Appendix_C_-_NextGen_Documents_-_06-28-19.pdf

MANUFACTURED HOUSING UNIT

FEDERAL EMERGENCY MANAGEMENT AGENCY

Appendix C

Typical NextGen Documents

June 28, 2019

VERSION 1

COVER PAGE

TITLE:

Scale: NTS

6/28/2019

FEMA

Manufactured Housing Units

Federal Emergency Management Agency

DRAWING NO.TYPICAL NEXTGEN

C-1DOCUMENTS

Appendix C - NextGen MHU

Page No. Title

C-1 Cover Page

C-2 Index

C-3 General Notes

C-10.1 & C-10.2 FEMA Asphalt Shingle Roofing for High Wind Regions - 09-2004

C-20.1 thru C-20.28 FEMA Design and Installation of Residential Sprinkler Systems for Disaster Housing -

Revision B-E - 29 May 2018 (External TPS System for 8 Wide Express MHU's)

C-30.1 thru C-30.24 FEMA Installation Residential Sprinkler Systems for Disaster Housing - Revision D-A - 1

August 2018 (Internal TPS System for 14 Wide MHU's)

C-40.1 thru C-40.99

MHU Fire Sprinkler System Installation, Test, Maintenance, Repair and Deactivation

Guide - Revision 1.2 - March 20, 2018

APPENDIX C - Index

06/28/19

C-2

Appendix C - FEMA NextGen MHU Cut Sheets

06-28-19 C-3

General Notes

The following documents and/or reports are provided for the use of vendors in development of bid proposal documents and for those vendors awarded a contract for construction of the FEMA NextGen

MHU’s.

1. Should a conflict exist between applicable laws or regulations and the national standards cited in these documents, FEMA’s COR shall be notified of the details and resolution. In general, the more stringent requirement is to be followed.

2. Should there be a conflict between the FEMA drawing package, or the FEMA Rugged Based

Performance Requirements and the documents contained in Appendix C, the vendor shall submit their question(s) to FEMA’s COR for resolution. In general, the FEMA drawing package and the Rugged Based Performance Requirements shall take precedent.

3. All materials and construction used by vendors in the construction of MHU’s shall comply with the requirements of 24 CFR 3280 - Manufactured Home Construction and Safety Standards.

Asphalt Shingle Roofing for High-Wind Regions HURRICANE RECOVERY ADVISORY Recovery Advisory No. 2 www.fema.gov

Recovery Advisory No. 2 – Asphalt Shingle Roofing for High-Wind Regions September 2004

Purpose: To recommend practices for installing asphalt roof shingles that will enhance wind resistance in high-wind, hurricane-prone areas (both coastal and inland).

Key Issues

• Special installation methods are recommended for asphalt roof shingles used in high-wind, hurricane-prone areas (i.e., greater than 90-mph, 3-second peak gust design wind speed).

• Use wind-resistance ratings to choose among shingles, but do not rely on ratings for performance.

• Consult local building code for specific installation requirements. Requirements may vary locally.

• Always use underlayment. See Fact Sheet No. 1 for installation techniques in hurricane-prone areas.

Construction Guidance Follow shingle installation procedures for enhanced wind resistance.1

Appendix C - NextGen MHU

06-28-19 C-10.1 http;//www.fema.gov

Recovery Advisory No. 2 – Asphalt Shingle Roofing for High-Wind Regions September 2004

Consider shingle physical properties.

1. Design wind speed based on 3-second peak gust.

2. ASTM D 3462 specifies a minimum fastener pull-through resistance of 20 lb at 70º F. If a higher resistance is desired, it must be specified.

3. Neither ASTM D 225 or D 3462 specify minimum bond strength. If minimum bond strength is desired, it must be specified.

Ensure that the fastening equipment and method results in properly driven roofing nails for maximum blow-off resistance. The minimum required bond strength must be specified (see Wind-Resistance Ratings, below).

Fastener Guidelines

• Use roofing nails that extend through the underside of the roof sheathing, or a minimum of 3/4 inch into planking.

• Use roofing nails instead of staples.

• Use stainless steel nails when building within 3,000 feet of saltwater.

Weathering and Durability Durability ratings are relative and are not standardized among manufacturers. However, selecting a shingle with a longer warranty (e.g., 30-year instead of 20-year) should provide greater durability in hurricane-prone climates and elsewhere.

Organic-reinforced shingles are generally more resistant to tab tear-off, but tend to degrade faster in warm climates. Use fiberglass-reinforced shingles in warm, hurricane-prone climates and consider organic shingles only in cool, hurricane-prone climates. Modified bitumen shingles may also be considered for improved tear-off resistance of tabs. Organic-reinforced shingles have limited fire resistance – verify compliance with code and avoid using in areas prone to wildfires.

After the shingles have been exposed to sufficient sunshine to activate the sealant, inspect roofing to ensure that the tabs have sealed. Also, shingles should be of “interlocking” type if seal strips are not present.

Wind-Resistance Ratings Wind resistance determined by test methods ASTM D 3161 and UL 997 does not provide adequate information regarding the wind performance of shingles, even when shingles are tested at the highest fan speed prescribed in the standard. Rather than rely on D 3161 or UL 997 test data, shingle uplift loads should be calculated in accordance with UL 2390. Shingles having a bond strength (as determined from test method ASTM D 6381) that is at least twice as high (i.e., a minimum safety factor of 2) as the load calculated from UL 2390 should be specified/purchased.

