A park office building has three floors, 2800 in height, 2700 in stairwell, 5400 in depth and 240 in wall thickness, Width b, ladder length 1, floor well width b, platform width D1, D2

A park office building has three floors, 2800 in height, 2700 in stairwell, 5400 in depth and 240 in wall thickness, Width b, ladder length 1, floor well width b, platform width D1, D2

Storey height / number of steps = step height