The FSB enclosure product offering provides improved splice management and access, a variety of modular cable port accessories and increased splice storage density in several housing sizes and capacities. An integrated "basket" provides loose tube storage below the splice trays and keeps tube storage segregated from cable entrance ports and fiber storage on the splice trays.Įach enclosure size includes four cable ports with sealing options that include rubber grommets, compression seals, or conduit fittings while cable tie-down features include single cable clamps, dual cable retention brackets, or central strength member brackets. End Plate Splice Figure 2 Bolted End Plate Splice The end plate column splice is simple to design, detail and construct, thus it is likely one of the most economical splice options. Refer to AISC 341-10 for all seismic detailing requirements. Single fiber splice configurations allow up to three removable splice trays to be mounted into the box. below the splice meet the seismic compactness requirements. The system applies a linear pull on the test specimen at constant applied force until the crimp fails. The ribbon splice configuration utilizes the base of the enclosure as the splice tray maximizing technician access to the splicing area and providing the full enclosure footprint for ribbon routing and splice storage. A crimped terminal or splice is mounted on a test system by securing the terminal in a clamping fixture attached to a tensile testing machine. FSB enclosures can be configured at the time of order for either ribbon splicing or single fiber splicing. These aluminum enclosures are designed for high-density splice storage, with emphasis on proper fiber management and versatility of cable port seals and cable tie-down features. These boxes are well suited as optical cable splice collection points for DAS (Distributed Antenna Systems), MTU (Multi-Tenant Unit) commercial business applications, and MDU (Multi-Dwelling Unit) residentail fiber network applicaitons, to name a few. Various manufacturers offer the ability to include a logo on the box so that anyone digging underground can quickly identify the owner of the pull box and thus know exactly what they’ll find inside.The FSB series of indoor wall mount enclosures are designed for centralized splice-only applications. Most models are also impervious to sunlight, fertilizers and chemicals. They should also be corrosion and impact resistant and manufactured from non-metallic, non-flammable, and non-conductive material. It is essential in most applications that a good underground pull box be strong so that it’s not affected by freeze and thaw conditions. Many underground boxes are painted gray but those made of concrete are simply left the normal gray color inherent to concrete. STEP 2 : Determine if you need a Straight or Splice/Angle/U Pull, as you need to use different formulas. STEP 1 : Determine the size of each raceway you will be using. They are available with and without covers and some models have an open bottom. So you have a 2 straight pull and a 3 angle pull. Stackable concrete boxes with straight sides are durable with load capacities from approximately 8,000 pounds up to 35,000 pounds. Underground Pull Boxes are often used by Department of Transportation workers that require easy access to an underground service, but they can be used in driveways and parking lots as well. They’re available in many sizes to accommodate small bundles of cables or larger ones. They are typically constructed of heavy duty polymer concrete reinforced with fiberglass, but traditional concrete is also a popular choice. These boxes are used to store electrical wiring, fiber optic cable, phone lines, water lines and other wires or cables that are buried underground. Underground Pull Boxes can be used as an equipment enclosure, splice box, or pull box.
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