Known in the trades as Concrete Masonry Units, there’s such a wide variety of shapes and sizes that it boggles the brain. I’ll show you a few different sets of steps that are comfortable for climbing and descending (safety first, always) and I expect them to be durable as well. I have about a 32” difference in elevation from front to rear on the plot where I built the shop/carport last year and I chose to build a retaining wall rather than have a huge sloping hill gobbling up real estate. This, of course mandated steps to transition the difference in elevation. The two large sets are at the rear corners of the plot, while the short and simple set are near the front of the building. These were all made using readily available cmus from the big orange retail giant. The blue one near my home did not carry 12×16x8 inch blocks. The different blocks used were 4×8x16 solids, 4×8x2-1/4 (brick size), 12×16x8, and 12×12 x 2” stepping stones. The small set has mortar “bagged in” for a more finished look. Also do not apply sealer – it will make wet steps slippery!
-- Like Guy Clark sez - "Sometimes I use my head, Sometimes I get a bigger hammer"