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Angled Deck Framing Anchors

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What are Angled Deck Framing Anchors?

Angled deck framing anchors (also called framing angles or angle brackets) are compact connectors used to tie joists, studs, and rafters to perpendicular members or blocking. Their pre-punched holes enable fast, consistent installation and create reliable load paths for lateral and uplift forces—ideal for decks, docks, and outdoor structures.

Why use Stainless 316 Angles on Decks & Docks?

  • Corrosion resistance: 316 stainless excels in marine/coastal or chemically aggressive environments.
  • Best-practice material: Deck guidance favors corrosion-resistant connectors; stainless is the premium choice for severe exposure.
  • Versatile ties: Angles handle joist-to-beam, rim-to-joist, blocking, and corner reinforcement where hangers or straps won’t fit.
  • Fast installs: Pre-punched patterns accept nails or structural screws; small footprints make retrofits easy.

When should I choose an Angle vs. a Joist Hanger?

Use a joist hanger for the primary vertical support at a joist seat. Choose an angled framing anchor for secondary reinforcement, corners, blocking, or when you need a compact connector to resist lateral or uplift forces or to tie members that don’t align for a hanger.

Key Features to Look For

  • Adjustable bend options: Some angle models are field-bendable and can be set to the required angle (check the specific model’s allowable bend range).
  • 316 stainless steel: The top choice for coastal, splash, and high-exposure conditions.
  • Pre-punched fastening: Hole patterns sized for stainless nails or structural screws—use the listed quantity for full capacity.
  • Clear install guidance: Follow the product’s nail/screw schedule and any one-time bend limitations.

Selection Tips

  • Environment: Choose 316 stainless for coastal/marine, pool, de-icing salts, or treated-wood exposure; galvanized may suit mild, inland conditions.
  • Connection type: Pick symmetric angles for general blocking; use bendable models where custom angles are needed.
  • Fasteners: Match material to connector (stainless connector → stainless fasteners). Install the full, specified count.

Common Uses on Decks & Docks

  • Rim-joist to joist ties and blocking reinforcement
  • Corner framing at stair landings and guard posts (as part of an engineered connection)
  • Stud/ledger blocking where hangers cannot be installed
  • Uplift and lateral restraint in addition to primary hangers or straps

Manufacturer Part Number Simpson Part Number Steel Gauge Material
MP34-SS A34SS 18 316 Stainless Steel
MPA1-SS A35SS 18 316 Stainless Steel
MP5-SS LS50SS 18 316 Stainless Steel

Angled Deck Framing Anchors — FAQ

Are angled framing anchors code compliant for deck work?

Yes, when installed per the manufacturer’s instructions with the specified fasteners. Corrosion-resistant connectors are recommended for exterior decks, and stainless is preferred in harsh or coastal conditions.

Should I use 304 or 316 stainless on a dock or coastal deck?

Choose 316 stainless for the best chloride (salt) resistance near oceans, marinas, and splash zones.

Can I bend the angle on site?

Some angle families are designed to be field-bent to match framing geometry. Always verify the model’s allowable bend range and any one-time bend restrictions.

What fasteners should I use?

Use the listed stainless nails or structural screws for the model you purchase and install the full quantity shown in the schedule. Avoid mixing dissimilar metals.

Are angles a replacement for joist hangers?

No, joist hangers provide primary vertical support. Angled framing anchors are for secondary ties, blocking, corners, and lateral/uplift reinforcement.

Do I need stainless on inland decks?

In normal inland exposure, hot-dip galvanized may be acceptable; stainless remains a smart longevity upgrade or where chemicals and moisture are high.