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NAXSA Engineering Committee
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The purpose of the NAXSA Engineering Guidelines Committee is to study relevant shoring industry engineering issues and standard practices, clarify them and issue NAXSA-approved recommendations


NAXSA Approved Shoring Shield Tab Data Sheet
Shortly after the formation of NAXSA, one of the first projects the NAXSA Engineering Committee took on was to develop a standardized tabulated data sheet for trench shields. Trench shields are manufactured by many different companies throughout the United States and Canada. As required by OSHA Subpart P each manufacturer issues tabulated data for their product. The amount of information, terminology, basis of the data, and notes given on those data sheets varies significantly.  Establishing a standard shield data sheet that provides everyone using it with a clear understanding of the information necessary and how to apply it would provide a baseline for the competent person and the persons reviewing it for conformance to what is installed in the field. The standard data sheet would be posted on the NAXSA website to be used as a minimum standard for teaching and interpretation. The data sheet form would be issued to manufacturers of shoring shields for placement of their address, logo and fill in of the data.

Formation goals were:

  • Must be presented in a clear and concise on one 8 1/2  x 11 sheet
  • Must have a descriptive drawing, tabulated data and notes
  • Must have full acceptance and agreement of all committee members
  • Must have acceptance by all NAXSA member shield manufacturers

The process took over two years with committee conference calls approximately every 3 months.  

The NAXSA Shoring Shield Tab Data Sheet was approved in August 2018.

Engineering Guidelines

Jasper Calcara, Chair
D.H. Charles Engineering, Inc.

Rod Austin
Efficiency Production

Nick Britten
D.H. Charles Engineering, Inc.

Cary Carlson
Gary Carlson Equipment Co.

Josh Chandler
United Rentals

Colin Connor
Sunbelt Rentals, Inc.

Joe Cook
Pro-Tec Equipment

Brian Crandall
Icon Equipment Distributors, Inc.

Tim Dey
Arcosa Shoring Products, Inc.

Braxton Erbe
Sunbelt Rentals, Inc.

Luke Griffis
D.H. Charles Engineering, Inc.

Steve Hanley
Cerda Industries

Mike Hayet
Trench Shoring Company

Megan MacDonald
Efficiency Production

Andy Maynard
Direct Equipment West LTD.

John Meissner
D.H. Charles Engineering, Inc.

Michael Miyano
J.M. Turner Engineering, Inc.

Chris Musser
Trench Plate Rental Company

Gene Nowlan
Sunstate Equipment

Mark Palmatier
D.H. Charles Engineering, Inc.

Dennis Parker

Jarrett Patrie

Ken Slaughter
Trench Shoring Company

Patrick Sweeney
Sunbelt Rentals, Inc.

Joe Turner
National Trench Safety

Hans Vermeulen
J.M. Turner Engineering, Inc.

Joe Zylman
Arcosa Shoring Products, Inc.