Sidewall top plates shall be single 2 x 6 nominal #2 SPF.
4. Sidewall bottom plate shall be single 1 x 6 nominal SPF.
5. All major joints - wall to wall, wall to ceiling, wall to floor shall be caulked or gasketed to prevent air infiltration.
6. The wall insulation shall be kraft backed R-19 and will be installed without voids, gaps, or compression.
7. Siding shall be 19/32” thick LP SmartSide® panel (cedar texture) or equivalent.
8. The walls shall be painted with latex, low VOC paint.
9. Headers shall be (2) 2 x 6 #2 SPF flat or equal fastened together with 80% adhesive and 7/16 x 2 ½ x 15 GA staples or .131 x 3” pd nails, 2 rows @ 6” o.c.
10. Housewrap applied over exterior sheathing.
11. All exterior penetrations (vents, lights, outlets, etc.) shall be flashed with ice and water shield 12” wide around penetration. Refer to Appendix 'A' for window and door flashing details.
12. Fasten stud to floor edge rail and roof edge rail with (1) 1 ½” x 12” x 26 ga strap with (6) 15 ga. staples (1" min. penetration) each end of strap. Straps spaced at 48" o.c.
13. N/A
14. Grab bar backers to be centered at grab bar mounting height.
15. Toilet paper holder backer to be centered at toilet paper holder mounting height.
16. Range hood vent through wall size and location may vary. Manufacturer to verify size and location from range hood vendor that will be used. Range hood vent screen shall have minimum of 1/16 inch, but not to exceed
1/8-inch openings, and shall comply with R337.6 of the 2019 California Residential Code.
17. Gypsum to be jointed above all doors in line with jambs.
18. Gypsum to be jointed above and below all windows in line with jambs.
19. Wall interiors shall be faced with 1/2" Gold Bond XP gypsum board with paint or equivalent installed per ASTM C840 and GA-216.
20. 19/32” thick LP SmartSide® panel or equivalent shall be fastened with 0.113 diameter galvanized nails with a minimum 0.270-inch diameter head, minimum 1 ½ inch penetration into framing members. Fasteners to be spaced
3 inches o.c. at panel edges and 8 inches o.c. at intermediate framing members. Nominal 1/4" bead of UL listed fire rated caulk required at all vertical joints.
21. Backers shall be #3 SPF min. and size as shown on drawings.
22. When gypsum is installed horizontally a 1/8" x 3" continuous utility grade plywood backer strip shall be installed at the horizontal joint. Fasten to each stud with 2- 7/16 x 15 GA staples (min. 1" penetration). REV 02-03-25
306030603060-E
S2
0"
/4
2' -0
'-0
4' -0
6' -0
8' -0
'-0
'-0
48 48 x x
-3
/4
BA
C
KE
R
U P
/4
30 1/2
/2
30 1/2
/2
30 1/2
/2
/4 x x
-3
/4
BA
C
KE
R
U P x x
-3
/4
BA
C
KE
R
U P
'-0
'-0
'-7
/2
'-0
'-0
'-0
'-8
/4
'-0
'-3
/4
'-0
'-0
'-4
/4
'-0
'-0
/2
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-5
/2
'-0
'-0
'-0
EXT. DOORWINDOWWINDOWEXT. DOORWINDOW
BCKR
UP
2X6
/4 C
LO
. S
H
EL
F
484818 1/437 1/4 DOOR HDR40 1/232 3/425 1/2
30 1/2
WINDOW
30 1/2
WINDOW37 1/4 DOOR HDR 37 1/446 1/448484848
30 1/2
WINDOW 17 1/248
BACKER
UP
2X6
BACKER
UP
2X6
BACKER
UP
2X6
BACKER
UP
2X6
BACKER
UP
2X6
BACKER
UP
2X6
BACKER
UP
2X6
T
.P
/2 G
R
AB
B
AR
T
O W
EL
B
AR
x x
-3
/4
BA
C
KE
R
U P
1/
/4
1/
/4
1/
/4
H
IT
C H
E N
D
94 3/4115 1/237 1/473 1/437 1/437 1/4118 1/430 1/2 137 1/248
HORIZONTAL
WALLBOARD
LAYOUT
VERTICAL
WALLBOARD
LAYOUT
/2 10 9 1/
/2
/2 10 9 1/
H O
R
IZ
O N
TA
L
PA
N
EL
S
IZ
E
(IF
A
PP
LI
C
AB
LE
H O
R
IZ
O N
TA
L
PA
N
EL
S
IZ
E
(IF
A
PP
LI
C
AB
LE
25 1/230 1/2 30 1/2
BCKR
UP
2X6
C
LO
. S
H
EL
F
'-1
/4
'-0
'-1
1/
4"
SEE NOTE 12.
