13 steps: anchoring cement toppers over landscape timbers
When we moved in, the "steps" up from the driveway to the front porch were each a single 4' 6" x 6" landscape timber (separated by landscape stones and mulch over clay soil). We paired another timber side by side level with each existing timber, to provide 11 1/2" to step on, drilled a hole at each end, hammered in 18" rebar into the clay, to secure. Looked unfinished, so we added (3)16x16 cement toppers over each pair of timbers(with gravel to level under the back 5 inches).
Used Liquid Nail(Commercial)to attach. Looked good, worked fine in summer and fall. Came loose in winter. When stepped on, the toppers now move slightly, and might throw someone.
WHAT TO USE TO REATTACH??
Or is there something like rebar with a T or L at the top, that could be snugged in around the steps to confine the toppers?
I asked many people, so far no one has an answer. Winter is around the corner. HELP!