I'm trying to plan out a free-standing deck in an irregular-shaped garden. It currently has railway sleepers marking a garden bed around the west, north and east edges and the missus would like to keep them there. The deck will sit just below the height of the bed. I've done a sketchup model to help me figure out materials and make sure it's properly supported.
Looking at joists from B&Q: http://www.diy.com/rooms/softwood-deck-joist-l2400mm-pack-of-3/666416_BQ.prd I've allowed for a 400mm gap between centres and planned out 7 modules. There are 2 'holes' in the frame to allow for existing trees. I'd appreciate 2 bits of advice please:
- Does the layout look ok, i.e. anything obviously silly about it??
- Where should I be placing concrete supports? (edit - the current garden has grass laid on it)
Many thanks in advance