Describe project to scale and share specs

I am building a deck and need to sketch out the final stages of the project to scale.  Is there a free, shareable way to do this online?

It looks like the picture below right now.  The plan is to further stabilize the sub-floor and then put self-adhesive roll out roofing material over the top of it.

How do I sketch this out online, complete with a picture, so that it can be shared?
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Doug WaltonDatabase AdministratorCommented:
Lowes has kind of a neat deck designer that will give you a list of materials when you're done.  I've played around with it a bit, it takes a little getting used to, but at least it's free!
Could also use this free online tool
But you will need to register

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Project Management

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