Michigan Department of Licensing and Regulatory Affairs

Bureau of Construction Codes

Manufactured Housing1 Hour Administration

Title

• Course number:

• Instructor: Irvin J. Poke AIA, #020

• 1 hour of Administration for All Classifications

Definitions

• ActAct means 1987 PA 96 MCL 125.2301 st seq and know as the mobile home commission act. [rule (1)(b)]

Definition

• Mobile homeMobile home means a structure, transportable in 1 or more sections, which is built on a chassis and designed to be used as a dwelling with or without a permanent foundation, when connected to the required utilities, and includes the plumbing, heating, air-conditioning, and electrical systems contained in the structure. [Sec 2(g)]

Definition

• Mobile home parkMobile home park means a parcel or tract of land under the control of a person upon which 3 or more mobile home are located on continual, non recreational basic and which is offered to the public for that purpose. [sec 2 (i)]

Definitions

• Installer and servicersInstaller and servicers means a person including a mobile home dealer who for compensation installs or repairs mobile homes. [sec 2(e)]

• Operator Operator means an individual 18 years of age who is an officer of a corporation, a manager or member or a liability company, a general partner, a copartner or a sole proprietor. [rule 101(1)(v)]

Definitions

• Permanent foundationPermanent foundation means a base upon which a home is placed that is not subject to excessive movement caused by change in weather or home weight distribution. [rule 101(y)]

• Premanufactured unit means an assembly of materials or products intended that comprise all or part of a building or structure….. State of Michigan Premanufactured Unit

High Standards

• Under section 7(1) of the act, local governments proposing a higher standard than specified in these rules shall, after public hearing, file the proposed standard with the department for the commission’s review and approval. [rule 120(1)]

BSAR

Manufactured Housing Community

• Before any site is added to a communities license the following approvals are needed:– The department – LARA, BCC– DEQ

• Certification of the community sewer system under the provisions of R 325.3391*

• Certification of the community-owner system under the provisions of R 325.3391*

• [rule 214n(1)&(3)(a-c)]* SEE AGREEMENT

Home Construction Standards

• All new homes sold within Michigan shall be in compliance with the construction standards promulgated by the United State department of housing and urban development 24 C.F.R part 1700 et seq. and part 3280 and 3282, under the national manufacture housing construction and safety standards act of 1974. [rule 185(1)]

Home Construction Standard

• All new or pre-owned HUD approved homes brought into or sold within the State of Michigan shall be in compliance with the requirements for the appropriate roof loads.[rule 185(2)]

• M-55 west from Tawas City to the intersection of highway M-115 and then northwest along the centerline of M-115 to Frankfort. 30 PSF if above and 20PSF if below. [rule 185(3)]

Licensing Requirement

• A person who for compensation installs or disassembles the installation of homes, including their nonpermanent affixed steps, skirting, anchoring systems, or who service homes, for which service another Michigan license is not required, shall be licensed as an installer and servicers. [rule 214i(2)]

• Before applying for an original or renewing an installer/servicers license the operator shall completed a department approved installation instruction program within the current licensing year. [rule 214i (3)]

Federal Law

• Sec 604 (d) Whenever a Federal manufactured home construction and safety standard is in effect no State or political subdivision of a state shall have any authority…any standard regarding construction or safety applicable…of such manufactured home which is not identical to the Federal manufactured home construction and safety standard.

Local Government

• A local government shall not require a person licensed under the act to obtain a local license or to register its license unless the requirement is established by ordinance and the ordinance is approved by the commission under provisions of section 7 of the act. [rule 214d]

Local Government

• A local government may require the installation of skirting without obtaining the commission's approval, under section 7 of the act, if the requirement is established by ordinance and the ordinance is in compliance with the requirement of this rule. [rule 604 (3)]

Permits

• Permits shall be obtained for the construction of footings, accessories and the installation of homes from the enforcing agency charged with the administration and enforcement of the codes pursuant to Section 8a of the Stille-DeRossett-Hale Single State Construction Code Act, 1972 PA 230 MCL 125.1501 et seq. [rule 602 (6)]

Permits

• The following may be required by the local enforcing agency prior to a building permit being issued.– Detailed plan showing all load points– Foundation plans showing location and size of

foundation system– The anchoring systems that will be used– Egress stairways (prefab or site built)

Foundation Systems

• PA 230 of 1972, sec 10 (1) states: Except as otherwise provided in the code, before construction of a building or structure, the owner, or the owner’s builder, architect, engineer, or agent, shall submit an application in writing to the appropriate enforcing agency for a building permit.

