Hello from County Waterford, Ireland.
Sorry for low resolution photos, that's all I have right now. Your site was so very usefull for tips, inspiration and ideas. Being a novice I would not even have known about those 'timberlock' screws. Amazing. Here are my efforts.
I used ten new pine Railway Sleepers, and a couple of scrap pieces of wood and some Timberfix screws. They are brilliant. 10 ton of brown stone chips and I think it was about 2/3 ton of grey limestone chip 12mm. I purchased a new electric chainsaw from Lidls. Brilliant piece of kit for the casual DIY. All the stone layer is about 5/7 inches thick. The grey stone is level with the concrete drive making the narrow drive more user friendly. The brown stone is raised above that by about 4inches. The raised beds were supported by some upright cemented into the ground. The lower raised bed with ornaments has the brown stone chips topped with a sheet of plastic weed control and those white pebble dashing chips.
The Railway Sleepers running up the garden were held in place also by 3 blobs of cement under each one.??I bought a very cheap 'Rock' electric drill. It only just did the job (not very powerful) it only drove the screws in 3/4 of the way and then used a spanner the rest of the way. It was a challenging job in that the garden although small is on a slope. It's nearly a year since it was finished and every part of it is solid as a rock. I am very happy with the result. No grass to cut.! Happy railway sleepering everyone!
Best wishes from Ireland.
RAILWAY SLEEPERS USED
New pine railway sleepers
Thanks so much for the photos. It's wonderful to see how excited you feel about your railway sleeper project and how pleased you are with how things went. Great that you found the timberlok screws so useful.