San Francisco : Architect and Engineer, Inc · leaf 131
/^ inches high and thewidth of the tread 123^ inches. Only when thearchitect has plenty of space at his disposal canthe height be reduced to 4)^2 or 5 inches. Thisheight makes it very easy to walk up stairs. … STAIRCASE BUILT ON ENGINEERING LINESFirst real improvement in stair design in 500 years In the Archimedean staircase, each step willbe about 3^^ inches high. Thus each leg insteadof having to support the entire weight of the bodyduring an ascent of 6}^2 inches will only have todo so during 3}/^…
Architecture · Building
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