Section 18613.4 Of Article 2. Mobilehome And Special Occupancy Park Lots From California Health And Safety Code >> Division 13. >> Part 2.1. >> Chapter 5. >> Article 2.
18613.4
. (a) All manufactured homes or mobilehomes, when initially
installed or subsequently reinstalled on a different lot pursuant to
Section 18613, shall be installed to resist, in conjunction with
vertical loads, either forces from horizontal wind pressures of 15
pounds per square foot or the design wind load of the home, whichever
is greater.
(b) For the purposes of complying with subdivision (a), all
manufactured homes or mobilehomes with manufacturer's installation
instructions that include requirements for tiedowns shall be
installed in accordance with all of the following:
(1) The manufacturer's installation instructions.
(2) If not included in the manufacturer's installation
instructions, a minimum of four additional tiedowns per section shall
be installed to resist the same wind forces in the longitudinal
direction of the manufactured home or mobilehome as the total of
those forces required to be resisted in the transverse direction. No
portion of the tiedown extending beyond the vertical plane of an
exterior wall of the manufactured home or mobilehome shall be above
the ground.
(3) When used, concrete or steel piers shall have mechanical
connections to the home and their footing that resist separation of
the supports from the home and the footing. Mechanical connections
shall not require modifications to the manufactured home or
mobilehome.
(c) For the purposes of complying with subdivision (a), when no
manufacturer's installation instructions are available that include
requirements for tiedowns, the manufactured home or mobilehome shall
be installed in accordance with both of the following:
(1) Department regulations, which shall include requirements for
tiedowns meeting the standards in subdivision (a).
(2) The requirements specified in paragraphs (2) and (3) of
subdivision (b).
(d) For the purposes of complying with subdivision (a), all
manufactured homes or mobilehomes may be installed or reinstalled in
accordance with plans and specifications signed by a licensed
architect or engineer that meet the requirements of this section.
(e) Manufactured homes or mobilehomes installed before the
effective date of the act that added this section that do not meet
the standards in subdivision (a) and need to be reinstalled due to
damage caused by wind or seismic forces shall be reinstalled to meet
the requirements of subdivision (a) and paragraphs (2) and (3) of
subdivision (b), if federal funds are available for grants or direct
payment of the additional installation costs.
(f) Nothing in this section prohibits the use of alternative
materials, installation methods, devices, et cetera, as permitted in
Section 18305, as long as the forces specified in subdivision (a) and
in paragraph (2) of subdivision (b) are resisted.
(g) The department shall adopt emergency regulations in accordance
with Chapter 3.5 (commencing with Section 11340) of Part 1 of
Division 3 of Title 2 of the Government Code in order to implement
the purposes of this section.
(h) The department shall develop standards for mechanical
connections for concrete block supports that connect the blocks to
the manufactured homes or mobilehomes and their footing and resist
the separation of the supports from the home and the footing. By the
adoption of the act that adds this subdivision, it is not the intent
of the Legislature that the concrete blocks used as vertical supports
be required to be mechanically attached to the manufactured homes or
mobilehomes and their footings.
(i) This section shall not apply to the installation of any
manufactured home or mobilehome for which escrow has been opened in
accordance with Section 18035 prior to the operative date of the act
that adds this section.
(j) This section shall become operative 60 days after the date
that the act that adds this section is chaptered.