EHCI Learning & Certification

Deck planning: distinguish surface boards from structure

Organize a deck review around loads, connections, drainage and jurisdiction-specific requirements.

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Applications · Version 1 · Published September 18, 2026 · AI-assisted educational synthesis; not an independently validated standard.

Learning outcome

Recognize which design decisions require code confirmation, product data or engineering.

Understand the limits of a prescriptive guide

A residential deck guide only applies within its stated geometry, loads, species and construction limits. The AWC DCA 6 reference linked below is based on the 2015 IRC; your jurisdiction may use a different edition or amendments. Tropical hardwood decking does not make a framing table valid for tropical hardwood beams or joists. Commercial, marine and unusual load conditions need separate evaluation.

Trace the load path

Review how loads travel from boards through joists, beams, posts and foundations, including lateral resistance. Pay particular attention to ledger attachment, flashing, guards, stairs and connections. Spans, fastening schedules and footing sizes must come from applicable design documentation, not a generic rule of thumb. Obtain permits and qualified design input as required before ordering or constructing.

Plan for water and inspection

Coordinate ventilation, drainage, ground clearance, movement gaps and finish access with the specified system. Keep drainage routes from becoming debris traps. Record concealed connection details before they are covered, and organize inspection hold points. A complete handover includes the actual materials, approved drawings, maintenance instructions and unresolved items, not only finished photographs.

Sources & scope

These references support the underlying principles; they do not approve a specific project or endorse EHCI.