WO2017061882A1 - Améliorations dans ou se rapportant à des systèmes de support de fondation de bâtiment - Google Patents

Améliorations dans ou se rapportant à des systèmes de support de fondation de bâtiment Download PDF

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Publication number
WO2017061882A1
WO2017061882A1 PCT/NZ2016/050166 NZ2016050166W WO2017061882A1 WO 2017061882 A1 WO2017061882 A1 WO 2017061882A1 NZ 2016050166 W NZ2016050166 W NZ 2016050166W WO 2017061882 A1 WO2017061882 A1 WO 2017061882A1
Authority
WO
WIPO (PCT)
Prior art keywords
building
engaging portion
ground
support
foundation
Prior art date
Application number
PCT/NZ2016/050166
Other languages
English (en)
Inventor
Craig Anthony Burrell
Original Assignee
Smartlift Systems Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smartlift Systems Limited filed Critical Smartlift Systems Limited
Publication of WO2017061882A1 publication Critical patent/WO2017061882A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/34—Foundations for sinking or earthquake territories
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
    • E02D35/005—Lowering or lifting of foundation structures

Definitions

  • the present invention relates to building foundation support systems.
  • the present invention is directed to a building foundation support system to support and level the foundation and building in an elevated position above a ground surface.
  • One such method is to build the building upper structure such that it resists the majority of seismic effects, either by over building or including systems to damp the motion of the upper building.
  • this system still requires the ground on which the building is built is suitable to support, for example a slab foundation directly on the ground. If the ground is damaged or otherwise unsuitable it cannot be built on in this way.
  • One method to allow building on ground which surface is unsuitable is to drive piles into the ground to a depth where there is a stable substructure, or sufficient side friction to support the piles.
  • piles are wooden, steel or concrete.
  • piles cannot isolate the building from subsequent seismic activity and therefore again the building is susceptible to damage, for example in an earthquake.
  • side friction solutions become unsuitable.
  • typical concrete slabs can be costly to build in an elevated form using a piling method to support the slab off the ground. This is because they must be piled and boxed off the ground and then poured and then the boxing removed.
  • the present invention consists in a building foundation support, to support a building from or off a ground, comprising or including,
  • An adjustment element to allow a distance in an elongate direction between the ground engaging portion and the building engaging portion to be adjusted
  • An elastic element at least in part between the ground engaging portion and the ground to allow at least in part relative horizontal movement between the ground engaging portion and the building,
  • At least one support can be used to support the building off the ground, and in the event of a seismic event prevent or reduce transmission of seismic motion to the building.
  • the elastic element is a seismic rubber between part of the ground engaging portion and the ground.
  • the elastic element is frustoconically shaped.
  • the elastic element allows the ground engaging portion to flex horizontally relative the ground and or building.
  • the elastic element has the ground engaging portion passing substantially through its conical centre line.
  • said adjustment element or part thereof is lockable.
  • part of the building the building engaging portion engages is a concrete slab foundation.
  • the building engaging portion has a building base plate to support the building and a location extension therefrom, the building being supported vertically at least in part by the building base plate, and horizontally at least in part by the location extension.
  • the location extension allows access to the adjustment element, at least for adjustment purposes, and thereafter can be closed off, whether selectively or permanently.
  • the adjustment element is at least in part internal of the building engaging portion.
  • the location extension is closed off selectively by a cap when access to the internals is not needed.
  • the ground engaging portion can engage a secondary ground engaging portion.
  • the secondary ground engaging portion is a pile into the ground to a depth that it engages and is supported by the ground.
  • the elastic element is set into the secondary engaging portion at least in part between the ground engaging portion and the secondary engaging portion.
  • the elastic element sits flush with a top of the ground or secondary ground engaging portion.
  • an extension of the building engaging portion telescopes inside an extension of the ground engaging portion or vice versa.
  • the internals of the ground engaging portion are filled or tillable with a medium to displace moisture and prevent corrosion, such as for example, but not limited to oil or similar.
