DeepseekerADS
Gold Member
- Mar 3, 2013
- 14,880
- 21,725
- Detector(s) used
- CTX, Excal II, EQ800, Fisher 1260X, Tesoro Royal Sabre, Tejon, Garrett ADSIII, Carrot, Stealth 920iX, Keene A52
- Primary Interest:
- Other
A short video of a Pakistani 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!!
Now, let's analyze the engineering here;
6 men x 180 lbs = 1080 lbs static force. Jumping up and down will create a 3
times dynamic effect = 3240 lbs/jump = 1.6 ton thumps. If the pile is
tapered to 2 in x 2 in, cross section at the tip = 4 in 2. So, dynamic
pressure/thump at pile tip = 3240/4 = 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 1600 psi for a 7 man
team.
Quite good and will penetrate hard clay and sandy soil but not hard rock!
Pretty ingenious. The foreman is the guy on the tambourine.
[video]www.youtube-nocookie.com/embed/cFb0nLCKypg?rel=0[/video]
that the pile driving only becomes effective when the extra man jumps on.
Very finely tuned! The chant is also catchy!!
Now, let's analyze the engineering here;
6 men x 180 lbs = 1080 lbs static force. Jumping up and down will create a 3
times dynamic effect = 3240 lbs/jump = 1.6 ton thumps. If the pile is
tapered to 2 in x 2 in, cross section at the tip = 4 in 2. So, dynamic
pressure/thump at pile tip = 3240/4 = 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 1600 psi for a 7 man
team.
Quite good and will penetrate hard clay and sandy soil but not hard rock!
Pretty ingenious. The foreman is the guy on the tambourine.
[video]www.youtube-nocookie.com/embed/cFb0nLCKypg?rel=0[/video]
