There is not set height for the ramps used for extreme bmx riding. To have a set height you would need to clarify the question. There are different types of bmx biking. Big air ramp would be the highest but even these vary from venue to venue. A good answer to this question is, higher than they were last year. The sport is constantly changing and therefore so is the height of the ramps. The height is not a static figure.
Aluminum ramps are for example used to store cars on a truck or to get on a specific hill without damaging your car. Aluminum ramps are also used for people who use a wheelchair.
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T spacers
ramps
Slaves used ropes used ropes and ramps to build the PYRAMIDS , as the stones [building blocks of pyramids] were too heavy to carry with hands or on their backs.
For example pyrometers for very high temperatures.
Motorcycle ramps are used for loading and unloading a motorcycle. If your storage space is close to ground level and you can ride your motorcycle to the storage space, then have a friend pick you up, no ramps will not be a necessity.
They used ramps and ropes tied to sleds.
A superhighway is a broad term used to describe a multi-lane, high-capacity road designed for high-speed traffic. It typically features limited access points, no intersections, and controlled entry and exit ramps. Superhighways are commonly used for long-distance travel between cities and regions.
a lot of things, ramps support things
aluminum is used during high presentations because of the separation process of the ore to refined aluminum used extreme amounts of energy(back then)
Heat energy developed by extreme high pressure.