DEPARTMENT OF CONSUMER AND INDUSTRY SERVICES
DIRECTOR'S OFFICE
MANUFACTURED HOUSING GENERAL RULES
R 125.1602 Installation.
Rule 602. (1) For all
new homes brought into or sold in Michigan, the manufacturer shall provide express written instructions for the installation
of each home specifying the location and required design load capacity of the piers and the location and the required design
load capacity of any other recommended stabilizing systems, if required. All homes shall be installed according to the manufacturer's
installation instructions. The person installing a home has the option of installing a plastic vapor barrier on the ground
under the home, unless the manufacturer's installation instructions specifically mandate the placement of the vapor barrier.
Crossbeaming shall not be allowed under a home installed after July 16, 1998, unless approved by the manufacturer of the home.
In the case of a pre-owned home, the approval also may be given by
(2) In the absence of the manufacturer's installation
instructions, the installation of homes shall be in compliance with specifications prepared by a licensed design professional
registered in compliance with the requirements of 1980 PA 299, MCL 339.101 to 339.2721 or, if a licensed design professional
is not available, in compliance with all of the following specifications:
(a) All grass shall be removed and the foundation
footing shall be installed on or in stable soil.
(b) Piers shall be installed directly under each main frame beam,
unless crossbeamed after approval from the manufacturer of the home or a licensed design professional registered in compliance
with 1980 PA 299, MCL 339.101 to 339.2721.
(c) Footing and pier spacing shall not exceed the minimum span identified
in table A-1 and a positive grade shall be established.
(i) All footings shall extend 42 inches below actual grade.
The footing may be less than the 42-inch depth if supported by a soil analysis. A footing shall be installed in compliance
with R 408.30401et seq. of the Michigan building code.
(ii) Piers shall be located under each main beam and marriage
line beam starting within 2 feet from the end of each beam then spaced according to this table.
(iii) Piers may be
offset up to 1 foot to allow for such obstruction as axles (if permanently attached to frame).
(iv) Additional piers
shall be added on each end of every opening in the marriage wall which is 4 foot or larger and shall be considered columns.
(v) Perimeter piers shall be installed on sidewall openings greater that 4 foot and exterior doors.
(vi) Footing
shape may be other than square. Maintain
(d) Piers shall be installed under the center beam/marriage line of multisectional
homes at all interior openings of more than 4 feet on the marriage wall and at each end of the marriage line.
(e) The
piers nearest each end of the home shall be within 2 feet of either end of the home frame.
(f) Concrete block piers
shall be constructed of at least 8-inch by 8-inch by 16-inch blocks and placed on the foundation footing. The blocks shall
be placed with the open cells vertical. A cap shall be placed on top of the pier. A wood plate that has the same dimensions
as the pier and cap may be placed on top of the cap for additional leveling. Shims may be fitted and driven tight between
the wood plate or cap and the main frame I-beam and shall not take up more than 1 inch of vertical height.
(g) Pier
tiering shall comply with all of the following requirements:
(i) Piers 30 inches in height or less above a footing
may be single-tier construction composed of 8-inch by 8-inch by 16-inch open cell concrete blocks that conform to ASTM standard
C 90-99. The standard is adopted by reference in R 125.1102 of these rules. Blocks shall be capped with 2-inch by 8-inch by
16-inch hardwood or treated wood, with a solid concrete block cap, or with a 1/4-inch solid steel plate. Blocks shall be set
with the openings vertical.
(ii) Piers that are more than 30 inches in height above a footing shall be double-tier
construction with blocks interlocked and capped with a 4-inch by 16-inch by 16-inch solid concrete cap.
(iii) The concrete
blocks of double-tier piers that are more than 80 inches in height above a footing shall be filled with concrete and steel
reinforcing rods.
(h) Piers shall be installed perpendicular to the main frame of the home and shall not be offset
from the foundation footing.
(3) Crossover heat ducts shall not lie on the ground. Heat duct strapping shall not restrict
the opening.
(4) A home shall not be placed in a designated floodway, as determined by the Michigan department of environmental
quality.
(5) An anchoring system shall be installed on a home.
(6) Permits shall be obtained for the construction
of footings and accessories and the installation of homes from the enforcing agency charged with the administration and enforcement
of the codes pursuant to the Stille-DeRossett-Hale Single State Construction Code Act, 1972 PA 230, MCL 125.1501 to 125.1531.
History: 1979 AC; 1982 AACS; 1983 AACS; 1985 AACS; 1998 AACS; 2003 AACS; 2008 AACS.
R 125.1602a Installation; systems
compatibility
Rule 602a. All components used in the installation of a home, such as foundation footings and piers, shall
be uniform in construction . History: 1980 AACS; 1998 AACS; 2003 AACS.
R 125.1214i Installer and servicer; licensing
required
Rule 214i. (1) An applicant shall submit
a completed licensing application to the department on a form prescribed by the department before the date on which the applicant
intends to be an installer and servicer.
(2) A person who, for compensation installs or disassembles the installation
of homes, including their nonpermanently affixed steps, skirting, and anchoring systems, or who services homes, for which
service another Michigan license is not required, shall be licensed as an installer and servicer.
(3) Before applying
for an original or renewal installer and servicer license, the operator shall complete 12 hours of department-approved installation
programs throughout the current licensing cycle. History: 1998 AACS; 2003 AACS; 2008 AACS.
