The garage I've got with my new house has a 6/7 foot deep inspection pit. It's about 1 meter wide and about 3 meters in length. I don't want it properly filled in and cemented over as it'll be gone forever (and I'll lose potential storage space). What I'd like is to run a battern down each length and then run boards across width ways. The whole thing would need to be able to support some very heavy weight, maybe up to 150kg. What's my best solution? Should I opt for maybe 3*4 batterns then just decking boards? or do I need something stronger?
Cheers,
Cheers,