Appendix C - NextGen MHU

06-28-19 C-10.2

FEMA Amendment to Rugged Based Requirements version B-D

DESIGN AND INSTALLATION OF

RESIDENTIAL SPRINKLER SYSTEMS FOR DISASTER HOUSING

Revision B-E

29 May 2018

Appendix C - FEMA NextGen MHU

06-28-19 C-20.1

CONTENTS

Document Revision History:

1. OBJECTIVE

2. NEW CLIN AND CLIN STRUCTURE

3. REQUIREMENTS

4. APPLICABLE STANDARDS

5. QUALIFICATIONS

6. MHU BASIC ORIENTATION

7. WATER SUPPLY TO THE MHU

8. STANDALONE SPRINKLER SYSTEM OVERVIEW

9. SPRINKLERS

10. COVERAGE

11. PIPE

12. SPRINKLER CONCEALMENT

13. TAMPER PROTECTION

14. ELECTRICAL CONNECTION

15. SPRINKLER RISER

16. SPRINKLER DRAIN

17. DECOMMISSIONING

18. QUALITY CONTROL

19. ACCESSORIES:

20. DOCUMENTATION, LABELING AND SIGNS

21. ACRONYMS

22. DIAGRAMS

06-28-19 C-20.2

DOCUMENT REVISION HISTORY:

This table lists revisions and changes made to this document since the initial issue.

Date Revision Sections Revised Revision Explanation

7/01/2015 1.0 Initial issue for solicitation.

7/22/2015 1.1 Multiple Revisions based on requests for interpretation of solicitation.

8/28/2015 1.2 Multiple Further revisions based on requests for interpretation of solicitation.

2/24/2016 1.3 Multiple Revisions pursuant to First Item Inspection results.

3/31/2016 1.4 Multiple Revisions resulting from ongoing system development.

9/06/2016 C Multiple Issue to consolidate multiple revisions (above) that were disseminated in various formats and to clarify various questions. See accompanying spreadsheet for detailed listing.

Multiple editorial corrections not specified.

7/20/2017 D All

3.15, 12.2

3.6, 7.1

4.1.8

5.2

5.6

8.4.1

9.1

11.2, Diagram 5

11.4.1

12.2

13.4, 13.5

14.6.1

14.7

15, 8.7, Diagram 7

18.2

19.6

20, et. seq.

Editorial corrections.

Revised soffit system to conceal sprinkler pipe.

Revised pump supply curve.

Added applicable standard for cam-locking connections.

Clarified requirements for designers.

Clarified training requirements for installation personnel.

Deleted option to conceal sprinkler riser inside a wall.

Revised sprinkler requirement.

Clarified pipe materials; added approval and use requirements for Uponor brand PEX tubing.

Revised pipe hanger requirements.

Clarified soffit system requirements and installation.

Revised sprinkler valve locking requirements.

Revised instructions for padlock on mechanical interlock.

Revised to require concealed wiring for mechanical interlock.

Complete revision and renumbering of the sprinkler riser requirements.

Complete revision of sprinkler drain line requirements.

Revised pressure test pressure requirement.

Replaced garden hose adapter with soffit removal tool.

Added document storage case and clarified documentation required.

3/13/2018 11.2, et. seq.

3.1.20

Revised to permit use of gasket sealed sprinkler head adapters and to clarify requirements to permit thermal expansion and contraction of CPVC pipe.

Added requirements outlining the plans review and approval process.

06-28-19 C-20.3

1. OBJECTIVE

1.1. FEMA is seeking to provide residential sprinkler protection for its manufactured housing units

(MHU). In order to achieve this, FEMA is requesting proposals from its 2014 MHU contract awardees for additional optional requirements/CLINs in general.

1.2. These requirements shall become an addendum to the existing Rugged Based Requirements.

2. NEW CLIN AND CLIN STRUCTURE

2.1. The modification shall include additions to the CLIN structure for the contract.

2.2. All new CLINs shall be a sub CLIN of Optional Requirement/CLIN 04-1.

2.3. FEMA will provide as an addendum to the existing CLIN structure as a separate attachment to this request. The CLINs will run concurrently with the existing base and option years.

2.4. A new CLIN structure and instructions will be provided as an attachment to this requirement.

3. REQUIREMENTS

This section provides an overview of the required elements. In some instances, the requirements are described in greater detail in later section of this document; in other instances, no additional detail is provided.

3.1. Design, provide and install a complete wet-pipe automatic residential fire sprinkler system

(standalone not multi-purpose piping) in each MHU provided. Sprinkler system shall be compliant with HUD Code (where applicable) and NFPA 13D, except as the government has included or excluded options within the scope of NFPA 13 or are required by individual jurisdictions, but do not conflict with NFPA 13D or are required by this set of requirements. The sprinkler system shall use the other standards referenced herein.

3.1.1. Where conflict exists between applicable laws or regulations and the national standards cited in this contract, FEMA’s COR is to be notified of the details. In general, the more stringent requirement will be followed.

3.1.2. The sprinkler system shall be designed and installed so that it can withstand the rigors of transportation without affecting its functionality.

3.1.3. Provide all parts, materials, labor to install the residential sprinkler system at the factory.

Provide all installation, maintenance and deactivation instructions, and specialty tools (e.g., sprinkler head installation/remove tool) for each MHU required to install, operate, maintain and decommission the sprinkler system. The tools shall be included in the box that contains the sprinkler heads.

06-28-19 C-20.4

3.1.4. The design shall include provisions and components necessary to allow the residential sprinkler system to be easily deactivated, disconnected and drained with common tools when FEMA removes the MHU. Include a procedure by which the sprinkler system and all components can be drained into the sanitary sewer system of the MHU during the deactivation process.

3.1.5. In order to facilitate inspection by the Authority Having Jurisdiction (AHJ), all sprinkler piping and sprinkler heads shall be accessible for inspection should an inspection be required.

3.1.6. The sprinkler pipes and heads shall be mounted within the heated envelop of the MHU. Items such as the connection to the external water supply shall be installed outside of the heated envelope; however, these components shall be protected from freezing.

