658 lines
39 KiB
Standard ML
658 lines
39 KiB
Standard ML
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PRE-BUILDING PLANS
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Before you start building your ramp make sure that you read and understand
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these plans completely. You've got to have a good feeling for what you are
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about to tackle or you will probably end up with a mess. There are some
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important things to consider before you even decide what kind of ramp you are
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going to be building. There is almost nothing worse than starting off on a
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project and finding out half-way through that you're not going to be able to
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pull it off because you've blown-off or forgotten some important step along the
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way.
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This is a big undertaking, don't be embarrassed about asking for a little
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help. Ramps are now popping up all around the country at an amazing rate,
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chances are good that at least one ramp is already being ridden in your
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neighborhood. Go check out a ramp that's already built and see what kind of
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problems the owners have had with it, or get some good ideas for things to do
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with your own ramp. Also don't be too proud to ask dad or some other adult for
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help on the carpentry; every man alive likes to believe he is an accomplished
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builder and will usually jump at the chance to pound a few nails. If you get
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dad to help you, rather than letting the project turn out half-assed under his
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supervision, he will probably do all he can to make it turn out good. Who
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knows, if he really gets into it he might even float a few bucks towards the
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cost of materials. Then, when all the work is done he might appreciate more
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the idea of having this big wooden monster sitting in his backyard. You, on
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the otherhand, should have no problems appreciating this big wooden monster.
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Skate tough or stay in a coma.
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Enough planning, it's time to build some vertical terrain. First of all you
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must decide what your limitations are and how this will affect the ramp you are
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going to build.
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Limitation Aspect #1. Location-probably the most important thing to resolve;
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where are you going to put it? Ramps can virtually be built anywhere. We've
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seen ramps of every description built in backyards, fields, orchards,
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sidewalks, parking lots, rooftops, mountain sides and creek beds. First look
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at the obvious spots, like your own backyard or a tolerant friend's pad.
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Private property with permission is best for obvious reasons. Putting up a
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quarter pipe or lightweight structure is one thing, but sweating out a killer
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ramp only to have someone tell you to take it down is not happening.
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Warehouses, garages and the like are good sites because they are level, indoors
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and away from the elements (cops and neighbors). Check with your city or town
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officials in regard to public lands or park and recreation facilities that
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might be available. It is becoming more common for local governments to take
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interest in the skateboarder's plight and build a public ramp, check into this
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idea with your own.
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Ideally, for a decent sized half-pipe like the one described in this book,
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you will want to build on a fairly large, flat cement surface (patio, parking
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lot, etc.) but a relatively level dirt or grass area will work fine. Be sure
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and check out local ordinances regarding construction, you might need a
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building permit for the ramp you have in mind. Keep in mind that this is going
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to be a permanent structure, once it's done you won't want to think about
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anything but the next session, so make sure your facts are straight before you
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follow through with the construction.
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In most cities, the ordinances require that the structure cover more than a
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certain percentage of your yard, such as, 30% of the available open space. In
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many cases, making your ramp portable (or at least appear so) will help bypass
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many of the requirements, such as building permits, etc. Also, most city codes
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specify that no backyard structure can be higher than the highest point of the
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house. Check into it, once you know what must be done to build your ramp
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legally, you will most likely have to abide by some civil laws as well.
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It is very rare that all surrounding neighbors will put up with extended
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night sessions, trash floating around or boards shooting into their pool or
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pegging their backyard pooch. Because of the brash nature of skating and
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skaters themselves, it is wise to inform your immediate neighbors of the
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possibility of such goings on, and get a feeling for what you can and cannot
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do. Believe me, if you push your limits with them, the ramp will not last long
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because the law will side with them almost every time.
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Limitation Aspect #2. Type of ramp you can afford to build. So you've found
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the perfect spot; some old lady with a ranch outside of town craves the energy
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of youth and has agreed to give you free reign of an acre of land with a nice
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swimming hole and rows of pregnant apple trees, no problems there, but now
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there's the question of materials. What do you have to build with?
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The materials you are able to get your hands on will basically tell you what
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kind of ramp you'll soon be ripping. Unless you have 20 or 30 sheets of
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plywood lying around or a large stack of 2 x 4s you will probably be spending
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close to $1000 for your basic 8' wide, 8' radius transition half-pipe. Plywood
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isn't cheap and even though 2 x 4s do grow on trees they aren't just lying
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around, but there are ways of getting some free wood. Ripping off wood or
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shopping at "the midnight lumber store" can get you busted. We've been hearing
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some real nightmares about young thrashers getting caught with a load and
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getting to see the legal system work first hand. The amount of lumber you'll
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need for your ramp will probably constitute grand theft in most lawbooks so
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watch it. Don't get stopped before you've even started. Check your own
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backyard or garage for wood and ask friends or neighbors if they have any.
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Also, hang around local construction sites and beg for cut-off ends and various
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scraps, every little bit gets you one step closer.
