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Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
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Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
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Pakistani Pile Driver . . . .
Here's a construction technique that would be handy to know. Read the calculations below then click on the link at the bottom of the article to see this technique in action.
Itās something to cheer up any engineer. It will put you in the picture and keep you up-to-date with the latest construction developments.
Below is a link to a short video of a Pakistani pile driving construction technique. Notice that the pile driving 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 = sq. in. So, dynamic press "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 maximum pressure/thump to 1600 psi for a 7-man team.
Quite good, and it will penetrate hard clay and sandy soil but not hard rock!
We figure the foreman is the guy on the tambourine...you'll probably watch this twice because you won't want to believe
your eyes the first time...
Pakistani Pile Driver . . . .
Here's a construction technique that would be handy to know. Read the calculations below then click on the link at the bottom of the article to see this technique in action.
Itās something to cheer up any engineer. It will put you in the picture and keep you up-to-date with the latest construction developments.
Below is a link to a short video of a Pakistani pile driving construction technique. Notice that the pile driving 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 = sq. in. So, dynamic press "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 maximum pressure/thump to 1600 psi for a 7-man team.
Quite good, and it will penetrate hard clay and sandy soil but not hard rock!
We figure the foreman is the guy on the tambourine...you'll probably watch this twice because you won't want to believe
your eyes the first time...
