Tie Down Manufactured Housing Anchor - Manual (Page 9)

INSTALLATION INFORMATION
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Cross Drive Rock Anchor - MRA
Engineered for installation into solid rock within 1 in. from bottom
of the anchor base. Exact alignment is achieved with the swivel
tensioning head.
• Drill 5/8” diameter hole 5-1/2” deep in center of anchor location.
Insert pilot stud into hole.
• Drill two 3/4” diameter holes, (the length of the rods) into the
rock at 45° angles, using the anchor head as a locating guide.
• Place rod through top and corresponding bottom web flange and
into 45° hole. Drive rod into rock. Rod must be driven into rock at
least 80% of it’s length to achieve minimum allowable pullout
resistance. Repeat using 2nd rod.
• Maximum pullout resistance is developed when ground surface
is solid rock. Maximum distance from lowest edge of anchor
flange to rock surface is 1 in.
X-Plate Anchor
X-Plate for Soil Class 2
2 - 23/32” x 30” rods included.
Painted Part #59118
Galvanized Part #59118G
23/32" x 30"
steel rod #59118
(2 included)
Part #59118-1
(1 required)
X-Plate Anchor with Stabilization Plate
Engineered for installation into difficult ground conditions that, when test-
ed with a soil test probe, exceed 500 in. lbs. (see notes below).
Using a soil test probe, determine the soil classification. Place the
X-Plate parallel to the building being secured with the flat plate to the
inside. Pound the plate into the ground so that the upper lip is ground
level. Using a heavy hammer or electric hammer gun, pound rods into the
ground through the box tubing guides welded onto the back side of the
stabilizer plate. Rods should be installed until
maximum 2” above the box tubing. Install strap as required.
Notes:
1. For Wind Zone 1 use only, max working load of the X-Plate is 2,200 lb.
(3,300# ultimate).
2. Difficult Soils Only - Defined as “Extremely hard soil preventing the
installation of an auger anchor to its full depth using a 1/2 HP Drive
Machine”. Torque probe readings at 12” to 18” of the surface must be
500 “/# min.
3. Cross drive anchor is NOT rated or intended to be used for direct pull in
vertical direction. Angle of resultant load must be at 40-50 degrees from
vertical. This anchor may not be appropriate for shear wall or column
anchorage.