How to build a low-level deck over concrete?

[Halima]

Hi team,

Looking to tackle a DIY deck at my parents backyard.

Some details of the space:

- roughly 24m2 (7mx4m)

- Working area is concrete slabbed. Level is variable in certain parts

- Clearance from the internal space to the concrete slab is around 100mm only

- The planned deckspace is covered with an awning - still yet to decide if I'll work around the 4 posts or work right up to it

My thoughts:

- From what I can understand the internal to slab clearance available would be a ideal for 'low profile' deck 

- I'm thinking of using adjustable pedestal feet that will accept the joist frame directly (no bearers). I saw that there's also pedestal feet that will accept blockers

Questions:

- Are gal nails or framing screws better?

- is there any significant feature advantage with pedestal feet that will accept blocker pieces? does it even matter?

- H3 treated wood is reccommended for above ground/outdoor use but what size timber pieces should I be considering and how far apart are the spacing between joists at their centre? I'm sure there's a best practice/building code to this question I'm not familiar with where to start looking

- How do I know the spacing requirements for the pedestal feet?

- Can anyone improve on what I'm thinking of doing or provide other ideas?

thanks in advance!

[TaraL]

This looks great @Halima! Can I ask what software you used for the drawing?

[Jason]

Hi @TaraL,

Just in case @Halima can't respond, I wanted to refer you to the article What software do you use for drawing plans?

Hope it helps.

Jason

[TaraL]

Thank you @Jason! Do you recognise the image as being from one of platforms mentioned? 

[JacobZ]

Hi @TaraL,

I'm not sure what program @Halima has used, but their drawings look similar to those @Jimmy2 has made with Adobe InDesign in his discussion What timber spans for single layer deck frame?

Hopefully this helps.

Jacob