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1-1/2" x 3/4" inboard, 3/4" x 1-1/4" x 3/4" center, and 3/4" x 1" x 3/4" outboard to form <br />a crowned roof facilitating water runoff and ice build-up. The roof shall then be <br />reinforced the entire length of the unit. For this reason, flat roofs shall be considered <br />unacceptable. There shall be in addition to the above supports, twelve (12) .125" x <br />2" x 2" cross members welded to the "Z" sections 12" on center and be made of a <br />highly corrosion resistant alloy with a tensile strength range of 31,000 to 35,000 psi. <br />Aluminum plates shall be welded between the roof support channels to mount <br />lighting fixtures, assist rails, hanging stretcher mounts, and IV holders. Corner <br />gussets shall be Heli arc welded to the roof radius extrusions to enhance roof load <br />bearing characteristics. Horizontal corner extrusions shall be .125" thickness and 2- <br />1/2" radius. There shall be an integral drip rail formed into the extrusion. The <br />horizontal extrusions shall use an interlocking method to secure the roof sheet into <br />the envelope of the extrusion. The horizontal extrusions shall be of an open-face <br />design for insertion of 2" x 2" x .125" tube structural members. Corner caps shall be <br />.125" cast aluminum and welded in place. <br /> Y___N___ <br /> <br /> <br />6.4 SIDES <br /> <br />The sides shall be constructed of .125" aluminum sheets with a highly corrosion <br />resistant alloy and a tensile strength range of 28,000 to 33,000 psi. The body shall <br />have straight sides free of waves and welding warpage. Doorjambs shall be formed <br />integral into the sidewall .125" aluminum sheets (extruded doorframes are not <br />acceptable). Each sidewall shall have twelve (12) vertical .125" x 2" x 2" wall studs <br />12" on center and joined to the roof supports. The box 2" x 2" channels shall be a <br />highly corrosion resistant alloy with a tensile strength range of 31,000 to 35,000 psi. <br />All box 2" x 2" roof and side support bows are .125" aluminum. Vertical corner <br />extrusions shall be .125" thickness and have a 2-1/2" radius. The radius ends shall <br />be tapered. The vertical extrusions shall be slotted for insertion of the sidewall <br />sheets. The vertical extrusions shall be of a web construction design for internal <br />structural support. The complete roof and sidewall structure shall be treated with a <br />sound-deadening barrier of BUNA Rubber. <br /> Y___N___ <br />A continuous 8" x 2" side impact beam shall be welded to side body and sidewall <br />extrusions to each side of the unit where the squad bench and CPR seats are <br />located. This side impact beam shall allow for secure and customizable mounting <br />points for the squad bench and CPR seat seatbelts. The side impact beam shall <br />also provide additional structure and rigidity in these seating locations in the event of <br />an accident. This side impact beam shall be constructed of minimum 8” x 2” x .250" <br />thick aluminum. Seat belt backer plates welded or adhered in between the extrusions <br />are unacceptable to this agency as this does not displace the energy of a side impact <br />as effectively as a continuous side impact rail. <br /> Y___N___ <br /> <br />6.4.1 DROP SKIRT <br /> <br />A 6" drop skirt shall be incorporated into the curbside, forward of the rear wheels of <br />the module body to provide additional protection, lower the side entry doorstep well <br />and an aesthetically pleasing appearance to the completed ambulance. <br /> Y___N___ <br /> <br />6.5 FLOOR <br /> <br />The body floor shall have a tubular frame structure with main members constructed