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Wood is expensive if you have to buy it outright, but it's plentiful enough
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that you can find a bargain if you shop around. Check the phone book for
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salvage yards that deal in used wood. Most of the time they'll have all you
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need at a fraction of the cost. You may have to pull a few nails but it's
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worth it. When dealing with these guys try to to bargain for your final price,
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you might save yourself even more bucks by not agreeing to the first price they
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give you.
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Once you have assembled all you can feasibly scrounge, it's time to start
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putting it together. The hard part is over now, you realize your limitations
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and you must now decide what type of ramp you're going to build. You may find
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that because of one thing or another you are limited to building a smaller ramp
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or quarter-pipe rather than a full-blown half-pipe. Don't be discouraged if
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the ramp forecast looks bleaker than you imagined before, almost any variation
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of most big ramp maneuvers can be pulled off on a smaller dimension ramp.
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Also, to the beginning verticalist, a smaller ramp is going to be helpful for
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training purposes and will keep you shredding until you can move up to big
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time. Use what you can to ride what you've got; real skaters ignore
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limitations.
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CONSTRUCTION:
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Banked Ramps
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There is no reason why any skater who craves vert should be deprived of a
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vertical wall or bank to skate. Even if you are flat broke there are things
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you can do. In reality all you need is a 3/4" thick piece of plywood and
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you're in business. Whenever you get the urge to skate a bank just drag out
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that old piece of plywood and "set it up."
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If you can get your hands on some 2 x 4s, try expanding on the banked ramp
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theme by building a frame for your piece of plywood. Starting with a "banked
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ramp" is a good way for the beginning skater/carpenter to get into basic wall
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riding and ramp construction at the same time. Quarter Pipes
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A quarter-pipe is just what it sounds like, a quarter piece of round pipe.
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If you can rustle up at least four or more 4' x 8' sheets of plywood and a
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decent supply of 2 x 4s you can throw together a small quarter-pipe that will
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carry you up to vertical. A cash outlay here will still run around $75 for new
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wood.
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As far as transition from horizontal to vertical goes there are several ways
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of constructing a quarter-pipe. One method is to build an L-shaped framework
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similar to the one shown for the banked ramp, except that you create the curve
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for the transition with 2 x 4s. By cutting and fitting lengths of 2 x 4 into
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place you can make a solid curve and a foundation for the plywood skating
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surface. (Fig. 1) The thickness of the plywood for making this type of ramp
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should be no more than 3/8". Using two or three layers of 1/4" ply is
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recommended here for the optimum transition.
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Another method of quarter pipe construction involves the use of plywood
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templates to form the transition and 2 x 4 cross bracing to support the skating
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surface. If you go ahead with this type of design, using the template method,
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you'll need to look ahead to the plans for building a half-pipe for
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instructions on how to make templates using the string/compass method. (Fig.
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2)
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Regardless of the type of method you use to construct a quarter-pipe, the
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radius of the transition should measure between 6' and 8'. Also because you
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are building a single sided ramp, you'll be pushing into the ramp from another
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surface such as the street or sidewalk. In this case you want a smooth
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connection between the street and where the ramp begins. Try cutting the edge
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of the plywood at an angle, where it will meet the asphalt, before you nail it
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down. Or, slap a thin strip of sheet metal down over the critical area, tack
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it with small nails and finish it off with a length of silver duct tape to
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insure against flesh wounds if you have to slide over it. Half-pipe
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Here are the plans for building the basic minimum structure needed for
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full-on vertical skating (16' wide, 10 feet of flat bottom, 8' transitions with
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a foot of vertical, hence a 9 foot wall). These dimensions are commonly used
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for several reasons. One, plywood is widely available in 4' x 8' sheets and 2"
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x 4" and 2" x 6" studs are usually bought in 8' and 16 lengths. Using lumber
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of these dimensions will add up to a nice 16-footer without wasting cut-off
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ends and creating a lot of unusable scrap. Another reason for the 16-foot size
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is that anything smaller is going to seem too cramped for full-on sessioning.
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Twelve foot is passable, but if you go 12 feet, it's almost easier to stretch
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it out to 16 feet because of those standard lumber dimensions.
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Another point that we should review is that the methods we are discussing
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here for building a skateboard ramp will result in an ultimately sturdy
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structure. One that can be pummeled year after year without so much as
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resheeting of plywood or masonite from time to time. If you have to take short
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cuts because of lack of funds or materials, there are ways to cut back. The
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size of your ramp for starters. Smaller ramp; less wood. There is also a way
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to make your transition templates using less plywood than we discuss here
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without sacrificing too much in the strength department. We'll try to cover
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some of these cost-saving tips as we get to them; otherwise, if you've got the
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materials and the cash, build it big and strong, it'll pay off in the long run.
