5 ms·
> Made of polystyrene and with an internal steel skeleton, They weight 1.2 tons total. If they are made of polystyrene and steel, it stands to reason that a si
by pacificmint 1y ago
> Made of polystyrene and with an internal steel skeleton,
They weight 1.2 tons total. If they are made of polystyrene and steel, it stands to reason that a significant part of the 1.2 tons is contributed by the steel.