3.1.7. The MHU shall be equipped with an electrical connection to provide power to the FEMA provided external tank and pump system (TPS).

3.1.8. The sprinkler system shall be designed and installed to draw water from a prepackaged tank and pump system (TPS) that will be supplied by FEMA. This system will provide 30 gpm at

50 psig to the water point of connection on the underside of the home. Sprinkler system design and calculations shall be based on this water supply. Designers should use a pump churn pressure of 55 psig as the second point on the water supply curve. .

3.1.9. Provide complete system documentation including as-built drawings, design calculations, parts list, and detailed instructions for activating the system once the MHU is installed at the disaster site installation location. Detailed maintenance and decommissioning instructions shall also be provided.

3.1.10. Sprinkler system design shall be performed by an individual with experience in residential sprinkler design.

3.1.11. In addition to the requirements of NFPA 13D, sprinklers shall be installed in every bathroom regardless of the bathroom size.

3.1.12. All system components and pipe, with the exception of the sprinkler cover plates and soffit, shall be concealed from occupant view. Pipe and sprinkler heads installed inside the

(normally locked) water heater closet is considered to be concealed and is not required to be concealed.

3.1.13. Once the residential fire sprinkler system is installed at the factory the MHU vendor is responsible for warranty items as are described in the contract. There are no ongoing operational requirements for the MHU vendor.

3.1.14. The sprinkler system shall be designed and installed to eliminate pockets of trapped water that could freeze during the extended period of storage of the MHU.

3.1.15. The sprinkler system shall be designed and installed so that it can withstand the rigors of over-the-road transportation without damage.

3.1.16. RESERVED

06-28-19 C-20.5

3.1.17. This scope of work includes the provision and installation of a soffit system to conceal the sprinkler piping from view. Decoshield®, Soffi-Steel®, and ALumA-Fit™ soffit systems are approved for this purpose. Alternate soffit systems may be proposed for FEMA approval.

3.1.18. This scope of work includes the design and installation of electrical components specified herein to support the water Tank and Pump System (TPS) that FEMA will provide.

3.1.19. Alarm, pressure gauges, and water flow test connection are integral parts of the TPS and are not required parts of the sprinkler system in the home.

3.1.20. Sprinkler System Design Review. A sprinkler system design package, including calculations, drawings, cut sheets, and other information required by NFPA 13D shall be submitted to FEMA for review and approval prior to start of sprinkler system installation.

(FEMA is the AHJ for these systems.) A design package is required for each floor plan MHU.

Design package shall be submitted in PDF format, allowing room on the cover page and drawings for FEMA’s approval stamp and notations. Drawings shall show important dimensions and/or shall be scalable. FEMA will review submitted design packages in the order received, and will normally provide feedback within one business day of submission.

Submitted design packages will be stamped either 1) Approved as Submitted, 2) Approved with

Comments, or 3) Revise and Resubmit, as appropriate.

• Design packages stamped “Approved as Submitted” require no further action by the submitter; installation may commence on receipt of the stamped package.

• Design packages stamped “Approved with Comments” require modification as noted in the comments provided prior to start of sprinkler installation, but do not require re-submission, re-review, or additional approval from FEMA. Installation may commence when the modifications requested have been made.

• Design packages stamped “Revise and Resubmit” must be revised in accordance with the comments provided and must be re-submitted for FEMA approval prior to start of sprinkler system installation.

4. APPLICABLE STANDARDS

4.1. The most current edition of the following National Standards are adopted by incorporation into this contract.

4.1.1. NFPA 13D, Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes.

4.1.2. HUD Standards, 24 CFR 3280 – Manufactured Home Construction and Safety Standards

4.1.3. HUD Regulations 24 CFR 3282 – Manufactured Home Procedural and Enforcement Regulations

4.1.4. NFPA 70, National Electric Code (NEC).

06-28-19 C-20.6

4.1.5. IEC 60-309-2 International Pin and Sleeve (Plugs and Connectors)

4.1.6. IP67 Ingress Protection

4.1.7. IP66 Ingress Protection

4.1.8. Commercial Item Description A-A-59326D, General Specification for Coupling Halves, Quick

Disconnect, Cam-Locking Type

5. QUALIFICATIONS

5.1. All sprinkler system design work shall be under the supervision of a Licensed Professional Fire

Protection Engineer.

5.2. For purposes of residential fire sprinkler design an individual possessing a current NICET Level IV certification in Water Based (formerly Automatic Sprinkler) Systems Layout working under the direction of a licensed Professional Engineer will be acceptable. Submit qualifications of sprinkler system designer(s) and engineer.

5.3. Fire sprinkler system installation and testing shall be overseen and inspected by Journeyman level technicians who are experienced in the installation of residential fire sprinklers. The requirement does not require the installation work to be conducted by said individual.

5.4. Employ workmen of journeymen level for all work associated with the crafts required to fulfill all segments of the contract. At least one licensed tradesmen shall be present on the job site for each professional trade that is needed to complete this work.

5.5. Experience Requirements

5.5.1. Submit evidence of experience designing and installing NFPA 13D sprinkler systems. In light of the many significant differences between NFPA 13D, NFPA 13R, and NFPA 13 sprinkler design standards, experience must be specific to NFPA 13D to be considered. Include prior experience installing NFPA 13D systems in manufactured homes and/or modular homes.

5.6. Every individual who is performing work on a sprinkler system must be factory-trained to install the brand(s) and type(s) of plastic pipe or tube being installed. Evidence of the factory training shall be submitted and approved prior to start of work. The individuals must be factory trained on the specific brand and product being installed. These materials require special handling and installation practices that are unique to the product. No waivers or alternatives to this requirement will be granted.

