TTMA Engineering Committee updates recommended practices

June 1, 2013
Trailer engineers attending the [seated] left to right: Rod Ehrlich, Wabash National Corporation; Andy Tanner, Talbert Manufacturing; Jeff Thompson, Timpte, Inc; George Gauntt, Kentucky Trailer; Dan Giles, Fontaine Trailer Company; Jeff Bennett, Utility Trailer Manufacturing; Jeff Sims, TTMA; and Randy Williams, Stephens Pneumatics. Standing, left to right: Christian Lee, Hyundai Translead; Rick Mullininx, Great Dane Trailers; John Rust, Trail King Industries; Charlie Fetz, Great Dane Trailers; Paul Hronec, Talbert Manufacturing; John Freiler, TTMA; Brett Manahl, Valew Quality Truck Bodies; Scott Hevelone, LBT; Gary Fenton, Stoughton Trailers; John Cannon, The Walker Group / Wabash National; Steve McBride, Wabash National Corporation; Jay Kulyk, Rogers Brothers Corporation; Peter Weis, Polar Tank Trailer, LLC; Jeff Ingels, XL Specialized Trailers; Allen Peacock, Fontaine Trailer Company; and Soon Dung Jung, Hyundai Translead.

The TTMA Engineering Committee approved a series of updated recommended practices and technical bulletins during a meeting held April 25 in Point Clear, Alabama.

The recommended practices are intended to serve as a guide for trailer manufacturers. The primary audience for technical bulletins is those who own and/or operate trailers.

The recommended practices that have been updated include: RP No. 1 – Permissible Load Concentrations for Straight Floor Van Trailers; RP No. 4 – Truck Trailer Landing Gear; RP No. 6 – Trailer Hitches and Connections; RP No. 44 – Air Brake Application & Release Test; and RP No. 65 – Stretch Van Trailers.

Also RP No. 88 – Air Suspension Application Data; RP No. 90 – Side Turn Signal Lamps for Long Trailers; RP No. 100 – Determination of Trailer Length and Width; and RP No. 103 – Trailer Tracking Installation.

The committee also updated the following technical bulletins: TB No. 65 – Wiring Diagram for Truck Trailers; TB No. 77 – Cracked Beam on Platform Trailers; TB No. 87 – Loading Hanging Meat in Meat Rail Trailers; TB No. 95 – Trailer Specification; TB No. 97 – Urethane Foam Flammability and Safety Measures; and TB No. 112 – Exhausting Air from One Air Suspension of a Spread Axle Tandem.

Copies of the new publications are available from the TTMA office in Manassas, Virginia, or by calling (703) 549-3010.

The next meeting of the engineering committee will be July 24-25 in Alexandria, Virginia. It will be a joint meeting with federal officials to mutually discuss trailer-related issues.