SEE NOTE 12.
1 1/2"x12"x26 Ga STRAP W/ (6) - 15Ga STAPLES
(MIN. 1" PENETRATION)
EACH END OF STRAP.
ONE STRAP AT FIRST
STUD.
1 1/2"x12"x26 Ga STRAPS W/ (6) - 15Ga STAPLES
(MIN. 1" PENETRATION)
EACH END OF STRAP.
ONE STRAP AT FIRST
STUD.
1 1/2"x12"x26 Ga STRAPS W/ (6) - 15Ga STAPLES
(MIN. 1" PENETRATION)
EACH END OF STRAP.
ONE STRAP AT FIRST
STUD.
1 1/2"x12"x26 Ga STRAPS W/ (7) - 15Ga
STAPLES (MIN. 1" PENETRATION) EACH
END OF STRAP. (SEE NOTE 12 ALSO)
1 1/2"x12"x26 Ga STRAPS W/ (7) - 15Ga
STAPLES (MIN. 1" PENETRATION) EACH
END OF STRAP. (SEE NOTE 12 ALSO)
1 1/2"x12"x26 Ga STRAP W/ (6) - 15Ga STAPLES
(MIN. 1" PENETRATION)
EACH END OF STRAP.
ONE STRAP AT FIRST
STUD.
BACKER
UP
2X6
BCKR
UP
2X6
BCKR
UP
2X6
'-6
/4
37 1/437 1/4
BACKER
UP
2X6
53'-0" (2x6) SPRINKLER BLOCK
BACKER
UP
2X6
38'-11 1/2" (2x4) SPRINKLER BLOCK
27'-4 3/4" (2x6) SPRINKLER BLOCK
BACKER
UP
2X4
/4
SEE NOTE 22.
3/
18'-7 1/2" (2x4) SPRINKLER BLOCK
BACKER
UP
2X4
'-0
'-3
'-0
3/
TITLE:
1/8" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-20
DRAWING NO.
BACK DOOR SIDEWALL 14' WIDE MHU (FURNACE)
APPENDIX D
Wall Framing Notes
1. The exterior wall framing shall be 2 x 6 nominal #2 SPF at 24” o.c.
2. Wall framing shall be 7'-6” from floor to ceiling.
3. Sidewall top plates shall be single 2 x 6 nominal #2 SPF.
4. Sidewall bottom plate shall be single 1 x 6 nominal SPF.
5. All major joints - wall to wall, wall to ceiling, wall to floor shall be caulked or gasketed to prevent air infiltration.
6. The wall insulation shall be kraft backed R-19 and will be installed without voids, gaps, or compression.
7. Siding shall be 19/32” thick LP SmartSide® panel (cedar texture) or equivalent.
8. The walls shall be painted with latex, low VOC paint.
9. Headers shall be (2) 2 x 6 #2 SPF flat or equal fastened together with 80% adhesive and 7/16 x 2 ½ x 15 GA staples or .131 x 3” pd nails, 2 rows @ 6” o.c.
10. Housewrap applied over exterior sheathing.
11. All exterior penetrations (vents, lights, outlets, etc.) shall be flashed with ice and water shield 12” wide around penetration. Refer to Appendix 'A' for window and door flashing details.
12. Fasten stud to floor edge rail and roof edge rail with (1) 1 ½” x 12” x 26 ga strap with (6) 15 ga. staples (1" min. penetration) each end of strap. Straps spaced at 48" o.c.
13. N/A
14. Grab bar backers to be centered at grab bar mounting height.
15. Toilet paper holder backer to be centered at toilet paper holder mounting height.
16. Gypsum to be jointed above all doors in line with jambs.
17. Gypsum to be jointed above and below all windows in line with jambs.
18. Sprinkler head backer location may vary based on sprinkler design.
19. Wall interiors shall be faced with 1/2" Gold Bond XP gypsum board with paint or equivalent installed per ASTM C840 and GA-216.