06-28-19 C-20.7

6. MHU BASIC ORIENTATION

6.1. As part of this modification FEMA is providing a basic orientation for all MHUs. This orientation will help to ensure FEMA and contractors are referring to the same part of the MHU when referring to the outside of the MHU. The MHU Basic MHU Orientation is Diagram 1.

7. WATER SUPPLY TO THE MHU

7.1. The sprinkler system shall be designed and installed to draw water from a prepackaged tank and pump system (TPS) that will be supplied by FEMA. This system will provide 30 gpm at 50 psig to the water point of connection on the underside of the home. Sprinkler system design and calculations shall be based on this water supply.

7.2. Sprinkler designers should use a churn pressure of 55 psig as the second point on the water supply curve in their design calculations.

7.3. Include a safety factor in the design calculations.

8. STANDALONE SPRINKLER SYSTEM

8.1. Provide, design, and install a wet pipe automatic sprinkler systems in accordance with this contract, the required and advisory provisions of NFPA 13D, and sprinkler component manufacturer’s recommendations. Each design shall specify the materials, components, and accessories needed to provide a complete and ready for use system.

8.1.1. Reserved

8.2. UL Listed, Intermediate-temperature (175°F), concealed sprinklers with glass bulb thermal elements shall be used. Concealed sprinklers shall have a flat or domed cover plate to minimize visual impact.

8.3. All system components and pipe, with the exception of the sprinkler concealer plates, shall be concealed from occupant view. A fabricated soffit finished to match the interior finish is the preferred concealment solution.

8.4. Locate sprinkler riser and drain line in the water heater closet. Riser should be positioned in a corner at the front of the closet, nearest to the door, to facilitate installation of the heat trace cable and operation of the drain valve. See Diagram 7.

8.5. The design shall include provisions and components necessary to allow the residential sprinkler system to be easily deactivated, disconnected and drained with common tools when FEMA

06-28-19 C-20.8 removes the MHU. Include a procedure by which the sprinkler system and all components can be drained into the sanitary sewer system of the MHU or the site installed sewer line during the deactivation process.

8.6. Pipe shall be installed beneath the level of the finished ceiling. In all cases, the headroom between the soffit and the finished floor of the MHU shall not be less than 7 ft.-6 in. See

Diagrams 5 and 6.

8.7. RESERVED.

8.8. The sprinkler riser shall run vertically; no horizontal pipe runs are be permitted in the interstitial space between the floor and the belly board. Point of connection for the water supply hose will be located at the bottom of the riser.

8.9. All electrical connections between the MHU and the TPS shall be 3 pole 4 wire 30 Amp 120/240 volt rated 12H IEC 60 309-2 International Pin and Sleeve standard device.

9. SPRINKLERS

9.1. UL Listed, Intermediate-temperature (175°F), horizontal sidewall concealed sprinklers with glass bulb thermal elements shall be used. Concealed sprinklers shall have a flat or domed cover plate to minimize visual impact. Sprinklers shall be UL Listed for maximum ambient temperature of 150°F, Reliable F1 Res 44 HSW (SIN 3531) or alternate approved by FEMA.

9.2. Sprinklers using eutectic metal heat sensitive elements shall not be used due to the risk of cold flow during storage. Sprinkler cover plates shall not be installed at the factory, but shall be shipped in packaging that will protect the plates from heating during anticipated transportation and storage.

9.3. Cover plates shall not be installed to cover the sprinklers prior to delivery of the MHU. This will allow inspection of the sprinkler head installation, and should prevent premature activation of the cover plates. Cover plates for each MHU shall be packaged in a new box, one box per MHU, and protected against physical damage during transport or storage. The box shall include one cover plate for each sprinkler installed in the MHU, plus one spare cover plate. Boxes shall be clearly labeled “Sprinkler System Parts” and shall be placed inside the refrigerator in the MHU.

9.4. The sprinkler, support cup, and opening in the wall or soffit shall be properly positioned and aligned so that installation of the cover plate in the field can be accomplished without the need for adjustments, alterations, or force to achieve proper alignment. Acceptance testing will include a test installation of a cover plate onto each sprinkler in the home to ensure proper alignment.

06-28-19 C-20.9

10. COVERAGE

10.1. In addition to the requirements of NFPA 13D, sprinklers shall be installed in every bathroom.

11. PIPE

11.1. This section applies to the standalone sprinkler system, and all interconnecting piping.

11.2. Except as otherwise noted herein, pipe and fittings used for sprinkler system shall be either

CPVC pipe that is UL listed for use in fire sprinkler systems, or Uponor AquaSAFE™ PEX pipe with

Uponor fittings.

11.2.1. Where CPVC pipe is used, all fittings and joints shall be solvent-welded; Listed gasket sealed sprinkler head adapters may be used at the contractor’s option.

11.2.2. FEMA’s MHUs will experience large temperature changes during prolonged storage.

Temperatures inside the homes can range between– 15°F and + 130°F. Sprinkler system pipe must be installed to accommodate the expansion and contraction of the pipe resulting from the

145°F variation in ambient temperature during storage without causing stress on the pipe. The pipes must be free to expand and contract without contacting the walls.

Where CPVC pipe is used, each run of pipe that is 10 feet long or longer shall be installed with either (1) a clear space of not less than ¼ inch between the CPVC pipe fitting and the MHU wall surfaces at each change of direction; or (2) a solvent welded Spears Short Repair Coupling (or approved alternate product) installed to allow both expansion and contraction of the pipe. These precautions are required to accommodate both expansion and contraction of the pipe during

MHU storage.

11.2.3. Non-metallic pipe or tubing shall be protected against damage from chafing during transport.

Provide and install chafing protection at all locations where non-metallic pipe or tube can rub against structural members, walls, metallic pipe hangers, or other components of the housing unit. Pipe hangers shall be UL Listed for use with plastic pipe.

