International Code Council — 2024 International Residential Code — Appendix BF Patio Covers
US model-code provisions for residential patio covers; only applicable where adopted.
2024Evidence-led knowledge base
Sources and standards
Official codes, standards and government technical sources underpinning Pergola Wiki.
Source hierarchy
Tier 1: official regulatory and code material; Tier 2: consensus standards; Tier 3: government or expert implementation material; Tier 4: official technical directories. A tier describes source type—it does not make a document automatically applicable to every project.
Last full source review: 24 July 2026
International Code Council — 2024 International Building Code — Preface and Appendix I context
US model-code context for patio covers and non-residential structures.
2024The Aluminum Association — Aluminum Design Manual 2020
Structural aluminum design reference cited by the International Building Code.
2020The Aluminum Association — Standards and technical publications
Official directory for aluminum standards, alloy data and errata.
Current directoryUSDA Forest Products Laboratory — Wood Handbook — Wood as an Engineering Material
Government technical reference on wood properties, moisture, decay, fasteners and design.
2021American Wood Council — 2024 National Design Specification for Wood Construction
ANSI-approved wood design standard referenced by 2024 US model codes.
2024European Commission Joint Research Centre — Eurocode 1 — Actions on Structures
European framework for actions including self-weight, imposed, snow and wind actions.
Current directoryInternational Organization for Standardization — ISO 12944-2:2017 — Classification of environments
Official abstract for corrosivity categories affecting steel coating selection.
2017U.S. Department of Energy — Energy-efficient windows, doors and skylights
Government guidance on exterior overhangs, sunscreens and solar heat gain.
Current guidanceU.S. Department of Energy — Building envelope and architectural considerations
Government guidance on orientation, daylighting and shading.
Current guidanceAustralian Building Codes Board — NCC 2022 Volume Two — Class 1 and 10 buildings
Australian national construction requirements with state and territory variations.
2022Australian Building Codes Board — NCC explanatory context for an unroofed pergola
A jurisdiction-specific example showing that “pergola” may mean an unroofed structure.
2022UK Planning Portal — Do I need planning permission for a pergola?
England-focused planning guidance; listed buildings and local constraints can change the answer.
Current guidanceAmerican Society of Civil Engineers — ASCE/SEI 7-22 — Minimum Design Loads and Associated Criteria
Official standard hub for US structural actions including wind, snow, rain, seismic and load combinations.
2022 with current supplements and errataAmerican Society of Civil Engineers — ASCE 7 Guides
Official application guides for wind, snow, rain and seismic provisions; guides support but do not replace the standard.
Current directoryUS Federal Emergency Management Agency — FEMA P-55 — Coastal Construction Manual
Residential coastal construction guidance addressing high winds, flooding, erosion, corrosion-sensitive detailing and other hazards.
Government technical manualEuropean Commission Joint Research Centre — Eurocode 9 — Design of aluminium structures
European framework covering resistance, serviceability, durability and fire resistance of structural aluminium.
Official Eurocode directoryEuropean Commission Joint Research Centre — STEP — Structural Timber Education Programme for Eurocode 5
Expert-prepared implementation material for Eurocode 5 timber design, hosted by the European Commission JRC.
2025 directoryNational Research Council Canada — National Building Code of Canada 2020
Canadian national model code; provincial, territorial and municipal adoption must be confirmed for each project.
2020UK Government — Building Regulations Approved Documents collection
Official guidance for England covering structure, fire, moisture, drainage, access, electrical safety and workmanship.
Current collectionInternational Organization for Standardization — ISO 15686-1:2011 — Service life planning
Official abstract establishing a lifecycle framework from briefing and design through maintenance, replacement, reuse and disposal.
2011; confirmed 2020 and under revisionAcadémie française — Dictionnaire de l’Académie française — pergola
Institutional dictionary entry tracing the French term through Italian pergola to Latin pergula, a projecting construction.
9th edition; accessed 2026Library of Congress — Historic American Buildings Survey — Andrew Carnegie Mansion, Pergola
Measured documentation of a stone-and-timber garden pergola used as a shaded viewpoint, outdoor room and transition from house to garden.
Structure circa 1899; HABS documentation