TTMA updates publications

In the ongoing effort to make members' products—and the nation's roadways—safer, and improve design and manufacturing standards, the Truck Trailer Manufacturers Association’s Engineering Committee has released the following new publication:

• TB 135 - Valve Seat Tightness Check for Pre-Load Verification of Chemical Cargo Tanks for Shippers or Carriers

The following publications have been updated:

• RP 21 - Tank Vehicles in Hot Products Service
• RP 33 - Clean-Out Nipples on Tank Trailers
• RP 67 - Rating of Platform Trailer Floors for Lift
• RP 78 - Design of Circumferential Reinforcing Members on Carbon Steel Cargo Tanks Where Internal Thickness Testing is Precluded by Lining or Product Heel
• RP 98 - Cargo Tank to Truck Chassis Attachment
• TB 74 - End Dump Trailer Operations
• TB 108 - Spread/Steering Axle Specialty Trailers

TTMA publications are available at no cost to members and are available for purchase to non-members in the TTMA online store: https://www.trucktrailer.org/store/.