What was the weight of the beams of the mishkan? We are given the dimensions of the beams (10 amos) and we find that Chazal say Moshe stood them up by a miracle. Obviously they were very heavy. What would be the approximate weight of each of these beams?
As I agree with @robev, I came across an interesting article called "THE CONSTRUCTION OF THE TABERNACLE" written by Ephraim M. Epstein. In this article, Epstein writes (The Monist Vol. 21, No. 4 (OCTOBER, 1911), pp. 567-623):
Nor can we rely on the sockets mentioned in the specification, for they weighed only a talent each of silver (see Ex. xxxviii. 27), being 93 3/4 pounds, and even though there were two sockets for each board, this amount of metal would not be a sufficient base to secure a board of 16 feet 8 inches high and 2/2 feet broad to stand upright against the gust of a desert wind
Epstein seems to refer to Shemos 38:27 where it writes:
The 100 talents of silver were for casting the sockets of the sanctuary and the sockets for the curtain, 100 sockets to the 100 talents, a talent a socket.
Epstein, E. M. (1911). THE CONSTRUCTION OF THE TABERNACLE. The Monist, 21(4), 567–623. http://www.jstor.org/stable/27900348