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Once you have found a site to build on it is important to make sure it is
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close to level. Starting with a bottom framework that is level makes
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everything else fall into place a little easier once you begin building
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upwards. If you're building on an incline or on otherwise shaky ground, you'll
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want to sink 4" x 4" posts at least 2' into the ground (preferably in cement)
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and sticking up high enough at the low end to run a level beam between them.
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(Fig. 3)
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If the ground is soft, build the framing on top of cement pier blocks placed
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at the strategic corners. Posting also lifts the structure off the ground,
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thereby keeping rot and insect damage in check for a longer period.
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Bottom Framework
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This is where the strenth and sturdiness of your ramp lies; the more solid
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your initial framework is, the longer your ramp is going to last. This part of
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the ramp will be completely covered up so make sure that it is solid before you
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move onto the next step.
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It is best to use 4 x 4s for the framework but 2 x 4s will work. Lay these
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in a rectangular bo<EFBFBD> th<EFBFBD> siz<EFBFBD> o<EFBFBD> th<EFBFBD> ramp I<EFBFBD> ou<EFBFBD> cas<EFBFBD> i<EFBFBD> woul<EFBFBD> b<EFBFBD> 10<EFBFBD> of flat
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bottom plus two 8' radius transitions-26 feet long and 16 feet wide. Brace
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this structure with 2 x 4s spaced 6 inches apart under the flat section and a
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foot apart under the transitional areas. For more strength, support these
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bracings with additional 2 x 4s as shown in the diagram. Place the 2 x 4s in
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the frame with the 2" side facing up and sitting flush with the top of the 4 x
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4s. The 2 x 4s will act as a solid base for connecting the plywood to the flat
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bottom section. (Fig. 4)
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Horizontal to Vertical Transitions
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The next step is deciding what radius should be used for the transition from
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the flat bottom to the vertical wall. The shorter the radius, the steeper the
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incline, is the basic law. We chose an 8' radius to a 9' high wall for a fluid
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yet thrustable transition to a foot of "true" vert. Larger ramps have been
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built with as much as a 9 or 10 foot radius. For larger transitions you should
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plan on a higher wall to accomodate some vertical.
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To cut out 8' transitions for your ramp you will need: a sabre saw, a piece
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of string or twine at least 9 1/2 feet long, a pencil and a nail. Make a large
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compass by tying one end of the string to the nail and the other end to the
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pencil at exactly the 8-foot mark.
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By securing the nail at one end (use a wooden stake in the ground if a nail
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doesn't work), you can pull the string taut and draw transitional arc on a
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sheet of plywood, (Fig. 5) (and you thought that geometry had no place in the
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real world).
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Using a half sheet laid down next to the full sheet, you should be able to
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draw one full transition. Using a sabre saw, cut out the template being
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careful to stay right on your pencil line. This is where the smoothness of the
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transition begins. To save time, use the first transition that you've cut out
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as a pattern for the other transition pieces you will need. Or, apply the
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string/compass method using a large piece of cardboard instead of plywood. By
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doing this, you'll have a lightweight pattern that is easy to handle for
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tracing and insures that each transition is the exact same radius.
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You will be able to save on expensive plywood without sacrificing the
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strength of your ramp by cutting transition "ribs." To do this, draw an initial
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8' radius and then readjust your string compass to 9' and draw another arc
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right behind the first one. This will give you a foot wide piece of plywood
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with an 8' radius arc on one side. These 'ribs' are then nailed onto the
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framework to support the middle of the wall without using a whole piece of
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plywood (Fig. 6). Full sheets of at least 5/8" plywood should be used for the
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templates on the four outside corners.
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Connecting Templates to Framework
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Start by placing 4 x 4 posts in each of the four corners of your bottom
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framework. For extra strength sink these 2 to 3 feet into the ground. The
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height of these posts will be determined by how high you want your walls and
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how much vert. Start with posts 10 to 12 feet high; you can always saw off the
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extra length at the top. Use a carpenter's level to make sure everything is at
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right angles and then brace the posts with 2 x 4s.
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Now you're ready to nail the plywood transition templates to the sides of
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your framework. Connect the pieces of your templates together first, so that
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they form one whole 90 degree arc from flat bottom to vertical. Now position
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the completed template flush with the floor section of your framework and flush
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with the 4" x 4" vertical upright post and tack it on. Do likewise around the
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four corners of your framework. Now, for the tricky transition supports in
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between the outer templates, you'll want to build up some 2" x 4" framing that
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you can hang the transition ribs on. It is important here to make sure all
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your transition supports are in alignment with each other. If they're not,
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you'll find out when you start trying to fit in your cross bracing. Use a line
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level to make sure before you start the cross bracing.
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Bracing
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Building the 2" x 4" cross bracing into your ramp framework is an important
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step because they supply the main support, as well as the nailing studs for the
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plywood skating surface. The strongest method is to notch out the plywood
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templates to accomodate a 2" x 4" cross brace so that its edge is flush with
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the ply edge.
