Old Castle Cable Trench
Oldcastle Infrastructure offers a solution for cable distributions and management with a three-sided trench. Trench components have superior chemical resistance, strength, low water absorption, and substantial freeze/thaw resistance. Trenches are available in a variety of dimensions as well as custom sizing. Our trenches provide durability, convenience, and a maintenance-free finish. Oldcastle Infrastructure provides cable trench solutions for easy access to communication, fiber optic, control, signal, power cables, and wiring. Trench can also be used in conjunction with catch basins, inlets, and piping for storm water management.
The Plastibeton® cable trench is a trusted system by power, utility, railroad, and transit companies throughout North America. Made of a unique, patented High-Density Polymer Concrete, the cable trench system offers flexibility and strength, as well as exceptional resistance to freeze/thaw conditions. The Plastibeton® Channel System provides an outstanding H20 load rating at any point. It is designed and tested to exceed industry standards, and with an unmatched strength to weight ratio, Plastibeton® reduces installation costs and is the safer cable trench choice.
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Underground Vaults
Underground vaults or enclosures are used in all fiber optic networks that use GPON networks for FTTH or Fiber To The Home Deployments that are private or federal funded.
Underground vaults are used to link fiber optic cables or power, communications cables placed inside innerduct conduit.
The standard is to place an underground OSP polymer concrete vault or underground enclosure every 500- 1000 feet. Inside the vaults you will find fiber splice cases , the innerduct and “slack loop” that is excess fiber optic cable or other power or communications cable. This excess cable is to normally used as expansion ot to use if a cable is damaged between the vaults.
The size of the underground vault depends on several issues that range from current requirements to future proofing the fiber network. Typically you have one or more (HDPE) innerducts ranging in size from ¾ inch to 4 inches that are placed between vaults every 500- 1000 feet. The underground vaults range in many sizes and load or traffic ratings listed below.
Inside the vault you will find innerduct that is placed at each
In campus or enterprise environments these vaults can be more numerous in density that long linear fiber cable runs.
American Data provides our valued customers many different sizes depending on the network topology or design.
Handholes are underground vaults that provide access to fiber optic cable and other utilities for splicing & repairs.
They are often called pull boxes, splice boxes, underground enclosures or vaults.
Four basic decisions are required when ordering handholes:
- Material
- Tier Rating
- Size
- Shape
Materials
Polymer Concrete
- Constructed of sand, aggregate and a bonding material, usually resin
- Heaviest for its size; requires a backhoe & crew to set and move
- Extremely durable and cost effective but shipping cost could be a factor
- Resistant to water, chemicals and UV
- Non metallic, non-conductive
- Rated for Tier 15 to 22
Fiberglass Reinforced Polymer (FRP)
- Constructed of high-strength fiberglass & resin for the box, then bonded to a polymer concrete support ring & lid
- Lighter than polymer concrete by about 30%
- Can be moved by two people but will require a backhoe & crew to set
High-Density Polyethylene (HDPE)
- The lightest weight – typically 50 – 75% lighter than polymer concrete
- Easily managed by two people to move and set
- Despite its weight, still constructed to have up to a Tier 22 rating and with a few modifications can achieve an H-20 rating
- HDPE material can be drilled, allowing for modification in the field
Advanced Composite Material
- 40 to 60% lighter weight than polymer concrete
- Can be easily moved in a pickup truck and set by two people
- Drillable material
- Stackable for shipping
Tier Rating
Light Duty: Pedestrian traffic only
Tier 5: Sidewalk applications with occasional non-deliberate vehicular traffic
Tier 8: Sidewalk applications with non-deliberate vehicular traffic
Tier 15: Driveway, parking lot and off-roadway applications mostly free from heavy vehicle traffic
Tier 22: Driveway, parking lot and off-roadway applications with occasional non-deliberate heavy vehicular traffic
AASHTO H-20: Deliberate vehicular traffic applications
Tier rating information and image courtesy of Martin Enterprises.