11.3. Pipe or tubing shall be structurally supported by attachment to structural elements of the housing unit. Attachment to drywall, cabinetry, or other non-structural components is not permitted.

11.4. Pipe hangers/straps/supports shall be used to attach and support pipe and/or tubing.

11.4.1. Pipe hangers/straps/supports shall be attached to the structural member using screws to provide not less than 1½ inches of grip in wood studs.

On CPVC pipe, there shall be not more than 32 inches between pipe hangers.

On PEX pipe, the distance between pipe hangers shall not exceed 24 inches.

Where Uponor’s PEX-a Pipe Support is used, the distance between pipe hangers shall not

06-28-19 C-20.10 exceed 4 feet; and 50-lb. cable ties shall be used to secure the pipe to the pipe support in accordance with Uponor’s pipe support instructions.

11.4.2. Pipe and/or tubing (both metal and non-metallic) installed in a horizontal or near-horizontal orientation shall be attached as is required in the 24 CFR 3280 and the pipe manufacturer’s installation requirement. Tamper protection requirements as noted shall apply to all sprinkler pipe not located under the MHU which would be protected by skirting when the MHU is installed.

11.5. Routing of pipe across hallways or rooms shall be prohibited unless no other alternative routing is feasible. Pipe may be routed through closets to reduce the visual impact; however, pipe in closets shall be protected with a soffit system. (Exception: Water Heater Closet, which is a normally locked closed.)

11.6. Where a sprinkler is to be installed on the opposite side of a wall from the pipe, install sprinklers inside walls, flush with the wall surface, without soffit system where possible. See Diagram 6.

11.7. In bedrooms where bunk bed is shown on the floor plan, the sprinkler shall be positioned so that it is not easily reached by the occupant of the top bunk.

11.8. At the end of each branch line, provide and install a removable pipe plug or cap to be used to drain the system of all water after testing or during decommissioning. Drain plug or cap shall be accessible for use, and shall concealed behind a soffit system end cap.

12. SPRINKLER CONCEALMENT

12.1. The residential fire sprinkler system shall be concealed using a soffit. The soffit shall conceal all components of the fire sprinkler system. Any component that is within a locked space that the occupant does not have access to (e.g., the water heater closet) shall be considered concealed and does not require further concealment.

12.2. Decoshield®, Soffi-Steel®, and ALumA-Fit™ soffit systems are approved for this purpose.

Alternate soffit systems may be proposed for FEMA approval. Follow all of the manufacturer’s installation instructions. In order to ensure that the soffit system remains in place during transportation of the MHU, the maximum distance between soffit hangers shall be reduced by

50% from the distance required in the manufacturer’s installation instructions. (i.e., if the manufacturer’s installation instructions recommend hangers every 36 inches, the maximum distance between hangers shall be 18 inches.) If there are any specific maintenance instructions for the commercial product, include those instructions in the fire sprinkler system maintenance instructions. FEMA prefers that the commercial product be finished to match the interior of the

MHU.

12.3. The soffit may be fabricated from comparable material to the commercially available products.

FEMA prefers that the soffit be finished to match the interior of the MHU.

06-28-19 C-20.11

12.4. RESERVED.

12.5. All soffits shall be securely affixed to the structural members of the MHU. Attachment into drywall or cabinetry is not permitted.

13. TAMPER PROTECTION

13.1. Sprinkler systems and all components shall be designed, installed and maintained to protect against tampering and other foreseeable damage. The tamper resistance is intended to prevent the curious occupant from tampering with, damaging or disabling the sprinkler system.

13.2. Electric wiring that is exposed outside the MHU shall be encased in UL Listed water tight conduit. Wiring that is installed beneath the MHU and that is compliant with the 24 CFR 3280, the National Electrical Code and concealed by the skirting will be considered to be protected against tampering.

13.3. Sprinkler system components that are exposed shall be enclosed to prevent tampering. Pipe that is installed beneath the MHU and concealed by the skirting will be considered to be protected against tampering. The scope of work includes fabrication, installation, and finish of soffit systems to protect and conceal the sprinkler piping from view.

13.4. Any water control valves must be lockable. Valves that are located inside a locked closet shall not be required to be lockable. Locks that are keyed alike shall be provided for each required valve, door, or other lockable device that is associated with the sprinkler system. Use a Schlage pad lock keyed identically to the water heater closet described in the FEMA Rugged Based

Performance Requirements Version BB item number 24.2 dated 23 July2014.

13.5. Provide a padlock for each valve required to be lockable with two keys as described above.

13.5.1. The MHU shall be shipped with the padlock installed in the valves, locked in their Normal position. Keys for the padlock shall be placed in a sealed 4” x 9” envelope labeled “Keys for

Sprinkler Valve”. The envelope containing the keys shall be shipped inside the sprinkler system parts box inside the refrigerator.

14. MHU ELECTRICAL CONNECTION

14.1. The MHU shall accommodate the electrical requirements of the TPS.

14.2. Provide and install electrical supply to fulfill the requirements of the TPS. A minimum of single phase, 60 HZ, 220/240 volts at 30 AMPs shall be provided. See Diagram 4.

06-28-19 C-20.12

14.3. Locate electrical point of connection between the MHU and the TPS two (2) feet from the intersection (corner) of the MHU rear and the Curb Side. See Diagram 3.