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Make a notching "pattern" by using a full transition and tracing the end of a
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2 x 4 onto the template. Do this at 6" intervals at the bottom of the
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transition and continue up the wall. Once you are past the impact zone (the
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lower 2/3 of the transition) you can increase the distance between notches to 8
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to 10 inches.
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By making a notching pattern, either of cardboard or plywood and tracing it
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onto each of the transition templates, you'll be sure that the cross bracing is
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straight from one side of the ramp to the other and more importantly, flush
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with the curve of the transition template. Cut out the notching with sabre saw
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and lay in the 2 x 4s.
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These are plans for the framework of a basic half-pipe. Before you cover
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with plywood there are some things you might want to think about adding to your
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ramp. With the addition of stairs, vertical extention, coping, roll-out decks
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and canyons you can turn this into a completely raging structure. Once the
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plywood has been layed on ramp do your best not to even think about taking it
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back up. Decide which extra features you want to add now and then move on
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towards the end. Besides being a complete hassle, pulling up a sheet of
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plywood after its been nailed down is a great way to waste it. Tombstones &
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Extenstions
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A "tombstone" is really just an extension of the vertical wall of your ramp.
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Having some extra vertical footage on one side (or both sides) of your ramp is
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nice for getting those extra gnarly sensations, there's nothing like a
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frontside grind on top of a 12-foot wall with 3 1/2 feet of vert. A tombstone
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will also give you that extra launch needed for airs and other bio tricks that
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require an extra speed thrust.
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Building a tombstone into your ramp framework is easy. Just extend your wall
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supports above the ramp lip for as much vert as you think you can handle, brace
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it up and ply it along with the rest of the ramp.
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If you want to add a tombstone to an already existing ramp, it's a little
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tricky because you'll want to tie the extension into the subframing for max
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strength. Do this by prying up the roll-out deck, adding supports where needed
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and secure solidly to the existing framework behind the ramp wall. A good
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place for an extension is on an edge or one corner of your ramp, because its
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easier to brace there. Once it is in place you'll be able to use it to get
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good speed lines on the opposing wall of the ramp.
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Canyons and Rollout Decks
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Rollout decking is a must for any ramp. Most regulars will drop off the lip
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from the axles or tail or just simply roll in from the top decking. It is also
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much safer to ride with a rollout deck because you won't go over the side on a
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miscalculated layback air or rock 'n' roll. To add on to your existing ramp,
|
|||
|
just build a basic boxlike framework behind the transitions and cover with used
|
|||
|
ply.
|
|||
|
|
|||
|
Roll-in canyons are sometimes rather difficult to install once your ramp has
|
|||
|
been completed. The optimum channel width is 3' wide, manageable yet
|
|||
|
challenging enough for ollie/airs and channel plant type maneuvers. A 6 ft.
|
|||
|
roll in radius is desirable. This allows you to comfortably drop into the meat
|
|||
|
of transition. Learning fakie tricks on the wall opposite the canyon is easier
|
|||
|
without having to start from a fakie rock 'n' roll position all the time.
|
|||
|
|
|||
|
Build a channel opening just like a regular transition except upside down.
|
|||
|
Start by cutting two 6' radius transition 'ribs' out of some scrap ply. Fit
|
|||
|
them in on either side of your channel gap so that they flush up against the
|
|||
|
underside of the plywood near the top of the transition and under the rollout
|
|||
|
platform. Nail the ribs to the framework of your ramp, 2" x 4" cross bracing
|
|||
|
in between, and you're ready to ply down (Fig. 7).
|
|||
|
|
|||
|
Coping
|
|||
|
|
|||
|
Coping applications is a must for any skate ramp. One of the best things
|
|||
|
about coping is that it keeps the edge of your ramp from getting splintered and
|
|||
|
ground up. Not to mention making a ramp extra grindable with less hangups.
|
|||
|
Materials for coping are fairly plentiful as well as various in accordance with
|
|||
|
different tastes. Here's a quick rundown of some of the more common cope.
|
|||
|
|
|||
|
PVC plastic piping seems to be quite popular, plentiful and cheap. It
|
|||
|
provides a good sliding grind with or without truck protection and is fairly
|
|||
|
easy to install. Rip a length (at least 4') of 2" PVC pipe right down the
|
|||
|
middle and you'll have two equal halves that you can work with. Drill small
|
|||
|
holes for nails or countersink screws and secure it to the lip.
|
|||
|
|
|||
|
Real pool coping is, naturally, an excellent choice for a ramp lip. It gives
|
|||
|
you that extra bite and just has a more comfortable feel to it. Some skaters
|
|||
|
have managed to salvage enough blocks from dirt filled or destroyed pools to
|
|||
|
edge their ramps with, otherwise you can sometimes buy blocks at a pool supply
|
|||
|
outlet or masonry yard.
