6.0 Rigging-Strength Ratings and Safety Factors (cont’)

6.2 Structural Rating Overview

Designing a safe structural array is ordinarily a very complex process best left to experienced profession- als. To make EVA systems both safe and easy to use, Electro-Voice engineers have chosen to treat EVA arrays as a single unified structure rather than individual components. All the complex factors listed below have been taken into account to design a rigging system strong enough to maintain a minimum 8:1 safety factor up to a maximum suspended column weight of 720 lb (327 kg) at any elevation (tilt) angle available on either of the two EVA grids. The following is a short synopsis of the considerations involved:

There are two independent strength ratings that, together, give a complete description of the overall struc- tural capabilities of any loudspeaker system; which are:

1.The strength of each individual enclosure rigging point; which is the combined strength of the internal rigging straps, external tie plates, bolts and enclosure.

2.The total strength of the overall array; which is a function of the combined forces from all of the rigging points acting on the rigging components and the array as a whole.

For grids, there are also two independent strength ratings that, together, give a complete description of the overall structural capabilities of the grid; which are:

1.The strength of each individual grid rigging point; which is the combined strength of the bolts, grid side arms and spreader bars.

2.The total strength of the overall grid; which is a function of the combined forces from all of the rigging points acting on the rigging components and the grid as a whole.

In any system, the forces acting on each loudspeaker (on each individual rigging point and on the overall enclosure) and the forces acting on each rigging accessory (grids and spreader bars) will vary with each array configuration. Determining those forces throughout an array requires complex mathematical cal- culations. Electro-Voice engineers have therefore defined a set of simplified structural-rating guidelines for EVA systems that eliminate the need for complex calculations. The interaction of the complex forces throughout EVA arrays was analyzed using a combination of destructive testing and computer modeling to develop this set of conservative guidelines, presented below, to enable a rigger to immediately determine on site whether or not an array is safe without having to make weight-distribution calculations.

26

Electro-Voice® EVA Series User Manual

Page 25 Page 27
Page 26
Image 26
Garmin EVA-2082S/920, EVA-2082S/906 Rigging-Strength Ratings and Safety Factors cont’, Structural Rating Overview
Page 25 Page 27

EVA-2082S/920, EVA-2082S/126, EVA-2082S/906 specifications

Garmin has once again solidified its reputation for innovation and quality with the release of the EVA-2082 series, specifically the EVA-2082S/126, EVA-2082S/920, and EVA-2082S/906 models. These advanced devices blend cutting-edge technology with user-friendly features, catering to both novice and experienced users alike.

At the core of the EVA-2082 series is the integration of Garmin's proprietary GPS technology. Each model offers enhanced accuracy and reliability for navigation, ensuring that users have access to precise location tracking and real-time updates. The built-in multi-band GNSS capabilities allow for improved satellite reception and performance even in challenging environments, such as urban canyons or dense forests.

One of the standout features of the EVA-2082 series is the vibrant display, which delivers crisp visuals and easy readability in various lighting conditions. With customizable interfaces, users can tailor the information displayed to suit their specific needs, showcasing vital statistics such as speed, distance, and elevation.

The EVA-2082 series also emphasizes connectivity with Bluetooth and Wi-Fi capabilities, enabling seamless integration with smartphones and smartwatches. This connectivity allows users to receive notifications, sync data, and even share routes with other devices, enhancing the overall experience.

In terms of durability, the EVA-2082 models are designed to withstand the rigors of outdoor activities. They are water-resistant and built from high-quality materials that can endure harsh weather conditions, making them ideal companions for hiking, cycling, or other adventures.

A notable addition is the comprehensive navigation features that include preloaded topographic maps, which are essential for off-road exploration. Each device supports route planning and provides turn-by-turn directional prompts, making it easier than ever to explore new terrains confidently.

Battery life is another critical aspect where the EVA-2082 series excels. With an extended battery life, users can enjoy long hours of uninterrupted navigation without the worry of their device dying mid-journey.

In conclusion, the Garmin EVA-2082S/126, EVA-2082S/920, and EVA-2082S/906 models showcase the brand's commitment to excellence in GPS technology. With a robust set of features, superior navigation capabilities, and user-friendly interfaces, these devices are poised to become indispensable tools for outdoor enthusiasts and adventurers around the globe. Whether you're hiking through rugged trails or navigating city streets, the EVA-2082 series ensures you stay on track and ready for your next journey.
Top Page Image Contents