14.4. RESERVED

14.5. Provide an electrical interface between the MHU and the TPS which shall meet the following requirements:

14.5.1. IEC 60 309-2 International Pin and Sleeve compliant mechanical interlock with NEMA 4X, NEMA 12K enclosure and rated IP67 or IP66 (Water tight);

14.5.2. Mechanical interlock (disconnect) shall be able to be locked in the ON or in the OFF position;

14.5.3. The mechanical interlock shall not allow the connection to be removed when the connection is in the on position.

14.5.4. The mechanical interlock shall have a female connection.

14.5.5. Switched mechanical interlocks with IEC 60309-2 compliant receptacles rated 3 pole 4 wire

125/250 Volts AC 30 Amp 12H. Proper Pin and Sleeve plugs and sockets will include

430MI12W in the part number. Typically the number identified has the manufacturer’s letter identification in front of it (e.g., XXX430MI12W).

14.5.6. The installation of the electrical interface shall not violate the IP67 or IP66 Rating.

14.5.7. Note: Mechanical interlocks that may meet this requirement are available from the following manufacturers: Thomas Betts / Russell Stoll, Leviton, Eaton and many others.

14.6. Provide a padlock and two keys to lock the Mechanical Interlock. The diameter of the shackle of the padlock shall not exceed 5/16”. The padlock shall be a “SCHLAGE” brand, 6-pin Everest cylinder with a C123 keyway that shall be keyed to a 6 pin combination. The key combination shall be “746105” for all locks.

14.6.1. The Mechanical Interlock shall be shipped with the padlock installed in the interlock, locked in the OFF position. Keys for the padlock shall be placed in a sealed 4” x 9” envelope labeled

“Keys for Mechanical Interlock”. The envelope containing the keys shall be shipped inside the sprinkler system parts box inside the refrigerator.

14.7. All wire between the circuit breaker panel and the Mechanical Interlock be concealed within the wall(s) of the MHU.

14.8. The circuit breaker(s) providing power for the TPS unit shall be equipped with a locking device that can secure the breaker(s) in the ON position. Devices shall be installed set to the ON position, and shall be equipped with an appropriate lock. Two keys shall be provided for each lock. The keys for the lock shall be attached to the lock or device inside the panelboard using a wire tie or shall be otherwise securely attached to the panelboard so that the keys will be in place after repeated road transportation and long term storage.

06-28-19 C-20.13

A locking device provided by the panelboard manufacturer is preferred over aftermarket devices. One example of an acceptable device is Siemens Padlocking Device, Catalog Number

ECPDL 2.

15. SPRINKLER RISER

15.1. The MHU shall have a design change to accommodate the water supply from the TPS.

15.2. Sprinkler riser shall run vertically through the floor assembly; no horizontal pipe runs are permitted in the interstitial space between the floor and the belly board. Diagram 7 illustrates the required configuration for the sprinkler riser.

15.3. The sprinkler riser shall be located inside the water heater closet. Sprinkler riser and drain valve shall be located at the front of the water heater closet to allow access for maintenance. If the contractor proposes to place the sprinkler riser in another location is proposed for the sprinkler riser, the contractor shall specifically call out that location and provide details to FEMA as to how the sprinkler riser is to be protected prior to start of work.

15.4. The sprinkler system point of connection to the water supply shall be located underneath the home at the base of the sprinkler riser. Point of connection shall be a 1½ inch diameter male cam-locking connector. Cam-Locking connector shall comply with Commercial Item Description

A-A-59326D, General Specification for Coupling Halves, Quick Disconnect, Cam-Locking Type.

15.4.1. The sprinkler system point of connection shall be capped with an aluminum or polymer locking style 1-1/2 inch female cam-locking dust cap. In addition to the locking mechanism in the dust cap, the arms of the cap shall be secured in the closed or locked position using a nylon cable tie at the conclusion of all work and testing of the sprinkler system, and before the

MHU is shipped.

15.5. The sprinkler riser shall be fabricated of Schedule 40 galvanized steel pipe, , 1½ inch diameter, from the point of connection to the ceiling of the water heater closet, and shall include a horizontal length of pipe not less than 12 inches long at the ceiling (see Diagram 7). Sprinkler pipe shall transition from steel to CPVC pipe or PEX tubing using an approved transition fitting at the end of the steel pipe. Sprinkler riser shall be supported by a Listed riser clamp installed at top side of the floor penetration. Provide and install a steel pipe hanger on the horizontal section of the riser that is securely attached to a stud. Hanger shall prevent both horizontal and vertical movement of the pipe.

Note: These sprinkler riser requirements are intended to prevent the damage to plastic pipe or tube that has occurred during transportation and installation of the MHU.

15.6. The portion of the sprinkler riser beneath the floor and above the belly board shall be insulated with Aerocel-SSPT® closed-cell elastomeric thermal insulation or FEMA approved alternative.

Insulation thickness shall be not less than 1 inch. Any joints in the insulation shall be sealed per

06-28-19 C-20.14 manufacturer’s instructions using Aerocel® Protape or alternative tape approved by the insulation manufacturer. Insulation shall be attached to the sprinkler riser securely so that it does not become dislodged during long-term storage or transportation, while permitting installation of heat trace cable against the pipe under the insulation.

15.7. The fire sprinkler water inlet shall be clearly marked “Fire Sprinkler Connection.” The label shall be fabricated of waterproof material and securely attached so the label will not be damaged, destroyed or rendered not legible during storage and transportation.

15.8. The annular space between the sprinkler riser pipe and the floor assembly shall be sealed for energy conservation and to prevent intrusion of vermin. Expanding foam may be used for this.

Ensure that the sealant will not prevent the installation of the heat trace cable.

15.9. The illustration in Diagram 7 shows the acceptable configurations for the sprinkler riser.

15.10. A check valve shall not be installed on the riser.

16. SPRINKLER DRAIN

16.1. A sprinkler drain line and drain valve shall be provided. The sprinkler drain shall be located in the water heater closet. Drain line shall be routed to the underside of the home near the point of connection for the sprinkler water supply. Drain line does not need to be insulated. Drain line shall terminate below the belly board with a standard male pipe thread fitting having NPT threads.

