Previous in Forum: Holes on the Street of Indonesia   Next in Forum: Question about concrete.
Close
Close
Close
14 comments
Rating: Comments: Nested
Guru
Popular Science - Weaponology - New Member

Join Date: Jan 2013
Posts: 650
Good Answers: 16

Human Effort Engineering - Any More Suggestions?

05/16/2015 2:33 AM

Doing the rounds ....


"Something to cheer up the Engineer in you.
Just to put you in the picture and keep you up to date with the latest developments.
Below is a link to a short video of a Pakistani pile driving construction technique!

The chant is also catchy!

Now, let's analyse 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 sq. in.
then 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 or rocky ground!) Pretty ingenious.
Oh, the Supervisor is the guy on the tambourine.
https://www.youtube-nocookie.com/embed/cFb0nLCKypg?rel=0

"

__________________
DY
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9910
Good Answers: 1141
#1

Re: Human effort engineering - any more suggestions?

05/16/2015 1:22 PM

Hey, don't knock it. It gets the job done!

Register to Reply
Guru
Canada - Member - New Member

Join Date: Jul 2013
Location: Canada but south of 49
Posts: 895
Good Answers: 20
#14
In reply to #1

Re: Human effort engineering - any more suggestions?

07/31/2015 4:02 PM

And,,, it employs people. Reminds me of consulting days in Bangladesh. No cranes or lifting devices at all, so the "yard crew" consisted of 35 men. They moved everything with levers and ramps off of and onto rail cars. Best one I saw them do was an old shaper, must have weighed in at least 10 tons.

__________________
Never stop learning
Register to Reply
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33392
Good Answers: 1817
#2

Re: Human effort engineering - any more suggestions?

05/16/2015 1:55 PM

You'd think they could at least construct a Roman type pile driving apparatus....

__________________
All living things seek to control their own destiny....this is the purpose of life
Register to Reply
Guru
Popular Science - Weaponology - New Member

Join Date: Jan 2013
Posts: 650
Good Answers: 16
#6
In reply to #2

Re: Human effort engineering - any more suggestions?

05/17/2015 2:36 AM

Wasn't it the Romans that built the sewer system and other infrastructure ....
how could they do it then, and we seem to be dragging the chain a bit these days?
http://www.rome.info/ancient/aqueducts/

__________________
DY
Register to Reply
Guru

Join Date: Feb 2008
Location: Large hole formally occupied by furry woodland creature.
Posts: 3385
Good Answers: 97
#12
In reply to #2

Re: Human effort engineering - any more suggestions?

05/18/2015 12:16 PM
__________________
CRTL-Z
Register to Reply
Guru
Popular Science - Weaponology - New Member United Kingdom - Member - New Member

Join Date: May 2007
Location: Harlow England
Posts: 16512
Good Answers: 670
#3

Re: Human effort engineering - any more suggestions?

05/16/2015 4:36 PM

Simple is good.

Excellent use of resonance too.

I'me sure some smart ar$e with CAD could complicate it to the point of uselessness.

Del

__________________
health warning: These posts may contain traces of nut.
Register to Reply
Guru

Join Date: Feb 2008
Location: Large hole formally occupied by furry woodland creature.
Posts: 3385
Good Answers: 97
#4

Re: Human effort engineering - any more suggestions?

05/16/2015 5:48 PM

There were two more guys, but they already had piles.

__________________
CRTL-Z
Register to Reply
Guru

Join Date: Aug 2007
Location: Earth - I think.
Posts: 2143
Good Answers: 165
#5

Re: Human effort engineering - any more suggestions?

05/16/2015 7:02 PM

Nope. It takes aliens with anti-gravity technology to drive a pile. Just ask this guy:

__________________
TANSTAAFL (If you don't know what that means, Google it - yourself)
Register to Reply
Guru

Join Date: Jun 2011
Location: Phnom Penh
Posts: 4019
Good Answers: 102
#7

Re: Human Effort Engineering - Any More Suggestions?

05/17/2015 5:49 AM

Take a closer look at that video and you will see the spoils of the holes that were hand bored first before these columns/piles were slipped down into the holes. There a few of the post hole digers that were used to create those holes propped around the scene too.

So it's not driving piles to a specified resistance at all. It is core lining only. Light load wet piling?

Here they use various rigs that actually do drive piles to resistance. Some have manually lifted pile hammers, some use winches to lift the hammer.

Bigger sites use contemporary powered equipment.

But I will remember this technique, I'm sure it will come in handy one day.

__________________
Difficulty is not an obstacle it is merely an attribute.
Register to Reply
Guru

Join Date: Feb 2008
Location: Large hole formally occupied by furry woodland creature.
Posts: 3385
Good Answers: 97
#8

Re: Human Effort Engineering - Any More Suggestions?

05/17/2015 8:43 AM

Pogopiledrivers Instructions: 1. Put sharp end in ground. 2. Start tambourine. 3. Give movement to bottom. 4. Continue.

__________________
CRTL-Z
Register to Reply
Guru
Popular Science - Weaponology - New Member

Join Date: Jan 2013
Posts: 650
Good Answers: 16
#9

Re: Human Effort Engineering - Any More Suggestions?

05/17/2015 9:19 AM

Adding to the instructions .....
The English all weather inspiration ... and support for the tambourine man

__________________
DY
Register to Reply
Guru

Join Date: Feb 2008
Location: Large hole formally occupied by furry woodland creature.
Posts: 3385
Good Answers: 97
#10
In reply to #9

Re: Human Effort Engineering - Any More Suggestions?

05/17/2015 10:47 AM

That British chap has a serious medical condition, caused by chronic spousal headache.

__________________
CRTL-Z
Register to Reply
Guru
Popular Science - Weaponology - New Member

Join Date: Jan 2013
Posts: 650
Good Answers: 16
#11
In reply to #10

Re: Human Effort Engineering - Any More Suggestions?

05/17/2015 11:21 AM

A bit like this I presume .....

__________________
DY
Register to Reply Off Topic (Score 5)
Guru

Join Date: Jun 2010
Location: srilanka
Posts: 2725
Good Answers: 5
#13

Re: Human Effort Engineering - Any More Suggestions?

06/01/2015 8:03 AM

Ancestors pumped water,threw projectiles,driven piles,even pedal powered boats.

__________________
pnaban
Register to Reply
Register to Reply 14 comments
Copy to Clipboard

Users who posted comments:

Don from Oz (3); Kevin LaPaire (1); Kilowatt0 (1); pnaban (1); Rixter (1); SolarEagle (1); Unredundant (4); user-deleted-1105 (1); Wal (1)

Previous in Forum: Holes on the Street of Indonesia   Next in Forum: Question about concrete.

Advertisement