How much taller is the building when the temperature is T=115 deg F? (The linear expansion coefficient of steel is A=1.1 x 10^-5 (Deg C)^-1.) Answer in units of cm.
2007-02-09 13:00:27 · 2 answers · asked by naids56 2 in Science & Mathematics ➔ Physics
Whoever set this question has no knowledge of the building industry and its methods.
When a building is contructed of steel there are allowances made for expansion They are called Expansion Joints! They are the gaps between the girders to accommodate climate variances,
So while the steel may expand the building remains the same height as it was. If these joints were not put in then cracks in the interior walls and ceilings would be a common occurrence and the building would not be passed as safe by the council or the building inspector. So go back to the teacher and give him this answer as his question is not valid!
2007-02-09 13:14:03 · answer #1 · answered by Shelty K 5 · 0⤊ 6⤋
ΔT = 115°F = 46.1°C
Co-efficient of expansion = 0.000011/°C
46.1 x 0.000011 x 85,500 cm = 43.4 cm
2007-02-13 12:41:31 · answer #2 · answered by Norrie 7 · 1⤊ 0⤋