Triskaidekaphobia?

DaisyNonna | 01:20 Mon 21st Feb 2011 | ChatterBank

27 Answers

Why, when 13 is regarded by some people as unlucky, do so many flights of stairs have 13 steps?

Why All the Diet Nonsense?

your dream house

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Mamyalynne

its the hight of the ceiling that guvorns the amount of steps. building regs state a step should be no more than 8" =200cm
the ceiling hight is 2.4m plus the joists, then devide by x that usually gives 13 steps most new houses have the same ceiling hight but not all houses have 13 steps .

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Mamyalynne

^^ governs