MIL-B-62152 Bus, Motor: Ambulance, Intercity, 40 Passenger, 6X2 Or 6X4This specification covers a six-wheel, four- or two-rear wheel drive, diesel engine driven, intercity type motor bus ambulance, having a seating capacity for 40 adult passengers for long distance transportation. The bus has features to allow ready conversion to accommodate 18 litter patients, the driver, and four seated attendants. Except for customized ambulance conversion features, vehicles procured under this specification are commercial items. Frame and all chassis components, heating and air conditioning equipment shall be commercially available items. The vehicle shall be warranted as specified in the procurement documents.

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MIL-B-62152A(AT)

subjected to stress. Wood shall not be used for structural framing. Outside body panels and other

sheet metal shall be of aluminum alloy or stainless steel of not less than the gages, as applicable,

regularly furnished by the manufacturer in a bus of the model offered. The body, roof, and panel

joints shall be watertight and leakproof with leading panels overlapping the edge of trailing

panels. The pitch of fasteners (bolts, screws, and rivets) at all major interior and exterior sheet

metal panel edges shall not exceed 24 times the thickness of the thickest material used in the

joint. The strength of such edge joints shall be equal to not less than 60 percent of the tensile

strength of the thinnest member.

3.5.2.1 Steady state noise levels. The vehicle design shall limit noise level to the

minimum practicable level. The vehicle shall be tested as specified in section 4, Quality

Assurance provisions (see 4.3.4.1). Sound pressure levels shall not exceed the values specified in

table II.

TABLE II. Maximum noise levels (Preferred

Frequencies USAS S1.6-1967).

Octave band limits

Center frequency

Noise level

(Hz)

(dB)

44 -

87 - 175

125

175 - 350

250

350 - 700

500

700 - 1400

1000

1400 - 2800

2000

2800 - 5600

4000

5600 - 11200

8000

In addition, the overall sound level shall not exceed 83 dB(A)

3.5.3 Floor. The floor frame and floor plates, with entrance steps and whelhousings,

shall be of substantial construction and shall conform to Federal Motor Carrier Safety

Regulation 393.84. Wood flooring of not less than 1/2-inch, 5 ply marine grade or Douglas fir

improved select sheeting, exterior grade plywood shall be furnished. Wood parts shall be treated

as specified in 3.1.1.6. Steel or extruded aluminum channels, ranging in size from not less than

1-1/8 to 2 inches in depth and spaced to provide support for the loads imposed shall be furnished

under the floor. Floor shall be of single level rather than step design.