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Technical Specifications and Guidance Notes
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The OPW has prepared a number of technical specifications and guidance notes that it makes use of when commissioning work, such as the design of flood relief schemes and the preparation of flood maps. These may be applied as relevant by other authorities where there is an intention to work with the OPW.
Management of Soil and Stone By-Products on Flood Relief Schemes is provided here:
Technical Note ENV02 - Article 27 Management of By Products on FRS 2023
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Interim guidance on carrying out the economic appraisal of flood relief schemes is provided here.
Economic Appraisal of Flood Relief Schemes - Interim Technical Guidance Note - Jan 23
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Guidance on undertaking a multi-criteria analysis for flood risk management is provided here.
TMN for Option Appraisal and MCA - Rev B - September 2018
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Guidance on undertaking Defence Asset Condition Survey, and populating the Defence Asset Database, is provided here:
The specification the OPW applies for engineering spatial data, such as flood mapping data, is provided here.
Engineering Spatial Data Specification Final Rev2.3 - September 2021
All spatial data created for the Project must be produced and submitted according to the specifications documented in this standard.
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The specification the OPW applies for environmental spatial data is provided here.
Environmental Spatial Data Specification Final Rev 3.2 - July 2020
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The specification the OPW applies for use in relation to flood relief project websites is provided here.
The specification the OPW applies for survey, such as river channel surveys for the purpose of hydraulic modelling, is provided here.