  • At least one guide between an outer surface of the building engaging portion and an inner surface of the ground engaging portion, or vice versa, at least in part where they telescope to aid adjustment in the elongate direction, but reduce movement in a direction lateral to that.
  • the supports are spread between 1 and 6 metre centres.
  • the supports are spread at 3 metre centres.
  • the supports support the foundation at a height between 1000mm and 10mm off the ground.
  • the supports support the foundation at a height of substantially 200mm off the ground.
  • the support or supports are located in the ground, and then the foundation is cast onsite and then raised off the ground for support by the supports.
  • the supports are used, at least in part to raise the foundation off the ground.
  • the adjustment element is an elongate member threadwise engaged between the building engaging portion and the ground engaging portion whose threaded engagement can be adjusted to adjust distance in the elongate direction.
  • a lock to prevent rotation of the elongate member once adjusted.
  • the elongate member is thread wise engaged with a portion of the building engaging member.
  • the elongate member is threadwise engaged with a lower portion of the building engaging portion.
  • an end of the elongate member proximal the building engaging member is accessible internally of the building engaging member to allow for adjustment and locking.
  • the lower end is substantially contained, at least horizontally at the base portion.
  • the building engaging portion and the ground engaging portion can telescope as necessary to account for movement of the ground away from the building.
  • the support can be adjusted as necessary, even after installation, to account for relative movement of the ground to the building.
  • the present invention consists in a method of seismically isolating and supporting a building foundation, comprising or including the steps of,
  • an adjustment element to allow a distance in an elongate direction between the ground engaging portion and the building engaging portion to be adjusted, providing an elastic element to lie at least in part between the ground engaging portion and the ground to allow at least relative horizontal movement between the ground engaging portion and the building,
  • the distance in the elongate direction can be later adjusted should bearing properties of the ground change.
  • the elastic element is a seismic rubber between the ground engaging portion and the ground.
  • part of the building the building engaging portion engages is a concrete slab foundation.
  • the building engaging portion has a building base plate to support the building and a location extension therefrom, the building being supported vertically at least in part by the building base plate, and horizontally at least in part by the location extension.
  • the location extension allows access to the adjustment element, at least for adjustment purposes, and thereafter can be closed off, whether selectively or permanently.
  • the location extension is closed off selectively by a cap.
  • the ground engaging portion can engage a secondary ground engaging portion.
  • the secondary ground engaging portion is a pile into the ground to a depth that it engages and is supported by the ground.
  • an extension of the building engaging portion telescopes inside an extension of the ground engaging portion or vice versa.
  • the foundation is cast on site, over and about the building supports, and then is raised off the ground for support by the supports.
  • the supports are used, at least in part to raise the foundation off the ground.
  • the present invention consists in a method of forming an isolated building foundation to support the foundation off the ground, comprising or including the steps of,
  • the raising is done in stages across the foundation slab.
  • the raising uses at least one prime mover.
  • a release material is located above the ground prior to casting the foundation slab.
  • the foundation slab has a lower concrete (or similar suitable material) portion, and an upper concrete (or similar suitable material) portion and sandwiched between the two is at least a thermal isolation portion and moisture isolation portion.
  • the reinforcing is pre-tensioned.
  • the supports have their ground engaging portions encased in a pier in the ground, with the elastic element at least in part located between the ground engaging portion and the pier.
  • the present invention consists in a building foundation support, to support a building from or off a ground, comprising or including,
  • An adjustment element to allow a distance in an elongate direction between the ground engaging portion and the building engaging portion to be adjusted
  • An elastic element at least in part between the building engaging portion and the building to allow at least relative horizontal movement between the building engaging portion and the building
  • a number of the supports can be used to support the building off the ground, and in the event of a seismic event prevent or reduce transmission of seismic motion to the building.
