Recent Posts

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Work and Events / Re: Down the Mountain to Trout Brook - Official Work Thread
« Last post by Eric Larsen on January 15, 2018, 04:15:40 PM »
I wonder what the grade height was originally?  We are only looking at what exists now after almost 100 years of erosion and logging operations that widened and lowered the top of the grade a bit.  I would think it prudent to have the area north of the bridge start a slow southward incline to the bridge so that it could be as high off of the brook as reasonably possible.  That would also serve to minimize the amount of the grade further south and help get a better running start.  Of course I understand that gets expensive as more fill material is required but that would be the best way to do it I would think. 
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Volunteers / Re: January 2018 Work Planning
« Last post by Jason M Lamontagne on January 15, 2018, 01:39:50 PM »
Crew call for tomorrow! 

Cutting trees on the mountain - with the frozen ground and lack of snow, this will likely be our best chance all winter.  Please come if you can!

Let us know so we can plan on you...

Jason
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Work and Events / Re: Down the Mountain to Trout Brook - Official Work Thread
« Last post by Wayne Laepple on January 15, 2018, 02:38:05 AM »
Well, it all works out nicely if you have all the numbers before you. 12 inches of rise in 200 feet is a 0.5% grade. Much better than what I estimated based on the contour numbers on the map. If a transit is set up on the bridge, which is presumed to be level, and the grade is maintained level out to the point where it encounter the current grade southbound, you'd be able to get a fairly decent run for the steeper grade ahead.
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Work and Events / Re: Down the Mountain to Trout Brook - Official Work Thread
« Last post by John Kokas on January 15, 2018, 01:54:06 AM »
So if I understand both Mike and Jason correctly;  if the bridge remains at the "higher" height, with some small amount of fill and then the new track, we are essentially level from the bridge north to 218.  Southbound grade get eased for the first 1000 or so feet heading up the mountain.  Makes for a good terminus and also to get a run at the mountain.  Love it when a plan comes together   ;D
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An important detail in figuring grade is that the final rail height would have been about 12” above current grade height anyway (grub off 4”, add 6” stone, 6” 4” rail).  Therefore the 3’ 2” is really only a change of 2’2”.  The grade to the north of the bridge indeed rises up- haven’t surveyed that but I’d estimate 12” in 200’.  So it’ll all smooth in fairly nicely.

Jason
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Work and Events / Re: Down the Mountain to Trout Brook - Official Work Thread
« Last post by Mike Fox on January 15, 2018, 12:26:41 AM »
Actually, the grade south and north rise from the bridge site, so the length required to get back down to original height is a lot shorter than Waynes estimate. Jason has it figured around 250 feet south, and about the same to the north.

Bill, the climb is steady until we get to location 9, see the map in the last newsletter, then it increases slightly and starts into some curves. Last climb from beween location 2 & 1 increases to what must be 3%.
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Work and Events / Re: Down the Mountain to Trout Brook - Official Work Thread
« Last post by Wayne Laepple on January 14, 2018, 11:26:17 PM »
If the bridge is raised 3 feet-plus above the current grade, to about 25 feet above sea level, in order to come back down to meet the current grade on the west side at a reasonable rate, the runoff would have to extend at least 700 feet (1% grade) north toward Route 218, reaching the current grade well beyond the end of the curve and somewhere around 300 feet from Route 218's right-of-way. That doesn't leave a whole lot of space for a runaround track or anything else. Going south, the runoff would be about 350 feet, almost level, to meet the 24 foot contour line. Neither of these back-of-the-envelope estimates takes into account the sub-ballast, ballast ties and rail. I had to do a similar exercise in order to raise a bridge over a highway to clear taller trucks some years ago, and I as I recall, we ran off each end for about 500 feet to meet the exiting grade. Your mileage may vary.
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Work and Events / Re: Down the Mountain to Trout Brook - Official Work Thread
« Last post by Bill Reidy on January 14, 2018, 11:21:38 PM »
Thanks Mike.  If I'm reading the topo correctly, it looks like the grade is fairly level or rises very gradually north->south north of the bridge.  Based on the bridge diagram, the bridge looks level, and the topo shows the grade starts to climb south of the bridge.
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Work and Events / Re: Mountain Extension Tree Clearing
« Last post by Carl Soderstrom on January 14, 2018, 11:09:03 PM »
If my vote counts - keep it high.
The Hundred Year Floods seem to be coming every 10 to 12 years around here.

Though not exactly historically accurate - to alleviate fill and retaining walls - could the approaches
be on pile trestles? 2 to 3 foot high? Use concrete posts  to cut down maintenance, stained brown.

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Work and Events / Re: Mountain Extension Tree Clearing
« Last post by Mike Fox on January 14, 2018, 10:42:21 PM »
Check the Mountain Thread for the grade discussion
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