GREG LARSON
Engineering in Ames, IA
License number
Massachusetts 39356
Issued Date
Jun 27, 1996
Expiration Date
Jun 30, 2014
Type
Civil Engineer
Address
Address
Ames, IA 50010
Organization information
See more information about GREG LARSON at bizstanding.comGreg Larson
3001 Eisenhower Ave, Ames, IA 50010
Industry:
Nonclassifiable Establishments
Professional information
Precast Concrete Panels, Support Pedestals Constructed Therefrom And An Associated Method
US Patent:
5029426, Jul 9, 1991
Filed:
Jul 11, 1990
Appl. No.:
7/550944
Inventors:
Greg A. Larson - Ames IA
Maurice D. Reimers - Des Moines IA
Nelson D. Smith - Fullerton CA
James M. Braden - West Des Moines IA
Maurice D. Reimers - Des Moines IA
Nelson D. Smith - Fullerton CA
James M. Braden - West Des Moines IA
Assignee:
Pitt-Des Moines, Inc. - Des Moines IA
International Classification:
E04B 106
US Classification:
52747
Abstract:
A composite elevated storage tank is constructed utilizing precast concrete panels for a pedestal which supports a steel storage tank. The precast concrete panels are poured in a controlled environment not subject to the difficulties inherent with sitecast concrete construction. A simple and practical method of attaching the panels to each other as well as to the foundation and steel tank ensures the concrete pedestal behaves as a shell to sustain all loads. This method, which uses cast in plates welded together at vertical joints and vertical aligned threaded rods for horizontal joints, serves to reduce the length of time required to construct a composite elevated tank and also reduces the construction costs.
Precast Concrete Panels And Support Pedestals Constructed Therefrom
US Patent:
5131201, Jul 21, 1992
Filed:
Mar 19, 1991
Appl. No.:
7/672038
Inventors:
Greg A. Larson - Ames IA
Maurice D. Reimers - Des Moines IA
Nelson D. Smith - Fullerton CA
James M. Braden - Des Moines IA
Maurice D. Reimers - Des Moines IA
Nelson D. Smith - Fullerton CA
James M. Braden - Des Moines IA
Assignee:
Pitt-Des Moines, Inc. - Des Moines IA
International Classification:
E04B 121
US Classification:
52583
Abstract:
A composite elevated storage tank is constructed utilizing precast concrete panels for a pedestal which supports a steel storage tank. The precast concrete panels are poured in a controlled environment not subject to the difficulties inherent with sitecast concrete construction. A simple and practical method of attaching the panels to each other as well as to the foundation and steel tank ensures the concrete pedestal behaves as a shell to sustain all loads. This method, which uses cast in plates welded together at vertical joints and vertical aligned threaded rods for horizontal joints, serves to reduce the length of time required to construct a composite elevated tank and also reduces the construction costs.
Method Of Mixing A Fluid In A Tank With A Draft Tube Mixing System
US Patent:
8157432, Apr 17, 2012
Filed:
May 26, 2010
Appl. No.:
12/788072
Inventors:
James B. Tysse - Waukee IA, US
Greg A. Larson - Ames IA, US
Donald N. Ruehrwein - Batavia IL, US
Greg A. Larson - Ames IA, US
Donald N. Ruehrwein - Batavia IL, US
Assignee:
Chicago Bridge & Iron Company - Plainfield IL
International Classification:
B01F 5/10
US Classification:
366101, 366136, 3661671, 3661741
Abstract:
A drinking water distribution reservoir has a new draft tube mixing arrangement. An intermediate opening in the draft tube enables water to flow between the central passage of the draft tube and an intermediate portion of the tank. Directional walls can be provided on the intermediate opening to help direct flow, and a check valve can be used to prevent flow from the intermediate section of the tank into the draft tube or prevent flow from the draft tube into the intermediate section of the tank. A venturi portion can also be provided on the draft tube to help draw water from the intermediate portion of the tank into the draft tube.
Liquid Storage Tank With Draft Tube Mixing System
US Patent:
7748891, Jul 6, 2010
Filed:
Feb 27, 2007
Appl. No.:
11/711401
Inventors:
James B. Tysse - Yorkville IL, US
Greg A. Larson - Ames IA, US
Donald Neil Ruehrwein - Batavia IL, US
Greg A. Larson - Ames IA, US
Donald Neil Ruehrwein - Batavia IL, US
Assignee:
Chicago Bridge & Iron Company - Plainfield IL
International Classification:
B01F 5/10
US Classification:
3661741, 3661632, 3661671
Abstract:
A drinking water distribution reservoir has a new draft tube mixing arrangement. An intermediate opening in the draft tube enables water to flow between the central passage of the draft tube and an intermediate portion of the tank. Directional walls can provided on the intermediate opening to help direct flow, and a check valve can be used to prevent flow from the intermediate section of the tank into the draft tube or prevent flow from the draft tube into the intermediate section of the tank. A venturi portion can also be provided on the draft tube to help draw water from the intermediate portion of the tank into the draft tube.