Standard Bus Procurement Guidelines - APTAStandards.com
Standard Bus Procurement Guidelines - APTAStandards.com Standard Bus Procurement Guidelines - APTAStandards.com
Standard Bus Procurement Guidelines Ground Clearance. ground clearance shall be no less than 10 inches, except within the axle zone and wheel area. Axle Clearance. Axle zone clearance, which is the projected area between tires and wheels on the same axial centerline, shall be no less than {revise with data from mfrs} 5 ½ inches. Wheel Area Clearance. Wheel area clearance, shall be no less than 8 inches for parts fixed to the bus body and 6-1/2 inches for parts that move vertically with the axles. 5.1.5.1.3 Floor Height Height of the floor above the street shall be no more than 35 inches measured at the centerline of the front doorway and {revise with data from mfrs} 38 ½ inches measured at the centerline of the rear doorway. The floor may be inclined only along the longitudinal axis of the bus, and the incline shall be less than 1-1/2 degrees of the horizontal. All floor measurements shall be with the bus at the design height and on a level surface. Technical Specifications 126 10/18/07
Standard Bus Procurement Guidelines 5.1.5.1.4 Step Dimensions A maximum of three steps shall be required for passenger ingress and egress. The steps in each doorway shall be in a fixed location relative to the floor of the bus. At the front door, the first step up from street level shall not exceed 15 inches with the bus at the design height, and all step riser heights to bus floor level shall be the same height which shall be no more than 10 inches. At the rear door, the interior steps down from floor level shall not exceed 11-1/8 inches, and the final step to street level shall not exceed 16 inches with the bus at the design height. 5.1.5.1.5 Interior Headroom Headroom above the aisle and at the centerline of the aisle seats shall be no less than 78 inches. At the centerline of the window seats, headroom shall be no lower than the required top of the side window. Headroom at the back of the rear bench seat may be reduced to a minimum of 56 inches, but it shall increase to the normal ceiling height at the front of the seat cushion. In any area of the bus directly over the head of a seated passenger and positioned where a passenger entering or leaving the seat is prone to strike his/her head, padding shall be provided on the overhead paneling. 5.1.5.2 WEIGHT Baseline: Use for baseline configuration. Curb weight of the bus, as defined in Section 5.1.2 of these Specifications, shall not exceed 27,000 (Procuring Agency to insert weight considering specific configuration including bus width, seating style and configuration, and glazing material) pounds. Alternative: Use for alternative configurations as noted. Curb weight of the bus, as defined in Section 5.1.2 of these Specifications, shall not exceed (Procuring Agency to calculate per following notes) pounds. Note: Subtract 650 1000 pounds for 35 ft length. Subtract 100 500 pounds for 96 inch width. Subtract {mfr. data} pounds for polycarbonate or acrylic window glazing materials. Subtract {mfr. data} pounds for baseline or padded seating in perimeter configuration. Add {mfr. data} pounds for cushioned seating in perimeter configuration. Add {mfr. data} pounds for cushioned seating in baseline configuration. Technical Specifications 127 10/18/07
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<strong>Standard</strong> <strong>Bus</strong> <strong>Procurement</strong> <strong>Guidelines</strong><br />
Ground Clearance. ground clearance shall be no less than 10 inches, except within the axle zone<br />
and wheel area.<br />
Axle Clearance. Axle zone clearance, which is the projected area between tires and wheels on<br />
the same axial centerline, shall be no less than {revise with data from mfrs} 5 ½ inches.<br />
Wheel Area Clearance. Wheel area clearance, shall be no less than 8 inches for parts fixed to the<br />
bus body and 6-1/2 inches for parts that move vertically with the axles.<br />
5.1.5.1.3 Floor Height<br />
Height of the floor above the street shall be no more than 35 inches measured at the centerline of the<br />
front doorway and {revise with data from mfrs} 38 ½ inches measured at the centerline of the rear<br />
doorway. The floor may be inclined only along the longitudinal axis of the bus, and the incline shall be<br />
less than 1-1/2 degrees of the horizontal. All floor measurements shall be with the bus at the design<br />
height and on a level surface.<br />
Technical Specifications 126 10/18/07
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