Current through Reg. 51, No. 058, March 25, 2025
These specifications are standards set by the Department of
Highway Safety and Motor Vehicles for new and used mobile/manufactured homes or
park trailers.
(1) Anchors:
(a) Type I anchor holding power for homes
manufactured before July 13, 1994, shall be tested to a working load of three
thousand one hundred and fifty (3, 150) pounds, with an ultimate load of four
thousand seven hundred twenty-five (4, 725) pounds.
(b) Type II anchor holding power for homes
manufactured after July 13, 1994, shall be tested to a working load of four
thousand (4, 000) pounds, with an ultimate load of six thousand (6, 000)
pounds.
(2) Frame Ties:
(a) All frame ties for new and used
mobile/manufactured homes must have a factory fabricated strap connected at the
top of the I-beam to an I-beam clamp approved by the department pursuant to
Rules 15C-1.0105 and
15C-1.0107, F.A.C.
(b) Diagonal tie-downs for new and used
mobile/manufactured homes, in all wind zones, shall be spaced no farther apart
than five feet four inches (5'4'') on center with anchors placed within two
feet (2') of each end. Note: Where sidewall strap separation is greater, they
must be tied individually. Each frame tie shall be installed to the component
manufacturer's instructions. (Refer to below drawing)
Click here to view
image
(3) Longitudinal Tie-downs. All new and used
mobile/manufactured homes, installed sixty (60) days after the effective date
of this rule, must have longitudinal tie-downs or other approved longitudinal
stabilizing systems meeting the specifications of Rules
15C-1.0105,
15C-1.0107 and
15C-1.0108, F.A.C., and designed
to resist horizontal wind loads in the long direction of the home (i.e.: wind
load applied to each end of the home). The longitudinal tie-downs are in
addition to the anchoring systems required along the exterior side walls and/or
marriage walls of the mobile/manufactured home.
(a) When anchors and straps are used for
stabilizing the home in the longitudinal direction the strap must connect to a
clip welded onto the I-beam or other device connected mechanically. Unless
factory installed, the connection device must be approved by the department
pursuant to Rules 15C-1.0105 and
15C-1.0107, F.A.C. At least four
(4) anchors and straps are required (i.e., 16 per double-wide home) at the end
of each section of the mobile/manufactured home.
Example of Longitudinal Tie-down Placement
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(4) Marriage Wall/Centerline Ridge Beam
Column Ties, Shear Wall Ties and Frames Ties:
(a) Centerline ties are required for all new
and used multiple section homes.
(b) Multiple section homes are to be secured
at the centerline with straps to the specifications in the manufacturer's
manual or at the locations designated on the home. In addition to centerline
ties specified by the manufacturer, a centerline tie must be attached within
two feet (2') of each end of each section of the mobile/manufactured home.
Where necessary, an approved bracket shall be added by the installer.
(c) Centerline tie connections must be
designed to swivel where attached to the mobile/manufactured home and must be
connected to the mobile/manufactured home by means of grade #5 bolts with a
minimum diameter of one-half inch (1/2'').
(d) As an alternate use with existing
brackets or a manufacturer's welded device, the approved method for installing
straps to sidewall and centerline brackets is to loop the strap using a crimp
seal with two (2) crimps evenly spaced and protected by a radius clip or
manufactured bent/formed radius protective tab. Note: Bracket lacing or field
threading shall not be used.
(5) Roof Ties:
(a) Homes manufactured after June 15, 1976,
without over-the-roof ties, but designated "Hurricane Resistant" per the
Federal Manufactured Home Construction and Safety Standards, section
3280.305(c)(2), as hereby incorporated by reference, shall not require roof
ties. All manufactured homes manufactured after July 13, 1994, shall require
vertical and frame tie points.
(b)
Homes manufactured before July 13, 1994, where factory installed roof ties are
not evident and it cannot be determined that the mobile/manufactured home is
"Hurricane Resistant" without such ties, then the number of roof ties, as
required by the table below, shall be installed so as to not contact with the
structure, except at adequately reinforced areas, where additional load will
not damage the structure.
1. Single-wide homes
less than or equal to sixty feet (60') - three (3) roof ties.
2. Single-wide homes greater than or equal to
sixty-one feet (61') - four (4) roof ties.
3. Double-wide homes - roof ties required
only if installed by the manufacturer.
(c) All new park trailers manufactured after
January 2, 1995, shall have at least three (3) factory installed vertical tie
points in addition to the required frame ties.
(d) End roof ties or vertical ties shall be
installed at not more than twenty-four inches (24'') from the end of the
structure or at the first stud and truss and attached to the same anchor as the
frame tie. If the frame does not extend to the back end wall, then the roof tie
shall be installed within six inches (6'') of the end of the chassis.
(e) Intermediate roof ties or vertical ties
shall then be located at midway or equally spaced between the end roof ties, as
feasible.
(f) Double-wide homes
manufactured before July 13, 1994, may not require roof ties, unless such ties
are installed or provided by the manufacturer. However, additions or canopies
may require such ties depending on the type of construction. All are subject to
the same frame tie requirements as single-wide homes.
(g) Over-the-roof tie-down straps or tie
points shall be connected to a ground anchor. If a strap has been damaged, cut
off or removed, a replacement strap shall be installed or spliced using two (2)
listed strap seals affixed to twelve inch (12'') overlap of strap with two (2)
crimps evenly spaced on the seal.
(h) Used homes designed and requiring
over-the-roof tie-downs and having a permanent type structure adequate to
provide structural rigidity and stability, meeting the design loads as required
by the Standard Building Code, as hereby incorporated by reference, shall not
be required to have over-the-roof ties in the area of the addition, but shall
require one at each end.
(6) Center Line Fastening: Multiple section
homes shall be mechanically fastened every twenty-four inches (24'') at the
bottom, end walls and roof. A minimum thirty (30) gauge, eight inches (8'')
wide, galvanized strip shall be centered over the peak and fastened with
galvanized roofing nails at two inches (2'') on center at both sides of center
line.
Rulemaking Authority 320.011, 320.8325(1) FS. Law
Implemented 320.77(10), 330.822(12), 320.8285, 320.8325, 320.835(2)
FS.
New 1-10-94, Amended 10-2-95,
3-31-99.
