The Deck Professor

Lessons / Layout, quantities and sequence

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Squaring the frame

Square the frame with 3, 4 and 5
House5 ft 1 inOut 5 inSquaring diagonal
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A frame out of square that shows up at the last deck board.

Every number here is a working estimate. Check it with your building authority.Turn JavaScript on to work the lesson. The drawing shows how it starts.

The rule this lesson teaches

Mark 3 along one side and 4 along the other; 5 on the diagonal means a square corner.

Words in this lesson