Car Park & Warehouse Barrier Systems

    

     There are various standards and guidelines governing the use of car park and warehouse barriers. Depending upon the design use for the barrier system, one or more standards or guidelines may be required to be observed.

AS/NZS 2890.1 Parking Facilities

     This standard sets out the minimum requirements for the design and layout for off-street parking facilities, including multi-storey Car Parks. Barriers shall be built to prevent vehicles from falling over the edge of a raised platform or deck of a multi-storey car park including the perimeter of all decks above ground level. They are required wherever the drop from the edge of the deck to a lower level exceeds 600mm. AS/NZS 2890.1 suggests that barriers shall comply with the following requirements;

  1. They shall be designed structurally for the loading requirements of AS/NZS 1170.1.

     B.   If at the end of a parking space, they shall be at least 1.3m high so that drivers backing

           into the space can see the barrier above the rear of the vehicle.

     C. They shall not be made from brickwork, unreinforced concrete or other materials likely to

          shatter on impact.

AS/NZS 1170.1 Structural Design Actions

     This standard states that the horizontal imposed action on barriers required to withstand the accidental impact from vehicles during parking for light traffic areas shall be taken as follows;

                       a) 30kN for barriers; and

                       b) 240kN for barriers at the end of straight ramps exceeding 20m in length and intended for

                           downward travel.

      A light traffic area is defined as a parking area restricted to vehicles not exceeding 2500kg  gross mass. .The impact force shall be distributed over a 1.5m length at any position along the barrier and shall be assumed to act at 0.5m above floor level.

           Building Code of Australia

     The building code states that a continuous handrail must be provided along any walkway if it's level above the surface beneath is more than 1m. The height of the handrail must not be less than 1m above the floor of any walkway.

     Openings in the balustrade must be constructed so that the maximum gap does not allow a 125mm sphere to pass through it. The barrier must not facilitate climbing.

 

Designers of car park barriers should consider the following;

1) The barrier should be capable of withstanding impact loads in accordance with relevant building standards;

2) There is a likelihood for high-frequency, nuisance impacts;

3) Impacts are likely to be perpendicular to the barrier i.e. 90°;

4) There is often pedestrian pathways adjacent to barriers;

5) The barrier is often installed on the edge of a deck with a drop to a lower level;

6) There may be a requirement for the barriers to compliment the architectural features of the car park;

7) Space provided for barriers is often limited in an attempt to maximise car spaces;

8) The barrier should facilitate ease of repair so that disruption to car park users is minimised during periods of repair;

9) A barrier may be required to provide the additional function of restricting access to certain areas

10) The attachment of a barrier should not compromise the structural design of the car park and

11)Impact damage should be confined to the barrier system not the car park structure.

For further information please click on the following download:

Car Park Manual Link   Rhino Snapshot