What kind of stone was used for the construction of the Panthenon's dome in Rome?

marble
sandstone
granite
pumice
The porous light stone was used in the concrete of the dome to reduce its weight. Sci­en­tists es­ti­mat­ed that, if normal weight concrete had been used through­out, the stresses in the arch would have been some 80% greater. The same tech­nique was for the ceilings of the Colos­se­um.

Answers distribution

marble
sandstone
granite
pumice
answers
flagRussia
11%
13%
11%
57%
59
flagthe Netherlands
5%
31%
10%
52%
19
flagGermany
12%
28%
10%
50%
50
flagthe United States
3%
29%
22%
44%
27
flagthe United Kingdom
20%
15%
23%
41%
73
flagIndia
20%
13%
26%
40%
15
flagPoland
20%
29%
16%
32%
3018
flagUnknown
31%
30%
17%
19%
268
flagItaly
27%
36%
18%
18%
11

Gender

men27%
women28%
marble
24%
14%
sandstone
31%
36%
granite
16%
19%
pumice
27%
29%

Details

Author: globalquiz.org
Illustration: steve p2008
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