  • the present invention consists in a method of seismically isolating and supporting a building foundation, comprising or including the steps of,
  • an adjustment element to allow a distance in an elongate direction between the ground engaging portion and the building engaging portion to be adjusted, providing an elastic element to lie at least in part between the building engaging portion and the building to allow at least relative horizontal movement between the building engaging portion and the building,
  • the present invention consists in a building including at least one building foundation support, wherein the building foundation support comprises or includes,
  • An adjustment element to allow a distance in an elongate direction between the ground engaging portion and the building engaging portion to be adjusted
  • An elastic element at least in part between the ground engaging portion and the ground to allow at least in part relative horizontal movement between the ground engaging portion and the building,
  • the at least one building foundation support can be used to support the building off the ground, and in the event of a seismic event prevent or reduce transmission of seismic motion to the building.
  • the present invention consists in a kit of parts for a building support, the kit comprising or including,
  • An adjustment element to allow a distance in an elongate direction between the ground engaging portion and the building engaging portion to be adjusted
  • An elastic element at least in part engagable between the ground engaging portion and the ground, or part thereof, to allow at least in part relative horizontal movement between the ground engaging portion and the building,
  • the support can be used to support the building off the ground, and in the event of a seismic event prevent or reduce transmission of seismic motion to the building.
  • the kit includes a locking pin to removably slide internally into the building engaging portion to selectively lock the adjusting element.
  • the ground engaging portion can engage a secondary ground engaging portion.
  • the kit includes formers to form the secondary ground engaging portion.
  • kit includes preformed reinforcing, at least for the secondary ground engaging member.
  • the formers include a former for the elastic element in the secondary ground engaging portion.
  • the present invention consists in a method of supporting a building foundation, comprising or including the steps of,
  • an adjustment element to allow a distance in an elongate direction between the ground engaging portion and the building engaging portion to be adjusted
  • the building supports located vertically on or in the ground and suspending the building off at, or near, a top of the building engaging portions thereof, d. Adjusting the support as necessary, to account for relative movement of the ground to the building.
  • the present invention may be said to broadly consist in a building foundation support as described herein with reference to any one or more of the accompanying drawings.
  • the present invention may be said to broadly consist in a method of seismically isolating and supporting a building foundation as described herein with reference to any one or more of the accompanying drawings.
  • the present invention may be said to broadly consist in a method of forming an isolated building foundation as described herein with reference to any one or more of the accompanying drawings.
  • the present invention may be said to broadly consist in a building foundation support as described herein with reference to any one or more of the accompanying drawings.
  • the present invention may be said to broadly consist in a kit of parts as described herein with reference to any one or more of the accompanying drawings.
  • Figure 1 Shows an isometric view of preferred embodiment of a support of the present invention
  • Figure 2 Shows a lengthwise cross-section of the support of Figure 1 , its internals, and its location in the ground and elastic element,
  • Figure 3 Shows a foundation of a building supported off the ground by a number of the supports
  • Figure 4 Shows a side view of a series of supports located in place in the ground with secondary ground engaging portions and elastic elements prior to casting of the foundation slab
  • Figure 5 Shows the same view as that of Figure 4, but with the foundation slab cast in place, and the prime movers ready to drive the adjusting element to lift the foundation slab, once cured,
  • Figure 6 Shows the foundation slab, lifted off the ground by the supports, and
  • Figure 7 Shows a perspective view of a foundation slab supported off the ground by a number of the supports of the present invention, in this case the foundation supports a building which is a house.
  • the support 1 has a ground engaging portion 2 and a building engaging portion 3 as shown in Figure 1 .
  • the support 1 is vertically oriented with the ground engaging portion 2 at the bottom or lower end, and the building engaging portion at the top or upper end.
  • the ground engaging portion 2 has an extension 16 which telescopes with an extension 17 of the building engaging portion 3.
  • extension 17 sleeves within the extension 16 as shown in Figure 2.
  • the resulting cavity 46 that is formed can if necessary, be filled with a material, such as oil or similar to prevent ingress of materials, provide lubrication and prevent corrosion. This prevents ingress of water and other debris when in the normal vertical orientation.