Foundation Systems

• The community operator (owner) can designate a agent (manager) to obtain a building permit for the construction of the foundation system.

• The permit holder is responsible for calling for and obtaining inspections.

• A foundation permit may be separate from an installation permit.

Home Installation

• In the absence of the manufacturer’s installation instructions, the installation of the homes shall be in compliance with specifications prepared by a licensed design professional registered under 1980 PA 299 or, if a license design professional is not available in compliance with subparagraphs a-h. [rule 602(2)] or, if a licensed design professional is not available; in accordance with [rule 602 (2)(a) through (6)].

Home Installation

Private sitePrivate site• Can a licensed manufactured home

installer/repairer secure a building permit?– Yes, if the installer/repairer is the agent for the

owner. According to PA 230 section 10 (1) Except as

otherwise provided in the code, before construction of a building or structure, the owner, or the owner’s builder, architect, engineer, or agent shall submit an application in writing to the appropriate enforcing agency for a building permit

Home Installation

Private SitePrivate Site• What types of equipment or fixture connections can

a license manufactured home installer/servicer complete on a private site?

• None, each different licensing law, 1980 PA 299 (Occupational Code), 1929 PA 266 (Plumbing), 1956 PA 217 (Electrical) 1984 PA 192 (Mechanical) requires that a person licensed under these acts shall be required to complete connections on a privately owned site.

Home Installation

• If the calculated load is more than 50 amperes or if a permanent electrical supply line is used then the line shall be connected by a person who is licensed under the provision of Act No.217 of Public Act 1956. [rule 603(d)]

Compliance responsibility

• A community is responsible for the ensuring compliance with the spacing requirements in R 125.1941- rule 941, R 125.1944 – rule 947a and R125. 1947a- rule 947a(3) for the installation of the home within the community. [rule 604a]

Anchoring Systems

• Anchoring systems sold, manufactured or installed within the State shall be designed and constructed in compliance with HUD standards [Part 3280.306(2)] [rule 605(1)(a)]

• Shall be installed to manufacturers specifications. [rule 605(1)(b)]

• Be approved by the State Construction Code Commission. [rule 605(1)(c)]

Manufactured Home used as Dwellings

• MRC 2009 Appendix E required inspections for manufactured homes used as dwellings. Section AE305.5.1 indicated “reinforcing steel or structural framework of any part of any manufactured home foundation system shall not be covered or concealed without first obtaining the approval of the building official.”

Manufactured Home used as Dwellings

• Upon notification the following inspections shall be completed:– Foundation inspection

• After excavations and prior to placement of concrete– Concrete slab or under floor inspection

• After under floor building service equipment is installed

– Anchorage inspection• After the manufactured home has been installed and

permanently anchored. MRC - AE 305.5

Anchoring Systems

• Manufactured Home Construction and Safety Standards Part 3280 section 306 (a): Provisions for support and anchoring systems. Each manufactured home shall have provisions for support/anchoring or foundations systems that, when properly designed and installed, will resist overturning and lateral movement (sliding) of the manufactured home as imposed by the respective design loads.

Anchoring Systems

• For Wind Zone I, (majority of the USA) the design wind loads to be used for calculation resistance to overturning and lateral movement shall be the simultaneous application of the wind loads indicated in section 3280.305(c)(1)(i), increased by a factor of 1.5. The 1.5 factor of safety for Wind Zone I is also to applied simultaneously to both the vertical building projection, as horizontal wind load, and across the surface of the full roof structures, as uplift loading.

Anchoring System

• The manufacturer shall provide printed instructions with each manufactured home specifying the location and required capacity of stabilizing devices on which the design is based. The manufacturer shall provide drawings and specifications certified by a registered professional engineer or architect indicating at least one acceptable system of anchoring, including the details of required straps or cables, their end connections and all other devices needed to transfer the wind loads from the manufactured home to an anchoring or foundation systems. Part 3280 section 306 (b)

Anchoring System

• Anchoring system installation instruction Anchoring system installation instruction shall includeshall include:– The minimum anchor capacity required– The anchors resistance based on the maximum

angle of diagonal tie and /or vertical tie loading and angle of anchor installation, and type of soil in which the anchor is to installed

– That ground anchors should be embedded below the frost line and be at least 12 inches above the water table.

