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
flagGermany
6%
35%
3%
54%
31
flagRussia
9%
22%
9%
45%
22
flagthe United States
4%
33%
19%
42%
21
flagIndia
20%
13%
26%
40%
15
flagthe United Kingdom
27%
14%
21%
36%
47
flagPoland
17%
32%
15%
34%
1532
flagUnknown
7%
30%
34%
26%
26

Gender

men31%
women26%
marble
18%
13%
sandstone
33%
40%
granite
16%
19%
pumice
31%
27%

Details

Author: globalquiz.org
Illustration: steve p2008
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