16.2. The sprinkler drain line shall be clearly marked “Fire Sprinkler Drain” both inside the water heater closet, and on the underside of the home. The labels shall be fabricated of waterproof material and securely attached so the labels will not be damaged, destroyed or rendered not legible during storage and transportation.

16.3. At the conclusion of all installation and testing, and after all water has been evacuated from the pipe, the sprinkler drain line shall be provided with a protective cover to protect the threads against damage and to prevent the intrusion of insects or vermin. A standard pipe cap will fulfill this requirement.

16.4. The annular space between the sprinkler drain pipe and the floor assembly shall be sealed for energy conservation and to prevent intrusion of vermin. Expanding foam may be used for this.

Ensure that the sealant used is compatible with the pipe used for the drain line, as determined by the pipe manufacturer.

06-28-19 C-20.15

17. DECOMMISSIONING

17.1. Sprinkler system shall include provisions and components necessary to allow the system to be easily deactivated, disconnected and fully drained with common tools when FEMA removes the

MHU. Include a procedure in the operation manual by which the sprinkler system and all components can be drained appropriately during the deactivation process.

18. QUALITY CONTROL

18.1. The design for the sprinkler system shall be incorporated into the DAPIA approved design for the

MHU.

18.1.1. The DAPIA does not have to approve the sprinkler system itself.

18.1.2. The DAPIA shall provide approval for the design for the method of fastening the sprinkler components to the MHU; the electrical connection to the TPS and any other items that fall within the DAPIA’s scope. All work shall be inspected by the IPIA for items that fall within the scope of the IPIA’s purview.

18.1.3. Provide an updated quality control plan for the manufacture of the MHUs that shall include the inspection and acceptance of the fire sprinkler system.

06-28-19 C-20.16

18.1.4.

18.1.5. Perform hydrostatic tests in accordance with the table below.

Pipe Type Test

Pressure

Test

Duration Test Criteria

Maximum Pressure

Drop

CPVC 200 psi 2 hours No visible leaks 4.0 psi

Uponor PEX 110 psi 2 hours No visible leaks 4.0 psi

Exception: Systems using Uponor PEX pipe may be pneumatically tested to 110 psi for 2 hours in lieu of hydrostatic testing if permitted by the MHU manufacturer. Where pneumatic testing is performed, the maximum allowable pressure drop over the 2-hour test shall not exceed

1.0 psi.

18.1.6. Submit a signed and dated certification of acceptance test completion with each MHU.

Submit certification of the fire sprinkler system which shall include details of tests performed and the results of each test.

18.1.7. Include a copy of the certification in the information packet shipped with the MHU.

18.2. After the required test, remove all water from the fire sprinkler system prior to shipping.

19. ACCESSORIES:

19.1. The sprinkler system accessories listed below shall be provided and installed as described below:

19.2. A red metal cabinet shall be provided and securely mounted to studs inside the water heater closet. Cabinet shall be large enough to provide secure storage for the spare parts listed below that are to be provided with the system. Cabinet door shall close fully when the required spare parts are installed inside the cabinet at the final home site. Cabinet shall be sized to store the following parts:

19.3. One spare sprinkler of each type of sprinkler installed in the home.

19.4. One spare sprinkler cover plate for each type of cover plate installed in the home.

19.5. One manufacturer’s approved sprinkler wrench for each type of sprinkler installed in the home.

19.6. Where a special tool is available to aid in removal of the soffit system, the tool shall be provided.

19.7. The spare parts listed above shall be provided with the system. All required spare parts shall be securely stored in a cardboard box placed inside the refrigerator. The spare parts shall not be installed inside the metal cabinet during system installation.

06-28-19 C-20.17

20. DOCUMENTATION, LABELING AND SIGNS

20.1. Complete documentation and labeling as noted herein shall be provided.

20.2. Labeling and Signs

20.2.1. All sprinkler system valves if installed shall be labeled to note their function and normal position. Example:

Sprinkler Control Valve - Normally Open.

20.2.2. Labeling shall be permanently affixed and durable.

20.2.3. Permanently marked circuit breaker(s) providing electrical power to the TPS to indicate their function.

20.2.4. A self-adhesive Fire Sprinkler Data Label shall be applied adjacent to the HUD and FEMA labels. The following information shall be included:

• Type of piping used for the sprinkler system.

• The manufacturer, model number and K Factor of sprinklers installed shall be included.

• Water supply design criteria – water flow in gallons per minute (gpm) and pressure in pounds per square inch (psi) required at the sprinkler system connection to the water supply.

• Drain location, water shut-off valve location and check valve location (if installed).

20.2.5. A Fire Sprinkler Data Label shall be attached adjacent to the sprinkler system riser indicating the water supply design criteria – water flow in gallons per minute (gpm) and pressure in pounds per square inch (psi) required at the sprinkler system connection to the water supply.

20.2.6. A two inch (2”) diameter label shall be located adjacent to each sprinkler indicating that no items are to be attached or hung on the sprinkler. ComplianceDesigns.com Label NHE-10035 is one acceptable label.

20.2.7. All sprinkler pipes shall be labeled as sprinkler pipes. Pipes that are concealed do not need to be labeled. Pipes should be labeled every five (5) linear feet.

20.2.8. Decommissioning label: Provide a ready-to-use 8.5" X 11" self-adhesive decommissioning label in the Document Holder. Decommissioning label will be applied to the inside of a kitchen cabinet when the MHU is removed from service to alert future owner(s) that the sprinkler system has been disabled. Decommissioning label shall be red with white letters and shall read:

This Manufactured Home was originally equipped with automatic fire sprinklers to provide the highest level of occupant safety. The installed sprinkler system is NOT connected to the domestic water supply and must be connected to a separate water

06-28-19 C-20.18 supply. The sprinkler system has been disabled, major components have been removed, and must be serviced by a qualified fire sprinkler technician to ensure continued occupant safety.

