NTA Typical Construction Details

The NTA has prepared a suite of Typical Construction Details (TCDs) for use on NTA funded capital infrastructure projects. The TCDs have been prepared to assist designers, contractors and road authorities in the design, specification and construction of capital projects. It remains the responsibility of designers, contractors and road authorities to choose appropriate construction details (including TII standard construction details or bespoke details as appropriate) for any given project based on site specific circumstances, and to ensure the overall safety, durability and efficiency of all works.

Aims of the Typical Construction Details

The TCDs aim to promote more uniform approaches to the design and construction of some common built elements including footways, kerbs, cycle facilities and drainage systems, and their use may bring a number of benefits for projects including:

helping to ensure compliance with relevant standards and guidance;
enhanced consistency and quality of project delivery;
improving efficiency by reducing design and construction costs and speeding up design reviews and approvals; and
reducing the risk of errors arising from inappropriate approaches.

A live set of documents

It is intended that the TCDs will be a live set of documents, that will be updated periodically as required. New TCDs will also be produced and published on the NTA website over time. Therefore, professionals should always consult the NTA website for the latest version of the TCDs prior to incorporation into scheme designs.

Note that the TCDs are not a substitute for professional judgment and they do not negate the need for compliance with legal obligations, contractual requirements, or site-specific risk assessments and the NTA does not assume any liability to any party though issuance of these guidance documents.

Further queries

For queries on the TCDs, please contact: TechnicalStandards@nationaltransport.ie

Suite of NTA Typical Construction Details documents

The NTA has prepared a suite of Typical Construction Details (TCDs) for use on NTA funded capital infrastructure projects.

Those listed in this section are for Series 500: Drainage and Ducts

NTA-TCD-500-001 Active Travel Gully Gratings
NTA-TCD-500-002 Linear Drainage Systems
NTA-TCD-500-003 Combined Kerb and Drainage System
NTA-TCD-500-004 Gully relocation (Rapid Build Cycle Track)
NTA-TCD-500-005 Typical details for traffic signal Chambers
NTA-TCD-500-006 Typical details for traffic signal ducting
NTA-TCD-500-007 Ducting Arrangement (Protected Junction)
NTA-TCD-500-008 Ducting Arrangement (Protected Junction – CYCLOPS Layout)
NTA-TCD-500-009 Ducting Arrangement (Protected Junction – Full Signal Control)
NTA-TCD-500-010 Ducting Arrangement (Signalised Pedestrian Crossing – Mid-block)
NTA-TCD-500-011 Ducting Arrangement (Parallel Zebra Crossing)
NTA-TCD-500-012 Ducting Arrangement (Combined Zebra Crossing)
NTA-TCD-500-013 Ducting Arrangement (Signalised Parallel Crossing)
NTA-TCD-500-014 Ducting Arrangement (Toucan Crossing)
NTA-TCD-500-015 Ducting arrangement (Signalised cycle crossing)

NTA-TCD-500-001

File type: PDF
File size: - 426 KB

NTA-TCD-500-002

File type: PDF
File size: - 383 KB

NTA-TCD-500-003

File type: PDF
File size: - 603 KB

NTA-TCD-500-004-01

File type: PDF
File size: - 265 KB

NTA-TCD-500-005-01

File type: PDF
File size: - 317 KB

NTA-TCD-500-006-01

File type: PDF
File size: - 304 KB

NTA-TCD-500-007-01

File type: PDF
File size: - 1 MB

NTA-TCD-500-008-01

File type: PDF
File size: - 1 MB

NTA-TCD-500-009-01

File type: PDF
File size: - 946 KB

NTA-TCD-500-010-01

File type: PDF
File size: - 335 KB

NTA-TCD-500-011

File type: PDF
File size: - 491 KB

NTA-TCD-500-012-01

File type: PDF
File size: - 413 KB

NTA-TCD-500-013

File type: PDF
File size: - 736 KB

NTA-TCD-500-014-01

File type: PDF
File size: - 514 KB

NTA-TCD-500-015

File type: PDF
File size: - 764 KB

The NTA has prepared a suite of Typical Construction Details (TCDs) for use on NTA funded capital infrastructure projects.

Those listed in this section are for Series NTA-700: Pavement

NTA-TCD-700-001 Standard Cycle Track Pavement
NTA-TCD-700-002 Stepped Cycle Track Pavement
NTA-TCD-700-003 Protected Cycle Lane Pavement
NTA-TCD-700-004 Pavements for Shared Greenways and Active Travel Facilities
NTA-TCD-700-005 Raised Pedestrian Crossing (Flexible Pavement)
NTA-TCD-700-006 Raised Pedestrian Crossing – Sinusoidal (Flexible Pavement)
NTA-TCD-700-007 Side Road Entry Ramp (Flexible Pavement)
NTA-TCD-700-008 Speed Cushion (Flexible Pavement)
NTA-TCD-700-009 Speed Ramp – Flat Top (Flexible Pavement)
NTA-TCD-700-010 Speed Ramp – Round Top (Flexible Pavement)
NTA-TCD-700-011 Central raised strip on Mixed Traffic Routes (imprinted Asphalt)
NTA-TCD-700-012 Central raised strip on Mixed Traffic Routes (Block Paving / Stone Sets)
NTA-TCD-700-013 Corner Overrun Area
NTA-TCD-700-014 Carriageway Widening & Narrowing Detail
NTA-TCD-700-015 Ironwork Mastic Surround