I need advice or education about how to attach stair stringers on a sand-set brick landing.
Here's the situation.
I am building a low deck that has a long S curved edge. The entire edge has steps; that is, it looks like a short flight of very wide steps; 26 stringers in all. The deck has two different levels and as a result there are three steps (three rises) on one side and two rises on the other.
The landing is on the lawn (or rather there used to be lawn there
I had to decide on a method for making the landing pad early in the project. Since I did not want to form a 30' long, 2' wide, curved concrete pad, nor pour 26 concrete footings, I opted for a sand-set brick walkway. That might not have been the wisest choice; even making the stepped edge with stringers was possibly not the best way either, but at that point in the project I did not known that much about stairs. That was all guesswork. At least the brick landing looks good.
Now the patio is laid, the deck frame is built, the 26 stringers are cut, and I have to find an answer to the question of how to connect the stringers with the bricks.
Books tell you that you can land stairs on sand-set bricks, but none that I've found shows you how. They always use concrete or gravel as an example.
Books tell you that you may want to notch the bottom of the stringer over a kick-board, but they do not show curved steps, and they do not tell you why you want the kick board.
So, I end-up with the following questions:
. What is the function of a kick board: lateral restraint, load distribution, uplift restraint, or just an easier method of attachment to the pad?
. Can one just attach the stringers to sand-set bricks with metal brackets? Will not the bricks break if I try to drill them to fit masonnery screws?
. If I do need the kick-board, are there other ways to use it; such as as spacers between stringers; providing only rigidity to the whole deal?
. Can I just let the whole stair float over the brick, with no bolting down of any kind?
To make it somewhat clearer, I include a couple of pictures.
The close-up of the stringer shows one other issue with the stringers themselves that has me slightly concerned: the portion remaining below the stair notch (is that the correct term?) is not very big and not all is resting on the bricks. Given that the runners are to be made of the decking material (3/4" Ipe), the stringers are pretty close together; 16" OC at the most distant, so each is lightly loaded, but still... do I need to reinforce them? (take pity of me, don't tell me I have to cut new ones
Any advice or information will be received most gratefully.