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Alley Bump

Alley bumps were developed specifically to address speeding and cut-through traffic in city alleyways. They slow cars to a stop. There is much community activity in an alley, ranging from bicycle traffic to garage sales, and even neighborhood get togethers. The city of Chicago has 1,926 miles of alleys - the largest in the United States!

 
         
     

Features

Constructed from 100% recycled tires, GNR alley bumps are preformed to ensure a smooth, safe ride. The Alley Bump's flexible design conforms to the contour of virtually any road surface. The bumps are simple to install and can be easily removed for storage or relocation. They are pre-drilled for anchoring spikes or lag bolts. Designed to withstand extreme temperature variations, the bumps are resistant to moisture, oil, and ultraviolet light. They will not warp, crack, chip, or rot.

Molded highly reflective tape ensures that the alley bumps are visible even on a dark night. Cat's eye reflectors further enhance visibility to alert drivers well in advance. The bumps have a channeled bottom to facilitate drainage as well as to cover cabling or piping.

The Alley Bump is available in 4' and 6' lengths, including end caps to protect the bump ends as well as vehicles. GNR rubber alley bumps are covered by a 3 year warranty.

 Alley bumps are: 

  • Made of 100% recycled rubber
  • Long lasting and cost efficient
  • Reduces speed to 1-5 mph
  • High visibility at night
  • Simple installation
  • Product can be installed in sections to create varying lengths
  • Will not warp, crack, chip or rot
  • Can be installed on any road surface
  • Resistant to ultraviolet light, moisture, oil, and extreme temperatures
  • Temporary or permanent installation
  • Channeled bottom for cabling and piping
  • Lowers insurance premiums for lot owners
  • Maintenance free
  • 3 year warranty

 

 

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Installation Locations:

  • Alleyways
  • Side streets
  • Narrow residential streets with hidden entrances

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    Dimensions

     

      Alley Bump Dimensions:

    (L) 4' x (W) 12" x (H) 3" - 51 lb.
    (L) 6' x (W) 12" x (H) 3" - 76 lb.

    Alley Bump End Cap Dimensions:

    (L) 6" X (W) 12" X (H) 3" - 8 lb.

     


     

     

     

     

     
    Technical Specs
     

    Product name:

    Rubber Speed Bumps - 3" thickness

    Models:

    6', 4' lengths

    Product Description :

    1. Material: compression molded composite: 100% recycled rubber and polyurethane prepolymer

    2. Physical properties of the rubber composite: a. Density 0.6 oz/cu in (ASTM C642) b. Durometer Hardness 70A ± 7 (ASTM D2240) c. Tensile Strength 300 psi (ASTM D412) d. Compression deformation 7% at 70psi, 68°F (ASTM D575) e. Brittleness at Low temperature: -40°F (ASTM D746) f. Freeze and thaw when exposed to deicing chemicals no loss after 50 cycles (ASTM C672) g. Coefficient of thermal expansion: 8 x10-5 in/in/°F (ASTM C531) h. Weathering 70 hours at 158°F (ASTM D573) - hardness retained 100% (± 5%) - compressive strength 100% (± 5%) - tensile strength 100% (± 5%) - elongation retained 100% (± 5%)

    3. Available models: 6', 4' lengths

    4. Finishing: Black recycled rubber composite with yellow, durable and reflective, in-molded pavement marking tape

    Components:

    a) 100% recycled rubber from car and truck tires (NR, SBR)
    b) polyurethane prepolymer
    c) cat's eyes reflectors
    d) yellow, durable and reflective in-molded pavement marking tape
    e) molded in steel washers

     
     
    Installation Guide
     
    Components
    • Alley bumps
    • 1/2" rebar spikes for asphalt or lag bolts with metal shields for concrete - available at GNR

    What You Need

    • Gloves, safety glasses
    • Traffic cones, drums or barricades for securing the site
    • Mallet
    • Heavy duty electric drill
    • 1/2" masonry bit and, if installed with lag bolts: a masonry bit required for the metal shields - consult bit size on side of shield
    • A drive socket and power tool for installation of the lag bolts

    The flexible design of the Alley Bump allows the product to conform to the contour of uneven road surfaces and can be installed on both asphalt and concrete.

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    Installations Instructions for Asphalt: Installation of Alley Bumps with spikes
     
    Step 1.

    Drill 1/2" diameter holes in the asphalt through the product's holes.

    Step 2.

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    Drive 1/2" rebar spike (14" long) through the holes in the product.

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    Installations Instructions for Concrete: Installation of Alley Bumps with lag bolts and metal shields
     
    Step 1.

    Use 1/2" or 5/8 lag bolts (5 1/2" long).

    Step 2.

    Drill 1/2" diameter pilot holes through the product's installation holes.

    Step 3.

    Remove the product; re-drill the holes for the diameter and depth required by the metal shields.

    Step 4.

    Install the metal shields, re-position the product and bolt with lag bolts.

    Maintenance

    Alley Bumps require minimal maintenance. Periodically inspect the bolts and tighten if necessary.
     

    Some images of installation locations of the Alley Bump:

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