Featured Developer Sponsor • Zero-Token Protection
Deck Calculator — Framing, Decking Boards & Hardware
Calculate complete deck lumber takeoff, 5/4x6 decking boards, 2x8 / 2x10 joists (12" vs 16" OC), dropped beams, sonotube concrete pier footings, and structural ledger fasteners per IRC DCA6 standards.
Deck Dimensions & Structural Specs
Deck Lumber & Hardware Takeoff
Surface Deck Boards
29 Boards
5/4x6 x 20-Ft (incl. 10% waste)
Framing Joists (PT)
16 Joists
2x8 x 12-Ft @ 16" OC
Structural Framing & Fastener Schedule
Ledger Board (Bolted to House):
1 Board (2x8 x 20-Ft)
Support Beam (Double PT 2x10):
2 Boards (2x10 x 20-Ft)
Concrete Pier Footings (Sonotube):
3 Piers (12" Sonotube + 6x6 Posts)
Deck Fasteners / Screws:
~950 Screws (2 × 5-lb boxes)
Deck Framing Plan & Structural Bearings
Framing schematic illustrating bolted house ledger, joist bays, dropped beam cantilever, and 6x6 concrete pier posts.
Frequently Asked Questions
What joist spacing is required for composite decking?
How many decking boards do I need for a 12x20 deck?
How deep should deck footings be poured?
Can I attach a deck ledger board to a house cantilever or brick veneer?
What size bolts should be used to fasten a deck ledger board?
Sponsored Utility
While You're Here
Sponsored Recommendations
Advertisement