Apta (Draft) Specification For: 30-ft, 35-ft, 40-ft, 45-ft, 60-foot (articulated) Transit Buses

85.4Turntable seating

85.5Padded inserts/cushioned seats

The passenger seats shall be equipped with non-padded inserts throughout the bus.

Alternative

Padded inserts

The passenger seats shall be equipped with vandal-resistant padded inserts throughout the bus (measure to uncompressed surface).

Alternative

Fully cushioned seats

The passenger seats shall be fully cushioned throughout the bus (measure to compressed surface, 150-lb person).

Alternative

Combination padded and non-padded inserts

The passenger seats in the front section shall be equipped with padded inserts and those in the rear (aft of the rear/exit door) shall be equipped with non-padded inserts.

Default

Non-padded seat configuration

The seat back thickness shall not exceed 1in. in the knee room area.

Seating and interior trim shall have features to improve passenger comfort. The seat cushion and back shall be padded with a cellular foam product that complies with the physical test requirements cited in this document and is no less than 1/2-in. thick in areas contacted and loaded by passengers in the normal seated position and shall be covered with vinyl and/or fabric material.

Seats, back cushions and other pads shall be securely attached and shall be detachable by means of a simple release mechanism so that they are easily removable by the maintenance staff but not by passengers. To the extent practicable, seat cushions and pads shall be interchangeable throughout the bus. Materials shall have high resistance to tearing, flexing and wetting.

Alternative

Seating and interior trim shall have features to maximize passenger comfort. The seat cushion shall be supported by springs. The seat cushion and back shall be padded with, a cellular foam product that complies with the physical test requirements cited in this document and is no less than 2 in. thick in areas contacted and loaded by passengers in the normal seated position and shall be upholstered with vinyl and/or fabric materials.

Seats, back cushions and other pads shall be securely attached and shall be detachable by means of a simple release mechanism so that they are easily removable by maintenance personnel but not by passengers. To the extent practicable, seat cushions and pads shall be interchangeable throughout the bus. Materials shall have high resistance to tearing, flexing and wetting.

85.6Drain hole in seats

Provision, such as a small grommeted hole, to allow drainage shall be incorporated into seat insert. (drain through hole – ¼ in. through hole, bottom seat only, one per seat)

85.7Hip-to-knee room

Hip-to-knee room measured from the center of the seating position, from the front of one seat back horizontally across the highest part of the seat to vertical surface immediately in front, shall be a minimum of 26 in. At all seating positions in paired transverse seats immediately behind other seating positions, hip-to-knee room shall be no less than 27 in.

85.8Foot room

Foot room, measured at the floor forward from a point vertically below the front of the seat cushion, shall be no less than 14 in. Seats immediately behind the wheel housings and modesty panels may have foot room reduced.

85.9Aisles

The aisle between the seats shall be no less than 20 in. wide at seated passenger hip height. Seat backs shall be shaped to increase this dimension to no less than 24 in. at 32 in. above the floor (standing passenger hip height).

The bidder shall submit a copy of a proposed seat layout consistent with these specifications showing hip-to-knee and foot room dimensions, stanchion layout and wheelchair maneuverability layout prior to bid for procuring agency review and approval. The bidder shall also indicate on this layout the free floor space available to standees and include the calculation of the free floor space area.

85.10Dimensions

Seating dimensions and standard configuration Figure 1

Default

Seat dimensions for the various seating arrangements shall have the dimensions as follows (refer to Figure 1):

• 
  The width, W, of the two-passenger transverse seat shall be a minimum 35 in.
  
• 
  The length, L, shall be 17 in., ±1 in.
  
• 
  The seat back height, B, shall be a minimum of 15 in.
  
• 
  The seat height, H, shall be 17 in., ± 1 in. For the rear lounge (or settee) and longitudinal seats, and seats located above raised areas for storage of under-floor components, a cushion height of up to 18 in., ±2 in., will be allowed. This shall also be allowed for limited transverse seats, but only with the expressed approval of the procuring agency.
  
• 
  Foot room = F.
  
• 
  The seat cushion slope, S, shall be between 5 and 11 degrees.
  
• 
  The seat back slope, C, shall be between 8 and 17 degrees.
  
• 
  Hip to knee room = K.
  
• 
  The pitch, P, is shown as reference only.
  

Alternative

Agency to specify seat dimensions

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