Report on the fabrication of a half-length A.P.T. prototype trailer-car roof section (to drawing no. OAPD P-0014 ISS 3) (IM-SD-057)

1. The object of the work was to investigate the feasibility of the proposed construction of the A.P.T. trailer-car roof and sidewall, i.e. using wide, full-length extrusions incorporating the outer skin and internal stiffeners, and to gather as much information as possible on the difficulties likely to occur with this...