20. 19/32” thick LP SmartSide® panel or equivalent shall be fastened with 0.113 diameter galvanized nails with a minimum 0.270-inch diameter head, minimum 1 ½ inch penetration into framing members. Fasteners to be spaced
3 inches o.c. at panel edges and 8 inches o.c. at intermediate framing members. Nominal 1/4" bead of UL listed fire rated caulk required at all vertical joints.
21. Backers shall be #3 SPF min. and size as shown on drawings.
22. When gypsum is installed horizontally a 1/8" x 3" continuous utility grade plywood backer strip shall be installed at the horizontal joint. Fasten to each stud with 2- 7/16 x 15 GA staples (min. 1" penetration).
REV 02-03-25
CEILING BOARD LAYOUT
Drawing Notes
· START WITH A 32" CUT PIECE OF
CEILING BOARD
· 1x4 OR PLANT STANDARD CEILING
BACKERS FOR WALL TIE-IN.
· ALL DUCTS TO BE MINIMUM R-4.
OVERHEAD DUCT MAIN MIXING BOX IN THIS BAY
FU
R
N
AC
E M
IX
ER
B O
X
24 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 24
CEILING BOARD LAYOUT
5'-6"
15'-4"
19'-93 4"
24'-8"34'-6"48'-8"54'-10"62'-6"
5' -1
11 2"
7' -6
'-4
1 2"
'-3
7' -5
2' -5
1 2"
6' -0
7' -6
1 2"16
- S
ID
E A
52'-21 2"
21'-11 4"
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
'-0
" 0"
'-0
'-0
'-0
'-0
'-0
'-0
'-0
2' -0
" 0"
SC
SC
SC
'-0
8' -0
6' -0
4' -0
'-7
1 2
1 2
16'-21 4"
7'-91 2"
2'-51 2"
OVERHEAD DUCT MAIN MIXING BOX IN THIS BAY
63'-7"
56'-7"
63'-4" 51'-4"
50'-0"
47'-5" 35'-01 2"
27'-7"
14'-4"
4'-5"
4'-5"
62 65
1 2
60 62
PANEL BOX
'-0
1 2
42'-43 4"
54'-8"
54'-8" VTR91 2
2x4x12" #2 SPF BLOCKS AT 2'-0" O.C. 2x4x12" #2 SPF BLOCKS AT 2'-0" O.C.
35'-5"
65'-61 4"
18'-73
4"
1 2
'-3
60'-31 2" (2x6x96")
20'-93 4" (2x4x48")
7'-5" (2x6x120")
8'-31
2" VTR
14'-4"
SC
29'-8"
FACIA SPLICE EDGE RAIL SPLICE
3" X 4" X 20 GA.
Metal connector plate, one each side
Min 2" X 4" X 14" block centered over splice +/- 1/4" and fastened with 80% coverage PVA adhesive and 4-.131x3" nails each side of splice
4" X 5" X 20 GA.
Metal connector plate, one each side
Min 2" X 6" X 14" block centered over splice +/- 1" and fastened with 80% coverage PVA adhesive and 6-.131x3" nails each side of splice
2x6 edge rail2x4 Fascia 2x4 Fascia 2x6 edge rail
TITLE:
1/8" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-21
DRAWING NO.
ROOF FRAMING LAYOUT 14' WIDE MHU (FURNACE)
APPENDIX D
Roof Framing Notes
1. The roof trusses shall be spaced at 24” o.c. maximum.
2. Overall shipping width shall not exceed 14'-0".
3. The roof pitch shall be nominal 3:12.
4. The attic insulation shall be R-38 blown insulation.
5. The roof sheathing shall be at least 7/16” structurally rated OSB with 24/16 index minimum span rating.
6. Roof felt shall be 2 layers of 15# felt or 1 layer of 30# felt or equivalent synthetic underlayment.
7. The roof covering shall be cemented to the roof decking with 6” wide strip cement, around the perimeter.
8. Ice and water shield, per ASTM D1970 to be self-adhering rubberized asphalt 40 mils minimum thick shall be installed (36” width from eaves).
