Rail: Rail Station Design
From MDOT Policy Manual
Platform Slope | Maximum longitudinal slope for at-grade stations | 1.75% |
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Maximum longitudinal slope for underground and aerial,stations | 0.50% | |
Station cross slopes should be flat for safety,
but if required for improved drainage, slope away from platform edge at a maximum cross slope: |
1.00% |
Passenger
Circulation |
Vertical Circulation Elements (VCEs),- Ramps, Stairs, Escalators and Elevators | |
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1. Use of sloping walkways in lieu of ramps and ramps in lieu of elevators where feasible, is acceptable. Note:For a vertical rise less than 8’-0”, elevators and lifts shall be used only when unavoidable due to space constraints. | Less than 12'-0" | |
2. Elevators are required for disabled access within the station for vertical rise greater 12’-0”. Stairs are required as well. | 12'-0" to 16'-0" | |
3. Use paired escalators and stairs. Escalators,shall be the primary for ascent and stairs primary for descent. Note: Escalators may be replaced with primary passenger elevators if LOS analysis yields an average,wait time of 45 seconds or less using not less than 2.5 square feet,/passenger to determine capacity. | 16'-0" to 20'-0" | |
4. Use elevators and escalators. Stairs shall not be considered a means of normal public ascent or descent where the vertical rise between levels exceeds 20’-0”. Note: Escalators may be replaced with primary passenger elevators if LOS analysis yields an average wait time of 45 seconds or less using not less than 2.5 square feet /passenger to determine capacity. | Greater than 20'-0' | |
Vertical Clearance | 1. Minimum headroom over primary stair or escalator measured perpendicularly from edge of tread nosing to underside of ceiling or overhead construction. | 10'-0" |
2. Minimum headroom at ceiling structures such as signage. | 8'-6" | |
Elevators
Note: Elevators shall comply with APTA RT-RP-FS-007-02; ASME A17.1; ADAAG |
1. Minimum queuing in front of elevator doors. | 1.5 x Depth of Cab |
2. Minimum overhead protection for elevator doors exposed to the outdoor with street level landings. | 6'-0" Depth x Width of each cab | |
3. Where primary passenger elevators are required along a primary circulation route, minimum capacity required. | 20 persons, 4500-pound capacity | |
4. All elevator cabs shall be sized to accommodate a 24”x84” ambulance stretcher in horizontal, open position. Provide ADA and gurney elevators in all locations where elevators are warranted. Min capacity of each cab. | 16 persons, 4000-pound capacity | |
5. Minimum door sizes to accommodate wheelchairs, gurneys. | 3'-6" wide x 7'-8" high | |
6. Minimum speed of elevators at passenger,carrying capacity. | 200 fpm | |
Site Walkways | Minimum width | 5'-0" |
Minimum vertical clearance | 8'-0" | |
Pedestrian at-grade crossing minimum width | 12'-0" | |
Through bus stop and Park & Rides | 10'-0" | |
Crossing connecting walkways | 10"-0" | |
Pedestrian tunnels | 16'-0" | |
Walkway track crossing serving primary entrances | 30'-0" |