Static structures (e.g. – buildings) – Footing or foundation type – Framework spans footings
Reexamination Certificate
1999-04-22
2001-09-04
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Footing or foundation type
Framework spans footings
C052S294000, C052S126600, C052SDIG001, C248S188100, C248S499000, C248S500000, C248S680000, C248S681000
Reexamination Certificate
active
06282856
ABSTRACT:
FIELD OF THE INVENTION
The present invention generally relates to a stabilizing system for a premanufactured building having support joists extending along the length of the underside of the building and being supported by upright piers. More specifically, the present invention relates to stabilization pads positioned beneath the upright piers having the capability to provide motion resistance to to lateral and longitudinal winds where both portions of the system are attached to a stabilization pad.
DISCUSSION OF RELATED ART
Premanufactured buildings, such as mobile homes, trailers, prefabricated houses, and the like are manufactured at a central manufacturing site, and upon completion the buildings are moved to a location where they are to be permanently located and occupied. Because these buildings are designed to be easily moved from the manufacturing site to the permanent location, they are not originally built on a permanent foundation at the manufacturing site, but on a pair of parallel I-beam joists, and then the manufactured building is transported to and mounted upon piers, such as concrete blocks, pilings or stabilizing jacks, at a site where the building will be used. It is important that the building also be anchored in position on the piers, so as to avoid the building being shifted off of its piers by strong winds or earth tremors. A building inadvertently shifted off of its piers can cause serious damage to the building and also can cause human injury.
Various types of stabilizing devices have been used to stabilize the manufactured buildings, to keep the buildings from moving in response to wind forces and earth movement, such as guy wires, straps or other ties which connect the building to anchors or ground futures. A traditional approach to providing lateral wind protection for manufactured buildings consists of an anchor having a shaft with one or more helical plates at the bottom of the shaft which can be rotated to move into the earth, and cold-rolled steel strapping installed as diagonal ties between the upper exposed portion of the anchor and the lower main frame of the manufactured building. A system of this type is taught in U.S. Pat. No. 3,747,288. In addition, vertical or “over-the-top” ties may be installed in case of single-wide structures.
The vertical support for manufactured buildings usually is provided by piers, such as concrete masonry piers, prefabricated steel piers, or precast concrete jack stands located under the parallel joists of the main frame of the manufactured building, with the vertical supports being spaced longitudinally along the parallel joists at approximately eight feet from one another.
While much attention has been placed on protecting the building from movement due to lateral wind forces, little effort has been placed on protecting the building from movement due to longitudinal wind forces. However, these longitudinal wind forces must be accounted for in order to prevent the building from shifting off the piers during periods of high wind exposure.
Therefore, there is a need to provide a system which protects a manufactured building from horizontal movement along its length relative to the support piers due to longitudinal wind forces.
SUMMARY OF THE INVENTION
The present invention provides an apparatus and method for supporting a manufactured home having at least a pair of support joists for mounting horizontally on a pair of support piers and for supporting the manufactured home above a ground surface. Briefly described, in architecture, the support assembly comprises a pair of upright support piers including an upper end for supporting a support joist and a lower end positioned toward the ground surface. Further included is a support platform positioned beneath the lower end of the support pier and adjacent to the ground. A stabilization pad is positioned adjacent the lower end of the support pier and adjacent the support platform and disposed therebetween. The stabilization pad includes a first end opposing a second end and is configured to apply a clamping force. A lateral compression member extends from the first end of the stabilization pad and a link is anchored toward the second end of the stabilization pad. For stabilization, included is at least one tie strap, where the strap extends upwardly from the link, over the support joist and extends downwardly from the support joist to an anchor member.
REFERENCES:
patent: 3750349 (1973-08-01), Deike
patent: 3802138 (1974-04-01), McCarter
patent: 3830024 (1974-08-01), Warnke
patent: 3845597 (1974-11-01), Foster
patent: 4261149 (1981-04-01), Gustafson
patent: 4417426 (1983-11-01), Meng
patent: 5359821 (1994-11-01), Merriman
patent: 5697191 (1997-12-01), MacKarvich
patent: 5758460 (1998-06-01), MacKarvich
patent: 5784844 (1998-07-01), MacKarvich
patent: 5850718 (1998-12-01), MacKarvich
Manufactured Housing Anchoring Installation Information, Tie Down Engineering Brochure, 4 pages.
Manufactured Housing Institute Memorandum dated Jan. 10, 1995, 1 page.
NISTIR 5664 Recommended Performance-Based Criteris for the Design of Manufactured Home Foundation Systems to Resist Wind and Seismic Loads, 56 pages.
Friedman Carl D.
Syres Christy M.
Thomas Kayden Horstemeyer & Risley
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