What is Considered a Deck
An exterior floor system supported on at least two opposing sides by an adjoining structure and/or posts, piers, or other independent supports.
Requirements for Building a Deck
- Decks must be constructed according to the current codes being enforced by Washtenaw County.
- Decks are required to support a 40 pound live load.
- Materials used for the construction of decks are to be of natural durable or treated lumber.
- Fasteners used in treated material shall be galvanized, plated or other corrosion resistant material.
- Decks elevated 30 inches or more require guards minimum 36 inches above deck surface and nosing of treads in accordance with The State Building Code.
- Three or more risers require graspable handrails.
- Where supported by attachment to an exterior wall, decks shall be positively anchored to the primary structure and designed for both vertical and lateral loads as applicable (bolted).
- Posts/piers must bear on undisturbed soils, posts within 3 to 4 foot of house are in backfill area and must be excavated to undisturbed soils (basement footing depth).
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