I've just updated the deck calculator at http://www.blocklayer.com/deckcalculator.aspx

The plan diagrams are now to scale (and proportional) and there are 5 new scaled cross section diagrams for stump, bearer, joist and board placement.
Possible Bearer and Joist join (centre of stump and bearer) points are marked, so you can order timber lengths to optimise wastage. You can add or subtract deck boards to compare possible gaps and if necessary, cut the last board

At the bottom of the page, if you enter cost per lineal metre values for stump, bearer, joist and boards, and select a wastage %, it will calculate individual (bearer, joist etc) and total costs.

There are + and - buttons in each section to increase or decrease spacings (add or subtract stumps, bearers etc) instantly re-calculating, re-drawing all diagrams and updating costs.

So, you can play around with possible spacings (and timber sizes) to see what they will cost.

Any ideas for other calculations for decks, or if anything doesn't look right, please let me know.

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