Stairs from Alexander, in inches For version in centimetres click here. Criteria rise [6'' to 8''] rise*run [70'' to 75''] rise+run [17'' to 17.5''] 2*rise+run [24'' to 25''] 1. Location: DC Notes: Going down is a bit unstable, but so one moves faster. Going up is good, maybe the rise it too slow. Yet it may be a good trade off when one is tired. rise = 7.5'' -v.s.- [6'' to 8''] run = 9.45'' rise*run = 70.875'' -v.s.- [70'' to 75''] rise+run = 16.95'' -v.s.- [17'' to 17.5''] 2*rise+run = 24.45'' -v.s.- [24'' to 25''] 2. Location: "Fire Exit", DC 2812 Notes: Up - stairs feel too short, tiring. Down - too short. Rise seems ok. rise = 7.1'' -v.s.- [6'' to 8''] run = 9.85'' rise*run = 69.935'' -v.s.- [70'' to 75''] rise+run = 16.95'' -v.s.- [17'' to 17.5''] 2*rise+run = 24.05'' -v.s.- [24'' to 25''] 3. Location: E3 Notes: I don't like the metal protector at the end. Rise may be a bit too much. Still feels best from all tested. rise = 7.1'' -v.s.- [6'' to 8''] run = 11.05'' rise*run = 78.455'' -v.s.- [70'' to 75''] rise+run = 18.15'' -v.s.- [17'' to 17.5''] 2*rise+run = 25.25'' -v.s.- [24'' to 25''] Even and odd number of steps. 4. Location: E3 Notes: Sweet 3 steps, they are ok. rise = 5.9'' -v.s.- [6'' to 8''] run = 11.4'' rise*run = 67.26'' -v.s.- [70'' to 75''] rise+run = 17.3'' -v.s.- [17'' to 17.5''] 2*rise+run = 23.2'' -v.s.- [24'' to 25''] 5. Location: E3 Notes: very good rise = 5.7'' -v.s.- [6'' to 8''] run = 11.6'' rise*run = 66.12'' -v.s.- [70'' to 75''] rise+run = 17.3'' -v.s.- [17'' to 17.5''] 2*rise+run = 23'' -v.s.- [24'' to 25''] 6. Location: MC Notes: great, solid, comfortable rise = 6.9'' -v.s.- [6'' to 8''] run = 10.6'' (and in addition +2.4'' overlap) rise*run = 73.14'' -v.s.- [70'' to 75''] rise+run = 17.5'' -v.s.- [17'' to 17.5''] 2*rise+run = 24.4'' -v.s.- [24'' to 25''] 7. Location: HH Notes: Down - unstable rushed. Up - ok, but slightly lower than the "golden" rise. rise = 5.3'' -v.s.- [6'' to 8''] run = 12.2'' rise*run = 64.66'' -v.s.- [70'' to 75''] rise+run = 17.5'' -v.s.- [17'' to 17.5''] 2*rise+run = 22.8'' -v.s.- [24'' to 25''] 8. Location: HH Notes: Good for my feet. One can stay on a step and look around. rise = 7.9'' -v.s.- [6'' to 8''] run = 11.8'' rise*run = 93.22'' -v.s.- [70'' to 75''] rise+run = 19.7'' -v.s.- [17'' to 17.5''] 2*rise+run = 27.6'' -v.s.- [24'' to 25''] Reference: I wanted to clarify the task for the week: you should find at least two sets of stairs, one "standard" and one "non-standard", measure them, photograph them, and walk up and down them, and report a qualitative feel. You should send me a pdf or url of your results. Preferrably, include rise*run, rise+run, and 2*rise+run, although we can compute those in class. You should also select a paper to present and a date on which to present it. We now have one presenter for each day of class; when additional people sign up, they can choose any day that has only one presenter. For the building of the week, I only need a date at this point, I don't need a building. And all I really need is someone to volunteer for this week (and I think someone volunteered at the end of class last week). I would prefer to have someone other than the presenters for the week to do the building of the week. (If we have more students than weeks, then we'll have two buildings some weeks.) Steve University of Waterloo Map http://www.uwaterloo.ca/map/index.php