  • Present around an internal lower periphery 19 of the extension 16 are a number of guides 18. These allow easy telescoping of the two extensions 16 and 17 which prevent or reduce movement laterally.
  • the ground engaging portion 2 and building engaging portion 3 can be made from any suitable material, and in the preferred form this is steel which once fabricated can be rust proofed, for example by galvanising.
  • the ground engaging portion 3 has a base portion 33 located at a lower end thereof as shown in Figures 1 and 2. This closes off the interior of the extension 16.
  • base portion 33 and extension 16 are formed from steel components that are welded together. However, they may also be formed by other suitable means.
  • the building engaging portion 3 has an upper location extension 13 to engage the foundation 7 laterally and a building base plate 12 to support the foundation 7 vertically.
  • the building base plate 12 may be square as shown in Figure 1 with an aperture there through to locate around the extension 16 and then is welded at the correct height to form the location extension 13 and building base plate 12.
  • building engaging portion 3 and their respective extensions 16 and 17 is an adjusting element 4 as shown in Figure 2.
  • This allows controlled extension and contraction in the direction 20 of the two portions, and therefore allows the distance in the elongate direction 20 to be adjusted and set. As will be explained below this allows setting of the foundation 7 and building 6 at an even height when the ground below is uneven.
  • the adjustment element 4 in the preferred form is achieved by a threaded engagement internally between the two portions 2 and 3 as shown in Figure 2.
  • this is a static threaded nut 22 fixed toward the lower end of the extension 17 of the building engaging portion 3, and an elongate member 21 , as a rod, threadwise engaged to that and extending downwards into the extension 16 of the ground engaging portion 2.
  • a locking plate 23 and driving portion 24 At an upper end as shown there is a locking plate 23 and driving portion 24.
  • the driving portion 24 allows the elongate member 21 to be driven to turn in and out of the threaded nut 22.
  • the locking plate 23 can be used to lock the adjustment element 4 once the adjustment is done. This will be explained below.
  • the lower end 31 of the elongate member 21 bears internally on the base portion 33 of the ground engaging member and this then allows adjustment in direction 20 as shown in Figure 2.
  • a retainer ring 42 on the interior face 47 of the base portion 33 which captures the lower end 31 to prevent horizontal movement, at least when it is being rotated.
  • the elongate member 21 is a high tensile steel material as is the threaded nut.
  • the elongate member has an M30 thread on it. This has been found to be off sufficient diameter and strength. However, this material and dimension may be varied as needed for the application.
  • a locking pin 10 can be placed down through an upper locking sleeve 1 1 A from the top of the building engaging portion 3 as shown in Figure 2.
  • the locking pin 10 engages in a locking aperture 26 in the locking plate 23.
  • the locking pin is shown removed from the support 1 as 10B to allow actuation of the adjustment element 4, and installed as 10A to prevent actuation of the adjusting element 4.
  • Access to the driving portion 24 and locking sleeve 1 1 is through the top of the building engaging portion 3 as shown in Figure 2. Once this access is no longer needed it can be closed off with a cap 14. This cap may be removable if there is a need to readjust the support 1 , for example if there is ground settling.
  • the interface between the ground engaging portion and the ground in the preferred form is by a secondary ground engaging portion 15, such as a pile, pier, or concrete foundation, as shown in Figure 2. In some forms this may be "T" shaped as shown to further stabilise portion 15, for example against toppling when the ground 8 is soft, or prone to softening.
  • the secondary ground engaging portion can be poured on site and preferably has reinforcing 40 as shown. The particular form of the reinforcing will depend on the
  • an elastic element 5 In the preferred form this is a seismic rubber that is cone shaped as shown in Figure 2.
  • the elastic element 5 locates into a complementary cavity 30 in the portion 15 as shown in Figures 2 and 4.
  • the element 5 may either be cast in place or located thereafter. In this way the ground engaging portion can flex laterally and the foundation 8 and building 6 supported above is isolated horizontally and damped by the elastic element 5.
