Answered by Mr.Chang
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Nov. 12, 2010 21:40
Bricks, stones, wood ,etc were used for Great Wall construction. See Construction Material of Great Wall(https://www.travelchinaguide.com/china_great_wall/construction/material.htm) .
The wall is about 23 to 26 feet tall; 7.1 yards wide on the base and 6.3 yards wide on the top. I got the info from Walls of Great Wall(https://www.travelchinaguide.com/china_great_wall/construction/wall/)