HomeMy WebLinkAboutAPPROVED ANCHOR SPECSPage 1 of 2
LISTING & TESTING DIVISION
RADCO, A
Twining Company
3220 E. 59th Street
Long Beach, CA 90805
Tel: (562) 272-7231
Fax: (562) 529-7513
LISTING
#1344
Issued: Aug 2012
Reissued: Jan 2019
Subject to Renewal:
Jan 2020
PRODUCT:CONCRETE, ROCK, AND SOIL GROUND ANCHORS
M ANUFACTURER:M inute M an Anchors, Inc.
305 W . King St.
East Flat Rock, NC 28726
PLANT LOCATION:305 W . King St.
East Flat Rock, NC 28726
APPLICATION:HUD Code Manufactured Hom es & Modular Structures
1.INTRODUCTION
At the request of Minute Man Anchors, Inc., RADCO investigated
the possibility of listing ground anchors produced by Minute Man
Anchors, Inc., for approval of ground anchors in accordance with
RADCO’s Listing Requirements for Ground Anchors.
RADCO’s Listing Requirements for Ground Anchors defines the
classification and perform ance requirem ents of each respective
ground anchor model. The requirements are in general
accordance with those developed by the MHI Ground Anchor
Task Force and adopted by HUD’s MHCC on March 9, 2011 after
accepting m inor revisions offered by HUD staff.
2.DESCRIPTION
There are tw o ca te go ries of ground anchors that are specifie d in
this listing. The first group is soil ground anchors, w hich pertain
to all anchors designated for soil classes 2, 3, 4, and 5. The
second group is rock and concrete (non-soil) ground anchors,
which are designed for installation into class 1 conditions.
All M inute Man G ro un d A n ch ors are m a nufactured using steel in
conform ance with ASTM A-36. The m odels under this listing vary
with respect to shaft diam eter, num ber and location of helixes,
length of shaft and stabilizer device. Table 1 shows a com plete
description of each ground anchor m odel, as well as a
corresponding stabilizer device.
All ground anchors have a minimum working load of 3,150 lbs
and a minimum ultimate load of 4,725 lbs.
3. INSTALLATION
The Installation of the ground anchors is to be in accordance with
the Manufacturer’s Installation Instructions. In addition, each
anchor must be installed in accordance with the following:
a) The proper soil class. (Tables 2 & 3, and notes)
b) Minim um angle of pull to the horizontal. (Tables 2 & 3)
4. EVIDENCE SUBMITTED
4.1 Testing has been conducted to verify the compliance of
Minute Man ground anchors to the RADCO Listing
Requirements for Ground Anchors.
4.2 The quality and process control system used in the
manufacture has been submitted to RADCO. An
adequate m ethod of traceability is maintained by the
m anufacturer. A fo llo w-up quality assurance audit
program is maintained by RADCO.
5. RECOMMENDATIONS
RADCO recommends that Minute Man Anchors, Inc. ground
anchors be accepted for use with HUD code manufactured
hom es and m odular structures provided that:
5.1 Each ground anchor will be m arked with a label, a
facsimile of which is shown in figure 1. The label for
each facility denotes the m odel num ber, RADCO name,
and Listing #1344.
5.2 All products are produced only at the facility referenced
in this listing.
5.3 The Quality control procedures are maintained by the
manufacturing facility as submitted.
5.4 The audit system of RADCO is maintained.
5.5 All products are installed per the m anufacturers
installation instructions and section 3 of this listing.
6. APPRO VAL
This listing is subject to approval on an annual basis by RADCO.
Updating and further inform ation will be included and/or
resubm itted as necessary.
Figure 1: Sample Label
Page 2 of 2
Note 1: See 24 CFR Part 3285 Model Manufactured Home
Installation Standards, section 202: Soil Classification and
Bearing Capacity & Table 3285.202 for an explanation of soil
classification numbers. Please note that anchors approved for
use in soil class 4 may be used in soil classes 3 or 2, and
anchors approved for use in soil class 3 may be used in soil
class 2.
Note 2: The stabilizer plates are available in 12" or 17" width.
The stabilizer caps are 6" diameter. “X drive” refers to cross-
driven anchors which utilize two rods angled at 45 degrees from
the vertical.
Note 3: Anchor model MMA-GW 2NU has a 6" stabilizer cap as
well as a 32" long stabilizer rod which is driven through the
stabilizer cap and downward at 45 degrees from the horizontal.