Problem: Article: This could be a road, a driveway or a structure. It can also be beneficial to position a snow fence near sidewalks and pathways to keep them relatively clear. A snow fence belongs upwind of the area it's protecting, roughly perpendicular to the wind. For example, if your winds blow from east to west, you'll want a snow fence on the east side of the area, running northsouth. This doesn't need to be perfect, so feel free to vary the angle of fence sections by up to 25 degrees if terrain requires it. If the object you are protecting runs roughly parallel to the prevailing wind, your fence should still remain perpendicular to the wind, not the area you are protecting. Lay several shorter fences bisecting the wind direction at an angle upwind of the object. With winds less than 20 mph, 90% of blown snow will stay below 4 feet (1.2m). In winds of less than 45 mph, 70% of the blown snow stays below 4 feet (1.2m). Estimate the height you will need based on records of wind speed in your area. For most projects, you can multiply the height of the fence by 12, and extend the length of the fence by this amount in both directions. This makes up for the fact that the ends of the fence are less effective at blocking snow, since wind wraps around them. If you need maximum protection, multiply the height of the fence by 20 instead. For example, if you are building an 8-foot (2.4m) fence, extend it by 100 feet (30.5m) past the protected area in both directions. If you are protecting a busy road, play it safe and extend each side by 200 feet (61m) instead. If you don't need full protection, you can compromise to save money or space. Just make sure the total length of the fence is at least 25 times the fence height. Any shorter than this and the wind can wrap around to the center from both ends, making the fence even less effective. A snow fence's job is to slow the wind enough to deposit the snow in a drift downwind of the fence. This means that a fence too close to the area you want protected will actually make the problem worse. As a general rule, a snow fence will quickly cause a drift up to a distance 20 times the height of the fence, so this is the minimum distance you want between the fence and the protected object. If enough snow builds up, the drift will then slowly extend to a distance 35 times the height of the fence. Install the fence at this distance if you need to keep the area completely clear of snow in all conditions. For example, an 8 ft (2.4 m) fence should be placed at least 160 ft (49 m) from the area you want clear. If it is vital to prevent even shallow snowdrifts (on a busy road, for instance), install the fence at least 280 ft (85 m) away. Measure this distance parallel to the wind. If you do not have enough space, look for a less porous fence (with smaller or fewer holes). These numbers are based on a 50% porous fence. The drift from a 25% porous fence maxes out at about 24 times the fence height instead of 35 (with the downside that less total snow is blocked). As a rule of thumb, an 8-foot (2.4 m) tall fence should protect an area with up to 29 inches (74 cm) of annual snowfall. It may handle much more snow in areas where low wind or dense snow reduces the horizontal distance snow can travel. If you're not sure whether that's enough, consider contacting a government office (such as the Natural Resources Conservation Service in the U.S.) for a recommendation specific to your area. Taller fences are much more effective: one 8-foot (2.4 m) fence blocks about as much snow as five rows of 4-ft (1.2 m) fencing. However, multiple rows of fences may be necessary in extreme weather, or if you prefer short fences. To calculate the spacing between rows, multiply the fence height by 30. This prevents the drift from one fence from burying the one below it. For example, two 4-ft. (1.2 m) rows of fencing should be placed 120 ft. (36m) apart. Place the rows closer together where the wind travels up a steep slope, and place them farther apart on steep, downhill slopes.
Summary: Decide upon the areas where you want to reduce snow. Research the direction of prevailing winter winds. Determine the length of the fence. Calculate the distance between the fence and the protected area. Decide on the fence height. Consider multiple rows of fencing.

In one sentence, describe what the following article is about: This might seem obvious, but it is such a vital prerequisite that it is well worth mentioning. You will be able to convince the producers that you are perfect for the show only if you can demonstrate a thorough knowledge of what happens on the show and what it takes to do it. While there are not too many restrictions, there are some basic requirements concerning age, citizenship, and physical condition. Both you and your teammate must be 21 years of age or older by the start of the next season's filming. Both you and your teammate must be U.S. citizens with valid U.S. passports and valid U.S. drivers licenses. You must also be living in the United States. You and your teammate must not be connected to the producers or affiliates of the show. This includes employers, employees, and relatives of employees/employers. You and your teammate must be physically and mentally fit. You must be willing to have a background check performed, and you must be willing to complete a medical history if chosen as a semi-finalist. If chosen as a semi-finalist, you must be willing to take physical and psychological examinations. You or your teammate cannot be a candidate for public office until after the initial airing of any episodes in which they make an appearance. There are some character traits and qualities that are not strictly essential, but you should be able to demonstrate them during your audition if you hope to get put on the show. You should be strong-willed, outgoing, adventurous, physically adept, mentally adept, adaptable to new environments, and have an overall interesting lifestyle, background, and personality. You need to apply to the show with a specific teammate. Choose someone you know well so that your interactions are more vivid and the relationship appears stronger. You should not be shy or hesitant to talk about relationships openly and in public. This is a show heavily focused on relationships, so a willingness to be open about relationships and other people is important. In general, someone you have a strong bond with and have known for years would be preferable to someone who you are only faintly acquainted with. A sibling, close cousin, parent, child, close friend, spouse, lover, or ex-lover would be a better choice in most cases than a co-worker or a neighbor you happen to greet every so often. Your relationship does not need to be perfect, but in order to make it through the challenges you will face, you should choose someone you can work together with. Online applications are accepted year-round, but if you hope to be on the show during a certain season, you will need to pay attention to when the deadlines are for that season. Casting calls usually begin 8 to 12 months before the projected airing date for the season, and roughly 4 to 6 months before the race is filmed. Open casting calls for a given season usually last 1 or 2 months.
Summary:
Watch the show. Know the basic eligibility requirements. Ask yourself if you have what it takes. Grab a partner. Note any deadlines.