| 摘要 |
The construction of step members for building a stairway structure is disclosed. All individual step members have a like construction; each comprises a first vertically extending plate-like element provided at one end with a first rolled portion and a second horizontally extending plate-like element provided at one end with a second rolled portion. The first and second rolled portions form openings which are substantially the same, and fastening means are passed through these openings to connect the step members to parallel stringers.
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