Stairs from Alexander, in centimetres For version in inches click here. Criteria rise [15 to 20 cm] rise* run [437.5 to 468.75 cm^2] [42.5 to 43.75 cm] [60 to 62.5 cm] 1. Location: DC Notes: Going down is a bit unstable, but so one moves faster. Going up is good, maybe the rise it too slow. Yet it may be a good trade off when one is tired. rise = 19 cm -v.s.- [15 to 20 cm] run = 24 cm rise*run = 456 cm^2 -v.s.- [437.5 to 468.75 cm^2] rise+run = 43 cm -v.s.- [42.5 to 43.75 cm] 2*rise+run = 62 cm -v.s.- [60 to 62.5 cm] 2. Location: "Fire Exit", DC 2812 Notes: Up - stairs feel too short, tiring. Down - too short. Rise seems ok. rise = 18 cm -v.s.- [15 to 20 cm] run = 25 cm rise*run = 450 cm^2 -v.s.- [437.5 to 468.75 cm^2] rise+run = 43 cm -v.s.- [42.5 to 43.75 cm] 2*rise+run = 61 cm -v.s.- [60 to 62.5 cm] 3. Location: E3 Notes: I don't like the metal protector at the end. Rise may be a bit too much. Still feels best from all tested. rise = 18 cm -v.s.- [15 to 20 cm] run = 28 cm rise*run = 504 cm^2 -v.s.- [437.5 to 468.75 cm^2] rise+run = 46 cm -v.s.- [42.5 to 43.75 cm] 2*rise+run = 64 cm -v.s.- [60 to 62.5 cm] Even and odd number of steps. 4. Location: E3 Notes: Sweet 3 steps, they are ok. rise = 15 cm -v.s.- [15 to 20 cm] run = 29 cm rise*run = 435 cm^2 -v.s.- [437.5 to 468.75 cm^2] rise+run = 44 cm -v.s.- [42.5 to 43.75 cm] 2*rise+run = 59 cm -v.s.- [60 to 62.5 cm] 5. Location: E3 Notes: very good rise = 14.5 cm -v.s.- [15 to 20 cm] run = 29.5 cm rise*run = 427.75 cm^2 -v.s.- [437.5 to 468.75 cm^2] rise+run = 44 cm -v.s.- [42.5 to 43.75 cm] 2*rise+run = 58.5 cm -v.s.- [60 to 62.5 cm] 6. Location: MC Notes: great, solid, comfortable rise = 17.5 cm -v.s.- [15 to 20 cm] run = 27 cm (and in addition +6 cm overlap) rise*run = 472.5 cm^2 -v.s.- [437.5 to 468.75 cm^2] rise+run = 44.5 cm -v.s.- [42.5 to 43.75 cm] 2*rise+run = 62 cm -v.s.- [60 to 62.5 cm] 7. Location: HH Notes: Down - unstable rushed. Up - ok, but slightly lower than the "golden" rise. rise = 13.5 -v.s.- [15 to 20 cm] run = 31 rise*run = 418.5 cm^2 -v.s.- [437.5 to 468.75 cm^2] rise+run = 44.5 cm -v.s.- [42.5 to 43.75 cm] 2*rise+run = 58 cm -v.s.- [60 to 62.5 cm] v 8. Location: HH Notes: Good for my feet. One can stay on a step and look around. rise = 20 cm -v.s.- [15 to 20 cm] run = 30 cm rise*run = 600 cm^2 -v.s.- [437.5 to 468.75 cm^2] rise+run = 50 cm -v.s.- [42.5 to 43.75 cm] 2*rise+run = 70 cm -v.s.- [60 to 62.5 cm] Reference: I wanted to clarify the task for the week: you should find at least two sets of stairs, one "standard" and one "non-standard", measure them, photograph them, and walk up and down them, and report a qualitative feel. You should send me a pdf or url of your results. Preferrably, include rise*run, rise+run, and 2*rise+run, although we can compute those in class. You should also select a paper to present and a date on which to present it. We now have one presenter for each day of class; when additional people sign up, they can choose any day that has only one presenter. For the building of the week, I only need a date at this point, I don't need a building. And all I really need is someone to volunteer for this week (and I think someone volunteered at the end of class last week). I would prefer to have someone other than the presenters for the week to do the building of the week. (If we have more students than weeks, then we'll have two buildings some weeks.) Steve University of Waterloo Map http://www.uwaterloo.ca/map/index.php