Anchor: #CHDFHFBI

Section 3: Metal and Concrete Railing

Anchor: #i1007267

Traffic Railing Type T1F

Anchor: #DPIJQYNT

Classification

Traffic

Description

9-inch concrete parapet with two aluminum half-ellipse rails centered at 18 inches and 30.75 inches above the roadway surface. The rails are supported by steel posts spaced a maximum of 8 ft. apart.

Approved test criteria and level

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

Nominal height

33 inches

Minimum height after maintenance overlays

31 inches



Type T1F Railing (click in image to see full-size image) Anchor: #i999773grtop

Figure A-4. Type T1F Railing

Anchor: #HPOGBESC

Traffic Railing Type T1P

Anchor: #LSUFGYCI

Classification

Traffic

Description

9-inch concrete parapet with a round steel-top tube, two rectangular steel tubes, and a picket panel mounted on the back side of railing. The rails are supported by twin steel posts spaced a maximum of 8 ft. apart.

Approved test criteria and level

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

Nominal height

36 inches

Minimum height after maintenance overlays

34 inches



Type T1P Railing (click in image to see full-size image) Anchor: #IGPKHXTYgrtop

Figure A-5. Type T1P Railing

Anchor: #i1007292

Traffic Railing Type T1W

Anchor: #MLSRLMRM

Classification

Traffic

Description

9-inch concrete parapet and with two steel rectangular tube rails centered at 19 inches and 31 inches above the roadway surface. The rails are supported by twin steel posts spaced a maximum of 9 ft. apart.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-3. It is derived from the successfully crash-tested Wyoming two-tube TL-3 railing (NCHRP 350).

Nominal height

32 inches

Minimum height after maintenance overlays

30 inches



Type T1W Railing (click in image to see full-size image) Anchor: #i999894grtop

Figure A-6. Type T1W Railing

Anchor: #i1007326

Traffic Railing Type T401

Anchor: #UITUOYIJ

Classification

Traffic

Description

18-inch concrete parapet and a steel ellipse or rectangular HSS 15 inches above the concrete. It has twin steel posts spaced a maximum of 10 ft. apart. It features a bolt anchorage system for the steel rail posts that may be drilled and epoxy-anchored, allowing slip-forming of the concrete parapet. Its parapet is thicker than that of the T4(S) railing, from which its design is derived.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-3.

Nominal height

33 inches

Minimum height after maintenance overlays

31 inches



Type T401 Railing (click in image to see full-size image) Anchor: #DMSBHUGKgrtop

Figure A-7. Type T401 Railing

Anchor: #i1007335

Traffic Railing Type T402

Anchor: #GCWAFBXC

Classification

Traffic

Description

24-inch concrete parapet and a steel ellipse or rectangular HSS 18 inches above the concrete. It has twin steel posts spaced a maximum of 10 ft. apart. It features a bolt anchorage system for the steel rail posts that may be drilled and epoxy-anchored, allowing slip-forming of the concrete parapet. Its parapet is thicker than that of the C4(S) railing, from which its design is derived.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-3.

Nominal height

42 inches

Minimum height after maintenance overlays

40 inches



Type T402 Railing (click in image to see full-size image) Anchor: #JQVPFIWYgrtop

Figure A-8. Type T402 Railing

Anchor: #i1007344

Traffic Railing Type T77

Anchor: #IRCEWTBT

Classification

Traffic

Description

9-inch sloped concrete rail parapet and with two steel ellipses centered at 18 inches and 30 1/2 inches above the roadway surface. The steel ellipses are supported by steel posts spaced a maximum of 8 ft. apart.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-3.

Nominal height

33 inches

Minimum height after maintenance overlays

31 inches

Special notes

Significant restrictions based on bridge geometry on the use of this railing are documented on the T77 standard drawing.



Type T77 Railing (click in image to see full-size image) Anchor: #JRUSQHTGgrtop

Figure A-9. Type T77 Railing

Anchor: #i1007376

Traffic Railing Type T80HT

Anchor: #BAFIXLNS

Classification

Traffic

Description

32-inch-high concrete F-shaped parapet with an elliptical steel or rectangular HSS railing mounted 18 inches above the concrete. Posts are twin steel plates and are spaced a maximum of 8.33 ft. apart.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-5. It is derived from the Type HT railing which was crash-tested in 1984 with an 80,000-lb. semi-truck at 48 mph and at an angle of impact of 15 degrees. The Type HT was approved for TL-5 use after evaluation of results from the 1984 crash testing.

Nominal height

50 inches

Minimum height after maintenance overlays

47 inches

Special notes

Non-standard slab details are required for this railing.



