Author Topic: Trout Brook Bridge - Official Work Thread  (Read 46581 times)

Dave Buczkowski

  • Museum Member
  • Engineer
  • ****
  • Posts: 728
  • Life Member
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #495 on: August 10, 2018, 03:06:38 AM »
More like a phft Dink.

Carl Soderstrom

  • Museum Member
  • Hostler
  • ***
  • Posts: 286
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #496 on: August 10, 2018, 05:08:53 AM »
No Steam, Capstan, or Horse power?

Oh! Right! It has to be done THIS decade.

Mike Fox

  • Museum Member
  • Superintendent
  • ********
  • Posts: 3,743
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #497 on: August 10, 2018, 01:16:31 PM »
what's the total number of piles to be driven?

22 seems to be my recollection, but that may a be an old number..
Mike
Doing way too much to list...

ALAIN DELASSUS

  • Museum Member
  • Baggageman
  • **
  • Posts: 108
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #498 on: August 10, 2018, 02:29:40 PM »
Hi ! How long will it take to drive them in?

Bill Baskerville

  • Museum Member
  • Engineer
  • ****
  • Posts: 598
  • Life Member
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #499 on: August 11, 2018, 12:10:50 AM »
what's the total number of piles to be driven?

22 seems to be my recollection, but that may a be an old number..

Eleven on each side of the stream. Four on each corner and three in a row in the center. The first was driven yesterday and three more today which completes four in the south east corner.
Wascally Wabbit & gofer

Bill Reidy

  • Museum Member
  • Engineer
  • ****
  • Posts: 604
  • Life member. Ack.
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #500 on: August 11, 2018, 01:27:24 AM »
Thanks Bill.  Sounds like great progress so far!
What–me worry?

Brendan Barry

  • Museum Member
  • Conductor
  • *****
  • Posts: 771
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #501 on: August 11, 2018, 02:51:39 AM »
For those not on facebook here's pictures of the start of the pile installation. The pictures were posted on the museums facebook page tonight.

https://www.facebook.com/WWFRailway











United Timber Bridge Workers, Local 1894, Alna, ME

Jeff Schumaker

  • Museum Member
  • Engineer
  • ****
  • Posts: 528
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #502 on: August 11, 2018, 01:38:27 PM »
What is the purpose of the corner piles?

Jeff S.
Hey Rocky, watch me pull a moose trout out of my hat.

Roger Cole

  • Switchman
  • **
  • Posts: 78
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #503 on: August 11, 2018, 03:23:32 PM »
Are the pilings sharpened like a pencil before pounding or are they driven down flat?

James Patten

  • Global Moderator
  • Superintendent
  • *****
  • Posts: 3,034
  • Loco for 6
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #504 on: August 12, 2018, 12:06:43 AM »
They are sharpened.  There's a giant pile sharpener hidden off to the side (kidding - they use a chain saw).

Benjamin Campbell

  • Switchman
  • **
  • Posts: 70
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #505 on: August 12, 2018, 01:30:45 AM »
Exciting progress! How deep were they able to be driven and are they in close proximity to buried remnants from the piles from the original bridges?
« Last Edit: August 12, 2018, 01:32:30 AM by Benjamin Campbell »

Bill Baskerville

  • Museum Member
  • Engineer
  • ****
  • Posts: 598
  • Life Member
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #506 on: August 12, 2018, 12:09:04 PM »
 According to my rough calculations from the first one on Thursday they are probably about 20 some feet into the ground. Jason of course knows exactly how they are.
Wascally Wabbit & gofer

John Kokas

  • Museum Member
  • Conductor
  • *****
  • Posts: 853
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #507 on: August 12, 2018, 01:00:46 PM »
Depth is not the determining factor,. These are friction piles which means the soil resistance against the pile determines the load.  I have had 25 ton piles at 30 feet and the same resistance on other piles at 80 feet.  I actually had a 40 ton pile go 100 feet and disappear into the soil as we discovered an underground cavern.  I will let Jason or Mike give us the exact design load.

Moxie Bootlegger

Mike Fox

  • Museum Member
  • Superintendent
  • ********
  • Posts: 3,743
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #508 on: August 12, 2018, 01:21:56 PM »
Design load was for 10 tons per pile, but that was using smaller piles. Not sure where we are with the larger piles, but will be fine.

The soil is also the determining factor for the piles. There is about 12 feet (if I remember correctly) of clay that these are going through to get to the glacial till, which is what I am in building the wall. I am told there is a noticeable increase in resistance when the pile reaches the glacial till. That is very good load bearing material.

There is ledge relatively close by, but too deep to find with the piles.
Mike
Doing way too much to list...

John L Dobson

  • Museum Member
  • Brakeman
  • ***
  • Posts: 182
    • View Profile
Re: Trout Brook Bridge - Official Work Thread
« Reply #509 on: August 12, 2018, 02:26:25 PM »
Are the piles rot-proofed in any way?
John L Dobson
Editor, FR Magazine