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Define overpass5/16/2023 ![]() Even as gear gets more capable and therefore more complex, the trend continues toward systems that sip rather than gulp power. Broadcast equipment is much more efficient because the components used are much less power-hungry than those of just a few years ago. Power consumption is less of an issue now than it was in the past. So, even though shrinking the empty weight would provide more “headroom” for equipment, adding more gear might result in more headaches down the road. But many of those solutions involve compromises that could result in increased long-term maintenance costs and reduced working life of the rig. Using aluminum frames, composite materials, different structural components, and even “rivetless” construction can shave hundreds or thousands of pounds from the empty weight of the truck or trailer.įurther weight reductions can be achieved by using lighter-weight cables and racks or installing composite-based furniture. WeightĪlthough truck and trailer weights, like size, are also set by law, there are ways to trim the load. The demands of even smaller scale live event productions have grown almost exponentially, making it difficult for even moderate-size trucks to provide all the necessary components to satisfy customer demands. ![]() For straight trucks, the situation is not much better. So, it should be simple: just get the biggest “box on wheels” legally allowed and then start cabling those racks.īut the reality is that increasingly, a single trailer, even an “expando,” simply isn’t enough – top-tier events now require multiple units to accommodate all the gear and operators necessary. ![]() After all, in most of the world, the maximum dimensions of a straight truck or tractor-semitrailer are set by national or regional authorities and are typically based on practical factors such as overpass heights or roadway widths. You wouldn’t think that size would be a consideration in building a mobile truck. How those factors are managed, individually and collectively, significantly impacts how well a truck performs and how economical it is to run. I realized that unlike that old real estate joke about “location, location, location,” the three most important words for truck designers might be size, weight, and power. But given the size, weight, and power constraints of this proverbial “five-pound sack,” designing even the “perfect truck” would always be a compromise. He was designing a new 53’ (16+ meter) production trailer and was frustrated by the challenge of cramming in all of the technology needed to be “self-sufficient.” It seems, he grumbled, that there are never enough DAs, frame syncs, converters, and the like to satisfy the technical and creative requirements of each show. Not too long ago, I had lunch with one of my mobile truck pals. Unless one really wants to span a bounding box across the antimeridian.įor this reason, almost all of the at Downstream Tools listed tools have convenience features for this.In our latest Beyond the Lens blog post, Tedd Tramaloni, Business Development Manager for Production Switchers and Video Servers, shares his thoughts on a different approach to managing size, weight, and power requirements when designing mobile trucks. Thus, in almost all cases the value of the western edge is smaller than the value of the eastern edge, The antimeridian crosses on its way from the north pole to the south pole the pacific and not much else. In contrast to this, the values for degree of longitude are growing from west to east almost everywhere.īut at the antimeridian the values jumps from +180.0 to -180.0. The value of the southern edge must be always smaller than the value of the northern edge,īecause the values for degree of latitude are growing from the south pole to the north pole, The Overpass API only uses the decimal fraction notation,Ī notation in minutes and seconds is not supported. 0.001 is the longitude of the eastern edge.51.478 is the latitude of the norther edge.-0.001 is the longitude of the western edge.51.477 is the latitude of the southern edge.The order of the edges is always the same: The simplest way to get all data from a bounding box
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