[Adopted by Bill No. 76-91]
This Article is adopted pursuant to Section 425.0 of the County Building Code,Editor's Note: See Ch. 82, Building construction. NFPA Standard 501B and ANSI Code 119.1 in order to implement, interpret, make specific changes and otherwise carry out the provisions of the Building Code and § 266EE-3 of Article 41 of the Annotated Code of Maryland.
For the purposes of this Article, the following
words and phrases shall have the meanings respectively ascribed to
them by this section:
A building assembly or system of building subassemblies,
including the necessary electrical, plumbing, heating, ventilating
and other service systems, manufactured in its entirety or in substantial
part off-site and transported to the point of use for installation
or erection, with or without other specified components, as a finished
building or as a part of a finished building comprising two (2) or
more industrialized building units and not designed for ready removal
to or installation or erection on another site.
An industrialized building unit constructed on one (1) or
more chassis for towing to the point of use and designed to be used
without a permanent foundation for continuous year-round occupancy
as a dwelling. The removal of the unit from its wheels shall not be
used to change its character under this Article.
The county is in the hurricane zone as outlined on Weather Zone Map No. 119, Page 33 of NFPA 501B. To resist overturning and sliding imposed by high winds, mobile homes in mobile home parks or where elsewhere permitted shall be supported as described in § 173-44, and provided with anchors as described in § 173-43.
Mobile homes shall be provided with tie-downs
as described in Section 6 of NFPA 501B. These ties shall be attached
to approved anchors. The minimum number of such tie-downs shall be
eight (8), with each having a holding power of three thousand one
hundred fifty (3,150) pounds. See NFPA 501B for additional requirements.
Unless the tie-down system is designed by a registered professional
engineer or architect, tie-downs shall be placed as follows:
A.
Not more than twelve (12) feet on centers beginning
from front wall; not more than six (6) feet open-end spacing shall
be provided at the rear end of the mobile home unless additional tie-downs
are installed.
B.
Tie-downs exposed to weathering shall be resistant
to weathering deterioration at least equivalent to that provided by
a coating of zinc on steel of not less than thirty-hundredths (0.30)
ounce per square foot of surface coated.
C.
It shall be the ower's responsibility to make periodic
checks on the tie-downs.
When a unit is set up on piers, the piers shall
be located not more than eight (8) feet on center and, if less than
thirty (30) inches in height, shall be at least eight by sixteen (8
x 16) inches block, stacked perpendicular to the main beam with holes
up. These blocks must rest on poured concrete footings or at least
two (2) four-by-eight-by-sixteen inch solid masonry units laid parallel
to the main beam on solid ground. If pier height exceeds thirty (30)
inches, piers must be at least sixteen by sixteen (16 x 16) inches
laid as stated above. Wooden block may be used for leveling purposes
only and should be kept at a minimum.
A.
Footings shall be eight by sixteen (8 x 16) inches,
with bottom at least thirty (30) inches below final grade on undisturbed
soil.
C.
Steel beams shall be as follows: at least six-inch
I-beam ten (10) pounds per foot at ten (10) feet zero (0) inches on
center or equivalent. Beams shall be no more than five (5) feet from
end walls. Wood joists shall be two by eight (2 x 8) inches at sixteen
(16) inches on center. All beams or joists shall be anchored.
D.
The mobile home shall not be supported on such foundation
walls or piers or by means of the mobile home exterior walls. Ventilation
shall be provided in all crawl spaces. All crawl spaces shall be at
least eighteen (18) inches high.
E.
When a mobile home is to be located over a basement,
the above criteria may be used, except that footing and foundation
wall thickness shall be increased to the same criteria as for a stationary
house.
An inspection by all county agencies concerned
must be requested prior to the issuance of a certificate of use and
occupancy. This inspection should be requested not more than ten (10)
days after placing the unit on the site. The inspector shall cover,
but not be limited to, the setups and applicable connections of all
services, including anchorage. It shall be the choice of the owner
to occupy during this ten-day grace period. However, any violation
or deficiency must be corrected immediately after inspection is made
so that a use and occupancy certificate can be issued.