Type T80HT Railing (click in image to see full-size image) Anchor: #i1000482grtop

Figure A-10. Type T80HT Railing

Anchor: #i1007396

Combination Railing Type C1W

Anchor: #USACGXFY

Classification

Combination

Description

9-inch concrete parapet with four steel rectangular tube rails centered at 15.75, 23.5, 31.25 and 41 inches above the sidewalk/roadway surface. The rails are supported by twin steel posts spaced a maximum of 9 ft. apart. The C1W railing is a combination version of the Type T1W railing.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-3.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches



Type C1W Railing (click in image to see full-size image) Anchor: #CHDJHIIAgrtop

Figure A-11. Type C1W Railing

Anchor: #i1063685

Combination Railing Type C221

Anchor: #GLPFGLPH

Classification

Combination

Description

Vertical faced concrete parapet with a single pipe rail mounted 42 inches above the sidewalk/roadway surface. It features a bolt anchorage system for the steel rail posts that may be drilled and epoxy-anchored, allowing slip-forming of the concrete parapet. Its parapet is thicker than that of the C201 railing, from which its design is derived, allowing for optional use of welded wire reinforcement.

Approved test criteria and level

Evaluated and approved for MASH TL-3.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches



Type C221 Railing (click in image to see full-size image) Anchor: #KPAFFHMCgrtop

Figure A-12. Type C221 Railing

Anchor: #i1063884

Combination Railing Type C223

Anchor: #AFICYUES

Classification

Combination

Description

32-inch-high concrete post-and-beam railing with a single pipe rail mounted 42 inches above the sidewalk/roadway surface. It features a bolt anchorage system for the steel rail posts that may be drilled and epoxy-anchored, allowing slip-forming of the concrete parapet.

Approved test criteria and level

Evaluated and approved for MASH TL-3.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches



Type C223 Railing (click in image to see full-size image) Anchor: #FOXCXYQUgrtop

Figure A-13. Type C223 Railing

Anchor: #i1064227

Combination Railing Type C402

Anchor: #JJCYELRS

Classification

Combination

Description

24-inch concrete parapet and a steel ellipse or rectangular HSS 18 inches above the concrete. It also includes a 2-inch pedestrian pipe rail between the parapet and the top rail to be used on the sidewalk side of the railing. It has twin steel posts spaced a maximum of 10 ft. apart. It features a bolt anchorage system for the steel rail posts that may be drilled and epoxy-anchored, allowing slip-forming of the concrete parapet. Its parapet is thicker than that of the C4(S) railing, from which its design is derived.

Approved test criteria and level

Evaluated and approved for NCHRP 350 TL-3.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches



Type C402 Railing (click in image to see full-size image) Anchor: #XMPCFMOCgrtop

Figure A-14. Type C402 Railing

Anchor: #JJGHFYVQ

Combination Railing Type C66

Anchor: #BDISJMYI

Classification

Combination

Description

32-inch-high concrete post-and-beam railing with a single pipe rail mounted 42 inches above the sidewalk/roadway surface. 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 cannot be used for bridges with speeds over 45 mph.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches



Type C66 Railing (click in image to see full-size image) Anchor: #LETSUPMCgrtop

Figure A-15. Type C66 Railing

Anchor: #i1064331

Pedestrian Railing Type PR2

Anchor: #QOOHWRGH

Classification

Pedestrian

Description

Four pipe rails, with 3.5-inch HSS steel pipe for the top rail and 2.375-inch HSS steel pipe for the lower rails, on a 13-inch concrete parapet. Its steel posts are spaced a maximum of 10 ft. apart.

Approved test criteria and level

The PR2 railing is designed for pedestrian loads only. It has not been crash-tested, and it is not intended for exposure to traffic. If this railing is used on a bridge or culvert, it must be protected from vehicular impact by an approved bridge rail type.

Nominal height

42 inches

Minimum height after maintenance overlays

42 inches



Type PR2 Railing (click in image to see full-size image) Anchor: #DFFVVERTgrtop

Figure A-16. Type PR2 Railing

Anchor: #i1064493

Pedestrian Railing Type PR3

Anchor: #NXGKHJJT

Classification

Pedestrian

Description

2-ft-wide concrete posts spaced a maximum of 12 ft apart. Between the concrete posts there are two steel pipe rails centered 42 inches and 13.5 inches from the sidewalk surface with vertical steel pickets connected to the steel pipe rails. A 6-inch-tall concrete curb is placed between the concrete posts.

Approved test criteria and level

The PR3 railing is designed for pedestrian loads only. It has not been crash-tested, and it is not intended for exposure to traffic. If this railing is used on a bridge or culvert, it must be protected from vehicular impact by an approved bridge rail type.

Nominal height

43.75 inches

Minimum height after maintenance overlays

42 inches

Special notes

The PR3-HD is to be used with this railing when an ADA-compliant handrail is needed.



Type PR3 Railing (click in image to see full-size image) Anchor: #UHBAXGGNgrtop

Figure A-17. Type PR3 Railing


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