# US 8,782,979 B2 · Method and arrangement for attaching a tower-like structure to a foundation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,782,979 B2 - Document ID: US8782979B2 - Status: Granted - Kind: B2 - Application number: 13/824,707 - Filed: 2011-09-15 - Published: 2013-08-08 - Granted: 2014-07-22 - Earliest claimed: 2010-09-16 - Assignees: Peikko Group Oy - Applicants: Kari Tuominen - Inventors: Kari Tuominen - Web page: https://patentgrep.com/patent/US8782979B2 ## CPC - E04B 1/41: Connecting devices specially adapted for embedding in concrete or masonry ({joist hangers E04B1/2612; shear dowels E04B1/483;} spacers {other than masonry wall ties} for cavity walls E04B2/30, E04B2/44; connectors for reinforcing elements E04C5/16; fastening frames to the border of openings E06B1/56) - E02D 27/42: Foundations for poles, masts or chimneys {(sockets or holders for poles or masts per se E04H12/22)} - E02D 27/425: {specially adapted for wind motors masts (wind motors per se F03D1/00)} - F03D 13/22: {Foundations specially adapted for wind motors} - F05B 2260/301: Retaining bolts or nuts - Y02E 10/72: Wind turbines with rotation axis in wind direction - Y02E 10/728: Onshore wind turbines - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)} - F03D: WIND MOTORS - F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The invention relates to method and arrangement for attaching a tower-like structure to a foundation. In the invention, a circular element is anchored to the concrete forming the foundation. The circular element is fitted on the surface of the foundation such that the circular element remains partially inside the concrete. The lowest part of the tower-like structure is attached by a screw connection to the circular element. ## Claims ### Claim 1 An attaching method for attaching a tower-like structure to a foundation formed of concrete, a ring-shaped element being anchored to the concrete forming the foundation, the method comprising the steps of: fitting the ring-shaped element on a surface of the concrete of the foundation such that the ring-shaped element remains partially inside the concrete and such that an upper surface of the ring-shaped element remains above the surface of the concrete of the foundation and such that the ring-shaped element is anchored to the foundation with anchoring bolts; and attaching a lowest part of the tower-like structure by a screw connection to the ring-shaped element. ### Claim 2 (depends on 1) The attaching method according to claim 1, further comprising forming the ring-shaped element from several parts. ### Claim 3 (depends on 1) The attaching method according to claim 1, further comprising attaching the lowest part of the tower-like structure to the ring-shaped element by an internal flange connection. ### Claim 4 (depends on 1) The attaching method according to claim 1, further comprising: placing the ring-shaped element to a correct position by turning screws of the screw connection in threaded holes of the ring-shaped element; tightening the screws of the screw connection against the surface of the concrete of the foundation to lift the ring-shaped element from the surface of the concrete of the foundation into the correct position; and soldering the gap between the concrete of the foundation and the ring-shaped element shut when the ring-shaped element is in the correct position. ### Claim 5 An attaching arrangement for attaching a tower-like structure to a foundation formed of concrete, the attaching arrangement comprising a ring-shaped element, which is anchored to the concrete forming the foundation, wherein: the ring-shaped element is located partially inside the concrete of the foundation such that an upper surface of the ring-shaped element remains above a surface of the concrete of the foundation and such that the ring-shaped element is anchored to the foundation with anchoring bolts, and the ring-shaped element is provided with screw connection means for providing a screw connection between a lowest part of the tower-like structure and the ring-shaped element. ### Claim 6 (depends on 5) The attaching arrangement according to claim 5, wherein ring-shaped element is formed from several parts. ### Claim 7 (depends on 5) The attaching arrangement according to claim 5, wherein: the lowest part of the tower-like structure comprises an inner flange, and the screw connection means for providing a screw connection are formed in the inner flange of the lowest part of the tower-like structure. ### Claim 8 (depends on 5) The attaching arrangement according to claim 5, wherein the screw connection means for providing a screw connection comprise threaded holes. ### Claim 9 (depends on 8) The attaching arrangement according to claim 8, wherein: the threaded holes are formed in the ring-shaped element for the screw connection, and the ring-shaped element can be moved into the correct position by turning screws in the threaded holes and tightening the screws against the surface of the concrete. ### Claim 10 (depends on 2) The attaching method according to claim 2, further comprising: placing the ring-shaped element to the correct position by turning the screws in the threaded holes of the ring-shaped element; tightening the screws against the concrete surface to lift the ring-shaped element from the surface of the concrete into the correct position; and soldering the gap between the concrete and the ring-shaped element shut when the ring-shaped element is in the correct position. ### Claim 11 (depends on 3) The attaching method according to claim 3, further comprising: placing the ring-shaped element to the correct position by turning the screws in the threaded holes of the ring-shaped element; tightening the screws against the concrete surface to lift the ring-shaped element from the surface of the concrete into the correct position; and soldering the gap between the concrete and the ring-shaped element shut when the ring-shaped element is in the correct position. ### Claim 12 (depends on 1) The attaching method according to claim 1, further comprising forming the ring-shaped element from one part. ### Claim 13 (depends on 5) The attaching arrangement according to claim 5, wherein the ring-shaped element is formed from one part.