R 125.1604a Compliance responsibility.
Rule
604a. A community is responsible for ensuring compliance with the spacing requirements in R 125.1941, R 125.1944, and R 125.1947a(3)
for the installation of homes within the community. History: 1998 AACS; 2003 AACS.
R 125.1941 Required distances between
homes and other structures.
Rule 941. (1) A home shall be in compliance with all of the following minimum distances,
as measured from the wall/support line or foundation line, whichever provides the greater distance:
(a) For a home
not sited parallel to an internal road, 20 feet from an adjacent home, including an attached structure that may be used for
living purposes for the entire year. (b) For a home sited parallel to an internal road, 15 feet from an adjacent home, including
an attached structure that may be used for living purposes for the entire year if the adjacent home is sited next to the home
on and parallel to the same internal road or an intersecting internal road.
(c) Ten feet from an attached or detached
structure or accessory of an adjacent home that may not be used for living purposes for the entire year.
(d) Fifty
feet from permanent community-owned structures, such as either of the following:
(i) Clubhouses.
(ii) Maintenance
and storage facilities.
(e) One hundred feet from a baseball or softball field.
(f) Twenty-five feet from the
fence of a swimming pool.
(g) Attached or detached structures or accessories that may not be used for living purposes
for the entire year shall be a minimum distance of 10 feet from an adjacent home or its adjacent attached or detached structures.
(2) A home, including an accessory, shall be set back all the following minimum distances, where applicable:
(a)
Seven feet from the edge of the back of the curb or the edge of an internal road paving surface.
(b) Seven feet from
a parking space on an adjacent home site or parking bay off a home site.
(c) Seven feet from a common sidewalk.
(d)
(3)
A carport shall be in compliance with both of the following setbacks if it is completely open, at a minimum, on the 2 long
sides and the entrance side:
(a) Support pillars that are installed adjacent to the edge of an internal road shall
be set back 4 feet or more from the closest edge of the internal road and 2 feet or more from the closest edge of a common
sidewalk, if provided.
(b) Roof overhang shall be set back 2 feet or more from the edge of the internal road.
(4)
Steps and their attachments shall not encroach into parking areas more than 3 1/2 feet.
(5) A home sited on one side
of the dividing line between a community constructed under a previous act and an expansion of the community constructed in
compliance with the requirements of the act shall be a minimum of 13 feet from a home sited on the other side of the dividing
line. History: 1979 AC; 1980 AACS; 1991 AACS; 1998 AACS; 2003 AACS.
R 125.1944 Setbacks from property boundary lines.
Rule 944. (1) Homes, permanent buildings and facilities, and other structures shall not be located closer than 10 feet
from the property boundary line of the community or home condominium and shall not be required by a local ordinance, unless
approved by the commission, to be more than 10 feet from the property boundary line.
(2) Homes, permanent buildings
and facilities, or any other structures that abut a public right-of-way shall not be located less than 50 feet from the boundary
line. If the boundary line runs through the center of the public road, then the 50 feet shall be measured from the road right-of-way
line. Homes, permanent buildings and facilities, and other structures shall not be required by a local ordinance to be more
than 50 feet from the boundary line, unless the commission approves the ordinance. This rule does not apply to internal roads
dedicated for public use. History: 1979 AC; 1985 AACS; 1998 AACS; 2003 AACS.
R 125.1947 Optional improvements.
Rule
947. (1) Optional improvements may fulfill part or all of the total designated open space requirement.
(2) Optional
improvements shall be in compliance with current state codes and applicable laws and ordinances pertinent to construction,
including the obtaining of the appropriate state or local permits pertinent to the facility or structure being constructed.
History: 1979 AC; 1985 AACS; 1998 AACS; 2003 AACS.
R 125.1947a Communities constructed pursuant to previous acts or
local ordinances, or both.
Rule 947a. (1) A community licensed under the construction standards of previous acts and
rules for which a license was legally issued and valid at the time these of rules, or any subsequent amendment of these rules
is not required to fulfill the current requirements for community construction in these rules. Amendments to the community
construction standards in these rules do not apply to complete applications for plans approval and permits to construct received
by the department before the effective date of such amendatory rules.
(2) A community that expands shall conform to
all the requirements pertaining to community construction in these rules for the expansion.
(3) A community constructed
according to the standards in previous acts, rules, or local ordinances shall be maintained or altered in a manner consistent
with the standards in effect at the time of original construction, including but not limited to spacing of homes, road widths
and sizing and design of community infrastructure, with the following exceptions:
(a) A community shall be adequately
lighted during darkness.
(b) If individual home site meters are installed, then the installation shall be in compliance
with R 125.1932, R 125.1934, and R 125.1935.
(c) Meters that are owned by the community shall be calibrated in compliance
with R 125.1938.
(4) In communities issued a permit to construct before February 28, 1979, enclosed structures attached
to homes are considered obstructions in the 10-foot side yard space. All other structures or vegetation are not obstructions
if there is a 4-foot wide ground level pathway which is obstruction free to 7 feet in height and which runs the length of
the side yard with access to the road. History: 1979 AC; 1985 AACS; 1998 AACS; 2003 AACS; 2008 MR 11,
