Glossary entry

Spanish term or phrase:

entre línea de ceros

English translation:

between the gradient/slope line

Added to glossary by Julie Thompson
Mar 27, 2013 15:50
11 yrs ago
2 viewers *
Spanish term

entre línea de ceros

Spanish to English Tech/Engineering Construction / Civil Engineering Mexican Govt agency handout
This phrase comes from a handout by the Secretaria del Medio Ambiente y Recursos Naturales. The particular paragraph describes a highway construction project:

El proyecto consiste en la construccion de una carretera con dos carriles y acotamientos exteriores, requeriendo una superficie ENTRE LINEA DE CEROS de 200,000 ha.


Don't tell me that I just use the phrase "between a zero line"; please tell me that it's more complicated...!

Proposed translations

16 mins
Selected

between the gradient/slope line

http://es.scribd.com/doc/60353614/LINEA-DE-CEROS

The grade (also called slope, incline, gradient, pitch or rise) of a physical feature, topographic landform or constructed element refers to the amount of inclination of that surface to the horizontal. It is a special case of the gradient in calculus where zero indicates gravitational level. A larger number indicates higher or steeper degree of "tilt". Often slope is calculated as a ratio of "rise" to "run", or as a fraction ("rise over run") in which run is the horizontal distance and rise is the vertical distance.
Grade or slope is applied to measuring existing physical features (such as canyon and hillsides, stream and river banks and beds), or in designing and engineering new elements for construction (such as roads, landscape and garden grading, roof pitches, railroads, aqueducts, and pedestrian-handicapped-bicycle circulation routes).

http://en.wikipedia.org/wiki/Grade_(slope)

http://forum.wordreference.com/showthread.php?t=61247

Grade (Gradient) — The slope of the road along its alignment. This slope is expressed as a percentage and is the ratio of elevation change compared to distance traveled. For example, a +4% grade indicates a gain of 4 units of measure in elevation for every 100 units of measure traveled.

http://www.nativerevegetation.org/learn/manual/ch_3.aspx

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Note added at 20 mins (2013-03-27 16:10:50 GMT)
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The definition of línea de ceros:

Línea de ceros o línea de pendiente:
Es una línea que une los puntos obligados del proyecto conservando una pendiente especificada, constante y uniforme. Esta línea va a ras del terreno y, de coincidir con el eje de la vía, presentaría mínimo movimiento de tierras.
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4 KudoZ points awarded for this answer. Comment: "I picked this as the most general of the terms. No rebuttal from the client, so thanks!"
31 mins

between zero line/grade line

.

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Note added at 31 mins (2013-03-27 16:22:35 GMT)
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Gradients can be measured directly, independent of the distance between clinometer and target. Thus lines (routes) with required gradients can easily be found. The so-called "zero line" or "grade line", which is one of the basic criteria for locating a forest road in steep terrain, is determined by use of the clinometer. A word of caution with regard to the use of clinometers is, never mix up readings of percent and degrees, since both functions are normally given on the instrument scales. The percent readings correspond to the tangent functions of the degrees and are quite different, and if the two are mixed while reading the scale, it will lead to errors in calculations and grade lines.

http://www.fao.org/docrep/W8297E/w8297e05.htm
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8 hrs

(surface) between natural/existing ground lines

The term is "superficie entre línea de ceros", although it should be in fact "superficie entre líneas de ceros" because they are two lines, one on each side of the road.
"Superficie entre líneas de ceros" in this context means the equivalent surface of natural terrain over which the road is/will be constructed.
It is obtained by multiplying the length of the projected road (along the zero/slope line explained by Helena and Bill) and the width of the road, including the traffic lanes, the shoulders and the side slopes if there are any.
In the first reference below, page 15, you will find a diagram explaining how the "superficie entre línea de ceros" is calculated.
In the other references, there are a few cross sections of roads. As you can see, it's difficult to find a specific term for this measure, I propose the term above which I think explains fairly well what it is.

Saludos!



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Note added at 8 hrs (2013-03-28 00:06:00 GMT)
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http://www.new-nh3.com/index.php?id=3
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Reference comments

26 mins
Reference:

Línea de ceros en un plano

http://doblevia.wordpress.com/2007/02/08/linea-de-ceros-en-u...

Una de las etapas del diseño de una vía consiste en el trazado antepreliminar, en el cual se establecen diferentes poligonales que comuniquen los puntos de control primario del proyecto, es decir, aquellos centros urbanos, o centros productivos o de cualquier otro interés (económico, turístico, poblacional, etc.), por los que necesariamente tiene que pasar la vía. Generalmente se traza primero la línea de ceros o de pendiente sobre un plano o un mapa.
Peer comments on this reference comment:

neutral Helena Chavarria : The text in your reference is exactly the same as in the one I have included in my answer. http://es.scribd.com/doc/60353614/LINEA-DE-CEROS So is mine
13 mins
????? I think mine is in Spanish..... Well, it seems the same thing is on different sites then.......
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