Anchor: #CHDDCAAD

Section 4: Concrete Railing

Anchor: #i1007514

Traffic Railing Type T221

Anchor: #APMDJOVB

Classification

Traffic

Description

Vertical-faced concrete parapet. This parapet is taller and thicker than the T201 railing, from which its design is derived, allowing optional use of welded wire reinforcement.

Approved test criteria and level

Evaluated and approved for MASH TL-3.

Nominal height

32 inches

Minimum height after maintenance overlays

30 inches



Type T221 Railing (click in image to see full-size image) Anchor: #AANYUWQNgrtop

Figure A-18. Type T221 Railing

Anchor: #QJMCGRID

Traffic Railing Type T221P

Anchor: #WQLHMRCF

Classification

Traffic

Description

A precast version of the T221 vertical-faced concrete parapet.

Approved test criteria and level

Successfully crash-tested and approved for MASH TL-3.

Nominal height

32 inches

Minimum height after maintenance overlays

30 inches



Type T221P Railing (click in image to see full-size image) Anchor: #IOPYDHHXgrtop

Figure A-19. Type T221P Railing

Anchor: #i1007421

Traffic Railing Type T223

Anchor: #GBEGRWYV

Classification

Traffic

Description

Continuous concrete top beam 19 inches high by 15.5 inches wide on 13-inch-high concrete posts that are 4 ft. long and spaced a maximum of 10 ft. apart.

Approved test criteria and level

Evaluated and approved for MASH TL-3.

Nominal height

32 inches

Minimum height after maintenance overlays

30 inches

Special notes

This railing is not recommended for direct connectors or flyovers.



T223 Railing (click in image to see full-size image) Anchor: #i1000744grtop

Figure A-20. T223 Railing

Anchor: #TNHQWRAD

Traffic Railing Type T224

Anchor: #RVUMUNCU

Classification

Traffic

Description

Continuous concrete top beam 21 inches high by 16.5 inches wide, on a 9-inch-high continuous curb and 12-inch-tall concrete posts that are 5 ft. long and spaced a maximum of 10 ft. apart.

Approved test criteria and level

Successfully crash-tested and approved for MASH TL-5.

Nominal height

42 inches

Minimum height after maintenance overlays

40 inches



Type T224 Railing (click in image to see full-size image) Anchor: #LRUPVKEPgrtop

Figure A-21. Type T224 Railing

Anchor: #i1007446

Traffic Railing Type T411

Anchor: #CJCOCBLW

Classification

Traffic

Description

Continuous concrete railing that has 6-inch-wide windows spaced every 18 inches, center to center.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-2.

Nominal height

32 inches

Minimum height after maintenance overlays

30 inches



Type T411 Railing (click in image to see full-size image) Anchor: #GTDAJAWXgrtop

Figure A-22. Type T411 Railing

Anchor: #i1007471

Traffic Railing Type T551

Anchor: #MGDEKVEP

Classification

Traffic

Description

Concrete F-shaped parapet.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-4.

Nominal height

32 inches

Minimum height after maintenance overlays

29 inches



Type T551 Railing (click in image to see full-size image) Anchor: #YBLOQVGRgrtop

Figure A-23. Type T551 Railing

Anchor: #i1066887

Traffic Railing Type T552

Anchor: #OJKSSAQD

Classification

Traffic

Description

Concrete F-shaped parapet with multiple drain slots.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-4.

Nominal height

32 inches

Minimum height after maintenance overlays

29 inches



Type T552 Railing (click in image to see full-size image) Anchor: #JWMMWHYIgrtop

Figure A-24. Type T552 Railing

Anchor: #i1067005

Traffic Railing Type T66

Anchor: #AGCEQHDO

Classification

Traffic

Description

Concrete post-and-beam railing. It has a 9-inch-tall concrete curb with concrete posts spaced at 6.5 feet maximum. The concrete railing is 12 inches deep and 12 inches wide.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-3. It is derived from the successfully crash-tested California Type 80 railing.

Nominal height

32 inches

Minimum height after maintenance overlays

30 inches



Type T66 Railing (click in image to see full-size image) Anchor: #AQBWOLWPgrtop

Figure A-25. Type T66 Railing

Anchor: #i1067153

Traffic Railing Type SSTR

Anchor: #LTQCVPQV

Classification

Traffic

Description

Concrete parapet with a single front slope.

Approved test criteria and level

Successfully crash-tested and approved for MASH TL-4.

Nominal height

36 inches

Minimum height after maintenance overlays

32 inches



Type SSTR Railing (click in image to see full-size image) Anchor: #PLUJYLUSgrtop

Figure A-26. Type SSTR Railing

Anchor: #i1067356

Traffic Railing Type T80SS

Anchor: #LFTRSJSR

Classification

Traffic

Description

Concrete parapet with a single front slope and aesthetic reveals along exterior face.

Approved test criteria and level

Evaluated and approved for MASH TL-5.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches

Special notes

Non-standard slab details are required for this railing.



Type T80SS Railing (click in image to see full-size image) Anchor: #IWPSOMRLgrtop

Figure A-27. Type T80SS Railing

Anchor: #i1067557

Traffic Railing Type C411

Anchor: #YMVRNUIQ

Classification

Combination

Description

Continuous concrete railing that has 6-inch-wide windows spaced every 18 inches, center to center.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-2.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches



Type C411 Railing (click in image to see full-size image) Anchor: #MHVWXKNEgrtop

Figure A-28. Type C411 Railing

Anchor: #i1067691

Traffic Railing Type C412

Anchor: #MLKDMXWB

Classification

Combination

Description

Continuous concrete railing that has 6-inch-wide windows spaced every 18 inches, center to center.

Approved test criteria and level

Successfully crash-tested and approved for NCHRP 350 TL-4.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches



Type C412 Railing (click in image to see full-size image) Anchor: #YPWCYAQXgrtop

Figure A-29. Type C412 Railing

Anchor: #i1067819

Traffic Railing Type T80TT

Anchor: #JGQCFJLE

Classification

Traffic

Description

90-inch-high continuous concrete railing with a 42-inch-tall single-slop base topped with a 48-inch-tall wall and beam.

Approved test criteria and level

Successfully crash-tested and approved for NCHRP 350 TL-6. It is derived from the Type TT railing, which was successfully crash-tested to TL-6 criteria.

Nominal height

90 inches

Minimum height after maintenance overlays

90 inches

Special notes

This railing is not issued as a TxDOT standard railing type. Non-standard slab details are required for this railing.



Type T80TT Railing (click in image to see full-size image) Anchor: #RENNNVFLgrtop

Figure A-30. Type T80TT Railing


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