Subcommittees and Current Assignments
Subcommittee A: Recommendations for Further Investigation and Research.
Subcommittee B: Revision of Manual.
Subcommittee 2: Wood Preservatives and Preservative Treatment of Forest Products and Wood Tie Disposals.
D2-1-20 Updating recommended practices for handling, seasoning, conditioning and preserving forest products.
D2-2-20 Researching the upcoming EPA legislation governing the disposal of Borate treated ties.
D2-3-20 Determining ways to identify and classify scrap ties and include in manual.D2-4-20 Investigate the use of X-Ray scanning (or similar technology) of ties in track to identify weaknesses or defects within the interior of the wood not visible by visual inspection on the outside surfaces
D2-5-20 Investigate the use of X-Ray scanning (or similar technology) for tie inspection at treating plants
D2-6-20 Investigate the use of RFID tags for marking ties and storing tie specific information
D2-7-20 Investigate the use of boron rods and compounds for remedial treatment of ties in track
Subcommittee 4: Concrete Ties.
D4-1-20 Researching new concrete technology and potential use for concrete ties.
D4-2-20 Researching tie pads and ballast pads to include in Chapter 30.
D4-3-20 Development of recommendations for post-tensioned ties
D4-4-20 Development of a turnout tie section in Section 4
D4-5-20 Recommendation on prism testing for crack prevention
Subcommittee 5: Fasteners.
D5-1-20 Updating performance requirements for fastening systems on concrete ties
D5-2-20 Creation of performance requirements for fasteners on wood ties (Currently there is a set of tests in the Appendix adopted from Chapter 5, which is unrealistic)
D5-3-20 Reviewing the entire Chapter 30 and cleaning up errors related to fasteners
D5-4-20 Explore what constitutes as ‘fastener’ and what that means with regards to the rest of the Manual
D5-5-20 Investigate ‘categories’ or classification of track types and what that may mean for Chapter 30
D5-6-20 Consider developing a specific ‘fasteners’ section of the Manual (there are other sections/chapters of the Manual with possibly orphaned fastener material (e.g. ‘direct fixation track’, found in Chapter 8 (Concrete Structures and Foundations))
D5-7-20 Investigate Chapter 5 track components and whether they should be included in Chapter 30
D5-8-20 Evaluation of the effectiveness of Section 2, Testing, in the Chapter. Is there value in Section 2 if almost all tests pertain to only concrete ties? Should the Chapter be rearranged accordingly
D5-1-23: Adoption of fastening system components (plates, spikes, etc.) from Committee 5.
Subcommittee 6: Engineered Composite Ties.
D6-1-20 Development of recommended practices and information related to:
a) Characterization of the load environment and performance of composite cross ties in track
b) Design, material properties, handling and general considerations for the performance of engineered composite ties
c) Improved evaluative tests for composite tie systems
Subcommittee 7: Steel Ties – Dormant.
No current assignments