Here's a photo of my last railway sleeper project. A simple raised herb bed using 3 of your 1.2m Jarrah railway sleepers and 8 timberlok screws. I used rope to shift it into position, as it weighs 150 kgs!
Jason Hopkin.
RAILWAY SLEEPERS USED:
Jarrah & Tropical hardwood railway sleepers G1-2
1200mm x 300mm x 125mm