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BAUMANN RESEARCH AND DEVELOPMENT

BAUMANN ENGINEERING

HANNS U. BAUMANN, S.E.

FREQUENTLY ASKED QUESTIONS

  1. Who is BauTech, Inc.?

  2. What is the BauGrid® Reinforcement System?

  3. Do you have an ICBO approval?

  4. Is BauGrid® a proprietary product?

  5. What is the significance of the "Bau"s?

  6. Have BauGrids® been tested?

  7. Where have BauGrids® been used?

  8. Do you have City of Los Angeles’s Research Approval?

  9. What does ACI say about the BauGrid® system?

  10. Where do you make the BauGrids®?

  11. What kind of manufacturing process is used in making BauGrids®?

  12. What kind of quality control do you have in the manufacturing process?

  13. What is the BauTech Ductility Test?

  14. Is BauTech’s Ductility Test an ASTM standard test?

  15. Who should I contact at BauTech, Inc.?


Who is BauTech, Inc.?

BauTech, Inc. is a California corporation which holds the license to manufacture and sell the BauGrid® Reinforcement Systems.

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What is the BauGrid® Reinforcement System?

The BauGrid® Reinforcement System is the invention of Hanns U. Baumann, S.E. which has been in development since 1987. The generic name for BauGrids® is "Welded Reinforcement Grids (WRG)".

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Do you have an ICBO approval?

Yes. 

ICBO ER-5192: GENERAL APPROVAL

"BauGrid® Reinforcement is used to confine boundary element reinforcement bars in concrete and masonry shearwalls and reinforcement bars in concrete and masonry columns and beams of frames."   Click here for more information. 

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Are BauGrids® a proprietary product?

Yes. The BauGrid® Reinforcement System is protected by U.S., Japanese and European Union patents.

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What is the significance of the "Bau"s?

Upon the advice of BauTech’s patent attorney, a unique trademark name for each of BauTech’s proprietary products was conceived. In German, the "Bau" means "to build," as in Baumann which means " man who builds".

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Have BauGrids® been tested?

Yes.   The development and testing of the BauGrid® system has been ongoing since 1987 when testing began at UC Irvine by Professor Robin Shepherd.  The BauGrid® system has been used as transverse reinforcement in concrete shearwalls up to 17 stories in height after first being tested at the Earthquake Engineering Research Institute (EERI) by Prof. Vitelmo Bertero.

The BauGrid® system is being tested at UC San Diego in a five-story structure, under the direction of Prof. M. J. Nigel Priestley. Testing at the University of Washington under Prof. John Stanton will determine its use in a $180 million, 39 story San Francisco apartment structure presently under design by Robert Englekirk, S.E. for Pankow Builders.

In all of the testing to date, the BauGrid® system has been shown to give superior structural performance compared to structural members reinforced with conventional transverse reinforcement.

At the University of Ottawa, Prof. Murat Saatcioglu’s research has shown that the BauGrid® system appears to improve performance by confining the concrete in each individual cell. Excellent ductile performance of concrete columns having just four longitudinal (corner) bars confined by 9-cell BauGrids® opens the possibility of even greater reduction of congestion in joints of ductile concrete members reinforced with BauGrids®. His research has also shown that high strength BauGrid® transverse reinforcement in high performance concrete (15,000 psi) members reduces congestion while providing excellent ductile performance.

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Where have BauGrids® been used?

In Los Angeles, San Francisco, New York,  Long Beach, Portland, and Kauai.

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Do you have City of Los Angeles’s Research Approval?

Yes.

CITY OF LOS ANGELES RR-25438: GENERAL APPROVAL

"BauGrid® Reinforcement for concrete ties, stirrups, hoops, shear wall boundary element, and masonry ties and stirrups."  Click here for more information. 

 

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What does ACI say about the BauGrid® system?

Recently ACI 439 Reinforcing Steel Committee has formed a subcommittee ACI 439G-Welded Reinforcement Grids chaired by Hanns U. Baumann, S.E..

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Where do you make the BauGrids®?

In your local area through BauTech's manufacturing licensees.

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What kind of manufacturing process is used in making BauGrids®?

Automatic resistance welding.

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What kind of quality control do you have in the manufacturing process?

A strict quality assurance program is in place in compliance with ICBO and ASTM quality control manuals.

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What is the BauTech Ductility Test?

The ductility test measures the ductility of the BauGrid®. A minimum of 4% elongation measured across the diagonal dimension is required to pass the test.

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Is the BauTech Ductility Test an ASTM standard test?

Yes. It will be included in the pending ASTM standard for Welded Reinforcement Grids.

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Who should I contact at BauTech, Inc.

Ms. Andrea Ding or Mr. Hanns U. Baumann  at (949) 361-0888.  Send emails to andrea@BauTech.com or Hanns@BauTech.com 

 

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Revised: 04/15/04.
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