Part 3280 section 306 (2)

Anchoring System

• Anchoring system installation instruction shall Anchoring system installation instruction shall includeinclude:– That ground anchors should be installed to their full

depth, and stabilizer plates should be installed to provide added resistance to overturning or sliding forces. [Part 3280 (iv)]

– That anchoring equipment should be certified by a registered professional engineer or architect to resist these specified forced in accordance with testing procedures in ASTM Standard Specification D3953-91, Standard Specification for Strapping, Flat Steel and Seals.[Part 3280(v)]

Anchoring System

Design CriteriaDesign Criteria• The provisions made for anchoring system shall be

based on the following design criteria for manufactured homes.– The minimum number of ties provided per side of each

home shall resist design wind load [Part 3280 (c)(1)]– Ties shall be as evenly spaced as practicable along the

length of the manufactured home, with not more than two feet open-end spacing on each side. [Part 3280 (c)(2)]

– Vertical and diagonal ties may be connected to a single anchor. [Part 3280 (c)(3)]

Existing Manufactured Homes

• Under the authority of the local enforcing agency

• R102.7 MRC• 2009 IPMC (Maintenance of structures)

• Annual Inspections of Mobile Home Parks• DELEG Staff • Similar to a Site Review, not for the

Individual Homes

DEQ?

• Due to funding within the new fiscal year budget the Department of Environmental Quality’s Manufactured Housing Program consultant’s were reassigned to other programs within DEQ. Based upon a agreement entered into by DEQ and DELEG, several areas were transferred to the Bureau of Construction Codes.

The Agreement

Water Supply SystemsWater Supply Systems• DEQ will maintain oversight for water supply

systems in certain manufactured housing communities as set forth under the 1976 PA 399 Safe Water Drinking Act.

• DEQ will maintain oversight and responsibility for all manufactured housing community with private well systems and municipality owned system, type 1 systems only.

• LARA will be responsible for community owned water supply systems that are connected to municipal water systems.

The Agreement

Sewage Collection & Disposal SystemsSewage Collection & Disposal Systems• DEQ will maintain oversight of manufactured

housing communities which have proprietary water sewage treatment plants.

• DELEG will assume oversight for all sewer lines connected to such a system

• New community or addition to lines will comply with the requirement of the Michigan Plumbing Code

• The community resident is responsible for the sewer line connection between the unit and the community sewer line.

The Agreement

Sewage Collection & Disposal SystemSewage Collection & Disposal System.• System connection to any municipal sewer

line would be the responsibility of the local municipality for problems occurring between the connection of municipal sewer line and community line.

• DEQ will maintain responsibility for below grade septic system including issuance of permits for overall system and design for below grade system discharging over 6,000 gallons.

The Agreement

Sewage Collection & Disposal SystemSewage Collection & Disposal System• The local health departments would be

responsible for approval of permit for community septic systems under 10,000 gallons.

• LARA would assume oversight of sewage lines for septic systems under 10,000 gallons.

• The community resident is responsible for the sewer line connected between the unit and the communities sewer line.

The Agreement

• DrainageDrainage• LARA in conjunction with it local partner

organization (local building departments) will be responsible for enforcement and approvals for drainage issues within manufactured housing community.

• New or additions to manufactured housing community would have to comply with county drain commissioner and any standards set fourth in the MBC or MPC.

The Agreement

• GarbageGarbage• LARA will assume responsibility in other areas

such as garbage, insect and rodent control, and general operations and maintenance in conjunction with its local partner organization.

• The local partner organization (local building departments) will be responsible for enforcement of property maintenance standards in manufactured housing community in accordance with their locally adopted ordinances or in accordance with the “unsafe structures” provision of the MRC and MBC.

Contact the Bureau

• Bureau of Construction Codes Web Page– www.michigan.gov/bcc

• Bureau of Construction Codes Mail– P.O. Box 30254

Lansing, MI 48909• Plan Review Division

– Phone 517 241 9328• Building Division

– Phone 517 241 9308