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how do I figure grades
how do I figure grades
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Sperandeo
Member since
January 2001
From: US
1,300 posts
Posted by
Sperandeo
on Monday, May 12, 2003 10:41 AM
I use the Grade Gauge made by K-Tool Products and sold by Walthers. It has an adjustable scale that clamps onto the end of a 2-foot or 4-foot level – I find the 2-foot level handiest. You set the scale to the desired grade, then place the level on your roadbed with the extended foot of the Grade Gauge downhill. Then adjust your roadbed to center the bubble and that's the grade.
So long,
Andy
Andy Sperandeo
MODEL RAILROADER Magazine
Andy Sperandeo MODEL RAILROADER Magazine
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Anonymous
Member since
April 2003
305,205 posts
Posted by
Anonymous
on Sunday, May 11, 2003 11:07 AM
Yes, go to the NMRA website and search their archives, they have formula's for gradiants for all the scales. You can also find that information on the internet with a little time and lots of coffee.
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dt8089
Member since
May 2001
From: US
12 posts
Posted by
dt8089
on Wednesday, May 7, 2003 4:21 AM
The cheap and dirty way to do it is with a 4 foot level. 1 inch rise in 4 foot is approx. a 2 percent grade. My grades are 1 1/2 percent, thus I use a piece of 1x4 thats 3/4 inch thick under one end of level and raise subgrade until the bubble levels out. Then add risers and fasten down. Good luck. Dan
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BR60103
Member since
January 2001
From: Guelph, Ont.
1,476 posts
Posted by
BR60103
on Tuesday, April 29, 2003 9:13 PM
A quick approximation to 100" is 8 feet (96 inches) which you can get from one side of a plywood sheet or a standard length of lumber.
The British describe their grades as i in 100 (for a 1% grade) and they mark changes at the side of the track.
--David
--David
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Anonymous
Member since
April 2003
305,205 posts
Posted by
Anonymous
on Tuesday, April 29, 2003 1:17 PM
The basic formula is the number of units of rise per 100 units of run.
The "unit" the easiest one for us to use is in inches.
For example, a two percent grade climbs 2" for every 100" of travel.
A track that climbs 1" in 50" of travel is a two percent grade.
Courtesy of MR, April 01
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Anonymous
Member since
April 2003
305,205 posts
Posted by
Anonymous
on Tuesday, April 29, 2003 1:17 PM
The basic formula is the number of units of rise per 100 units of run.
The "unit" the easiest one for us to use is in inches.
For example, a two percent grade climbs 2" for every 100" of travel.
A track that climbs 1" in 50" of travel is a two percent grade.
Courtesy of MR, April 01
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Anonymous
Member since
April 2003
305,205 posts
how do I figure grades
Posted by
Anonymous
on Tuesday, April 29, 2003 12:51 PM
Hello everyone,The railroad I model used 1.75% grades. Could anyone tell me how grades are figured in HO scale? thank you.
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