20.2.9. RESERVED.

20.3. Documentation

20.3.1. General: All instructions shall include a logical sequence of steps to achieve the stated objective. Instructions shall be specific to each unit and shall include explanatory material and full description of the actions that are to be taken and a complete list of the tools needed.

Photos or diagrams shall be specific to each unit and may be included to illustrate the instructions as necessary. Include checklists for each installation, decommissioning, and maintenance procedure. Instructions shall be written at the eighth-grade level of comprehension.

20.3.2. Documentation shall be submitted for review and approval by FEMA prior to delivery of the housing units. Submittal shall be in MS Word format. The operating instructions shall be revised and resubmitted as necessary to incorporate FEMA review comments. After acceptance of the operating instructions by FEMA, one durable, printed copy shall be bound and provided in each MHU, and an electronic copy in MS Word format shall be provided to

FEMA. Install the bound hard copy in the Document Holder.

20.3.3. Design documentation that is to be included in the Document Holder shall include:

20.3.3.1. As-built sprinkler system design drawings and hydraulic calculations.

20.3.3.2. All maintenance requirements as well as the schedule for maintenance intervals.

20.3.3.3. Instructions for activating the system when the housing unit is installed.

20.3.3.4. Instructions for deactivating the residential sprinkler system when the housing unit is deactivated.

20.3.3.5. Clearly state the sprinkler system water supply pressure and water flow requirements.

20.4. Operating Instructions - Provide complete operating instructions for the sprinkler system.

Instructions shall be based on FEMA’s operational protocols for the housing units. Separate chapters shall be provided for each of the following five (5) distinct operations:

20.4.1. Receipt to storage lot and storage (including any required maintenance and inspection);

20.4.2. Installation and setup (including all final testing to be performed);

20.4.3. The installation and setup instructions shall include final testing requirements making the assumption that the MHU residential fire sprinkler system is being connected to a water supply that meets the requirements identified as being provided from the TPS. The instructions shall include all steps required as well as all tests required.

20.4.4. Installation and setup instructions shall include a requirement to perform a hydrostatic test of the entire system, including the TPS, using the pump in the TPS.

06-28-19 C-20.19

20.5. System maintenance;

20.5.1. System decommissioning including drainage, preparation for transport and storage; and transport (transport documentation shall address pre and post installation transportation if they differ).

20.5.2. Include system testing instructions for use when the MHU is installed for use as temporary housing.

20.6. Quality and Testing Results

20.6.1. Submit a signed and dated certification of acceptance test completion with each MHU.

Certification shall include details of tests performed and the results of each test. Include a copy of the certification in the information packet shipped with the MHU.

20.7. Document Holder: Provide a durable document storage case securely mounted on the inside of the water heater closet. Document storage case shall be a Justrite No. 23304, or FEMA approved alternate. One copy of the all the TPS documentation listed above shall be provided inside this case or packet.

21. ACRONYMS

CFR – Code of Federal Regulations

CPVC – Chlorinated Poly Vinyl Chloride

FEMA – Federal Emergency Management Agency

GPM – Gallons per Minute

HP – Horsepower

HUD – Department of Housing and Urban Development

Hz – Hertz (cycles per second)

IEC - International Electrotechnical Commission

MHU – Manufactured Housing Units

NEC – National Electric Code

NEMA – National Electric Manufacturers Association

NFPA - National Fire Protection Association

ODP - Open Drip Proof

PEX - Cross-Linked Polyethylene

PSI – Pounds per Square Inch

06-28-19 C-20.20

PSIG – Pounds per Square Inch Gauge (or Gage)

TPS – internal components of the TPS system

TPS enclosure - the ridged housing that protects the TPS from weather, tampering and provides freeze protection.

TPS system – the TPS and the TPS enclosure

UL – Underwriter’s Laboratory

06-28-19 C-20.21

22. DIAGRAMS

Diagram 1. Basic MHU Orientation

06-28-19 C-20.22

Diagram 2. Mechanical Interlock Location

06-28-19 C-20.23

Diagram 3. Mechanical Interlock Wiring

06-28-19 C-20.24

Diagram 4. Example Mechanical Interlock

06-28-19 C-20.25

Diagram 5. Pipe / Sprinkler Installation

Cover Plate

Decoshield Sprinkler Housing

Sprinkler

4" - 6" below ceiling

Decoshield L-Shield

Cover Plate

SoffiSteel Sprinkler Housing

Sprinkler

4" - 6" below ceiling

Uponor PEX pipe (typical)CPVC Pipe installation (typical)

06-28-19 C-20.26

Diagram 6. Through-Wall Sprinkler Schematic

06-28-19 C-20.27

Diagram 7. Sprinkler Riser

Ceiling

Floor

Belly Board

1½” male cam-locking fitting. Locking dust cap required, but not shown here.1” male NPT thread with cap.

1" thick pipe insulation

Riser clamp

Rigid metal hanger secured to structural member to prevent rotation.

Drain line may be any pipe material or size allowed by NFPA 13D

1½” Schedule 40 steel pipe.

Galvanized required below the floor. Black iron or galvanized acceptable above the floor.

(1" pipe permitted only above the floor where approved hydraulic calculations show 1".)

Seal opening around pipe.

(Typical)

5 in.

± 1.0 in.

11 inches or greater

MHU

SPRINKLER

RISER

OPTIONS

Installation must prevent vertical movement of riser pipe when hose is attached to bottom of riser. Two acceptable alternatives are:

(1) Provide rigid pipe clamp on horizontal steel pipe attached to MHU structure.

(2) Provide “thrust block” of unistrut or non-absorbent material…