|
|||
|
|
|||
|
Lately we've been seeing some other variations on the coping theme. Angle
|
|||
|
iron, which is iron bar shaped in a 90 degree angle, has been showing up on a
|
|||
|
few ramps. It is easy to apply, provides an ultra durable lip cap that will
|
|||
|
last the lifetime of three or four ramps, if not forever, and provides a super
|
|||
|
slippery edge for plastic and metal to metal grinding. Arguments against using
|
|||
|
iron for cope is that it doesn't grab well on handplant maneuvers and it hurts
|
|||
|
a lot more than something like PVC if you slip and slap your shin against it.
|
|||
|
But, you only live once.
|
|||
|
|
|||
|
Stairs & Ladders
|
|||
|
|
|||
|
You're going to want to be able to get to the rollout deck of your ramp,
|
|||
|
without running up the wall everytime. Stairs are ideal, but they are also a
|
|||
|
bitch to build right. Ladders are not as stylish but it doesn't take much
|
|||
|
expertise to build one. All you need is two 2" x4"s (minimum size for support)
|
|||
|
the same height as your ramp and about ten short pieces for steps. Support the
|
|||
|
long pieces and nail in the steps at whatever distance you feel comfortable
|
|||
|
with. If you're still hell-bent on stairs go to the library and check out a
|
|||
|
book on carpentry, you should be able to find plans and put together a mean
|
|||
|
staircase.
|
|||
|
|
|||
|
THAT IMPORTANT FIRST LAYER
|
|||
|
|
|||
|
Let's recap a few strong points that we've already covered. Before you even
|
|||
|
think of applying the first layer of plywood you should have solid
|
|||
|
reinforcement in the framework and crosspieces of the flat, transition, and
|
|||
|
vertical sections of the ramp. The transition should have rigidly supported 2"
|
|||
|
x 4" cross members spaced, at the most, 6" apart. The floor of the ramp should
|
|||
|
be just that: as close to a solid unit as possible. The optimum for this flat
|
|||
|
bottomed section would be to build almost exclusively from lumber like a
|
|||
|
redwood deck or patio.
|
|||
|
|
|||
|
Another way to attain a completely rigid ramp floor is to construct it like
|
|||
|
the floor of your house with a cement block foundation supporting a solid
|
|||
|
framework structure and the entire flat area covered with 3/4" - 1 1/4" thick
|
|||
|
plywood. The next time you see a house under construction, stop and check out
|
|||
|
how the floors are made. It is a simple framework, with HEAVY DUTY plywood on
|
|||
|
top. You'll want your floor as inflexible as possible.
|
|||
|
|
|||
|
If your transition and vertical cross members are into notches in the
|
|||
|
transition templates, make sure they are solidly secured at each notch point.
|
|||
|
Get on the side of the ramp and sight down the length of the framework. This
|
|||
|
is important because you want the first layer of plywood to flush on each cross
|
|||
|
brace to achieve a flowing, 'kinkless' transition.
|
|||
|
|
|||
|
There are a few things to keep in mind when designing the supporting
|
|||
|
framework: 1) Floor area plywood pieces must always run lengthwise with the
|
|||
|
grain running in the direction of the skating (coping to coping). This means
|
|||
|
that the braces under these pieces should be positioned such that the plywood
|
|||
|
can be fastened lengthwise along the edges to these supporting braces. 2>
|
|||
|
Where two pieces of plywood meet on the transitions there tends to be a certain
|
|||
|
amount of straightening of the pieces in the seam area because there are no
|
|||
|
internal shear stresses set up in the wood to hold it down. To remedy this, I
|
|||
|
would suggest placing extra support brace cross members on either side of the
|
|||
|
seam supporting cross members to help hold down the edges of the plywood into a
|
|||
|
smooth curvature. 3) If you choose to construct the floor of the ramp with
|
|||
|
lumber decking or heavy duty 1 1/4" plywood, you will only need, at the most,
|
|||
|
one layer of 3/8" on top of that and it should last a lifetime. With this in
|
|||
|
mind, design the transition so that the layers of ply stack up to the height of
|
|||
|
this single layer on flat. There's no use in putting three or four layers on
|
|||
|
top of a perfectly solid floor. 4) Get out the old geometry book and calculate
|
|||
|
the surface distance from the top of one side of the ramp to the top of the
|
|||
|
other. This will help you determine how much plywood you will need and it
|
|||
|
should give you an idea of the most efficient, economical way to lay it down on
|
|||
|
the framework to get the best use of the wood.
|
|||
|
|
|||
|
Once you have achieved a strong, rigidly secured supporting framework, you
|
|||
|
are ready to apply the all important first layer.
|
|||
|
|
|||
|
Plywood is constructed with cross-grained layers of wood and therefore has
|
|||
|
its strength in the lengthwise direction, because there are more plys running
|
|||
|
in this direction within the piece of plywood. The same principle can be used
|
|||
|
in surface construction of your ramp by alternating each layer of 3/8" thick
|
|||
|
plywood on your ramp: Make the first layer run lengthwise, the second layer
|
|||
|
crosswise and the last layer lengthwise again. This will give the best
|
|||
|
strength and stability to the riding surface.
