-4: Proper Installation of Ground Anchors and Tie Down Straps

-4: Proper Installation of Ground Anchors and Tie Down Straps A. Ground anchors and tie down straps shall be aligned close to the location of the support piers, but not in the center of the pier, as that will interfere with frame ties. B. All anchors shall be installed in a vertical position or with the anchor rod in direct alignment with the force of the loading. C. Anchors to reinforced concrete slabs must be strength comparable to that presented above. If a Factory-Built home is to be placed on a monolithic concrete slab, the ground anchors may be replaced with anchor bolts imbedded in the concrete slab. The location of the anchor bolt in relation to the longitudinal support I-beam will be the same as the ground anchors. D. Other anchors which can withstand 4,750 lbs. of pull without failure may be approved by the Factory-Built Home Division of the State Fire Marshal's Office as equivalent to above specifications. E. All ground anchors installed in a vertical position having frame tie connections shall have approved stabilizer plates, stabilizer caps, concrete collar, or other approved stabilizer devices installed to resist horizontal movement. The stabilizer device must be installed according to the manufacturer instructions, and the top of the device must be flush with the surface of the soil. If a concrete cap is used it must be a minimum of 10” in diameter and 18” deep. Exception: Stabilizer plates are not required with coral anchors or at centerline or marriage line locations. F. Anchors must be installed to full depth with the bottom of the anchor head within one (1) inch of the soil’s surface. G. The "Standard Method of Test for Manufactured Home Anchors, Parts A and B" is described in the Federal Manufactured Home Construction and Safety Standards, 24 CFR Section 3280.401. H. Previously installed anchors, extracted from the initial installation site, shall not be used in the installation of the Factory – Built home at a new location. I. The use of any alternate systems of anchoring, not approved by HUD, may be used if the installer provides proof that the manufacturer of the home has provided written approval of the use of such systems and that the written approval is provided with the submittal of the Property Locator/Certificate of Inspection Form. J. All ground anchors, tie down devices, and ground foundation systems must be installed according to the manufacturer’s installation instructions for their respective ground anchors, tie down devices and ground stabilization devices. K. Rock anchors can only be used in solid rock.