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
11%
27%
9%
51%
43
flagthe Netherlands
5%
35%
11%
47%
17
flagRussia
12%
22%
12%
41%
31
flagthe United Kingdom
21%
15%
22%
40%
70
flagthe United States
4%
36%
18%
40%
22
flagIndia
20%
13%
26%
40%
15
flagPoland
21%
30%
16%
31%
2706
flagItaly
30%
30%
20%
20%
10
flagUnknown
31%
30%
18%
19%
258

Gender

men26%
women28%
marble
24%
15%
sandstone
32%
36%
granite
16%
19%
pumice
26%
28%

Details

Author: globalquiz.org
Illustration: steve p2008
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