|
|||
|
|
|||
|
If your ramp has a tight transition design you may have trouble bending the
|
|||
|
pieces of plywood (especially lengthwise) into the transition without cracking
|
|||
|
or breaking them.
|
|||
|
|
|||
|
To check for this problem, lay your plywood pieced down on the ramp so that
|
|||
|
half are on the floor and half on the transition. Now, <HI>gently apply steady
|
|||
|
pressure to the piece. If it can be flexed all the way down without stress
|
|||
|
fracturing, then move it to the transition and try it again. Here you may hear
|
|||
|
a few creaks and groans as you ease it into place, but don't worry unless it
|
|||
|
really sounds gnarly. Whatever you do don't shove it down or have some idiot
|
|||
|
stamping on it to jam it in place, it will break instantly. If the pieces of
|
|||
|
plywood cannot be eased down gently and steadily into place without them
|
|||
|
screaming in pain, then you'll have to soak them first to get them to comply.
|
|||
|
|
|||
|
Do this by forming a shallow, flat bath out of a plastic tarp and soak the
|
|||
|
wood for a day under water. Make sure you are using exterior grade plywood if
|
|||
|
you do this. A way to get around this problem if you are buying new plywood is
|
|||
|
to look around for fresh, still damp exterior plywood at the hardware store or
|
|||
|
lumber yard and purchase it the day you plan to surface your ramp. Bring it
|
|||
|
straight to the ramp site and apply it. You should have no trouble at all
|
|||
|
doing it this way.
|
|||
|
|
|||
|
Make sure they are all positioned correctly and parallel. Now use dry wall,
|
|||
|
sheet rock type, screws to secure down the plywood.
|
|||
|
|
|||
|
It is crucial here to get this layer tightly secured and fitted against all
|
|||
|
support members in the flat area and the transitions of the framework. To do
|
|||
|
this now on the transitions, the screws must be applied in horizontal rows
|
|||
|
working from the bottom of the sheet to the top. Do not merely tack down the
|
|||
|
corners while holding down the sheet, then put screws in at random. This will
|
|||
|
result in a poor fit to the transition. Each row of sheets must be applied in
|
|||
|
step from the floor to the top of the ramp for the best fit.
|
|||
|
|
|||
|
Make sure you pay attention to details during this first layer application.
|
|||
|
Seams should be flush, with corners all joining at a point; sheets with cracks
|
|||
|
and defects should be placed facing down and in the outer corners of the ramp.
|
|||
|
Your strongest pieces should be put on the middle transition area.
|
|||
|
|
|||
|
Sheets placed on crooked or gaps left between sheets will cause a compounding
|
|||
|
problem that will magnify as you go about laying down the rest of the first
|
|||
|
layer. Don't be conservative with screws. The more screws you use, the closer
|
|||
|
the plywood will assume your intended transition, and the smoother and more
|
|||
|
solid will be your ride. Make sure all screws go into brace supports. If
|
|||
|
there appear to be any soft spots, then replace that piece or build up more
|
|||
|
supports and bracing behind it.
|
|||
|
|
|||
|
FINAL TOUCHES
|
|||
|
|
|||
|
The second, third and each successive layer of plywood should be alternated
|
|||
|
or criss-crossed when applied. It will be much easier to lay these alternate
|
|||
|
layers but remember to line up all the sheets so that they are parallel and fit
|
|||
|
well together at the seams. Try not to align the seams of the second layer
|
|||
|
over the seams of the first, in fact stagger it as much as possible for maximum
|
|||
|
strength.
|
|||
|
|
|||
|
Check the smoothness of the surface, use sandpaper to smooth out any spots
|
|||
|
where there might be splinter action. Check out where the sheets of plywood
|
|||
|
meet each other, check for nails or screws sticking up and for uneven surfaces.
|
|||
|
Check out the supports, stomp on the ramp and make sure it's solid, give it a
|
|||
|
good enough beating that you can be sure it's not going to come apart on you.
|
|||
|
|
|||
|
Now that you've completed the basic structure, you may want to session it for
|
|||
|
a few days to get that initial buzz out of your system. For all intents and
|
|||
|
purposes you are done, however, if you still have the funds there are some
|
|||
|
things you should do to protect the surface and insure your ramp's long life.
|
|||
|
The dumpings of winter rain and snow and the scorching summer sun on some poor
|
|||
|
ramps can deteriorate all that nice wood fast. A little preventive medicine in
|
|||
|
the form of surface protection is going to go a long way to preserve your
|
|||
|
riding surface.
