I'm ICPI certified and all that but its been 2 years since I did any steps......I have to install one (yeah I know only one, not two but its due to grade and not by choice) from a walk to a small patio covering under a deck. Well I was a little foggy upstairs so I started referencing my ICPI book to find nothing on steps but only flat areas but I did find this on a quick Yahoo search: http://capbrick.com/celtik_steps.htm I don't recall the company I was with at the time using any pins??.............only and stack and glue basically. Also, the solid concrete block.......thats not just a riser correct? I didn't recall seeing any solid non faced block at the yard. Thanks for any help fellas! Now that 23 tons of base is down with wheelbarrows we can start laying...........long day!