Deck framing & structure

7 tools · 7 guides · 0 comparisons

Joist and beam spans, footing sizes, stair layout and board takeoffs — the numbers that decide whether the frame holds.

Tools

Maximum joist span by species, size and spacing, straight off the IRC table.

Built-up beam size and post spacing for a given joist span and load.

Boards, linear feet and screw count for a deck of any size and board width.

Gap, board count and where the butt joints land across the joists.

Footing diameter and depth from tributary area, load and soil bearing.

Rise, run, stringer length and tread count for a code-legal flight.

Board feet and price for rough lumber, one piece or a whole cut list.

Every common species and size at 12, 16 and 24 inch centres, with the code reference.

How to pick 2×6 through 2×12 from span, spacing and what sits on top.

12, 16 and 24 inch centres — what each costs you and when the decking decides.

Frost depth, bearing and the inspections that turn on this one number.

Setting out piers with string lines and batter boards, square the first time.

Fastener schedule, flashing order and the detail that rots a house wall.

Butt-joint layout that hides the seams and keeps every joint on a joist.

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