rn-2011-00342_0001-1 (2).jpg APPENDIX E
I
adjustments which may be needed to prevent damage to the SECTION AE605
manufactured home, particularly damage that can be caused by TIES, MATERIALS AND INSTALLATION
frost heave. Each ground anchor shall be marked with the man- AE605.1 General. Steel strapping, cable, chain or other
ufacturer's identification and listed model identification num- approved materials shall be used for ties. All ties shall be fas-
ber which shall be visible after installation. Instructions shall tened to ground anchors and drawn tight with turnbuckles or
accompany each listed ground anchor specifying the types of other adjustable tensioning devices or devices supplied with
soil for which the anchor is suitable under the requirements of the ground anchor. Tie materials shall be capable of resisting an
this section. allowable working load of 3,150 pounds (14 kN) with no more
Each approved ground anchor, when installed, shall be capa- than 2 percent elongation and shall withstand a 50 percent
ble of resisting an allowable working load at least equal to overload [4,750 pounds (21 kN)]. Ties shall comply with the
3,150 pounds (14 kN) in the direction of the tie plus a 50 per - weathering requirements of Section AE604.3. Ties shall con -
cent overload [4,725 pounds (21 kN) total) without failure. nect the ground anchor and the main structural frame. Ties shall
Failure shall be considered to have occurred when the anchor not connect to steel outrigger beams which fasten to and inter -
moves more than 2 inches (51 mm) at a load of 4,725 pounds sect the main structural frame unless specifically stated in the
(21 kN) in the direction of the tie installation. Those ground manufacturers installation instructions. Connection of cable
anchors which are designed to be installed so that loads on the ties to main frame members shall be / -inch (15.9 mm)
anchor are other than direct withdrawal shall be designed and closed -eye bolts affixed to the frame member in an approved
installed to resist an applied design load of 3,150 pounds (14 manner. Cable ends shall be secured with at least two U -bolt
kN) at 40 to 50 degrees from vertical or within the angle limita- cable clamps with the "U" portion of the clamp installed on the
tions specified by the home manufacturer without displacing short (dead) end of the cable to assure strength equal to that
the tie end of the anchor more than 4 inches (102 mm) horizon- required by this section.
tally. Anchors designed for connection of multiple ties shall be Wood floor support systems shall be fixed to perimeter foun-
capable of resisting the combined working load and overload dation walls in accordance with provisions of this code. The
consistent with the intent expressed herein. minimum number of ties required per side shall be sufficient to
resist the wind load stated in this code. Ties shall be evenly
When it is proposed to use ground anchors and the building spaced as practicable along the length of the manufactured
official has reason to believe that the soil characteristics at a home with the distance from each end of the home and the tie
given site are such as to render the use of ground anchors advis- nearest that end not exceeding 8 feet (2438 mm). When contir i
able, or when there is doubt regarding the ability of the ground uous straps are provided as vertical ties, such ties shall be posi-
anchors to obtain their listed capacity, the building official may tioned at rafters and studs. Where a vertical tie and diagonal tie
require that a representative field installation be made at the site are located at the same place, both ties may be connected to a
in question and tested to demonstrate ground anchor capacity. single anchor, provided the anchor used is capable of carrying
The building official shall approve the test procedures. both loadings. Multisection manufactured homes require diag-
onal ties only. Diagonal ties shall be installed on the exterior
AE604.2 Anchoring equipment. Anchoring equipment, main frame and slope to the exterior at an angle of 40 to 50
when installed as a permanent installation, shall be capable of degrees from the vertical or within the angle limitations speci-
resisting all loads as specified within these provisions. When fied by the home manufacturer. Vertical ties which are not con -
the stabilizing system is designed by an engineer or architect tinuous over the top of the manufactured home shall be
licensed by the state to practice as such, alternative designs attached to the main frame.
may be used, providing the anchoring equipment to be used is
capable of withstanding a load equal to 1.5 times the calculated
load. All anchoring equipment shall be listed and labeled as SECTION AE606
being capable of meeting the requirements of these provisions. REFERENCED STANDARDS
Anchors as specified in this code may be attached to the main ASTMC 270 -04 Specification for Mortar
frame of the manufactured home by an approved /16- inch -thick for Unit Masonry " ' ' ' ' ' ' ' ' ' ' ' " " ' " " ......... AE602
(4.76 mm) slotted steel plate anchoring device. Other anchor -
ing devices or methods meeting the requirements of these pro - NFPA 501 -03 Standard on Manufactured
visions may be permitted when approved by the building Housing .... ............................... AE201
official.
Anchoring systems shall be so installed as to be permanent.
Anchoring equipment shall be so designed to prevent self -dis-
connection with no hook ends used.
AE604.3 Resistance to weather deterioration. All anchoring
equipment, tension devices and ties shall have a resistance to
deterioration as required by this code.
AE604.4 Tensioning devices. Tensioning devices, such as
turnbuckles or yoke -type fasteners, shall be ended with clevis
or welded eyes.
782 2009 INTERNATIONAL RESIDENTIAL CODE®