Trinity's TRACC web site Photos and Images of TRACC Installation Instructions Figure 1 shows the major components of the TRACC.  The fender panels have been removed from the side of the system for clarity. Unidirectional Installation: Installation of the TRACC and its transitions depends on the traffic pattern and the backup structure at the particular location.  Unidirectional traffic (one side of both) requires no transition.  See Figures 2a dnd 2b.  The backup frame can be attached to any solid structure including a square cast-in-place concrete pillar, a vertical concrete wall, or the end of a New Jersey style barrier.  The backup frame provides a hole pattern that may require adaptation to the backup structure.  Trinity industries can provide an adapter to allow direct attachment of the backup frame to a New Jersey style barrier. Bi-directional Application For installations that face oncoming traffic from the reverse direction (see figure 2c), appropriate transitions should be installed on the end of the backup structure.   Whenever possible, concrete transitions should be used to change profiles from the length of need of the barrier to a vertical wall profile for attachment of the TRACC.   That transition should be accomplished at an angle of no more than 10° with respect to the centerline of the barrier.  Figure 3 shows simple concrete transition on the end of the New Jersey style barrier. In the presence of an approximately transitioned vertical wall, specially constructed guardrail terminations can be attached under the last fender panel to the backup frame and to the vertical wall.  In the absence of a cast concrete transition, Trinity Industries can supply special hardware that will allow the TRACC to transition to a New Jersey style barrier.  Figure 4 shows a fabricated transition that can be attached to the New Jersey style barrier. Once the appropriate transition is in place, locate the TRACC according to the Field Assembly Drawing (SS 450 in Appendix) provided with the system.  Figure 5 shows a foundation plan for the TRACC and can be used to establish the locations of the anchors prior to the arrival of the system.  If the complete system is on location, the base of the system can be used as a template for locating the anchor studs. NOTE:  It is not necessary to disassemble the system to use the base as a template. The front surface of the sled structure should be 21" from the face of the backup structure.  Align the system within 1° of the axis of the downstream barrier.   Also make sure that 60" of clear space exists on both sides of the backup structure for the fender panels to retract during an end-on impact (see figure 6). When located properly, the fender panels and the backup frame should contact the backup structure.  If they do not, make sure the cutter on the bottom of the sled is fully engaged into the 6" deep slots on the first stage of rip plates and then stretch all the slack out of the system by pulling on the backup frame while restraining the sled structure and the base structure. Inventory of System Quantity Product Code Item 1 970A TRACC System (fully assembled galvanized steel structure) 4 4451G 5/8" x 6" Mechanical expansion anchors 31 3310G 5/8" Lockwashers 27 6352G* 5/8" x 7-1/2" All thread rod 27 6380G 5/8" x 18" All thread rod 27 3351G 5/8" Hex nut 27 3300G 5/8" Flat washers 2 4747G** Chemical Grout (quart can) 6 4747G** Chemical Grout (quart can) 8 6324G 1/8" x 1" Bolts 8 6461G 1/8" Flat washers 8 6402G 1/8" Nuts 1 *** Plastic nose delineator   * All thread road included with system depends on type of installation. ** Quantity of Keligrout depends on type of installation. *** See figure 7 for delineator options and product codes (figure 7 not included on this web site).