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How to build low-level decking over concrete slab?

Sujoy
Growing in Experience

How to build low-level decking over concrete slab?

Decking diagram.png

 

Hi All, 

Newbie here and started doing small DIY stuff like making merbau planter boxes :). Now I am planning to start my decking and found this forum extremely helpful gaining the basic knowledge about decking, especially guidance from @MitchellMc in similarly low level decking threads. Here is my project details (please refer the photo attached -

  • Total area - 6.3mx4m 
  • Clearence at Point#A:140mm, house slab sloping towards Point#B:150mm and then concrete apron sloping another 40mm, so total clearance at C is 190mm. 
  • Joists will be as shown in the photo and bearers just connecting end of the joists at A and C. 
  • Will attach the bearer to brick wall A with 10mm gap (using shims) and planning to joist hanger and L-brackets to hold the joists. 
  • Have granite pebbles in D, planning to use pavers + EcoDeck Bigfoot in that area to hold the joists. 
  • Will be using 90x45mm H3 pine for bearer and joists and 140x19mm merbau, so total height for joist + merbau is 109mm. 

Questions: 

1. Ground clearance in A is 31mm (140 - 109), B is 41mm (150-109) and C is 81mm (190-109). Based on this, is L-bracket a good option? If yes which L-bracket should I choose? 

2. With L-backets, I probably have to use shims underneath the joists, isn't 81mm too high for using shims? what are the other options I got? Looking for options other than EcoDek foot (planning only to use it in the pebbles area D). 

3. Need help with detail specs of dynabolts, L-brackets etc. suitable for the above project. 

 

Many thanks :). 

Dave-1
Community Megastar

Re: Low level decking over concrete slab

Afternoon @Sujoy 

:laugh: Very nice indeed! Can see that smile on your face!

It looks great and I love the colouring! 

 

Are you tempted to put the whole job into a Project? I would be :smile: Def something to be proud of! 

From the skills you started with to now :smile: Oh yeah!!!

 

Dave

Sujoy
Growing in Experience

Re: Low level decking over concrete slab

Sure Dave, will do. Thanks 😊

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