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Standard drawings for road safety barriers

These NZ Transport Agency standard drawings have been developed in response to particular site constraints to assist designers in achieving safe road safety barrier designs. Most relate to information found in an associated technical memorandum or specification.

Buried-in-backslope terminal (RSB-1) - November 2017

This standard drawing shows details of the accepted buried-in-backslope end terminal treatment as described in technical memorandum TM2004.

Curved guardrail installations (RSB-2 and RSB-2A) - October 2013

These standard drawings show details of the accepted curved rail terminal and curved guardrail treatments for radii ≤25m, as described in technical memorandum TM2008.

M23 terminal grading plan (RSB-3) - February 2012

This standard drawing shows details of the accepted grading profile for guardrail terminals accepted in NZ Transport Agency Specification M23.

Nested guardrail detail (RSB-4) - February 2012

This standard drawing shows details of the accepted nested guardrail configurations for semi-rigid guardrail as described in Technical memorandum TM2003.

TL-4 transition detail (RSB-5) - November 2014

This standard drawing shows details of the accepted W-Beam to rigid barrier transition for use on state highways.

Wire rope safety barrier (WRSB) transitions (RSB-7) - November 2014

These standard drawings show details of the accepted configurations for transitions from wire rope safety barrier (WRSB) to semi-rigid guardrail and rigid safety barrier systems as described in Technical memorandum TM2013.

W-Beam assembly and fixing details (B1, no top rail) - May 2015

This standard drawing (B1) shows details of the accepted TL-3 W-Beam bridge barrier system (without a top rail) for use on local road structures only.

W-Beam assembly and fixing details (B2, With top rail) - May 2015

This standard drawing (B2) shows details of the accepted TL-3 W-Beam bridge barrier system (with a top rail) for use on local road structures only.

Thrie-Beam assembly and fixing details (B3, no top rail) - July 2015

This standard drawing (B3) shows details of the accepted TL-4 Thrie-Beam bridge barrier system (without a top rail) for use on local road and state highway structures (low volume and retro-fit to existing SH structures only).

Thrie-Beam assembly and fixing details (B4, With top rail) - May 2015

This standard drawing (B4) shows details of the accepted TL-4 Thrie-Beam bridge barrier system (with a top rail) for use on local road and state highway structures (low volume and retro-fit to existing SH structures only).

Guardrail holding down details (B5) - September 2014

This standard drawing (B5) shows details of the accepted holding down hardware for the W-Beam and Thrie-Beam bridge barrier systems detailed in drawings B1 thru 4, B6 and B7 for use on local road and state highway structures.

W-Beam intermediate anchor details (B6) - April 2012

This standard drawing (B6) shows details of the accepted intermediate anchor system for use with the TL-3 W-Beam bridge barrier system (refer drawings B1 and B2) for use on local road structures only.

Thrie-Beam intermediate anchor details (B7) - April 2012

This standard drawing (B7) shows details of the accepted intermediate anchor system for use with the TL-4 Thrie-Beam bridge barrier system (refer drawings B3 and B4) for use on local road and state highway structures (low volume and retro-fit to existing SH structures only.

Temporary Concrete Barrier Public Domain Pin and Loop System (TCB-1) - September 2015

This standard drawing (TCB-1) is a metricated variant of the Oregon State Department of Transport (ORDoT) F-shape “Precast Concrete Barrier Pin and Loop Assembly” (RD500).