In this post you will find some construction detail of a wood deck, with the specification of materials and dimensions.
Wood deck construction on concrete base
Step 1
Organize the reinforcement of the concrete.

Legend of picture 1
1 – Steel mesh for concrete reinforcement
2 – Compacted soil
Step 2
Fill the space between the steel reinforcement and the compacted soil with a layer of gravel mixed with concrete (cement, sand and water).

Legend of picture 2
3 – Gravel ballast with concrete
Step 3
Create a drain for rainwater at the lower elevation of the surface, and fill the area with lean concrete to finish the concrete base.
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Legend of picture 3
4 – Lean concrete
5 – Plastic drain for water drainage
Step 4
Locate the wooden rafters on the concrete base, parallel to each other at the distance of 40 cm from the axis. The rafters can be either just laid on the ground (for easy removal) or fixed to the concrete.
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Next, fix the wooden deck boards perpendicular to the rafters with screws.
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Legend of picture 4
6 – Wooden rafters
7 – Wooden floor boards
The picture 5 below shows the plan view and cross-section details of the wood deck on a concrete base.

Legend for the deck materials in picture 5
1 – Compacted soil
2 – Steel mesh for concrete reinforcement
3 – Concrete
4 – Wooden rafters
5 – Wooden floor boards
6 – Steel screw
7 – Hole cover
8 – Finishing boards
To read the same text in Portuguese, please click here.