Author Topic: Trout Brook Bridge - Official Work Thread  (Read 107872 times)

Harold Downey

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Re: Trout Brook Bridge - Official Work Thread
« Reply #510 on: August 12, 2018, 03:14:30 PM »
I believe the green color is evidence of treatment.  Wood is not naturally that color (except poplar).

Jason M Lamontagne

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Re: Trout Brook Bridge - Official Work Thread
« Reply #511 on: August 12, 2018, 06:11:17 PM »
2.5 CCA

About 8’ of clay, then 2-3’ of till engagement.  Larger piles doesn’t mean greater carrying capacity- as the limiting factor is the till engagement, which is limited by hammer size, which is limited by crane size, which is limited by the permit restriction of working from the top of the roadbed.


John Kokas

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Re: Trout Brook Bridge - Official Work Thread
« Reply #512 on: August 12, 2018, 07:39:56 PM »
Are we planning for any "armor" for the upstream side piles for protection during spring thaw and ice jam movement?
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Joe Fox

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Re: Trout Brook Bridge - Official Work Thread
« Reply #513 on: August 12, 2018, 08:15:52 PM »
The bridge is getting the same thing as any other bridge on or near a stream bed has, which is piles at slight angles.
Track laborer, roadmaster, general laborer, and much more.

Mike Fox

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Re: Trout Brook Bridge - Official Work Thread
« Reply #514 on: August 12, 2018, 08:41:21 PM »
Those are called batter piles.

The south west side was armored originally when built, and is still in great shape. And during our research found that adding any armorment could cause more harm than intended erosion control.
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Mike the Choochoo Nix

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Re: Trout Brook Bridge - Official Work Thread
« Reply #515 on: August 13, 2018, 02:17:10 PM »
Interesting thing about piles is most of the support is not the base it's the sides. Have you ever tried to pull a stake? It works the same way for downward pressure. A well driven pile will hold many times more than the area of it's base would suggest.
Just for fun here's a video of a steam pile driver that was used to build docks on the great lakes. The show also has a 600mm steam railroad.
https://m.youtube.com/watch?v=8_7PPQx3PUY

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John L Dobson

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Re: Trout Brook Bridge - Official Work Thread
« Reply #516 on: August 13, 2018, 03:14:18 PM »
What kind of pile driver are you using – is it the kind where a diesel cylinder is mounted on the pile and the thrust is generated by the reaction of the metal mass?
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Mike Fox

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Re: Trout Brook Bridge - Official Work Thread
« Reply #517 on: August 13, 2018, 05:53:37 PM »
Pneumaticly driven pile driver.
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Brendan Barry

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Re: Trout Brook Bridge - Official Work Thread
« Reply #518 on: August 14, 2018, 01:42:44 AM »
Progress pictures from today.

















United Timber Bridge Workers, Local 1894, Alna, ME

Bill Reidy

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Re: Trout Brook Bridge - Official Work Thread
« Reply #519 on: August 14, 2018, 01:55:49 AM »
Thanks Brendan.  Looks like work is progressing well with the pilings.
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ALAIN DELASSUS

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Re: Trout Brook Bridge - Official Work Thread
« Reply #520 on: August 14, 2018, 02:17:26 PM »
Hi! Brendan and thanks fort those inetresting pics . I 'm at sea when it comes to bridgeing a river but by now and due to all those photos and explanations I start to be aware of how it works and it looks like being a big deal given the  hard preparation works  and the heavy rig that are involved .

John Kokas

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Re: Trout Brook Bridge - Official Work Thread
« Reply #521 on: August 14, 2018, 02:50:10 PM »
Brendan,

Wonderful shots of the work - keep it up!  Only one question;  Where is the Director's chair and Fred?  ;)
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Fred Morse

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Re: Trout Brook Bridge - Official Work Thread
« Reply #522 on: August 14, 2018, 06:37:28 PM »
Cutting Ties!

Jeff Schumaker

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Re: Trout Brook Bridge - Official Work Thread
« Reply #523 on: August 14, 2018, 06:41:48 PM »
Impressive work.

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Brendan Barry

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Re: Trout Brook Bridge - Official Work Thread
« Reply #524 on: August 15, 2018, 01:06:30 AM »
The piles on the south bank were finished today and given an initial trim to height.



Pile caps coming off the truck. The long untreated timber is part of the temporary bridge assembly that will be used to roll the bridge across.



A bundle of cribbing being craned across the brook.



Pile cap heading across the brook.



Pile cap being lowered onto the piles for a test fit.

United Timber Bridge Workers, Local 1894, Alna, ME