  • the building engaging portion 3 is not secured in the ground engaging portion vertically and therefore should the ground 8 and ground engaging portion 2 drop relative to the building engaging portion 3 then this is accommodated vertically. This enables the support and the building to be compliant relative to vertical movement of the ground.
  • the foundation can be any suitable foundation but in the preferred form is a concrete slab foundation 7, such as shown in Figure 3.
  • the foundation slab 7 is a composite construction and has a lower concrete portion 37, an upper concrete portion 45, and sandwiched in between there is a thermal isolation portion 38 and moisture isolation portion 39.
  • At least the lower concrete portion 37 has pre-tensioned reinforcing 40 to make the resulting foundation stronger and able to cope with being supported by the supports 1 and also to make the resulting foundation 7 lighter.
  • the thermal isolation portion 38 is polystyrene, for example 40mm thick.
  • the moisture isolation portion may be polythene or similar material and run at least part of the way up the internal timber framing 49.
  • the brick seats 43 are shown sitting below top level of the upper concrete portion. However, in the preferred form the brick seats overlap at least partway up the heat of the upper concrete portion 45, and most preferably about 60mm up the upper concrete portion. Preferably there is also a gap of about 40mm between the inner vertical surface of the bricks 44 and the outer vertical surface of the upper concrete portion 45.
  • FIG. 4 through 7 To form such a concrete slab foundation 7 for a building 6 to be supported by the supports 1 is shown in Figures 4 through 7.
  • the preferred form is to form a level area and box 27 this. Holes for the secondary ground engaging portions 15 are then prepared, boxed if necessary and reinforcing 40 located ready for concrete pouring. Supports 1 , or at least the ground engaging portions 2 are located prior to pouring concrete.
  • elastic elements 5 may be located (if pre-formed), or formers located to form cavities 30 for them (if formed on site, for example by pouring liquid rubber that then sets into the elastic element 5.
  • the formers or elastic elements 5 extend between halfway to three quarters of the way down to the base of the ground engaging portion 2, and have a lower cone surface at an angle of between 45 degrees to 60 degrees to the vertical.
  • the elastic elements In the preferred form they extend approximately three quarters of the way down and have a lower cone surface angle of approximately 60 degrees to the vertical. Concrete can then be poured to form the portions 15.
  • the elastic elements may be formed off site and then dropped into place in the piers, or maybe cast by pouring a suitable material into cavities 30 in the pier 15.
  • a release material 36 is then located over the ground 8 and portions 15 within the boxed 27 area.
  • Utilities 41 for example power, water, waste water, telecoms and gas may also now be located. Reinforcing 40 is also located in place ready for tensioning.
  • Utilities 41 may be housed in one or several umbilicals or similar. These can be elastic or otherwise allow for relative movement of the foundation 7 without failing.
  • the lower concrete portion 37 may then be poured with any additional boxing as needed to form the shape shown in Figure 5.
  • the lower concrete portion 37 may be poured and then the moisture isolation portion 39 is located on the poured portion 37 and thermal isolation portion 38 is located on top and then settled into the poured portion 37.
  • Additional boxing 48 may be then be located prior to the upper concrete portion 45 being poured.
  • Reinforcing 40 may then be tensioned as needed.
  • the adjusting elements 5 can be used to drive the supports 1 to lift the foundation 7 off the ground 8.
  • there are one or more prime movers 34 to drive the adjusting elements 4 (for example to turn, via the driving portion 24, the elongate member 21 which in turn will extend it through the threaded nut 22 to extend the supports 1 ) under control of a controller 35 to ensure a smooth lift, to the desired height as shown in Figure 6.
  • Locking pins 10 can then be located in place as earlier described.
  • caps 14 can then be used to close off the building engaging portion 3. Boxing 27, and any additional material not needed, can then also be removed.
  • the building 6 as shown in Figure 7 can then be formed in whole or in part once the foundation is lifted.
