Abstract: An object is to provide a column frame structure for a prefabricated house which enhances the efficiency of transportation, which maintains waterproof performance, and which achieve a satisfactory appearance in terms of appearance. A column frame 20 is foldably fitted onto a floor panel 40. A prefabricated house P in which a roof panel 10 is stacked on the column frame 20 is provided. When the prefabricated house is assembled, a gable end portion in the roof panel 10 is formed so as to be prevented from being protruded beyond the outside surface of the column frame 20. An eaves gutter 50 is installed so as to extend downward from the gable end portion in the roof panel 10. The eaves gutter 50 is formed so as to be prevented from being protruded outward beyond the outside surface of the column frame 20 on the gable.

Abstract: A pipe handler trailer assists with the handling of very large and heavy pipes that are regularly raised to and lowered from an elevated surfaces. At least one wedge is removably coupled to an intermediate location within the pipe handler boom. The wedge is operative to change a longitudinal direction of the non-linear boom. The wedge has a pipe-receiving trough configured to cooperate with the pipe handler skidway and support pipes through longitudinal movement thereon. Front and rear faces are rigidly affixed to an undersurface of the wedge skidway, and are offset from parallel to each other. A pair of support hooks protrude from the wedge front face, and are designed to drop into and engage with a pair of mating slots. Once the support hooks are engaged with the slots, fasteners such as bolts and nuts are used to secure the wedge to the pipe handler boom.

Abstract: A shelf anti-sagging support brace for attachment to a side edge of a shelf to prevent the shelf from sagging or drooping. The shelf anti-sagging support brace includes an elongate member with a pair of opposite ends, and front and back side faces extending between the ends of the elongate member. The back side face of the elongate member has a pair of elongate channels therein extending between the ends of the elongate member. Each of the elongate channels is designed for receiving a side edge of a shelf therein. The channels each have a spaced apart pair of side walls, an end wall connecting the side walls of the respective channel together, and a width defined between the side walls of the respective channel. The width of one of the channels is greater than the width of the other channel.