"The defendant avers that these show no apparent defect on any stair, let alone one that would cause a ... typical of auditoriums and are reasonably safe. "There is a non-slip metallic nosing affixed ...

"The defendant avers that these show no apparent defect on any stair, let alone one that ... "There is a non-slip metallic nosing affixed to each step. The nosing is flush with the horizontal ...