9. The roof shall have a light or white colored composition 240# architectural style shingle.
10. Ridge vent shall be Class A rated. Vent opening in ridge vent shall have a minimum of 1/16 inch, but not to exceed
1/8 inch openings, or equivalent and comply with R337.6 of the 2019 California Residential Code.
11. The roof sheathing shall span at least 2 truss bays.
12. 24” x 24” ice and water shield shall be installed around all roof penetrations.
13. All roof penetrations shall be capped with a galvanized or aluminum metal cap.
14. Foam baffles designed for 24” o.c. truss spacing to be used to maintain 1” air gap between the roof decking and insulation.
15. All framing members to be #2 SPF or equal.
16. N/A
17. N/A
18. Foam nail polyurethane structural foam adhesive, or equivalent, to be installed per dead load test fastening requirements.
19. Roof trusses must be aligned with studs below.
Top plate to truss.
Sheathing to trusses (for optional blocked diaphragm see Note 17.)
OR #8 x 4" screw
0.131 x 2" nail
1 each 1 each 6" o.c. edges
12" o.c. field into each truss unblocked diaphragm
DESCRIPTION FASTENER APPLICATION
FASTENING SCHEDULE - ROOF
0.131 x 3" Nail
Blocking to truss 2 each at each end.7/16"C x 2-1/2"L x 15Ga staple
Gypsum ceiling to truss Foam adhesive (as per installation instructions.)
Layflat to Gypsum ceiling - Lay flats shall be #3 SPF min. and size as shown on drawings.
Tack in place with foam adhesive.
Fascia to truss (3) each, 7/16"C x 2-1/2"L x 15Ga. staples through fascia
Edge rail to truss (8) 7/16"C x 2-1/2"L x 15Ga. staples or (5) .131 x 3" nails Edge rail to top plate 0.131 x 3-1/2" nails or #10 x 4" screws @ 12" o.c. toed.
Strap to edge rail See sidewall drawings for type and quantity of fasteners
REV 06-03-22
- ATTIC RIDGE VENT (INSTALL PER MANUFACTURER'S INSTALLATION INSTRUCTIONS.
16 96
16 96
16 96
16 96
15'-0"
SEE NOTE 8 (TYP. 5 PLACES)
15'-0" LINEAR FEET OF CERTAINTEED 9" FILTER CLASS A FIRE RATED RIDGE VENT OR EQUIVALENT CENTERED ON ROOF.
(16 SQ. IN. NET FREE VENT AREA PER FOOT.)
- S
ID
E A
68'-67 8"
GAP DETAIL - ROOF DECKING AT RIDGE VENT LOCATION
SCALE 3/8" = 1'
38 W/O RIDGE VENT
Note: Roof decking cut back only at ridge vent area.
SEE NOTE 4
1 GAP
845 8
38 W/O RIDGE VENT
SEE NOTE 4
1 GAP
TITLE:
1/8" = 1'-0"
03/25/2020FEMA Manufactured Housing Units Federal Emergency Management Agency
DATE:
SCALE:
COMPANY: VERSION:
D-14F3-22
DRAWING NO.
ROOF SHEATHING LAYOUT 14' WIDE MHU (FURNACE)
APPENDIX D
Roof Edge Detail Notes
1. The roof sheathing shall be at least 7/16” structurally rated OSB with
24/16 index minimum span rating.
2. Decking cuts include endwall overhangs.
3. Use roof decking off-fall for roof wind diverters.
4. H clips shall be used at all joints between trusses.
5. Roof underlayment shall be a minimum of 15-pound asphalt felt. Typical manufactured housing full width paper underlayment is not acceptable.
6. Asphalt shingles shall be Class A rated and comply with R337.5 of the 2019 California Residential Code.
7. Ridge vent shall be Class A rated. Vent openings in ridge vent shall have a minimum of 1/16-inch, but not to exceed 1/8-inch openings, and comply with R337.6 of the 2019 California
Residential Code.
8. Roof low vents shall be metal roof pods, Class A rated, minimum 50 square inches of free air area. Metal roof pods shall have a minimum of 1/16-inch, but not to exceed 1/8-inch openings, and comply with…
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