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DESIGN: PARKING STRUCTURES TYPES RIGG
Express Ramp
The Express Ramp, or Type E garage is constructed with large parking levels connected by some sort of external or internal ramp to traverse the different tiers. The Type E garage offers high parking capacities with high peak traffic flow capabilities. The garage is very easy to maneuver . The major downfall of this garage is the ramps that it uses are only used for circulation alone. Vertical circulation can be located anywhere because of the large flat floor pates, although it is always most efficient to use the unusable corners in the garage where cars are unable to park.
Non-parking Ramp with Pedestrian Circulation
Ramps with a max slope of 12% can be a maximum of 30’-0” in length and are not considered an accessible route for pedestrians with disabilities. -See ‘Ramping Transitions’ for ramps over a 10% slope and coordinate with turning radius dimensions where turning occurs on ramping.
Non-parking Ramp without Pedestrian Circulation
Ramps with a maximum slope of 15% have no constraint to a maximum distance, however, are not considered an accessible route for pedestrians. -See ‘Ramping Transitions’ for ramps over a 10% slope and coordinate with turning radius dimensions where turning occurs on ramping.
Ramp Transitions
Where a difference in slope of 10% or more occurs between two sections of surface, a transition slope is required. A transition slope of 1/2 the slope difference must be provided.
On-Ramp Parking
Accessible on-ramp parking can be a maximum of 1:20 (5%). The slope of the ramp should not exceed 6.67% at the most when parking on ramp without accessible parking