Deck Designer

192 sq ft · attached

Project

Dimensions

Width

Depth

Height above grade

Angle of grade — 0 °

Decking material

Trex Transcend color

Surface & finishes

Board direction

Picture frame border

Wrap rim with fascia board

Stairs

Add stairs to grade

Railings

Add guardrail to open edges

Framing

Attachment

Rim cantilever (joist overhang)

Joists overhang the outer beam by this much. DCA-6 limits the overhang to ¼ of the backspan; the slider maxes out at the allowed 2.4 ft.

Joist sizeSpacing (OC)

Trex Transcend allows joists up to 16" OC (16" perpendicular, 12" diagonal).

Framing speciesPost size

Soil bearing capacityFooting type

Framing plan

Joists2x8 @ 16" OC, span 11 ft

Beam(2) 2x12

Posts3 × 6x6 @ 8.0 ft

Rim cantilever1 ft overhang

Footings3 × Poured concrete pier

Footing size16" sq (≈18" round)

Ledger1/2" lag screw @ 15" OC

Knee bracingNot required

Connectors & hardware

Joist hangers13

Hurricane ties13

Post-beam caps3

Post bases3

Ledger fasteners14

✓ 2x8 @ 16" OC spans 11 ft (limit 11.8 ft).

• Deck surface is over 30" above grade — a guardrail is code-required. Enable railings.

Framing is sized from AWC DCA-6 prescriptive tables (40 psf live + 10 psf dead, No. 2 grade) as a planning aid only. Verify all members, connections, and footings against your locally adopted building code and inspector before building.

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