|
|||
|
|
|||
|
Painting is the cheapest way to protect your ramp's surface, not to mention
|
|||
|
giving you a chance to personalize it with your art skills. Your basic enamel
|
|||
|
(water base) exterior paint works best because it soaks in and dries fast. You
|
|||
|
should apply two thin coats rather than one thick coat, letting the first one
|
|||
|
dry before applying the second. This will prevent the surface from becoming
|
|||
|
slippery.
|
|||
|
|
|||
|
Water sealant can be added to the layer directly beneath the top layer. The
|
|||
|
top layer can be coated on both sides and edges.
|
|||
|
|
|||
|
Allow everything to dry for at least 24 hours before applying the top layer
|
|||
|
to the ramp. This method works well with masonite and will keep water from
|
|||
|
seeping in from behind during the wet months.
|
|||
|
|
|||
|
One of the best surface coverings is SPAR urethane. This will make your
|
|||
|
plywood or masonite top layer superfast and ultra-endurable. Apply two light
|
|||
|
coats then one heavy coat, allowing it to drip into all the cracks and seams of
|
|||
|
the surface layer. About 3 cans will do the job for a 16' wide ramp.
|
|||
|
|
|||
|
An expensive route, but one that, if done right, will stay for years is the
|
|||
|
application of 1/8" masonite shower wall on top of a layer of masonite or very
|
|||
|
smooth, high grade plywood. Shower walling is a thin, easily bendable, epoxy
|
|||
|
coated masonite that is 100% waterproof, and requires no screws or nails to
|
|||
|
apply. There are dozens of surface designs available in any bathroom supply
|
|||
|
section at any hardware store. To apply this wonder surface you will need
|
|||
|
ample amounts of epoxy-base glue, such as linoleum glue, or any strong
|
|||
|
industrial adhesive. Slap liberal coats onto each sheet and press with a
|
|||
|
rolling pin into place on top of your top layer. Remember, this is a surfacing
|
|||
|
technique, NOT a support layer. Shower wall will not increase the strength of
|
|||
|
your ramp at all. You must make sure your underplys are very strong and smooth
|
|||
|
before applying shower wall. Once applied, you will have the hardest, fastest,
|
|||
|
most impregnable surface known at this point in ramp construction.
|
|||
|
|
|||
|
NOTE: Any of the sealing methods must be done thoroughly so that water
|
|||
|
cannot seep under the top layer. When this happens, the moisture will stay in
|
|||
|
between the plys because the sealant won't allow the top layer to breathe, thus
|
|||
|
allowing it to dry out. The moisture will cause rot and mildew in the wood and
|
|||
|
you'll have to tear it up.
|
|||
|
|
|||
|
Now you have your ramp. Our best wishes go out to you and your new
|
|||
|
structure, may it be a long-term high-energy affair. If you have done the work
|
|||
|
right, shown patience and not blown anything off, then all that's left is the
|
|||
|
ride. Skate unconventionally but stay safe.
|
|||
|
|
|||
|
OWNING YOUR RAMP
|
|||
|
|
|||
|
Legality
|
|||
|
|
|||
|
If you have dealt with the proper legal channels as mentioned in the
|
|||
|
beginning of this booklet and your ramp meets local construction ordinances,
|
|||
|
etc., then you should have little to worry about, the law cannot get you unless
|
|||
|
someone makes a complaint. As mentioned before, your neighbors are the ones
|
|||
|
who can put a legal stop to your ramp riding. Bear down and do your best to
|
|||
|
avoid offending them and things will go much smoother for you.
|
|||
|
|
|||
|
If the ramp is up by a neighbor's fence, put up some kind of catch netting to
|
|||
|
stop flying boards. If it is prone to be an eyesore, then paint the ramp a
|
|||
|
suitable color or nail paneling around the sides and back. The neighbors may
|
|||
|
complain about the noise when the ramp is being skated. This noise comes from
|
|||
|
underneath the transitions. You can dampen this noise by stuffing foam rubber,
|
|||
|
styrofoam or insulation in the back between the support braces. Even a few old
|
|||
|
sleeping bags tacked in place will help.
|
|||
|
|
|||
|
Set a time limit for sessions and watch the volume of music if you play it.
|
|||
|
A lot of neighbors don't mind the noise but after twelve hours of skating and
|
|||
|
rocking most non-skater's nerves will grow thin. Put out a trash can for
|
|||
|
litter.
|
|||
|
|
|||
|
Liability
|
|||
|
|
|||
|
It is very important to realize that you are liable for any injuy that occurs
|
|||
|
on your property which includes your ramp. People in this country have a very
|
|||
|
selfish tradition of blaming someone else if they take a risk and get hurt.