  • the slab has brick seats 43 to allow for bricks 44 in the usual style as shown in Figure 3.
  • Timber framing or similar 49 can also be erected as needed.
  • the supports 1 in the preferred form are located at 3m centres under the foundation 7.
  • the foundation is located between 10mm and 1000mm off the ground 8, and most preferably at 200mm off the ground.
  • the caps 14 can be removed, locking pins 10 lifted and the adjusting elements adjusted as described such that the foundation and building are then correctly supported and/or level. The locking pins can then be put back into place and caps reinstalled.
  • a foundation 7 for a building can be formed, and a building 6 built on top.
  • the supports 1 support the building 6 vertically, and if there is a side to side movement due to an earthquake of similar are of sufficient dimension to flex and using the elastic element 5 damp the motion and reduce or prevent damage to the building. Further as the building engaging portion is only held in the ground engaging portion by gravity vertical motion of the foundation 7 relative the ground 8 is allowed to further isolate the building 8 and prevent or reduce damage. Then after the event the foundation 7 and building 8 can be relevelled by adjusting the supports 1 . If any support is damaged then it is also possible to lift the foundation, replace the support 1 or supports and then re-lower the foundation 7.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

Cette invention concerne un support de fondation de bâtiment, pour supporter un bâtiment à partir ou au-dessus d'un sol, y compris des procédés d'utilisation et d'installation. Le support comprend une partie de mise en prise avec le sol, une partie de mise en prise avec le bâtiment, un élément d'ajustement pour permettre l'ajustement d'une distance dans un sens de la longueur entre la partie de mise en prise avec le sol et la partie de mise en prise avec le bâtiment, et un élément élastique au moins en partie entre la partie de mise en prise avec le sol et le sol pour permettre au moins en partie un déplacement horizontal relatif entre la partie de mise en prise avec le sol et le bâtiment. La nature du support permet également un mouvement vertical entre la partie de mise en prise avec le bâtiment et la partie de mise en prise avec le sol. Le support peut être utilisé pour supporter le bâtiment au-dessus du sol, et, en cas d'événement sismique, empêcher ou réduire la transmission d'un mouvement sismique au bâtiment. Le support permet en outre de redresser et de supporter la fondation en cas de modification du support du sol en dessous de la fondation du bâtiment, par exemple une modification de la hauteur du bâtiment.
PCT/NZ2016/050166 2015-10-09 2016-10-10 Améliorations dans ou se rapportant à des systèmes de support de fondation de bâtiment WO2017061882A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10508406B1 (en) * 2016-08-09 2019-12-17 Tella Firma, Llc Systems and methods for installing and stabilizing a pier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09144022A (ja) * 1995-11-17 1997-06-03 Yasushi Tanabe 免震アンカー装置
US20030033760A1 (en) * 2001-08-16 2003-02-20 Rogers Paul K. Foundation support for manufactured homes
JP2003106009A (ja) * 2001-10-02 2003-04-09 Shimizu Corp 免震構造
JP2003176542A (ja) * 2001-12-10 2003-06-24 Toshihiro Hasegawa 杭頭部の減震工法と減震装置
US20120255242A1 (en) * 2009-12-07 2012-10-11 Steven Patton Concentrically Loaded, Adjustable Piering System

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09144022A (ja) * 1995-11-17 1997-06-03 Yasushi Tanabe 免震アンカー装置
US20030033760A1 (en) * 2001-08-16 2003-02-20 Rogers Paul K. Foundation support for manufactured homes
JP2003106009A (ja) * 2001-10-02 2003-04-09 Shimizu Corp 免震構造
JP2003176542A (ja) * 2001-12-10 2003-06-24 Toshihiro Hasegawa 杭頭部の減震工法と減震装置
US20120255242A1 (en) * 2009-12-07 2012-10-11 Steven Patton Concentrically Loaded, Adjustable Piering System

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10508406B1 (en) * 2016-08-09 2019-12-17 Tella Firma, Llc Systems and methods for installing and stabilizing a pier

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