Abstract: A method for facilitating the assembly of a structural panel and for preventing the sag thereof comprises the step of placing the structural panel (2), comprising an outer plate (6) and an underlying skeleton framework (7), upon longitudinally extending support beams (B') which interconnect the upper ends of laterally spaced rows of longitudinally spaced support columns (C) which extend upwardly from a floor support surface (F). A mobile radiation heating element truck (4), movable upon laterally spaced rails (8) by means of casters (11), includes radiation heating elements (12).

Abstract: Apparatus for facilitating the assembly of a structural panel and for preventing the sag thereof comprises an upstanding support structure in the form of laterally spaced rows of longitudinally spaced columns (C) which extend upwardly from a floor support surface (F). Longitudinally extending support beams (B') interconnect the upper ends of the support columns (C), and the structural panel (2) comprising an outer plate (6) and an underlying skelton framework (7) is supported upon the support beams (B'). A radiation heating element truck (4), movable upon laterally spaced rails (8) by means of casters (11), include radiation heating elements (12) mounted upon a support panel (5) whereby the truck (4) is movable between first and second operative positions or stages (A, B).