|
|||
|
They try to justify their injury by making someone else pay the price in cold
|
|||
|
hard cash. With the amount of money-hungry lawyers out there who specialize in
|
|||
|
lawsuits, charging no fee unless they win, it's no wonder that everyone seems
|
|||
|
to be getting sued. To avoid this fate yourself, you had better make it clear
|
|||
|
to all skaters who ride your ramp that they are riding AT THEIR OWN RISK. Post
|
|||
|
a sheet of ground rules easily visible from the ramp. This will minimize the
|
|||
|
chance that you and your family will be liable. Make everyone wear all safety
|
|||
|
equipment, especially helmets. Many ramp owners require skaters to sign "Skate
|
|||
|
at your own risk" type release forms to exclude them from liability. These
|
|||
|
rules may seem tiresome and a pain but you are responsible for enforcing them.
|
|||
|
It is much better to skate safe, and have your friends do so, than to be
|
|||
|
battling in court or living in the streets.
|
|||
|
|
|||
|
Finally, don't let things get out of hand around the ramp. You, as the
|
|||
|
owner, are responsible for keeping it under control, even if it means telling
|
|||
|
some out of line skaters to take off. Many times a new ramp will attract a
|
|||
|
crowd you don't even know who make themselves right at home by barging into
|
|||
|
your house for a drink, pissing in your yard or severely thrashing your ramp
|
|||
|
and property in a frenzied skate session. It is your right as the owner to
|
|||
|
determine the who, when, where, and what of your ramp so don't let yourself be
|
|||
|
pushed around, make decisions and stick by them.
|
|||
|
|
|||
|
REHABILITATION OF OLDER RAMPS
|
|||
|
|
|||
|
There will probably come a point after hours of sessioning and multiple
|
|||
|
weather beating days, that you will have to make repairs on your ramp. If you
|
|||
|
have taken care and preserved the wood with a protective layer then the repairs
|
|||
|
should only be minor, usually soft spots, kinks or spongy areas.
|
|||
|
|
|||
|
A common "solution" to these problems seems to be slapping on more and more
|
|||
|
layers of plywood until it "goes away." This can be very expensive and will
|
|||
|
hardly ever work in the long run. We've seen the same weak spot resurface in
|
|||
|
the exact same place though more than 10 layers had been put on the ramp in
|
|||
|
question.
|
|||
|
|
|||
|
The way to fix these defects is by getting to the root of the problem, like
|
|||
|
when you go the dentist: when you have a cavity, he makes sure he gets to the
|
|||
|
bottom of it before he starts filling it. If he doesn't, then you still have
|
|||
|
the problem. Most of the troubles on the riding surface are due to weak or
|
|||
|
kinked transition structures, look behind the the ramp if possible, where the
|
|||
|
problem spot lies. You may find that the cross members are broken or weak at
|
|||
|
that point, and need to be braced. If it is possible to do this without
|
|||
|
removing any plywood, simply brace the bad cross piece with extra 2 x 4's or
|
|||
|
steel brackets. Often the bad spot is impossible to get to from behind. In
|
|||
|
this case, remove all layers of plywood over the spot and support the frame
|
|||
|
work underneath. Always replace the plywood with new layers where the soft
|
|||
|
spot has been repaired.
|
|||
|
|
|||
|
When a plywood related surface problem develops, the best solution is to
|
|||
|
replace that sheet. A lot of funky methods are used to avoid doing this, like:
|
|||
|
cramming the spot with wood chips and duct-taping it closed (works for about
|
|||
|
three runs), nailing a scrap of tin over the spot (usually more death than the
|
|||
|
spot by itself), or chiseling out the piece of plywood that contains the spot
|
|||
|
and nailing in another piece (extremely weak). Replace the entire piece of
|
|||
|
plywood whenever possible. If the spot is small and replacing the whole sheet
|
|||
|
just seems like a waste, then there are a few alternatives. The best thing to
|
|||
|
repair a hole or soft spot with in this case is something resin-based like
|
|||
|
fiberglass. Chip the bad area open with a chisel and clean it out good. Now
|
|||
|
apply a filler like bondo or fiberglass layers to bring the hole up to the
|
|||
|
surface of the rest of the piece of plywood. Once this is dry, lay a piece of
|
|||
|
fiberglass over the whole area to make it smooth. Be careful when using resins
|
|||
|
to fix holes and soft spots, they set very fast when it's hot, and you need
|
|||
|
acetone to get the stuff off tools or your hands. Fiberglass sticks well to
|
|||
|
the wood on ramps and is far stronger than plywood so it will hold up well
|
|||
|
under punishment.
|
|||
|
|
|||
|
Another ramp repair method that has been suggested is using a mixture of
|
|||
|
Elmer's glue and fine sawdust. Once this stuff dries it can be easily sanded
|
|||
|
and smoothed flush.
|
|||
|
|
|||
|
Once again, when making surface repairs in the ramp, get down to the root of
|
|||
|
the problem. Most soft spots, kinks, and other defects are caused by flexible
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or weak supporting structure (i.e., bent, cracked, or broken cross members), so
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this is where the bracing and additional support is needed. Do not neglect to
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repair all spots before they become dangerously large.
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Build strong and skate long.
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