How is this calculated
How is this calculated
(OP)
Hi
Can some one help with (see attached):
whats the highlighted header called "Y over scored"
Whats the formula for calculating this ?
Can some one help with (see attached):
whats the highlighted header called "Y over scored"
Whats the formula for calculating this ?






RE: How is this calculated
Presumably the value would be 1,176.3 if they showed the distance to its fourth digit.
RE: How is this calculated
RE: How is this calculated
RE: How is this calculated
RE: How is this calculated
RE: How is this calculated
I am actually trying create a spread sheet for this calculation. Thats the reason I have to understand couple of these values & how they were calculated.
From your help, I understabd the formula is basically. I have attached better picture.
moment=force x distance
With this I am able understand all the values for the column "Momemt at B-B".
But, further down, there is a calulation for moment at A-A.
here I don't understand the numbers red circled numbers 16.09, 10.09 & 7.3
Are these the distances from point of load application to Section plane A-A?
Also, why is the green circled force changed. Do you guys think this is mistake ?
Thanks
RE: How is this calculated
RE: How is this calculated
Yes, to find the moment at A-A you multiply the forces by the distance of the centroid of each force from the axis.
And yes, the number that is changed looks like a mistake; you should tell whoever gave you the drawing.
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: How is this calculated
The value of "93.06" in the moment at A-A calc should be the value of "193.06" from the table - typo error!
RE: How is this calculated
RE: How is this calculated
RE: How is this calculated
another day in paradise, or is paradise one day closer ?
RE: How is this calculated
Normally, I use FEA tools and get done with. This way, I have really lost touch with basic calculations. Also, I don't want ask too many questions at one point, that's why I am asking in parts.
Question : Torsional Moment
I understand that this the kind of force generated due to effect of wind force on the element like a Banner, arm or a signage that sticking out from the center line of the pole. Thus generating the twisting effect on the pole (torque)
1. I see that the 183.16 is the force on the banner, but whats the value (2.58) underlined? I guess its the horizontal distance from the pole center to the center of the banner (thanks oldrunner).Also I looked in aashto code, probably its very basic, that's why its not showing it there.
I would appreciate if you can help me with where in aashto LTS i could find this.
2. Is there a any where online a revision history of aashto code LTS. I need to know what changed from LTS3 to 4 to 5 to 6. Is it documented anywhere.
3. I know that EPA is calculated by area x coefficient of drag. Is this a project area or surface area
I have included the spread sheet I have so far.
RE: How is this calculated
another day in paradise, or is paradise one day closer ?
RE: How is this calculated
sect A-A looks to be 3.41' above the ground (sect B-B) ... in the calc (with the circled numbers) 93.06 should be 193.06, and 7.3 should be 7.09 (to be consistent with the other parts of the calc.
another day in paradise, or is paradise one day closer ?
RE: How is this calculated
another day in paradise, or is paradise one day closer ?
RE: How is this calculated