least one-eighth inch (1/8") thick conforming to that specified in Undercoating, Section C-18.
Aisle Material: The floor covering in the aisles will be of aisle type elastomer, wear resistant and ribbed. Minimum overall thickness shall be .187 inch measured from tops of ribs. Must meet the maximum burn rate of the most current National School Transportation Specifications & Procedures.
Installation: All floor covering must be permanently bonded to floor and must not crack when subjected to sudden changes in temperature. Bonding or adhesive material shall be waterproof and shall be of a type recommended by the floor-covering material manufacturer. All seams must be sealed with waterproof sealer.
Trim: Seams shall be covered with extruded aluminum or stainless steel metal strips of a minimum three- sixteenths inches (3/16") high and one inch (1") wide that shall be installed on each side of the aisle, the full length of the aisle, so as to secure both the edges of the aisle covering and adjoining edges of the under seat covering. The strips shall be secured to the flooring with flush-mounted flat or low profile oval head screws; holes for the screws shall be countersunk. The screws shall be placed not more than nine inches (9") apart for the full length of the metal strips except that the ends of each piece of stripping shall have screws placed at not more than three fourths inches (3/4") from each end. Screws may be placed nine and one half inches (9-1/2") apart only to avoid interference with floor sill members.
Under Seat Material: The floor in the under-seat area, including tops of wheel-housings, driver's compartment and toe-board, shall be covered with an elastomer floor covering, having a minimum overall thickness of .125 inch. Must meet the maximum burn rate of the most current National School Transportation Specifications & Procedures. The driver's area in all Type A buses may be manufacturer's standard flooring and floor covering. Floor covering on toe-board shall be held in place by trim strip or molding.
FUEL TANK SERVICE ACCESS PORT:
An access port is required on all 35-90 passenger buses except front wheelchair lift equipped buses with a side-mounted fuel tank.
FUEL FILLER OPENING TYPE C and D buses
The body manufacturer shall provide an opening in the body panel to allow placement of the fuel nozzle into the fuel tank filler neck opening. This opening in the panel must be positioned so that the filler neck, when viewed at right angles from the side, is approximately centered in the cutout. If the fueling nozzle must pass through the skirting the opening shall be provided with a hinged cover designed and constructed so it will