I'm interested in seeing a structure to a question that appears impossible/overwhelming , such as
"How much concrete is used on the island of Manhattan?"
How granular of a level is both reasonable for the interviewee and satisfactory as an answer for the interviewer?
(edited)
Hi Anonymous,
you can consider the following steps:
Best,
Francesco
To elaborate on other answer, for each block then you take an assumption of what is empty vs. Concrete volume by multiplying the width and length of block by the avg height of building and then assuming a “density factor” (I.e. how much space in a cubic meter is concrete vs. Empty) and then multiply by the number of blocks with the distinction of high vs low density.
Andrea
Hi,
Best
Concrete is the most widely used manmade material on earth. 40 million tons of the stuff is poured every year and the world consumes 150 billion tons each year. The concrete used on the island of Manhattan weighs 900,000 tons. It would take 225 trucks to carry that much concrete with Slabjacking. The Empire State Building weighs 7,000,000 tons. How much concrete was used in the building?