HomeMy WebLinkAbout1985-2925 ANCHORING SYSTEMS FOR MOBILE HOMES •
2925
ORDINANCE NO.
AN ORDINANCE relating to buildings; regulating anchoring systems for
mobile hones; amending Section 11°06.100 of the Yakima
Municipal Code.
• BE IT ORDAINED BY THE CITY OF YAKIMA:
Section 1. Section 11.06.100 of the City of Yakima Municipal Code
is hereby amended to read as follows:
11.06.100 Anchoring Systems. A. All mobile homes, with the
exception of mobile homes located in a mobile home park, shall have an
anchoring system which shall meet the following requirements:
(1) Components of the anchoring system shall have a resistance to
weather deterioration that is at least equivalent to that of a
zinc coating that is not less than 0.3 ounces of zinc per
square foot of coated surface. Cut edges of zinc- coated
strapping do not need to be coated.
(2) An installer shall install, preload, and adjust a ground
anchor in accordance with the anchor manufacturer's
instructions. The installer shall supply a copy of such
instructions to the code administration manager or his
designee. A ground anchor, when installed, shall be able to
resist a working load of 3,150 pounds in ,the direction of the
tie plus a 50 percent overload (4,725 pounds total) without
failure. Failure occurs if the point of connection of a
vertical tie to an anchor is withdrawn more than 2 inches at
3,150 pounds, or when the point of connection of a diagonal
tie is moved more than 4 inches horizontally when a load of
3,150 pounds is applied at 45 degrees from the horizontal.
Ground anchors shall be marked with the manufacturer's
identification and model number in a location that is visible
after the anchor is installed. The manufacturer of a ground
anchor must provide instructions with each anchor that specify
the kind of soil for which the anchor is suitable.
(3) In the event concrete slabs or continuous footings are used to
• transfer the anchoring loads to the ground, the following
requirements apply:
(a) steel rods cast in concrete shall be able to resist the
loads and corrosion as specified for ground anchors.
(b) a deadman anchor may be used in place--of - a - listed anchor.
It shall be constructed of solid concrete at least 6
inches in diameter and 2 feet long; reinforced. with two
#4 steel rods; and installed at least 5 feet below the
surface of the ground.
• (c) a concrete slab may be used in place of a gr'`ound anchor
if it provides holding strength equal to that required
for ground anchors.
(4) Ties shall be of cable, strapping, or other approved
materials. Ties shall be fastened to'ground anchors and drawn
tight with • turnbuckles, yoke fasteners, or other approved
tensioning devices.
C(YIDEV M9 •
Tension devices.; end in clevis, forged, or welded eyes. Hook
ends are not permitted. Tension devices shall be designed to prevent
self-disconnection if the tie becomes slack. Cable tie eyes shall be
. secured with two U-Bolt cable clamps or an equivalent approved by the
code administration manager or his designee.
Tie materials shall resist a working load of 3,150 pounds with no 010•
more than 2 percent elongation, and shall withstand a 50 percent
overload (4,725 pounds total).
Ties shall connect the ground anchor to the main frame longitudinal
meMber. Ties shall not connect to steel outrigger beams that fasten to
the main frame, unless the manufacturer's installation instructions
approve the connection.
Diagonal ties shall lie at least 40 degrees from the vertical.
Vertical ties shall be substantially vertical. If a vertical tie is not
substantially vertical, the anchor shall be placed outboard of the tie's
connection to the main frame.
A cable frame tie shall be connected to the main frame by a 5/8 •
inch drop forged closed eye bolt through a hole drilled in the center of
the I-beam web, or by an alternative approved by the code administration
manager or his designee. The installer shall reinforce the web if
necessary to maintain the strength of the I-beam.
The installer shall space the ties as evenly as practical, and
shall locate a tie within 8 feet of each end of the mobile home. The
installer may attach two or more ties to a single ground anchor if the
anchor can withstand a total required load. The installer shall install
vertical ties at each detached corner or a clerestory roof and of add-on
sections of expandable mobile hames.
Section 2. This ordinance shall be in full force and effect thirty
days after its passage, approval and publication as provided by law and
the City Charter.
PASSED BY THE CITY COUNCIL, signed and approved this Pill day of
1985.
/O
MAYOR
ATTEST: 'H '
:‹2 -
CITY CLERK
Publication Date DEC 2 0 1985
Effective Date r JAN 2 0 1986
COMDEV 110