low cost pile-driving, Thailand(?)

"A short video of a pretty ingenious and very cost effective pile-driving construction technique. Notice that the pile-driving only becomes effective when the extra man jumps on. Very finely tuned; the chant is also catchy!

"If you want to analyze the engineering here:
6 men x 180 lbs = 1,080 lbs static force. Jumping up and down will create a 3 times dynamic effect = 3,240 lbs/jump = 1.6 ton thumps.

"If the pile is tapered to 2 in x 2 in, cross section at the tip = 4 square inches.
So, dynamic pressure/thump at pile tip = 3,240/4 = 800 psi.
"Add a man" feature will increase to 950 psi, so buy the option!
Increase the chant and dynamic force goes up to 5 times to bring max. pressure/thump to 1,600 psi for a 7 man team.

"Quite good and will penetrate hard clay and sandy soil but not hard rock. ... And to think not a single one of these seven chaps attended Georgia Tech, MIT, Cal Tech or even Virginia Polytechnic Institute!"