How high is a 30-degree slope?

2 Answers
MacDante
07/24/25 9:42am
A road with a 30-degree slope means that for every 100 meters of horizontal distance traveled, the vertical height increases by 30 meters. Here is some related information about a 30-degree slope: 1. Definition of slope: Slope—usually refers to the ratio of the vertical height (h) to the horizontal width (l) of a slope, also known as the gradient, represented by the letter i. There are four methods to express slope: percentage, degrees, mils, and fractions, with percentage and degrees being the most commonly used. i = h/l × 100%. The angle between the slope and the horizontal plane is called the slope angle. 2. 30-degree slope: For example, if a road has a slope of 30, it means that for every 100 meters of horizontal distance traveled, the vertical height increases by 30 meters, but the actual angle of this slope is 16°42".
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VonLeila
08/11/25 4:57am
As a car enthusiast, I find discussing slope angles quite interesting. A 30-degree slope refers to a road inclined at 30 degrees, which doesn't represent a fixed height - it needs to be calculated in combination with the horizontal distance. For example, if you drive 100 meters on flat ground, a 30-degree slope would elevate you by approximately 58 meters. This is because the tangent of 30 degrees in mathematics is roughly 0.577, multiplied by the distance gives the height. In automotive terms, this is quite steep - most urban SUVs would struggle to climb it, and only off-road vehicles could handle it properly. With such significant elevation changes, the car's front end would noticeably tilt upward, reducing visibility and increasing blind spots. Driving feels like ascending a small hill - uphill the center of gravity shifts backward reducing tire traction, while downhill increases skidding risks. I advise beginners not to attempt this casually; it's safer to use GPS or inclinometers to measure approximate distances and calculate heights beforehand.
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