The minimum requirement for any two-tier bicycle rack should always be 2600mm of clear height. This dimension is based on the size of a bicycle. We allow the internationally recognised size of a 1200mm tall bicycle, this accounts for larger sizes of bikes, ensuring any cyclist can park any bicycle in all available parking spaces.
“We allow the internationally recognised size of a 1200mm tall bicycle”
Stack one bicycle on top of another directly, and this equates to 2400mm of height, however, the design of two-tier parking racks incorporates a high-low stagger on both the upper and lower tiers, this stagger is to prevent handlebars clashing when creating a closer centre to centre distance between bicycles.
This stagger distance must be a minimum of 200mm in order to avoid clashes of handlebars and ensure access. When this 200mm stagger is accounted for, the end result is a minimum headroom requirement of 2600mm.